CN216131440U - Low-temperature self-operated pressure regulating valve - Google Patents
Low-temperature self-operated pressure regulating valve Download PDFInfo
- Publication number
- CN216131440U CN216131440U CN202122879830.4U CN202122879830U CN216131440U CN 216131440 U CN216131440 U CN 216131440U CN 202122879830 U CN202122879830 U CN 202122879830U CN 216131440 U CN216131440 U CN 216131440U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- cover
- sealing
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a low-temperature self-operated pressure regulating valve which comprises a valve body, a valve cover, a pressure regulating assembly and a valve rod, wherein the valve cover is arranged on the valve body; the valve is characterized by also comprising a corrugated sealing component which is arranged on the valve rod and improves the sealing performance of the valve body; and the valve body is also provided with a pressure control cylinder for preventing the medium from flowing backwards. According to the utility model, through the arrangement of the corrugated sealing assembly, the corrugated sealing assembly and the filler are utilized to form secondary sealing on the valve body, so that the sealing property of the valve body is improved; through the setting of accuse pressure jar, utilize accuse to press the valve rear pressure of jar to drive the valve rod and set up the case motion on the valve rod and close the valve body when big to prevent the medium refluence, guarantee the normal use of valve body.
Description
Technical Field
The utility model relates to the technical field of pressure regulating valves, in particular to a low-temperature self-operated pressure regulating valve.
Background
Self-operated pressure regulating valve, the utilization is transferred medium self energy and is the power supply, introduce actuating mechanism control case position, change the pressure differential and the flow at both ends, make pressure stability before the valve (or behind the valve), among the prior art, most only seal the valve body through the filler in the governing valve, cause the leakage after using for a long time easily, thereby the leakproofness of valve body has been reduced, and produce the phenomenon of medium refluence easily when the valve after the pressure is greater than before the valve of valve body, thereby influence the normal use of valve body. Therefore, a low-temperature self-operated pressure regulating valve is provided.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, most of regulating valves only seal a valve body through packing, leakage is easily caused after long-time use, the sealing performance of the valve body is reduced, and the normal use of the valve body is influenced by the phenomenon that a medium flows backwards easily when the pressure behind the valve body is higher than the pressure in front of the valve body.
In order to achieve the purpose, the utility model provides the following technical scheme: a low-temperature self-operated pressure regulating valve comprises a valve body, a valve cover arranged on the valve body, a pressure regulating assembly arranged on the valve cover and a valve rod connected with the pressure regulating assembly; the valve is characterized by also comprising a corrugated sealing component which is arranged on the valve rod and improves the sealing performance of the valve body; and the valve body is also provided with a pressure control cylinder for preventing the medium from flowing backwards.
Preferably, the corrugated sealing assembly comprises a sealing bottom plate installed between the valve body and the valve cover, a sealing upper plate installed on the valve rod, and a sealing corrugated pipe installed between the sealing bottom plate and the sealing upper plate; the pressure control cylinder is connected with the bottom of the valve body through a bolt.
Preferably, the pressure control cylinder comprises a connecting pipe arranged on the valve body through a bolt, a cylinder body arranged on the connecting pipe, a cylinder cover arranged on the cylinder body and a corrugated assembly arranged between the cylinder body and the cylinder cover; the corrugated assembly is connected with the valve rod through threads; the connecting pipe, the cylinder body and the cylinder cover are fixedly connected through bolts; the connecting pipe is also provided with a plurality of air inlets.
Preferably, the bellows assembly includes a lower fixing plate installed between the cylinder block and the cylinder head, an upper fixing plate connected to the valve rod, and a bellows installed between the upper fixing plate and the lower fixing plate.
Preferably, the pressure regulating assembly comprises a spring base installed on the valve cover through threads, a spring seat installed on the valve rod and a pressure regulating spring installed between the spring base and the spring seat; the valve rod is also provided with an adjusting nut; and the spring seat is also provided with an outer cover.
Preferably, a filler is arranged between the valve cover and the valve rod; a packing pressing plate is arranged on the packing; the packing pressing plate is fixed on the valve cover through screws.
