CN211852999U - Two-section type stop valve core assembly - Google Patents
Two-section type stop valve core assembly Download PDFInfo
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- CN211852999U CN211852999U CN201922453093.4U CN201922453093U CN211852999U CN 211852999 U CN211852999 U CN 211852999U CN 201922453093 U CN201922453093 U CN 201922453093U CN 211852999 U CN211852999 U CN 211852999U
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- 238000007789 sealing Methods 0.000 claims abstract description 63
- 230000007704 transition Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 230000011218 segmentation Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of control valves, in particular to a two-section stop valve core assembly, which comprises a valve seat, a valve cap, a driving valve rod and a sealing valve rod, wherein the valve seat is axially provided with a first mounting hole, a second mounting hole and a containing hole which are communicated and have the same axis; the valve cap is embedded into the first mounting hole in a form-fitting manner; the valve cap is provided with a third mounting hole along the axial direction; the driving valve rod is embedded in the third mounting hole in a conformal manner, and the outer wall of the driving valve rod is in threaded connection with the third mounting hole; one end of the driving valve rod, which is close to the second mounting hole, is provided with a connecting hole, and the diameter of a port of the connecting hole is smaller than the diameter of an inner cavity of the connecting hole; the connecting end of the sealing valve rod is embedded in the inner cavity of the connecting hole in a fitting mode, and the sealing end of the sealing valve rod is arranged in the accommodating hole. The two-section type split structure greatly improves the reliability of connection between the driving valve rod and the sealing valve rod while improving the sealing performance and safety of the valve clack and the valve seat, and also prolongs the service life of the stop valve.
Description
Technical Field
The utility model relates to a control valve technical field, concretely relates to two segmentation stop valve case subassemblies.
Background
The stop valve, also called stop valve, is one of the most widely used valves, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also for high pressure. The closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of the valve rod, and the medium is prevented from flowing.
Stop valve structure on the existing market is opening and close the in-process, and sealed valve rod is followed and is driven the valve rod rotation, produces rotational friction between the sealed face of valve clack and the sealed face of disk seat, and is so for a long time, can produce the contact gap between the sealed face of valve clack and the sealed face of disk seat to lead to the stop valve phenomenon of revealing to appear when closing, reduce the leakproofness and the security of stop valve, also influenced life.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a two-stage stop valve core assembly to overcome the drawbacks of the prior art.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a two-section type stop valve core assembly comprises a valve seat, a valve cap, a driving valve rod and a sealing valve rod, wherein the valve seat is sequentially provided with a first mounting hole, a second mounting hole and a containing hole which are communicated and coaxial from top to bottom along the axial direction, and the second mounting hole is connected and transited with the containing hole through a transition hole;
the bonnet is embedded into the first mounting hole in a form-fitting manner, and the outer wall of the bonnet is in threaded connection with the inner wall of the first mounting hole; the valve cap is provided with a third mounting hole along the axial direction, the driving valve rod is embedded into the third mounting hole in a form-fitting manner, and the outer wall of the driving valve rod is in threaded connection with the inner wall of the third mounting hole; one end of the driving valve rod, which is close to the second mounting hole, is provided with a connecting hole, and the diameter of a port of the connecting hole is smaller than the diameter of an inner cavity of the connecting hole; the connecting end of the sealing valve rod is embedded in the inner cavity of the connecting hole in a form-fitting manner, and the sealing end of the sealing valve rod sequentially penetrates through the port of the connecting hole, the third mounting hole, the second mounting hole and the transition hole and then is arranged in the accommodating hole.
Furthermore, the sealing valve rod comprises a connector, a rod body and a valve clack which are sequentially connected, the connector is embedded in the inner cavity of the connecting hole in a form-fitting manner, and the connector is movably matched with the inner cavity of the connecting hole; the valve clack is movably arranged in the accommodating hole along the axial direction; and two ends of the rod body are respectively connected with the connector and the valve clack.
Furthermore, a first conical surface is arranged on the outer wall of a sealing surface at one end of the valve clack, which is far away from the rod body; the edge of the joint of the transition hole and the accommodating hole is provided with a chamfer, and the outer wall of the valve clack close to one end of the rod body is provided with a second conical surface matched with the chamfer.
Furthermore, the outer wall of the valve cap outside the first mounting hole is sleeved with a locking nut in a penetrating mode, and the locking nut is in threaded fit with the outer wall of the valve cap.
Further, one end, far away from the connecting hole, of the driving valve rod extends out of the valve cap.
