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Rotary Flash Dryer Four Process Design Methods
2018 / 05 / 13
The new equipment of the rotary flash dryer adopts a variety of advanced devices, such as the use of a variety of feeding devices, so that the feeding is continuous and stable, the filling process will not produce bridging phenomenon; the bottom of the dryer uses a special cooling device, to avoid the material in the bottom high temperature area Viscous wall and metamorphism occur; special pressure sealing device and bearing cooling device are used to effectively extend the service life of the transmission part; special air separation device is adopted to reduce the resistance of the equipment and effectively provide the processing air volume of the dryer; drying chamber With grading rings and swirling pieces, the fineness and final moisture of the material can be adjusted; the stirring, smashing device is used to produce strong shearing, blowing and rotating effects on the materials; using air filters, cyclone separators, bag filter, etc. Effectively remove dust and avoid environmental and material pollution. The device has strong mass transfer and heat transfer, high production intensity, short drying time and short material residence time. So today by the experienced Changzhou Fanqun drying equipment manufacturers to introduce to you the four rotary flash dryer design methods! First, the determination of the drying chamber Rotary flash dryer to deal with some of the material evaporation strength, volumetric heating method is a theoretical design method of rotary flash dryer, but in this method the most critical volume heating coefficient is difficult to determine, so the lack of Operational. Evaporation intensity method is an indirect method of volumetric heating method. It can be calculated as long as there is a certain amount of experimental data. It is a method commonly used in industrial design. The evaporation intensity method calculates the volume of the drying chamber based on the amount of evaporated water and the evaporation intensity
The importance of automatic unpacking machine in the powder industry
2018 / 05 / 13
Many people say that if you want to learn about a city, look at its public toilets. This sentence to our powder industry should be to understand a powder company to see its production workshop. In many powder companies in China, the environmental conditions at the production site are indeed very different. The main reason for this huge difference is the attitude of companies to dust pollution, which will inevitably have a great impact on the production of equipment. Packaging and unpacking are important aspects affecting production efficiency, dust pollution and workers' health. The relevant equipment is also moving from the optional stage to the standard. The ideal automatic unpacking machine can not only meet the requirements of high efficiency and environmental protection, but also have the advantages of less powder material, no pollution, and even space saving. Our company's automatic unpacking machine is used for bagging powder material dismantling bag to operate, equipment bags process without any dust leakage, effective protection for environment and operation space, workers working in better environment, physical and mental health of workers. Residues remaining in the material after bag breakage can not only avoid the recovery of waste and waste, but also recover the waste and discharge the impurities after the bag is broken. The device also has the advantages of low power consumption, low noise, light weight, low failure rate, etc. The performance has reached the import level of similar foreign equipment.
Characteristics of hazardous waste sludge treatment equipment
2018 / 05 / 13
The hazardous waste sludge treatment plant is a low-speed, agitated plant with a special fan-shaped hollow blade that provides continuous indirect heating for dry/cooled paste, powder and granular materials. The machine greatly improves the heat transfer efficiency through partial stirring, mixing and self-cleaning, and ensures the stable quality of the dried material. In addition, the machine also has the advantages of low exhaust emissions and complete exhaust gas removal. It is an efficient, low-energy, compact chemical plant. Equipment maintenance is easier.
About Dilute phase pneumatic conveying system details
2018 / 05 / 08
Dilute phase pneumatic conveying system is a pressure-feed type dilute phase conveying equipment, suitable for conveying materials under medium pressure conditions (15KPa-150KPa). It consists of five major components: a rare-phase delivery device, an air lock device, a check valve, a mixing chamber, and an ejector. The pneumatic dilute phase conveying system integrates two conveying methods (mechanical conveying and pneumatic conveying) and is suitable for conveying materials that are difficult to convey by ordinary pneumatic conveying equipment. The pneumatic dilute phase conveying system greatly improves the performance of the airlock conveying function. Delivery efficiency, reducing operating pressure
Detailed description of positive pressure dense phase pneumatic conveying system
2018 / 05 / 01
The positive pressure dense phase pneumatic conveying system has the features of simple system, flexible layout, reliable operation, high degree of automation, low system investment, high feed gas ratio, low flow rate, small maintenance workload and low annual operating cost. The system includes feeding device, sending warehouse pump, pipelines, valves, reservoir top dedusting device, bottom gasification device, bottom unloading device, power source, program control device and so on. The warehouse pump has strong structure, good sealing performance, large conveying capacity, long conveying distance, and can meet the requirements of production. The structure is simple. Except for compressed air, there are no transmission parts that come in contact with the materials, so the failure is small and the operation reliability is good....
