CN210152877U

CN210152877U - Device for petroleum drilling pump

Info

Publication number: CN210152877U
Application number: CN201920945511.9U
Authority: CN
Inventors: 李钧; 杨辉; 刘建梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-03-17
Anticipated expiration: 2029-06-22

Abstract

The utility model relates to an oil drilling pump is with device, including piston rod and piston head, the piston head cup joints the outside of fixing at the piston rod, the outer terminal surface integrated into one piece of piston head is equipped with two rows of lassos, the piston rubber is installed to the inboard joint of lasso, the outside middle part of piston head is located and is provided with the blotter between two rows of lassos, the utility model discloses be provided with two rows of piston rubber, increase piston head reciprocating motion's sealed effect, through the cooperation of clamp ring and screw, compress tightly the piston rubber and fix on the lasso, the piston rubber is installed easily, is dismantled, plays the support of rightting through bearing inner race, ball to the piston main part, has avoided causing wearing and tearing because of the piston eccentric wear to the piston rubber, has improved the life of piston.

Description

Device for petroleum drilling pump

Technical Field

The utility model relates to an oil drilling technical field, concretely relates to device for oil drilling pump.

Background

For the well pump widely used at present, such as the well pump of RL3NB series, the piston assembly of the well pump has been the traditional design in the past, and the piston rubber therein is a wearing part, and needs to be frequently disassembled and replaced in the field use, moreover, because of the defects of the design of the pressing ring and the snap spring, when the parts are replaced, a special tool is needed to be disassembled and assembled, and the field use generally has no special tool. And thus field maintenance is very difficult.

The piston is easy to be eccentric worn in the moving process, the piston rubber is a wearing part, the piston rubber is inevitably worn when the drilling pump is used, the guide frame is needed to be used for righting the piston, and eccentric wear of the piston rubber is reduced.

Based on this, the utility model designs an oil drilling pump is with device to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes at least a defect among the prior art, provides an oil drilling pump is with device.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

the utility model provides a device for oil drilling pump, includes piston rod and piston head, the piston head cup joints the outside of fixing at the piston rod, the outer terminal surface integrated into one piece of piston head is equipped with two rows of lassos, the piston rubber is installed to the inboard joint of lasso, the outside middle part of piston head is located and is provided with the blotter between two rows of lassos, the outside cover of blotter is equipped with the bearing outer lane, equipartition installation ball is gone up to the bearing outer lane, the ball passes through holder fixed mounting on the bearing outer lane.

Preferably, the cross-sectional width of the cushion pad is wider than the cross-sectional width of the bearing outer race.

Preferably, two sets of the piston rubber are oppositely arranged.

Preferably, the middle part of the outer end face of the bearing outer ring is provided with an arc-shaped groove for sliding the ball.

Preferably, the inner side wall of the piston rubber is compressed by a compression ring, a screw is installed on the outer side of the ferrule, and the end part of the screw is fixedly connected with the compression ring.

Preferably, the outermost end of the piston rubber is 2-4 mm higher than the outermost end of the ball.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses be provided with two rows of piston rubber, increase piston head reciprocating motion's sealed effect, through the cooperation of clamp ring and screw, compress tightly the piston rubber and fix on the cover circles, the piston rubber is installed easily, is dismantled, plays the support of rightting to the piston main part through bearing inner race, ball, has avoided causing wearing and tearing to the piston rubber because of the piston eccentric wear, has improved the life of piston rubber.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the bearing outer ring and the retainer of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-piston rod, 2-buffer pad, 3-piston head, 4-ferrule, 5-piston rubber, 6-screw, 7-bearing outer ring, 8-retainer, 9-ball and 10-clamp ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a device for oil drilling pump, includes piston rod 1 and piston head 3, piston head 3 cup joints and fixes the outside at piston rod 1, the outer terminal surface integrated into one piece of piston head 3 is equipped with two rows of lassos 4, piston rubber 5 is installed to the inboard joint of lasso 4, the outside middle part of piston head 3 is located and is provided with blotter 2 between two rows of lassos 4, the outside cover of blotter 2 is equipped with bearing inner race 7, equipartition installation ball 9 on the bearing inner race 7, ball 9 passes through 8 fixed mounting of holder on the bearing inner race 7.

Wherein, the section width of the buffer pad 2 is wider than that of the bearing outer ring 7; two groups of piston rubber sheets 5 are oppositely arranged; the middle part of the outer end surface of the bearing outer ring 7 is provided with an arc-shaped groove for the ball 9 to slide; the inner side wall of the piston rubber 5 is compressed through a compression ring 10, a screw 6 is installed on the outer side of the ferrule 4, and the end part of the screw 6 is fixedly connected with the compression ring 10; the outermost end of the piston rubber 5 is 2-4 mm higher than the outermost end of the ball 9.

One specific application of this embodiment is: piston rubber 5 compresses tightly through clamp ring 10, screw 6 is with 5 fixed mounting of piston rubber between clamp ring 10 and lasso 4, two rows of piston rubbers 5, increase piston head 3 reciprocating motion's sealed effect, ball 9 passes through 8 fixed mounting of holder on bearing inner race 7, ball 9 can carry out the support between the pipeline outer wall, blotter 2 cushions bearing inner race 7's motion, avoided causing wearing and tearing because of piston eccentric wear to piston rubber 5, the life of piston rubber 5 has been improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an oil drilling pump is with device, includes piston rod (1) and piston head (3), piston head (3) cup joint fixes the outside at piston rod (1), its characterized in that: outer terminal surface integrated into one piece of piston head (3) is equipped with two rows of lassos (4), piston rubber (5) are installed to the inboard joint of lasso (4), the outside middle part of piston head (3) is located and is provided with blotter (2) between two rows of lassos (4), the outside cover of blotter (2) is equipped with bearing inner race (7), equipartition installation ball (9) on bearing inner race (7), ball (9) are through holder (8) fixed mounting on bearing inner race (7).

2. The apparatus for an oil drilling pump according to claim 1, wherein: the section width of the buffer pad (2) is wider than that of the bearing outer ring (7).

3. The apparatus for an oil drilling pump according to claim 1, wherein: and the two groups of piston rubber sheets (5) are oppositely arranged.

4. The apparatus for an oil drilling pump according to claim 1, wherein: and the middle part of the outer end surface of the bearing outer ring (7) is provided with an arc-shaped groove for the sliding of the ball (9).

5. The apparatus for an oil drilling pump according to claim 1, wherein: the inner side wall of the piston rubber (5) is compressed through a compression ring (10), a screw (6) is installed on the outer side of the ferrule (4), and the end portion of the screw (6) is fixedly connected with the compression ring (10).

6. The apparatus for an oil drilling pump according to claim 1, wherein: the outermost end of the piston rubber (5) is 2-4 mm higher than the outermost end of the ball (9).