Sealing structure with throttle orifice plate instead of valve

Abstract

The invention relates to a sealing structure with a throttle orifice plate instead of a valve. The sealing structure with the throttle orifice plate replacing the valve is installed in a double suction pump, and comprises a sealing flushing part, wherein the sealing flushing part comprises a sealing flushing pipeline and a sealing flushing pipeline fitting matched with the sealing flushing pipeline, the sealing flushing pipeline is led out from two ends of a pump cover, and the two led-out ends are connected to a mechanical seal gland flushing hole or a reserved packing flushing hole of the pump cover. Compared with a traditional sealing flushing structure, the sealing structure with the throttle orifice plate instead of the valve provided by the invention overcomes the defects that: a flushing pipeline of a traditional single-stage double-suction horizontal split-case centrifugal pump is of a structure with ball valves, the positions of the ball valves are distributed at two sides of the top of the pump cover, the positions are high, the field operation difficulty is large, the water quantity is difficult to quantitatively adjust, the mechanical seal flushing performance is influenced, and in addition, the universality of a mechanical seal pump cover and a packing pump cover is not considered at the initial stage of design, the mold opening and material management cost is increased, and the product universality is reduced.

Description

technical field [0001] The invention relates to a sealing structure, in particular to a throttle orifice that is easy to install, reduces the difficulty of on-site operation, can avoid the operation of adjusting the amount of flushing water on site in the later stage, improves product versatility, and reduces cost in multiple directions. structure. Background technique [0002] The flushing pipeline of the existing single-stage double-suction horizontal split centrifugal pump has a structure with ball valves. The position of the ball valves is distributed on both sides of the top of the pump cover. Flushing performance; In addition, the versatility of the mechanical seal and packing pump cover was not considered at the early stage of design, which increased the cost of mold opening and material management, and reduced the versatility of the product. Contents of the invention [0003] In view of the above problems, the main purpose of the present invention is to provide a ...

AI Technical Summary

Problems solved by technology

[0002] The flushing pipeline of the existing single-stage double-suction horizontal split centrifugal pump has a structure with ball valves. The position of the ball valves is distributed on both sides of the top of the pump cover. Flushing performance; In addition, the generality of the mechanical seal and packing pump cover was not considered at the initial design stage, which increased the cost of mold opening and material management, and reduced the product's versatility

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