CN211439805U - Valve seat detaching tool - Google Patents

Abstract

The utility model discloses a disk seat extracting tool belongs to plunger pump maintenance technical field. The method comprises the following steps: guide rod, ram and clamping structure. The one end of guide arm has spacing portion, the movably cup joint of ram is on the guide arm, press from both sides tight structure and be located the other end of guide arm, press from both sides tight structure and include first jack catch, second jack catch and connecting rod, the middle part of connecting rod is connected with the other end of guide arm, and connecting rod and guide arm mutually perpendicular, the one end of first jack catch is articulated with the one end of connecting rod, the one end of second jack catch is articulated with the other end of connecting rod, the articulated axis of first jack catch and the articulated axis of second jack catch all are perpendicular with the plane that connecting rod and guide arm were located. This disk seat extracting tool can once only take out the disk seat and with spare parts such as disk seat fixed connection's spring holder, valve block in the hydraulic end pump head of plunger pump together, need not to dismantle respectively, has improved the dismantlement efficiency of disk seat.

Description

Valve seat detaching tool

Technical Field

The utility model relates to a plunger pump maintenance technical field, in particular to disk seat extracting tool.

Background

In the oil field water injection development oil extraction process, a plunger pump is often adopted to pressurize injected water so as to complete water injection indexes. The pump head of the plunger pump is provided with a valve seat, a valve plate, a spring seat and other main components. The spring is sleeved on the valve plate and located in the spring seat, and the spring seat, the valve plate and the valve seat are coaxially and fixedly connected through bolts. After the plunger pump is operated for a long time, the valve seat, the spring and the valve plate in the pump head are usually worn and broken, and the valve seat needs to be detached from the plunger pump for maintenance and replacement.

The valve seat and the pump head of the plunger pump are small in fit clearance, tight in fit and large in friction force, so that the valve seat of the plunger pump is difficult to take out of the pump head. In the related art, a special valve lifter is usually adopted to firstly remove a spring seat fixedly connected to a valve seat, simultaneously take out a spring sleeved on a valve sheet in the spring seat, remove the valve sheet connected to the valve seat, finally connect the valve lifter with the valve seat through a bolt, and pull out the valve seat from a pump head through the valve lifter.

The pump head inner space of plunger pump is narrow and small, dismantles spring holder, spring, valve block and disk seat in proper order by the pump head and takes out, and the step is loaded down with trivial details, and the staff wastes time and energy at the dismantlement in-process, dismantles inefficiency.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a disk seat extracting tool can improve the dismantlement efficiency of plunger pump disk seat, technical scheme is as follows:

an embodiment of the utility model provides a disk seat extracting tool, include: a guide rod, a ram and a clamping structure,

one end of the guide rod is provided with a limiting part, the ram is movably sleeved on the guide rod, the clamping structure is positioned at the other end of the guide rod,

the clamping structure comprises a first clamping jaw, a second clamping jaw and a connecting rod, the middle of the connecting rod is connected with the other end of the guide rod, the connecting rod is perpendicular to the guide rod, one end of the first clamping jaw is hinged to one end of the connecting rod, one end of the second clamping jaw is hinged to the other end of the connecting rod, and the hinged axis of the first clamping jaw is perpendicular to the plane where the second clamping jaw is located.

Optionally, first jack catch with the second jack catch all is the L type, first jack catch with the second jack catch includes linking arm and joint portion respectively, the one end of linking arm with the connecting rod is articulated, joint portion connects perpendicularly the other end of linking arm, and the joint portion of first jack catch with the joint portion of second jack catch extends in opposite directions.

Optionally, the clamping structure further includes a positioning plate, one end of the positioning plate is rotatably sleeved on the connecting arm of the first clamping jaw, a side of the positioning plate is provided with a limiting groove, and the positioning plate is configured such that, when the connecting arm of the first clamping jaw is parallel to the connecting arm of the second clamping jaw, the limiting groove can be clamped on the connecting arm of the second clamping jaw.