Preferably, a pressure plate is further mounted on the valve cover; the pressure plate is fixed on the valve body through a bolt; the valve cover is fixedly arranged on the valve body through a pressing plate; a valve seat is also arranged in the valve body; and the valve rod is provided with a valve core matched with the valve seat.
The utility model has the beneficial effects that: through the arrangement of the corrugated sealing assembly, the corrugated sealing assembly and the filler are utilized to form secondary sealing on the valve body, so that the sealing property of the valve body is improved;
through the setting of accuse pressure jar, utilize the accuse to press the jar to drive the valve rod and set up the case motion on the valve rod and close the valve body when valve rear pressure is big to prevent the medium refluence, guarantee the normal use of valve body.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partial enlarged view of the utility model at a in fig. 1.
Fig. 3 is a schematic structural diagram of the pressure control cylinder of the present invention.
Illustration of the drawings: 1, a valve body; 101 a valve seat; 2, a valve cover; 3, a pressure regulating component; 301 a spring mount; a 302 spring seat; 303 a pressure regulating spring; 304 adjusting the nut; 305 an outer cover; 4, a valve rod; 401 a valve core; 5 a bellows seal assembly; 501 sealing the bottom plate; 502 sealing the upper plate; 503 sealing the bellows; 6, controlling a pressure cylinder; 601. a cylinder body; 602, a cylinder cover; 603 a corrugated assembly; 604 lower fixing plate; 605 fixing the plate; 606 a bellows; 607 taking over; 608 an air inlet; 7, filling; 701 packing press plate; 8 pressing plates.
Detailed Description
The utility model will be further described with reference to the drawings.
Referring to fig. 1, the low-temperature self-operated pressure regulating valve in this embodiment includes a valve body 1, a valve cover 2 installed on the valve body 1, a pressure regulating assembly 3 installed on the valve cover 2, and a valve rod 4 connected to the pressure regulating assembly 3; the valve is characterized by also comprising a corrugated sealing component 5 which is arranged on the valve rod 4 and improves the sealing performance of the valve body 1; the valve body 1 is also provided with a pressure control cylinder 6 for preventing the medium from flowing backwards; through the arrangement of the corrugated sealing assembly 5, the corrugated sealing assembly 5 and the packing 7 are utilized to form secondary sealing on the valve body 1, so that the sealing performance of the valve body 1 is improved; through the setting of accuse pressure jar 6, utilize accuse pressure jar 6 to drive valve rod 4 and the motion of case 401 of setting on valve rod 4 to close valve body 1 when valve rear pressure is big to prevent the medium refluence, guarantee valve body 1's normal use.
Referring to fig. 1-2, the bellows seal assembly 5 includes a sealing bottom plate 501 installed between the valve body 1 and the bonnet 2, a sealing top plate 502 installed on the valve stem 4, and a sealing bellows 503 welded and installed between the sealing bottom plate 501 and the sealing top plate 502; the pressure control cylinder 6 is connected with the bottom of the valve body 1 through a bolt; through spacing fixing sealing bottom plate 501 between valve body 1 and bonnet 2, sealing upper plate 502 passes through the screw thread and installs on valve rod 4, forms secondary seal through welding installation sealing bellows 503 and filler 7 between sealing bottom plate 501 and the sealing upper plate 502 to valve body 1 to improve the leakproofness of valve body 1.
Referring to fig. 1-3, the pressure control cylinder 6 includes a connection pipe 607 mounted on the valve body 1 by bolts, a cylinder body 601 mounted on the connection pipe 607, a cylinder cover 602 mounted on the cylinder body 601, and a bellows assembly 603 mounted between the cylinder body 601 and the cylinder cover 602; the bellows assembly 603 is connected to the valve stem 4 by a screw thread; the connecting pipe 607, the cylinder body 601 and the cylinder cover 602 are fixedly connected through bolts; the connecting pipe 607 is also provided with a plurality of air inlets 608; the bellows assembly 603 comprises a lower fixing plate 604 arranged between the cylinder body 601 and the cylinder cover 602, an upper fixing plate 605 connected with the valve rod 4 through threads, and a bellows 606 welded between the upper fixing plate 605 and the lower fixing plate 604; the upper fixing plate 605 is pushed to move downwards by the pressure behind the valve, the upper fixing plate 605 drives the valve rod 4 to move downwards, meanwhile, the corrugated pipe 606 stretches and retracts, and the valve rod 4 drives the valve core 401 to move downwards to be closed with the valve seat 101, so that the phenomenon of backflow of a medium is prevented, and the normal use of the valve body 1 is guaranteed.
