A self-crushing plunger type sewage pump

Abstract

The invention belongs to the field of volumetric hydraulic pumps, and specifically discloses a self-crushing plunger type sewage pump, which includes a casing, a crankshaft, three sets of movable components, a cutting component, a lower pipeline and an upper pipeline, wherein the crankshaft is installed on Inside the casing; the movable components include connecting rods, plungers, and cylinder liners. Among them, the connecting rod is installed on the crankshaft; the plunger is installed in the cylinder liner, and the cylinder liner is installed at the plunger hole reserved in the casing. On the connecting rod, the other end is provided with an inlet valve and an outlet valve; the cutting assembly includes a cutting device and a pulley, and the pulley is installed at one end of the crankshaft. The pulley is used to drive the cutting device to rotate to cut the dirt in the sewage; The lower pipeline is sequentially connected to the cutting device and three inlet valves, and the upper pipeline is sequentially connected to three outlet valves. The invention meets the sewage discharge requirements of the submersible, and discharges sewage after diving to a certain depth, and has the characteristics of light structure, strong sewage discharge performance and reliable operation.

Description

technical field [0001] The invention belongs to the field of displacement hydraulic pumps, and more specifically relates to a self-crushing plunger type sewage pump. Background technique [0002] With the continuous advancement of science and technology, the exploration and development of marine resources has gradually increased in recent years. As an important tool for marine exploration and development, submersibles have an inseparable relationship with the development of marine science. The sewage system is an indispensable and important part of the submersible. The most common sewage system in the deep-sea submersible is controlled by multiple valves, and the sewage stored in the sewage tank is blown out by high-pressure air. This system needs to be operated The actual operation of multiple valves is relatively complicated, and at the same time, the noise generated when the sewage is blown out is very large. This kind of sewage system does not meet the performance requir...

AI Technical Summary

Problems solved by technology

The sewage system is an indispensable and important part of the submersible. The most common sewage system in the deep sea submersible is controlled by multiple valves, and the sewage stored in the sewage tank is blown out by high-pressure air. This system needs to be operated With multiple valves, the actual operation is more complicated, and at the same time, the noise generated when the sewage is blown out is very large. This kind of sewage system does not meet the current performance requirements for low-noise submersibles.

[0003] In addition to the sewage system blown out by high pressure, many fields currently use centrifugal pumps for sewage, but due to the limitation of the impeller structure of the centrifugal pump, its anti-winding ability is average, and it has not been improved in many researches. The weak anti-winding ability of the pump to a certain extent leads to poor reliability of the pump in the face of complex media environments.

Compared with the centrifugal pump, the plunger pump has a good seal between the liquid end and the power end during the working process, and the problem of entanglement is not easy to occur. However, the plunger pump has not been used in the field of sewage discharge at present. Compared with the plunger pump, especially The design of the flow channel and the inlet and outlet valves needs to be improved to a certain extent, and due to the structural characteristics of the plunger pump, some large-scale dirt is easy to accumulate inside, so it is necessary to improve the plunger pump to adapt to the submerged pump. blowdown demand

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