Long-distance pulverized coal conveying equipment

Abstract

The invention discloses long-distance pulverized coal conveying equipment, which comprises a screw conveying pump, a pulverized coal conveying pipe connected with the front end of the screw conveying pump and an air pipe connected with the rear end of the screw conveying pump. The key technique of the equipment is that an auxiliary air pipe, of which one end is communicated with the air pipe through a ball valve or a stop valve and the other end is communicated with the pulverized coal conveying pipe through an arranged elbow, is arranged between the pulverized coal conveying pipe and the air pipe. The equipment requires small investment and floor area, operates smoothly and can convey a large amount of pulverized coal and realize long-distance pulverized coal conveying.

Description

technical field [0001] The invention relates to a device for conveying pulverized coal, which is used for long-distance transportation of pulverized coal in industries such as lime, pellets and cement. Background technique [0002] At present, warehouse-type conveying pumps are generally used when long-distance coal powder transportation is required in industries such as lime, pellets, and cement. The warehouse-type conveying pumps require a relatively large investment, occupy a large area, and are relatively complicated to operate and maintain. Therefore, the use of screw conveying pumps can be considered, but the use of screw conveying pumps is prone to the following problems: [0003] 1. The control part of the feeding amount of the existing screw conveying pump is a screw gate valve, which is adjusted by the opening of the screw gate valve, and the sealing performance of the screw gate valve is poor. Due to the influence of the humidity of the pulverized coal and the po...

AI Technical Summary

Problems solved by technology

[0003] 1. The control part of the feeding amount of the existing screw conveying pump is a screw gate valve, which is adjusted by the opening of the screw gate valve, and the sealing performance of the screw gate valve is poor

Due to the influence of the humidity of the pulverized coal and the position of the pulverized coal, the feeding amount is extremely unstable

Moreover, due to the long-distance coal delivery, the loss of pipeline pressure difference is large, and the required wind pressure is high. The sealing effect of the screw gate valve is very poor, causing serious on-site pollution

[0004] 2. The motor has a large load and trips frequently

When transporting pulverized coal over a long distance, press air pressure at 6kg / cm 2 According to calculations, the pressure of the air pressure on the sealing cover can reach more than 1,500 kg, which greatly increases the load on the motor, causing the motor to trip frequently, and the amount of pulverized coal delivered per hour is less than 3 tons, which is far from reaching the design capacity.

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