CN110439804B

CN110439804B - Lubricating device for deep well pump transmission shaft

Info

Publication number: CN110439804B
Application number: CN201910579512.0A
Authority: CN
Inventors: 白俊江; 王坚; 赵雷刚
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2021-04-30
Anticipated expiration: 2039-06-28
Also published as: CN110439804A

Abstract

The invention discloses a lubricating device for a deep well pump transmission shaft, which comprises an oil tank, a bearing assembly and a filtering assembly, wherein the oil tank is arranged between the bottom of a motor of a deep well pump and the top of a transmission shaft system of the deep well pump; the bearing assembly comprises a bearing seat, a bearing cover and a bearing, the bearing seat, bearing cover and bearing all suit are on the transmission shaft of transmission shafting, the top of bearing seat is fixed in the bottom of oil tank, and the bottom of bearing seat passes the bottom of oil tank and the tubular column top fixed connection of transmission shafting, the top at the bearing seat is installed to the bearing cover, bearing fixed mounting is in the bearing seat, filtering component includes the filter, the filter is fixed to be adorned on the outer wall of oil tank, the oil inlet of filter and the annular space intercommunication of lubrication between tubular column and the transmission shaft, the first oil-out and the bearing seat intercommunication of filter, the second oil-out and the oil. According to the invention, the transmission shaft is arranged in an independent lubricating environment through the arrangement of the oil tank and the bearing assembly, so that the corrosion of liquid cargo to the transmission shaft is avoided.

Description

Lubricating device for deep well pump transmission shaft

Technical Field

The invention belongs to the field of deep well pumps, and particularly relates to a lubricating device for a transmission shaft of a deep well pump.

Background

A deep-well pump is a device for pumping liquid cargo from inside a liquid cargo tank to outside the liquid cargo tank. A conventional deep well pump generally includes a pump body disposed in a cargo tank, a motor disposed outside the cargo tank, and a transmission shaft system disposed between the pump body and the motor, wherein a transmission shaft in the transmission shaft system is used for transmitting power output by the motor to the pump body, and during rotation of the transmission shaft, due to friction, the transmission shaft is worn and generates a large amount of heat, so that a corresponding lubricating device is required to reduce friction and heat of the transmission shaft as much as possible.

A lubricating device commonly used at present lubricates and cools a transmission shaft by using a transported liquid cargo.

However, some liquid cargo may have strong acid, strong alkali, strong corrosion, etc., and when the liquid cargo is used to lubricate the transmission shaft, the liquid cargo may corrode the transmission shaft, which may reduce the service life of the transmission shaft.

Disclosure of Invention

The embodiment of the invention provides a lubricating device for a transmission shaft of a deep-well pump, which can provide an independent lubricating environment for the transmission shaft of the deep-well pump and avoid direct contact of liquid cargo with the transmission shaft. The technical scheme is as follows:

the embodiment of the invention provides a lubricating device for a deep well pump transmission shaft, which comprises an oil tank, a bearing assembly and a filtering assembly, wherein the oil tank is arranged between the bottom of a motor of a deep well pump and the top of a transmission shaft system of the deep well pump; the bearing assembly comprises a bearing seat, a bearing cover and a bearing, wherein the bearing seat, the bearing cover and the bearing are sleeved on a transmission shaft of a transmission shaft system, the top of the bearing seat is fixed in the bottom of an oil tank, the bottom of the bearing seat penetrates through the bottom of the oil tank and is fixedly connected with the top of a tubular column of the transmission shaft system, the bearing cover is arranged at the top of the bearing seat, the bearing is fixedly arranged in the bearing seat, a filtering assembly comprises a filter, the filter is fixedly arranged on the outer wall of the oil tank, an oil inlet of the filter is communicated with a lubricating annulus between the tubular column and the transmission shaft, a first oil outlet of the filter is communicated with the bearing seat, and a second oil outlet of the filter is communicated with the oil tank.

In an implementation manner of the invention, a communication hole and a first through hole are formed in the side surface of the bearing seat, the communication hole is communicated with the first oil outlet, a second through hole is formed in the side surface of the bearing cover, and the first through hole and the second through hole are both communicated with the oil tank.