Optionally, the connecting rod is integrally connected with the guide rod or detachably connected with the guide rod.

Optionally, the other end of the guide rod is provided with a mounting hole extending along the radial direction, and the connecting rod is inserted into the mounting hole.

Optionally, the connecting rod is in clearance fit with the mounting hole, and the connecting rod is prism-shaped;

or the connecting rod is in threaded connection with the mounting hole.

Optionally, the ram has tup, hammer handle and the baffle of coaxial coupling, the tup is located the hammer handle is close to the one end of spacing portion, the baffle is located the hammer handle is kept away from the one end of spacing portion, the external diameter of hammer handle is less than the tup with the external diameter of baffle.

Optionally, the limiting part is detachably connected with the guide rod.

Optionally, the valve seat removal tool further comprises a handle, and the handle is integrally connected with the limiting part.

Optionally, the guide rod, the ram and the clamping structure are all steel or cast iron structural members.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

the first clamping jaw and the second clamping jaw in the clamping structure are opened at a certain angle, the clamping device extends into a hydraulic end pump head of the plunger pump through the guide rod, and then the first clamping jaw and the second clamping jaw are folded, so that the first clamping jaw and the second clamping jaw clamp the valve seat. Then, the worker holds the hammer by hand to move back and forth along the axial direction of the guide rod and continuously collides with the limiting part positioned at one end of the guide rod, so that the pulling force of parts such as the valve seat clamped at the other end of the guide rod, the spring seat fixedly connected with the valve seat and the like to the outside of the pump head is continuously given, the valve seat and the pump head are loosened by the pulling force and slowly move outwards, and the valve seat is detached. This disk seat extracting tool can once only take out the disk seat and with spare parts such as disk seat fixed connection's spring holder, valve block in the hydraulic end pump head of plunger pump together, need not to dismantle respectively, has improved the dismantlement efficiency of disk seat.

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 described 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 without creative efforts.

Fig. 1 is a schematic structural diagram of a valve seat removing tool according to an embodiment of the present invention;

fig. 2 is an enlarged schematic structural diagram of a clamping structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a positioning plate according to an embodiment of the present invention;

fig. 4 is a partial schematic structural view of a connection rod and a guide rod according to an embodiment of the present invention;

fig. 5 is a partial structural sectional view of a valve seat removing tool according to an embodiment of the present invention.

Detailed Description

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

Fig. 1 is a schematic structural diagram of a valve seat removing tool according to an embodiment of the present invention. As shown in fig. 1, the valve seat removal tool includes: the guide rod 1, the ram 2 and the clamping structure 3, the ram 2 is movably sleeved on the guide rod 1, one end of the guide rod 1 is provided with a limiting part 11, and the clamping structure 3 is located at the other end of the guide rod 1. Illustratively, in the embodiment of the present invention, the outer diameter of the contact surface of the stopper portion 11 with the hammer 2 is larger than the diameter of the through hole of the hammer 2, so that the hammer 2 can move between the stopper portion 11 and the clamping structure 3.

Fig. 2 is an enlarged schematic structural diagram of a clamping structure according to an embodiment of the present invention. As shown in fig. 1 and 2, the clamping structure 3 includes a first jaw 31, a second jaw 32 and a connecting rod 33, the middle of the connecting rod 33 is connected with the other end of the guide rod 1, the connecting rod 33 is perpendicular to the guide rod 1, one end of the first jaw 31 is hinged with one end of the connecting rod 33, one end of the second jaw 32 is hinged with the other end of the connecting rod 33, and the hinge axis of the first jaw 31 and the hinge axis of the second jaw 32 are both perpendicular to the plane where the connecting rod 33 and the guide rod 1 are located.

