A valve seat grinding jig

Abstract

The utility model provides a kind of valve seat's grinding fixture, belong to machining fixture field, including support;Shaft rotation;First component and second component are respectively arranged in the both ends of shaft;Detachable metal seal ring is loaded on first component, and detachable valve seat is loaded on second component, metal seal ring and valve seat are coaxially arranged with shaft, first component and second component are synchronous shaft rotation with shaft, operator carries out grinding to the edge of synchronous shaft rotation metal seal ring and valve seat.The utility model is set in the both ends of shaft respectively and is loaded metal seal ring and valve seat with clamping component, is rotated to carry out grinding by shaft simultaneously driving both, can observe the grinding state of both in the grinding process of both, and judge whether the grinding result of both can be mutually matched cooperation, help to improve the sealing surface of good sealing formed after valve seat and metal seal ring assembly, improve the sealing tightness of valve body.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and in particular to a grinding fixture for valve seats. Background Technology

[0002] The valve seat is a key component in industrial valves that supports the valve core in the fully closed position. It forms a sealing pair with the valve core to achieve fluid shut-off. During valve assembly, the sealing surfaces of the valve seat and valve core need to be ground to ensure the valve's sealing performance. Chinese patent CN217648178U discloses a grinding fixture for a helicopter solenoid valve seat, which fixes the valve seat on a jig for grinding the sealing surface.

[0003] Sometimes, a metal sealing ring is needed inside the valve seat to improve its sealing performance. Therefore, the sealing surface of the metal sealing ring also needs to be ground to ensure a good seal and allow for a tight assembly. However, current tooling fixtures are generally used for clamping and fixing valve seats, and the sealing ring and valve seat need to be ground separately. This makes it difficult for operators to accurately determine whether the grinding results of the sealing ring and valve seat achieve a good working relationship. Utility Model Content

[0004] In view of this, this utility model proposes a valve seat grinding fixture to solve the problem that the current method of grinding the sealing ring and valve seat separately makes it difficult for operators to accurately grasp the grinding results of the sealing ring and valve seat to form a good synergistic relationship.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a grinding fixture for a valve seat, including a bracket; a rotating shaft, horizontally mounted on the bracket and axially rotating; a first component, mounted at one end of the rotating shaft; and a second component, mounted at the other end of the rotating shaft; wherein, a metal sealing ring is detachably mounted on the first component, and a valve seat is detachably mounted on the second component. The metal sealing ring and the valve seat are coaxially mounted with the rotating shaft. The first component and the second component rotate synchronously with the rotating shaft, and the operator grinds the edges of the synchronously rotating metal sealing ring and the valve seat.

[0006] Based on the above technical solutions, preferably, it also includes a drive mechanism, which is mounted on the bracket and located below the rotating shaft; a drive wheel, which is connected to the output end of the drive mechanism; and a driven wheel, which is sleeved on the rotating shaft and drives the rotating shaft to rotate synchronously; wherein, the drive mechanism drives the drive wheel to rotate; and the drive wheel and the driven wheel are connected by belt drive.

[0007] Even more preferably, the driven wheel has a larger diameter than the driving wheel.

[0008] Based on the above technical solutions, preferably, the first component includes a first base disposed at the end of the rotating shaft; at least three sliders disposed on the end face of the first base; wherein, the at least three sliders move radially relative to the first base along the rotating shaft, and the at least three sliders simultaneously abut against the inner contour edge of the metal sealing ring, and load the metal sealing ring onto the first component.

[0009] Even more preferably, the part of the slider that contacts the inner edge of the metal sealing ring is an arc surface.

[0010] Based on the above technical solutions, preferably, the second component includes a second base, which is disposed at the end of the rotating shaft; at least three limiting blocks are evenly distributed on the second base around the axial direction of the rotating shaft; wherein, each limiting block has a number of elongated holes along the radial direction of the rotating shaft; and the valve seat has a number of bolt holes around its center, and fastening bolts are used to pass through the bolt holes and elongated holes to load the valve seat onto the second component.

