Plunger pump fluid end valve seat dismounting tool

Abstract

The invention relates to the technical field of maintenance devices, in particular to a plunger pump fluid end valve seat disassembling tool which comprises a punch hammer, a plunger pump fluid end valve seat disassembling tool and a plunger pump fluid end valve seat disassembling tool. The supporting seat comprises a supporting column and a bottom plate, and the bottom plate is arranged at the bottom end of the supporting column; the locking piece is arranged on the bottom plate in a limiting manner and is provided with a locking structure capable of locking the valve seat; the bottom plate is provided with an outer contour shape matched with the valve seat so that the bottom plate can enter an assembly hole where the valve seat is located and be close to the valve seat. The punch hammer is slidably arranged on the supporting column through the center hole structure, and a limiting piece used for stopping the punch hammer is arranged at the top end of the supporting column. According to the scheme, the defects that in the prior art, valve seat dismounting efficiency is low and operation complexity is high are overcome, and rapid, efficient and easy-to-operate overhauling operation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance devices, and in particular to a tool for disassembling a valve seat at a hydraulic end of a plunger pump. Background Art

[0002] At present, the number of large emulsion pumps used in coal mines has gradually increased, especially the large-flow emulsion pumps are increasingly widely used in mines. As one of the core components of the emulsion pump, the hydraulic end is crucial to ensure the normal operation of the equipment and improve the overall work efficiency. However, the current maintenance of the hydraulic end faces many challenges, especially the low disassembly efficiency and the cumbersome use of maintenance tools.

[0003] Although the traditional tools used for the hydraulic end of the plunger pump meet the basic disassembly requirements to some extent, they have obvious limitations in terms of operation complexity and disassembly efficiency. In particular, when handling large emulsion pumps, the use of traditional tools often takes a long time and requires a lot of manpower, which not only greatly increases the workload of maintenance personnel and delays production time, but also easily leads to operational errors or damage during the maintenance process, thereby affecting the performance and life of the equipment in the next use. Summary of the invention

[0004] The invention provides a plunger pump hydraulic end valve seat disassembly tool, which is used to solve the defects of low valve seat disassembly efficiency and high operation complexity in the prior art, and realizes fast, efficient and easy-to-operate maintenance work.

[0005] The present invention provides a tool for disassembling a valve seat at the hydraulic end of a plunger pump, comprising: a hammer provided with a center hole structure; a support seat comprising a support column and a base plate, wherein the base plate is arranged at the bottom end of the support column; a locking piece, which is limitedly arranged on the base plate and has a locking structure capable of locking the valve seat; the base plate has an outer contour shape adapted to the valve seat so as to be able to enter the assembly hole where the valve seat is located and approach the valve seat; the hammer is slidably arranged on the support column through the center hole structure, and a limit piece for stopping the hammer is arranged at the top end of the support column.

[0006] According to one embodiment of the present invention, the locking piece is a stud, which includes a rod as a main body and a threaded portion at one end of the rod, and the threaded portion matches the threaded hole on the valve seat; the base plate is provided with a first through hole, the outer diameter of the rod is larger than the inner diameter of the first through hole, the outer diameter of the threaded portion is smaller than the inner diameter of the first through hole, and the length of the threaded portion is larger than the thickness of the base plate.

[0007] According to one embodiment of the present invention, a plurality of the first through holes are provided on the bottom plate; the positions of the plurality of the first through holes correspond to the positions of the plurality of threaded holes on the valve seat.

[0008] According to one embodiment of the present invention, the support seat also includes an upper plate with the same outer contour shape as the base plate; the upper plate is arranged on the support column, and the upper plate is provided with a second through hole opposite to the first through hole, and the distance between the upper plate and the base plate is smaller than the length of the rod portion of the stud; the top end of the stud is provided with a screwing portion that can be adapted to a manual screwing tool; when the threaded portion passes through the first through hole, the bottom end of the rod portion is limitedly clamped on the upper surface of the base plate, and the top end of the rod portion passes through the second through hole so that the screwing portion is higher than the upper surface of the upper plate.

[0009] According to one embodiment of the present invention, an intermediate plate is further arranged on the support column between the bottom plate and the upper plate; the intermediate plate is provided with a third through hole opposite to the first through hole and the second through hole, and the aperture of the third through hole is equal to the aperture of the second through hole.

[0010] According to one embodiment of the present invention, any one or more of the bottom plate, the upper plate and the middle plate are provided with fourth through holes to form a hollow structure on the plate body.

