CN220891138U - Anti-dissipation switch type ball valve - Google Patents
Anti-dissipation switch type ball valve Download PDFInfo
- Publication number
- CN220891138U CN220891138U CN202322801825.0U CN202322801825U CN220891138U CN 220891138 U CN220891138 U CN 220891138U CN 202322801825 U CN202322801825 U CN 202322801825U CN 220891138 U CN220891138 U CN 220891138U
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- packing
- valve
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- ring
- combined
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- 238000012856 packing Methods 0.000 claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 26
- 239000010439 graphite Substances 0.000 claims abstract description 26
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 20
- 125000006850 spacer group Chemical group 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 45
- 239000000835 fiber Substances 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 11
- 239000002131 composite material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
The utility model relates to an anti-escape switch type ball valve, wherein a rod seat is also provided with a stuffing box, a valve rod penetrates through the stuffing box, PTFE combined packing, a spacing ring and graphite combined packing are arranged in the stuffing box, the spacing ring is positioned between the PTFE combined packing and the graphite combined packing, an annular pressing sleeve is arranged above the graphite combined packing, a pressing plate is arranged above the annular pressing sleeve, a locking bolt is arranged between the pressing plate and the rod seat, and the locking bolt is provided with a locking nut. Through optimizing the filler structure in the stuffing box, the anti-escape capability is improved, the leakage risk is reduced, the packing is separated and supported by the spacer ring, the upper side and the lower side are combined and sealed by two different types of packing (namely PTFE combined packing and graphite combined packing), even if some of the packing is worn, other packing can still be normally sealed, and the leakage risk is reduced.
Description
Technical Field
The present utility model relates to ball valves.
Background
The ball valve is internally provided with a ball core for matching with a valve switch, wherein the ball core is driven by a valve rod to operate, the valve rod is provided with corresponding sealing filler for matching sealing, and in the process that the ball core rotates along with the valve rod, relative movement exists between the valve rod and the sealing filler, and the relative movement times are continuously increased along with the increase of opening and closing times, so that the sealing effect of the sealing filler is poor, and the leakage and dissipation of the valve are caused by loosening of a packing (gland) and the like; in addition, the sealing filler has the problems of leakage and dissipation due to the influence of high-temperature, high-pressure and strong-permeability fluid media.
Disclosure of utility model
In view of the technical problems existing in the background art, the technical problems solved by the utility model aim to provide an anti-escape switch type ball valve capable of reducing leakage risks.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an anti-escape switch type ball valve, includes valve body, valve gap, ball core, valve rod and pole seat, and valve gap connection is on the valve body, and the ball core disposes between valve gap and valve body, and the valve rod is connected with the ball core, and pole seat is connected on the valve body, still is equipped with the stuffing box on the pole seat, and the valve rod passes the stuffing box, its characterized in that: the packing box is internally provided with PTFE combined packing, a spacing ring and graphite combined packing, the spacing ring is positioned between the PTFE combined packing and the graphite combined packing, an annular pressing sleeve is arranged above the graphite combined packing, a pressing plate is arranged above the annular pressing sleeve, a locking bolt is arranged between the pressing plate and the rod seat, and the locking bolt is provided with a locking nut.
The following various optimization or supplementary explanation can be performed on the above technical solutions, respectively.
For example, the PTFE composite packing comprises multiple V-packing rings arranged one above the other.
For another example, the spacer ring comprises an annular sleeve body, and O-shaped sealing rings are respectively arranged on the inner hole wall and the outer ring wall of the annular sleeve body.
For example, the graphite composite packing comprises an upper fiber packing ring, a graphite ring multi-layer packing and a lower fiber packing ring.
And then optimizing, wherein the graphite ring multi-layer packing comprises 42-degree high-tightness graphite self-sealing rings positioned at the upper end and the lower end and 45-degree low-tightness diamond-shaped graphite rings positioned in the middle.
In addition, the top of valve body is equipped with the connecting hole, and the bottom of pole seat has boss portion, and boss portion disposes in the connecting hole, and the valve rod hole department of boss portion is equipped with the step shrinkage pool, disposes the spring energy storage sealing washer in the step shrinkage pool, still sets up thrust washer between the terminal surface of boss portion and the connecting hole, and the spring energy storage sealing washer is located the upside of stopping washer.
