CN209998970U - Valve rod grinding device - Google Patents
Valve rod grinding device Download PDFInfo
- Publication number
- CN209998970U CN209998970U CN201920705154.9U CN201920705154U CN209998970U CN 209998970 U CN209998970 U CN 209998970U CN 201920705154 U CN201920705154 U CN 201920705154U CN 209998970 U CN209998970 U CN 209998970U
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- Prior art keywords
- hole
- pipe
- taper
- sleeve
- valve rod
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- 230000008602 contraction Effects 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 abstract description 9
- 125000003003 spiro group Chemical group 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 230000010485 coping Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model discloses an valve rod grinding device is including the taper pipe and the sleeve pipe of butt joint, the bell mouth has been seted up along the axial to the taper pipe, the sleeve pipe is seted up threaded hole along the axial, the bell mouth is linked together with the screw hole, the internal diameter of bell mouth reduces along the direction of keeping away from the screw hole gradually, butt joint's second taper pipe and cylinder pipe, side of cylinder pipe dorsad on the second taper pipe offers the centre gripping hole that is used for the centre gripping valve rod along the axial, the second taper pipe extends into the sleeve pipe from the screw hole and is intraductal until external screw thread and screw thread hole spiro union, the outer wall laminating of second taper pipe sets up on the inner wall of bell mouth, and the tapering of taper hole is the same with the tapering of second taper pipe, set up the shrink seam of bar along the axial on the outer wall of second taper pipe.
Description
Technical Field
The utility model relates to a valve rod technical field especially relates to kinds of valve rod grinding devices.
Background
The valve rod is an important part of the valve and is used for transmission, an actuating mechanism is connected, and the valve core is directly driven to move or rotate under the actuating mechanism so as to realize the opening degree of the valve .
In the prior art, the valve rod is fixed by extending the end of the rod body back to the sealing conical surface into a clamping device, and then the sealing conical surface is polished by a grinding wheel in the process of realizing the invention creation, the inventor finds that the rod body is clamped and fixed by the clamping device, the clamping device clamps the valve rod by a mode that a plurality of contacts are abutted on the rod body, the stability of the clamped valve rod is poor, and the clamped valve rod is easy to incline or fall off, and in order to avoid the position interference of the grinding wheel and the clamping device, the depth of the rod body extending into the clamping device is small and is about 10mm, so that a gap is left between the sealing conical surface and the clamping device, the part of the rod body positioned at the outer side of the clamping device is longer, the stability is poor, the grinding is easy to shake, the problem of eccentricity exists when the sealing conical surface passes through the grinding wheel, and the defective rate after polishing is higher.
Therefore, it is necessary to solve the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides an kinds of valve rod grinding device to solve the problem that exists among the prior art, increase the body of rod by the stability behind the centre gripping, avoid taking place to rock the eccentric problem that leads to because of the valve rod when sealed conical surface coping, reduce the defective percentage after the coping.
The utility model provides a valve rod grinding device, include taper pipes and the sleeve pipe of joining mutually along the axial, the external diameter of taper pipe is along keeping away from the sheathed tube direction reduces gradually, the bell mouth has been seted up along the axial to the taper pipe, the sleeve pipe is seted up threaded hole along the axial, the bell mouth with the screw hole be linked together just the central axis of bell mouth with the central axis collineation setting of screw hole, the internal diameter of bell mouth is along keeping away from the direction of screw hole reduces gradually, along axial butt joint's second taper pipe and cylinder pipe, the external diameter of second taper pipe is along keeping away from the direction of cylinder pipe reduces gradually, back to on the second taper pipe side of cylinder pipe offers the centre gripping hole that is used for centre gripping valve rod along the axial, offer on the axial of cylinder pipe with the external screw thread of screw hole adaptation, the second taper pipe follow the screw hole extends into the cover intraductal until the external screw thread with the screw thread hole spiro union, the laminating of outer wall of second taper pipe sets up on the inner wall of bell mouth, just the tapering hole with the tapering taper pipe taper of taper pipe is the same, the strip seam is offered along the axial.
Optionally, the number of the contraction joints is multiple, and the multiple contraction joints are uniformly distributed along the circumferential direction of the second conical pipe.
Optionally, a strip-shaped mounting groove is formed in the axial surface of the sleeve, and the mounting groove extends to the end surface of the sleeve, which faces away from the th conical tube, along the axis of the sleeve.
Optionally, the number of the mounting grooves is four, and the four mounting grooves are uniformly distributed along the circumferential direction of the sleeve.