[0011] According to one embodiment of the present invention, a threaded structure is disposed at the top end of the support column, and the limiting member is a locking nut adapted to the threaded structure.

[0012] According to one embodiment of the present invention, the locking nut includes at least two nut members locked with each other on the threaded structure.

[0013] According to one embodiment of the present invention, a buffer layer is provided on a side of the hammer facing the locking nut.

[0014] According to one embodiment of the present invention, the support column is divided into a sliding rod section and a supporting rod section; the limiting member is arranged at the end of the sliding rod section, the bottom plate is arranged at the end of the supporting rod section, the hammer is slidably fitted in the sliding rod section, and the diameter of the supporting rod section is larger than the diameter of the sliding rod section to form a step limiting structure at the bottom end of the sliding rod section.

[0015] The plunger pump hydraulic end valve seat disassembly tool provided by the present invention uses a hammer structure so that the valve seat can be conveniently and quickly removed from the hydraulic end. The entire tool is easy to install and use, and is lightweight in design, thereby minimizing labor intensity.

[0016] Specifically, the punch is designed with a center hole structure, which enables it to slide freely along the support column. Combined with the limiter on the top of the support column, the safety and stability of the operation are ensured. The bottom plate is designed with an outer contour that matches the valve seat, which can be accurately inserted into the valve seat assembly hole, and the valve seat is firmly fixed by the locking piece to avoid displacement during disassembly.

[0017] In actual operation, first align the base plate and insert it into the valve seat assembly hole, use the locking piece to fix the valve seat, then move the handheld hammer in the direction of the limiter and apply impact force, and use the impact inertia to push the valve seat out of the installation position. This tooling not only simplifies the disassembly process, improves disassembly efficiency, and reduces manpower requirements, but also avoids the risk of equipment damage caused by improper manual operation in traditional methods. It is particularly suitable for working surfaces with limited space in coal mines. Its compact design facilitates operation in narrow environments, reduces the labor intensity of maintenance personnel, and improves maintenance efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the plunger pump hydraulic end valve seat disassembly tool provided by the present invention.

[0020] Figure 2 It is one of the structural schematic diagrams of the support seat of the plunger pump hydraulic end valve seat disassembly tool provided by the present invention.

[0021] Figure 3 It is a schematic diagram of the use state of the tooling provided by the present invention for disassembling the drain valve seat.

[0022] Figure 4 This is the second structural schematic diagram of the plunger pump hydraulic end valve seat disassembly tool provided by the present invention.

[0023] Figure 5 This is the second structural schematic diagram of the support seat of the plunger pump hydraulic end valve seat disassembly tool provided by the present invention.

[0024] Figure 6 It is a schematic diagram of the use state of the tooling provided by the present invention for disassembling the liquid suction valve seat.

[0025] Reference numerals: 101. Discharge valve seat; 102. Suction valve seat; 110. Hammer; 111. Buffer layer; 120. Support column; 121. Locking nut; 122. Sliding rod section; 123. Support rod section; 131. Bottom plate; 132. First through hole; 133. Upper plate; 134. Second through hole; 135. Middle plate; 136. Third through hole; 137. Fourth through hole; 140. Stud; 141. Threaded portion; 142. Screwing portion. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] Combine the following Figures 1 to 6 The specific implementation of the plunger pump hydraulic end valve seat disassembly tool of the present invention is described.

[0029] like Figure 1 and Figure 4As shown, the present invention provides a plunger pump hydraulic end valve seat disassembly tool, including: a hammer 110, which is provided with a center hole structure; a support seat, including a support column 120 and a bottom plate 131, and the bottom plate 131 is arranged at the bottom end of the support column 120; a locking member, which is limitedly arranged on the bottom plate 131 and has a locking structure capable of locking the valve seat; the bottom plate 131 has an outer contour shape adapted to the valve seat so as to be able to enter the assembly hole where the valve seat is located and approach the valve seat; the hammer 110 is slidably arranged on the support column 120 through the center hole structure, and the top end of the support column 120 is provided with a limiting member for stopping the hammer 110.

