CN220505905U - Pressure vacuum release valve - Google Patents
Pressure vacuum release valve Download PDFInfo
- Publication number
- CN220505905U CN220505905U CN202321940015.7U CN202321940015U CN220505905U CN 220505905 U CN220505905 U CN 220505905U CN 202321940015 U CN202321940015 U CN 202321940015U CN 220505905 U CN220505905 U CN 220505905U
- Authority
- CN
- China
- Prior art keywords
- pressure
- fixedly connected
- block
- top cover
- pressure vacuum
- 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
- 230000003139 buffering effect Effects 0.000 claims abstract description 8
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
The utility model provides a pressure vacuum release valve, relates to the technical field of vacuum release valves, and solves the problems that the prior pressure vacuum release valve is inconvenient in that the opening pressure is regulated according to the gravity of a top cover, and the top cover is frequently opened to release pressure due to lack of buffering, so that the service life of the top cover is influenced. The utility model comprises a valve body, an exhaust pipe arranged on the valve body, and a top cover arranged at the upper end of the exhaust pipe, wherein a limit supporting plate is arranged above the top cover and connected to the exhaust pipe, and the utility model also comprises an adjusting component arranged on the supporting plate and used for adjusting the release pressure of the top cover, and a buffer component arranged in the middle part in the exhaust pipe and used for buffering the pressure. The beneficial effects of the utility model are as follows: the direct collision of excessive pressure to the top cover is avoided, frequent opening of the top cover is not needed, and the service life is prolonged; the release pressure for opening the top cover can be adjusted according to the requirement, so that the reliability of the opening pressure is ensured.
Description
Technical Field
The utility model relates to the technical field of vacuum release valves, in particular to a pressure vacuum release valve.
Background
The pressure release valve is mainly used for a storage bin or an ash warehouse, and can ensure that the storage bin or the ash warehouse is not affected by excessive positive pressure or negative pressure when the air charging and discharging and abnormal temperature change occur, and can be used as excellent secondary or standby insurance and also can be applied to other occasions with explosion-proof requirements. The pressure release valve is generally arranged at the top of the storage warehouse, and when the internal pressure of the storage warehouse exceeds a setting value, the positive pressure valve plate of the pressure release valve is automatically opened to release the excessive pressure in the storage warehouse; when the negative pressure in the storage exceeds a setting value, the negative pressure valve plate of the pressure release valve is automatically opened to supplement fresh air into the storage, so that the storage is protected from running safely.
The existing pressure vacuum release valve, such as the utility model of patent CN218895017U, provides a pressure vacuum release valve, the bottom end of the top cover is attached to the upper side of the exhaust pipe, and the second fixing bolt is screwed on the middle thread of the inner side of the limit supporting plate to enable the second fixing bolt to firmly and reliably attach the lower side of the top cover to the upper side of the exhaust pipe, so that the problem that the protection of an ash warehouse is not comprehensive due to the fact that the internal air pressure is influenced by excessive positive pressure and excessive low negative pressure is solved; but its top cap opening release pressure is adjusted according to the gravity of top cap, and is very inconvenient, and direct collision top cap lacks the buffering when the excessive pressure simultaneously, and when the excessive pressure is not big, also can frequent opening top cap carry out the pressure release, influences the life of top cap.
Disclosure of Invention
The utility model aims to solve the problems that the prior pressure vacuum release valve is inconvenient in that the opening pressure is regulated according to the gravity of a top cover, and the top cover is frequently opened to release pressure due to lack of buffering, so that the service life of the top cover is influenced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pressure vacuum relief valve, it includes the valve body, sets up blast pipe on the valve body, sets up the top cap in blast pipe upper end, its characterized in that: the top cap top is provided with spacing backup pad, spacing backup pad is connected on the blast pipe, still including setting up the adjusting part that is used for adjusting the release pressure of top cap in the backup pad, setting up the buffer unit that middle part is used for buffering pressure in the blast pipe.
The further improvement is that: the buffer assembly comprises an inner fixing ring fixedly connected to the inner wall of the middle of the exhaust pipe, a second piston block is connected to an upper port of the inner fixing ring in a sliding mode, a middle block is fixedly connected to the upper end of the second piston block, a plurality of connecting rods are fixedly connected to the side wall of the middle block, inserting blocks are fixedly connected to the lower ends of the end portions, far away from the middle block, of the connecting rods, positioning grooves matched with the connecting rods in the direction are formed in the positions, corresponding to the inserting blocks, of the upper surface of the inner fixing ring, a second spring is arranged at the inner bottom of each positioning groove, and each inserting block is inserted into each positioning groove and connected with the top end of each second spring.
