Sealing device for reduction gearbox of oil pumping unit

Abstract

The utility model provides a pumping unit reduction gearbox sealing device which comprises a speed reducer body, a first cover body is attached to one side of the outer portion of the speed reducer body, an air bag is fixedly installed in the first cover body, an air inlet pipe is fixedly installed on one side of the outer portion of the air bag, and the top end of the air inlet pipe penetrates through the first cover body and extends to the outside. According to the sealing device for the reduction gearbox of the oil pumping unit, the first cover body and the reduction gearbox body are effectively sealed through the sealing gasket, the sealing gasket is prone to abrasion or corrosion damage after being used for a long time, and therefore the sealing effect is reduced, at the moment, the air inlet pipe is connected, air is guided into the air inlet pipe, the air enters the air bag, and the air bag expands; the gap between the first cover body and the speed reducer main body is filled again, use in emergency is facilitated, after the speed reducer stops working, the first cover body is dismounted to replace the sealing gasket, and the speed reducer is simple in structure, has the emergency function and avoids oil leakage.

Description

Technical Field

[0001] The utility model relates to the field of reduction boxes, in particular to a sealing device for a reduction box of an oil pump. Background Art

[0002] The oil pump is a kind of machine equipment for extracting oil, commonly known as "kowtow machine". It uses pressure to make oil come out of the well. When the oil pump is on the upstroke, the oil pipe elastically contracts and moves upward, driving the mechanical unblocking oil extraction device to move upward, hitting the sleeve to generate vibration; at the same time, the forward check valve is closed, and the reducing piston assembly blocks the oil. When the oil pump is on the downstroke, the oil pipe elastically stretches and moves downward, driving the mechanical unblocking oil extraction device to move downward, hitting the sleeve to generate vibration; at the same time, the reverse check valve is partially closed, and the reducing piston assembly still blocks the annular oil channel of the oil casing, so that a high-pressure area is formed in the area below the reverse check valve. This movement generates a reverse impact force on the oil flow channel in the formation.

[0003] The reducer is an independent closed transmission device between the prime mover and the working machine. It is used to reduce the speed and increase the torque to meet the work needs. In some occasions, it is also used to increase the speed, which is called a speed increaser. When selecting a reducer, you should compare the outer dimensions, transmission efficiency, load-bearing capacity, quality, price, etc. of different types and varieties of reducers based on the selection conditions, technical parameters, performance of the power machine, economy and other factors of the working machine, and select the most suitable reducer.

[0004] However, the sealing gasket of the oil pump reducer in the existing market is easily worn or corroded during long-term use, thereby reducing the sealing effect, causing the internal lubricating oil to leak out and making it impossible to carry out emergency treatment.

[0005] Therefore, it is necessary to provide a pumping unit reduction box sealing device to solve the above technical problems. Utility Model Content

[0006] The utility model provides a sealing device for an oil pump reduction box, which solves the problem that the sealing gasket of the oil pump reduction box in the existing market is easily worn or corroded during long-term use, thereby reducing the sealing effect, causing internal lubricating oil to leak and making emergency treatment impossible.

[0007] The utility model provides a sealing device for a pumping unit reducer, comprising: a reducer body, a first cover body attached to an outer side of the reducer body, an air bag fixedly installed inside the first cover body, an air intake pipe fixedly installed on an outer side of the air bag, the top end of the air intake pipe passes through the first cover body and extends to the outside, a sealing gasket is attached to an outer side of the air bag and located inside the first cover body, a second cover body is attached to an outer side of the first cover body, first mounting holes are equidistantly provided in an annular shape on an outer side of the first cover body, and the number of the first mounting holes is four, second mounting holes are equidistantly provided in an annular shape on an outer side of the second cover body, a first bolt is provided between the first mounting hole and the second mounting hole, and the first cover body and the second cover body form a detachable structure with the reducer body through the cooperation of the first bolt.

[0008] Preferably, a dust cover is attached to one side of the exterior of the second cover body, and a second bolt is provided between the dust cover and the second cover body.

[0009] Preferably, the dust cover is detachable through the second bolt and the second cover body.

[0010] Preferably, first positioning holes are equidistantly provided in an annular shape on one side of the outer side of the dust cover, and the number of the first positioning holes is four. Sliding rods penetrate the outer side of the dust cover through the first positioning holes, and the number of the sliding rods is four.

[0011] Preferably, one end of the four sliding rods passes through the second cover body, and a second positioning hole matched with the sliding rod is opened on the outside of the second cover body.

[0012] Preferably, a butt plate is fixedly installed between one ends of the four slide bars, one outer side of the butt plate fits with the other outer side of the airbag, and a spring is sleeved on the outside of the four slide bars and between the second cover body and the butt plate.