[0030] Specifically, the plunger pump hydraulic end valve seat disassembly tool is designed to have a center hole structure by designing the hammer 110 so that it can slide up and down smoothly along the support column 120. The support column 120 is firmly fixed on the bottom plate 131 of the support seat, and the bottom plate 131 is designed with an outer contour shape that matches the valve seat to ensure that it can be accurately inserted into the assembly hole of the valve seat. The locking member is installed on the bottom plate 131 and has a specially designed locking mechanism, such as a bolt connected by a thread, or a clamping member that clamps the workpiece through expansion and contraction, which can ensure the stability of the valve seat during the disassembly process and avoid any unnecessary displacement. When performing the disassembly task, the operator only needs to control the movement of the hammer 110 and use the impact force generated by the hammer 110 to cause the valve seat to smoothly detach from the original installation position. The limiter equipped on the top of the support column 120 plays a vital role. It can effectively prevent the hammer 110 from accidentally sliding out during operation, thereby ensuring the safety of the entire disassembly process.

[0031] In actual use, the operation steps are as follows: first, accurately align the bottom plate 131 of the disassembly tool and insert it into the assembly hole where the valve seat is located; then, use the locking piece to firmly lock the valve seat; then, the operator holds the hammer 110 and moves it in the direction of the limiter to apply impact force at the right time. By repeatedly knocking and utilizing the inertial force generated by the impact, the valve seat can be efficiently removed from the installation position. This design not only simplifies the disassembly process, improves disassembly efficiency, and reduces labor input, but also effectively avoids damage to the equipment caused by operational errors that may occur in traditional disassembly methods. Especially for those working areas in coal mines where the height and width are limited, the disassembly tool, with its compact and reasonable design, can not only complete efficient disassembly tasks in a limited space, but also significantly reduce the labor intensity of maintenance personnel, improve maintenance efficiency, and ensure the safety of the maintenance process. The lightweight nature of the tool also allows it to be easily carried to different maintenance points, adapting to the complex and changeable working environment in coal mines.

[0032] Furthermore, in order to cope with the disassembly requirements of valve seats of various models and sizes, adjustable locking parts and base plates 131 of various specifications can be introduced into the design of the disassembly tool, which not only increases the flexibility and wide applicability of the tool, but also improves its practical value in practical applications. In view of the special requirements of the underground environment of coal mines, corrosion-resistant and wear-resistant materials are preferably selected to make the disassembly tool, which can ensure that the tool still maintains good durability and reliability in the face of harsh working conditions.

[0033] According to a plunger pump hydraulic end valve seat disassembly tool of the present invention, the locking member is a stud 140, the stud 140 includes a rod as a main body and a threaded portion 141 located at one end of the rod, and the threaded portion 141 matches the threaded hole on the valve seat; the bottom plate 131 is provided with a first through hole 132, the outer diameter of the rod is larger than the inner diameter of the first through hole 132, the outer diameter of the threaded portion 141 is smaller than the inner diameter of the first through hole 132, and the length of the threaded portion 141 is larger than the thickness of the bottom plate 131. Specifically, the above structure allows the threaded portion 141 to pass through the first through hole 132 of the bottom plate 131 and fit closely with the threaded hole on the valve seat, while the rod is blocked by the bottom plate 131, which plays a role in limiting the stud 140. When the stud 140 is screwed into the valve seat, the valve seat can be firmly fixed on the bottom plate 131, ensuring that the valve seat will not be displaced during the disassembly process, thereby improving the precision and safety of disassembly.

[0034] Furthermore, in order to adapt to valve seats of different sizes, the length of the stud 140 and the size of the threaded portion 141 can be adjusted or replaced according to actual needs. In addition, the material of the stud 140 can be selected from high-strength steel or other wear-resistant materials to improve its durability under frequent use conditions. For easy operation, the other end of the stud 140 can be designed with a hexagonal shape or other shapes that are convenient for tool clamping, so that maintenance personnel can more easily use tools such as wrenches to perform locking or loosening operations.

[0035] like Figure 2 and Figure 5 As shown, according to a plunger pump hydraulic end valve seat disassembly tool of the present invention, a plurality of first through holes 132 are provided on the bottom plate 131; the positions of the plurality of first through holes 132 correspond to the positions of the plurality of threaded holes on the valve seat. Specifically, by providing a plurality of first through holes 132, it is ensured that each threaded hole can cooperate with a locking member (such as a stud 140) through the corresponding first through hole 132, thereby realizing multi-point fixation of the valve seat. The multi-point fixation structure not only improves the stability of the valve seat during the disassembly process, but also disperses the force points, reduces the load on a single fixing point, and reduces the risk of damage to the valve seat.

