Hydraulic cartridge valve dismounting tool

Abstract

The utility model provides a hydraulic cartridge valve disassembling tool which is used for taking out a valve element of a cartridge valve from a valve seat of the cartridge valve, the hydraulic cartridge valve disassembling tool comprises an embracing ring and an ejection screw, the embracing ring is used for being installed on the periphery of the valve element of the cartridge valve in a surrounding mode and clamping the valve element, and the ejection screw is used for ejecting the valve element of the cartridge valve out of the valve seat of the cartridge valve. The holding ring is provided with an ejection threaded hole penetrating through the two axial ends of the holding ring, the ejection screw is connected to the ejection threaded hole in a threaded mode, one end of the ejection screw is used for abutting against the valve seat, and the ejection screw enables the valve element to axially move relative to the valve seat in a rotatable mode. The portion, exposed out of the valve seat, of the valve element is surrounded by the embracing ring, the ejection screw rotates to enable the embracing ring to move in the axial direction of the ejection screw relative to the valve seat, then the valve element moves relative to the valve seat, and therefore the valve element is separated from the valve seat. The dismounting tool is simple in structure, convenient to operate and high in dismounting efficiency, the valve element and the valve seat cannot be damaged in the dismounting process, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly tools, and in particular to a hydraulic cartridge valve disassembly tool. Background Art

[0002] Hydraulic cartridge valves work under high pressure or even high temperature for a long time, which causes the valve core and valve seat to stick together. They cannot be directly separated during maintenance, and hard prying will cause damage to the valve core and valve seat. Therefore, there is an urgent need for a hydraulic cartridge valve disassembly tool that can improve disassembly efficiency and reduce valve damage. Utility Model Content

[0003] The utility model aims to provide a hydraulic cartridge valve disassembly tool which can improve the disassembly efficiency of the cartridge valve core.

[0004] In order to achieve the above objectives, the utility model provides the following technical solutions:

[0005] The utility model provides a hydraulic cartridge valve disassembly tool, which is used for removing the valve core of the cartridge valve from the valve seat of the cartridge valve, and comprises a holding ring and an ejection screw. The holding ring is used for surrounding the outer periphery of the valve core of the cartridge valve and clamping the valve core. The holding ring is provided with ejection threaded holes which pass through both axial ends thereof. The ejection screw is threadedly connected to the ejection threaded hole. One end of the ejection screw is used for tightening on the valve seat and the ejection screw can be rotatably moved to make the valve core move axially relative to the valve seat.

[0006] In one embodiment, the holding ring includes a pair of arc-shaped clamping plates, each arc-shaped clamping plate is provided with a semicircular hole and the ejection threaded hole, and the two arc-shaped clamping plates are fixed to each other in a manner that the semicircular holes relatively define a clamping circular hole that matches the outer periphery of the valve core.

[0007] In one embodiment, the disassembly tool also includes a pair of fixing screws; a fixing threaded hole is provided at one end of the arc-shaped clamping piece, and a fixing ear plate is provided at the other end of the arc-shaped clamping piece, and the fixing ear plate is provided with a screw hole, and the fixing screw is passed through the fixing ear plate of one arc-shaped clamping piece and connected to the fixing threaded hole of the other arc-shaped clamping piece.

[0008] In one embodiment, the two arc-shaped clamping pieces are symmetrical about the center of the clamping circular hole.

[0009] In one embodiment, the fixing ear plate is formed by cutting a right-angle notch inwardly along the outer side wall at a position close to the end surface at one end of the arc-shaped clamping piece away from the fixing threaded hole.

[0010] In one embodiment, each of the arc-shaped clamping pieces is provided with one ejection threaded hole, and the two ejection threaded holes are distributed along the diameter direction of the clamping circular hole.

[0011] In one embodiment, a supporting step is provided in the clamping circular hole.

[0012] In one embodiment, the holding ring and the ejection screw are both made of 304 stainless steel.