[0011] More preferably, the valve seat is connected to at least three limit blocks simultaneously by fastening bolts, and the center of the valve seat coincides with the central axis of the rotating shaft.

[0012] Based on the above technical solutions, preferably, the support is a trapezoidal frame structure, and the rotating shaft is mounted on the top of the trapezoidal frame structure.

[0013] A further preferred embodiment includes a dust cover, which is mounted on top of the bracket and covers the rotating shaft.

[0014] Based on the above technical solutions, preferably, elastic buffer feet are provided at the four corners of the bottom of the bracket.

[0015] The valve seat grinding fixture of this utility model has the following advantages over the prior art: (1) The present invention sets clamping components at both ends of the rotating shaft to load the metal sealing ring and the valve seat. The rotating shaft drives the two to rotate simultaneously for grinding. The grinding status of the two can be observed in real time during the grinding process, and it can be judged whether the grinding results of the two can cooperate with each other. This helps to improve the sealing surface formed by the valve seat and the metal sealing ring after assembly, and improves the sealing tightness of the valve body.

[0016] (2) This utility model clamps and fixes the metal sealing ring by simultaneously pressing against the inside of the metal sealing ring with multiple sliders, so that its center coincides with the center of the rotating shaft. At the same time, the valve seat is clamped and fixed by simultaneously fastening the annular surface of the valve seat with the limiting block, so that the center of the valve seat also coincides with the center of the rotating shaft. Thus, the metal sealing ring and the valve seat are driven by the same rotating shaft to perform shaft rotation grinding, and the rotation axis of the two will not deviate from their respective centers, ensuring a good grinding effect.

[0017] (3) The bracket of this utility model adopts a trapezoidal structure with a smaller top and a larger bottom, and the four corners of the bottom of the bracket are provided with elastic buffering feet to ensure the vibration resistance stability of the grinding fixture during the grinding process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the grinding fixture of this utility model; Figure 2 This is a partial perspective view of the grinding fixture of this utility model; Figure 3 This is a perspective view of the first component of this utility model; Figure 4 This is a perspective view of the second component of this utility model.

[0020] In the diagram: 1. Bracket; 11. Support leg; 2. Rotating shaft; 3. First component; 30. Metal sealing ring; 31. First base; 32. Slider; 4. Second component; 40. Valve seat; 41. Second base; 42. Limiting block; 401. Elongated hole; 402. Bolt hole; 5. Drive mechanism; 6. Driving wheel; 7. Driven wheel; 8. Dust cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0023] 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", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0027] like Figure 1 As shown, combined with Figure 2 The present invention provides a grinding fixture for a valve seat, comprising a bracket 1, a rotating shaft 2, a first component 3, and a second component 4.

[0028] The bracket 1 is set on a horizontal ground. The bracket 1 is a frame structure and serves as the support structure for the entire fixture.

[0029] The rotating shaft 2 is horizontally mounted on the bracket 1 and can rotate axially. A bushing structure can be symmetrically mounted on the top of the bracket 2. Both ends of the rotating shaft 2 are inserted into the bushing structure, and a bearing is installed between the rotating shaft 2 and the bushing structure.

[0030] The first component 3 is located at one end of the rotating shaft 2; a metal sealing ring 30 is detachably mounted on the first component 3; the second component 4 is located at the other end of the rotating shaft 2, and a valve seat 40 is detachably mounted on the second component 4; the metal sealing ring 30 and the valve seat 40 are coaxially mounted with the rotating shaft 2, and the first component 3 and the second component 4 rotate synchronously with the rotating shaft 2. The operator grinds the edges of the synchronously rotating metal sealing ring 30 and the valve seat 40. By rotating the same rotating shaft 2, the first component 3 and the second component 4 are simultaneously driven to rotate synchronously, so that the metal sealing ring 30 and the valve seat 40 rotate coaxially and synchronously; in this way, when grinding the two separately, their rotation speed and rotation frequency remain consistent, thus ensuring that the grinding effect of the two is basically consistent, and the grinding condition of the metal sealing ring 30 and the valve seat 40 can be observed back and forth during the grinding process, so as to grasp and judge whether the grinding results of the two can effectively cooperate.