Referring to fig. 1, the pressure regulating assembly 3 includes a spring base 301 mounted on the bonnet 2 through threads, a spring seat 302 mounted on the valve rod 4, and a pressure regulating spring 303 mounted between the spring base 301 and the spring seat 302; the valve rod 4 is also provided with an adjusting nut 304; the spring seat 302 is also provided with an outer cover 305; a packing 7 is arranged between the valve cover 2 and the valve rod 4; a packing pressing plate 701 is installed on the packing 7; the packing pressing plate 701 is fixed on the valve cover 2 through screws; the valve cover 2 is also provided with a pressing plate 8; the pressure plate 8 is fixed on the valve body 1 through bolts; the valve cover 2 is fixedly arranged on the valve body 1 through a pressing plate 8; a valve seat 101 is also arranged in the valve body 1; a valve core 401 matched with the valve seat 101 is arranged on the valve rod 4; by rotating the adjustment nut 304, the spring seat 302 is pressed against the spring seat 302 due to upward movement without the limit of the adjustment nut 304 or due to reverse rotation of the adjustment nut 304, pushing the spring seat 302 downward along the stem 4, thereby adjusting the pressure at which the valve body 1 opens.
In the working process of the utility model, when the pressure behind the valve of the valve body 1 is higher than the pressure before the valve, the medium behind the valve enters the cylinder body 601 through the air inlet 608 on the connecting pipe 607, and the pressure in the cylinder body 601 is increased, then the pressure behind the valve pushes the upper fixing plate 605 to move downwards along the cylinder body 601, the upper fixing plate 605 drives the valve rod 4 to move downwards, and the bellows 606 is compressed, the valve rod 4 drives the valve core 401 and the spring seat 302 to move downwards, the spring seat 302 drives the adjusting spring 303 to compress, the valve core 401 and the valve seat 101 in the valve body 1 are closed, so that the valve body 1 is in a closed state, when the pressure behind the valve is lower than the pressure of the adjusting spring 303, the adjusting spring 303 drives the spring seat 302 to move upwards due to elasticity, so that the adjusting spring 303 is restored to the original state, the spring seat 302 drives the valve rod 4 to move upwards, the valve rod 4 drives the valve core 401 and the upper fixing plate 605 to move upwards, the upper fixing plate 605 drives one end of the bellows 606 to move upwards, the bellows 606 is restored to the original state, and the valve body 1 is in the opened state.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (7)
1. A low-temperature self-operated pressure regulating valve comprises a valve body (1), a valve cover (2) arranged on the valve body (1), a pressure regulating assembly (3) arranged on the valve cover (2) and a valve rod (4) connected with the pressure regulating assembly (3); the valve is characterized by also comprising a corrugated sealing component (5) which is arranged on the valve rod (4) and improves the sealing performance of the valve body (1); and the valve body (1) is also provided with a pressure control cylinder (6) for preventing the medium from flowing backwards.
2. The low temperature self-operated pressure regulator valve according to claim 1, wherein: the corrugated sealing assembly (5) comprises a sealing bottom plate (501) arranged between the valve body (1) and the valve cover (2), a sealing upper plate (502) arranged on the valve rod (4) and a sealing corrugated pipe (503) arranged between the sealing bottom plate (501) and the sealing upper plate (502); the pressure control cylinder (6) is connected with the bottom of the valve body (1) through a bolt.
3. The low temperature self-operated pressure regulator valve according to claim 2, wherein: the pressure control cylinder (6) comprises a connecting pipe (607) arranged on the valve body (1) through a bolt, a cylinder body (601) arranged on the connecting pipe (607), a cylinder cover (602) arranged on the cylinder body (601), and a corrugated assembly (603) arranged between the cylinder body (601) and the cylinder cover (602); the corrugated component (603) is connected with the valve rod (4) through threads; the connecting pipe (607), the cylinder body (601) and the cylinder cover (602) are fixedly connected through bolts; the connecting pipe (607) is also provided with a plurality of air inlets (608).