In another implementation manner of the present invention, the bearing assembly further includes a sealing element, the sealing element includes a transition shaft sleeve and a shaft seal, the transition shaft sleeve and the shaft seal are both sleeved on the transmission shaft, the transition shaft sleeve is clamped between the transmission shaft and the bearing cap, and the shaft seal is clamped between the transition shaft sleeve and the bearing cap.

In another implementation manner of the present invention, the bearing assembly further includes a positioning element, the positioning element is sleeved on the transmission shaft, and the positioning element abuts against the top of the transition shaft sleeve.

In another implementation of the present invention, the bearing assembly further includes a pumping ring and a pumping ring sleeve, the pumping ring sleeve is coaxially sleeved on the transmission shaft, the top of the pumping ring sleeve abuts against the bottom of the transition sleeve, and the pumping ring is coaxially sleeved on the pumping ring sleeve.

In another implementation manner of the present invention, the filter includes a housing, a supporting seat, and a filter element, the housing and the supporting seat are both fixedly mounted on an outer wall of the oil tank, the supporting seat is disposed inside the housing, the filter element is mounted on the supporting seat, the first oil outlet and the second oil outlet are both disposed on an outer wall of the housing, and the oil inlet is disposed at a bottom of the housing.

In yet another implementation of the invention, the filter assembly further includes a vent valve disposed at a top end of the housing.

In another implementation manner of the present invention, the filter assembly further includes an oil supply joint, the oil supply joint is disposed on a side wall of the oil tank, and an output end of the oil supply joint is communicated with the inside of the housing.

In another implementation manner of the present invention, the lubricating device further includes a transmission assembly, the transmission assembly includes a first connection pipe and a second connection pipe, one end of the first connection pipe is connected to the side wall of the housing, the other end of the first connection pipe is connected to the communication hole, one end of the second connection pipe is communicated with the second oil outlet, and the other end of the second connection pipe extends into the oil tank.

In another implementation manner of the present invention, the transmission assembly further includes a third connection pipe, one end of the third connection pipe is communicated with the oil inlet, and the other end of the third connection pipe is communicated with the lubrication annulus through the pump head of the deep-well pump.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

when the lubricating device for the deep-well pump transmission shaft provided by the embodiment of the invention is used for lubricating a transmission shaft system, the lubricating device is firstly arranged between a deep-well pump motor and the transmission shaft, then the lubricating annular space between the transmission shaft and a pipe column is filled with lubricating oil, the lubricating oil enters the filter assembly through the oil inlet of the filter, the lubricating oil can filter impurities through the filter, then the lubricating oil inputs the filtered lubricating oil into the lubricating annular space through the first oil outlet, so that the deep-well pump transmission shaft is completely immersed into the filtered lubricating oil, the lubricating oil can circularly flow in the lubricating annular space and the filter assembly, and in addition, the oil tank can also supplement the lubricating oil in the lubricating annular space. In addition, the lubricating annular space is communicated with the filtering component, so that the circulating flow of lubricating oil can be realized, the lubricating oil can be continuously filtered and cleaned, the lubricating oil in the lubricating annular space is kept clean, and the corrosion of impurities to the transmission shaft is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a sectional view of a lubrication apparatus for a drive shaft of a deep well pump according to an embodiment of the present invention;

FIG. 2 is a sectional view of a bearing assembly in the lubricating apparatus according to the embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a structural sectional view of a filter assembly in a lubricating device according to an embodiment of the present invention.

The symbols in the drawings represent the following meanings:

1. an oil tank; 11. a liquid level meter; 12. an access cover; 13. a steel plate; 131. a hollow mounting table; 2. a bearing assembly; 21. a bearing seat; 210. a communicating hole; 211. a first through hole; 22. a bearing cap; 221. a second through hole; 23. a bearing; 24. a seal member; 241. a transition shaft sleeve; 242. shaft sealing; 243. a sealing seat; 244. a first seal ring; 245. a second seal ring; 25. a positioning member; 251. a retainer ring; 252. positioning the shaft sleeve; 2521. a groove; 253. a third seal ring; 26. a pumping ring; 27. a pumping ring sleeve; 3. a filter assembly; 31. a filter; 3100. an oil inlet; 3101. a first oil outlet; 3102. a second oil outlet; 311. a housing; 312. a supporting seat; 3121. an oil inlet hole; 313. a filter element; 314. a fourth seal ring; 315. a fifth seal ring; 32. a vent valve; 33. an oil supply joint; 34. an oil supply joint; 341. a sixth seal ring; 4. a transmission assembly; 41. a first connecting pipe; 42. a second connecting pipe; 43. a third connecting pipe; 100. a motor shaft; 101. a coupling; 102. tightening the screw; 103. a flat bond; 200. a drive shaft; 300. a pipe string; 400. the annular space is lubricated.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the invention provides a lubricating device for a deep well pump transmission shaft, which comprises an oil tank 1, a bearing assembly 2 and a filtering assembly 3, wherein the oil tank 1 is arranged between the bottom of a motor of a deep well pump and the top of a transmission shaft system of the deep well pump, as shown in figure 1.