The further improvement is that: and the middle of the bottom surface of the middle block is fixedly connected with the top of the second piston block through a piston rod.
The further improvement is that: the connecting rods are arranged in four, and the four connecting rods are uniformly distributed in an annular mode by taking the center of the middle block as the center of a circle.
The further improvement is that: the adjusting component comprises a fixed sleeve fixedly connected in the middle of the lower surface of the limiting support plate and a movable sleeve fixedly connected in the middle of the upper surface of the top cover, the upper end of the movable sleeve is slidably connected in the fixed sleeve, a sleeve cavity is formed in the movable sleeve and the fixed sleeve, a first spring is arranged in the sleeve cavity, the middle of the limiting support plate is downwards penetrated into the fixed sleeve to form a threaded hole, an adjusting screw is connected to the threaded hole in a threaded mode, and the bottom end of the adjusting screw penetrates through the threaded hole to abut against the first spring.
The further improvement is that: the upper end fixedly connected with of screw hole is used for conveniently rotating adjusting handle of adjusting screw.
The further improvement is that: the bottom of top cap is provided with first piston piece, first piston piece and the gas vent looks adaptation of blast pipe, first piston piece swing joint is on the gas vent of blast pipe.
The further improvement is that: the exhaust pipe is characterized in that supporting lugs are symmetrically and fixedly connected to two side walls of the exhaust pipe, a fixing block is connected to the upper end face of each supporting lug, and one side wall of each limiting supporting plate is fixedly connected to the top end of one side, close to the top cover, of each fixing block through a connecting plate.
The further improvement is that: the upper end face of the supporting lug is connected with a fixed block through a fixed bolt.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
the buffer assembly is arranged, so that the overpressure can be buffered in advance, the overpressure is prevented from directly colliding with the top cover, the top cover can be prevented from being opened frequently if the overpressure is in a buffer range, and the service life is prolonged;
the adjusting component is arranged to be matched with the top cover, the elastic potential energy is adjusted by pressing down the spring through the adjusting bolt, the release pressure for opening the top cover can be adjusted according to the requirement, the weight of the valve is reduced compared with that of a traditional lift-cover type release valve, the sensitivity is improved, the maintenance time is short, and the reliability of the opening pressure is ensured.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the present utility model;
FIG. 3 is an enlarged view of portion A of FIG. 2 in accordance with the present utility model;
FIG. 4 is an enlarged view of portion B of FIG. 2 in accordance with the present utility model;
fig. 5 is a schematic view of the internal top view structure of the present utility model.
Reference numerals illustrate: the valve body 1, the exhaust pipe 2, the supporting lug 21, the fixed block 22, the fixed bolt 23, the connecting plate 24, the limiting supporting plate 3, the threaded hole 31, the fixed sleeve 32, the movable sleeve 33, the sleeve cavity 34, the first spring 35, the adjusting screw 4, the adjusting handle 41, the top cover 5, the first piston block 51, the inner fixed ring 6, the positioning groove 61, the second spring 62, the middle block 7, the connecting rod 71, the piston rod 72, the plug block 73 and the second piston block 8.
Detailed Description
Referring to fig. 1 to 5, the technical scheme adopted in this embodiment is as follows: the pressure vacuum release valve comprises a valve body 1, an exhaust pipe 2 arranged on the valve body 1, and a top cover 5 arranged at the upper end of the exhaust pipe 2, wherein a limiting support plate 3 is arranged above the top cover 5, the limiting support plate 3 is connected to the exhaust pipe 2, and the pressure vacuum release valve further comprises an adjusting component arranged on the support plate 3 and used for adjusting the release pressure of the top cover 5, and a buffer component arranged in the middle of the exhaust pipe 2 and used for buffering the pressure.