[0013] The technical solution provided by the utility model has the following beneficial effects: the hydraulic cartridge valve disassembly tool of the utility model, through the holding ring, holds the part of the valve core exposed on the valve seat, and the ejection screw rotates to make the holding ring move relative to the valve seat along the axial direction of the ejection screw, thereby making the valve core move relative to the valve seat, thereby realizing the separation of the valve core from the valve seat. The disassembly tool has a simple structure, is easy to operate, has a high disassembly efficiency, and will not damage the valve core and the valve seat during the disassembly process, and has a high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments of the present invention.

[0015] Figure 1 An exploded view of a hydraulic cartridge valve disassembly tool provided in one embodiment of the utility model;

[0016] Figure 2 A cross-sectional view of a hydraulic cartridge valve disassembly tool provided in one embodiment of the utility model for disassembling a hydraulic cartridge valve core;

[0017] Figure 3 A cross-sectional view of a hydraulic cartridge valve disassembly tool for disassembling a hydraulic cartridge valve core from another perspective provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0019] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0020] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0021] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0022] See also Figures 1 to 3 The utility model provides a hydraulic cartridge valve disassembly tool 100 (hereinafter referred to as "disassembly tool 100"), which is used to remove the valve core 300 of the cartridge valve from the valve seat 200 of the cartridge valve, thereby improving the disassembly efficiency of the valve core 300 of the cartridge valve without causing damage to the valve core 300 and the valve seat 200, thereby improving the economic benefits of industrial production.

[0023] The disassembly tool 100 includes a holding ring 10 and an ejection screw 30. The holding ring 10 is used to surround and be installed on the outer periphery of the cartridge valve core 300 (specifically, the outer periphery of the portion of the valve core 300 protruding from the end surface of the valve seat 200) and clamp the valve core 300. The holding ring 10 is provided with an ejection threaded hole 112 that passes through both axial ends thereof. The ejection screw 30 is threadedly connected to the ejection threaded hole 112. One end of the ejection screw 30 is used to tighten against the valve seat 200 and the ejection screw 30 can be rotatably moved to make the valve core 300 move relative to the valve seat 200 along the axial direction of the ejection screw 30, thereby completing the separation of the valve core 300 and the valve seat 200.

[0024] The hydraulic cartridge valve disassembly tool 100 of the utility model, by means of the holding ring 10, holds the portion of the valve core 300 exposed on the valve seat 200, and the ejection screw 30 is rotated to make the holding ring 10 move relative to the valve seat 200 along the axial direction of the ejection screw 30, and then the valve core 300 moves relative to the valve seat 200, thereby realizing the separation of the valve core 300 from the valve seat 200. The disassembly tool 100 has a simple structure, is easy to operate, has a high disassembly efficiency, and will not damage the valve core 300 and the valve seat 200 during the disassembly process, and has a high safety.

[0025] In one embodiment, the holding ring 10 includes a pair of arc-shaped clamping plates 11, each arc-shaped clamping plate 11 is provided with a semicircular hole 110 and the ejection threaded hole 112, and the two arc-shaped clamping plates 11 are fixed to each other in such a manner that the semicircular holes 110 relatively define a clamping circular hole that matches the outer periphery of the valve core 300.

[0026] In one embodiment, the disassembly tool 100 also includes a pair of fixing screws 20; a fixing threaded hole 111 is provided at one end of the arc-shaped clamping piece 11, and a fixing ear plate 12 is provided at the other end of the arc-shaped clamping piece 11, and the fixing ear plate 12 is provided with a screw hole 121, and the fixing screw 20 is passed through the fixing ear plate 12 of one arc-shaped clamping piece 11 and connected to the fixing threaded hole 111 of another arc-shaped clamping piece 11.

[0027] In one embodiment, the two arc-shaped clamping pieces 11 are symmetrical about the center of the clamping circular hole.

[0028] In one embodiment, the fixing ear plate 12 is formed by cutting a right-angle notch 114 inwardly along the outer side wall at a position close to the end surface at one end of the arc-shaped clamping piece 11 away from the fixing threaded hole 111 .

