The characteristics of the vacuum rake dryer
Vacuum rake dryer has the characteristics of the five aspects:
(1) strong adaptability, widely used Because the vacuum rake dryer using jacketed heat, high vacuum exhaust, so almost of all state of different nature, different materials are used to, especially for explosive, easy oxidation, paste material drying.
(2) the products are of good quality Due to the drying process, the tine is positive and negative rotation, material mix is dry, avoid overheating in the material, moisture and easy to escape, shell be products of low temperature. Because the product particle size, do not need to crush can packaging.
(3) the steam consumption is small Due to vacuum rake dryer multi-purpose steam into the jacket, use of latent heating materials, processing the finished product cost per kilogram steam is small, generally 1.3 1.8 ㎏ steam.
(4) according to the different characteristics and requirements of dry material, drying machine sealing system can choose two kinds of packing seal and mechanical seal, special design to ensure the tightness and service life.
(5) easy to operate the vacuum rake dryer is easy to operate, less capacity, low labor intensity. Due to the material to escape and loss, improve the environmental health.
Vacuum rake dryer is the main drawback of: complicated structure, the cost is more expensive. Because it is intermittent operation, the drying time is long, lower productivity; And due to not easy off material, so not suitable to produce often exchange varieties. At the same time, in order to guarantee the vacuum degree, must often maintenance vacuum device.
7, vacuum rake dryer production forms and the equipment superiority
Vacuum rake dryer is in the domestic traditional vacuum rake dryer technology based on all kinds of paste, paste, granular, powder, fibrous material such as strengthening, improvement and design, transmission part use stable, durable cylindrical gear reducer, with bold solid shaft drive shaft, and fully guarantee the vacuum rake dryer in stable operation of various kinds of bad working environment. The heating medium optional steam, thermal oil, hot water. Material stainless steel and Q235 plank.
Vacuum rake dryer, especially suitable for drying heat-sensitive materials oxidation at high temperature materials, or dry materials easy to harden, and drying the matter from which the vapor escaped and must be recycled materials. After the dry material for powder, so for the finished product was suitable for powder material, packaging, after drying can be directly without crushing. Medicine, food, chemical industries to dry the following materials: applicable to paste, paste, powder material. For low temperature drying heat-sensitive materials. Easy oxidation, explosive, strong stimulation, toxic materials. Materials for recycling organic solvent. Be dry material paste, paste, granular, powder or fibrous, and in the production process of solid alcohol sodium (potassium), has been widely used.
The operation of the vacuum rake dryer than the low Labour intensity, box-type dryer can recycle the useful material moisture, good operating condition, management more convenient. Vacuum rake dryer defect is low production capacity, equipment structure is more complex, mixer blade is easy to damage, etc. Vacuum rake dryer used in dye and pharmaceutical industry. Drying VAT dye intermediates, anthraquinone, for example, sulfonic acid, reducing olive R, salicylic acid intermediates, card will polymers, 2 amino anthraquinone or other materials dry.
Vacuum rake dryer is slightly more negative pressure or vacuum form, the moisture in the drying process can vaporize at low temperature, can realize low temperature drying, for some drugs, food, and agricultural and sideline products in the drying of thermal sensitive material is good. Liquid sugar more than 70 ℃, for example, some components will become brown, reduce the commodity value of the products; Some catalyst than use temperature will change its chemical properties; Protein denaturation at high temperatures, changed the material of nutrition ingredient and so on. In the low temperature drying, the heat energy utilization is reasonable. Thus reducing the production cost, improve the product quality, reduce the labor intensity of workers, protecting the environment. So since developed vacuum rake dryer, has been in the pharmaceutical industry, chemical industry, dye, pesticide, food, and other fields have a large number of industrial applications. Vacuum rake dryer mainly consists of cylinder, stirring shaft, transmission system and sealing device and other parts. Dry calories is mainly provided by the stirring shaft and the cylinder jacket. When the heating medium access equipment, heat through the jacket and the stirring shaft to indirect heating of the material, moisture in wet material heated evaporation, evaporation of moisture is away just in time by vacuum system. With the continuous rotation of stirring shaft, material contact with the heating surface constantly updated, make the material evenly heat, so as to achieve good drying effect.
Be dry material from joining shell above middle, in the positive and negative rotation of tine of mixing, material axial is moved back and forth, contact with the inner wall of the shell surface is updated continuously, at the same time is indirectly heated by steam; In tine of great pieces under the action of uniform mixing and crushing, the material surface is constantly updated and increase makes water more favorable; Gasification of water, tail gas by dry or wet dust catcher and the condenser after the removal of dust and potentially non-condensable gas, to achieve discharge standard of non-condensable gas pump vent.
Vacuum rake dryer toughened bulletproof double glass door, to observe the object in the working chamber at a glance, to vacuum rake dryer internal inert gas. Dry storage, heating, test and are in no oxygen or an environment filled with inert gases, so no oxidation. Can adjust tightness of the door is closed, the overall molding silicon rubber door seal ring, to ensure that the vacuum rake type dry high vacuum inside the case. Vacuum rake dryer short heating time, compared with the traditional drying machine vacuum rake dryer heating time reduced by more than fifty percent. Vacuum rake dryer cuboid chamber, as to achieve the maximum of effective volume, microcomputer temperature controller, control precise and reliable. Studios use mirror (drawing) made of stainless steel plate, ensure durability.