The further improvement is that: the buffer component comprises an inner fixed ring 6 fixedly connected to the inner wall of the middle part of the exhaust pipe 2, a second piston block 8 is slidingly connected to the upper end opening of the inner fixed ring 6, a middle block 7 is fixedly connected to the upper end of the second piston block 8, a plurality of connecting rods 71 are fixedly connected to the side wall of the middle block 7, inserting blocks 73 are fixedly connected to the lower end of the end part of the connecting rod 71 far away from the middle block 7, positioning grooves 61 matched with the inner fixed ring 6 in direction are formed in the positions, corresponding to the inserting blocks 73, of the upper surface of the inner fixed ring 6, a second spring 62 is arranged at the inner bottom of each positioning groove 61, and each inserting block 73 is inserted into each positioning groove 61 and connected with the top end of each second spring 62.
The further improvement is that: the middle of the bottom surface of the middle block 7 is fixedly connected with the top of the second piston block 8 through a piston rod 72.
The further improvement is that: the four connecting rods 71 are arranged, and the four connecting rods 71 are annularly and uniformly distributed by taking the center of the middle block 7 as the center of the circle.
The further improvement is that: the adjusting component comprises a fixed sleeve 32 fixedly connected to the middle of the lower surface of the limiting support plate 3 and a movable sleeve 33 fixedly connected to the middle of the upper surface of the top cover 5, the upper end of the movable sleeve 33 is slidably connected to the fixed sleeve 32, a sleeve cavity 34 is formed in the movable sleeve 33 and the fixed sleeve 32, a first spring 3 is arranged in the sleeve cavity 34, a threaded hole 31 is formed in the middle of the limiting support plate 3, the middle of the limiting support plate 3 penetrates downwards to the fixed sleeve 32, an adjusting screw 4 is connected to the threaded hole 31 in a threaded mode, and the bottom end of the adjusting screw 4 penetrates through the threaded hole 31 to abut against the first spring 35.
The further improvement is that: an adjusting handle 41 for conveniently rotating the adjusting screw 4 is fixedly connected to the upper end of the threaded hole 31.
The further improvement is that: the bottom of the top cover 5 is provided with a first piston block 51, the first piston block 51 is matched with the exhaust port of the exhaust pipe 2, and the first piston block 51 is movably connected to the exhaust port of the exhaust pipe 2.
The further improvement is that: support lugs 21 are symmetrically and fixedly connected to two side walls of the exhaust pipe 2, fixing blocks 22 are connected to the upper end faces of the support lugs 21, and one side wall of a limiting support plate 3 is fixedly connected to the top end of one side, close to the top cover, of the fixing blocks 22 through a connecting plate 24.
The further improvement is that: the upper end face of the supporting lug 21 is connected with a fixed block 22 through a fixed bolt 23.
The working principle of the utility model is as follows: when the pressure is over the buffering range, the top cover can continue to be impacted upwards, the first piston and the top cover are pushed upwards, the air pressure is discharged outwards, the pressure is released, after the air pressure returns to the normal range, the compression that the first spring can receive can rebound, the top cover and the piston move downwards to continue to seal the exhaust pipe, the second piston in the valve body moves downwards, the connecting rod is driven to move downwards through the pull-back force of the second spring, the corresponding middle block moves downwards to drive the second piston to enter the upper port of the inner fixing ring to seal.
While the basic principles and main features of the present utility model and advantages thereof have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described merely by way of illustration of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents. The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (9)
1. The utility model provides a pressure vacuum relief valve, it includes the valve body, sets up blast pipe on the valve body, sets up the top cap in blast pipe upper end, its characterized in that: the top cap top is provided with spacing backup pad, spacing backup pad is connected on the blast pipe, still including setting up the adjusting part that is used for adjusting the release pressure of top cap in the backup pad, setting up the buffer unit that middle part is used for buffering pressure in the blast pipe.
2. The pressure vacuum relief valve of claim 1, wherein: the buffer assembly comprises an inner fixing ring fixedly connected to the inner wall of the middle of the exhaust pipe, a second piston block is connected to an upper port of the inner fixing ring in a sliding mode, a middle block is fixedly connected to the upper end of the second piston block, a plurality of connecting rods are fixedly connected to the side wall of the middle block, inserting blocks are fixedly connected to the lower ends of the end portions, far away from the middle block, of the connecting rods, positioning grooves matched with the connecting rods in the direction are formed in the positions, corresponding to the inserting blocks, of the upper surface of the inner fixing ring, a second spring is arranged at the inner bottom of each positioning groove, and each inserting block is inserted into each positioning groove and connected with the top end of each second spring.
