CN220849991U

CN220849991U - Plunger pump sealing device

Info

Publication number: CN220849991U
Application number: CN202322790660.1U
Authority: CN
Inventors: 郑磊; 沈奎
Original assignee: Shanghai Kehao Shangding Energy Equipment Technology Co ltd
Current assignee: Shanghai Kehao Shangding Energy Equipment Technology Co ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-04-26
Anticipated expiration: 2033-10-18

Abstract

The utility model provides a plunger pump sealing device which comprises a top cover, wherein a base is fixed at the bottom of the top cover, a pressing cylinder is fixed on the inner wall of the top cover, the pressing cylinder slides along the inner wall of the base, plunger bodies are inserted into the top cover, the pressing cylinder and the base, packing is sleeved on the surface of the plunger bodies, the bottom of the pressing cylinder is in extrusion contact with the packing, after oil delivery is completed, a pull ring can be sleeved on the plug to limit a connecting rope, so that the connecting rope is prevented from being excessively wound into the pressing cylinder.

Description

Plunger pump sealing device

Technical Field

The utility model relates to the technical field of plunger pump sealing, in particular to a plunger pump sealing device.

Background

The sealing function of various types of plunger pumps in the oilfield water injection system has similar working principles. The working principle is as follows: the packing gland is rotated to squeeze the copper pressing sleeve, the copper pressing sleeve presses the packing, and the packing is longitudinally squeezed so as to transversely expand and then seal the annular space between the plunger and the sealing box.

The patent CN212656963U proposes a plunger pump sealing device, set up the through-hole that pours into lubricating oil and use on packing gland and copper pressure cover, copper pressure cover is inside and outside to set up the recess, screw fixation through passing the through-hole at packing gland and copper pressure cover has realized taking down the screw of upper portion at any time and in time annotating lubricating oil as the oil filler point, the disc pump can make the plunger surface have lubricating oil and alleviate corrosion, after having oil on the contact surface of plunger and packing simultaneously, the dry grinding phenomenon when making the pump obtains alleviateing, alleviate frictional resistance, reduce starting moment, reduce starting current.

The defects of the scheme are as follows: in the scheme technology, lubricating oil is fed into the pressure cylinder through the oil filling hole and the outer groove, but when the lubricating oil is fed out, the lubricating oil is directly conveyed onto the packing, so that the packing close to one side of the oil filling hole is faster and more, the packing is received at the farthest position, the lubricating oil is slower and some places are easy to be unable to be lubricated, and therefore the whole uniform lubricating effect of the packing cannot be realized.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model aims to provide the plunger pump sealing device, so as to solve the problems in the background art.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a plunger pump sealing device, includes the top cap, the top cap bottom is fixed with the base, and top cap top inner wall is fixed with presses the section of thick bamboo, press section of thick bamboo to slide along the base inner wall, peg graft in top cap, pressure section of thick bamboo and the base has plunger body, and plunger body is located the packing that has cup jointed on the surface of base, press section of thick bamboo bottom and packing extrusion contact, press section of thick bamboo to rotate through the bearing on being close to the inner wall of bottom and install the oil delivery plate, and four oilholes have been seted up to the oil delivery plate equidistance on the surface, oil delivery plate top is fixed with the rotating turret, and the rotating turret top is connected through pivot and torsion spring rotation with pressure section of thick bamboo top inner wall.

Further, a sealing groove is formed in one side of the top cover, and an oil filling port in the same position is formed in the sealing groove and the pressing cylinder.

Further, screw holes are formed in two sides of the sealing groove, the outer surface of the sealing groove is covered with a sealing plate, bolts are inserted into positions, corresponding to the screw holes, of two sides of the sealing plate in a meshed mode, and the sealing plate is locked with the sealing groove through the bolts and the screw holes.

Further, the connecting rope is wound on the surface of the top of the rotating frame, one end of the connecting rope is fixed with the rotating frame, the threading hole is formed in the position, corresponding to the other end of the connecting rope, of the sealing groove, and the other end of the connecting rope penetrates out of the threading hole.

Further, one end of the connecting rope penetrating out of the threading hole is fixed with a pull ring.

Further, the sealing groove is fixed with the inserted column at the bottom of the threading hole, and the pull ring can be sleeved on the inserted column.

Further, a retainer ring is fixed on the oil delivery plate close to the inner ring of the plunger body, and the other side of the retainer ring inclines to the plunger body.

The utility model has the beneficial effects that: the utility model relates to a plunger pump sealing device, which comprises a top cover; sealing grooves; a sealing plate; an oil filling port; a threading hole; inserting a column; a pull ring; a bolt; a screw hole; a plunger body; a base; pressing a cylinder; an oil feeding plate; a rotating frame; a connecting rope; an oil hole; a retainer ring; packing;

1. the retainer ring is in a round table shape and is not in contact with the plunger body, so that the space between the oil delivery plate and the plunger body is blocked as much as possible, and the phenomenon that scraps generated by outflow of lubricating oil and friction of packing enter the upper end of the oil delivery plate to block the oil hole is avoided.