The embodiment of the utility model provides an in, be provided with a ram on the guide arm of disk seat extracting tool, the through-hole that the ram set up through the axial cup joints on the guide arm and can come the motion back and forth in the axial of guide arm, and the one end of guide arm is provided with the spacing portion of restriction ram stroke. The other end of guide arm has the clamping structure, the clamping structure includes first jack catch and second jack catch and connects the connecting rod of first jack catch and second jack catch, first jack catch and second jack catch articulate the both ends at the connecting rod through the round pin axle respectively, two jack catches can rotate for the connecting rod through the round pin axle, thereby the adjustment angle that opens and shuts, avoid taking place to interfere with the surface of the passageway inner wall of the fluid end pump head of plunger pump or spring holder, conveniently stretch into in the fluid end pump head of plunger pump. The middle part of the connecting rod is connected with the other end of the guide rod, namely, the first jaw and the second jaw are symmetrically arranged relative to the axis of the guide rod.

In the actual disassembly process, a worker firstly opens the first jaw and the second jaw in the clamping structure for a certain angle, extends the clamping device into a hydraulic end pump head of the plunger pump through the guide rod, and then folds the first jaw and the second jaw to enable the first jaw and the second jaw to clamp the valve seat. Then, the worker holds the hammer by hand to move back and forth along the axial direction of the guide rod and continuously collides with the limiting part positioned at one end of the guide rod, so that the pulling force of parts such as the valve seat clamped at the other end of the guide rod, the spring seat fixedly connected with the valve seat and the like to the outside of the pump head is continuously given, the valve seat and the pump head are loosened by the pulling force and slowly move outwards, and the valve seat is detached. This disk seat extracting tool can once only take out the disk seat and with spare parts such as disk seat fixed connection's spring holder, valve block in the hydraulic end pump head of plunger pump together, need not to dismantle respectively, has improved the dismantlement efficiency of disk seat.

It is required to explain, the embodiment of the utility model provides a disk seat extracting tool makes disk seat and pump head not hard up and mild shift out by the pump head through the striking many times of ram with spacing portion, avoids appearing using great pulling force to extract the disk seat from the pump head in the twinkling of an eye and injures staff's the condition easily. Meanwhile, components such as a valve plate and a spring seat connected to the valve seat do not need to be disassembled, so that the valve seat does not need to be pulled out of the pump head through the bolt connection of the valve lifter or the disassembling tool and the valve seat, the condition that the valve seat is scrapped due to the fact that the bolt is broken in a threaded hole in the valve seat due to misoperation is avoided, and the service life of the valve seat is prolonged.

Optionally, the first jaw 31 and the second jaw 32 are both L-shaped, the first jaw 31 includes a connecting arm 311 and a clamping portion 312, and the second jaw 32 includes a connecting arm 321 and a clamping portion 322. One end of the connecting arm 311 of the first jaw 31 and one end of the connecting arm 321 of the second jaw 32 are hinged to the connecting rod 33, the clamping portion 312 of the first jaw 31 is vertically connected to the other end of the connecting arm 311, and the clamping portion 322 of the second jaw 32 is vertically connected to the other end of the connecting arm 321. The catching portions 312 and 322 of the first and second claws 31 and 32 extend toward each other.

In the actual dismantlement in-process, after pressing from both sides tight structure 3 and stretching into the hydraulic end pump head of plunger pump, the staff folds first jack catch 31 and second jack catch 32, make joint portion 312 on the first jack catch 31 and the joint portion 322 on the second jack catch 32 block respectively in the plunger pump between disk seat and the spring holder assembly gap, the realization is tight to the clamp of disk seat, prevent to produce the phenomenon that the pine takes off because of the collision vibrations of ram 2 with spacing portion 11 at the in-process of dismantling the disk seat first jack catch 31 and second jack catch 32, the assembly stability of disk seat extracting tool has been improved.

Fig. 3 is a schematic structural diagram of a positioning plate according to an embodiment of the present invention. As shown in fig. 3, the clamping structure 3 further includes a positioning plate 34, one end of the positioning plate 34 is rotatably sleeved on the connecting arm 311 of the first jaw 31, one side of the positioning plate 34 has a limiting groove 341, and the positioning plate 34 is configured such that when the connecting arm 311 of the first jaw 31 and the connecting arm 321 of the second jaw 32 are parallel, the limiting groove 341 can be clamped on the connecting arm 321 of the second jaw 32.

Because the embodiment of the utility model provides a valve seat extracting tool need constantly pass through 2 striking spacing portions 11 of ram when dismantling the process to the valve seat, and the produced vibrations of striking probably lead to the first jack catch 31 and the second jack catch 32 pine among the clamping structure 3 to take off. Through setting up locating plate 34, the one end of locating plate 34 is equipped with circular through-hole 342, with locating plate 34 through-hole 342 cover-connect on the connecting arm of one of first jack catch 31 and second jack catch 32, locating plate 34 can rotate on this jack catch. Exemplarily, in the embodiment of the present invention, the positioning plate 34 is sleeved on the connecting arm 311 of the first jaw 31, when the joint portion 312 on the first jaw 31 and the joint portion 322 of the second jaw 32 are clamped into the assembling gap between the valve seat and the spring seat in the plunger pump, the connecting arm 311 of the first jaw 31 and the connecting arm 321 of the second jaw 32 are parallel, at this time, the positioning plate 34 is rotated to the connecting arm 321 of the second jaw 32, so that the limiting groove 341 is clamped on the connecting arm 321 of the second jaw 32, the limiting fixation of the first jaw 31 and the second jaw 32 under the clamping state of the clamping structure 3 to the valve seat is realized, and the first jaw 31 and the second jaw 32 are prevented from being loosened in the process of disassembling the valve seat. The valve seat is clamped repeatedly without workers, and the valve seat dismounting efficiency is further improved.

Alternatively, the connecting rod 33 is integrally connected with the guide bar 1. In the embodiment of the present invention, the integral connection means that the connecting rod 33 and the guide rod 1 in the clamping structure 3 are integrally formed or formed by welding. The connecting rod 33 and the guide rod 1 which are integrally formed are high in overall mechanical strength, and the connecting part of the connecting rod 33 and the guide rod 1 can be effectively prevented from being broken and damaged due to long-time stress caused by vibration generated by repeated impact of the hammer 2 and the limiting part 11.

Alternatively, in other possible implementations, the connecting rod 33 and the guide rod 1 may be detachably connected, the connecting rod 33 and the guide rod 1 are detachably connected, such as by screwing, bolting, etc., and after the worker completes the disassembly of the valve seat, the clamping structure 3 and the guide rod 1 may be disassembled for convenient maintenance and storage. Meanwhile, the connecting rods 33 and the corresponding clamping jaws with different lengths can be designed according to valve seats with different sizes, a worker can use one guide rod 1 to detach the valve seats with different sizes in different modes of the connecting rods 33 and the clamping jaws, and the universality of the valve seat detaching tool is improved.

Fig. 4 is a schematic view of a partial structure of a connection rod and a guide rod according to an embodiment of the present invention. As shown in fig. 4, the other end of the guide rod 1 has a mounting hole 12 communicating in the radial direction, and the connecting rod 33 is inserted into the mounting hole 12. Exemplarily, in the embodiment of the present invention, the mounting hole 12 extends along the radial direction of the guide rod 1, and the connecting rod 33 is detachably connected with the guide rod 1 by plugging.

Optionally, the connecting rod 33 is in clearance fit with the mounting hole 12, and the connecting rod 33 is prism-shaped. Exemplarily, in the embodiment of the present invention, the connecting rod 33 is set to be prismatic, so as to prevent that, in the process of disassembling the valve seat, the connecting rod 33 rotates around the radial direction of the guide rod 1 due to vibration, so as to ensure the fastening connection of the connecting rod 33 inserted in the mounting hole 12, and avoid the clamping structure 3 from deflecting relative to the guide rod 1, thereby affecting the disassembling of the valve seat.

