CN220955517U - Strong magnetic multistage polish rod sealing device for oil pumping unit - Google Patents
Strong magnetic multistage polish rod sealing device for oil pumping unit Download PDFInfo
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- CN220955517U CN220955517U CN202420669169.5U CN202420669169U CN220955517U CN 220955517 U CN220955517 U CN 220955517U CN 202420669169 U CN202420669169 U CN 202420669169U CN 220955517 U CN220955517 U CN 220955517U
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- 238000007789 sealing Methods 0.000 title claims abstract description 132
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 51
- 238000005086 pumping Methods 0.000 title claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 55
- 210000004907 gland Anatomy 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 14
- 229920001778 nylon Polymers 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims description 10
- 235000014121 butter Nutrition 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000002775 capsule Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000011553 magnetic fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to the technical field of polished rod sealing devices of pumping units, in particular to a strong-magnetic multistage polished rod sealing device of a pumping unit. The technical proposal is as follows: a lower ball sealing box is arranged in the inner cavity of the deviation adjusting seat, and a lower packing and a lower gasket are filled in the lower ball sealing box; an upper ball sealing box is arranged above the lower ball sealing box, an upper packing and an upper gasket are arranged in the upper ball sealing box, and Huang Youqiang is arranged above the upper packing; the upper ball body sealing box is characterized in that a strong magnetic box and a strong magnetic box gland are arranged above the upper ball body sealing box, a strong magnet is arranged in the strong magnetic box, a nylon bushing is arranged in the strong magnet, an air bag box is arranged on the upper part of the strong magnetic box, an air bag cavity gland is arranged at the top of the air bag box, and an air bag is arranged in the inner cavity of the air bag box. The beneficial effects are that: the utility model greatly reduces the downtime of the pumping unit, reduces the use cost of the polish rod sealer and polish rod and material replacement used in the prior art of the wellhead, reduces the ground environmental pollution of the wellhead, and reduces the labor intensity of workers.
Description
Technical Field
The utility model relates to the technical field of polished rod sealing devices of pumping units, in particular to a strong-magnetic multistage polished rod sealing device of a pumping unit.
Background
At present, in the oil exploitation process, a polish rod sealer is generally arranged at a wellhead of a pumping well, oil gas leakage can be prevented through the polish rod sealer, but in the use process of the polish rod sealer, certain eccentric wear can occur due to up-and-down reciprocating movement of a polish rod, packing in a packing box is worn out, the sealing effect is lost, the normal service life of the packing is reduced, and the phenomenon of leakage occurs, so that the packing needs to be replaced by frequent well stopping, the labor intensity of operators is increased, and environmental pollution is easily caused.
The Chinese patent number is CN201610372660.1, the patent name is magnetic booster polish rod sealer, in the cylindrical polish rod sealing box, 6 bar-shaped permanent magnet fixing sealing sleeves are embedded in the lower end, 6 bar-shaped permanent magnet sliding sealing sleeves are embedded in the upper end, magnetic fluid filler is filled between the upper sealing sleeve and the lower sealing sleeve, under the action of strong magnetic field attraction generated by 12 heterogenous relative permanent magnets, the sliding sealing sleeve always keeps the potential energy sliding towards the fixing sealing sleeve, so that the magnetic fluid filler is firmly adsorbed and pressed to form a telescopic high-pressure sealing area, and the polish rod can be sealed by the liquid strong lubrication filling sealing. But it has the problems that: this patent does not adopt traditional packing box, only relies on magnetism to seal the polished rod, does not adopt multistage sealing means, in specific use, if the condition of inefficacy appears, does not have other measures, can lead to appearing oil gas leakage, causes environmental pollution.
The Chinese patent number is CN202220949017.1, the patent name is 'gas storage type multistage polish rod sealing device', and the technical scheme is as follows: the upper end of the universal ball head is provided with a secondary sealing seat, the inner cavity of the secondary sealing seat is provided with a secondary sealing sleeve, the upper end of the secondary sealing seat is provided with a tertiary sealing seat, the inner cavity of the tertiary sealing seat is provided with a gas storage rubber capsule, the top of the tertiary sealing seat is provided with a gas storage rubber capsule sealing cover, and the upper side of the gas storage rubber capsule sealing cover is provided with magnetic steel. The beneficial effects are that: the packing, the secondary sealing sleeve and the gas storage rubber capsule are adopted for multistage sealing, the pressure of the gas storage rubber capsule can enable the gas storage rubber capsule to be seamless with the polish rod, sealing is better achieved, and the phenomena of running, overflowing, dripping and leaking are avoided. The problems that exist are: on one hand, although the magnetic steel is adopted, the magnetic steel is adsorbed around the polished rod to form a seal under the action of the attraction of a strong magnetic field, so that the friction coefficient between the magnetic steel and the polished rod is greatly reduced, the power consumption of the pumping unit is reduced, and the oil extraction cost is reduced; however, the strong magnet is directly contacted with the polish rod, so that the abrasion of the magnetic steel can be quickly caused, and the magnetic steel is excessively consumed; on the other hand, the gas storage rubber bag is directly contacted with the polish rod, so that the loss of the gas storage rubber bag is quick, and the replacement period is reduced; the third aspect is: the spring is not arranged below the packing in the inner cavity of the universal ball head, and the function of maintaining the expansion force of the auxiliary support of the packing can not be achieved for a long time.
Disclosure of utility model
The utility model aims at solving the defects existing in the prior art, and provides a strong magnetic multistage polish rod sealing device for an oil pumping unit, which is characterized in that on one hand, a nylon bushing is arranged in a strong magnet, so that the abrasion problem that the strong magnet directly acts on a polish rod is solved, on the other hand, an air bag is improved, a packing is arranged in the air bag, the consumption problem of the air bag is reduced, the replacement period is reduced, and on the other hand, a spring is arranged below the packing in an inner cavity of a universal ball head, so that the auxiliary support of the packing can be used for maintaining the expansion effect for a long time.
The utility model relates to a strong magnetic multistage polish rod sealing device of a pumping unit, which has the technical scheme that: the automatic deviation adjusting device comprises a deviation adjusting seat, a deviation adjusting cap, a rotating handle and a clamp head, wherein the deviation adjusting seat is fixedly arranged at the upper end of the clamp head through the deviation adjusting cap, the rotating handle is arranged at the outer side of the deviation adjusting cap, a ball seat is arranged above the deviation adjusting seat, a lower ball sealing box is arranged in an inner cavity of the deviation adjusting seat, and a lower packing and a lower gasket are filled in the lower ball sealing box; an upper ball sealing box is arranged above the lower ball sealing box, the lower part of the upper ball sealing box is fixed outside the deflection adjusting seat through an upper ball pressing cap, an upper packing and an upper gasket are arranged in the upper ball sealing box, and Huang Youqiang is arranged above the upper packing; the upper ball body sealing box is characterized in that a strong magnetic box and a strong magnetic box gland are arranged above the upper ball body sealing box, a strong magnet is arranged in the strong magnetic box, a nylon bushing is arranged in the strong magnet, an air bag box is arranged on the upper part of the strong magnetic box, an air bag cavity gland is arranged at the top of the air bag box, and an air bag is arranged in the inner cavity of the air bag box.
Preferably, the lower part of the upper sphere sealing box is of a hemispherical structure, the upper part of the lower sphere sealing box is of a hemispherical structure, and the upper sphere sealing box and the lower sphere sealing box are in contact fit to form a spherical structure and are sealed through a first sealing rubber ring.
Preferably, a spring and a spring bushing are mounted in the annulus between the upper gasket of the upper ball seal cartridge and the lower gasket of the lower ball seal cartridge, the spring being located in the spring bushing cavity.
Preferably, the upper end of the ball seat is a hemispherical groove, and the hemispherical structure at the upper part of the lower spherical sealing box is in fit contact with the hemispherical groove.
Preferably, the air bag comprises an air bag main body, an inflatable cavity and a spiral packing, wherein the air bag main body is of an annular structure, more than one group of inflatable cavities are arranged in the air bag main body, more than one group of spiral packing is arranged in the inner ring of the air bag main body, and the spiral packing is of an annular structure.
Preferably, a groove-shaped slider is arranged in the strong magnet, and a nylon bushing is arranged at the inner side of the groove-shaped slider.
Preferably, a partition board is arranged at the upper part of the inner cavity of the upper ball sealing box, a plurality of groups of packing inverted teeth are arranged below the partition board, a butter cavity is arranged above the partition board, a butter nozzle is arranged on the outer wall of the butter cavity, and a first gasket is arranged at the top of the upper ball sealing box.
The beneficial effects of the utility model are as follows: the nylon bushing is arranged in the strong magnet, and is tightly adsorbed with the polished rod through the attraction between the strong magnet and the polished rod of the oil pumping unit, so that dirt on the polished rod is scraped in the up-and-down motion operation of the polished rod, and the sealing component is protected; the spring bushing and the spring are arranged between the upper ball sealing box and the lower ball sealing box, so that the upper packing and the lower packing in the upper ball sealing box can be continuously paved to maintain the expansion force, and the sealing effect can be effectively achieved for a long time; on the other hand has improved the gasbag, installs spiral packing in the gasbag to can set up the cavity that aerifys of more than one set of, reduce the consumption problem of gasbag, reduce the cycle of changing, can reduce the down time of beam-pumping unit by a wide margin, reduce the polished rod sealer that the well head originally used and polished rod and the use cost that the material was changed, reduced the ground environmental pollution of well head, also reduced workman's intensity of labour.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a first embodiment of an airbag;
FIG. 3 is a schematic cross-sectional view of a strong magnet;
FIG. 4 is a top view of a ferromagnetic body;
FIG. 5 is a schematic structural view of an upper ball seal case;
FIG. 6 is a schematic structural view of another embodiment of an airbag;
FIG. 7 is a second construction schematic of the present utility model;
In the upper graph: the air bag cavity gland 1, gland screws 2, an air bag 3, an air bag box 4, a strong magnetic box gland 5, a groove type sliding block 6, a strong magnetic box 7, a sealing rubber ring 8, a nylon bushing 9, a strong magnet 10, a first gasket 11, a butter cavity 12, a butter nozzle 13, an upper ball sealing box 14, an upper packing 15, an upper gasket 16, an upper ball pressing cap 17, a spring 18, a spring bushing 19, a first sealing rubber ring 20, a second sealing rubber ring 21, a ball seat 22, a third sealing rubber ring 23, a lower ball sealing box 24, a lower packing 25, a lower gasket 26, a bias adjusting seat 27, a bias adjusting cap 28, a rotary handle 29, a fourth sealing rubber ring 30, a clamp head 31, an air bag main body 3.1, an inflatable cavity 3.2, a spiral packing 3.3, an outer protective sleeve 3.4, packing back teeth 14.1 and a partition 14.2.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
1, Referring to fig. 1-5, the strong magnetic multistage polish rod sealing device of the pumping unit comprises a deviation adjusting seat 27, a deviation adjusting cap 28, a rotary handle 29 and a clamp head 31, wherein the deviation adjusting seat 27 is fixedly arranged at the upper end of the clamp head 31 through the deviation adjusting cap 28, a fourth sealing rubber ring 30 is arranged between the clamp head 31 and the deviation adjusting seat 27, the rotary handle 29 is arranged at the outer side of the deviation adjusting cap 28, a ball seat 22 is arranged above the deviation adjusting seat 27, a lower ball sealing box 24 is arranged in an inner cavity of the deviation adjusting seat 27, and a lower packing 25 and a lower gasket 26 are filled in the lower ball sealing box 24; an upper ball sealing box 14 is arranged above the lower ball sealing box 24, the lower part of the upper ball sealing box 14 is fixed outside the deviation adjusting seat 27 through an upper ball pressing cap 17, an upper packing 15 and an upper gasket 16 are arranged in the upper ball sealing box 14, and Huang Youqiang is arranged above the upper packing 15; the upper sphere seal box 14 is provided with a strong magnetic box 7 and a strong magnetic box gland 5 above, the strong magnetic box 7 is internally provided with a strong magnetic body 10, the strong magnetic body 10 is internally provided with a nylon bushing 9, the upper part of the strong magnetic box 7 is provided with an air bag box 4, the top of the air bag box 4 is provided with a fixed air bag cavity gland 1 through a gland screw 2, the inner cavity of the air bag box 4 is provided with an air bag 3, and the lower end of the air bag box 4 is connected to the upper end of the strong magnetic box gland 5 through a seal rubber ring 8 and threads.