Steam analyzer reduces drying costs
2018 / 03 / 23
The cost of the dryer used in the industry may be very large, but if you use a vapor analyzer, you can help reduce the cost of heating, although the small size, but the role is very large, it is worth our installation in the drying, but also have Learn more clearly before you can. KJG Hollow Blade Dryer manufacturers introduce a lot of drying in the work process, must use chemical solvents for the production of the product, the end result is that it is often used as a method of evaporating the solvent, in an online application description of it, moving And heating a lot of air can be expensive. In general, one method of cost control is to reduce ventilation, and only drying at this point is to ensure the expected production speed. However, careful control of the instrument can be dangerous, resulting in inadequate ventilation of flammable vapors, causing fire or explosion. LEL is the lower explosion limit, which is the low concentration of solvent vapor in the air. If given a source of ignition, it will continue to burn. By providing a method that can estimate or calculate ventilation requirements, it is possible to achieve a low-cost method of LEL. In most cases, it is estimated that the use of three airs per gallon of solvent evaporation is required. KJG Hollow Blade Dryer Manufacturers Introduction Adding analyzers is often overlooked because they seem unlikely, say control instruments. For example, when a hot oxidizer reaches its large rated air volume, it can prevent the new process line from going out without a significant investment. Instead of adding another oxidizer to the new equipment, manufacturers can reduce the exhaust gas recirculation from the existing production line. With the solvent vapor analyzer, the cost will be quickly recovered.
Water source heat pump and solar combined sludge drying system
2018 / 03 / 23
With the development of society and the increase of urban population, the construction speed of sewage treatment facilities in China has greatly increased in recent years, and sludge production has also rapidly increased. Since sludge contains a large number of toxic and harmful substances (such as parasite eggs, pathogenic microorganisms, bacteria, heavy metals, etc.) and useful substances (such as plant nutrients, organic matter, water, etc.), it is necessary to treat and dispose of sludge in a timely manner so that Sludge reduction, stabilization, harmlessness and utilization. A water source heat pump and solar combined sludge drying system are provided. The sludge dryer is realized by the following method. The water source heat pump is the main heat source of the sludge drying system, and the solar heat source is auxiliary. The system makes full use of the sewage source heat pump to recover the secondary biological wastewater treatment plant as the main source of energy for drying the heat energy water sludge, utilizes the solar energy as a supplemental energy source, improves the efficiency, and at the same time overcomes the lean and intermittent process of solar energy itself that is odorless and wasteless. Continuous operation, zero emission clean production. The system includes: collector system, adiabatic dehumidification system, automatic control system and sludge dewatering system, among which the collector system includes: water source heat pump and solar collector, collector inlet device of fan and sewage system sludge dewatering system and sludge dewatering System connection, including: drying chamber, heating and dehumidification system, sludge feeding device, tipping device and receiving device, feeding device, feeding drying sludge dehydration chamber entrance, heating and dehumidification system, feeding device, feeding device device and regulator The heating capacity of the receiving device is relatively high, and the desiccant drying sludge dryi
Vibrating fluidized bed operating principle
2018 / 03 / 08