It should be noted that, the connection between the connection rod 33 and the guide rod 1 provided in the embodiment of the present invention and the guide rod 1 through the insertion manner is only an example, and in other possible implementation manners, the connection rod 33 and the guide rod 1 may also be connected through a threaded connection, a snap connection, or the like, and the present application is not limited herein.

Alternatively, referring again to fig. 1, the hammer 2 has a hammer head 21, a hammer shank 22 and a spacer 23 which are coaxially connected, the hammer head 21 is located at one end of the hammer shank 22 close to the stopper portion 11, and the outer diameter of the hammer shank 22 is smaller than that of the hammer head 21. The staff is carrying out the dismantlement in-process of disk seat, need hold the tup 2 and carry out striking repeatedly to spacing portion 11, through setting up the hammer handle 22 that the external diameter is less than tup 21, more laborsaving and conveniently grip. In addition, the hammer head 21 with the larger outer diameter separates the contact surface of the hammer handle 22 and the limiting part 11, so that the hand of a worker can be effectively protected from being clamped by the hammer handle 22 and the limiting part 11 in the impact process, and the safety performance of the valve seat dismounting tool is improved.

Illustratively, the partition plate 23 is located at one end of the hammer shank 22 away from the limiting part 11, and the outer diameter of the hammer shank 22 is smaller than that of the partition plate 23. When a worker uses the hammer 2 to impact the limiting part 11, the hammer 2 can not touch the clamping structure 3 at the other end of the guide rod 1, particularly the connecting rod 33, the contact surface between the hammer 2 and the clamping structure 3 is increased by using the partition plate 23, so that the pressure generated when the hammer 2 contacts the clamping structure 3 is reduced, the clamping structure 3 is protected from being damaged due to the touch of the hammer 2, and the service life of the valve seat dismounting tool is prolonged.

Fig. 5 is a partial structural sectional view of a valve seat removing tool according to an embodiment of the present invention. As shown in fig. 5, the stopper portion 11 is detachably connected to the guide bar 1. For example, in the embodiment of the present invention, the limiting portion 11 is screwed with the guide bar 1, and after a long period of use, the limiting portion 11 may be broken and damaged. Through setting up spacing portion 11 and guide arm 1 to the structure of dismantling the connection, can make things convenient for timely change after spacing portion 11 damages.

It should be noted that the threaded connection provided by the embodiment of the present invention is only an example, and in other possible implementations, the limiting portion 11 and the guide bar 1 may also adopt connection manners such as snap connection, and the present invention is not limited thereto.

Optionally, the valve seat removing tool further comprises a handle 4, and the handle 4 is integrally connected with the limiting part 11. When the staff holds the tup 2 and repeats the striking to spacing portion 11, often also need grip 11 ground one end in spacing portion, guarantee that whole disk seat assembly and disassembly tools is coaxial with the disk seat, through set up handle 4 on spacing portion 11, make things convenient for the staff to grip, the staff is more laborsaving when utilizing disk seat disassembly tools to carry out disk seat ground dismantlement, has further improved the dismantlement efficiency of disk seat.

Exemplarily, in the embodiment of the present invention, the handle 4 extends along the axial direction of the guide rod 1 and is integrally connected with the limiting portion 11, and the integral connection means that the handle 4 and the limiting portion 11 are integrally formed or connected by welding. The handle 4 and the limiting part 11 which are integrally formed are high in overall mechanical strength, and the connecting part of the handle 4 and the limiting part 11 can be effectively prevented from being broken and damaged due to long-time stress caused by vibration generated by repeated impact of the hammer 2 and the limiting part 11.

This arrangement is merely exemplary. In other possible implementation manners, the handle 4 may also be perpendicular to the guide rod 1, or may be disposed at an angle to the guide rod 1, and may be adjusted according to a holding habit of a worker, which is not limited in the present application.

