CN211231633U - High-pressure stop valve with guide self-centering sealing valve clack - Google Patents
High-pressure stop valve with guide self-centering sealing valve clack Download PDFInfo
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- CN211231633U CN211231633U CN201921853536.2U CN201921853536U CN211231633U CN 211231633 U CN211231633 U CN 211231633U CN 201921853536 U CN201921853536 U CN 201921853536U CN 211231633 U CN211231633 U CN 211231633U
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Abstract
The utility model discloses a high pressure stop valve of area direction self-centering sealing valve clack, including valve body, valve rod and valve gap, the valve body includes the disk seat, and the valve gap is fixed on the valve body, is equipped with the sealing filler in the valve gap, and terminal fixed connection has the valve clack under the valve rod, and the fixed uide pin that is equipped with on the valve clack, the uide pin can only slide on the direction of lift of valve clack under the drive of valve clack, and the direction of lift of valve clack is the slip direction of uide. The utility model has the advantages of it is following and effect: the novel mechanical structure is utilized, the design is reasonable, the guide pin can be driven by the valve clack to lift in the process that the valve rod drives the valve clack to lift, the normal work of the stop valve is not influenced, but the guide pin limits the rotation of the valve clack, so that the valve clack cannot rotate around the central axis of the valve clack, and the sealing position cannot be greatly changed; the sealing surface of the valve clack adopts a conical design, and the linear sealing characteristic can automatically align the sealing center, so that the sealing surface is ensured to be tightly attached to realize reliable sealing.
Description
Technical Field
The utility model relates to a stop valve, in particular to area direction is from high pressure stop valve of centering seal valve clack.
Background
The stop valve is also called as a stop valve, and is popular because of small friction force of a sealing surface, high durability, small opening degree, easy manufacture, convenient maintenance and applicability to high, medium and low pressure during opening and closing. The high-pressure stop valve belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force a sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. In recent years, after self-sealing valves appear, the medium flow direction of the stop valve enters the valve cavity from the upper part of the valve clack instead, and at the moment, the force for closing the valve is small under the action of medium pressure, while the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. However, the sealing position of the high-pressure stop valve still changes in the using process, and the valve clack rotates in the using process, so that the sealing surface cannot be tightly attached to influence the sealing effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sealed stable, outer leak point few and valve rod wearing and tearing little area direction from high pressure stop valve of centering seal valve clack.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a high pressure stop valve of self-centering seal valve clack is led in area, which comprises a valve body, valve rod and valve gap, the valve body includes the disk seat, the valve gap is fixed on the valve body, be equipped with the sealing filler in the valve gap, valve rod nut is located the valve gap top, the valve rod passes valve rod nut, stretch into in the valve body behind sealing filler and the valve gap, terminal fixed connection has the valve clack under the valve rod, the sealed face of the valve clack of valve clack and the sealed cooperation of face of the disk seat of disk seat, the fixed uide pin that is equipped with on the valve clack, the uide pin can only slide on the direction of.
Through the technical scheme, the valve rod drives the valve clack to lift, the guide pin can lift under the driving of the valve clack, the normal work of the stop valve is not influenced, the guide pin limits the rotation of the valve clack at the same time, the valve clack cannot rotate around the central axis of the valve clack, and the sealing position cannot be changed greatly.
Further setting the following steps: the valve seat sealing surface is a conical surface, and the conical small end of the valve clack sealing surface is smaller than the opening of the valve seat sealing surface.
Through the technical scheme, the valve clack sealing surface is designed in a conical shape, the sealing center can be automatically aligned due to the linear sealing characteristic, and reliable sealing is realized by ensuring that the sealing surface is tightly attached.
Further setting the following steps: the packing pressing sleeve is attached to the spherical surface of the valve cover, the bottom of the packing pressing sleeve is pressed against the top of the sealing packing, the packing pressing plate is connected with the valve cover through a bolt, and the packing pressing plate is in sealing fit with the top surface of the packing pressing sleeve.
Through above-mentioned technical scheme, pack and press the cover and adopt sphere laminated structure with the valve gap, prevented that the clamp plate that packs from holding the valve rod back to die to damage the valve rod surface, cause the packing to seal and leak, produce big moment of torsion simultaneously.
Further setting the following steps: the valve cover is fixedly connected with the valve body through welding.
Through above-mentioned technical scheme, the valve gap adopts the welded type with the valve body to reduce outer leak source, has increased the leakproofness.