[0013] Compared with the related art, the sealing device of the oil pumping unit reduction box provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] The first cover body and the reducer body are effectively sealed by the sealing gasket. However, the sealing gasket is easily worn or corroded after long-term use, thereby reducing the sealing effect. At this time, the intake pipe is connected to introduce air, and the air enters the interior of the airbag. The airbag expands, so that the gap between the first cover body and the reducer body is filled again, which is convenient for use in emergency situations. When the reducer stops working, the first cover body is removed and the sealing gasket is replaced. The structure is simple and has an emergency function, which avoids oil leakage in the reducer and improves practicality. The first bolt facilitates the installation or disassembly of the first cover body and the second cover body with the reducer body, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of the oil pumping unit reduction box sealing device provided by the utility model;

[0017] Figure 2 for Figure 1 The schematic diagram of the airbag installation structure is shown;

[0018] Figure 3 for Figure 1 Schematic diagram of the back plate installation structure shown.

[0019] In the figure: 1. reducer body; 2. first cover body; 3. airbag; 4. air intake pipe; 5. sealing gasket; 6. second cover body; 7. first mounting hole; 8. second mounting hole; 9. first bolt; 10. dust cover; 11. second bolt; 12. first positioning hole; 13. sliding rod; 14. second positioning hole; 15. stop plate; 16. spring. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 A structural schematic diagram of a preferred embodiment of the oil pumping unit reduction box sealing device provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the airbag installation structure is shown; Figure 3 for Figure 1The schematic diagram of the abutment plate installation structure shown in the figure is a sealing device for a pumping unit reducer box, comprising: a reducer body 1, a first cover body 2 is attached to the outer side of the reducer body 1, an air bag 3 is fixedly installed inside the first cover body 2, an air intake pipe 4 is fixedly installed on the outer side of the air bag 3, the top of the air intake pipe 4 passes through the first cover body 2 and extends to the outside, a sealing gasket 5 is attached to the outer side of the air bag 3 and located inside the first cover body 2, a second cover body 6 is attached to the outer side of the first cover body 2, first mounting holes 7 are equidistantly opened in an annular shape on the outer side of the first cover body 2, and the number of the first mounting holes 7 is four, second mounting holes 8 are equidistantly opened in an annular shape on the outer side of the second cover body 6, and the number of the second mounting holes 8 is four, a first bolt 9 is provided between the first mounting hole 7 and the second mounting hole 8, and the first cover body 2 and the second cover body are connected. 6 forms a detachable structure with the reducer body 1 through the cooperation of the first bolt 9, and the first cover body 2 and the reducer body 1 are effectively sealed through the sealing gasket 5. However, after long-term use, the sealing gasket 5 is easily worn or corroded, thereby reducing the sealing effect. At this time, the intake pipe 4 is connected, and the intake pipe 4 introduces air. The air enters the interior of the airbag 3, and the airbag 3 expands, so that the gap between the first cover body 2 and the reducer body 1 is filled again, which is convenient for use in emergency situations. When the reducer stops working, the first cover body 2 is removed and the sealing gasket 5 is replaced. The structure is simple and has an emergency function, which avoids oil leakage in the reducer and improves practicality. The first bolt 9 is convenient for installing or disassembling the first cover body 6 and the second cover body 2 with the reducer body 1, which is convenient for maintenance.

[0022] A dust cover 10 is attached to one side of the outer side of the second cover body 6, and a second bolt 11 is provided between the dust cover 10 and the second cover body 6. The dust cover 10 forms a detachable structure with the second cover body 6 through the second bolt 11. The installation of the dust cover 10 effectively prevents dust from entering the reducer body 1, thereby extending the service life.

[0023] A first positioning hole 12 is equidistantly provided in an annular shape on one side of the outer side of the dust cover 10, and the number of the first positioning holes 12 is four. A sliding rod 13 is passed through the first positioning hole 12 on the outer side of the dust cover 10, and the number of the sliding rod 13 is four. One end of each of the four sliding rods 13 passes through the second cover body 6. A second positioning hole 14 matched with the sliding rod 13 is provided on the outer side of the second cover body 6. A butt plate 15 is fixedly installed between one end of the four sliding rods 13, and one side of the outer side of the butt plate 15 fits with the other side of the outer side of the airbag 3. A spring 16 is sleeved on the outer side of the four sliding rods 13 and located between the second cover body 6 and the butt plate 15. The spring 16 is always in a compressed state, so that the butt plate 15 squeezes the airbag 3, and the airbag 3 squeezes the sealing pad 5, thereby ensuring the sealing effect. When the airbag 3 is inflated, the butt plate 15 can move, and the spring 16 is compressed to provide expansion space for the airbag 3, thereby improving practicality.