1.1 type and structure Fluidized bed dryers generally have two major categories: One type is horizontal rectangular and vertical circular motors driven directly on a fluidized bed, characterized by a simple fluidized bed structure, easy installation, and low cost; The other type is the plate spring type in which the vibrator is separated from the motor and fixed at one end of the fluidized bed. The vibration and transmission mechanism is complex and the cost is high. It is generally used in large-scale fluidized-bed dryers, and the operation is stable. Fluidized state. The current horizontal selection of the rubber industry horizontal rectangular vibration fluidized bed dryer. Horizontal rectangular vibration fluidized bed dryer structure shown in Figure 1. It consists of the housing, distribution plate, vibrator (including vibration motor and vibration isolation spring) and hot air and cold air system. The vibrator generally includes two counter-rotating eccentric motors, which are called self-synchronizing two-axis inertial linear vibrators. Hot air enters through the perforated distribution plate from the bottom up, and the material enters from above the back. The material is fluidized in the fluidized bed by hot air and vibration. At the same time, heat and mass exchange occurs. The dried material is cooled and transported by vibration. To the discharge port, cold, hot air from the upper part of the exhaust outlet. 1.2 Features Ordinary fluidized bed in the dry particulate material, the following problems may occur: When the smaller particle size to form a ditch flow or die bed, the particle distribution of a large range of entrapment will be quite serious; due to the anti-mixing of particles, the material in the machine retention Different times, the particles after drying have uneven water content; When the humidity of the material is large, agglomeration and agglomeration may occur to det
Vacuum rake dryer precautions and features
2018 / 03 / 06
Vacuum rake dryer Note: Vacuum rake dryer is a conduction-based heat transfer dryer, the heat comes mainly from the jacket with the inner wall of the heat conduction. Material does not directly contact with the heating medium, suitable for drying a small amount of heat-sensitive and oxygen-sensitive sludge, paste material, moisture content range of 15% to 90%. Dryers horizontal rake stirrer blades made of cast iron or steel, mounted on a square or circular shaft, half of the leaves to the left and the other half to the right. The rotational speed of the shaft is 7~8r/min, which is driven by the motor with decelerator. At the same time the use of automatic steering device, so that the spindle rotation every 5 ~ 8min to change a mixer direction of rotation. The advantages of the vacuum rake dryer in drying the material: 1. The feed granules or powder can be delivered to the container by vacuum conveying or manually. 2, with the container is constantly rotating, the material in the container for complex impact movement, to achieve uniform mixing. 3, energy saving, easy operation, low labor intensity, high work efficiency. 4, automatic temperature control, you can adjust to 20. 5, Compared with other dryer, its thermal efficiency will be doubled. 6, indirect heating, so that raw materials from pollution. 7, vacuum rake dryer features: easy washing and maintenance.
2018 / 01 / 12
Flash dryer In the past, our country can not yet achieve self-production dryer, the drying equipment required for the production of various industries have to spend expensive to purchase from abroad. At present, China's dryer industry has formed a very large industrial scale, in addition to meet the needs of the domestic market, the dryer produced in China also go abroad and exported to overseas. At present, the dryer industry in our country is mainly distributed in the eastern region. This is because the eastern region is the first open region in our country. The economy is prosperous and the industrial technology is relatively advanced. In recent years, with the rise of our national economy and the continuous development of the central and western regions, the dryer industry in our country has also shown the trend of spreading to the central region. As we all know, dryer is an indispensable drying equipment in modern industrial production. China's dryer industry in the recent nearly 30 years of development, has made remarkable achievements. Eighties of last century, China's production of less than one hundred thousand species of dryer. After entering the new century, China has produced 500,000 kinds of dryer. Flash dryer has the advantages of high thermal efficiency, short drying time and good energy-saving effect. Due to the fast drying speed and short heating time of the material, it is not easy to damage the components of the dried material. In particular, the drying of the paste material can be directly dried to make the powdery dry product, thereby saving the processes of pretreatment, drying, smashing and screening; Is conducive to the drying of heat-sensitive materials; drying process is completely clos
What are the advantages of Horizontal ribbon mixer?
