Differential pressure anti-evacuation mortar pump

Abstract

The invention relates to a silica sand producing device, namely a differential pressure type evacuation preventing mortar pump. The differential pressure type evacuation preventing mortar pump comprises a mortar tank (2) and a mortar pump body (6), and the inlet of the mortar pump body (6) is located at the lower portion in the mortar tank (2). The differential pressure type evacuation preventing mortar pump is characterized in that a partition plate (3) is arranged in the mortar tank (2) and divides the space in the tank into a main cavity (4) and an auxiliary cavity (5), a notch (10) is formed in the upper portion of the partition plate (3), a water draining hole (8) is formed in the lower portion of the partition plate (3), a differential pressure valve (9) is installed on the part, on one side of the water draining hole (8) and the main cavity (4), of the partition plate (3), the differential pressure valve (9) is provided with a tubular sliding sleeve (11), an end cover (12) is arranged at the outer end of the sliding sleeve (11), a water draining port (14) is formed in the lower side wall of the sliding sleeve (11), a piston disk (15) is arranged in the sliding sleeve (11), and the inner side face of the piston disk (15) and a plate face around the water draining hole (8) are closed matched faces. The differential pressure type evacuation preventing mortar pump has the advantages that in the working process of the mortar pump, a part of mortar or clean water is stored in the auxiliary cavity, when the liquid face of the mortar in the main cavity ascends to the appointed position, the differential pressure valve is automatically opened, the mortar is supplemented in the main cavity, mortar pump evacuation is avoided, and the stable work of the mortar pump is ensured.

Description

technical field [0001] The invention relates to a silica sand production equipment, namely a differential pressure type anti-evacuation mortar pump. Background technique [0002] During the washing process of silica sand, it is often necessary to use a mortar pump to pump the slurry composed of silica sand and water to the next process. This kind of mortar pump is installed on the outer lower part of the mortar tank. The inlet of the mortar pump is placed in the lower part of the mortar tank. However, the supply of upstream pulp is very uncertain, sometimes more and sometimes less, and the operating capacity of the mortar pump must be calculated according to the upper limit. When the pulp is low or interrupted, the mortar pump will suck in air. When the amount of air is large and cannot be discharged in time , the slurry flow will be interrupted, and the mortar pump will run idly, causing pumping failure. If this failure cannot be detected and eliminated in time, the upstr...

AI Technical Summary

Problems solved by technology

However, the supply of upstream pulp is very uncertain, sometimes more and sometimes less, and the operating capacity of the mortar pump must be calculated according to the upper limit. When the pulp is low or interrupted, the mortar pump will suck in air. When the amount of air is large and cannot be discharged in time , the slurry flow will be interrupted, and the mortar pump will appear idling, causing pumping failure

If this failure cannot be detected and eliminated in time, the upstream slurry will overflow the mortar tank, and there will be no raw materials in the next process.

However, to eliminate the evacuation failure requires shutdown processing, or even stop the supply of ore pulp and even the operation of the whole line, which is very difficult to deal with and cause losses. Therefore, solving the evacuation failure has become a difficult problem in the operation of the mortar pump.

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