Alternatively, the guide bar 1, the ram 2 and the clamping structure 3 are all steel or cast iron structural members. The steel has high mechanical strength and toughness, and has heat resistance, corrosion resistance and other properties, while cast iron has better casting performance, easier processing and forming and lower cost compared with steel. The embodiment of the utility model provides an among the disclosed disk seat extracting tool, each spare part in guide arm 1, ram 2 and the tight structure 3 of clamp both can be steel structure spare, also can be cast iron structure spare, as long as enable its mechanical strength enough guarantee can not because ram 2 and spacing 11 striking produced vibrations take place to damage, the realization to the disk seat dismantle can, the utility model discloses do not injectd to this.

The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A tool for removing a valve seat of a plunger pump, comprising: a guide rod (1), a ram (2) and a clamping structure (3),

one end of the guide rod (1) is provided with a limiting part (11), the ram (2) is movably sleeved on the guide rod (1), the clamping structure (3) is positioned at the other end of the guide rod (1),

clamping structure (3) include first jack catch (31), second jack catch (32) and connecting rod (33), the middle part of connecting rod (33) with the other end of guide arm (1) is connected, just connecting rod (33) with guide arm (1) mutually perpendicular, the one end of first jack catch (31) with the one end of connecting rod (33) is articulated, the one end of second jack catch (32) with the other end of connecting rod (33) is articulated, the articulated axis of first jack catch (31) with the articulated axis of second jack catch (32) all with connecting rod (33) with the plane at guide arm (1) place is perpendicular.

2. The valve seat removing tool according to claim 1, wherein the first jaw (31) and the second jaw (32) are both L-shaped, the first jaw (31) and the second jaw (32) respectively comprise a connecting arm (311, 321) and a clamping portion (312, 322), one end of the connecting arm (311, 321) is hinged to the connecting rod (33), the clamping portion (312, 322) is vertically connected to the other end of the connecting arm (311, 321), and the clamping portion (312) of the first jaw (31) and the clamping portion (322) of the second jaw (32) extend in opposite directions.

3. The valve seat removal tool according to claim 2, wherein the clamping structure (3) further comprises a positioning plate (34), one end of the positioning plate (34) is rotatably sleeved on the connecting arm (311) of the first jaw (31), one side of the positioning plate (34) is provided with a limiting groove (341), and the positioning plate (34) is configured such that the limiting groove (341) can be clamped on the connecting arm (321) of the second jaw (32) when the connecting arm (311) of the first jaw (31) and the connecting arm (321) of the second jaw (32) are parallel.

4. Valve seat removal tool according to claim 1, wherein the connecting rod (33) is integrally or detachably connected to the guide rod (1).

5. Valve seat removal tool according to claim 4, wherein the other end of the guide rod (1) has a radially extending mounting hole (12), the connecting rod (33) being inserted in the mounting hole (12).

6. Valve seat removal tool according to claim 5, wherein the connecting rod (33) is clearance fitted to the mounting hole (12), and the connecting rod (33) is prism-shaped;

or the connecting rod (33) is in threaded connection with the mounting hole (12).

7. The valve seat removing tool according to claim 1, wherein the hammer (2) is provided with a hammer head (21), a hammer handle (22) and a partition plate (23) which are coaxially connected, the hammer head (21) is positioned at one end of the hammer handle (22) close to the limiting part (11), the partition plate (23) is positioned at one end of the hammer handle (22) far away from the limiting part (11), and the outer diameter of the hammer handle (22) is smaller than the outer diameters of the hammer head (21) and the partition plate (23).

8. The valve seat removal tool according to any one of claims 1 to 7, wherein the stopper (11) is detachably connected to the guide bar (1).

9. The valve seat removal tool according to any one of claims 1 to 7, further comprising a handle (4), wherein the handle (4) is integrally connected with the stopper portion (11).

10. Valve seat removal tool according to any one of claims 1 to 7, wherein the guide rod (1), the ram (2) and the clamping structure (3) are all steel or cast iron structural parts.

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