2018 / 01 / 09
Now manufacturers use horizontal ribbon mixer in the structure after improvement, the equipment is mainly U-shaped structure, this structure can speed up the work, another device in the selection of components has also been a lot of adjustments, This horizontal ribbon mixing equipment in the operation of the process is very stable and reliable, the device also added a double leaf structure, so that the material into the interior of the device can be stable operation, the material can also be more focused on both sides of the device Together, and within a certain time to complete the task of mixing materials, such mixed material greater contact area, during which chemical and physical reactions can be completed. The use of horizontal ribbon mixer can be mixed with viscous materials processing equipment, processing a wide range of powder materials and liquid materials can also be mixed operation, the equipment in the structural advantages of the processing flow of the There are also many conveniences available, and the equipment uses a full-open door design that makes it easier to clean materials during the job through the horizontal ribbon mixing equipment. During the material
2017 / 10 / 23
Our company specializes in the design of sludge drying machine for the industry: printing and dyeing, paper making, biology, electroplating, thermoelectric, chemical and sewage treatment plants. General sludge dehydration after the initial moisture at 80%, after drying the final water is 10% -50%, the general requirements of about 30% of sludge, dry sludge into loose powder can be mixed with coal powder directly into the boiler after burning Mud heat value of about 1500-2000kcal or so, can use waste and save energy, and some sludge can be made after drying fertilizer and building materials, or direct landfill will not cause secondary pollution, turning waste into treasure, Can be achieved environmental requirements, this equipment, low energy consumption, heat can use steam, heat oil, flue gas heating (evaporation 1kg water consumption of 1.1-1.3kg steam) with low power consumption, smooth operation, low noise, Small and other advantages, the basic automatic production. The current environmental awareness of enterprises growing, sludge is troubled by the development of enterprises in general problems, the company introduced advanced foreign sludge drying technology, combined with the actual situation of the domestic production of sludge drying machine, fully able to meet the requirements of industry customers, By more and more enterprises of the trust and cooperation, and domestic and how much big, medium and small enterprises have had cooperation, our company will use superb technology to better serve you, work together to create a green earth. WG series of sludge special dryer is my company's new boutique, and domestic similar products even better, in order to ensure the
Vacuum freeze dryer exports to Spain
2017 / 10 / 18
Low-carbon economy and energy-saving emission reduction is China's long-term implementation of the strategic objectives. As a drying equipment manufacturing enterprises in addition to their own production process to reduce the consumption of resources and environmental pollution, but also should assume the low consumption of environmentally friendly products and advanced production and processing technology to improve the efficiency of equipment manufacturing. Vacuum freeze-drying technology used in research and development production GZLS series of vacuum freeze dryer, in addition to domestic sales, has also been accepted by foreign users qualified, sold to Spain, South Korea and other countries and regions. Vacuum freeze-drying is a more advanced method of dehydration of substances at present. The technology is to freeze the aqueous material at low temperature, and then let the water in the vacuum state directly sublimation, and condensate method of sublimation of sublimation of water vapor, to material The purpose of dehydration drying. The freeze-dried material, its physical, chemical and biological state is basically the same, the volatile components of the material and heat denaturation of the nutritional loss is very small, freeze-dried material was porous, and its volume is basically the same as before drying. So after the water due to contact area, can quickly recover, in the sealed container has a longer shelf life. The company's vacuum freeze dryer has been certified by the European Union CE, its dry box, condenser, evaporator, vacuum pipe and other components, made of stainless steel material, in line with drugs, food GMP specification requirements; vacuum system using two-stage vacuum Vacuum is in a better state to shorten the entire freeze-drying time; refrigerators with single or double-stage cooling, to achieve the ideal cooling temperature, maintenance, easy to operate; electrical control with a variety of advanced measurement s
2017 / 10 / 16
Most of the equipment in the long-term use must be cleaned, this is to avoid failure, to avoid the main conditions of various problems. Without exception, the vacuum drying machine for material drying should be cleaned after a long period of operation to ensure the cleanliness of the work and the quality of the material. So, for this a vacuum dryer, how can we clean in the end, it is more advantages of some? In fact, as long as attention to the following two aspects can be. First, pay attention to the case of dust particles. Since they are a drying device for a material, the material remains in the machine after each operation. If we are able to clean them, they need to remove the dust and material remnants, so that the dryer can be blocked, or the quality of the material is dry. So, want to clean the vacuum dryer, the corresponding dust particles should pay attention. Second, pay attention to the situation of parts. When cleaning the vacuum dryer, pay attention to the parts, the situation of various types of devices. If the parts are intact, without any problems, simply wipe them simply, or remove dust. But if there is rust, or more serious pollution, it is necessary to clean down the demolition, so as to ensure that the dryer used again the high efficiency. In this way, if you have the use of vacuum dryers, when they are cleaned, we must pay attention to the situation of dust particles, but also pay attention to the parts and equipment under the situation. As long as these aspects pay attention to good, clean even more advantages, the dryer protection, maintenance and service life will be extended.
