Grinding tool for valve element and valve seat of regulating valve

Abstract

The utility model relates to a valve core and valve seat grinding tool of a regulating valve, a first valve core fixing and clamping matching surface is arranged on a first supporting plate, the first valve core fixing and clamping matching surface is located on the upper side of the first supporting plate, a first threaded connecting column is connected with the first supporting plate, the first threaded connecting column is vertically arranged, and a second threaded connecting column is connected with the second supporting plate. A first clamping and locking nut is arranged at the upper end of the first threaded connecting column and located on the upper side of the first valve element fixing, clamping and matching face, and a valve element inverted fixing position is arranged between the first clamping and locking nut and the first valve element fixing, clamping and matching face. The valve element body can be conveniently fixed and clamped, a valve seat is rotated for grinding, the corresponding clamping and locking nut is loosened and taken down until grinding is finished, a workpiece is taken out, frequent disassembly and assembly are not needed, the grinding machining efficiency is relatively higher, the problem of coaxiality deviation caused by frequent disassembly and assembly is avoided, it is ensured that the width of a grinding sealing face is relatively consistent, and the machining efficiency is improved. The grinding condition can be observed in the whole grinding process, and the grinding agent can be added or replaced online.

Description

Technical Field

[0001] The utility model relates to a tooling, in particular to a tooling structure for grinding the cooperation between the valve seat and the valve core of a regulating valve. Background Technique

[0002] A regulating valve is equipped with a valve seat and a valve core. The valve core and the valve seat can be closed to shut off the valve. The outer sealing surface of the valve core and the inner sealing surface of the valve seat can cooperate to form a sealing pair. During the processing, it is necessary to grind the sealing surfaces between the valve seat and the valve core with each other. When grinding, the valve seat and the valve core need to be pre-installed in the regulating valve, and the corresponding grinding agent is added, and the valve cover is installed. etc. The valve core is driven to rotate by the valve rod 23 to grind with the valve seat to process and manufacture the sealing surface. During the grinding process, it is necessary to grasp the processing conditions of the sealing surface, such as the width of the sealing surface, the roughness and smoothness of the sealing surface, etc. Moreover, during the grinding process, it is necessary to continuously add the grinding agent, and multiple processes such as rough grinding and fine grinding are required. Different grinding agents need to be added according to requirements, and the regulating valve needs to be frequently disassembled and assembled, and the valve cover needs to be disassembled and assembled. Not only is the processing efficiency low, but the grinding effect is also poor. During the frequent disassembly and assembly process, the coaxiality will also deviate, resulting in inconsistent widths of the sealing surfaces. In addition, during the grinding process, in the closed regulating valve, it is impossible to accurately grasp the grinding degree, impossible to observe the grinding situation, and impossible to add or replace the grinding agent online. Summary of the Utility Model

[0003] In view of the technical problems existing in the background technique, the technical problem solved by the utility model aims to provide a grinding tooling for the valve core and valve seat of a regulating valve that does not need to be frequently disassembled and assembled, is convenient to observe, and can add the grinding agent online.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: A grinding tooling for the valve core and valve seat of a regulating valve, including a first tooling structure. The first tooling structure includes a first support plate, a first clamping and locking nut, and a first threaded connection column that is matched with the connection hole of the valve core. The characteristics are as follows: A first valve core fixing and clamping mating surface is provided on the first support plate. The first valve core fixing and clamping mating surface is located on the upper side of the first support plate. The first threaded connection column is connected to the first support plate. The first threaded connection column is arranged vertically. The upper end of the first threaded connection column is provided with a first clamping and locking nut. The first clamping and locking nut is located on the upper side of the first valve core fixing and clamping mating surface. The position between the first clamping and locking nut and the first valve core fixing and clamping mating surface is the inverted fixing position of the valve core.

[0005] The following various optimizations or supplementary descriptions can be carried out on the above technical solutions respectively.

[0006] The grinding tooling for the valve core and valve seat of the regulating valve further includes a second tooling structure, and the second tooling structure includes a second support plate, a second clamping and locking nut, and a second threaded connection column that is matched with the connection hole of the valve core. It is characterized in that: a second valve core fixed clamping and fitting surface is provided on the second support plate, and the second valve core fixed clamping and fitting surface is located on the lower side of the second support plate. The second threaded connection column is connected to the second support plate, the second threaded connection column is arranged vertically, the lower end of the second threaded connection column is equipped with a second clamping and locking nut, the second clamping and locking nut is located on the lower side of the second valve core fixed clamping and fitting surface, and the position between the second clamping and locking nut and the second valve core fixed clamping and fitting surface is the normal placement and fixing position of the valve core; the first support plate is also connected with a column, and the second support plate is connected to the column.

[0007] For example, the second support plate is located above the first support plate.

