CN221443335U - Bellows stop valve - Google Patents
Bellows stop valve Download PDFInfo
- Publication number
- CN221443335U CN221443335U CN202323181693.2U CN202323181693U CN221443335U CN 221443335 U CN221443335 U CN 221443335U CN 202323181693 U CN202323181693 U CN 202323181693U CN 221443335 U CN221443335 U CN 221443335U
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- valve
- bellows
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- clack
- main
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- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims description 18
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a bellows stop valve, comprising: valve body and the valve gap of setting on the valve body, be provided with the valve rod in the valve body, the cover is equipped with the bellows on the valve rod, the valve rod bottom is provided with balanced case subassembly, balanced case subassembly includes: the main valve clack is connected with the balance valve core through a connecting shaft, the main valve clack is arranged on the connecting shaft in a sliding mode, and a noise reduction orifice is arranged on the main valve clack. The utility model has the advantages that when the valve is opened, the balance valve core is opened firstly, gas or liquid firstly balances the air pressure at two sides through the noise reduction throttle hole, noise is reduced, the pressure balance of the inlet and the outlet of the valve is realized, then the main valve of the stop valve is opened slowly, and the valve is opened lightly under large-specification and high-pressure medium; the balance valve core is tightly pressed on the main valve clack, the valve clack is tightly sealed, and the whole stop valve has better sealing performance.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a corrugated pipe stop valve.
Background
The stop valve is widely applied in industrial production due to the characteristics of good tightness, small switching stroke, simple and convenient operation, convenient maintenance and the like. The valve rod of the conventional stop valve adopts a packing sealing structure, so that the sealing performance of the valve rod is ensured to be tightly sealed by packing and a gland, the friction force between the valve rod and the packing increases the switching torque, the phenomena of valve rod running, overflowing, dripping, leaking and the like are easy to occur in use, the large-caliber stop valve has larger opening torque under the working condition of high pressure difference, and the valve clack cannot be sealed. For example, patent application number 202210323504.1 discloses a bellows stop valve, which discloses structures such as a bellows, a valve rod, a valve component, a filler and the like, but the torque of a switch is large in the using process, the sealing performance is poor, and the switch is inconvenient. There is a need for a shut-off valve that is suitable for large calibre, convenient to open and close, and good in sealing performance.
Disclosure of utility model
In order to solve the technical problems, the utility model provides the corrugated pipe stop valve which has good sealing performance and convenient opening and closing and is suitable for being used in a large-caliber and large-pressure environment.
Specifically, the utility model discloses a bellows stop valve, which comprises: valve body and the valve gap of setting on the valve body, be provided with the valve rod in the valve body, the cover is equipped with the bellows on the valve rod, the valve rod bottom is provided with balanced case subassembly, balanced case subassembly includes: the main valve clack is connected with the balance valve core through a connecting shaft, the main valve clack is arranged on the connecting shaft in a sliding mode, and a noise reduction orifice is arranged on the main valve clack.
The technical scheme has the advantages that when the valve is opened, the balance valve core is firstly opened, gas or liquid firstly balances the air pressure at two sides through the noise reduction orifice, noise is reduced, the pressure balance of the inlet and the outlet of the valve is realized, then the main valve of the stop valve is slowly opened, and the valve is opened lightly under large-specification and high-pressure medium; the balance valve core is tightly pressed on the main valve clack, the valve clack is tightly sealed, and the whole stop valve has better sealing performance.
Further, a gland is arranged in the valve cover, the valve rod penetrates through the gland, and a sealing ring is arranged on the lower side of the gland.
The technical scheme has the advantages that the gland is arranged to seal the upper end of the valve rod valve cover, the sealing ring is arranged to realize secondary sealing of the valve rod and the valve cover, the sealing performance of the stop valve is improved, and the air leakage and liquid leakage at the valve cover are reduced.
Further, a sealing cover is arranged at the upper end of the corrugated pipe, and the sealing cover is attached to the inner side of the gland.
The technical scheme has the advantages that the impact of gas or liquid on the whole valve cover is reduced by arranging the sealing cover, the service life of the whole valve cover is prolonged, the sealing effect is also achieved, the sealing performance of the whole valve is improved, and the service life of the whole valve can be effectively prolonged.
Further, the end part of the valve rod is provided with an annular protruding part along the outer circumferential direction, a connecting piece is sleeved on the valve rod, and the connecting piece is in threaded connection with the balance valve core.
The technical scheme has the advantages that the annular protruding portion is used for clamping the connecting piece and then is connected with the balance valve core through the connecting piece, the installation of the whole balance valve core assembly is facilitated, the balance valve core assembly mounted on the valve core can be driven to move up and down better through the clamping arrangement of the annular protruding portion in the process of lifting the valve rod for many times, and meanwhile the positions of the connecting piece and the balance valve core assembly can be guaranteed not to deflect in the vertical direction.
Further, the noise reduction orifices are arranged at a plurality of positions on the main valve clack.
The technical scheme has the advantages that the noise reduction throttle holes are formed in the balance valve core, part of air passes through the balance valve core when the balance valve core is opened, air pressure on two sides of the valve is balanced, noise of the air passing through the valve body can be effectively reduced after the air pressure is reduced, and the speed of balancing the air pressure is increased by the throttle holes formed in the plurality of positions, so that the opening and closing speed of the valve is improved.
Further, the corrugated pipe is a double-layer corrugated pipe.
The technical scheme has the advantages that the strength of the corrugated pipe is improved due to the arrangement of the double-layer corrugated pipe, the damage condition of the corrugated pipe caused by high-pressure medium gas or liquid impact is reduced, and the service life of the stop valve is prolonged.
Further, a sealing ring is arranged between the valve body and the valve cover.
The technical scheme has the advantages that the sealing ring is arranged to improve the sealing performance of the valve, and the valve is more suitable for being used in a high-pressure environment.
Further, the balance valve core diameter is smaller than the main valve core diameter.
The technical scheme has the advantages that in the process of opening the stop valve, because the stop valve is internally provided with a high-pressure medium, if the whole main valve clack needs to be opened with great force, the main valve clack is provided with the balance valve clack, the diameter is smaller, the main valve clack can be moved upwards with small force, and then after the air pressures at two sides are balanced through the noise reduction throttle hole, the main valve clack can be opened continuously without great force, so that the valve opening is light and convenient under large specification and high-pressure medium.
Further, an indication wafer is fixedly arranged on the upper portion of the valve rod.
The technical scheme has the advantages that the indication disc is arranged to display the position of the valve core, the opening and closing positions of the valve core assembly can be known through the position of the indication disc, and the indication disc is used for indicating the valve core assembly to be opened or closed in place.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a cross-sectional view showing the whole structure of a bellows stop valve according to the present utility model
FIG. 2 is a schematic diagram showing the cooperation of the balanced valve core assembly and the valve body in the closed state of the present utility model
FIG. 3 is a schematic diagram showing the balance valve core assembly and the valve body in the opened state of the balance valve core of the present utility model
FIG. 4 is a schematic diagram of the main clack open state balanced valve element assembly of the present utility model mated with a valve body.
Wherein reference numerals are as follows:
A valve body 1; an inlet 11; an outlet 12; a valve cover 2; a gland 21; a seal ring 22; a valve stem 3; an annular projection 31; a connecting member 32; a cylindrical pin 33; a bellows 4; a seal cap 41; a main valve flap 5; a noise reduction orifice 51; a balance valve core 6; a connecting shaft 7; an indication wafer 8; and a hand wheel 9.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the present utility model discloses a bellows cut-off valve, comprising: the valve comprises a valve body 1 and a valve cover 2 arranged on the valve body 1, wherein a sealing ring is arranged between the valve body 1 and the valve cover 2, an inlet 11 and an outlet 12 are arranged on two sides of the valve body 1, a valve rod 3 is arranged in the valve body 1, and a corrugated pipe 4 is sleeved on the valve rod 3. The bellows 4 is fixed to be set up on valve rod 3, valve rod 3 bottom is provided with balanced case subassembly, balanced case subassembly includes: the main valve clack 5 and the balance valve core 6 are connected through a connecting shaft 7, the main valve clack is arranged on the connecting shaft 7 in a sliding mode, a stop block is arranged below the connecting shaft 7 to limit the moving position of the main valve clack 5, and a noise reduction orifice 51 is arranged on the main valve clack 5.
The technical scheme has the advantages that when the valve is opened, the balance valve core 6 is firstly opened, gas or liquid firstly balances the air pressure at two sides through the noise reduction throttle hole 51, noise is reduced, the pressure balance of the inlet and the outlet of the valve is realized, then the main valve flap 5 of the stop valve is slowly opened, and the valve is conveniently opened under large-specification and high-pressure medium; when the valve is closed, the balance valve core 6 is tightly pressed on the main valve clack 5, the valve clack is tightly sealed, and the whole stop valve has better sealing performance.
In some embodiments, the valve cover 2 may adopt the following structural scheme, the valve cover 2 is internally provided with a gland 21, the valve rod 3 is arranged through the gland 21, the lower side of the gland 21 is provided with a sealing ring 22, the sealing ring 22 may be a graphite sealing ring 22, the double-layer sealing effect is good, and the outer side of the gland 21 is in threaded connection with the inner side of the valve cover 2, so that the valve is fixed and stable; the valve cover 2 is provided with a connecting block, the middle part of the connecting block is in threaded connection with the upper end of the valve rod 3, the upper part of the connecting block is connected with a hand wheel 9, the hand wheel 9 is rotated to realize the up-and-down movement of the valve rod 3, and the connecting block plays a role in connection and guiding; at the same time, a cylindrical pin 33 is arranged on the side surface of the valve rod 3, a mounting groove which is arranged up and down is arranged on the inner side of the valve cover 2, and the cylindrical pin 33 is fixedly arranged on the side surface of the valve rod 3 and is abutted against the side wall of the mounting groove to prevent the valve rod 3 from rotating.
The technical scheme has the advantages that the gland 21 is used for sealing the upper end of the valve cover 2 of the valve rod 3, the gland 21 also plays a role in guiding, the sealing ring 22 is used for realizing secondary sealing of the valve rod 3 and the valve cover 2, sealing performance of the stop valve is improved, and leakage of the valve cover 2 are reduced.
In some embodiments, the valve cover 2 may adopt the following structural scheme, the upper end of the bellows 4 is provided with a sealing cover 41, and the sealing cover 41 is attached to the inner side of the gland 21.
The technical scheme has the advantages that the impact of gas or liquid on the whole valve cover 2 is reduced by arranging the sealing cover 41, the service life of the whole valve cover 2 is prolonged, the sealing effect is also realized, the sealing performance of the whole valve is improved, and the service life of the whole valve can be effectively prolonged.
In some embodiments, the valve rod 3 may adopt the following structural scheme, an annular protruding portion 31 is provided at the end of the valve rod 3 along the outer circumferential direction, a connecting piece 32 is sleeved on the valve rod 3, and the connecting piece 32 is in threaded connection with the balance valve core 6.
The beneficial effects of adopting above-mentioned technical scheme lie in that, the setting of annular bulge 31 is used for blocking connecting piece 32, then is connected with balanced case 6 through connecting piece 32, makes things convenient for the installation of whole balanced case 6 subassembly, and at the in-process that valve rod 3 of many times risees, drive the balanced case 6 subassembly that installs on the case that the joint setting through annular bulge 31 can be better and reciprocate, can ensure simultaneously that the position of connecting piece 32 and balanced case 6 subassembly does not take place deflection on the vertical direction.
In some embodiments, the noise-reducing orifice 51 may be configured such that the noise-reducing orifice 51 is provided at a plurality of places on the main valve flap 5.
The technical scheme has the advantages that the noise reduction throttle hole 51 is arranged to balance the air pressure at two sides of the valve by partial air when the balance valve core 6 is opened, noise of the air passing through the valve body 1 can be effectively reduced after the air pressure is reduced, and the speed of balancing the air pressure is increased by the throttle holes arranged at a plurality of positions, so that the opening and closing speed of the valve is improved.
In some embodiments, the corrugated tube 4 may adopt the following structural scheme, and the corrugated tube 4 is a double-layer corrugated tube 4.
The technical scheme has the advantages that the strength of the corrugated pipe 4 is improved due to the arrangement of the double-layer corrugated pipe 4, the damage condition of the corrugated pipe 4 caused by high-pressure medium gas or liquid impact is reduced, and the service life of the stop valve is prolonged.
In some embodiments, the balance valve core 6 may adopt a structural scheme in which the balance valve core 6 has a diameter smaller than that of the main valve flap 5.
The technical scheme has the advantages that in the process of opening the stop valve, because the stop valve is internally provided with a high-pressure medium, if the whole main valve clack 5 needs to be opened with great force, the valve clack is opened lightly by arranging the balance valve core 6 on the main valve clack 5, the diameter is smaller and the valve clack can be moved upwards with small force, and then after the air pressures at two sides are balanced through the noise reduction throttle hole 51, the main valve clack 5 can be opened continuously without great force, so that the valve opening is realized lightly under the conditions of large specification and high-pressure medium.
In some embodiments, an indication disc 8 is fixedly arranged on the upper part of the valve rod 3.
The technical scheme has the advantages that the indication disc 8 is used for displaying the position of the valve core assembly, and the opening and closing positions of the valve core assembly can be known through the position of the indication disc 8 and used for indicating the valve core assembly to be opened or closed in place.
It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (9)
1. A bellows stop valve, comprising: valve body (1) and valve gap (2) of setting on valve body (1), be provided with valve rod (3) in valve body (1), the cover is equipped with bellows (4) on valve rod (3), valve rod (3) bottom is provided with balanced case subassembly, balanced case subassembly includes: the main valve clack (5) and the balance valve core (6), the main valve clack (5) and the balance valve core (6) are connected through a connecting shaft (7), the main valve clack (5) is arranged on the connecting shaft (7) in a sliding mode, and a noise reduction orifice (51) is arranged on the main valve clack (5).
2. Bellows shut-off valve according to claim 1, characterized in that a gland (21) is arranged in the valve cap (2), the valve stem (3) is arranged through the gland (21), and a sealing ring (22) is arranged on the underside of the gland (21).
3. The corrugated pipe stop valve according to claim 2, characterized in that a sealing cover (41) is arranged at the upper end of the corrugated pipe (4), and the sealing cover (41) is attached to the inner side of the gland (21).
4. The bellows stop valve according to claim 1, wherein an annular protrusion (31) is provided at an end of the valve rod (3) along an outer circumferential direction, a connecting piece (32) is sleeved on the valve rod (3), and the connecting piece (32) is in threaded connection with the balance valve core (6).
5. A bellows shut-off valve according to claim 1, characterized in that the noise-reducing orifice (51) is provided at a plurality of places on the main valve flap (5).
6. A bellows shut-off valve according to claim 1, characterized in that the bellows (4) is a double-layer bellows.
7. Bellows shut-off valve according to claim 1, characterized in that a sealing ring is arranged between the valve body (1) and the valve cap (2).
8. A bellows shut-off valve according to claim 1, characterized in that the balance spool (6) has a smaller diameter than the main flap (5).
9. A bellows shut-off valve according to claim 1, characterized in that the upper part of the valve stem (3) is fixedly provided with an indicating disc (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323181693.2U CN221443335U (en) | 2023-11-24 | 2023-11-24 | Bellows stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323181693.2U CN221443335U (en) | 2023-11-24 | 2023-11-24 | Bellows stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221443335U true CN221443335U (en) | 2024-07-30 |
Family
ID=92063053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323181693.2U Active CN221443335U (en) | 2023-11-24 | 2023-11-24 | Bellows stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221443335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119309039A (en) * | 2024-12-13 | 2025-01-14 | 厦门厦晖橡胶金属工业有限公司 | A gas pressure reducing valve |
| CN120799177A (en) * | 2025-09-09 | 2025-10-17 | 丽水市盖特阀门有限公司 | High-pressure valve capable of intelligent fault diagnosis and predictive maintenance |
-
2023
- 2023-11-24 CN CN202323181693.2U patent/CN221443335U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119309039A (en) * | 2024-12-13 | 2025-01-14 | 厦门厦晖橡胶金属工业有限公司 | A gas pressure reducing valve |
| CN120799177A (en) * | 2025-09-09 | 2025-10-17 | 丽水市盖特阀门有限公司 | High-pressure valve capable of intelligent fault diagnosis and predictive maintenance |
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