3. The pressure vacuum relief valve of claim 2, wherein: and the middle of the bottom surface of the middle block is fixedly connected with the top of the second piston block through a piston rod.
4. The pressure vacuum relief valve of claim 2, wherein: the connecting rods are arranged in four, and the four connecting rods are uniformly distributed in an annular mode by taking the center of the middle block as the center of a circle.
5. The pressure vacuum relief valve of claim 1, wherein: the adjusting component comprises a fixed sleeve fixedly connected in the middle of the lower surface of the limiting support plate and a movable sleeve fixedly connected in the middle of the upper surface of the top cover, the upper end of the movable sleeve is slidably connected in the fixed sleeve, a sleeve cavity is formed in the movable sleeve and the fixed sleeve, a first spring is arranged in the sleeve cavity, the middle of the limiting support plate is downwards penetrated into the fixed sleeve to form a threaded hole, an adjusting screw is connected to the threaded hole in a threaded mode, and the bottom end of the adjusting screw penetrates through the threaded hole to abut against the first spring.
6. The pressure vacuum relief valve of claim 5, wherein: the upper end fixedly connected with of screw hole is used for conveniently rotating adjusting handle of adjusting screw.
7. The pressure vacuum relief valve of claim 5, wherein: the bottom of top cap is provided with first piston piece, first piston piece and the gas vent looks adaptation of blast pipe, first piston piece swing joint is on the gas vent of blast pipe.
8. The pressure vacuum relief valve of claim 1, wherein: the exhaust pipe is characterized in that supporting lugs are symmetrically and fixedly connected to two side walls of the exhaust pipe, a fixing block is connected to the upper end face of each supporting lug, and one side wall of each limiting supporting plate is fixedly connected to the top end of one side, close to the top cover, of each fixing block through a connecting plate.
9. The pressure vacuum relief valve of claim 8, wherein: the upper end face of the supporting lug is connected with a fixed block through a fixed bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940015.7U CN220505905U (en) | 2023-07-24 | 2023-07-24 | Pressure vacuum release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940015.7U CN220505905U (en) | 2023-07-24 | 2023-07-24 | Pressure vacuum release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220505905U true CN220505905U (en) | 2024-02-20 |
Family
ID=89874207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321940015.7U Active CN220505905U (en) | 2023-07-24 | 2023-07-24 | Pressure vacuum release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220505905U (en) |
-
2023
- 2023-07-24 CN CN202321940015.7U patent/CN220505905U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220505905U (en) | Pressure vacuum release valve | |
| CN208548395U (en) | A kind of safety device of the explosion-proof waterproof of battery pack | |
| CN109139658A (en) | One kind is from pressure release bolt | |
| CN210978328U (en) | Hydraulic buffer with adjustable damping | |
| CN210949443U (en) | Tail pin of hydraulic cylinder | |
| CN210607343U (en) | Lithium titanate battery cover plate | |
| CN205402160U (en) | Pneumatic lifter of self tightening sealing | |
| CN214197070U (en) | Damping spring support | |
| CN215406215U (en) | Unbalance loading absorber of static load test jack | |
| CN214944345U (en) | Nitrogen safety valve for coal mine hydraulic support | |
| CN213478809U (en) | Hydraulic cylinder with good sealing performance | |
| CN207511634U (en) | A kind of buffer of elevator of high resiliency | |
| CN221443435U (en) | High-pressure safety valve | |
| CN213745089U (en) | Emergency relief valve | |
| CN215522122U (en) | Safety valve convenient for adjusting pressure value | |
| CN210397278U (en) | Energy storage device | |
| CN208397177U (en) | Cooling module shock pad | |
| CN218207592U (en) | Triple protection structure of explosion-proof cylinder safety nitrogen spring | |
| CN221034240U (en) | Exhaust structure and warm isostatic pressing machine | |
| CN218670789U (en) | Integrated self-recovery type pressure relief device | |
| CN219529462U (en) | Hydraulic buffer oil cylinder | |
| CN216682059U (en) | Thread air compression lifting support device | |
| CN219809203U (en) | Novel telescopic cylinder piston rod | |
| CN220249039U (en) | Exhaust valve | |
| CN221401848U (en) | Valve body fitting for safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |