CN212406610U

CN212406610U - Polished rod self-lubricating device

Info

Publication number: CN212406610U
Application number: CN202021166705.8U
Authority: CN
Inventors: 周佩勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-01-26
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a polished rod self-lubricating device, which comprises an upper pressing cap, a body, a lower pressing cap, a packing, a plastic packing seat and an oiling mechanism; a plastic packing seat is fixedly attached to the lower inner part of the upper pressing cap, and a packing is arranged in a gap between the upper pressing cap and the inner wall of the plastic packing seat; a polish rod is arranged in the packing in a fit sliding manner, and a body is fixed at the bottom of a plastic packing seat positioned below the packing; the lower part of the body is fixed on the lower pressing cap; the polish rod sequentially fits and slides through the lower pressing cap and the packing, and the polish rod penetrates through the body; one side of the body is provided with an oil hole for filling grease into a gap between the body and the polish rod; the oilhole communicates with each other with the oiling mechanism that is used for carrying out the oiling to this internal. This polished rod self-lubricating device makes the lubricating ability improve through setting up body etc. and the polished rod that significantly reduces just has certain polished rod righting ability to the wearing and tearing of packing, has reduced the polished rod and has prolonged greatly packing life to the eccentric wear of lower part well fluid seal packing.

Description

Polished rod self-lubricating device

Technical Field

The utility model relates to a lubricating arrangement specifically is a polished rod self-lubricating arrangement.

Background

Greening production is an important target of current production, and running, leakage and dripping of an oil well are relatively difficult problems, and the treatment of oil stains on the ground is very troublesome. In addition, because the polished rod bears the influence of alternating load, the up-down stroke of the polished rod is not stable, the packing is unevenly worn, and the packing fails early.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a polished rod self-lubricating device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a polished rod self-lubricating device comprises an upper pressing cap, a body, a lower pressing cap, a packing, a plastic packing seat and an oiling mechanism; a plastic packing seat is fixedly attached to the lower inner part of the upper pressing cap, and a plurality of packing are arranged in a gap between the upper pressing cap and the inner wall of the plastic packing seat; a polished rod is arranged in the packing in a fit sliding manner, and a body is fixed at the bottom of a plastic packing seat positioned below the packing; the lower part of the body is fixed on the lower pressing cap; the lower pressing cap is fixed on the connecting cap, and the connecting cap is fixed on the original well packing box; a polished rod is arranged on the original well packing box in a fit and sliding manner, the polished rod sequentially fits and slides to penetrate through the lower pressing cap and the packing, and the polished rod penetrates through the body; one side of the body is provided with an oil hole for filling grease into a gap between the body and the polish rod; the oil hole is communicated with an oil injection mechanism for injecting oil into the body; an engineering plastic washer is arranged between the upper pressing cap and the packing.

As a further aspect of the present invention: the oil injection mechanism comprises an oil pipe and a weighted oil ruler; the oil pipe comprises an oil storage tank and an oil filling pipeline; the oil hole is communicated with the oil storage tank through an oil feeding pipeline, and butter is stored in the oil storage tank; the weighted oil dipstick used for pressing down the butter stored in the oil storage tank comprises a weighting block and a limiting snap ring; the weighting block is arranged in the oil storage tank in a fitting and sliding manner, and the size of the weighting block is the same as the inner size of the oil storage tank; the outside of weight is equipped with the spacing snap ring of being convenient for with weight and batch oil tank separation.

As a further aspect of the present invention: one side of the lower pressing cap is also provided with a water drainage hole which is convenient for draining accumulated water in a gap between the body and the polish rod; the water discharge hole is detachably sealed through the matching of the screw thread and the screw rod.

As a further aspect of the present invention: one side of the lower pressing cap is also provided with a grease nipple which is convenient for filling grease into a gap between the body and the polish rod; the grease nozzle and the water discharge hole are positioned at the same height; the grease nipple is also detachably sealed through the matching of the screw threads and the screw rod.

As a further aspect of the present invention: the number of the packing sets is two, and the inner diameters of the packing sets are 28mm and 32mm respectively; the weight of the weighted dipstick is 1.2 kg.

Compared with the prior art, the beneficial effects of the utility model are that: by arranging the body and the like, the lubricating capability is improved, the abrasion of the polish rod to the packing is greatly reduced, a certain polish rod centralizing capability is realized, the eccentric wear of the polish rod to the lower well liquid seal packing is reduced, and the service life of the packing is greatly prolonged; the tool is a section of metal round pipe, and a packing seat made of engineering plastic is arranged in the metal round pipe, so that the plastic packing seat cannot cause abrasion to a polished rod.