[0008] In addition, the connection hole of the valve core is a valve stem connection and assembly through hole.

[0009] Among them, the first threaded connection column has a first guiding portion, and the first guiding portion is in guiding cooperation with the connection hole, and the first guiding portion is located below the first clamping and locking nut.

[0010] Among them, the second threaded connection column has a second guiding portion, and the second guiding portion is in guiding cooperation with the connection hole, and the second guiding portion is located above the second clamping and locking nut.

[0011] The grinding tooling for the valve core and valve seat of the regulating valve includes a second tooling structure. The second tooling structure includes a second support plate, a second clamping and locking nut, and a second threaded connection column that is matched with the connection hole of the valve core. It is characterized in that: a second valve core fixed clamping and fitting surface is provided on the second support plate, and the second valve core fixed clamping and fitting surface is located on the lower side of the second support plate. The second threaded connection column is connected to the second support plate, the second threaded connection column is arranged vertically, the lower end of the second threaded connection column is equipped with a second clamping and locking nut, the second clamping and locking nut is located on the lower side of the second valve core fixed clamping and fitting surface, and the position between the second clamping and locking nut and the second valve core fixed clamping and fitting surface is the normal placement and fixing position of the valve core. Further optimization: the connection hole of the valve core is a valve stem connection and assembly through hole. Further optimization: the second threaded connection column has a second guiding portion, and the second guiding portion is in guiding cooperation with the connection hole, and the second guiding portion is located above the second clamping and locking nut.

[0012] The beneficial effects of the present utility model are as follows: it can conveniently fix and clamp the valve core body, grind by rotating the valve seat until the grinding is completed, then loosen and remove the corresponding clamping lock nut, and then take out the valve core body. There is no need for frequent disassembly and assembly, reducing the workload and working intensity of disassembly and assembly. The grinding processing efficiency is relatively higher, ensuring the coaxiality during the grinding process of the valve core and the valve seat, avoiding the problem of coaxiality deviation caused by frequent disassembly and assembly, ensuring that the width of the grinding sealing surface is relatively consistent, thereby improving the sealing effect. Moreover, the grinding situation can be observed throughout the grinding process, and the grinding agent can be added or replaced online. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following describes the implementation manners of the present utility model and the relevant details and working principles of the embodiments in conjunction with the drawings.

[0014] Figure 1 It is a schematic diagram mainly showing the structure of the first tooling alone in the present utility model.

[0015] Figure 2 is Figure 1 an enlarged view of A in

[0016] Figure 3 It is a schematic diagram mainly showing the structure of the second tooling alone in the present utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the valve core and valve seat during grinding in the regulating valve in the background art.

[0018] In the figure: 1. The first tooling structure; 2. The first support plate; 3. The first clamping lock nut; 4. The first threaded connection column; 5. The first valve core fixed clamping mating surface; 11. The second tooling structure; 12. The second support plate; 13. The second clamping lock nut; 14. The second threaded connection column; 15. The second valve core fixed clamping mating surface; 16. The column; 21. The valve core body; 22. The connection hole; 23. The valve stem; 24. The valve seat; 25. The valve body; 26. The valve cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the implementation manners of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0020] Referring to the attached drawings, in the embodiment of this implementation manner, a grinding tooling for the valve core and valve seat of a regulating valve includes a first support plate 2, a first clamping lock nut 3, and a first threaded connecting column 4. The first threaded connecting column 4 is provided to be matched with the connecting hole 22 of the valve core (i.e., the valve core body 21). During use, the valve core body 21 can be conveniently sleeved on the first threaded connecting column 4 for mating connection.

[0021] Among them, a first valve core fixing and clamping mating surface 5 is provided on the first support plate 2. The first valve core fixing and clamping mating surface 5 is located on the upper side of the first support plate 2. The first valve core fixing and clamping mating surface 5 is used to cooperate with clamping and fixing the valve core body 21. The valve core body 21 will be placed on the first support plate 2 and supported and clamped by the first valve core fixing and clamping mating surface 5.

[0022] Among them, the first threaded connecting column 4 is connected to the first support plate 2. The first threaded connecting column 4 is vertically arranged to facilitate the valve core body 21 to be sleeved in. The upper end of the first threaded connecting column 4 is equipped with a first clamping lock nut 3, that is, the first clamping lock nut 3 is rotationally thread-connected on the first threaded connecting column 4 to clamp and lock the valve core body 21; the first clamping lock nut 3 is located on the upper side of the first valve core fixing and clamping mating surface 5. Between the first clamping lock nut 3 and the first valve core fixing and clamping mating surface 5 is the inverted fixing position of the valve core. This inverted fixing position of the valve core is the position where the valve core body 21 is clamped and fixed in an inverted state. When the valve core body 21 (inverted) is sleeved on the first threaded connecting column 4, the lower part of the valve core body 21 is supported by the first valve core fixing and clamping mating surface 5, and the upper part of the valve core body 21 is clamped and locked by the first clamping lock nut 3. The first clamping lock nut 3 and the first valve core fixing and clamping mating surface 5 cooperate to clamp and fix the valve core body 21 in the inverted fixing position of the valve core.

[0023] The working principle and beneficial effects of this grinding tooling for the valve core and valve seat of the regulating valve are that the valve core body 21 can be conveniently clamped and fixed. During grinding, only need to sleeve the valve seat outside the valve core body 21, then the valve seat can be rotated for grinding. Until the grinding is completed, loosen and remove the first clamping lock nut 3, and then take out the valve core body 21. There is no need for frequent disassembly and assembly, reducing the workload and working intensity of disassembly and assembly. The grinding processing efficiency is relatively higher. It ensures the coaxiality during the grinding process of the valve core and the valve seat, avoids the problem of coaxiality deviation caused by frequent disassembly and assembly, ensures that the width of the grinding seal surface is relatively consistent, thereby improving the sealing effect. And the grinding situation can be observed throughout the grinding process, and grinding agent can be added or replaced online.

[0024] Based on the above embodiments respectively, the following optimizations or further explanations can also be carried out.

[0025] The valve core and valve seat grinding tooling for this control valve (also) includes a second tooling structure 11. The second tooling structure 11 includes a second support plate 12, a second clamping lock nut 13, and a second threaded connection post 14 that is matched with the connection hole 22 of the valve core. A second valve core fixed clamping and fitting surface 15 is provided on the second support plate 12. The second valve core fixed clamping and fitting surface 15 is located on the lower side of the second support plate 12. The second valve core fixed clamping and fitting surface 15 is used to cooperate with clamping and fixing the valve core body 21, and the second valve core fixed clamping and fitting surface 15 will block and limit the support of the valve core body 21 from above. Among them, the second threaded connection post 14 is connected to the second support plate 12. The second threaded connection post 14 is vertically arranged. The second threaded connection post 14 is matched with the connection hole 22 of the valve core (i.e., the valve core body 21). When in use, the valve core body 21 can be conveniently sleeved on the second threaded connection post 14 for mating connection. Among them, a second clamping lock nut 13 is arranged at the lower end of the second threaded connection post 14, that is, the second clamping lock nut 13 is rotationally thread-connected on the second threaded connection post 14 to clamp and lock the valve core body 21; the second clamping lock nut 13 is located on the lower side of the second valve core fixed clamping and fitting surface 15. The position between the second clamping lock nut 13 and the second valve core fixed clamping and fitting surface 15 is the correct placement and fixation position of the valve core. This correct placement and fixation position of the valve core is the position where the valve core body 21 is clamped and fixed in the correct placement state (upside down from the inverted state). When the valve core body 21 (in the correct placement) is sleeved on the second threaded connection post 14, the upper part of the valve core body 21 is blocked and limited by the second valve core fixed clamping and fitting surface 15, and the lower part of the valve core body 21 is clamped and locked by the second clamping lock nut 13. The second clamping lock nut 13 and the second valve core fixed clamping and fitting surface 15 cooperate to clamp and fix the valve core body 21 in the correct placement and fixation position of the valve core. When in use, the valve seat can be pre-sleeved outside the valve core body 21 in the correct placement. The valve seat will be assembled on this tooling together with the valve core body 21. The valve core body 21 is sleeved on the second threaded connection post 14. The second clamping lock nut 13 and the second valve core fixed clamping and fitting surface 15 cooperate to clamp and fix the valve core body 21. Then the valve seat can be rotated for grinding. Until the grinding is completed, the second clamping lock nut 13 is loosened and removed, and then the valve core body 21 can be taken out. There is no need for frequent disassembly and assembly, reducing the workload and working intensity of disassembly and assembly. The grinding processing efficiency is relatively higher. It ensures the coaxiality during the grinding process of the valve core and the valve seat, avoids the problem of coaxiality deviation caused by frequent disassembly and assembly, ensures that the width of the grinding sealing surface is relatively consistent, thereby improving the sealing effect. And the grinding situation can be observed throughout the grinding process, and the grinding agent can be added or replaced online.

[0026] For the valve core and valve seat grinding tooling of this control valve, either the first tooling structure 1 or the second tooling structure 11 can be selected alone, or the two tooling structures can be combined.

[0027] For example, the first support plate 2 is also connected with a column, and the second support plate 12 can be connected to the column to form a relatively complete and compact tooling combination structure. Among them, the second support plate 12 can be located above the first support plate 2 to form an upper and lower double-station structure, and two groups of valve cores and valve seats can be ground to further improve work efficiency.