Resin dedicated pressure spray dryer
2017 / 10 / 13
Resin usually refers to the softening or melting range after heat, softening in the external force under the action of the flow tendency, at room temperature is solid, semi-solid, and sometimes can be liquid organic polymer. Broadly speaking, any polymer that can be processed as a raw material for plastic products is called a resin. Resin is the main raw material for the manufacture of plastic, but also used to make paint (the main coating material of the coating, such as: alkyd resin, acrylic resin, synthetic fatty acid resin, the resin in the Yangtze River Delta and the Pearl River Delta, Exuberant areas such as Changxing Chemical, New Peis resin, three surplus resin, DSM first resin, etc.), adhesives, insulating materials, synthetic resin in industrial production, is widely used in liquid impurities separation and purification , With macroporous adsorption resin, ion exchange resin, and some special resin. Resin dedicated pressure spray dryer works: The working process of the unit for the material through the diaphragm pump high pressure input, sprayed droplets, and then with the hot air co-current decline, most of the powder from the bottom of the discharge port collection, exhaust and its fine powder by cyclone separation , The exhaust gas from the exhaust fan, the powder is located in the cyclone separator at the bottom of the pollination tube collection, fan outlet can also be equipped with secondary dust removal device, the recovery rate of 96-98% or more.
The difference between Chinese medicine extract spray dryer and the spray dryer
2017 / 10 / 11
The spray dryer is a drying process in which the raw material is dispersed into a droplet by means of an atomizer and in direct contact with the droplets by hot air (or other gas). Air through the filter and heating, into the top of the dryer hot air distributor, hot air was evenly into the drying chamber, the material from the top of the tower at the top of the high-speed centrifugal atomizer, rotating spray into a very fine mist beads, fog Drip and hot air contact, mixing and flow at the same time heat transfer and mass transfer, in a very short period of time can be dried for the finished product, droplets and hot air flow to the flow, countercurrent and mixed flow, contact different, The temperature distribution, the trajectory of the fog (or particles), the residence time of the particles in the drying tower, and the nature of the product. Chinese medicine extract spray dryer with fully enclosed form, all components are made of stainless steel, with a three-level purification device, filtered air up to 100,000 requirements. The cylinder and the top are equipped with a cold wall device, so that the wall temperature <80 ℃, drying tower is equipped with gas brush tower device. Chinese medicine extract spray dryer tower with a cold jacket. The tower body is equipped with automatic rapping device. The tower body, the pipeline is equipped with quick opening cleaning hole and sewage hole. Can be equipped with automatic control of constant temperature feeding tank. Materials that are in contact with the material are made of stainless steel. (Or all stainless steel) materia
2017 / 10 / 09
In recent years, with the people on the carrot health care awareness of the deepening of science and technology and the rapid development of China has carried out a large number of new carrots research and development work. Now the most common on the market to be carrot juice, but in the carrot juice processing will produce a lot of residue, not only a waste of resources, but also cause environmental pollution, while the " Carrots can be processed into carrots powder can solve this problem; carrots milling not only the size of the raw materials, the shape does not have strict requirements, will not produce residues caused by environmental pollution, and can make full use of raw materials in the dietary fiber and nutrients to achieve raw materials The full effect of use, is a real CU technology. So carrots powder in line with today's food industry's "efficient, high-quality, environmentally friendly" development direction. After the processing of carrots into powder, greatly broaden the scope of use of raw materials, can be added as ingredients to pasta products, baked goods, dairy drinks and other food products. , It can be seen, the development prospects of carrots powder will be very bright. And our company for the carrot of the milling process, in the nothing inedutesional platingomonybuction machine double drum scraper dryer based on the special research and development of carrots powder dedicated drying equipment. The most suitable equipment for the drying of carrots powder is frozen and dry, but our company designed and manufactured carrots powder dedicated dryer relative to the freeze dryer There are several major advantages: the same premise, the drum scraper dry cost of investment is relatively smal
2017 / 04 / 22
Ethiopia customers ordered precipitated silica and aluminum silicate filter cake dryer successfully shipped XSG-8 flash dryer Our company manufactures and supplies a superior quality range of Spin Flash Dryers, which are widely used to efficient as well as effective methods of surface removal. These products are ideal to dry continuously the cohesive as well as non-cohesive pastes, liquids of high viscosity and filter cakes. Our products are featured with double shaft screw and are available at client friendly prices in the domestic market.