Optionally, the valve rod grinding device further comprises a clamping table, a grinding clamp is arranged on the clamping table, a positioning hole is formed in the grinding clamp, and the sleeve is fixed in the positioning hole.
Optionally, the sharpening clamp is rotatably arranged by taking the central axis of the positioning hole as a rotation axis.
Optionally, four positioning blocks uniformly distributed along the circumferential direction are arranged on the inner wall of the positioning hole, and the four positioning blocks are correspondingly embedded in the four mounting grooves.
Optionally, an expansion hole is formed in the joint of the th conical pipe and the sleeve, the conical hole is communicated with the threaded hole through the expansion hole, the central axis of the expansion hole and the central axis of the conical hole are arranged in a collinear manner, and the inner diameters of the threaded hole and the conical hole are smaller than the inner diameter of the expansion hole.
Optionally, the second conical pipe and the cylindrical pipe are provided with an annular groove on the outer wall of the butt joint along the circumferential direction.
Optionally, the length of the clamping hole in the axial direction is L, and L is more than 10mm and less than or equal to 25 mm.
The utility model provides a valve rod grinding device, the shrink joint that is located on the second taper pipe can make the inner wall of centre gripping hole shrink towards the central axis in centre gripping hole when receiving the extrusion of circumference, and then press from both sides the tight valve rod that is located the centre gripping hole, and through rotatory second taper pipe or sleeve pipe, make the screw hole advance step with external screw thread looks spiro union, can make the second taper pipe advance step towards keeping away from the sheathed tube direction and remove, at the in-process that the second taper pipe removed, the taper hole advances step by step and extrudes the second taper pipe, and then make centre gripping hole shrink clamp valve rod, the stability after the valve rod is by the centre gripping has been increased, the problem that the valve rod takes place the slope or deviates from is reduced, and the most advanced of taper pipe and the most advanced of second taper pipe are located the end that is close to the sealed conical surface on the valve rod, the terminal surface area of conical pipe and second taper pipe is less, avoid taking place the position interference with the emery wheel, can make and leave less distance between sealed conical surface and the conical pipe, allow to increase the length that the valve rod extends into the grinding is.
Drawings
The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the valve rod fixed in the clamping hole according to an alternative embodiment of the present invention.
Fig. 2 is a schematic structural view of the valve rod grinding device provided by the optional embodiment of the present invention.
Fig. 3 is a schematic structural view of th taper pipe and sleeve pipe butted together according to an alternative embodiment of the present invention.
Fig. 4 is a right side view of fig. 3 in accordance with an alternative embodiment of the present invention.
Fig. 5 is a schematic structural view of th taper pipe and sleeve pipe butted together according to an alternative embodiment of the present invention.
Detailed Description
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.
Fig. 1 is the structural schematic diagram of the valve rod fixed in the clamping hole provided by the optional embodiment of the present invention, fig. 2 is the structural schematic diagram of the valve rod grinding device provided by the optional embodiment of the present invention, fig. 3 is the structural schematic diagram of th taper tube and sleeve tube butt jointed provided by the optional embodiment of the present invention, fig. 4 is the right side view of fig. 3 provided by the optional embodiment of the present invention, fig. 5 is the structural schematic diagram of th taper tube and sleeve tube butt jointed provided by the optional embodiment of the present invention, as shown in fig. 1 to fig. 5, the present invention provides valve rod grinding devices, which includes th taper tube 11 and sleeve tube 12 butt jointed along the axial direction, and second taper tube 21 and cylindrical tube 22 butt jointed along the axial direction.
Referring to fig. 1 to 5, the -th tapered tube 11 has an outer diameter gradually decreasing along a direction away from the sleeve 12, the -th tapered tube 11 has a tapered hole 13 along the axial direction, the sleeve 12 has a threaded hole 15 along the axial direction, the tapered hole 13 communicates with the threaded hole 15, a central axis of the tapered hole 13 and a central axis of the threaded hole 15 are arranged in a collinear manner, an inner diameter of the tapered hole 13 gradually decreases along the direction away from the threaded hole 15, an outer diameter of the second tapered tube 21 gradually decreases along the direction away from the cylindrical tube 22, a clamping hole 23 for clamping the valve rod 3 is axially arranged on a side of the second tapered tube 21 facing away from the cylindrical tube 22, an external thread 25 adapted to the threaded hole 15 is arranged on an axial surface of the cylindrical tube 22, the second tapered tube 21 extends into the sleeve 12 from the threaded hole 15 until the external thread 25 is screwed into the threaded hole 15, an outer wall of the second tapered tube 21 is attached to an inner wall of the tapered hole 13, a taper of the tapered hole 13 is the same as a taper of the second tapered tube 21, and a strip-shaped slot 24 is arranged on an outer wall of the second tapered tube.
The utility model provides a valve rod grinding device, the shrink seam 24 that is located on second conical tube 21 can make second conical tube 21 the inner wall of centre gripping hole 23 shrink towards the central axis of centre gripping hole 23 when receiving circumferential extrusion, and then press from both sides the valve rod 3 that is located in centre gripping hole 23, and through rotatory second conical tube 21 or sleeve pipe 12, make screw hole 15 advance step with external screw thread 25 looks spiro union, can make second conical tube 21 advance step towards the direction of keeping away from sleeve pipe 12 and remove, in the in-process that second conical tube 21 removed, conical hole 13 advances step by step and extrudes second conical tube 21, and then make centre gripping hole 23 shrink press from both sides tight valve rod 3, the stability after valve rod 3 is by the centre gripping has been increased, the problem that valve rod 3 takes place the slope or deviate from has been reduced, and the tip of conical tube 11 and the most advanced of conical tube 21 are located the end that is close to sealing conical surface 31 on valve rod 3, the terminal surface area of conical tube 11 and second conical tube 21 is less, position interference has been avoided taking place with the emery wheel, can make the less distance of the sealing conical surface 31 and leave between , the extension of the centre gripping conical tube 11, the extension of valve rod 3 has allowed the grinding rate to take place the reduction of.
Optionally, the number of the contraction joints 24 is plural, and the plural contraction joints 24 are uniformly distributed along the circumferential direction of the second tapered pipe 21. The plurality of contraction joints 24 can enable the inner wall of the clamping hole 23 to be uniformly contracted towards the central axis of the clamping hole 23, the central axis of the contracted clamping hole 23 and the central axis of the clamping hole 23 before contraction are arranged in a collinear manner, and the valve rod 3 is prevented from being inclined.
As optional implementation processes, a strip-shaped mounting groove 16 is formed on the axial surface of the sleeve 12, the mounting groove 16 extends along the axial line of the sleeve 12 to the end surface of the sleeve 12 facing away from the conical tube 11. the mounting groove 16 increases the force application point for rotating the sleeve 12, and reduces the difficulty of rotating the sleeve 12.
Optionally, the number of the mounting grooves 16 is four, and the four mounting grooves 16 are uniformly distributed along the circumferential direction of the sleeve 12. The four mounting slots 16 provide four points of application, which allows the sleeve 12 to be stressed evenly, increasing the structural stability of the sleeve 12 after being stressed.
Preferably, the valve rod grinding device further comprises a clamping table, a grinding clamp is arranged on the clamping table, a positioning hole is formed in the grinding clamp, and the sleeve 12 is fixed in the positioning hole. The valve rod 3 is stably fixed on the clamping table through the positioning hole fixing sleeve 12, and the sealing conical surface 31 is conveniently polished by a grinding wheel in the later period.
, the coping clamp is rotationally arranged by taking the central axis of the positioning hole as a rotation axis, the sleeve 12 is clamped in the positioning hole, the central axis of the tapered hole 13 can be coincided with the central axis of the clamping hole 23, the coping clamp is rotationally arranged along the central axis of the positioning hole, the valve rod 3 can be rotationally arranged along the self axis, the eccentricity of the sealing conical surface 31 during rotation is further reduced , and the defective rate after coping is reduced.
Optionally, four positioning blocks are uniformly distributed along the circumferential direction on the inner wall of the positioning hole, and the four positioning blocks are correspondingly embedded in the four mounting grooves 16, the four positioning blocks in this embodiment can play a role in stably clamping the sleeve 12 and simultaneously prevent the sleeve 12 from sliding along the circumferential direction of the positioning hole, so that the stability of the positioning hole for clamping the sleeve 12 is further increased .
Preferably, the taper pipe 11 and the sleeve 12 are provided with an expanding hole 14 at the joint, the taper hole 13 is communicated with the threaded hole 15 through the expanding hole 14, the central axis of the expanding hole 14 is arranged in line with the central axis of the taper hole 13, the inner diameters of the threaded hole 15 and the taper hole 13 are smaller than the inner diameter of the expanding hole 14, the expanding hole 14 can reduce the resistance of the cylindrical pipe 22 when passing at the joint where the taper hole 13 is communicated with the taper hole 15, and the convenience of moving the second taper pipe 21 in the direction away from the sleeve 12 is increased.
As optional implementation processes, the second conical pipe 21 and the cylindrical pipe 22 are provided with an annular groove 26 along the circumferential direction on the outer wall of the joint, similarly, the annular groove 26 can reduce the resistance of the cylindrical pipe 22 when passing through the communication part of the conical hole 13 and the threaded hole 15, and increase the convenience of moving the second conical pipe 21 in the direction away from the sleeve 12.
, the length of the clamping hole 23 in the axial direction is L, L is more than 10mm and less than or equal to 25mm, in this embodiment, the length of the valve rod 3 extending into the clamping hole 23 is increased to 25mm, the distance between the sealing conical surface 31 and the -th conical pipe 11 or the second conical pipe 21 can be effectively reduced, the shaking amount of the valve rod 3 is reduced, and the defective rate after grinding is reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1, kind of valve rod grinding device, its characterized in that includes:
taper pipe and sleeve which are connected in an axial direction, the outer diameter of the taper pipe is gradually reduced along the direction far away from the sleeve, the taper pipe is axially provided with a taper hole, the sleeve is axially provided with a threaded hole, the taper hole is communicated with the threaded hole, the central axis of the taper hole is arranged in a line with the central axis of the threaded hole, and the inner diameter of the taper hole is gradually reduced along the direction far away from the threaded hole;
the outer diameter of the second conical pipe is gradually reduced along the direction far away from the cylindrical pipe, a clamping hole used for clamping the valve rod is formed in the side, back to the cylindrical pipe, of the second conical pipe along the axial direction, an external thread matched with the threaded hole is formed in the shaft surface of the cylindrical pipe, the second conical pipe extends into the sleeve from the threaded hole until the external thread is in threaded connection with the threaded hole, the outer wall of the second conical pipe is attached to the inner wall of the conical hole, the taper of the conical hole is the same as that of the second conical pipe, and a strip-shaped contraction joint is formed in the outer wall of the second conical pipe along the axial direction.
2. The valve rod grinding device according to claim 1, wherein the number of the contraction joints is plural, and the plurality of the contraction joints are uniformly distributed along the circumferential direction of the second tapered pipe.
3. The valve rod grinding device according to claim 2, wherein a strip-shaped mounting groove is formed in a shaft surface of the sleeve, and the mounting groove extends to an end surface, facing away from the th tapered tube, of the sleeve along the axis of the sleeve.
4. The valve stem sharpening device according to claim 3, wherein the number of the mounting grooves is four, and four mounting grooves are uniformly distributed along a circumferential direction of the sleeve.
5. The valve rod grinding device according to claim 4, further comprising a clamping table, wherein a grinding clamp is arranged on the clamping table, a positioning hole is formed in the grinding clamp, and the sleeve is fixed in the positioning hole.
6. The valve stem sharpening device according to claim 5, wherein the sharpening clamp is rotatably disposed with a central axis of the positioning hole as a rotation axis.
7. The valve rod grinding device according to claim 6, wherein four positioning blocks are uniformly distributed along the circumferential direction on the inner wall of the positioning hole, and the four positioning blocks are correspondingly embedded in the four mounting grooves.
8. The valve rod grinding device according to claim 7, wherein an expansion hole is formed in a connecting position of the th taper pipe and the sleeve, the taper hole is communicated with the threaded hole through the expansion hole, a central axis of the expansion hole and a central axis of the taper hole are arranged in a collinear mode, and inner diameters of the threaded hole and the taper hole are smaller than an inner diameter of the expansion hole.
9. The valve rod grinding device according to any one of claims 1 to 8 to , wherein the second conical tube and the cylindrical tube are provided with an annular groove along the circumferential direction on the outer wall of the joint.
10. The valve stem thinning apparatus according to any of claims 1 to 8, wherein the length of the clamping hole in the axial direction is L, and 10mm < L ≦ 25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705154.9U CN209998970U (en) | 2019-05-16 | 2019-05-16 | Valve rod grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705154.9U CN209998970U (en) | 2019-05-16 | 2019-05-16 | Valve rod grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209998970U true CN209998970U (en) | 2020-01-31 |
Family
ID=69307056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920705154.9U Active CN209998970U (en) | 2019-05-16 | 2019-05-16 | Valve rod grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209998970U (en) |
-
2019
- 2019-05-16 CN CN201920705154.9U patent/CN209998970U/en active Active
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| GR01 | Patent grant | ||
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