The bearing assembly 2 includes a bearing housing 21, a bearing cover 22, and a bearing 23. Bearing frame 21, bearing cap 22 and bearing 23 all suit are on the transmission shaft 200 of transmission shafting, and the top of bearing frame 21 is fixed in the bottom of oil tank 1, and the bottom of bearing frame 21 passes the bottom of oil tank 1 and transmission shafting's tubular column 300 top fixed connection, and bearing cap 22 is installed at the top of bearing frame 21, and bearing 23 fixed mounting is in bearing frame 21.

The filter assembly 3 comprises a filter 31, the filter 31 is fixedly arranged on the outer wall of the oil tank 1, an oil inlet 3100 of the filter 31 is communicated with a lubricating annulus 400 between the pipe column 300 and the transmission shaft 200, a first oil outlet 3101 of the filter 31 is communicated with the bearing seat 21, and a second oil outlet 3102 of the filter 31 is communicated with the oil tank 1.

When the lubricating device for the deep-well pump transmission shaft provided by the embodiment of the invention is used for lubricating the transmission shaft, firstly, the lubricating device is arranged between a deep-well pump motor and the transmission shaft 200, then lubricating oil is filled in a lubricating annular space 400 between the transmission shaft 200 and a pipe column 300, the lubricating oil enters the filter assembly 3 through an oil inlet 3100 of the filter 31, impurities can be filtered out by the lubricating oil through the filter 31, and then the filtered lubricating oil is input into the lubricating annular space 400 through a first oil outlet 3101, so that the deep-well pump transmission shaft 200 is completely immersed in the filtered lubricating oil, the lubricating oil can circularly flow between the lubricating annular space 400 and the filter assembly 3, and in addition, the oil tank 1 can also supplement the lubricating oil in the lubricating annular space 400. In the invention, the transmission shaft 200 is arranged in an independent lubricating environment through the arrangement of the oil tank 1 and the bearing assembly 2, so that the transmission shaft 200 is prevented from being corroded by liquid cargo, the service life of the transmission shaft 200 is prolonged, the application range of a deep-well pump is widened, in addition, the lubricating annular space 400 is communicated with the filtering assembly 3, the circulating flow of lubricating oil can also be realized, the lubricating oil is continuously filtered and cleaned, the lubricating oil in the lubricating annular space 400 is kept clean, and the corrosion of impurities to the transmission shaft 200 is avoided.

In this embodiment, the motor shaft 100 and the transmission shaft 200 are connected together by a coupler 101, the coupler 101 is axially positioned by a set screw 102, and the outer peripheral walls of the motor shaft 100 and the transmission shaft 200 are respectively provided with a flat key 103, and the coupler 101 is fixed on the flat key 103 by the set screw 102.

In the above implementation, the coupling 101 facilitates the connection of the transmission shaft 200 and the motor shaft 100, and the flat key 103 facilitates the transmission of the power of the motor shaft 100 to the transmission shaft 200.

Optionally, a liquid level meter 11 is provided on a side wall of the fuel tank 1. The level gauge 11 is used to observe the level of the lubricating oil inside the tank 1.

Optionally, an access cover 12 is arranged on the side wall of the oil tank 1, the access cover 12 is arranged opposite to the coupler 101, and the access cover 12 is convenient to inspect and repair, so that the difficulty of maintenance is reduced.

Fig. 2 is a structural sectional view of a bearing assembly in the lubricating device, please refer to fig. 2, and optionally, a communication hole 210 and a first through hole 211 are formed in the side surface of the bearing seat 21, the communication hole 210 is communicated with the first oil outlet 3101, a second through hole 221 is formed in the side surface of the bearing cover 22, and both the first through hole 211 and the second through hole 221 are communicated with the oil tank 1.