The characteristics and scope of the flash dryer
2017 / 04 / 05
The flash dryer has the advantages of high thermal efficiency, short drying time and good energy saving effect. The paste-like material can be directly dried to form a powdery dry product, saving the pre-treatment before drying, drying and crushing, screening and other processes; due to drying speed, material heating time is short, easy to destroy the dry material components, Is conducive to the drying of heat-sensitive materials; drying process is completely closed, no impurities mixed into the finished product of high quality, good operating environment. At present, the flash dryer has been based on different materials designed a variety of models, and the formation of a series of products, chemical, pharmaceutical, light industry, food, minerals and other industries more and more widely. Typical dry materials are: Inorganic: borax, calcium carbonate, hydroxide, copper sulfate, iron oxide, barium carbonate, antimony trioxide, various heavy metal salts, synthetic cryolite, manganese carbonate, magnesium carbonate, sodium sulfite, dibasic calcium phosphate, Iron red, aluminum hydroxide, sodium acetate, white carbon black, bentonite and so on. Organic acids: lauric acid, benzoic acid, benzoic acid, sodium oxalate, cellulose acetate, melamine, tin triphenyltin acetate, methyl cellulose, bromine, DSD acid, 2,4-D acid, H acid, J Acid and so on. Pesticides: atrazine (pesticide pesticides), Bataan, insecticides alone, mancozeb, mite net, methomyl, quinoxaline, tricyclazole, benzethonium, paclobutrazol, Tojin, atrazine, imidacloprid and so on. Pigment Dyes: phthalocyanine dyes, indigo dyes, chrome orange, yellow tan, tartrazine, fast black G, titanium dioxide, lithopone, yellow and so on. Hard salt series: calcium stearate (magnesium, aluminum, zinc, barium, chrome), di-salt aluminum pho
Laboratory spray dryer features
2017 / 03 / 30
1 Features: 1.1 spray drying tower drying speed. After centrifugal spray, the surface area is greatly increased. In the high temperature air stream, 95% -98% moisture can be evaporated instantaneously, and the drying time is only a few seconds. 1.2 The use of co-current spray-dry form can make the droplets and hot air flow in the same direction, although the hot air temperature is high, but the hot air into the drying room immediately with the spray droplets contact, the indoor temperature drop, and the material wet bulb temperature basic It is also suitable for heat-sensitive materials to dry. 1.3 spray drying tower use a wide range. According to the characteristics of materials, can be used for hot air drying, centrifugal granulation and cold granulation, most of the characteristics of large differences in the product can use this machine production. 1.4 As the drying process is completed in an instant, the finished product particles are essentially able to keep the droplets in a similar spherical shape, and the product has good dispersibility, fluidity and solubility. 1.5 production process is simplified, easy to operate and control. Spray drying is usually used for solutions with a solids content of less than 60%. After drying, no further crushing and screening is required to reduce the production process and simplify the production process. For the product size, bulk density, moisture, within a certain range, can change the operating conditions to adjust, control, management is very convenient. 1.6 in order to make the material from pollution and extend the life of equipment, where the material with the contact part, are made of stainless steel. The material is sprayed and atomized into particles, and the surface area is greatly increased. After drying with hot air, the drying process can be completed in a very short time. Under normal circumstances in the 100 ~ 150 ℃, 1 ~ 3 s can be evaporated 95% to
Ruide dry pulverized coal, coal particle drying machine out of the country, selling overseas
2016 / 09 / 13
Ruide special flash dryer drying pulverized coal particle fluidized bed dryer, special export to South Africa, customers get the praise!
