KJG-220 hollow paddle dryer is made in high standard and loaded and sent to customer units!

Product introduction of KJG-220 hollow paddle dryer:

     Hollow paddle dryer is a kind of horizontal mixing type continuous drying equipment which mainly relies on heat conduction. Because the heat required for drying relies on indirect heating by heat conduction, the drying process does not need or only needs a small amount of gas to take away the moisture. It greatly reduces the part of heat loss taken away by gas flow, improves the heat utilisation rate, and is a kind of energy-saving drying equipment. Paddle dryer is widely used in petrochemical, chemical, metallurgy, food, medicine, pesticide and other industries for drying powdery, granular, filter cake, slurry materials.

KJG-220 hollow paddle dryer working principle:

    Hollow paddle dryer heat transfer surface has several parts such as blade, stirring shaft, wall, and the heat transfer area of the blade accounts for a large part, so the equipment has a compact structure and large heat transfer area per unit volume. In addition, stirring and mixing make the material flip violently, so as to obtain a high heat transfer coefficient, so the floor space and space are very small, saving the cost of plant infrastructure. Drying process gas dosage is less, the flow rate is low, the amount of dust taken away by the gas is less, so it is convenient to recover the gas dust after drying, and the volume of the recovery equipment is small, so it can save the investment in equipment. For the drying process which needs to recover solvent, the concentration of solvent can be greatly improved. Due to the special structure of paddle, the material receives squeezing and relaxation alternately in the drying process, which strengthens the drying. The filling rate of the material inside the drying chamber is very high, which can reach 80%-90%, and the residence time of the material can be adjusted by adjusting the charging speed, stirring shaft rotation speed, the filling degree of the material and other parameters, which can be adjusted arbitrarily from a few minutes to a few hours. In addition, the material in the dryer from the feeding port to the discharge port movement is basically a piston movement, residence time distribution is narrow, so the product moisture content is uniform. The paddle has a certain axial angle on the mixing shaft, so the material can be dried continuously.

KJG-220 hollow paddle dryer equipment structure:

     Take the double shaft type as an example to introduce its structure (hollow paddle dryer can be divided into single, double and four) . It consists of a W-type shell with jacketed end face, upper cover, two hollow shafts with blades, end caps at both ends, rotary joints with media, metal hoses, and transmission mechanism including gears, sprockets and other components.

  The core of the equipment is two hollow shafts and hollow stirring paddles welded on the shafts. The shape of the paddles is a wedge-shaped hollow semicircle, which can be passed into the heating medium. In addition to the role of stirring, but also the equipment of the heat transfer body. The two main heat transfer sides of the paddle become slanted, so when the material is in contact with the slanted side, with the rotation of the blade, the particles quickly slide away from the slanted side.

  Therefore, when the material contacts with the slanting surface, with the rotation of the blade, the particles quickly slide away from the slanting surface, so that the heat transfer surface is constantly updated, which strengthens the heat transfer. At the bottom of the triangle of the paddle is provided with a scraper to scrape up the material deposited on the bottom of the shell to prevent dead space.

  The row layout of the paddle and the size of each part have certain requirements, and in the feeding area, drying area, discharge area in addition to the paddle, another auxiliary institutions to ensure stable operation of the machine, drying uniformity. In addition, the residence time can be adjusted.

The main features of KJG-220 hollow paddle dryer:

      1、Compact structure, large effective heat transfer area, small footprint. 

      2、Uniform mixing, high thermal efficiency, good drying effect.

      3、Paddle shafts can engage with each other, with self-cleaning effect, can prevent the material from sticking to the wall.

      4、Low energy consumption, small operating costs

      5、Small dust entrainment, less material loss.

      6, indirect heating, no contaminated material

      7、Low rotating speed of paddle shaft, without destroying the shape and nature of the product.

      8、Equipment operation flexibility, smooth and reliable operation.