Further, the one end that the disk seat was kept away from to the valve cap is provided with the shield, the through-hole has been seted up on the shield, the through-hole sets up with driving valve rod form fit and coaxial line, and driving valve rod runs through and extends outside the shield after the through-hole.
Furthermore, a metal gasket and a sealing gasket are sequentially arranged in the second mounting hole in the direction towards the transition hole, and the sealing gasket is arranged in a sealing manner with the inner wall of the second mounting hole; the metal gasket sets up in the junction of first mounting hole and second mounting hole, the both ends of metal gasket respectively with valve cap and seal ring butt.
The utility model has the advantages that: the utility model discloses a two segmentation stop valve case subassemblies, it sets two segmentation components of a whole that can function independently structures through driving valve rod and sealed valve rod, when the rotary driving valve rod drives the opening and close of sealed valve rod realization valve, because the connector setting of sealed valve rod is in the inner chamber of driving valve rod connecting hole, when driving valve rod and valve cap cooperation carry out rotary lifting motion, it only can drive sealed valve rod whole lift to the action that the connector pushed/pulled to drive the valve rod, it rotates to have avoided sealed valve rod whole to follow driving valve rod, thereby avoided taking place rotational friction between the sealed face of valve clack and the sealed face of disk seat and lead to wearing and tearing to lead to sealed face to leak at the in-process that the valve was opened and. In addition, the connecting hole is structurally arranged, so that the connecting head of the sealing valve rod can be limited in the inner cavity, and the sealing valve rod is prevented from being separated from the driving valve rod and falling off. The two-section type split structure greatly improves the reliability of connection between the driving valve rod and the sealing valve rod while improving the sealing performance and safety of the valve clack and the valve seat, and also prolongs the service life of the stop valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the two-stage stop valve core assembly of the present invention.
Reference numerals:
1-valve seat, 11-first mounting hole, 12-second mounting hole, 13-accommodating hole, 14-transition hole, 2-valve cap, 21-third mounting hole, 3-driving valve rod, 31-connecting hole, 311-port, 312-inner cavity, 4-sealing valve rod, 41-connecting head, 42-rod body, 43-valve flap, 431-first conical surface, 432-second conical surface, 5-locking nut, 6-dust cap, 61-through hole, 7-metal washer and 8-sealing washer.
Detailed Description
The present invention will be described in further detail with reference to examples.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, in order to provide the present invention with a two-section type stop valve core assembly, specifically, the valve core assembly includes a valve seat 1, a valve cap 2, a driving valve rod 3 and a sealing valve rod 4, the valve seat 1 is provided with a first mounting hole 11, a second mounting hole 12 and an accommodating hole 13 which are communicated and coaxial in sequence from top to bottom along the axial direction, and the second mounting hole 12 and the accommodating hole 13 are connected and transited through a transition hole 14;
the bonnet 2 is embedded into the first mounting hole 11 in a form-fitting manner, and the outer wall of the bonnet 2 is in threaded connection with the inner wall of the first mounting hole 11; the bonnet 2 is provided with a third mounting hole 21 in the axial direction; the driving valve rod 3 is embedded in the third mounting hole 21 in a form-fitting manner, and the outer wall of the driving valve rod 3 is in threaded connection with the third mounting hole 21; one end of the drive valve rod 3 close to the second mounting hole 12 is provided with a connecting hole 31, and the diameter of a port 311 of the connecting hole 31 is smaller than the diameter of an inner cavity 312 of the connecting hole 31; the connecting end of the sealing valve rod 4 is embedded in the inner cavity 312 of the connecting hole 31 in a form-fitting manner, and the sealing end of the sealing valve rod 4 is arranged in the accommodating hole 13 after passing through the port 311 of the connecting hole 31, the third mounting hole 21, the second mounting hole 12 and the transition hole 14 in sequence.
The utility model discloses a stop valve case subassembly mainly includes disk seat 1, valve cap 2, drive valve rod 3 and four parts of sealed valve rod 4, and the 11 inner walls of first mounting hole of disk seat 1 pass through threaded connection with 2 outer walls of valve cap. The bonnet 2 is provided with a third through mounting hole 21 along the axial direction, and the inner wall of the third mounting hole 21 is in threaded fit with a part of the shaft of the driving valve rod 3, so that the driving valve rod 3 can be driven to move up and down in the bonnet 2 by rotating the driving valve rod 3. The utility model discloses a drive valve rod 3 adopts two segmentation components of a whole that can function independently structures with sealed valve rod 4, specifically, as shown in fig. 1, connecting hole 31 has been seted up to drive valve rod 3's bottom, and this connecting hole 31 includes port 311 and inner chamber 312, and inner chamber 312 sets up in the top of port 311, and inner chamber 312 passes through port 311 and third mounting hole 21 intercommunication. And the diameter of the port 311 is smaller than that of the inner cavity 312, the connecting end of the sealing valve rod 4 is arranged in the inner cavity 312 of the connecting hole 31, the sealing end of the sealing valve rod 4 is arranged in the accommodating hole 13, and the sealing end is matched with the sealing surface of the valve seat 1 to open and close the valve.