[0024] The working principle of the oil pump reduction box sealing device provided by the utility model is as follows:

[0025] The first step: the first cover body 2 and the reducer body 1 are effectively sealed by the sealing gasket 5. However, after long-term use, the sealing gasket 5 is easily worn or corroded, thereby reducing the sealing effect. At this time, the intake pipe 4 is connected, and the intake pipe 4 introduces air. The air enters the interior of the airbag 3, and the airbag 3 expands, so that the gap between the first cover body 2 and the reducer body 1 is filled again, which is convenient for use in emergency situations. When the reducer stops working, the first cover body 2 is removed and the sealing gasket 5 is replaced. The structure is simple and has an emergency function, which avoids oil leakage in the reducer and improves practicality. The first bolt 9 is used to facilitate the installation or disassembly of the first cover body 6 and the second cover body 2 with the reducer body 1, which is convenient for maintenance.

[0026] Step 2: The installation of the dust cover 10 effectively prevents dust from entering the reducer body 1 and extends its service life. The spring 16 is always in a compressed state, so that the plate 15 squeezes the airbag 3, and the airbag 3 squeezes the sealing pad 5, ensuring the sealing effect. When the airbag 3 expands, the plate 15 can move, and the spring 16 is compressed to provide expansion space for the airbag 3, thereby improving practicality.

[0027] Compared with the related art, the sealing device of the oil pumping unit reduction box provided by the utility model has the following advantages:

[0028] Beneficial effects:

[0029] The first cover 2 and the reducer body 1 are effectively sealed by the sealing gasket 5. However, after long-term use, the sealing gasket 5 is easily worn or corroded, thereby reducing the sealing effect. At this time, the intake pipe 4 is connected, and the intake pipe 4 introduces air. The air enters the interior of the airbag 3, and the airbag 3 expands, so that the gap between the first cover 2 and the reducer body 1 is filled again, which is convenient for use in emergency situations. When the reducer stops working, the first cover 2 is removed and the sealing gasket 5 is replaced. The structure is simple and has an emergency function, which avoids oil leakage in the reducer and improves practicality. The first bolt 9 is used to facilitate the installation or disassembly of the first cover 6 and the second cover 2 with the reducer body 1, which is convenient for maintenance.

[0030] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Pumping unit reduction box sealing device, including: A reducer body (1), characterized in that: a first cover body (2) is attached to one side of the outside of the reducer body (1), an air bag (3) is fixedly installed inside the first cover body (2), an air intake pipe (4) is fixedly installed on one side of the outside of the air bag (3), the top end of the air intake pipe (4) passes through the first cover body (2) and extends to the outside, a sealing gasket (5) is attached to one side of the outside of the air bag (3) and located inside the first cover body (2), and a second cover body (6) is attached to one side of the outside of the first cover body (2). ), the first cover body (2) is provided with first mounting holes (7) in an equidistant circular shape on one side of its exterior, and the number of the first mounting holes (7) is four, the second cover body (6) is provided with second mounting holes (8) in an equidistant circular shape on one side of its exterior, and the number of the second mounting holes (8) is four, a first bolt (9) is provided between the first mounting hole (7) and the second mounting hole (8), and the first cover body (2) and the second cover body (6) form a detachable structure with the reducer body (1) through the cooperation of the first bolt (9).

2. The sealing device for the reduction box of the oil pumping unit according to claim 1, characterized in that: A dust cover (10) is attached to one side of the exterior of the second cover body (6), and a second bolt (11) is provided between the dust cover (10) and the second cover body (6).

3. The sealing device for the reduction box of the oil pumping unit according to claim 2, characterized in that: The dust cover (10) forms a detachable structure with the second cover body (6) through the second bolt (11).

4. The sealing device for the reduction box of the oil pumping unit according to claim 3, characterized in that: One side of the outside of the dust cover (10) is provided with first positioning holes (12) in an equidistant annular pattern, and the number of the first positioning holes (12) is four; the outside of the dust cover (10) is penetrated by a sliding rod (13) through the first positioning holes (12), and the number of the sliding rod (13) is four.

5. The sealing device for the reduction box of the oil pumping unit according to claim 4, characterized in that: One end of each of the four sliding rods (13) passes through the second cover body (6), and a second positioning hole (14) adapted to the sliding rod (13) is provided on the outside of the second cover body (6).

6. The sealing device for the reduction box of the oil pumping unit according to claim 5, characterized in that: A stop plate (15) is fixedly installed between one end of the four slide bars (13), one side of the outside of the stop plate (15) fits with the other side of the outside of the airbag (3), and a spring (16) is sleeved on the outside of the four slide bars (13) and between the second cover body (6) and the stop plate (15).

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