In addition, set up the toper face cooperation respectively and be connected between clamp plate and the annular pressure cover, set up pretension dish spring between clamp plate and the lock nut.
Wherein, sealing gaskets and O-shaped rings are arranged between the valve body, the valve cover and the rod seat
The anti-escape switch type ball valve has the beneficial effects that in the anti-escape switch type ball valve, the anti-escape capability is improved and the leakage risk is reduced by optimizing the filler structure in the filler box, wherein the filler is separated and supported by the spacer ring, and the upper side and the lower side of the spacer ring are provided with two different types of fillers (namely PTFE combined filler and graphite combined filler), so that the combined seal of the different types of fillers is provided, even if some fillers are worn, other fillers can still be normally sealed, and the leakage risk is reduced; the method can also adapt to the influence of high-temperature, high-pressure and strong-permeability fluid media, and the combined structure of PTFE combined filler and graphite combined filler can be further optimized in the follow-up process; in addition, the annular pressing sleeve can better press the packing in the packing box under the locking cooperation effect, so that the packing sealing effect is ensured, and the subsequent locking can be conveniently carried out again when loosening occurs. Thus, the present utility model is a substantial feature and improvement over the prior art.
Drawings
The details and working principles of the embodiments and examples of the present utility model are described below with reference to the drawings.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged view of a in fig. 1.
In the figure: 1. a valve body; 2. a valve cover; 3. a core; 4. a valve stem; 5. a rod seat; 6. a stuffing box; 7. PTFE combined filler; 8. graphite combined filler; 9. an annular pressing sleeve; 10. a pressing plate; 11. a locking bolt; 12. a lock nut; 13. a multi-layer V-shaped packing ring; 14. an annular sleeve body; 15. an O-shaped sealing ring; 16. an upper fiber packing ring; 17. graphite ring multilayer filler; 18. a lower fiber packing ring; 19. 42-degree high-tightness graphite self-sealing ring; 20. 45-degree low-sealing diamond graphite ring; 21. a connection hole; 22. a boss portion; 23. step concave holes; 24. a spring energy storage sealing ring; 25. a thrust washer; 26. a conical surface; 27. a pre-tightening disc spring; 28. a sealing gasket; 29. an O-ring; 30. and a spacer ring.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some, but not all, embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making inventive efforts are within the scope of this utility model.
Referring to the drawings, in the embodiment of the present embodiment, an anti-dissipation switch ball valve includes a valve body 1, a valve cover 2, a ball core 3, a valve rod 4 and a rod seat 5, where the valve cover 2 is connected to the valve body 1, the ball core 3 is configured between the valve cover 2 and the valve body 1 so as to be opened and closed with a valve seat in the valve cover to cooperate with the valve, the valve rod 4 is connected with the ball core 3, the valve rod 4 drives the ball core 3 to operate, the rod seat 5 is connected to the valve body 1, a packing box 6 is further provided on the rod seat 5, the valve rod 4 passes through the packing box 6, and packing in the packing box 6 will seal the valve rod 4 in a matched manner, so as to avoid leakage in the rotation process of the valve rod 4.
According to the utility model, the packing structure in the packing box 6 is improved, the anti-escape capability is improved, and the leakage risk is reduced.
Wherein, the packing box 6 is provided with PTFE combined packing 7, a spacing ring 30 and graphite combined packing 8 (from bottom to top), the spacing ring 30 is positioned between the PTFE combined packing 7 and the graphite combined packing 8, and the spacing ring 30 is positioned in the packing box and can separate the packing and also play a role of supporting upper and lower side packing, and is sleeved outside the valve rod 4 to cooperate with and support the valve rod 4 to operate; in addition, the upper side and the lower side of the spacing ring 30 form a multi-type sealing effect for two types of fillers (namely PTFE combined filler 7 and graphite combined filler 8), so that the leakage risk is reduced; in addition, the annular pressing sleeve 9 is arranged above the graphite combined packing 8, the pressing plate 10 is arranged above the annular pressing sleeve 9, the locking bolt 11 is arranged between the pressing plate 10 and the rod seat 5, the locking bolt 11 is provided with the locking nut 12 for matching locking, one end of the locking bolt 11 is connected to the rod seat 5, the other end of the locking bolt 11 passes through the through hole of the pressing plate 10 and then is locked by the locking nut 12, the annular pressing sleeve 9 can be pressed by the pressing plate 10 through locking matching, and then the packing is in a required pressing state through matching of the annular pressing sleeve 9, so that the packing sealing effect is ensured, and the locking operation is convenient.