[0028] Among them, the connection hole 22 of the valve core can be a valve stem connection and assembly through hole, which can not only be used for mating connection in the grinding tooling, but also for assembly connection in the valve. The structure is relatively more compact and there is no need to additionally process the valve core.

[0029] For example, the first threaded connection column 4 has a first guiding portion, the first guiding portion is in guiding cooperation with the connection hole 22, and the first guiding portion is located below the first clamping and locking nut 3. The first threaded connection column 4 has corresponding external threads (located above the first guiding portion) for threaded connection with the first clamping and locking nut 3; for example, the second threaded connection column 14 has a second guiding portion, the second guiding portion is in guiding cooperation with the connection hole 22, and the second guiding portion is located above the second clamping and locking nut 13. The second threaded connection column 14 has corresponding external threads (located below the second guiding portion) for threaded connection with the second clamping and locking nut 13. Of course, a threaded connection can also be adopted between the corresponding threaded connection column and the connection hole 22.

Claims

1. A valve core and valve seat grinding tool for a regulating valve, comprising a first tool structure (1), the first tool structure (1) comprising a first support plate (2), a first clamping locking nut (3) and a first threaded connection column (4) for matching with a connection hole (22) of the valve core, characterized in that: A first valve core fixing clamping mating surface (5) is provided on the first support plate (2), the first valve core fixing clamping mating surface (5) is located on the upper side of the first support plate (2), the first threaded connection column (4) is connected to the first support plate (2), the first threaded connection column (4) is vertically arranged, a first clamping locking nut (3) is arranged at the upper end of the first threaded connection column (4), the first clamping locking nut (3) is located on the upper side of the first valve core fixing clamping mating surface (5), and the valve core is inverted and fixed between the first clamping locking nut (3) and the first valve core fixing clamping mating surface (5).

2. The valve core and valve seat grinding tool of a regulating valve according to claim 1, characterized in that: It also includes a second tooling structure (11), which includes a second support plate (12), a second clamping locking nut (13) and a second threaded connection column (14) that is matched with the connection hole (22) of the valve core, and is characterized in that: a second valve core fixing clamping mating surface (15) is provided on the second support plate (12), the second valve core fixing clamping mating surface (15) is located on the lower side of the second support plate (12), the second threaded connection column (14) is connected to the second support plate (12), the second threaded connection column (14) is vertically arranged, and a second clamping locking nut (13) is arranged at the lower end of the second threaded connection column (14), the second clamping locking nut (13) is located on the lower side of the second valve core fixing clamping mating surface (15), and the valve core is placed in a positive fixed position between the second clamping locking nut (13) and the second valve core fixing clamping mating surface (15); The first support plate (2) is also connected to a column, and the second support plate (12) is connected to the column.

3. The valve core and valve seat grinding tool of a regulating valve according to claim 2, characterized in that: The second support plate (12) is located on the upper side of the first support plate (2).

4. A valve core and valve seat grinding tool for a regulating valve as claimed in claim 1 or 2, characterized in that: The connection hole (22) of the valve core is a through hole for connecting and assembling the valve stem.

5. The valve core and valve seat grinding tool for a regulating valve according to claim 1, characterized in that: The first threaded connection column (4) has a first guide portion, the first guide portion is in guiding cooperation with the connection hole (22), and the first guide portion is located at the lower side of the first clamping locking nut (3).

6. The valve core and valve seat grinding tool for a regulating valve according to claim 2, characterized in that: The second threaded connection column (14) has a second guide portion, the second guide portion is in guiding cooperation with the connection hole (22), and the second guide portion is located on the upper side of the second clamping locking nut (13).

7. A valve core and valve seat grinding tool for a regulating valve, comprising a second support plate (12), a second clamping locking nut (13), and a second threaded connection column (14) for matching and sleeved with a connection hole (22) of the valve core, characterized in that: A second valve core fixing clamping mating surface (15) is provided on the second support plate (12), and the second valve core fixing clamping mating surface (15) is located at the lower side of the second support plate (12). The second threaded connection column (14) is connected to the second support plate (12), and the second threaded connection column (14) is vertically arranged. A second clamping locking nut (13) is arranged at the lower end of the second threaded connection column (14), and the second clamping locking nut (13) is located at the lower side of the second valve core fixing clamping mating surface (15). The valve core is in a positive fixed position between the second clamping locking nut (13) and the second valve core fixing clamping mating surface (15).

8. The valve core and valve seat grinding tool for a regulating valve according to claim 7, characterized in that: The connection hole (22) of the valve core is a through hole for connecting and assembling the valve stem.

9. The valve core and valve seat grinding tool for a regulating valve according to claim 7, characterized in that: The second threaded connection column (14) has a second guide portion, the second guide portion is in guiding cooperation with the connection hole (22), and the second guide portion is located on the upper side of the second clamping locking nut (13).

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