Fig. 3 is an enlarged view of a portion a in fig. 2, please refer to fig. 3, specifically, a communication hole 210 and a plurality of first through holes 211 are formed on a side surface of the bearing seat 21, wherein an inner diameter of the communication hole 210 is larger than inner diameters of the other first through holes 211.

In the above implementation, the communication hole 210 is provided to facilitate the oil in the filter assembly 3 to flow into the bearing housing 21, and the communication hole 210 having a larger inner diameter is designed to rapidly introduce the oil from the filter assembly 3 into the bearing housing 21 and the pipe string 300. The first through hole 211 and the second through hole 221 are disposed to facilitate the supply of the lubricating oil from the oil tank 1 to the bearing housing 21.

Optionally, the bearing assembly 2 further includes a sealing member 24, the sealing member 24 includes a transition bushing 241 and a shaft seal 242, the transition bushing 241 and the shaft seal 242 are both sleeved on the transmission shaft 200, the transition bushing 241 is interposed between the transmission shaft 200 and the bearing cap 22, and the shaft seal 242 is interposed between the transition bushing 241 and the bearing cap 22.

In the above implementation, the shaft seal 242 is used for sealing oil in the bearing assembly 2 from leaking out, and meanwhile, impurities in the oil are prevented from directly entering the inside of the bearing assembly 2, and the transition bushing 241 is used for achieving the positioning of the bearing 23 and the sealing of the shaft seal 242.

Referring again to fig. 2, the sealing member 24 preferably further includes a sealing seat 243, a first sealing ring 244 and a second sealing ring 245. The seal holder 243 is fixed to the fuel tank 1. The first seal ring 244 is interposed between the fuel tank 1 and the seal holder 243, and the second seal ring 245 is interposed between the bearing housing 21 and the seal holder 243.

In the above implementation, the first sealing ring 244 is used to seal the sealing seat 243 with the oil tank 1, so as to prevent oil from leaking into the cabin; the second sealing ring 245 is used for sealing between the sealing seat 243 and the bearing seat 21, so that oil is prevented from leaking into the cabin, and the sealing seat 243 and the bearing seat 21 are in clearance fit, so that the height of the bearing seat 21 can be adjusted, and the requirement on the height machining precision of the bearing seat 21 and the pipe column 300 is lowered. Specifically, the first seal 244 is a sealing gasket and the second seal 245 is an O-ring.

Referring to fig. 3 again, preferably, the bearing assembly 2 further includes a positioning member 25, the positioning member 25 is disposed on the transmission shaft 200, and the positioning member 25 abuts against the top of the transition shaft sleeve 241.

In this embodiment, the positioning element 25 includes a retaining ring 251 and a positioning shaft sleeve 252, the retaining ring 251 and the positioning shaft sleeve 252 are both sleeved on the transmission shaft 200, the retaining ring 251 is fixed at one end of the positioning shaft sleeve 252 close to the motor, a groove 2521 is formed at one end of the positioning shaft sleeve 252 far from the motor, and the top of the transition shaft sleeve 241 is clamped in the groove 2521.

In this embodiment, the positioning element 25 further includes a third sealing ring 253, and the third sealing ring 253 is interposed between the positioning sleeve 252 and the transmission shaft 200

In the above implementation, the retainer ring 251 can more simply and conveniently axially position the transmission shaft 200, and the positioning sleeve 252 facilitates fixing and mounting of the retainer ring 251; the third seal ring 253 is arranged to effectively seal the transmission shaft 200 radially, so that the lubricating oil cannot seep out of the lubricating annulus 400.

Referring again to fig. 3, optionally, the bearing assembly 2 further includes a pumping ring 26 and a pumping ring sleeve 27, the pumping ring sleeve 27 is coaxially sleeved on the transmission shaft 200, the top of the pumping ring sleeve 27 abuts against the bottom of the transition sleeve 241, and the pumping ring 26 is coaxially sleeved on the pumping ring sleeve 27.

In this embodiment, the pumping ring sleeve 27 is mounted on the drive shaft 200 by a flat key 103, and the pumping ring 26 is fixed to the pumping ring sleeve 27 by set screws 102.