[0036] Furthermore, the number of the first through holes 132 can be set to be greater than the number of threaded holes on the valve seat. In actual use, a corresponding number of through holes can be selected for fixing as needed, thereby increasing the scope of application of the tooling. The unused through holes can not only be used as a backup, but also play a role in reducing weight, making the entire disassembly tooling lighter and easier to carry and operate.

[0037] According to a plunger pump hydraulic end valve seat disassembly tool of the present invention, the support seat also includes an upper plate 133 with the same outer contour shape as the bottom plate 131; the upper plate 133 is arranged on the support column 120, and the upper plate 133 is provided with a second through hole 134 opposite to the first through hole 132, and the distance between the upper plate 133 and the bottom plate 131 is less than the length of the rod of the stud 140; the top end of the stud 140 is provided with a screwing portion 142 that can be adapted to a manual screwing tool; when the threaded portion 141 passes through the first through hole 132, the bottom end of the rod is limitedly clamped on the upper surface of the bottom plate 131, and the top end of the rod passes through the second through hole 134 so that the screwing portion 142 is higher than the upper surface of the upper plate 133. Specifically, the stability and reliability of the stud 140 when fixing the valve seat are ensured by the upper plate 133 and the bottom plate 131. The second through hole 134 of the upper plate 133 corresponds to the first through hole 132 of the bottom plate 131, so that the stud 140 can smoothly pass through the two layers of the plate and be fixed by the screwing portion 142. The screwing portion 142 is higher than the upper surface of the upper plate 133, which is convenient for maintenance personnel to use manual screwing tools to operate, thereby improving the convenience and efficiency of disassembly. The distance between the upper plate 133 and the bottom plate 131 is less than the length of the rod of the stud 140. The purpose is that when the threaded portion 141 passes through the first through hole 132, the rod is always radially limited by the second through hole 134 of the upper plate 133 to ensure that the stud 140 will not deviate during the tightening process.

[0038] Furthermore, in order to improve the applicability and operational convenience of the tooling, the thickness and spacing of the upper plate 133 and the bottom plate 131 can be optimized, for example, the installation position of the upper plate 133 relative to the support column 120 can be set to be adjustable to adapt to different application scenarios. In addition, the screwing portion 142 can be designed as a hexagonal, cross-shaped or other common tool interface to facilitate the use of various types of screwing tools. In order to further enhance the durability of the tooling, the material of the upper plate 133 and the bottom plate 131 can be selected from high-strength alloy steel to resist wear and deformation during frequent use.

[0039] According to a plunger pump hydraulic end valve seat disassembly tool of the present invention, an intermediate plate 135 is further provided on the support column 120 between the bottom plate 131 and the upper plate 133; the intermediate plate 135 is provided with a third through hole 136 opposite to the first through hole 132 and the second through hole 134, and the aperture of the third through hole 136 is equal to the aperture of the second through hole 134. By adding the intermediate plate 135, the structural stability and reliability of the tool are further enhanced. The third through hole 136 on the intermediate plate 135 is aligned with the first through hole 132 of the bottom plate 131 and the second through hole 134 of the upper plate 133, ensuring that the stud 140 can maintain a straight line when passing through these through holes, preventing the upper plate 133 and the bottom plate 131 from being difficult to align the stud 140 during use due to the long distance. The presence of the intermediate plate 135 also provides additional radial limit, making the stud 140 more stable during the tightening process, reducing the risk of loosening due to vibration or external force. It is understandable that, depending on the depth of the assembly holes, one or more intermediate plates 135 may be provided as required.

[0040] According to a plunger pump hydraulic end valve seat disassembly tool of the present invention, any one or more of the bottom plate 131, the upper plate 133 and the middle plate 135 is provided with a fourth through hole 137 to form a hollow structure on the plate body. Specifically, the hollow structure reduces the overall weight of the tool and improves its portability. The hollow structure can also be used as an observation hole to facilitate maintenance personnel to check the installation of the stud 140 and other components during the disassembly process, ensuring the smooth progress of the disassembly work.

[0041] Preferably, the various hole positions mentioned above are symmetrically arranged relative to the support column 120, thereby improving the balance of the tooling. Specifically, the symmetrically arranged hole positions can ensure that the tooling is evenly stressed during use, avoid tilting or offsetting due to uneven stress, and improve the stability and accuracy of disassembly. The symmetrical design also helps to simplify the manufacturing process of the tooling and reduce production costs, while ensuring the consistency of the operation of the tooling in different directions, enhancing its versatility and reliability. Through the reasonable layout of the hole positions, the operation of the tooling during the disassembly process is smoother, reducing the difficulty of operation and improving work efficiency.

