Deflection volumetric high-pressure water pump

Abstract

The invention discloses a deflection volumetric high-pressure water pump. The deflection volumetric high-pressure water pump comprises a pump body and a rotor installed in the pump body through an eccentric shaft. The pump body is provided with a water inlet and a water outlet. The edge of the rotor is tangential to the inner wall of a working cavity of the pump body. The parts, located on the two sides of the rotor, of the eccentric shaft are provided with side plates symmetrically. A sliding key sliding groove is formed in the upper end of the inner wall of the working cavity of the pump body, and arc-shaped grooves are symmetrically formed in the sliding key sliding groove. Arched rotation blocks are arranged in the arc-shaped grooves correspondingly. A positioning sliding key is inserted between the two rotation blocks. The lower end of the positioning sliding key is in a shaft shape and is inserted into a positioning hole formed in the upper end of the rotor through clearance fit. The working cavity is divided into a high-pressure zone and a low-pressure zone through the positioning sliding key and the rotor. An oil filling hole is formed in the pump body in the radial direction. An oil filling channel is formed in the positioning sliding key. The deflection volumetric high-pressure water pump has the beneficial effects that the volume of the working cavity of the pump body can be fully used, the efficiency of the water pump can be effectively improved, machining, oil filling and lubricating are facilitated, the lubricating effect is good, the mechanical abrasion is small, and the service life is long.

Description

technical field [0001] The invention relates to a water pump structure, in particular to a yaw displacement high-pressure water pump. Background technique [0002] As we all know, the positive displacement rotor pump is composed of a stationary pump body and a moving rotor. The side of the rotor in the pump body in contact with the liquid directly acts on the liquid in the form of static pressure, and discharges it by the extrusion of the rotor when it deflects. The liquid, while leaving space on the other side, creates a low pressure that allows the liquid to be sucked in continuously. [0003] The Chinese utility model patent with the publication number CN202203109U discloses a double-shaft sealed variable-capacity water pump, which includes a pump body and a suspended pendulum rotor arranged in the working chamber of the pump body. The sealing partition is provided with guide sealing holes on the inner wall of the working chamber and the pendulum rotor corresponding to t...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the zigzag shape of the dual-axis head-guided sealing partition, its lateral width is large, resulting in a large space occupied in the working chamber, thereby reducing the efficiency of the water pump

[0005] 2. Due to the irregular shape of the double-shaft head guide seal partition, the two shaft heads are respectively arranged in the inner wall of the working chamber and the guide seal hole on the pendulum rotor, and the positions are staggered horizontally, so it is not easy to process and lubricate, and is easy to wear After wear and tear, the high-pressure and low-pressure chambers separated by the double-shaft head-guided sealing partition are easy to communicate, resulting in a decrease in pump efficiency and pressure, and a short service life.

[0006] 3. On the compensation plate, there are only a plurality of stepped holes evenly distributed in the circumferential direction, which does not have the function of one-way interception and back pressure, and it is easy to make the gap between the compensation plate and the rotor driven by the high-pressure water flow generated in the pump body during operation. Creates a clearance that reduces the pressure and head of the variable displacement water pump

[0007] 4. Since there is no pressure relief structure on the compensation plate, the high-pressure water flow generated in the pump body is easy to leak through the gap between the compensation plate and the central shaft during operation, thereby further reducing the pressure and head of the variable displacement water pump

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