Pumping unit speed reducer with sealing element

Abstract

The pumping unit speed reducer comprises a shell, a sound insulation groove A and a sound insulation groove B. One side of the shell is provided with a shaft seat, the shaft seat is connected with an output shaft in a rotating mode, and the sealing piece is arranged between the shaft seat and the output shaft. The sealing piece comprises a sealing installation groove, a sealing cover, an inner groove, a sealing ring assembly, a fixing disc, a threaded fastener and a threaded hole. The sealing installation groove is formed in a port of the shaft seat. By means of the designed sealing piece, the interval between the output shaft and the shaft seat can be sealed and protected, after the sealing piece is used for a long time, a sealing ring assembly in the sealing piece needs to be replaced, at the moment, a threaded fastener can be screwed off, then a sealing cover is detached from the interior of a sealing installation groove, and the sealing ring assembly can be replaced. And then the sealing ring assembly can be easily taken out from the interior of the inner groove and replaced, the whole operation is simple and rapid, external auxiliary tools are not needed, and convenience is provided for personnel.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer technology, specifically relating to a speed reducer for an oil pumping unit with a sealing element. Background Technology

[0002] The pumping unit reducer is a key component of pumping unit equipment in the petroleum industry. It has the functions of torque output and speed reduction. The pumping unit reducer is mainly composed of input shaft, output shaft, gears (including internal gear ring, external gear ring, cylindrical gear, bevel gear, etc.), bearings, seals, lubrication system, cooling system and other auxiliary components (such as transmission sleeve, coupling, etc.).

[0003] The output shaft of the reducer extends outwards. To prevent external dust from entering the reducer body through the gap between the output shaft and the shaft seat, a seal is often installed between the output shaft and the shaft seat to provide sealing protection. However, the seal needs to be replaced after a long period of use, otherwise the sealing effect will be affected. Replacing the seal in existing reducers is often complicated and sometimes requires the use of external auxiliary tools. Therefore, a new type of oil pump reducer needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a pumping unit reducer with a sealing element, so as to solve the problem mentioned in the background art that the operation of replacing the sealing element of the existing reducer is not convenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pumping unit reducer with a seal, comprising a housing, a sound insulation groove A, and a sound insulation groove B. A shaft seat is provided on one side of the housing, and an output shaft is rotatably connected to the shaft seat. A seal is provided between the shaft seat and the output shaft. The seal includes a sealing mounting groove, a sealing cover, an inner groove, a sealing ring assembly, a fixing plate, a threaded fastener, and a threaded hole. The sealing mounting groove is opened at the port of the shaft seat. The sealing cover is installed inside the sealing mounting groove and fits around the outside of the output shaft. The inner groove is opened inside the sealing cover. The sealing ring assembly is installed inside the inner groove. The fixing plate is fixed to the outer edge of the sealing cover and contacts the surface of the shaft seat. The threaded fastener...

[0006] Fasteners are mounted on the surface of the fixed disc and threadedly connected to threaded holes in the surface of the bearing seat.

[0007] Preferably, the sealing ring assembly further includes a collar and a rubber pad, the collar being installed inside the inner groove, and the rubber pad being fixed to the inner side of the collar and fitted onto the outer surface of the output shaft.

[0008] Preferably, the sealing ring assembly further includes a plug rod and a plug groove, wherein the plug rod is fixed to the inner wall of the inner groove and plugs into the plug groove formed on the surface of the collar.

[0009] Preferably, there are two threaded fasteners, which are symmetrically distributed on both sides of the fixed disc.

[0010] Preferably, the seal further includes a rubber inner gasket, which is disposed on the inner wall of the sealing mounting groove.

[0011] Preferably, the outer shell includes a side shell A and a side shell B, the sound insulation groove A is formed on one side of the side shell A, and the sound insulation groove B is formed on one side of the side shell B and is adapted to the sound insulation groove A.

[0012] Preferably, the outer shell further includes support pile A and support pile B, with support pile A fixed to the inner wall of the sound insulation groove A, and support pile B fixed to the inner wall of the sound insulation groove B and abutting against support pile A.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The designed seal can protect the gap between the output shaft and the shaft seat. After the seal has been used for a long time, the internal sealing ring assembly needs to be replaced. At this time, the threaded fastener can be unscrewed, and then the sealing cover can be removed from the inside of the sealing mounting groove. Then the sealing ring assembly can be easily taken out from the inside of the groove and replaced. The whole operation is simple and quick and does not require external auxiliary tools, which provides convenience for personnel. Attached Figure Description

[0015] Figure 1 is a three-dimensional schematic diagram of this utility model;

[0016] Figure 2 is a side sectional view of the sealing element of this utility model;

[0017] Figure 3 shows the present invention. Figure 2 Enlarged view of area A in the middle;

[0018] Figure 4 is a cross-sectional view of the interior of the outer shell of this utility model;

[0019] In the diagram: 100, outer shell; 101, side shell A; 102, side shell B; 103, sound insulation groove A; 104, sound insulation.