The lower part of the upper sphere sealing box 14 is of a hemispherical structure, the upper part of the lower sphere sealing box 24 is of a hemispherical structure, and the upper sphere sealing box and the lower sphere sealing box are in contact and matched to form a spherical structure and are sealed by the first sealing rubber ring 20.
The annular space between the upper gasket 16 of the upper ball seal housing 14 and the lower gasket 26 of the lower ball seal housing 24 houses the spring 18 and the spring bushing 19, the spring 18 being located within the interior cavity of the spring bushing 19.
The upper end of the ball seat 22 is a hemispherical groove, the hemispherical structure of the upper part of the lower ball seal box 24 is contacted with the hemispherical groove in a matching way, and the second seal rubber ring 21 is arranged, so that the sealing effect is improved; the third sealing rubber ring 23 is arranged between the lower end of the ball seat 22 and the top end of the deviation adjusting seat 27, so that the sealing effect is improved.
Referring to fig. 2, the air bag 3 of the present utility model comprises an air bag main body 3.1, an air inflation cavity 3.2 and a spiral packing 3.3, wherein the air bag main body 3.1 is of an annular structure, more than one group of air inflation cavities 3.2 are arranged in the air bag main body 3.1, more than one group of spiral packing 3.3 are arranged in an inner ring of the air bag main body 3.1, and the spiral packing 3.3 is of an annular structure.
Referring to fig. 5, a partition 14.2 is arranged at the upper part of the inner cavity of the upper sphere sealing box 14, a plurality of groups of packing inverted teeth 14.1 are arranged below the partition 14.2, so that the upper packing 15 is prevented from sliding in a cavity, friction can be increased, sealing performance is better, huang Youqiang is arranged above the partition 14.2, a grease nipple 13 is arranged on the outer wall, a first gasket 11 is arranged at the top of the upper sphere sealing box 14, and grease is filled in during operation to increase lubricity, reduce friction and prolong the service lives of the upper packing 15 and the lower packing 25.
According to the utility model, the air bag 3 is improved, more than one group of inflatable cavities 3.2 are arranged in the air bag 3, and more than one group of spiral packing 3.3 are arranged in the air bag 3, so that the consumption problem of the air bag 3 is reduced; in addition, a nylon bushing 9 is arranged in the strong magnet 10, and the nylon bushing 9 is tightly adsorbed with the polish rod through the attraction between the strong magnet 10 and the polish rod of the oil pumping unit, so that the effect of scraping dirt on the polish rod in the up-and-down motion operation of the polish rod is achieved, and the effect of protecting a sealing component is further achieved; the spring bushing 19 and the spring 18 are arranged between the upper ball sealing box 14 and the lower ball sealing box 24, so that the upper packing 15 in the upper ball sealing box 14 is continuously paved to maintain the expanding force, and meanwhile, the lower packing 25 in the lower ball sealing box 24 is continuously paved to maintain the expanding force, so that the sealing effect can be effectively realized for a long time; in addition, the replacement period is reduced, the downtime of the pumping unit can be greatly reduced, the use cost of the polish rod sealer, the polish rod and the material replacement originally used by the wellhead is reduced, the ground environment pollution of the wellhead is reduced, and the labor intensity of workers is also reduced.
The embodiment 2 of the utility model relates to a strong magnetic multistage polish rod sealing device of an oil pumping unit, which comprises a deviation adjusting seat 27, a deviation adjusting cap 28, a rotary handle 29 and a clamp head 31, wherein the deviation adjusting seat 27 is fixedly arranged at the upper end of the clamp head 31 through the deviation adjusting cap 28, the rotary handle 29 is arranged at the outer side of the deviation adjusting cap 28, a ball seat 22 is arranged above the deviation adjusting seat 27, a lower ball sealing box 24 is arranged in the inner cavity of the deviation adjusting seat 27, and a lower packing 25 and a lower gasket 26 are filled in the lower ball sealing box 24; an upper ball sealing box 14 is arranged above the lower ball sealing box 24, the lower part of the upper ball sealing box 14 is fixed outside the deviation adjusting seat 27 through an upper ball pressing cap 17, an upper packing 15 and an upper gasket 16 are arranged in the upper ball sealing box 14, and Huang Youqiang is arranged above the upper packing 15; the upper sphere sealing box 14 is provided with a strong magnetic box 7 and a strong magnetic box gland 5 above, a strong magnet 10 is arranged in the strong magnetic box 7, a nylon bushing 9 is arranged in the strong magnet 10, the upper part of the strong magnetic box 7 is provided with an air bag box 4, the top of the air bag box 4 is provided with an air bag cavity gland 1, and an air bag 3 is arranged in the inner cavity of the air bag box 4.
The difference from example 1 is that:
Referring to fig. 7, a slot type slider 6 is provided in a ferromagnetic body 10 according to the present utility model, and a nylon bushing 9 is installed inside the slot type slider 6, which enables the slot type slider 6 to move in a ferromagnetic case 7.
Embodiment 3, the utility model relates to a strong magnetic multistage polish rod sealing device of an oil pumping unit, which comprises a deviation adjusting seat 27, a deviation adjusting cap 28, a rotary handle 29 and a clamp head 31, wherein the deviation adjusting seat 27 is fixedly arranged at the upper end of the clamp head 31 through the deviation adjusting cap 28, the rotary handle 29 is arranged at the outer side of the deviation adjusting cap 28, a ball seat 22 is arranged above the deviation adjusting seat 27, a lower ball sealing box 24 is arranged in the inner cavity of the deviation adjusting seat 27, and a lower packing 25 and a lower gasket 26 are filled in the lower ball sealing box 24; an upper ball sealing box 14 is arranged above the lower ball sealing box 24, the lower part of the upper ball sealing box 14 is fixed outside the deviation adjusting seat 27 through an upper ball pressing cap 17, an upper packing 15 and an upper gasket 16 are arranged in the upper ball sealing box 14, and Huang Youqiang is arranged above the upper packing 15; the upper sphere sealing box 14 is provided with a strong magnetic box 7 and a strong magnetic box gland 5 above, a strong magnet 10 is arranged in the strong magnetic box 7, a nylon bushing 9 is arranged in the strong magnet 10, the upper part of the strong magnetic box 7 is provided with an air bag box 4, the top of the air bag box 4 is provided with an air bag cavity gland 1, and an air bag 3 is arranged in the inner cavity of the air bag box 4.
The difference from example 2 is that:
Referring to fig. 6, the air bag 3 of the present utility model comprises an air bag main body 3.1, an inflatable cavity 3.2, a spiral packing 3.3 and an outer protective sleeve 3.4, wherein the air bag main body 3.1 is of an annular structure, the outer protective sleeve 3.4 is arranged on the outer side of the air bag main body 3.1, more than one group of inflatable cavities 3.2 are arranged in the air bag main body 3.1, the service life is prolonged, one air bag main body still works under the condition of abrasion, and the sealing performance is improved.