[0031] exist Figure 2 In one alternative embodiment shown, in order to drive the rotating shaft 2 to rotate, a drive mechanism 5, a driving wheel 6, and a driven wheel 7 are also included.

[0032] The drive mechanism 5 can be a combination of a rotary motor and a geared motor, both of which are housed inside the bracket 1 of the frame structure and located below the rotating shaft 2. The drive mechanism 5 is used to provide the driving force to rotate the drive wheel 6.

[0033] The driving wheel 6 is connected to the output end of the drive mechanism 5; the driven wheel 7 is sleeved on the rotating shaft 2 and drives the rotating shaft 2 to rotate synchronously; the driving wheel 6 and the driven wheel 7 are connected by belt drive. Specifically, belt grooves are opened on the wheel surfaces of the driving wheel 6 and the driven wheel 7, and the belt is locked in the belt grooves of the two and will not disengage from the driving wheel 6 or the driven wheel 7.

[0034] exist Figure 2 In one alternative embodiment shown, the diameter of the driven wheel 7 is larger than that of the driving wheel 6. Therefore, the driving wheel 6 can drive the driven wheel 7 to rotate more times with fewer rotations, thereby causing the driven wheel 7 and the rotating shaft 2 fitted therein to rotate at a high speed, so as to grind the metal sealing ring 30 and the valve seat 40.

[0035] exist Figure 3 In one alternative embodiment shown, the first component 3 includes a first base 31 and a slider 32.

[0036] The first base 31 is fastened to the end of the rotating shaft 2 by fastening bolts. Several sliding grooves are formed around the end face of the first base 31.

[0037] At least three sliders 32 are disposed on the end face of the first base 31. The sliders 32 are engaged in the slide groove and move along the slide groove, so that the at least three sliders 32 can move radially relative to the first base 31 along the rotating shaft 2. Before grinding the metal sealing ring 30, by manually moving each slider 32, so that at least three sliders 32 simultaneously abut against the inner contour edge of the metal sealing ring 30, the metal sealing ring 30 can be loaded onto the first component 3, preventing it from detaching from the first component 3 during the grinding process; and at this time, the center of the metal sealing ring 30 coincides with the central axis of the rotating shaft 2, ensuring that when the rotating shaft 2 rotates, the metal sealing ring 30 also rotates around its own center.

[0038] exist Figure 3 In one optional embodiment shown, the part of the slider 32 that contacts the inner edge of the metal sealing ring 30 is an arc surface, so that the slider 32 and the inner edge of the metal sealing ring 30 form an effective surface contact, preventing the metal sealing ring 30 from detaching from the first component 3 during the grinding process.

[0039] exist Figure 4 In one alternative embodiment shown, the second component 4 includes a second base 41 and a limiting block 42.

[0040] The second base 41 is also fastened to the end of the rotating shaft 2 by fastening bolts.

[0041] At least three limiting blocks 42 are evenly distributed around the second base 41 along the axial direction of the rotating shaft 2. Each limiting block 42 is elongated, with one end fixed to the second base 41 by a fastening bolt, and the other end extending outward along the radial direction of the rotating shaft 2. Each limiting block 42 has several elongated holes 401 along the radial direction of the rotating shaft 2, and the extension direction of the elongated holes 401 is consistent with the radial direction of the rotating shaft 2. The valve seat 40 has several bolt holes 402 around its center. The valve seat 40 is loaded onto the second assembly 4 by fastening bolts passing through the bolt holes 402 and the elongated holes 401, preventing the valve seat 40 from detaching from the second assembly 4 during the grinding process. At the same time, since the elongated holes 401 are relatively long and extend radially along the rotating shaft 2, valve seats 40 of various diameters and lengths can be mounted on the second assembly 4.

[0042] exist Figure 4 In one optional embodiment shown, the valve seat 40 is connected to at least three limit blocks 42 simultaneously by fastening bolts. The center of the valve seat 40 coincides with the central axis of the rotating shaft 2, ensuring that when the rotating shaft 2 rotates, the valve seat 40 also rotates around its own center.