In the above implementation manner, the pumping ring shaft sleeve 27 is convenient for transmitting the power of the transmission shaft 200 to the pumping ring 26, and the arrangement of the pumping ring 26 is simple and convenient for pumping the lubricating oil to the filter assembly 3 from the lubricating ring 400, so that the lubricating oil can be circularly filtered and sufficiently cooled.

Fig. 4 is a structural cross-sectional view of a filter assembly in the lubricating apparatus, please refer to fig. 4, and optionally, the filter 31 includes a housing 311, a support seat 312 and a filter element 313, the housing 311 and the support seat 312 are both fixedly mounted on an outer wall of the oil tank 1, the support seat 312 is disposed inside the housing 311, the filter element 313 is mounted on the support seat 312, the first oil outlet 3101 and the second oil outlet 3102 are both disposed on an outer wall of the housing 311, and the oil inlet 3100 is disposed at a bottom of the housing 311.

In the above implementation manner, the casing 311 is provided to facilitate fixing and supporting the filter element 313 and the whole filter assembly 3, the support seat 312 is used to support the filter element 313, and the filter element 313 is convenient to filter and remove impurities from the lubricating oil.

In this embodiment, specifically, the steel plate 13 is welded at the bottom of the oil tank 1, the hollow mounting table 131 is arranged on one side of the steel plate 13 close to the filter assembly 3, the supporting seat 312 is fixed on the hollow mounting table 131 of the oil tank 1, the bottom of the supporting seat 312 is provided with an oil inlet 3121, and the oil inlet 3121 is communicated with the oil inlet 3100.

In this embodiment, a fourth sealing ring 314 is disposed between the housing 311 and the supporting seat 312, and the fourth sealing ring 314 effectively prevents oil from directly entering the bearing assembly 2 without passing through the filter element 313.

In this embodiment, the fifth seal 315 is provided between the housing 311 and the oil tank 1, and the fifth seal 315 can effectively prevent oil from leaking between the housing 311 and the oil tank 1.

Optionally, the filter assembly 3 further comprises a vent valve 32, the vent valve 32 being disposed at a top end of the housing 311.

In the above implementation, the vent valve 32 is used for exhausting the lubricating device to avoid the lubricating oil from increasing in temperature during use to generate air pressure inside the lubricating device and to timely relieve the pressure of the expanding air

Optionally, the filter assembly 3 further includes an oil supply joint 33, the oil supply joint 33 is disposed on a side wall of the oil tank 1, and an output end of the oil supply joint 33 communicates with the inside of the housing 311.

Specifically, in the present embodiment, the oil supply joint 33 is provided on the side of the hollow mount 131 away from the oil tank 1, and the oil supply joint 33 communicates with the oil inlet hole 3121 and the oil inlet 3100.

In the above implementation, the oil supply joint 33 is used to supply oil to the filter assembly 3.

Referring to fig. 1 again, optionally, the lubricating device further includes a transmission assembly 4, the transmission assembly 4 includes a first connection pipe 41 and a second connection pipe 42, one end of the first connection pipe 41 is connected to the side wall of the housing 311, the other end of the first connection pipe 41 is connected to the communication hole 210, one end of the second connection pipe 42 is communicated with the second oil outlet 3102, and the other end of the second connection pipe 42 extends into the oil tank 1.

In the above implementation, the first connection pipe 41 is used for directly feeding the filtered lubricating oil into the lubricating annulus 400, the second connection pipe 42 is used for conveniently feeding the filtered lubricating oil into the oil tank 1, and the oil stored in the oil tank 1 is used for conveniently replenishing the oil into the interior of the bearing assembly 2.

In this embodiment, the filtering assembly 3 further includes an oil supply joint 34, two ends of the oil supply joint 34 are respectively disposed between the housing 311 and the oil tank 1, and the first connecting pipe 41 and the first oil outlet 3101 are respectively communicated with two ends of the oil supply joint 34. The above arrangement facilitates the transfer of the lubricating oil from the housing 311 to the first connecting pipe 41, eventually allowing the oil to enter the bearing assembly 2.

Optionally, the transfer assembly 4 further comprises a third connecting pipe 43, one end of the third connecting pipe 43 is communicated with the oil inlet 3100, and the other end of the third connecting pipe 43 is communicated with the lubrication annulus 400 through a pump head of the deep-well pump.