In the anti-escape switch type ball valve, by optimizing the filler structure in the stuffing box 6, the anti-escape capability is improved, the leakage risk is reduced, the packing is separated and supported by the spacer ring 30 in the stuffing box 6, and the upper side and the lower side of the spacer ring 30 are provided with two different types of packing (namely PTFE combined packing 7 and graphite combined packing 8), so that the combined packing of different types is provided, even if some of the packing is worn, the other packing can still be normally sealed, and the leakage risk is reduced; the combined structure of the PTFE combined filler 7 and the graphite combined filler 8 can be further optimized later; in addition, the annular pressing sleeve 9 can better press the packing in the packing box 6 under the locking cooperation effect, so that the packing sealing effect is ensured, and the subsequent locking can be conveniently carried out again when loosening occurs.
The following optimizations or further description can be made on the basis of the above embodiments, respectively.
For example, the PTFE composite packing 7 may be formed by arranging multiple layers of V-shaped packing rings 13 (made of PTFE polytetrafluoroethylene) up and down, and the self-sealing principle is formed by using the angle difference between the upper and lower layers of V-shaped structures, so that the sealing effect is higher in the compression process, and the angle difference may be between 90 degrees and 110 degrees.
For example, the partition ring 30 comprises an annular sleeve body 14, O-shaped sealing rings 15 are respectively arranged on the inner wall and the outer wall of the annular sleeve body 14, the partition ring 30, the valve rod 4 and the stuffing box 6 (inner wall) can be matched and sealed through the O-shaped sealing rings 15, annular grooves can be respectively arranged on the inner wall and the outer wall of the annular sleeve body 14 for the installation and arrangement of the O-shaped sealing rings 15, and the space in the partition ring 30 and the stuffing box 6 is fully utilized.
For example, the graphite composite packing 8 comprises an upper fiber packing ring 16, a graphite ring multi-layer packing 17 and a lower fiber packing ring 18, wherein the graphite ring multi-layer packing 17 is positioned between the upper fiber packing ring 16 and the lower fiber packing ring 18, and the composite mode can realize the low torque and high sealing compensation effect on the valve rod 4. For example, the graphite ring multi-layer packing 17 includes 42 degree high tightness graphite self-sealing rings 19 at the upper and lower ends (layers) and 45 degree low tightness diamond graphite rings 20 at the middle (layers), and the angle difference between them can also improve the sealing effect when pressing.
The top of valve body 1 is equipped with connecting hole 21, and the bottom of pole seat 5 has boss portion 22, and boss portion 22 disposes in connecting hole 21, and the valve rod 4 hole department of boss portion 22 is equipped with step shrinkage pool 23, disposes spring energy storage sealing washer 24 in the step shrinkage pool 23, still sets up thrust washer 25 between the terminal surface of boss portion 22 and connecting hole 21, and spring energy storage sealing washer 24 is located the upside of thrust washer.
After the spring energy storage sealing ring 24 is arranged in the step concave hole 23, the spring is pressed and deformed to provide sealing force and provide load required by sealing under low pressure; when the medium pressure enters the groove, the sealing force is overlapped, so that the sealing lip is more closely attached to the contact surface of the step concave hole 23 and the valve rod 4, and an excellent sealing effect is formed.