The above description is of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model with the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.
Claims (7)
1. The utility model provides a multistage polished rod sealing device of beam-pumping unit strong magnetism, includes tuningout seat (27), tuningout cap (28), twist grip (29), clamp head (31), passes through tuningout cap (28) fixed mounting tuningout seat (27) in the upper end of clamp head (31), installs twist grip (29), characterized by in the outside of tuningout cap (28): a ball seat (22) is arranged above the deviation adjusting seat (27), a lower ball sealing box (24) is arranged in the inner cavity of the deviation adjusting seat (27), and a lower packing (25) and a lower gasket (26) are filled in the lower ball sealing box (24); an upper ball sealing box (14) is arranged above the lower ball sealing box (24), the lower part of the upper ball sealing box (14) is fixed outside the deflection adjusting seat (27) through an upper ball pressing cap (17), an upper packing (15) and an upper gasket (16) are arranged in the upper ball sealing box (14), and Huang Youqiang (12) are arranged above the upper packing (15); the upper ball body sealing box (14) above install strong magnetic box (7) and strong magnetic box gland (5), install strong magnet (10) in strong magnetic box (7), install nylon bush (9) in strong magnet (10), install gasbag box (4) in the upper portion of strong magnetic box (7), the top of gasbag box (4) is equipped with gasbag chamber gland (1), install gasbag (3) at the inner chamber of gasbag box (4).
2. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 1, characterized in that: the lower part of the upper sphere sealing box (14) is of a hemispherical structure, the upper part of the lower sphere sealing box (24) is of a hemispherical structure, and the upper sphere sealing box and the lower sphere sealing box are in contact and matched to form a spherical structure and are sealed through a first sealing rubber ring (20).
3. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 2, characterized in that: a spring (18) and a spring bushing (19) are arranged in an annulus between an upper gasket (16) of an upper ball seal box (14) and a lower gasket (26) of a lower ball seal box (24), and the spring (18) is positioned in an inner cavity of the spring bushing (19).
4. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 3, characterized in that: the upper end of the ball seat (22) is provided with a hemispherical groove, and the hemispherical structure at the upper part of the lower spherical sealing box (24) is in matched contact with the hemispherical groove.
5. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 4, characterized in that: the air bag (3) comprises an air bag main body (3.1), an air inflation cavity (3.2) and a spiral packing (3.3), wherein the air bag main body (3.1) is of an annular structure, more than one group of air inflation cavities (3.2) are arranged in the air bag main body (3.1), more than one group of spiral packing (3.3) are arranged in the inner ring of the air bag main body (3.1), and the spiral packing (3.3) is of an annular structure.
6. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 5, characterized in that: the strong magnet (10) is internally provided with a groove type sliding block (6), and a nylon bushing (9) is arranged at the inner side of the groove type sliding block (6).
7. The strong magnetic multistage polish rod sealing device of pumping unit according to claim 5 or 6, characterized in that: the upper ball sealing box (14) is characterized in that a partition plate (14.2) is arranged at the middle upper part of the inner cavity of the upper ball sealing box (14), a plurality of groups of packing inverted teeth (14.1) are arranged below the partition plate (14.2), a butter cavity (12) is arranged above the partition plate (14.2), a butter nozzle (13) is arranged on the outer wall of the butter cavity, and a first gasket (11) is arranged at the top of the upper ball sealing box (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420669169.5U CN220955517U (en) | 2024-04-02 | 2024-04-02 | Strong magnetic multistage polish rod sealing device for oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420669169.5U CN220955517U (en) | 2024-04-02 | 2024-04-02 | Strong magnetic multistage polish rod sealing device for oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955517U true CN220955517U (en) | 2024-05-14 |
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ID=90980087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420669169.5U Active CN220955517U (en) | 2024-04-02 | 2024-04-02 | Strong magnetic multistage polish rod sealing device for oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955517U (en) |
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- 2024-04-02 CN CN202420669169.5U patent/CN220955517U/en active Active
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