Sodium Hydrosulfide Na2s2o3 Rotary Drum Flaker for Cooling and Crystallization Process

Basic description of the equipment of the drum type condensing and crystallizing flaker Discription:

Drum type condensation crystallization flake is a kind of continuous conduction cooling and drying equipment. On the outer wall of the drum, the material obtains the temperature difference transmitted by water (steam, heat transfer oil) cooling (heat transfer), and then cools (dries) the lamination.

In the cooling process, the cooling water (steam, heat transfer oil) is evenly sprayed to the inner wall of the drum by the distribution system, and the temperature of cold water (steam, heat transfer oil) is transferred from the inner wall of the drum to the outer wall of the drum, and then passes through the material film to achieve the purpose of cooling (drying) crystallization.

The utility model has the advantages of simple structure, high efficiency and continuous operation, so it is widely used for liquid materials or strip materials. The liquid material completes the whole process of cloth film, scraping and getting products in one rotation cycle of the drum.

Therefore, in the operation, the expected product and corresponding output can be obtained by adjusting the feed concentration, film thickness, cooling (heating) medium temperature, drum revolution and other parameters. Due to the structure and operation of the equipment, it is more suitable for paste and viscous materials.

Condensing (dry bath) rotary drum laminating machine, the whole equipment is completely closed, double sides are reserved with access doors, sealing strips are closed, the top of the cover is equipped with air conditioning multi pipe air inlet, improving the cooling efficiency and increasing the capacity. The material is placed in the storage tank, and the film is formed by sticking the animal material on the surface of the drum through the rotating belt of the drum.

During the rotation of the drum, the material is cooled (dried) and crystallized into flake powder. Then, it is scraped off by the discharging scraper blade, and the material is collected by the spiral conveying, or directly bagged by the discharging hopper. Feeding method adopts the method of down dip or up distribution: down dip is to send the slurry to the dip tank under the barrel, and the drum is immersed in the feed tank.

During the rotation process, the material automatically adheres to the barrel surface, and the thickness of the material is adjusted by controlling the immersion depth and the barrel rotation speed. The equipment structure is simple and the main engine power is low.

According to the physical properties of materials, it can also be set as upper feeding and back feeding. Upper cloth is a special fabric structure designed for some materials with low cohesion. Complete the condensation (drying) crystallization of different materials.

Performance and characteristics of the product: 1. There are 3 kinds of feeding methods: up-feeding, back-feeding and down-feeding. For the characteristics of chemical materials, there are single drum type and double drum type. 2. There are steam heat preservation, heat-conducting oil circulation heat preservation and electric heating heat preservation in the material tank. 3. The equipment is divided into open type and semi-closed type, fully closed type, vacuum type, nitrogen protection type. 4. Blade materials are brass, phosphor bronze, nylon, rubber wood, alloy steel saw blade. 5. Discharge system has single out, double out and so on. 6. Special requirements: the regular shape and size of the material to ensure that the material piece thickness and size uniformity. 7. Cooling or (heating) system has a sub-jacketed or spray type, according to the size of the drum flaker machine specifications and the characteristics of the material to be designed to improve the efficiency of heat transfer and increase the strength of the drum and to improve the relative yield of the product. 8. The cooling water adopts packing seal or rotary joint, which can reliably prevent water leakage and apply new process to reduce the consumption of cooling water. 9. Both ends of the drum are equipped with heat insulation layer and side scraper, no material is formed at both ends of the drum, thus there is no friction power consumption at both ends of the drum, eliminating the problem of unstable start-up due to material formation at the end. 1.Inlet 2.Drive section 3.Drum 4.Cooling system 5.Outlet system 6.Scraper system 7.Frame 8.Feed tank

Working Principle

The hot material is applied to the cooling drum by direct immersion into a trough, or indirect immersion using doctor/applicator rolls. The molten liquid is cooled on the cooling drum and after a partial revolution; the cooled and solidified product is removed by a scraper in the form of flakes or film. The cooling drum of the flaker is specially designed to provide an even cooling effect by having uniform and effective internal distribution. As a result, both high output and homogeneity of the product are possible.