CN220337428U

CN220337428U - Sealing device for speed reducer of pumping unit

Info

Publication number: CN220337428U
Application number: CN202322045280.5U
Authority: CN
Inventors: 常申向; 孙平; 贾建平; 房建国
Original assignee: Yan'an Ruixin Petroleum Engineering Technology Service Co ltd
Current assignee: Yan'an Ruixin Petroleum Engineering Technology Service Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-01-12
Anticipated expiration: 2033-08-01

Abstract

The utility model discloses a sealing device of a speed reducer of an oil pumping machine, which relates to the field of sealing devices and comprises two sealing seats arranged on the speed reducer, wherein the sealing seats are semi-annular, sealing barrels are arranged on the two sealing seats, the two sealing barrels are covered on a shaft rod of the speed reducer, a plurality of springs are arranged on the inner wall of the sealing barrels, a movable plate is fixedly connected on the other ends of the springs, and a semi-annular sealing plate is arranged on one side of the movable plate away from the springs. According to the utility model, the spring is arranged, and can continuously push the movable plate and the sealing plate, so that the sealing plate continuously contacts with the shaft rod, and lubricating oil in the speed reducer is prevented from seeping out through the shaft rod due to abrasion of the sealing plate, thereby achieving the purpose of sealing.

Description

Sealing device for speed reducer of pumping unit

Technical Field

The utility model relates to the field of sealing devices, in particular to a pumping unit speed reducer sealing device.

Background

The most equipment that oil exploitation field used at present is the beam-pumping unit, and the lubricating oil that the reduction gear in the beam-pumping unit needs always leaks from the output axle head, and serious pollution environment, when the leakage quantity is big, can cause the reduction gear to lack oil, gear wearing and tearing are accelerated, influence life. In the past, the sealing is replaced or the sealing device is installed, and the connecting rod, the crank and the balancing weight of a few tons of pumping unit are required to be completely disassembled, so that the replacement can be realized, the labor and the time are wasted, and the production is seriously influenced.

The traditional Chinese patent with the publication number of CN216519514U discloses a split type sealing device for an output shaft of a pumping unit, when the speed reducer operates, the output shaft of the speed reducer rotates at a high speed, a sealing gland tightly compacts sealing packing, the output shaft of the speed reducer and a split type sealing seat through a sealing pressing block, lubricating oil in the speed reducer cannot seep out through the output shaft of the speed reducer, the aim of sealing is achieved, and the well site environment is protected.

However, the technical scheme has the following defects: after a period of use, the sealing pressing block and the sealing filler can be worn, so that the sealing pressing block and the sealing filler cannot be tightly connected with the output shaft of the speed reducer, and lubricating oil in the speed reducer still can seep out through the output shaft of the speed reducer.

Disclosure of Invention

The utility model aims to provide a sealing device for a speed reducer of an oil pumping machine, so as to solve at least one technical problem.

The utility model aims to solve the technical problems, and is realized by adopting the following technical scheme:

the utility model provides a pumping unit reduction gear sealing device, includes two seal holders of installing on the reduction gear, the seal holder is semi-annular, two all install the seal section of thick bamboo on the seal holder, two the seal section of thick bamboo covers on the axostylus axostyle of reduction gear, install a plurality of springs on the inner wall of seal section of thick bamboo, a plurality of fixedly connected with fly leaf on the other end of spring, install semi-annular closing plate on the one side that the fly leaf kept away from the spring.

Preferably, a plurality of clamping strips are arranged on one side, far away from the spring, of the movable plate, slots with the same number as the clamping strips are formed in the surface of the sealing plate, and the clamping strips are spliced with the slots.

Preferably, an elastic material is filled between the movable plate and the inner wall of the sealing cylinder.

Preferably, the elastic material is a sponge.

Preferably, two transverse plates are arranged on the sealing cylinder, a plurality of second bolts are arranged on the two transverse plates contacted with the sealing cylinder, and nuts are connected to the second bolts in a threaded mode.

Preferably, a plurality of first bolts are installed on the sealing seat, and the first bolts are in threaded connection with the speed reducer.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the spring is arranged, and can continuously push the movable plate and the sealing plate, so that the sealing plate continuously contacts with the shaft rod, and lubricating oil in the speed reducer is prevented from seeping out through the shaft rod due to abrasion of the sealing plate, thereby achieving the purpose of sealing.

2. According to the utility model, the clamping strips and the slots are arranged, so that the sealing plate is detachably arranged on the movable plate, and the sealing plate is convenient to replace in the later period, thereby being convenient for prolonging the service life of the device.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is an enlarged partial schematic view of FIG. 2 in accordance with the present utility model;

reference numerals: 1. a sealing seat; 11. a first bolt; 2. a sealing cylinder; 21. a movable plate; 22. a spring; 23. an elastic material; 24. clamping strips; 25. a sealing plate; 26. a slot; 27. a cross plate; 28. a second bolt; 29. a nut; 3. a speed reducer; 31. and a shaft lever.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Specific embodiments of the present utility model are described below with reference to the accompanying drawings.

Examples

As shown in fig. 1-3, the sealing device of the pumping unit speed reducer comprises two sealing seats 1 arranged on the speed reducer 3, wherein the sealing seats 1 are semi-annular, a plurality of first bolts 11 are arranged on the sealing seats 1, and the first bolts 11 are in threaded connection with the speed reducer 3; the sealing barrels 2 are installed on the two sealing seats 1, a cylinder can be formed after the two sealing barrels 2 are spliced, the two sealing barrels 2 are covered on the shaft rod 31 of the speed reducer 3, the two transverse plates 27 are installed on the sealing barrels 2, when the two sealing barrels 2 are spliced, the transverse plates 27 on the sealing barrels 2 are also contacted, a plurality of second bolts 28 are spliced on the transverse plates 27 positioned above, the lower ends of the second bolts 28 extend to the lower parts of the transverse plates 27 positioned below, and nuts 29 are connected to the lower ends of the second bolts 28 in a threaded mode.

A plurality of springs 22 are arranged on the inner wall of the sealing cylinder 2, a movable plate 21 is fixedly connected to the other ends of the springs 22, the movable plate 21 is arc-shaped, an annular shape can be formed after the two movable plates 21 are in butt joint, an elastic material 23 is filled between the movable plate 21 and the inner wall of the sealing cylinder 2, and the elastic material 23 is sponge. A semi-annular sealing plate 25 is arranged on one side of the movable plate 21 far away from the spring 22, a plurality of clamping strips 24 are arranged on one side of the movable plate 21 far away from the spring 22, slots 26 with the same number as the clamping strips 24 are arranged on the surface of the sealing plate 25, and the clamping strips 24 are spliced with the slots 26.

Working principle: in specific use, the seal holder 1 is mounted on the speed reducer 3 by using the first bolts 11, the seal cylinder 2 on the seal holder 1 supports the shaft lever 31, then the other seal cylinder 2 is covered on the fixed seal cylinder 2, the transverse plates 27 on the two seal cylinders 2 are aligned, the transverse plates 27 on the two seal cylinders 2 are connected together by using the second bolts 28 and the second nuts 29, finally the seal holder 1 positioned above is fixed on the speed reducer 3 by using the first bolts 11, so that the two seal cylinders 2 are covered on the shaft lever 31, the two seal plates 25 form a ring shape to wrap the shaft lever 31, lubricating oil in the speed reducer 3 is prevented from seeping out through the shaft lever 31, the purpose of sealing is achieved, after the speed reducer 3 drives the shaft lever 31 to run for one time, the seal plates 25 gradually wear, the spring 22 continuously pushes the movable plates 21 to move, and further pushes the seal plates 25 to contact with the shaft lever 31, and lubricating oil seeping out from the shaft lever 31 in the speed reducer 3 is prevented from continuously contacting the shaft lever 31.

After a long period of use, the sealing plate 25 can be replaced by unscrewing the first bolt 11 from the speed reducer 3, separating the nut 29 from the second bolt 28, removing the device from the speed reducer 3, pushing the sealing plate 25 along the circumferential direction of the sealing cylinder 2, separating the slot 26 on the sealing plate 25 from the clamping strip 24, removing the old sealing plate 25 from the movable plate 21, inserting the slot 26 on the new sealing plate 25 into the clamping strip 24, thereby completing replacement of the sealing plate 25, and mounting the two sealing seats 1 on the speed reducer 3 by repeating the steps; the sealing plate 25 is replaced periodically, so that the service life of the device is prolonged.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pumping unit reduction gear sealing device, includes two seal receptacle (1) of installing on reduction gear (3), seal receptacle (1) are semi-annular, two seal receptacle (1) are last all to install sealed section of thick bamboo (2), two sealed section of thick bamboo (2) cover on axostylus axostyle (31) of reduction gear (3), its characterized in that: a plurality of springs (22) are arranged on the inner wall of the sealing cylinder (2), a movable plate (21) is fixedly connected to the other ends of the springs (22), and a semi-annular sealing plate (25) is arranged on one side, far away from the springs (22), of the movable plate (21).

2. The pumping unit reducer sealing arrangement of claim 1, wherein: a plurality of clamping strips (24) are arranged on one side, far away from the spring (22), of the movable plate (21), slots (26) with the same number as the clamping strips (24) are formed in the surface of the sealing plate (25), and the clamping strips (24) are spliced with the slots (26).

3. The pumping unit reducer sealing arrangement of claim 2, wherein: elastic materials (23) are filled between the movable plate (21) and the inner wall of the sealing cylinder (2).

4. A pumping unit reducer sealing arrangement according to claim 3, wherein: the elastic material (23) is a sponge.

5. The pumping unit reducer sealing arrangement of claim 1, wherein: two transverse plates (27) are arranged on the sealing cylinder (2), a plurality of second bolts (28) are arranged on the two transverse plates (27) which are contacted with the sealing cylinder (2), and nuts (29) are connected to the second bolts (28) in a threaded mode.

6. The pumping unit reducer sealing arrangement of claim 5, wherein: the sealing seat (1) is provided with a plurality of first bolts (11), and the first bolts (11) are in threaded connection with the speed reducer (3).