[0043] exist Figure 1 In one optional embodiment shown, the support 1 is a trapezoidal frame structure, and the rotating shaft 2 is mounted on top of the trapezoidal frame structure. The support 1 can be assembled from aluminum alloy materials, which has low material costs and is easy to manufacture.

[0044] exist Figure 1 In one optional embodiment shown, a dust cover 8 is also included. The dust cover 8 is disposed on the top of the bracket 1 and covers the rotating shaft 2. This helps to prevent a large amount of dust generated during the grinding process from adhering to the rotating shaft 2 and hindering the rotation of the rotating shaft 2.

[0045] exist Figure 1 In one optional embodiment shown, the four corners of the bottom of the bracket 1 are provided with elastic buffer feet 11, which can alleviate the vibration of the grinding fixture during the grinding process and improve the grinding quality.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grinding fixture for valve seats, characterized in that, include: Support (1); The rotating shaft (2) is horizontally mounted on the bracket (1) and rotates axially; The first component (3) is disposed at one end of the rotating shaft (2); The second component (4) is disposed at the other end of the rotating shaft (2); The first component (3) is detachably equipped with a metal sealing ring (30), and the second component (4) is detachably equipped with a valve seat (40). The metal sealing ring (30) and the valve seat (40) are coaxially arranged with the rotating shaft (2). The first component (3) and the second component (4) rotate synchronously with the rotating shaft (2). The operator grinds the edges of the synchronously rotating metal sealing ring (30) and the valve seat (40).

2. The valve seat grinding fixture according to claim 1, characterized in that, Also includes: The drive mechanism (5) is mounted on the bracket (1) and located below the rotating shaft (2); The drive wheel (6) is connected to the output end of the drive mechanism (5); Driven wheel (7) is sleeved on the rotating shaft (2) and drives the rotating shaft (2) to rotate synchronously; The drive mechanism (5) drives the drive wheel (6) to rotate; the drive wheel (6) and the driven wheel (7) are connected by belt drive.

3. The grinding fixture for a valve seat according to claim 2, characterized in that: The diameter of the driven wheel (7) is greater than that of the driving wheel (6).

4. The valve seat grinding fixture according to claim 1, characterized in that: The first component (3) includes, The first base (31) is disposed at the end of the rotating shaft (2); At least three sliders (32) are disposed on the end face of the first base (31); At least three of the sliders (32) move radially relative to the first base (31) along the pivot (2), and at least three of the sliders (32) simultaneously abut against the inner contour edge of the metal seal ring (30) and load the metal seal ring (30) onto the first component (3).

5. A grinding fixture for a valve seat according to claim 4, characterized in that: The part where the slider (32) contacts the inner edge of the metal sealing ring (30) is an arc surface.

6. The grinding fixture for a valve seat according to claim 1, characterized in that: The second component (4) includes, The second base (41) is disposed at the end of the rotating shaft (2); At least three limiting blocks (42) are evenly distributed on the second base (41) around the axis of the rotating shaft (2); Each of the limiting blocks (42) has a plurality of elongated holes (401) radially along the rotating shaft (2); the valve seat (40) has a plurality of bolt holes (402) around its center. The valve seat (40) is loaded onto the second component (4) by passing fastening bolts through the bolt holes (402) and the elongated holes (401).

7. A grinding fixture for a valve seat according to claim 6, characterized in that: The valve seat (40) is connected to at least three limit blocks (42) simultaneously by fastening bolts, and the center of the valve seat (40) coincides with the central axis of the rotating shaft (2).

8. The grinding fixture for a valve seat according to claim 1, characterized in that: The bracket (1) is a trapezoidal frame structure, and the rotating shaft (2) is mounted on the top of the trapezoidal frame structure.

9. A grinding fixture for a valve seat according to claim 8, characterized in that, Also includes: A dust cover (8) is installed on top of the bracket (1) and covers the rotating shaft (2).

10. A grinding fixture for a valve seat according to claim 1, characterized in that: The bracket (1) is provided with elastic buffer feet (11) at the four corners of its bottom.

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