The conical surfaces 26 are respectively arranged between the pressing plate 10 and the annular pressing sleeve 9 for matching connection, so that the coaxiality is better, the stress of the annular pressing sleeve 9 is more balanced, the annular pressing sleeve 9 is not easy to press off when pressing the filler, and the filler is relatively more uniform when being pressed. A pre-tightening disc spring 27 is arranged between the pressing plate 10 and the locking nut 12, so that the packing can keep a relatively constant pressing force, and meanwhile, the overpressure phenomenon is not easy to occur; in addition, when the valve rod is used for a long time, the pre-tightening disc spring 27 can automatically compensate when the filler is subjected to a small amount of creep, so that the sealing durability is ensured, and the sealing at the valve rod 4 can meet the requirement of low dissipation leakage.
Sealing gaskets 28 (such as low-leakage metal winding gaskets) and O-shaped rings 29 are arranged between the valve body 1 and the valve cover 2 and between the valve body 1 and the rod seat 5, and double sealing promotes the leakage prevention capability between the valve body 1 and the valve cover 2 and between the valve body and the rod seat 5.
Claims (7)
1. The utility model provides an anti-escape switch type ball valve, including valve body (1), valve gap (2), ball core (3), valve rod (4) and pole seat (5), valve gap (2) are connected on valve body (1), and ball core (3) dispose between valve gap (2) and valve body (1), and valve rod (4) are connected with ball core (3), and pole seat (5) are connected on valve body (1), still are equipped with packing box (6) on pole seat (5), and packing box (6) are passed in valve rod (4), its characterized in that:
PTFE combined filler (7), a spacer ring (30) and graphite combined filler (8) are arranged in the filler box (6), the spacer ring (30) is positioned between the PTFE combined filler (7) and the graphite combined filler (8), an annular pressing sleeve (9) is arranged above the graphite combined filler (8), a pressing plate (10) is arranged above the annular pressing sleeve (9), a locking bolt (11) is arranged between the pressing plate (10) and the rod seat (5), and the locking bolt (11) is provided with a locking nut (12);
The graphite combined packing (8) comprises an upper fiber packing ring (16), a graphite ring multi-layer packing (17) and a lower fiber packing ring (18).
2. The anti-escape switch-type ball valve of claim 1, wherein: the PTFE combined packing (7) comprises a plurality of layers of V-shaped packing rings (13) which are arranged up and down.
3. The anti-escape switch-type ball valve of claim 1, wherein: the spacing ring (30) comprises an annular sleeve body (14), and O-shaped sealing rings (15) are respectively arranged on the inner hole wall and the outer ring wall of the annular sleeve body (14).
4. The anti-escape switch-type ball valve of claim 1, wherein: the graphite ring multi-layer packing (17) comprises 42-degree high-tightness graphite self-sealing rings (19) positioned at the upper end and the lower end and 45-degree low-tightness diamond-shaped graphite rings (20) positioned in the middle.
5. The anti-escape switch-type ball valve of claim 1, wherein: the top of valve body (1) is equipped with connecting hole (21), and the bottom of pole seat (5) has boss portion (22), and boss portion (22) disposes in connecting hole (21), and valve rod (4) hole department of boss portion (22) is equipped with step shrinkage pool (23), disposes spring energy storage sealing washer (24) in step shrinkage pool (23), still sets up thrust washer (25) between the terminal surface of boss portion (22) and connecting hole (21), and spring energy storage sealing washer (24) are located the upside of thrust washer.
6. The anti-escape switch-type ball valve of claim 1, wherein: conical surfaces (26) are respectively arranged between the pressing plate (10) and the annular pressing sleeve (9) for matching connection, and a pre-tightening disc spring (27) is arranged between the pressing plate (10) and the locking nut (12).
7. The anti-escape switch-type ball valve of claim 1, wherein: sealing gaskets (28) and O-shaped rings (29) are arranged between the valve body (1) and the valve cover (2) as well as between the valve seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801825.0U CN220891138U (en) | 2023-10-19 | 2023-10-19 | Anti-dissipation switch type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801825.0U CN220891138U (en) | 2023-10-19 | 2023-10-19 | Anti-dissipation switch type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891138U true CN220891138U (en) | 2024-05-03 |
Family
ID=90840423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322801825.0U Active CN220891138U (en) | 2023-10-19 | 2023-10-19 | Anti-dissipation switch type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891138U (en) |
-
2023
- 2023-10-19 CN CN202322801825.0U patent/CN220891138U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |