Ball core machining tool of eccentric ball valve

Abstract

The utility model discloses a ball core processing tool of eccentric ball valve, including base, locating seat and pull rod, the number of locating seat is two and is fixed on the base, the locating seat is equipped with the through hole, the through hole of two locating seat is equipped with left locating sleeve and right locating sleeve respectively, pull rod passes through the left locating sleeve and right locating sleeve simultaneously, and the left locating sleeve and right locating sleeve are equipped with the left locating sleeve and right locating sleeve respectively. According to the embodiment of the utility model, the left positioning sleeve and the right positioning sleeve which are matched with each other can be replaced according to the shape of a ball core to be processed, so that better fixation is realized, and the positioning precision is ensured. The positioning device is convenient to disassemble and assemble, and the left positioning sleeve and the right positioning sleeve are convenient to replace when being abraded after being disassembled and assembled for multiple times, so that the positioning device still has good positioning accuracy after being disassembled and assembled for multiple times.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the ball valve processing technical field, and specifically relates to a ball core machining tool of eccentric ball valve. BACKGROUND

[0002] Ball valve is a common valve type, and mainly plays the role of cutting off, distributing and changing the flow direction of medium in a pipeline. Its closing member is a ball, and the ball rotates around the center line of the valve body to open or close. As a new type of ball valve, the rotation center of the ball core of the eccentric ball valve does not coincide with the axis of the valve rod. Compared with the ordinary O-shaped ball valve, the eccentric ball valve can reduce the wear of the valve seat sealing surface during opening and closing, and improve the service life of the valve. At the same time, the back part of the ball core is designed with a flow guide wing, which is beneficial to the stable flow of fluid. In order to meet the VI level leakage level requirement of the valve, higher requirements are also put forward for the machining precision of the ball core.

[0003] Therefore, for the ball core machining tool of the eccentric ball valve, the following requirements need to be met: (1) the positioning accuracy of the workpiece should be guaranteed, and the axial eccentricity size of the ball core should be guaranteed by the tool, and there should be a measurement reference for the radial eccentricity size on the tool. (2) the ball core tool should be easy to disassemble and assemble, and can meet the machining requirements of different diameters of the ball core, and finally the positioning accuracy of the tool should still be good after being disassembled and assembled for many times. However, the existing ball valve machining tool cannot meet the above requirements. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a ball core machining tool of eccentric ball valve, which has higher machining precision than the existing ball core machining tool.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme: a ball core machining tool of eccentric ball valve, including base, locating seat and pull rod, the locating seat has two and is fixed on the base, the locating seat is equipped with the hole, the hole in two locating seat is equipped with left locating sleeve and right locating sleeve respectively, the pull rod is equipped with the fixed nut with the pull rod thread cooperation simultaneously in left locating sleeve and right locating sleeve, one end of pull rod is equipped with the swelling end, the other end is equipped with the fixed nut.

[0006] By adopting the above scheme, when machining is needed, the left locating sleeve and the right locating sleeve are respectively placed in the through holes of the two locating seats, the ball core to be machined is placed between the two locating seats, then the pull rod is sequentially passed through the left locating sleeve, the ball core to be machined and the right locating sleeve, the fixed nut is then sleeved on the pull rod and tightened, until the fixed nut and the end face of the right locating sleeve away from the left locating sleeve form a limit, and the swelling end and the end face of the left locating sleeve away from the right locating sleeve form a limit, so that the ball core to be machined can be fixed to the utility model.

[0007] The embodiment can replace the left positioning sleeve and the right positioning sleeve according to the shape of the ball core to be machined, so that better fixing is achieved, and the positioning accuracy is ensured.

[0008] As a further setting of the utility model, the left positioning sleeve is provided with a left stepped surface on the outer wall, the left stepped surface comprises a left end surface and a left outer wall in a cylindrical shape, the right positioning sleeve is provided with a right stepped surface on the outer wall, the right stepped surface comprises a right end surface and a right outer wall in a cylindrical shape, the left end surface and the right end surface are oppositely arranged and parallel to each other, and the distance from the left end surface to the right end surface is less than or equal to the minimum distance between the through holes of the two positioning seats.

[0009] By adopting the above scheme, the left end surface and the right end surface serve as the radial positioning reference of the ball core, and the left outer wall and the right outer wall serve as the axial positioning reference of the ball core, so that the left positioning sleeve and the right positioning sleeve can better fix the ball core, and the distance from the left end surface to the right end surface can prevent the positioning seat from being directly in contact with the ball core to be machined and from being abraded.

[0010] As a further setting of the utility model, the left positioning sleeve is provided with a left stepped surface on the outer wall, the left stepped surface comprises a left end surface and a left outer wall in a cylindrical shape, the right positioning sleeve is provided with a right stepped surface on the outer wall, the right stepped surface comprises a right end surface and a right outer wall in a cylindrical shape, the left end surface and the right end surface are oppositely arranged and parallel to each other, and the distance from the left end surface to the right end surface is less than or equal to the minimum distance between the through holes of the two positioning seats.

[0011] By adopting the above scheme, the left positioning sleeve and the right positioning sleeve are conveniently assembled to the positioning seat, and the left positioning sleeve and the right positioning sleeve can better fix the ball core.

[0012] As a further setting of the utility model, along the radial direction of the pull rod, the two sides of the pull rod are respectively provided with an adjusting column and a pressing column which can move along the axial direction of the pull rod, and the adjusting column and the pressing column are both protruded away from the base.

[0013] By adopting the above scheme, after the ball core is fixed by the pull rod, the position of the ball core may deviate from the predetermined position along the circumferential direction of the pull rod, the pressing column and the adjusting column are adjusted to move along the axial direction of the pull rod, so that force is applied to the ball core, the ball core is rotated to the predetermined position along the axial line of the pull rod, and the ball core is kept fixed under the support of the pressing column and the adjusting column.

[0014] As a further setting of the utility model, a limiting end one is arranged between the two positioning seats, the maximum distance from the limiting end one to the base is less than the distance from the axial line of the pull rod to the base, and the adjusting column is arranged on the side of the limiting end one away from the pull rod.

[0015] Adopting the above scheme, the limiting end one has a certain limiting effect, the ball core is conveniently fixed to the utility model, and the adjusting column and the pressing column are conveniently adjusted.

[0016] As a further setting of the utility model, limiting end two is arranged between the two positioning seats, the maximum distance from the limiting end two to the base is greater than the distance from the pull rod axis to the base, and the pressing column is arranged on the limiting end two.

[0017] Adopting the above scheme, the limiting end two has a certain limiting effect, the ball core is conveniently fixed to the utility model, and the adjusting column and the pressing column are conveniently adjusted.

[0018] As a further setting of the utility model, the limiting end one has two and is arranged on a positioning seat respectively, and a gap exists between the two limiting end ones, and the limiting end two has two and is arranged on a positioning seat respectively, and a gap exists between the two limiting end twos.

[0019] Adopting the above scheme, the utility model is conveniently processed and assembled.

[0020] As a further setting of the utility model, the adjusting column is an outer hexagonal bolt, and the adjusting column is threadedly matched with the base.

[0021] Adopting the above scheme, adjustment is facilitated.

[0022] As a further setting of the utility model, the base is in a cylindrical shape, a convex end protruding away from the positioning seat is arranged on the end face of the base away from the positioning seat, the convex end is in a cylindrical shape and is coaxially arranged with the base, the radius of the convex end is smaller than the radius of the base, a through hole is arranged on the base and penetrates the convex end, and the through hole is coaxially arranged with the base.

[0023] Adopting the above scheme, after the positioning seat and the base are fixed, the three-jaw (or four-jaw) chuck of the machine tool can fix the utility model and the machine tool through the above design.

[0024] The utility model will be further described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] ATTACHED Figure 1 It is the whole schematic view of the embodiment of the utility model;

[0026] ATTACHED Figure 2 It is the side view of the embodiment of the utility model;

[0027] ATTACHED Figure 3 It is the A-A sectional view of the attached Figure 2

[0028] ​Base 1, convex end 11, through hole 12, positioning seat 2, through hole 21, limiting end one 22, limiting end two 23, pull rod 3, bulging end 31, left positioning sleeve 4, left end face 41, left outer wall 42, left abutting end 43, right positioning sleeve 5, right end face 51, right outer wall 52, right abutting end 53, fixing nut 6, adjusting column 7, pressing column 8. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that, unless otherwise specified, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like in the description are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" appear only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] The specific embodiments of the present application are shown in the drawings.

[0032] A ball core machining tool for an eccentric ball valve, comprising a base 1, a positioning seat 2 and a pull rod 3, the positioning seat 2 has two and is fixed on the base 1, the positioning seat 2 is provided with a through hole 21, the through holes 21 of the two positioning seats 2 are respectively provided with a left positioning sleeve 4 and a right positioning sleeve 5, the pull rod 3 is simultaneously provided through the left positioning sleeve 4 and the right positioning sleeve 5, one end of the pull rod 3 is provided with a bulging end 31, and the other end is provided with a fixing nut 6 which is threadedly matched with the pull rod 3.

[0033] When machining is needed, the left positioning sleeve 4 and the right positioning sleeve 5 are respectively placed in the through holes 21 of the two positioning seats 2, the ball core to be machined is placed between the two positioning seats 2, the pull rod 3 is sequentially passed through the left positioning sleeve 4, the ball core to be machined and the right positioning sleeve 5, the fixing nut 6 is then sleeved on the pull rod 3 and tightened, until the fixing nut 6 and the end face of the right positioning sleeve 5 away from the left positioning sleeve 4 form a limit, and the bulging end 31 and the end face of the left positioning sleeve 4 away from the right positioning sleeve 5 form a limit, so that the ball core to be machined can be fixed in the present embodiment.

[0034] The embodiment can replace the left positioning sleeve 4 and the right positioning sleeve 5 according to the shape of the ball core to be processed, so that the embodiment can process ball cores with different eccentric directions, achieve better fixing, and ensure positioning accuracy. The left positioning sleeve 4 and the right positioning sleeve 5 are convenient to disassemble and reassemble, and can be replaced when they are worn after multiple disassembly and reassembly, so that the new type still has good positioning accuracy after multiple disassembly and reassembly.

[0035] The left positioning sleeve 4 is provided with a left stepped surface on the outer wall, the left stepped surface includes a left end surface 41 and a cylindrical left outer wall 42, the right positioning sleeve 5 is provided with a right stepped surface on the outer wall, the right stepped surface includes a right end surface 51 and a cylindrical right outer wall 52, and the left end surface 41 and the right end surface 51 are oppositely arranged and parallel to each other. The left end surface 41 and the right end surface 51 serve as a radial positioning reference for the ball core, and the left outer wall 42 and the right outer wall 52 serve as an axial positioning reference for the ball core, so that the left positioning sleeve 4 and the right positioning sleeve 5 can better fix the ball core. In the embodiment, the distance from the left end surface 41 to the right end surface 51 is less than the minimum distance between the through holes 21 of the two positioning seats 2, which can prevent the positioning seats 2 from being directly in contact with the ball core to be processed and prevent the positioning seats 2 from being worn.

[0036] The left positioning sleeve 4 is provided with a left stepped surface on the outer wall, the left stepped surface includes a left end surface 41 and a cylindrical left outer wall 42, the right positioning sleeve 5 is provided with a right stepped surface on the outer wall, the right stepped surface includes a right end surface 51 and a cylindrical right outer wall 52, and the left end surface 41 and the right end surface 51 are oppositely arranged and parallel to each other. The left end surface 41 and the right end surface 51 serve as a radial positioning reference for the ball core, and the left outer wall 42 and the right outer wall 52 serve as an axial positioning reference for the ball core, so that the left positioning sleeve 4 and the right positioning sleeve 5 can better fix the ball core. In the embodiment, the distance from the left end surface 41 to the right end surface 51 is less than the minimum distance between the through holes 21 of the two positioning seats 2, which can prevent the positioning seats 2 from being directly in contact with the ball core to be processed and prevent the positioning seats 2 from being worn.

[0037] Along the radial direction of the pull rod 3, the two sides of the pull rod 3 are respectively provided with an adjusting column 7 and a pressing column 8 which can move along the axial direction of the pull rod 3, the adjusting column 7 and the pressing column 8 are protruded away from the base 1, and in the embodiment. After the ball core is fixed by the pull rod 3, the position of the ball core may have a certain deviation from the predetermined position along the circumferential direction of the pull rod 3. By adjusting the pressing column 8 and the adjusting column 7, the pressing column 8 and the adjusting column 7 can be moved along the axial direction, so that the ball core can be rotated along the axis of the pull rod 3 to the predetermined position and kept fixed under the support of the pressing column 8 and the adjusting column 7. In the embodiment, the adjusting column 7 is an external hexagonal bolt, and the adjusting column 7 is threadedly connected with the base 1.

[0038] The positioning seat 2 is provided with a limiting end one 22 extending to another positioning seat 2 and a limiting end two 23 extending to another positioning seat 2, the maximum distance from the limiting end one 22 to the base 1 is less than the distance from the axis of the pull rod 3 to the base 1, and the adjusting column 7 is arranged on the side of the limiting end one 22 away from the pull rod 3. The maximum distance from the limiting end two 23 to the base 1 is greater than the distance from the axis of the pull rod 3 to the base 1, the pressing column 8 is arranged on the limiting end two 23, and the maximum distance from the pressing column 8 to the base 1 is greater than the maximum distance from the limiting end two 23 to the base 1. The limiting end one 22 and the limiting end two 23 have a limiting effect, which facilitates the fixing of the ball core to the embodiment, and facilitates the adjustment of the adjusting column 7 and the pressing column 8.

[0039] There is a gap between the two limiting end ones 22, and there is a gap between the two limiting end twos 23. This facilitates the processing and assembly of the embodiment.

[0040] The base 1 is in a cylindrical shape, and the end face of the base 1 away from the positioning seat 2 is provided with a protruding end 11 protruding away from the positioning seat 2, the protruding end 11 is in a cylindrical shape and coaxially arranged with the base 1, the radius of the protruding end 11 is smaller than the radius of the base 1, and the base 1 is provided with a through hole 12 penetrating through the protruding end 11, and the through hole 12 is coaxially arranged with the base 1. After the positioning seat 2 is connected and fixed with the base 1, the three-jaw (or four-jaw) chuck of the machine tool can fix the embodiment with the machine tool through the above design.

[0041] The utility model is not limited to the above specific embodiments, and those skilled in the art can implement the utility model according to the disclosed content of the utility model, or any design structure and idea adopting the utility model, simple changes or changes, all fall within the protection scope of the utility model.

Claims

1. A ball core machining tool for an eccentric ball valve, characterized by: The utility model provides a positioning device, including base, positioning seat and pull rod, the positioning seat has two and all is fixed on the base, be equipped with the hole of passing on the positioning seat, the hole of passing of two positioning seat is equipped with left positioning sleeve and right positioning sleeve respectively, the pull rod is equipped with the fixed nut of thread cooperation with the pull rod simultaneously in left positioning sleeve and right positioning sleeve, one end of pull rod is equipped with the swelling end, the other end is equipped with.

2. The eccentric ball valve ball core machining tooling of claim 1, wherein: The outer wall of the left positioning sleeve is provided with a left step surface, which includes a left end surface and a cylindrical left outer wall. The outer wall of the right positioning sleeve is provided with a right step surface, which includes a right end surface and a cylindrical right outer wall. The left end surface and the right end surface are oppositely arranged and parallel to each other. The distance from the left end surface to the right end surface is less than or equal to the minimum distance between the through holes of the two positioning seats.

3. The eccentric ball valve ball core machining tooling of claim 2, wherein: The end of the left positioning sleeve away from the right positioning sleeve is provided with a left abutting end, and the end of the right positioning sleeve away from the left positioning sleeve is provided with a right abutting end. The left abutting end and the right abutting end form a limit with the two outer walls of the two positioning seats respectively.

4. The eccentric ball valve ball core machining tooling of claim 3, wherein: Along the radial direction of the pull rod, two sides of the pull rod are respectively provided with an adjusting column and a pressing column which can move axially along the axis of the pull rod. The adjusting column and the pressing column are protruded away from the base.

5. The eccentric ball valve ball core machining tooling of claim 4, wherein: A limiting end one is arranged between the two positioning seats. The maximum distance from the limiting end one to the base is less than the distance from the axis of the pull rod to the base. The adjusting column is arranged on the side of the limiting end one away from the pull rod.

6. The eccentric ball valve ball core machining tooling of claim 5, wherein: A limiting end two is arranged between the two positioning seats. The maximum distance from the limiting end two to the base is greater than the distance from the axis of the pull rod to the base. The pressing column is arranged on the limiting end two.

7. The eccentric ball valve ball core machining tooling of claim 6, wherein: The limiting end one has two and is arranged on one positioning seat respectively. There is a gap between the two limiting ends one. The limiting end two has two and is arranged on one positioning seat respectively. There is a gap between the two limiting ends two.

8. The eccentric ball valve ball core machining tooling of claim 7, wherein: The adjusting column is an external hexagonal bolt. The adjusting column is threadedly connected with the base.

9. The ball core machining tooling for an eccentric ball valve according to claim 2 or 3 or 7 or 8, wherein: The base is in a cylindrical shape. The end surface of the base away from the positioning seat is provided with a protruding end protruding away from the positioning seat. The protruding end is in a cylindrical shape and coaxially arranged with the base. The radius of the protruding end is less than the radius of the base. The base is provided with a through hole penetrating the protruding end. The through hole is coaxially arranged with the base.

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