[0020] 105. Groove B; 106. Support pile A; 107. Support pile B; 200. Shaft seat; 300. Output shaft; 400. Seal; 401. Seal mounting groove; 402. Seal cover; 403. Inner groove; 404. Seal ring assembly; 4041. Collar; 4042. Rubber pad; 4043. Insert rod; 4044. Insert groove; 405. Fixing plate; 406. Threaded fastener; 407. Threaded hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Please refer to Figure 1 to Figure 4 This embodiment provides a technical solution: a pumping unit reducer with a seal, comprising a housing 100, a sound insulation groove A103 and a sound insulation groove B104. A bearing seat 200 is provided on one side of the housing 100, and an output shaft 300 is rotatably connected to the bearing seat 200. A seal 400 is provided between the bearing seat 200 and the output shaft 300 to seal and protect the gap between the output shaft 300 and the bearing seat 200. The seal 400 includes a sealing mounting groove 401, a sealing cover 402, an inner groove 403, a sealing ring assembly 404, a fixing plate 405, a threaded fastener 406, and a threaded hole 407. The sealing mounting groove 401 is opened at the port of the bearing seat 200. The sealing cover 402 is installed inside the sealing mounting groove 401 and sleeved on the outside of the output shaft 300. The inner groove 403 is opened inside the sealing cover 402. The sealing ring assembly 404... The sealing ring assembly 404 is installed inside the inner groove 403 and is fitted on the outside of the output shaft 300 to provide a seal. The fixing plate 405 is fixed to the outer edge of the sealing cover 402 and contacts the surface of the shaft seat 200. The threaded fastener 406 is installed on the surface of the fixing plate 405 and is threadedly connected to the threaded hole 407 on the surface of the shaft seat 200. By tightening the threaded fastener 406, the seal 400 can be installed between the output shaft 300 and the shaft seat 200.

[0024] In this embodiment, preferably, the sealing ring assembly 404 further includes a collar 4041 and a rubber gasket 4042.

[0025] Ring 4041 is installed inside inner groove 403. Rubber pad 4042 is fixed inside ring 4041 and sleeved on outer surface of output shaft 300. Rubber pad 4042 can seal and protect the outside of output shaft 300. There is a very small gap between rubber pad 4042 and output shaft 300.

[0026] In this embodiment, preferably, the sealing ring assembly 404 further includes a plug rod 4043 and a plug groove 4044. The plug rod 4043 is fixed to the inner wall of the inner groove 403 and plugs into the plug groove 4044 opened on the surface of the collar 4041, so as to facilitate positioning the collar 4041 inside the inner groove 403.

[0027] In this embodiment, preferably, there are two threaded fasteners 406, which are symmetrically distributed on both sides of the fixed plate 405 to ensure a stable connection to the seal 400.

[0028] In this embodiment, preferably, the seal 400 further includes a rubber inner gasket, which is disposed on the inner wall of the sealing mounting groove 401 to provide buffer protection and thus improve the installation stability of the seal 400.

[0029] In this embodiment, preferably, the outer shell 100 includes a side shell A101 and a side shell B102. A sound insulation groove A103 is formed on one side of the side shell A101, and a sound insulation groove B104 is formed on one side of the side shell B102 and is adapted to the sound insulation groove A103. The sound insulation groove A103 and the sound insulation groove B104 form a sound insulation cavity. When the reducer is in use, the sound insulation cavity can reduce noise.

[0030] In this embodiment, preferably, the outer shell 100 further includes support pile A105 and support pile B106. Support pile A105 is fixed to the inner wall of the sound insulation groove A103, and support pile B106 is fixed to the inner wall of the sound insulation groove B104 and abuts against support pile A105 to support and strengthen the sound insulation cavity, thereby ensuring the strength of the outer shell 100.

[0031] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pumping unit reducer with a seal, comprising a housing (100), a sound insulation groove A (103), and a sound insulation groove B (104), characterized in that: A bearing seat (200) is provided on one side of the housing (100). An output shaft (300) is rotatably connected to the bearing seat (200). A seal (400) is provided between the bearing seat (200) and the output shaft (300). The seal (400) includes a sealing mounting groove (401), a sealing cover (402), an inner groove (403), a sealing ring assembly (404), a fixing disc (405), a threaded fastener (406), and a threaded hole (407). The sealing mounting groove (401) is located at the port of the bearing seat (200). The sealing cover (402) is installed inside the sealing mounting groove (401) and sleeved on the outside of the output shaft (300). The inner groove (403) is opened inside the sealing cover (402). The sealing ring assembly (404) is installed inside the inner groove (403). The fixing plate (405) is fixed on the outer edge of the sealing cover (402) and contacts the surface of the shaft seat (200). The threaded fastener (406) is installed on the surface of the fixing plate (405) and threadedly connected to the threaded hole (407) opened on the surface of the shaft seat (200).

2. The oil pump reducer with a seal according to claim 1, characterized in that: The sealing ring assembly (404) also includes a collar (4041) and a rubber pad (4042). The collar (4041) is installed inside the inner groove (403), and the rubber pad (4042) is fixed inside the collar (4041) and sleeved on the outer surface of the output shaft (300).

3. The oil pump reducer with a seal according to claim 2, characterized in that: The sealing ring assembly (404) further includes a plug rod (4043) and a plug groove (4044). The plug rod (4043) is fixed to the inner wall of the inner groove (403) and plugs into the plug groove (4044) opened on the surface of the collar (4041).

4. The oil pump reducer with a seal according to claim 3, characterized in that: There are two threaded fasteners (406), which are symmetrically distributed on both sides of the fixed plate (405).

5. A pumping unit reducer with a seal according to claim 4, characterized in that: The seal (400) also includes a rubber gasket disposed on the inner wall of the sealing mounting groove (401).

6. A pumping unit reducer with a seal according to claim 5, characterized in that: Institute 1 The outer shell (100) includes a side shell A (101) and a side shell B (102). The sound insulation groove A (103) is opened on one side of the side shell A (101), and the sound insulation groove B (104) is opened on one side of the side shell B (102) and is adapted to the sound insulation groove A (103).

7. A pumping unit reducer with a seal according to claim 6, characterized in that: The outer shell (100) also includes support pile A (105) and support pile B (106), the support pile A (105) being fixed to the inner wall of the sound insulation groove A (103), and the support pile B (106) being fixed to the inner wall of the sound insulation groove B (104) and abutting against the support pile A (105).

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