2. After the oil delivery is completed, the pull ring can be sleeved on the plug to limit the connecting rope, so that the connecting rope is prevented from being excessively wound into the pressing cylinder.

3. After the pull ring is loosened, the connecting rope is rapidly wound under the action of the torsion spring at the top of the rotating frame, and the rotating frame and the oil delivery plate are reciprocally rotated, so that the delivery point position of lubricating oil is improved, and the lubricating oil is more uniformly and rapidly distributed.

4. The sealing groove is spliced on the screw hole through the sealing plate by using the bolt for locking, and lubricating oil can be added into the pressure cylinder through the oil filling port when the sealing groove is opened.

5. Compared with the prior art, when the lubricating oil is added, the manual pulling rope is loosened again, the rotating frame rotates back and forth, the oil feeding plate at the bottom is driven to rotate back and forth along the inner wall of the pressing cylinder, the lubricating oil in the pressing cylinder is uniformly sprayed on the packing through the oil hole, the problem that the efficiency of receiving the lubricating oil by the far packing is low due to concentration in one area is avoided, and the use of the plunger pump is better protected.

Drawings

FIG. 1 is a schematic view of the overall structure of a plunger pump sealing device according to the present utility model;

FIG. 2 is a schematic view of the overall internal structure of a plunger pump sealing device according to the present utility model;

FIG. 3 is a schematic view of a top cover structure of a plunger pump sealing device according to the present utility model;

fig. 4 is a schematic diagram of an oil feeding plate structure of a plunger pump sealing device according to the present utility model.

In the figure: 1. a top cover; 11. sealing grooves; 12. a sealing plate; 13. an oil filling port; 14. a threading hole; 15. inserting a column; 16. a pull ring; 17. a bolt; 18. a screw hole; 2. a plunger body; 3. a base; 4. pressing a cylinder; 41. an oil feeding plate; 42. a rotating frame; 43. a connecting rope; 44. an oil hole; 45. a retainer ring; 5. and (3) packing.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a plunger pump sealing device, includes top cap 1, top cap 1 bottom is fixed with base 3, and top cap 1 top inner wall is fixed with presses section of thick bamboo 4, press section of thick bamboo 4 to slide along base 3 inner wall, peg graft in top cap 1, press section of thick bamboo 4 and the base 3 has plunger body 2, and plunger body 2 is located base 3's on the surface and cup jointed packing 5, press section of thick bamboo 4 bottom and packing 5 extrusion contact, press section of thick bamboo 4 to be close to on the inner wall of bottom through the bearing rotation install oil feeding plate 41, and oil feeding plate 41 equidistance has been offered four oilholes 44 on the surface, oil feeding plate 41 top is fixed with rotating frame 42, and rotating frame 42 top and press section of thick bamboo 4 top inner wall through pivot and torsion spring rotation connection, during the use device, packing 5 keeps the leakproofness of plunger body 2 under the extrusion effect of pressing section of thick bamboo 4, when needs lubrication, to press section of thick bamboo 4 inside input lubricating oil to by oil feeding plate 41 and rotating frame 42, evenly carry lubricating oil to packing 5, improve lubrication efficiency and lubrication uniformity.

In this embodiment, the sealing groove 11 is provided on one side of the top cover 1, the sealing groove 11 and the pressing cylinder 4 are provided with the oil filling port 13 at the same position, the two sides of the sealing groove 11 are provided with the screw holes 18, the outer surface of the sealing groove 11 is covered with the sealing plate 12, the two sides of the sealing plate 12 are engaged and inserted with the bolts 17 corresponding to the positions of the screw holes 18, the sealing plate 12 and the sealing groove 11 are locked through the bolts 17 and the screw holes 18, the sealing groove 11 is inserted and locked on the screw holes 18 through the sealing plate 12, and lubricating oil can be added into the pressing cylinder 4 through the oil filling port 13 when the sealing plate is opened.

In this embodiment, the connecting rope 43 is wound on the top surface of the rotating frame 42, one end of the connecting rope 43 is fixed with the rotating frame 42, the threading hole 14 is formed in the position, corresponding to the other end of the connecting rope 43, of the sealing groove 11, the other end of the connecting rope 43 penetrates out of the threading hole 14, one end, penetrating out of the threading hole 14, of the connecting rope 43 is fixed with the pull ring 16, the pull ring 16 is manually pulled to drive the connecting rope 43 to be sent out along the threading hole 14, at this time, the other end of the connecting rope 43 drives the rotating frame 42 and the oil feeding plate 41 to rotate, after the pull ring 16 is released, the connecting rope 43 is rapidly wound under the action of the torsion spring at the top of the rotating frame 42, and the rotating frame 42 and the oil feeding plate 41 are reciprocally rotated, so that the delivery point of lubricating oil is improved, and the distribution of lubricating oil is more uniform and rapid.