When the driving valve rod 3 is in threaded fit with the bonnet 2 to perform rotary lifting movement, the driving valve rod 3 only pushes/pulls the connector 41 through the inner cavity 312 of the connecting hole 31 and the port 311 to drive the sealing valve rod 4 to integrally lift, so that the structure prevents the sealing valve rod 4 from integrally rotating along with the driving valve rod 3, and avoids the sealing surface of the valve clack 43 and the sealing surface of the valve seat 1 from being abraded due to the rotary friction in the opening and closing process of the valve to cause the leakage of the sealing surface. In addition, the structure of the connecting hole 31 is set so that the connecting head 41 of the sealing stem 4 is confined in the inner cavity 312, and the sealing stem 4 is prevented from being detached from the driving stem 3 and falling off. The two-section type split structure greatly improves the reliability of connection between the driving valve rod 3 and the sealing valve rod 4 and prolongs the service life of the stop valve while improving the sealing performance and safety of the valve clack 43 and the valve seat 1.
Specifically, the sealing valve rod 4 comprises a connector 41, a rod body 42 and a valve flap 43 which are sequentially connected, the connector 41 is embedded in an inner cavity 312 of the mounting hole in a form-fitting manner, and the connector 41 is movably matched with the inner cavity 312 of the mounting hole; the valve flap 43 is movably arranged in the accommodating hole 13 along the axial direction; the two ends of the rod 42 are respectively connected with the connector 41 and the valve clack 43. The joint of the connecting head 41 and the rod 42 is located in the port 311 of the connecting hole 31, so the diameter of the joint of the connecting head 41 and the rod 42 is smaller than that of the connecting head 41. The structural arrangement of the connecting hole 31 can enable the connecting head 41 of the sealing valve rod 4 to be limited in the inner cavity 312, so that the sealing valve rod 4 is prevented from being separated from the driving valve rod 3 and falling off, and the reliability of connection between the driving valve rod 3 and the sealing valve rod 4 is greatly improved.
Wherein, the outer wall of the sealing surface of the valve clack 43 far away from the rod body 42 is provided with a first conical surface 431; the edge of the junction of the transition hole 14 close to the receiving hole 13 is provided with a chamfer, and the outer wall of the valve flap 43 close to one end of the rod body 42 is provided with a second conical surface 432 matched with the chamfer. The first conical surface 431 of the valve flap 43 is matched with the sealing surface of the valve seat 1 to realize the valve control on the flow of various types of fluid media, and the second conical surface 432 of the valve flap 43 is matched with the chamfer angle to play a role in limiting the height of the sealing valve rod 4 during ascending movement.
In order to tightly connect the valve seat 1 and the bonnet 2, a locking nut 5 is sleeved on the outer wall of the bonnet 2 outside the first mounting hole 11, and the locking nut 5 is in threaded fit with the outer wall of the bonnet 2.
Further, an end of drive stem 3 remote from coupling hole 31 extends outside bonnet 2. The end of the driving valve rod 3 extending out of the bonnet 2 can be provided with a rotating handle to assist an operator to rotate the driving valve rod 3.
Wherein, inside in order to prevent that dust etc. from entering into valve cap 2 and disk seat 1, influence the normal use of this case subassembly, the one end that disk seat 1 was kept away from to valve cap 2 is provided with shield 6, has seted up through-hole 61 on shield 6, and through-hole 61 and drive valve rod 3 conformal fit and coaxial line set up, and drive valve rod 3 runs through behind through-hole 61 and extends outside shield 6.
Furthermore, a metal gasket 7 and a sealing gasket 8 are sequentially arranged in the second mounting hole 12 in the direction of the transition hole 14, and the sealing gasket 8 is arranged in a sealing manner with the inner wall of the second mounting hole 12; the metal gasket 7 is arranged at the joint of the first mounting hole 11 and the second mounting hole 12, and two ends of the metal gasket 7 are respectively abutted against the valve cap 2 and the sealing washer 8.
Specifically, the metal gasket 7 is movably engaged with the rod 42, and the sealing gasket 8 is sealingly engaged with the rod 42. When drive valve rod 3 and valve cap 2 cooperation carry out rotary lifting motion, drive valve rod 3 makes the action of pushing away/pulling to connector 41 and drives sealed valve rod 4 whole lift, because sealed valve rod 4 is whole can not follow drive valve rod 3 and rotates, so, also can not produce relative rotation between sealed valve rod 4 and the seal ring 8, the friction and the torsion between the body of rod 42 outer wall and the 8 inner walls of seal ring have been reduced, thereby seal ring 8's wearing and tearing have also been reduced, the holistic sealing performance of stop valve and life have been improved.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. The utility model provides a two segmentation stop valve case subassemblies which characterized in that: the valve seat is sequentially provided with a first mounting hole, a second mounting hole and a containing hole which are communicated and are coaxial from top to bottom along the axial direction, and the second mounting hole is connected and transited with the containing hole through a transition hole;
the bonnet is embedded into the first mounting hole in a form-fitting manner, and the outer wall of the bonnet is in threaded connection with the inner wall of the first mounting hole; the valve cap is provided with a third mounting hole along the axial direction, the driving valve rod is embedded into the third mounting hole in a form-fitting manner, and the outer wall of the driving valve rod is in threaded connection with the inner wall of the third mounting hole; one end of the driving valve rod, which is close to the second mounting hole, is provided with a connecting hole, and the diameter of a port of the connecting hole is smaller than the diameter of an inner cavity of the connecting hole; the connecting end of the sealing valve rod is embedded in the inner cavity of the connecting hole in a form-fitting manner, and the sealing end of the sealing valve rod sequentially penetrates through the port of the connecting hole, the third mounting hole, the second mounting hole and the transition hole and then is arranged in the accommodating hole.
2. The two-piece stop valve spool assembly of claim 1, wherein: the sealing valve rod comprises a connector, a rod body and a valve clack which are sequentially connected, the connector is embedded in an inner cavity of the connecting hole in a form-fitting manner, and the connector is movably matched with the inner cavity of the connecting hole; the valve clack is movably arranged in the accommodating hole along the axial direction; and two ends of the rod body are respectively connected with the connector and the valve clack.
3. The two-piece stop valve spool assembly of claim 2, wherein: the outer wall of a sealing surface at one end of the valve clack, which is far away from the rod body, is provided with a first conical surface; the edge of the joint of the transition hole and the accommodating hole is provided with a chamfer, and the outer wall of the valve clack close to one end of the rod body is provided with a second conical surface matched with the chamfer.
4. The two-piece stop valve spool assembly of claim 1, wherein: the outer wall of the valve cap outside the first mounting hole is sleeved with a locking nut in a penetrating mode, and the locking nut is in threaded fit with the outer wall of the valve cap.
5. The two-piece stop valve spool assembly of claim 1, wherein: one end of the driving valve rod, which is far away from the connecting hole, extends out of the valve cap.
6. The two-piece stop valve spool assembly of claim 1, wherein: the one end that the disk seat was kept away from to the valve cap is provided with the shield, the through-hole has been seted up on the shield, the through-hole sets up with driving valve rod conformal fit and coaxial line, and driving valve rod runs through behind the through-hole and extends outside the shield.
7. The two-piece stop valve spool assembly of claim 1, wherein: a metal gasket and a sealing gasket are sequentially arranged in the second mounting hole towards the transition hole, and the sealing gasket is arranged on the inner wall of the second mounting hole in a sealing manner; the metal gasket sets up in the junction of first mounting hole and second mounting hole, the both ends of metal gasket respectively with valve cap and seal ring butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453093.4U CN211852999U (en) | 2019-12-30 | 2019-12-30 | Two-section type stop valve core assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453093.4U CN211852999U (en) | 2019-12-30 | 2019-12-30 | Two-section type stop valve core assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852999U true CN211852999U (en) | 2020-11-03 |
Family
ID=73208309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922453093.4U Active CN211852999U (en) | 2019-12-30 | 2019-12-30 | Two-section type stop valve core assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852999U (en) |
-
2019
- 2019-12-30 CN CN201922453093.4U patent/CN211852999U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 400700 15-1, No. 6, Fengqi Road, caijiagang Town, Beibei District, Chongqing Patentee after: CHONGQING JIUHUAN MACHINERY & ELECTRIC Co.,Ltd. Address before: 400000 No.1 Xinmao Road, Beibei District, Chongqing (Free Trade Zone) Patentee before: CHONGQING JIUHUAN MACHINERY & ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |