Filtering and washing device for KNO3

Abstract

The invention relates to the technical field of KNO3 production equipment and discloses a filtering and washing device for KNO3, which includes: a machine frame, a tipping bucket mechanism, a spiral conveyor and a suction filter pump, wherein the tipping bucket mechanism and the spiral conveyor are respectively mounted on the machine frame. A control main machine is arranged outside the machine frame. The material inlet on the upper part of the spiral conveyor is corresponding to the pouring side of a feeding hopper of the tipping bucket mechanism. A liquid filtering tube and a suction filtertank are disposed below the feeding hopper. The suction filter pump is installed on the bottom of the suction filter tank and is communicated with the suction filter tank. A vacuumizing pipe is arranged on the top of the suction filter tank. The control main machine is respectively connected electrically to the tipping bucket mechanism, the spiral conveyor and the suction filter pump. The device has reasonable and compact structure. By arranging the suction filter pump on the suction filter tank and the vacuumizing pipe connected with a vacuumizing system, liquid in the hopper can be exhaustedcompletely quickly. By arranging the tipping bucket mechanism and spiral conveyor, during working, auto-transport of materials is achieved in the device without manual operation, so that the device saves time and manpower and is high in efficiency.

Description

technical field [0001] The invention relates to the technical field of potassium nitrate production equipment, and relates to a filtering and washing device for potassium nitrate. Background technique [0002] At present, the production of high-purity potassium nitrate in China adopts two crystallization production processes (recrystallization process). Before the second crystallization, the crystal slurry of the first crystallization of potassium nitrate should be flowed or pumped into a box-shaped silo , use the filter plate in the box-shaped silo for natural filtration, and then rinse with mother liquor or clean water, and then drain the washed water naturally to minimize the content of impurities, and finally manually shovel out the washed crude nitric acid Potassium is allowed to enter the redissolving process for the second crystallization, so as to achieve the purpose of improving the purity of potassium nitrate, but this processing method has the following problems: ...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a filtering and washing device for potassium nitrate, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problem that the liquid in the box-shaped silo is naturally settled and discharged when filtering or flushing, and not only the operation process is time-consuming It is relatively long, and it is impossible to drain the residual liquid at the bottom of the box-shaped silo. It can also effectively solve the problem that the washed crude potassium nitrate needs to be manually shoveled out, which is time-consuming and labor-intensive.

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