Advantages of Spray Dryer--Ruide Drying
2015 / 10 / 22
Spray drying, the choice dehydration method for the food and pharmaceutical industries, employs an atomizer and a stream of hot gas to produce dry powders, granules or agglomerates from a liquid or slurry. The atomizer disperses liquid feed into fine droplets from which the liquid evaporates, leaving behind solids. Products dried using this process include powdered milk, cake mix, instant coffee, detergent, dyestuff, ceramic powder and yeast extract. Spray drying's one-step ability to complete the drying process within seconds gives it an edge over other industrial drying techniques. In the food industry, fast drying plays a vital role in ensuring minimum overall flavor loss. The process operates on basic principles and lends itself to automation. The process is versatile and adaptable to a wide range of industries and their feedstock and product specifications. Virtually any feedstock that can be pumped -- solutions, suspensions, slurries, melts, pastes, gels -- can likewise be spray dried. Spray drying produces powders of controllable particle size and overall quality. Other characteristics manipulated during spray drying include bulk density, degree of crystallinity and residual solvent levels. Being able to control these parameters makes the process desirable for industries like pharmaceuticals, where the optimum absorption of a drug depends greatly on particle size. In dyestuff production, powders of uniform consistency ensure their convenient dispersion into paint suspensions. The food industry puts a premium on moisture content, which determines a product's shelf life.
Types of grinding machine--Ruide Drying
2015 / 10 / 22
1.Belt grinder, which is usually used as a machining method to process metals and other materials, with the aid of coated abrasives. Sanding is the machining of wood; grinding is the common name for machining metals. Belt grinding is a versatile process suitable for all kind of applications like finishing, deburring, and stock removal. 2.Bench grinder, which usually has two wheels of different grain sizes for roughing and finishing operations and is secured to a workbench or floor stand. Its uses include shaping tool bits or various tools that need to be made or repaired. Bench grinders are manually operated. 3.Cylindrical grinder, which includes both the types that use centers and the centerless types. A cylindrical grinder may have multiple grinding wheels. The workpiece is rotated and fed past the wheel(s) to form a cylinder. It is used to make precision rods, tubes, bearing races, bushings, and many other parts. 4.Surface grinder which includes the wash grinder. A surface grinder has a "head" which is lowered to a workpiece which is moved back and forth under the grinding wheel on a table that typically has a controllable permanent magnet for use with magnetic stock but can have a vacuum chuck or other fixturing means. Surface grinders can be manually operated or have CNC controls. 5.Tool and cutter grinder and the D-bit grinder. These usually can perform the minor function of the drill bit grinder, or other specialist toolroom grinding operations. 6.Jig grinder, which as the name implies, has a variety of uses when finishing jigs, dies, and fixtures. Its primary function is in the realm of grinding holes and pins. It can also be used for complex surface grinding to finish work started on a mill. 7.Gear grinder, which is usually employed as the final machining process when manufacturing a high-precision gear. The primary function of these machines is to remove the remaining few thousandths of an
What is grinding machine?--Ruide Drying
2015 / 10 / 22
A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation. Grinding is used to finish workpieces that must show high surface quality (e.g., low surface roughness) and high accuracy of shape and dimension. As the accuracy in dimensions in grinding is on the order of 0.000025 mm, in most applications it tends to be a finishing operation and removes comparatively little metal, about 0.25 to 0.50 mm depth. However, there are some roughing applications in which grinding removes high volumes of metal quite rapidly. Thus, grinding is a diverse field. The grinding machine consists of a bed with a fixture to guide and hold the work piece, and a power-driven grinding wheel spinning at the required speed. The speed is determined by the wheel`s diameter and manufacturer`s rating. The grinding head can travel across a fixed work piece, or the work piece can be moved while the grind head stays in a fixed position. Fine control of the grinding head or table position is possible using a vernier calibrated hand wheel, or using the features of numerical controls. Grinding machines remove material from the work piece by abrasion, which can generate substantial amounts of heat. To cool the work piece so that it does not overheat and go outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the machinist as the heat generated may cause burns. In high-precision grinding machines (most cylindrical and surface grinders), the final grinding stages are usually set up so that they remove about 200 nm (less than 1/10000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible. Artic
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Email:sale@jsdryer.net
Address:Industrial Park Xinbei District, Changzhou City, Jiangsu Province, China, Changzhou, Jiangsu
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