Cooling device for screw granulator

Abstract

The invention discloses a cooling device for a screw granulator. The cooling device comprises a water tank, a cooling water jacket, a water inlet pipe and a drainage pipe. The two ends of the cooling water jacket are each provided with a connecting piece. The cooling water jacket comprises an outer sleeve and an inner core cylinder. An annular interlayer is formed among the outer sleeve, the inner core cylinder and the two connecting pieces. A partition plate is arranged inside the annular interlayer in the axial direction. A first baffle plate, a second baffle plate... and an Nth baffle plate are arranged inside the annular interlayer in the circumferential direction. The first baffle plate and the Nth baffle plate are located on the two sides of the partition plate. A water inlet and a water outlet are formed in the outer sleeve. The water inlet is formed between the first baffle plate and the partition plate. The water outlet is formed between the Nth baffle plate and the partition plate. One end of the water inlet pipe is communicated with an outlet of the water tank, the other end of the water inlet pipe is communicated with the water inlet, a self-sucking pump is installed on the water inlet pipe, one end of the drainage pipe is communicated with the water outlet, and the other end of the drainage pipe is communicated with an inlet of the water tank. The cooling device is simple in structure, convenient to install and capable of effectively absorbing heat generated by friction between materials and an extrusion cylinder.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a cooling device for a screw granulator. Background technique [0002] my country uses a large amount of chemical fertilizers, but ordinary chemical fertilizers release nutrients quickly, a large amount of nutrients are easily lost, the utilization rate is not high, and it will cause damage to the environment. In addition, the amount of agricultural and forestry waste is large, and the main treatment methods are burning or random stacking. A lot of resources were wasted. Biochar can be obtained by heating and cracking biomass such as agricultural and forestry wastes under low-oxygen or even anaerobic conditions, which can be mixed with chemical fertilizers. The number and quantity of chemical fertilizers used and the degree of pollution to the environment are low. [0003] At present, the commonly used granulation methods include agglomeration granulation, pressure ...

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Problems solved by technology

For example, in the document "Ren Yilin, Wei Chunhui, Yuan Xiaochen, etc. Design and experiment of columnar biochar-based fertilizer forming machine [J]. Journal of Shenyang Agricultural University, 2017, 48(3): 311-319." Biochar-based fertilizer molding machine, the molding machine has the following problems: there is friction between the material and the extrusion barrel and screw, the extrusion barrel and screw will generate a lot of heat, the machine cannot work continuously, and the production efficiency is low

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