[0042] According to a plunger pump hydraulic end valve seat disassembly tool of the present invention, the top of the support column 120 is provided with a threaded structure, and the limiting member is a locking nut 121 adapted to the threaded structure. Through the cooperation of the locking nut 121 and the threaded structure at the top of the support column 120, the impact hammer 110 can be effectively limited to prevent it from slipping out during the impact process, thereby ensuring the safety and reliability of the operation. The use of the locking nut 121 also makes the assembly and disassembly of the disassembly tool more convenient, and it is convenient for maintenance personnel to quickly adjust the configuration of the tool according to needs.

[0043] Furthermore, according to a plunger pump hydraulic end valve seat disassembly tool of the present invention, the locking nut 121 includes at least two nut parts that are locked to each other on the threaded structure. Specifically, this double nut or multi-nut design can further improve the stability of the limiter and prevent loosening due to vibration during the impact process. For example, the two nut parts bite each other to form a more secure locking structure, ensuring that the hammer 110 can remain stable under multiple impacts, thereby improving the reliability and durability of the tool.

[0044] Furthermore, according to a plunger pump hydraulic end valve seat disassembly tool of the present invention, a buffer layer 111 is provided on the side of the hammer 110 facing the locking nut 121. Specifically, the provision of the buffer layer 111 can effectively reduce the direct collision between the hammer 110 and the locking nut 121, reduce the impact noise, reduce wear, and extend the service life of the tool. The buffer layer 111 can be made of rubber, plastic or other elastic materials, which can absorb part of the energy during the impact process, reduce the impact force on the locking nut 121 and the support column 120, and ensure the stability and safety of the tool in high-frequency use. In addition, the buffer layer 111 can also improve the comfort of operation and reduce the fatigue of the operator.

[0045] According to a plunger pump hydraulic end valve seat disassembly tooling of the present invention, the support column 120 is divided into a sliding rod section 122 and a support rod section 123; a limiter is arranged at the end of the sliding rod section 122, a bottom plate 131 is arranged at the end of the support rod section 123, and the hammer 110 is slidably matched with the sliding rod section 122, and the diameter of the support rod section 123 is larger than the diameter of the sliding rod section 122, so as to form a step limiter structure at the bottom end of the sliding rod section 122. The stability and safety of the hammer 110 during the sliding process are ensured by the segmented support column 120 and the step limiter structure. The step limiter structure forms a physical barrier at the bottom end of the sliding rod section 122 to prevent the hammer 110 from moving excessively downward, while the limiter at the end of the sliding rod section 122 prevents the hammer 110 from sliding upward, and the double limiter design greatly improves the reliability and safety of the tooling. At the same time, the support rod segment 123 with a larger diameter not only provides higher structural strength, but also enhances the rigidity of the entire tooling, thereby reducing the risk of bending and deformation of the support column 120 during use.

[0046] According to a preferred embodiment of the present invention, the plunger pump hydraulic end valve seat disassembly tool can be used to disassemble the discharge valve seat 101 and the suction valve seat 102 of the plunger pump head. Generally, the assembly hole depth of the discharge valve seat 101 is relatively shallow, and the support seat of the disassembly tool is preferably composed of a support column 120, an upper plate 133 and a bottom plate 131; while the assembly hole depth of the suction valve seat 102 is relatively deep, and the support seat of the disassembly tool is composed of a support column 120, an upper plate 133, a bottom plate 131 and an intermediate plate 135.

[0047] like Figure 3 As shown, when removing the drain valve seat 101, place the tool above the drain valve seat 101 so that the bottom plate 131 contacts the upper surface of the drain valve seat 101. Then, tighten the stud 140 into the threaded hole on the drain valve seat 101, and then adjust the locking nut 121 to a suitable position and tighten it. Finally, use the handheld hammer 110 to hit the locking nut 121, and remove the drain valve seat 101 from the installation position through the impact force generated by the impact.

