Axial plunger pump with double rows of cylinder holes and cylinder bodies

Abstract

The invention relates to an axial plunger pump, and in particular relates to an axial plunger pump with double rows of cylinder holes and cylinder bodies. The plunger pump comprises a driving main shaft, a cylinder body, a fluid distributor, a plunger, a swinging tray and an upper cover, wherein the cylinder bodies are provided with a plurality of cylinder holes; the fluid distributor is provided with two semi-circle fluid distribution holes; the plunger pump is characterized in that the plurality of cylinder holes in the cylinder bodies are divided into two rows; the numbers of the two rows of cylinder holes are equal, and are alternatively distributed on two circumferences with the same radius centering on the axis of the driving main shaft; the bottom part of each cylinder hole is provided with waist-shaped through holes which are communicated with the fluid distribution holes on the fluid distributor; and the waist-shaped through holes are all distributed on the circumferences with the same radius centering on the axis of the driving main shaft. Through the application of the cylinder bodies of the two rows plunger holes, the fluid pulsation can be reduced effectively, the stability of the pump operation can be improved, so that the aim of vibration and noise reduction is achieved; by adopting the cylinder bodies of the two rows of plunger holes, under the condition of increasing discharging amount without changing the integral structure of the pump, the integral structure is more compact; and the increase of the flow rate also enables the working range of the pump to be increased greatly.

Description

technical field [0001] The invention relates to an axial plunger pump, in particular to an axial plunger pump with a double-row cylinder bore cylinder body, which can increase the flow rate and reduce the pulsation coefficient. Background technique [0002] The structure of the existing direct shaft plunger pump is as follows: figure 1 , 2 As shown, it mainly includes a drive spindle 1, a cylinder body 2, a flow plate 3, a plunger 4, a swing plate 5, an upper cover 6, a swing plate angle adjustment device 7 and a sliding shoe 8, wherein the cylinder body 2 is provided with a row of The cylinder bores 9 (such as image 3 , Figure 4 As shown), the bottom of the cylinder bore is provided with a waist-shaped through hole 10 communicating with the valve plate. The plunger 4 is slidably disposed in the cylinder hole 9 and is slidably disposed on the swing plate 5 through a sliding shoe 8, and the swing plate 5 forms an inclination angle with the rotation axis of the cylinder...

AI Technical Summary

Problems solved by technology

[0004] 1. Increase the diameter of the cylinder bore. The increase in the diameter of the cylinder bore will inevitably lead to the enlargement of the cylinder block and even the entire pump body.

[0005] 2. Increase the stroke of the plunger. The stroke of the plunger depends on the inclination angle of the wobble plate. However, the increase of the inclination angle of the wobble plate will lead to an increase in the radial component force between the action of the wobble plate and the contact end of the plunger, and a decrease in the axial component force. The result is : The output pressure is reduced, and the wear of the sliding shoe and the swing plate, as well as the plunger and the cylinder hole is aggravated

[0006] 3. Increase the number of cylinder holes, the increase in the number of cylinder holes will lead to the enlargement of the cylinder body and even the whole pump body

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