[0029] In the above embodiment, two arc-shaped clamping pieces 11 are separately arranged, and two fixing screws 20 are used to fix the two arc-shaped clamping pieces 11. In other embodiments, one end of the two arc-shaped clamping pieces 11 can be hinged, and the other end can be fixed by screws or a locking structure to fix the two clamping pieces.

[0030] In one embodiment, each of the arc-shaped clamping pieces 11 is provided with one ejection threaded hole 112 , and the two ejection threaded holes 112 are distributed along the diameter direction of the clamping circular hole.

[0031] In addition, more ejector threaded holes 112 can also be provided, preferably evenly distributed on the two arc-shaped clamping plates 11. Although the operation of rotating multiple ejector screws to remove the valve core 300 is more cumbersome than rotating two ejector screws 30, it can overcome the limitation of the operating space. The ejector screws 30 can be installed in two or more screw holes 121 that are convenient for operation to achieve the removal of the valve core 300, and can also overcome the greater adhesion force between the valve core 300 and the valve seat 200.

[0032] In one embodiment, a supporting step 113 is provided in the clamping circular hole. The supporting step 113 is supported under the flange on the outer periphery of the valve core 300 to facilitate the separation of the valve core 300 and the valve seat 200.

[0033] In other embodiments, the outer contour of the clamping piece may also be in other shapes, such as a rectangle, as long as the semicircular hole inside the clamping piece matches the outer circumference of the valve core 300 to be removed. In addition, the size of the semicircular hole can be set according to the use requirements to adapt to the removal of valve cores of different sizes.

[0034] In one embodiment, the holding ring 10, the fixing screw 20 and the ejection screw 30 are all made of 304 stainless steel.

[0035] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the above utility model. For example, the above features are replaced with the technical features of the utility model (but not limited to) with similar functions in the utility model of the utility model to form a technical solution.

[0036] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A hydraulic cartridge valve disassembly tool, used to remove the valve core of the cartridge valve from the valve seat of the cartridge valve, characterized in that: It includes an embrace ring and an ejector screw. The embrace ring is used to surround the outer periphery of the cartridge valve core and clamp the valve core. The embrace ring is provided with ejector threaded holes passing through its two axial ends. The ejector screw is threadedly connected to the ejector threaded holes. One end of the ejector screw is used to tighten on the valve seat and the ejector screw can be rotated to make the valve core move axially relative to the valve seat.

2. The hydraulic cartridge valve removal tool according to claim 1, characterized in that: The holding ring comprises a pair of arc-shaped clamping plates, each arc-shaped clamping plate is provided with a semicircular hole and the ejection threaded hole, and the two arc-shaped clamping plates are fixed to each other in a manner that the semicircular holes relatively define a clamping circular hole matching the outer periphery of the valve core.

3. The hydraulic cartridge valve removal tool according to claim 2, characterized in that: A pair of set screws are also included; A fixing threaded hole is provided at one end of the arc-shaped clamping piece, and a fixing ear plate is provided at the other end of the arc-shaped clamping piece. The fixing ear plate is provided with a screw hole. The fixing screw is passed through the fixing ear plate of one arc-shaped clamping piece and connected to the fixing threaded hole of the other arc-shaped clamping piece.

4. The hydraulic cartridge valve removal tool according to claim 3, characterized in that: The two arc-shaped clamping pieces are symmetrical about the center of the clamping circular hole.

5. The hydraulic cartridge valve removal tool according to claim 3, characterized in that: The fixing ear plate is formed by cutting a right-angle notch inwardly along the outer side wall at a position close to the end surface at one end of the arc-shaped clamping piece away from the fixing threaded hole.

6. The hydraulic cartridge valve removal tool according to claim 2, characterized in that: Each of the arc-shaped clamping pieces is provided with one ejection threaded hole, and the two ejection threaded holes are distributed along the diameter direction of the clamping circular hole.

7. The hydraulic cartridge valve removal tool according to claim 2, characterized in that: A supporting step is arranged in the clamping circular hole.

8. The hydraulic cartridge valve removal tool according to claim 1, characterized in that: The holding ring and the ejector screw are both made of 304 stainless steel.

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