In this embodiment, the sealing groove 11 is located at the bottom of the threading hole 14 and is fixed with the plunger 15, the pull ring 16 may be sleeved on the plunger 15, and after oil delivery is completed, the pull ring 16 may be sleeved on the plunger 15 to limit the connection rope 43, so as to prevent the connection rope 43 from being excessively wound into the pressing cylinder 4.

In this embodiment, the retainer ring 45 is fixed to the inner ring of the oil delivery plate 41 near the plunger body 2, and the retainer ring 45 is inclined toward the plunger body 2 from the other side, and the retainer ring 45 is in a truncated cone shape, and is not in contact with the plunger body 2, so that the space between the oil delivery plate 41 and the plunger body 2 is blocked as much as possible, and the oil hole 44 is prevented from being blocked by the debris generated by the outflow of the lubricating oil and the friction of the packing 5 entering the upper end of the oil delivery plate 41.

When the device is used, the packing 5 keeps the tightness of the plunger body 2 under the extrusion action of the pressing cylinder 4, when lubrication is needed, lubricating oil is added into the pressing cylinder 4 through the oil filling port 13, the pull ring 16 is manually pulled to drive the connecting rope 43 to be sent out along the threading hole 14, at the moment, the other end of the connecting rope 43 drives the rotating frame 42 and the oil delivery plate 41 to rotate, after the pull ring 16 is loosened, the connecting rope 43 is rapidly wound under the action of the torsion spring at the top of the rotating frame 42, the rotating frame 42 and the oil delivery plate 41 are subjected to reciprocating rotation, the delivery point position of the lubricating oil is further improved, the distribution of the lubricating oil is more uniform and rapid, after the oil delivery is completed, the pull ring 16 can be sleeved on the inserting column 15 to limit the connecting rope 43, and the connecting rope 43 is prevented from being excessively wound into the pressing cylinder 4.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a plunger pump sealing device, includes top cap (1), its characterized in that: the novel oil feeding device is characterized in that a base (3) is fixed at the bottom of the top cover (1), a pressing cylinder (4) is fixed on the inner wall of the top cover (1), the pressing cylinder (4) slides along the inner wall of the base (3), a plunger body (2) is inserted in the top cover (1), the pressing cylinder (4) and the base (3), a packing (5) is sleeved on the surface of the plunger body (2) which is located on the base (3), the bottom of the pressing cylinder (4) is in extrusion contact with the packing (5), an oil feeding plate (41) is rotatably mounted on the inner wall of the bottom of the pressing cylinder (4) through a bearing, four oil holes (44) are formed in the surface of the oil feeding plate (41) at equal intervals, a rotating frame (42) is fixed on the top of the oil feeding plate (41), and the top of the rotating frame (42) is rotatably connected with the inner wall of the top of the pressing cylinder (4) through a rotating shaft and a torsion spring.

2. A plunger pump sealing arrangement as set forth in claim 1, wherein: a sealing groove (11) is formed in one side of the top cover (1), and an oil filling port (13) in the same position is formed in the sealing groove (11) and the pressure cylinder (4).

3. A plunger pump sealing arrangement as set forth in claim 2, wherein: screw holes (18) are formed in two sides of the sealing groove (11), the outer surface of the sealing groove (11) is covered with a sealing plate (12), bolts (17) are inserted into two sides of the sealing plate (12) corresponding to the positions of the screw holes (18) in a meshed mode, and the sealing plate (12) and the sealing groove (11) are locked through the bolts (17) and the screw holes (18).

4. A plunger pump sealing arrangement as set forth in claim 3, wherein: the connecting rope (43) is wound on the top surface of the rotating frame (42), one end of the connecting rope (43) is fixed with the rotating frame (42), the threading hole (14) is formed in the position, corresponding to the other end of the connecting rope (43), of the sealing groove (11), and the other end of the connecting rope (43) penetrates out of the threading hole (14).

5. The plunger pump sealing device of claim 4, wherein: one end of the connecting rope (43) penetrating out of the threading hole (14) is fixed with a pull ring (16).

6. The plunger pump sealing device of claim 5, wherein: the sealing groove (11) is positioned at the bottom of the threading hole (14) and is fixedly provided with a plug post (15), and the pull ring (16) can be sleeved on the plug post (15).

7. A plunger pump sealing arrangement as set forth in claim 1, wherein: a check ring (45) is fixed on the inner ring of the oil delivery plate (41) close to the plunger body (2), and the other side of the check ring (45) inclines towards the plunger body (2).