[0048] like Figure 6 As shown, when removing the suction valve seat 102, place the tooling above the suction valve seat 102 so that the bottom plate 131 contacts the upper surface of the suction valve seat 102. After that, tighten the stud 140 into the threaded hole on the suction valve seat 102, and then adjust the locking nut 121 to a suitable position and tighten it. Finally, the handheld hammer 110 hits the locking nut 121, and the suction valve seat 102 is removed from the installation position by the impact force generated by the impact. The addition of the intermediate plate 135 ensures the structural stability and reliability when disassembling at a deep hole position, and improves the disassembly efficiency and safety.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plunger pump hydraulic end valve seat disassembly tool, characterized in that: include: The hammer (110) is provided with a central hole structure; A support seat, comprising a support column (120) and a bottom plate (131), wherein the bottom plate (131) is arranged at the bottom end of the support column (120); A locking member, which is limitedly disposed on the bottom plate (131) and has a locking structure capable of locking the valve seat; The bottom plate (131) has an outer contour shape adapted to the valve seat so as to be able to enter the assembly hole where the valve seat is located and to be close to the valve seat; The punch (110) is slidably disposed on the support column (120) through the central hole structure, and a limiting member for stopping the punch (110) is disposed at the top end of the support column (120).

2. The plunger pump hydraulic end valve seat disassembly tool according to claim 1, characterized in that: The locking member is a stud (140), the stud (140) comprising a rod portion as a main body and a threaded portion (141) located at one end of the rod portion, the threaded portion (141) matching the threaded hole on the valve seat; The bottom plate (131) is provided with a first through hole (132), the outer diameter of the rod portion is larger than the inner diameter of the first through hole (132), the outer diameter of the threaded portion (141) is smaller than the inner diameter of the first through hole (132), and the length of the threaded portion (141) is larger than the thickness of the bottom plate (131).

3. The plunger pump hydraulic end valve seat disassembly tool according to claim 2, characterized in that: The bottom plate (131) is provided with a plurality of the first through holes (132); The positions of the plurality of first through holes (132) correspond to the positions of the plurality of threaded holes on the valve seat.

4. The plunger pump hydraulic end valve seat disassembly tool according to claim 2, characterized in that: The support seat further comprises an upper plate (133) having the same outer contour shape as the bottom plate (131); The upper plate (133) is arranged on the support column (120), the upper plate (133) is provided with a second through hole (134) opposite to the first through hole (132), and the distance between the upper plate (133) and the bottom plate (131) is smaller than the length of the rod portion of the stud (140); The top end of the stud (140) is provided with a screwing portion (142) that is adaptable to a manual screwing tool; When the threaded portion (141) passes through the first through hole (132), the bottom end of the rod portion is limitedly clamped on the upper surface of the bottom plate (131), and the top end of the rod portion passes through the second through hole (134) so ​​that the screwing portion (142) is higher than the upper surface of the upper plate (133).

5. The plunger pump hydraulic end valve seat disassembly tool according to claim 4, characterized in that: An intermediate plate (135) is also provided on the support column (120) between the bottom plate (131) and the upper plate (133); The middle plate (135) is provided with a third through hole (136) opposite to the first through hole (132) and the second through hole (134); the aperture of the third through hole (136) is equal to the aperture of the second through hole (134).

6. The plunger pump hydraulic end valve seat disassembly tool according to claim 5, characterized in that: Any one or more of the bottom plate (131), the upper plate (133) and the middle plate (135) is provided with a fourth through hole (137) to form a hollow structure on the plate body.

7. The tool for disassembling the valve seat of the hydraulic end of a plunger pump according to any one of claims 1 to 6, characterized in that: A threaded structure is provided at the top end of the support column (120), and the limiting member is a locking nut (121) adapted to the threaded structure.

8. The plunger pump hydraulic end valve seat disassembly tool according to claim 7, characterized in that: The locking nut (121) comprises at least two nut parts which are locked with each other on the threaded structure.

9. The plunger pump hydraulic end valve seat disassembly tool according to claim 7, characterized in that: A buffer layer (111) is provided on a side of the punch (110) facing the locking nut (121).

10. The tool for disassembling the valve seat of the hydraulic end of a plunger pump according to any one of claims 1 to 6, characterized in that: The support column (120) is divided into a sliding rod section (122) and a support rod section (123); The limiting member is arranged at the end of the sliding rod section (122), the bottom plate (131) is arranged at the end of the supporting rod section (123), the punch (110) is slidably matched with the sliding rod section (122), and the diameter of the supporting rod section (123) is larger than the diameter of the sliding rod section (122), so as to form a step limiting structure at the bottom end of the sliding rod section (122).

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