In conclusion, in the process that the valve rod drives the valve clack to lift, the guide pin can lift under the driving of the valve clack, the normal work of the stop valve is not influenced, but the guide pin limits the rotation of the valve clack, so that the valve clack cannot rotate around the central axis of the valve clack, and the sealing position cannot be greatly changed; the sealing surface of the valve clack adopts a conical design, and the linear sealing characteristic can automatically align the sealing center, so that the sealing surface is ensured to be tightly attached to realize reliable sealing; the packing pressing sleeve and the valve cover adopt a spherical surface fitting structure, so that the packing pressing plate is prevented from blocking the valve rod, the surface of the valve rod is damaged, the packing is sealed and leaked, and large torque is generated; the valve cover and the valve body are welded, so that outer leakage points are reduced, and the sealing performance is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
in the figure: 1. a valve body; 2. a valve stem; 3. a valve cover; 4. sealing and filling; 5. a valve stem nut; 6. a valve flap; 7. a valve flap sealing surface; 8. a valve seat; 9. a valve seat sealing surface; 10. a guide pin; 11. a guide groove; 12. pressing and sleeving the filler; 13. a packing press plate; 14. a cylindrical pin; 15. a gasket; 16. a hexagonal nut; 17. a swing screw; 18. a support; 19. opening the ring; 20. locking the nut; 21. tightening the screw; 22. a handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A high-pressure stop valve with a guide self-centering sealing valve clack,
as shown in the figures 1-2 of the drawings,
including valve body 1, valve rod 2 and valve gap 3, valve body 1 includes disk seat 8, valve gap 3 passes through welded fastening on valve body 1, be equipped with sealing filler 4 in the valve gap 3, valve rod nut 5 is located valve gap 3 top, valve rod 2 passes valve rod nut 5, stretch into in the valve body 1 behind sealing filler 4 and the valve gap 3, terminal fixedly connected with valve clack 6 under the valve rod 2, the sealed face 7 of valve clack 6 is conical surface and with the sealed cooperation of the disk seat 9 of disk seat 8, the toper tip of the sealed face 7 of valve clack is less than the opening of the sealed face 9 of disk seat, the fixed uide pin 10 that is equipped with on the valve clack 6, the position that the 3 inner walls of valve gap correspond uide. The guide groove 11 is engaged with the guide pin 10 so that the guide pin 10 can slide vertically in the guide groove 11 while being restricted from rotating in the horizontal direction. The guide groove 11 can also be arranged on the inner wall of the valve body 1 or extend from the inner wall of the valve cover 3 to the inner wall of the valve body 1, which is required to be arranged according to the lifting range of the valve clack 6.
The packing pressing sleeve 12 is attached to the spherical surface of the valve cover 3, the bottom of the packing pressing sleeve 12 is pressed against the top of the sealing packing 4, the packing pressing plate 13 is connected with the valve cover 3 through a cylindrical pin 14, a gasket 15, a hexagon nut 16 and an eyelet screw 17 through bolts, and the packing pressing plate 13 is in sealing fit with the top surface of the packing pressing sleeve 12. The cylindrical pin 14 is fixed by a bracket 18 which is sleeved and fixed on the valve cover 3, and a split ring 19 is arranged between the bracket 18 and the valve cover 3. The valve rod nut 5 is provided with a set screw 21, and the top end of the valve rod 2 is fixed with a handle 22 through a lock nut 20.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a high pressure stop valve of sealed valve clack is from feeling relieved from area direction, includes valve body (1), valve rod (2) and valve gap (3), valve body (1) including disk seat (8), valve gap (3) fix on valve body (1), valve gap (3) in be equipped with sealing filler (4), valve gap (3) top be equipped with valve rod nut (5), valve rod (2) pass and stretch into behind valve rod nut (5), sealing filler (4) and valve gap (3) in valve body (1), valve rod (2) under terminal fixed connection have valve clack (6), the sealed face (9) of sealed face (7) and disk seat (8) of valve clack (6) seal cooperation, its characterized in that: the valve clack is characterized in that a guide pin (10) is fixedly arranged on the valve clack (6), the guide pin (10) can only slide in the lifting direction of the valve clack (6) under the driving of the valve clack (6), and the lifting direction of the valve clack (6) is the sliding direction of the guide pin (10).
2. The high pressure stop valve with the guided self-centering sealing flap of claim 1, characterized in that: the sealing surface of the valve seat (8) is a conical surface, and the conical small end of the sealing surface of the valve clack (6) is smaller than the opening of the sealing surface of the valve seat (8).
3. The high pressure stop valve with the guided self-centering sealing flap of claim 1, characterized in that: the packing pressing sleeve (12) is attached to the spherical surface of the valve cover (3) in a pressing mode, the bottom of the packing pressing sleeve (12) abuts against the top of the sealing packing (4), the packing pressing plate (13) is connected with the valve cover (3) through bolts, and the packing pressing plate (13) is matched with the top surface of the packing pressing sleeve (12) in a sealing mode.
4. The high pressure stop valve with the guided self-centering sealing flap of claim 1, characterized in that: the valve cover (3) is fixedly connected with the valve body (1) through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853536.2U CN211231633U (en) | 2019-10-30 | 2019-10-30 | High-pressure stop valve with guide self-centering sealing valve clack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853536.2U CN211231633U (en) | 2019-10-30 | 2019-10-30 | High-pressure stop valve with guide self-centering sealing valve clack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231633U true CN211231633U (en) | 2020-08-11 |
Family
ID=71936522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921853536.2U Active CN211231633U (en) | 2019-10-30 | 2019-10-30 | High-pressure stop valve with guide self-centering sealing valve clack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211231633U (en) |
-
2019
- 2019-10-30 CN CN201921853536.2U patent/CN211231633U/en active Active
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