Drawings

Fig. 1 is a schematic structural diagram of a polish rod self-lubricating device matched with a polish rod.

Fig. 2 is a schematic structural diagram of the polish rod self-lubricating device.

Fig. 3 is a schematic structural diagram of an oil injection mechanism in the polished rod self-lubricating device.

In the figure: 1-upper pressure cap, 2-body, 3-lower pressure cap, 4-packing, 5-plastic packing seat, 7-oil hole, 8-oil pipe, 81-oil storage tank, 82-oil feeding pipeline, 9-weighted oil ruler, 91-weighted block, 92-limit snap ring, 10-polish rod, 11-hanger, 12-connecting cap, 13-original well packing box and 14-water discharging hole.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

Referring to fig. 1-3, the embodiment provides a polish rod self-lubricating device, which includes an upper pressing cap 1, a body 2, a lower pressing cap 3, a packing 4, a plastic packing seat 5 and an oil injection mechanism; a plastic packing seat 5 is fixedly attached to the lower inner part of the upper pressing cap 1, and a plurality of packing 4 are arranged in a gap between the upper pressing cap 1 and the inner wall of the plastic packing seat 5; a polish rod 10 is arranged in the packing 4 in a fitting and sliding manner, and a body 2 is fixed at the bottom of a plastic packing seat 5 positioned below the packing 4; the lower part of the body 2 is fixed on the lower pressing cap 3; the lower pressing cap 3 is fixed on the connecting cap 12, and the connecting cap 12 is fixed on the original well packing box 13; a polished rod 10 is arranged on the original well packing box 13 in a fit and sliding manner, the polished rod 10 sequentially passes through the lower pressing cap 3 and the packing 4 in a fit and sliding manner, and the polished rod 10 passes through the body 2; an oil hole 7 for filling grease into a gap between the body 2 and the polish rod 10 is formed in one side of the body 2; the oil hole 7 is communicated with an oil injection mechanism for injecting oil into the body 2.

An engineering plastic washer is arranged between the upper pressing cap 1 and the packing 4; set up like this, oiling mechanism passes through oilhole 7 to body 2 and polish rod 10 between the space filling butter, because polish rod 10 is that the laminating slip passes down and presses cap 3 and packing 4, packing in the packing box this moment is rightd by the good lubrication of butter and by packing 4, job stabilization, therefore packing life in the packing box prolongs greatly.

The oiling mechanism comprises an oil pipe 8 and a weighted oil ruler 9; the oil pipe 8 comprises an oil storage tank 81 and an oil filling pipe 82; the oil hole 7 is communicated with an oil storage tank 81 through an oil feeding pipeline 82, and butter is stored in the oil storage tank 81; the weighted oil dipstick 9 for pressing down the grease stored in the oil storage tank 81 comprises a weighting block 91 and a limit snap ring 92; the weight 91 is arranged in the oil storage tank 81 in an attaching and sliding manner, and the size of the weight is the same as the inner size of the oil storage tank 81; a limiting clamp ring 92 convenient for separating the weight 91 from the oil storage tank 81 is arranged on the outer side of the weight 91; with this arrangement, a certain pressure can be applied to the grease stored in the oil reservoir 81 under the self weight of the weight 91, so that the grease in the oil reservoir 81 flows into the gap between the body 2 and the polish rod 10 through the grease supply passage 82 and the oil hole 7, and the gap between the body 2 and the polish rod 10 is always filled with the grease.

Because the device is placed outdoors, when raining outside, rainwater can flow into the gap between the body 2 and the polish rod 10 along the polish rod 10, in order to discharge accumulated water in the gap between the body 2 and the polish rod 10, a water discharge hole 14 which is convenient for discharging accumulated water in the gap between the body 2 and the polish rod 10 is further arranged on one side of the lower pressure cap 3; the water discharge hole 14 is detachably sealed through the matching of a screw thread and a screw rod.

When the device is used, one side of the lower pressing cap 3 is also provided with a grease nipple which is convenient for filling grease into a gap between the body 2 and the polish rod 10; the grease nozzle and the water discharge hole 14 are positioned at the same height; the grease nipple is also detachably sealed through the matching of the screw threads and the screw rod. With the arrangement, when the grease is injected into the cavity of the body 2 through the grease nipple, the grease fills the cavity of the body 2 and enters the oil storage tank 81 through the oil hole 7 and the grease feeding pipeline 82, so that the weighted oil dipstick 9 is jacked up.

The working principle of the embodiment is as follows: can exert certain pressure to the butter that stores in the oil storage tank 81 under the circumstances of the dead weight of weight 91 to make the butter in the oil storage tank 81 flow to the space between body 2 and polished rod 10 in through oiling pipeline 82 and oilhole 7, it makes the space between body 2 and polished rod 10 be full of the butter all the time, because polished rod 10 is that the laminating slides and passes down pressure cap 3 and packing 4, the surface of polished rod 10 is lubricated this moment, and can not take excessive butter out, and stable in the up-and-down stroke of polished rod this moment, packing 4 atress is even, packing 4's life obtains the extension. When the grease is injected into the cavity of the body 2 through the grease nipple, the grease fills the cavity of the body 2 and enters the oil storage tank 81 through the oil hole 7 and the grease feeding pipeline 82, so that the weighted oil dipstick 9 is jacked up.

Example 2

The embodiment is further improved on the basis of the embodiment 1, and the improvement is as follows: the size of the packing 4 is not limited, in this embodiment, preferably, there are two kinds of packing, and the inner diameters are 28mm and 32mm respectively; the weight of the weighted dipstick 9 is not limited, and in the present embodiment, the weight of the weighted dipstick 9 is preferably 1.2 kg.

In the instrument was arranged in to the mode of plastics packing seat 5 with the body inside lining, the material used engineering plastics as being good, prevented to dredge again after packing 4 damages in changing, prevented that polished rod 2 from being worn and torn by plastics packing seat 5, causing the hard injury.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Claims

1. A polished rod self-lubricating device is characterized by comprising an upper pressing cap (1), a body (2), a lower pressing cap (3), a packing (4), a plastic packing seat (5) and an oiling mechanism; a plastic packing seat (5) is fixedly attached to the lower inner part of the upper pressing cap (1), and a plurality of packing (4) are arranged in a gap between the upper pressing cap (1) and the inner wall of the plastic packing seat (5); a polished rod (10) is arranged on the inner wall of the packing (4) in a fitting and sliding manner, and a body (2) is fixed at the bottom of a plastic packing seat (5) positioned below the packing (4); the lower part of the body (2) is fixed on the lower pressing cap (3); the lower pressing cap (3) is fixed on the connecting cap (12), and the connecting cap (12) is fixed on the original well packing box (13); a polished rod (10) is arranged on the original well packing box (13) in a fit and sliding mode, the polished rod (10) sequentially fits and slides to penetrate through the lower pressing cap (3) and the packing (4), and the polished rod (10) penetrates through the body (2); one side of the body (2) is provided with an oil hole (7) for filling grease into a gap between the body (2) and the polish rod (10); the oil hole (7) is communicated with an oil injection mechanism for injecting oil into the body (2); an engineering plastic washer is arranged between the upper pressing cap (1) and the packing (4).

2. The polish rod self-lubricating apparatus according to claim 1, wherein the oil injection mechanism comprises an oil pipe (8) and a weighted dipstick (9); the oil pipe (8) comprises an oil storage tank (81) and an oil filling pipeline (82); the oil hole (7) is communicated with an oil storage tank (81) through an oil feeding pipeline (82), and butter is stored in the oil storage tank (81); the weighted oil dipstick (9) used for pressing down the grease stored in the oil storage tank (81) comprises a weighted block (91) and a limiting snap ring (92); the weighting block (91) is arranged in the oil storage tank (81) in a fitting and sliding mode, and the size of the weighting block is the same as the inner size of the oil storage tank (81); and a limiting clamping ring (92) convenient for separating the weighting block (91) from the oil storage tank (81) is arranged on the outer side of the weighting block (91).

3. The polish rod self-lubricating device according to claim 2, wherein a water drainage hole (14) for draining accumulated water in a gap between the body (2) and the polish rod (10) is further formed on one side of the lower pressing cap (3); the water discharge hole (14) is detachably sealed through the matching of a screw thread and a screw rod.

4. The polish rod self-lubricating device according to claim 3, wherein one side of the lower pressing cap (3) is further provided with a grease nipple for filling a gap between the body (2) and the polish rod (10) with grease; the grease nozzle and the water discharge hole (14) are positioned at the same height; the grease nipple is also detachably sealed through the matching of the screw threads and the screw rod.

5. The polish rod self-lubricating device according to claim 2, characterized in that the packing sets (4) are of two kinds and have inner diameters of 28mm and 32mm, respectively; the weight of the weighted oil dipstick (9) is 1.2 kg.