CN218235679U

CN218235679U - Piston oil duct device of hydraulic power high-pressure pump

Info

Publication number: CN218235679U
Application number: CN202222160595.XU
Authority: CN
Inventors: 王利明; 郑德忠; 郑海亮
Original assignee: Zhangjiakou Dezhong Drilling Machinery Co ltd
Current assignee: Zhangjiakou Dezhong Drilling Machinery Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-01-06
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to a piston body oil duct device of a hydraulic power high-pressure pump, which comprises an oil passing groove, an oil passing hole and an oil passing channel; the diameter of the oil passing groove is larger than that of the oil passing hole; the oil passing groove is directly communicated with the oil passing channel and is used for enabling hydraulic oil in a hydraulic cavity of the hydraulic power high-pressure pump to enter the oil passing groove through the oil passing hole and the oil passing channel; the oil passing channel is an oil passing channel of the type of & lt. The utility model discloses an increase the oil groove diameter, pass through the oil groove with the oil duct direct succession, need not further cancellation fabrication hole plug of reprocessing fabrication hole, reduced the fault rate.

Description

Piston oil duct device of hydraulic power high-pressure pump

Technical Field

The utility model belongs to the technical field of hydraulic power high-pressure pump, concretely relates to hydraulic power high-pressure pump piston body oil duct device.

Background

The hydraulic power high-pressure pump is a highly integrated automatic reciprocating pump, limited space is required to be utilized to achieve the maximization of the flow area of a hydraulic flow passage, the working hydraulic flow passage is enlarged, and the power loss of the flow passage is reduced.

As shown in fig. 1, 4 process holes 13 need to be made on a piston body 11 of the existing high-pressure pump, 4 process hole plug threads 12 are further provided, effective threads are few due to space factors of the piston body 11 of the high-pressure pump, the pump is a continuous and rapid reversing process from high pressure to low pressure during working, and the process plug threads are easy to fall off due to extremely high impact force.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic power high-pressure pump piston body oil duct device, through increaseing the oil groove diameter, the oil duct directly links in succession through the oil groove, need not further cancellation fabrication hole plug of reprocessing fabrication hole, reduces the fault rate.

The utility model provides a piston body oil duct device of a hydraulic power high-pressure pump, which comprises an oil passing groove, an oil passing hole and an oil passing channel; the diameter of the oil passing groove is larger than that of the oil passing hole; the oil passing groove is directly communicated with the oil passing channel and is used for enabling hydraulic oil in a hydraulic cavity of the hydraulic power high-pressure pump to enter the oil passing groove through the oil passing hole and the oil passing channel; the oil passing channel is an oil passing channel of the type of & lt.

Compared with the prior art, the beneficial effects of the utility model are that:

the diameter of the oil passing groove is increased, the oil passage is directly connected with the oil groove, the process hole plug is further eliminated without reprocessing the process hole, and the failure rate is reduced.

Drawings

FIG. 1 is a schematic view of a piston body of a conventional hydraulic power high pressure pump;

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is a schematic view of a piston body of the hydraulic power high-pressure pump according to the present invention;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 5 is a schematic view of the hydraulically powered high pressure pump control directional control valve of the present invention in a closed position;

FIG. 6 is a schematic view of the hydraulically powered high pressure pump control directional control valve of the present invention in an open state;

fig. 7 is a schematic diagram of the start of a second cycle of the hydraulically powered high pressure pump control directional control valve of the present invention.

Reference numbers in the figures:

in fig. 1 and 2: 11-a high pressure pump piston body; 12-plugging threads by using a fabrication hole; 13-fabrication holes; 14-oil passing holes; 15-oil passing groove;

in fig. 3 to 7:

1-a piston body; 2 a first plunger; 3-an oil passing groove; 4-a first oil passing channel; 5-controlling a reversing valve; 6-a second oil passing channel; 7-a second plunger; 8-a first hydraulic chamber; 9-a second hydraulic chamber; 10-oil passing holes; 20-an oil inlet; 30-oil return port.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

Referring to fig. 3 and 4, the present embodiment provides an oil passage device of a piston body of a hydraulic power high-pressure pump, which includes an oil passing groove 3, an oil passing hole 10 and an oil passing passage; the diameter of the oil passing groove 3 is larger than that of the oil passing hole 10; the oil passing groove 3 is directly communicated with the oil passing channel and is used for enabling hydraulic oil in the hydraulic cavity of the hydraulic power high-pressure pump to enter the oil passing groove through the oil passing hole 10 and the oil passing channel; the oil passing channel is an oil passing channel of the type of & lt.

Referring to fig. 5, when the hydraulic power high-pressure pump works, the control reversing valve 5 is at an initial position (which is called as a closed state), hydraulic oil enters the first hydraulic cavity through the oil inlet, the piston body 1 is pushed to drive the first plunger 2 and the second plunger 7 to move rightwards, the piston body 1 is pushed to move rightwards, hydraulic oil in the second hydraulic cavity 9 passes through 8 holes with the diameter of 8 millimeters at the right end (oil passing holes 10) and the first angle-type oil passing channel 4, further passes through the oil groove 3, further passes through an annular channel of the control reversing valve 5, further passes through 8 holes with the diameter of 8 millimeters at the left end of the piston body, further passes through the second angle-type oil passing channel 6, and further returns to the oil tank through the oil outlet.

Referring to fig. 6, when the piston body 1 moves to a set position to the right, hydraulic oil in the first hydraulic chamber 8 enters the control reversing valve 5, the reversing valve 5 is controlled to automatically move to a position (called as an open state) shown in fig. 6 by the left end of the control reversing valve 5 under the action of the area difference (d 1 > d 2), the hydraulic oil enters the first hydraulic chamber 8 through the oil inlet, further enters the second hydraulic chamber through the control reversing valve 5 annulus and further enters the second hydraulic chamber through 8 holes (oil passing holes 10) with the diameter of 8 mm at the right end of the piston body and the first oil passing channel 4, and the hydraulic oil pushes the piston body 1 at the moment to drive the first plunger 2 and the second plunger 7 to move to the left. When the piston body 1 moves to the position shown in the figure 7, hydraulic oil at the left end of the control reversing valve 5 is communicated with the oil outlet, the pressure at the left end of the control reversing valve 5 is zero, the control reversing valve 5 moves leftwards under the action of the area difference (d 3 > d 2), the piston body is in a closed state at the position shown in the figure 5, and the operation is circulated and automatically reciprocated.

When the piston body moves to the left as shown in fig. 7, the control direction valve 5 is in the initial position (which we refer to as the closed state) again, i.e. at the beginning of another cycle, and so on.

The utility model discloses an increase the oil groove diameter, pass through the oil groove with the oil duct direct succession, need not further cancellation fabrication hole plug of reprocessing fabrication hole, reduced the fault rate. And two ends of the piston body are provided with an oil passing channel of an angle type.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A piston body oil duct device of a hydraulic power high-pressure pump is characterized by comprising an oil passing groove, an oil passing hole and an oil passing channel; the diameter of the oil passing groove is larger than that of the oil passing hole; the oil passing groove is directly communicated with the oil passing channel and is used for enabling hydraulic oil in a hydraulic cavity of the hydraulic power high-pressure pump to enter the oil passing groove through the oil passing hole and the oil passing channel; the oil passing channel is an oil passing channel of the type of & lt.