Specifically, in the present embodiment, the pumping ring 26 pumps the lubricating oil in the lubricating annulus 400 to the third connecting pipe 43, and the lubricating oil is transmitted to the filter assembly 3 through the third connecting pipe 43.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A lubricating device for a deep well pump transmission shaft is characterized by comprising an oil tank (1), a bearing assembly (2) and a filtering assembly (3), wherein the oil tank (1) is arranged between the bottom of a motor of a deep well pump and the top of a transmission shaft system of the deep well pump;

the bearing assembly (2) comprises a bearing seat (21), a bearing cover (22) and a bearing (23), the bearing seat (21), the bearing cover (22) and the bearing (23) are all sleeved on a transmission shaft (200) of a transmission shaft system, the top of the bearing seat (21) is fixed in the bottom of the oil tank (1), the bottom of the bearing seat (21) penetrates through the bottom of the oil tank (1) to be fixedly connected with the top of a pipe column (300) of the transmission shaft system, the bearing cover (22) is installed at the top of the bearing seat (21), and the bearing (23) is fixedly installed in the bearing seat (21);

the filter assembly (3) comprises a filter (31), the filter (31) is fixedly arranged on the outer wall of the oil tank (1), an oil inlet (3100) of the filter (31) is communicated with a lubricating annulus (400) between the pipe column (300) and the transmission shaft (200), a first oil outlet (3101) of the filter (31) is communicated with the bearing seat (21), a second oil outlet (3102) of the filter (31) is communicated with the oil tank (1), a communication hole (210) and a first through hole (211) are formed in the side surface of the bearing seat (21), the communication hole (210) is communicated with the first oil outlet (3101), a second through hole (221) is formed in the side surface of the bearing cover (22), the first through hole (211) and the second through hole (221) are both communicated with the oil tank (1), and the bearing assembly (2) further comprises a sealing element (24), the sealing element (24) comprises a transition shaft sleeve (241) and a shaft seal (242), the transition shaft sleeve (241) and the shaft seal (242) are sleeved on the transmission shaft (200), the transition shaft sleeve (241) is clamped between the transmission shaft (200) and the bearing cover (22), the shaft seal (242) is clamped between the transition shaft sleeve (241) and the bearing cover (22), the bearing assembly (2) further comprises a pumping ring (26) and a pumping ring shaft sleeve (27), the pumping ring shaft sleeve (27) is coaxially sleeved on the transmission shaft (200), the top of the pumping ring shaft sleeve (27) is abutted against the bottom of the transition shaft sleeve (241), and the pumping ring (26) is coaxially sleeved on the pumping ring shaft sleeve (27).

2. The lubrication device as recited in claim 1, wherein the bearing assembly (2) further comprises a positioning member (25), the positioning member (25) is sleeved on the transmission shaft (200), and the positioning member (25) abuts against the top of the transition shaft sleeve (241).

3. The lubrication device according to claim 1, wherein the filter (31) comprises a housing (311), a support seat (312), and a filter element (313), the housing (311) and the support seat (312) are both fixedly mounted on an outer wall of the oil tank (1), the support seat (312) is disposed inside the housing (311), the filter element (313) is mounted on the support seat (312), the first oil outlet (3101) and the second oil outlet (3102) are both disposed on an outer wall of the housing (311), and the oil inlet (3100) is disposed at a bottom of the housing (311).

4. The lubrication device according to claim 3, characterized in that the filter assembly (3) further comprises a vent valve (32), the vent valve (32) being arranged at the top end of the housing (311).

5. The lubrication device according to claim 3, characterized in that the filter assembly (3) further comprises an oil supply joint (33), the oil supply joint (33) being provided on a side wall of the oil tank (1), the oil supply joint (33) communicating with the interior of the housing (311).

6. The lubrication device according to claim 3, further comprising a transmission assembly (4), wherein the transmission assembly (4) comprises a first connecting pipe (41) and a second connecting pipe (42), one end of the first connecting pipe (41) is connected with the side wall of the housing (311), the other end of the first connecting pipe (41) is connected with the communication hole (210), one end of the second connecting pipe (42) is communicated with the second oil outlet (3102), and the other end of the second connecting pipe (42) extends into the oil tank (1).

7. The lubrication device according to claim 6, wherein the transfer assembly (4) further comprises a third connection pipe (43), one end of the third connection pipe (43) being in communication with the oil inlet (3100), the other end of the third connection pipe (43) being in communication with the lubrication annulus (400) through the pump head of the deep well pump.