4. The low temperature self-operated pressure regulator valve according to claim 3, wherein: the corrugated assembly (603) comprises a lower fixing plate (604) arranged between a cylinder body (601) and a cylinder cover (602), an upper fixing plate (605) connected with the valve rod (4) and a corrugated pipe (606) arranged between the upper fixing plate (605) and the lower fixing plate (604).
5. The low temperature self-operated pressure regulator valve according to claim 1, wherein: the pressure regulating assembly (3) comprises a spring base (301) arranged on the valve cover (2) through threads, a spring seat (302) arranged on the valve rod (4) and a pressure regulating spring (303) arranged between the spring base (301) and the spring seat (302); the valve rod (4) is also provided with an adjusting nut (304); an outer cover (305) is further mounted on the spring seat (302).
6. The low temperature self-operated pressure regulator valve according to claim 5, wherein: a filler (7) is arranged between the valve cover (2) and the valve rod (4); a packing pressing plate (701) is arranged on the packing (7); the packing pressing plate (701) is fixed on the valve cover (2) through screws.
7. The low temperature self-operated pressure regulator valve according to claim 1, wherein: a pressing plate (8) is also arranged on the valve cover (2); the pressure plate (8) is fixed on the valve body (1) through bolts; the valve cover (2) is fixedly arranged on the valve body (1) through a pressure plate (8); a valve seat (101) is also arranged in the valve body (1); and a valve core (401) matched with the valve seat (101) is arranged on the valve rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122879830.4U CN216131440U (en) | 2021-11-23 | 2021-11-23 | Low-temperature self-operated pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122879830.4U CN216131440U (en) | 2021-11-23 | 2021-11-23 | Low-temperature self-operated pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216131440U true CN216131440U (en) | 2022-03-25 |
Family
ID=80779126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122879830.4U Active CN216131440U (en) | 2021-11-23 | 2021-11-23 | Low-temperature self-operated pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216131440U (en) |
-
2021
- 2021-11-23 CN CN202122879830.4U patent/CN216131440U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216131440U (en) | Low-temperature self-operated pressure regulating valve | |
| CN101354081B (en) | Electric regulating valve capable of completely cutting off seal | |
| CN104514901A (en) | Plastic sealing type pilot-operated safety valve | |
| CN111750113B (en) | Special equipment for gas pressure regulation | |
| CN202691136U (en) | Nuclear grade M type pneumatic directly-through membrane valve | |
| CN101354094A (en) | Small electric valve for shock-absorbing protecting torsion force | |
| CN207715756U (en) | The low temperature electric control valve of preload adjustable | |
| CN105650314A (en) | Self-operated type pressure stabilizing balance valve | |
| CN210266144U (en) | Bellows self-operated regulating valve | |
| CN202469113U (en) | Air reducing valve for ship | |
| CN214838417U (en) | Stop valve | |
| CN105937630B (en) | Heat dissipation type double-valve-clack adjusting stop type air exhaust valve | |
| CN203571134U (en) | Plastic sealing pilot operated safety valve | |
| CN203477358U (en) | Self-sealing high-pressure steam control valve | |
| CN214119069U (en) | External pilot type nitrogen release valve | |
| CN216343971U (en) | Electric high-performance double-eccentric high-pressure butterfly valve | |
| CN202545915U (en) | Shock-restraining zero-leakage adjusting valve for spring | |
| CN201606505U (en) | Multifunctional stop valve | |
| CN216447449U (en) | Self-operated pressure valve with good sealing performance | |
| CN201069015Y (en) | Shock absorption protection small torsion electric valve | |
| CN218543196U (en) | Low-temperature deep-cooling angular single-seat regulating valve | |
| CN220956251U (en) | Pressure-adjustable hydraulic one-way valve | |
| CN201032047Y (en) | Pressure adjustable steam trap | |
| CN216343924U (en) | Energy-saving auxiliary structure of electric regulating valve | |
| CN215371144U (en) | Self-operated nitrogen sealing valve applied to storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |