CN220540393U - Gas pressure reducing valve - Google Patents
Gas pressure reducing valve Download PDFInfo
- Publication number
- CN220540393U CN220540393U CN202322035577.3U CN202322035577U CN220540393U CN 220540393 U CN220540393 U CN 220540393U CN 202322035577 U CN202322035577 U CN 202322035577U CN 220540393 U CN220540393 U CN 220540393U
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- Prior art keywords
- valve body
- hole
- seat
- center
- annular
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Links
- 238000007789 sealing Methods 0.000 claims description 64
- 239000012528 membrane Substances 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000006837 decompression Effects 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 208000005374 Poisoning Diseases 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The gas pressure reducing valve comprises a lower valve body, an upper valve body arranged on the upper surface of the lower valve body and a rubber film arranged between the upper valve body and the lower valve body, wherein the rubber film and the inner wall of the lower valve body are enclosed to form a pressure reducing chamber; and an external thread is arranged on the upper part of the lifting shaft. The gas pressure reducing valve can effectively ensure the tightness when the lifting shaft is connected with the central hole of the rubber film, effectively avoid the condition of gas leakage, ensure the stability of gas pressure, effectively avoid the condition of accidents caused by gas leakage and leakage, and effectively avoid potential safety hazards.
Description
Technical Field
The utility model relates to a gas pressure reducing valve.
Background
The gas pressure reducing valve is an important gas device in the gas equipment, can play the effect of reducing output pressure and stabilizing output pressure, avoid the too big condition of gas atmospheric pressure, effectively stop the potential safety hazard, the gas pressure reducing valve generally comprises last valve body and lower valve body, go up valve body and lower valve body and then be provided with a rubber membrane that is used for the decompression directly, the rubber membrane then encloses with the inner wall of lower valve body and closes and form a decompression chamber, the pressure reducing chamber is interior articulated to have a lever, lever left end lower surface is equipped with the valve pad for opening and shutting, the lever right-hand member then is connected with a lift axle, and the lift axle upper end then is connected in the centre bore of rubber membrane, simultaneously, lower valve body both sides are equipped with air inlet connection and air outlet connection, when the atmospheric pressure of air outlet connection is normal, the gas that flows into in the air inlet connection then can go up the valve pad, the lever left end perk, the lever right-hand member swings downwards along with it moves down, the gas then can get into the decompression chamber, finally follow-up from the air connection and flow out, when the atmospheric pressure of air outlet connection is too big, the atmospheric pressure of pressure atmospheric pressure in the decompression chamber is greater than the air pressure of air inlet connection in the decompression chamber, then can be upwards the lift rubber membrane, the lift axle is moved up to the pressure reducing the pressure of air connection, thereby the pressure can be passed through the pressure reducing valve pad is guaranteed to the air pressure in the air pressure reducing chamber through the air pressure, the pressure that the pressure reducing valve is closed again, and can be had the effect to the end is closed and opened and closed and shut down.
The mode that traditional lift axle and rubber membrane's centre bore is generally fixed through the joint, and this kind of mode is difficult to guarantee the leakproofness between the centre bore of rubber membrane and the lift axle, and the gas in the very easy decompression chamber leads to the outside seepage of clearance between the centre bore inner wall of rubber membrane and the lift axle outer wall, can not only lead to atmospheric pressure unstable, influences the normal use of gas, and in case the gas leaks to the external world, easily causes the circumstances of gas poisoning, and the gas belongs to inflammable substance simultaneously, exists serious potential safety hazard.
Disclosure of Invention
The utility model aims to solve the technical problems in the prior art and provide a gas pressure reducing valve which can effectively ensure the tightness when a lifting shaft is connected with a central hole of a rubber film, effectively avoid the condition of gas leakage, ensure the stability of gas pressure, effectively avoid the condition of accidents caused by gas leakage and effectively avoid potential safety hazards.
The technical scheme adopted for solving the technical problems is as follows:
the utility model discloses a gas pressure reducing valve, which comprises a lower valve body, an upper valve body arranged on the upper surface of the lower valve body and a rubber membrane arranged between the upper valve body and the lower valve body, wherein the rubber membrane and the inner wall of the lower valve body are enclosed to form a pressure reducing chamber; an external thread is arranged at the upper part of the lifting shaft; the center of the rubber film is provided with a center hole; the upper end of the lifting shaft upwards passes through the central hole and is in threaded connection with a compression nut through external threads; a pressing plate sleeved outside the lifting shaft is arranged between the lower surface of the compression nut and the upper surface of the seat plate, and the pressing plate is annular; a sealing groove is arranged in the center of the upper surface of the seat plate; the inner peripheral surface of the sealing groove is provided with a guiding conical surface with a wide upper part and a narrow lower part; the middle part of the lower surface of the rubber membrane is provided with an annular sealing gasket, and the inner wall of the sealing gasket is coplanar with the inner wall of the central hole; the lower surface of the sealing gasket is attached to the upper surface of the seat plate; the edge of the hole at the lower end of the inner hole of the sealing gasket extends downwards to form an annular sealing ring; the inner peripheral surface of the sealing ring is attached to the outer wall of the lifting shaft; the lower surface of the sealing ring is attached to the bottom of the sealing groove; an air inlet gap is formed between the outer peripheral surface of the sealing ring and the guide conical surface; the sealing ring, the sealing gasket and the rubber membrane are integrally formed and made of rubber.
The inner wall of the right end of the air inlet joint is provided with an annular limiting step; a filter screen attached to the limit step is arranged in the air inlet joint; the outer edge of the left side wall of the filter screen is provided with an elastic flange which is attached to the air inlet joint, and the elastic flange is annular.
The right part of the lever is provided with a round hole and a long round hole, the long round hole is positioned at the right side of the round hole, and the left end of the long round hole is communicated with the round hole; the diameter of the round hole is larger than the width of the oblong hole; a connecting rod is arranged in the center of the lower surface of the lifting shaft; the lower end of the connecting rod downwards penetrates through the long round hole and is provided with a limiting head; the diameter of the limiting head is larger than the width of the oblong hole; the diameter of the limiting head is smaller than that of the round hole.
The upper valve body and the lower valve body are fixed by a plurality of uniformly distributed screws.
The upper surface of the lower valve body is provided with an annular clamping groove; the outer edge of the lower surface of the rubber film is provided with a clamping part matched with the clamping groove; the rubber film is positioned between the lower surface of the upper valve body and the upper surface of the lower valve body.
The center of the upper surface of the upper valve body is provided with a screw hole communicated with the inner space of the upper valve body; an end cover attached to the upper end face of the upper valve body is arranged on the upper end face of the upper valve body; the center of the lower surface of the end cover is provided with a strip-shaped groove; the lower surface of the end cover is provided with a screw joint which is screwed in the orifice at the upper end of the screw hole, and the screw joint is annular; and exhaust notches communicated with the strip-shaped grooves are formed in two sides of the screw joint.
A limit seat matched with the screw hole is screwed in the screw hole; an exhaust seat matched with the limit seat is arranged below the limit seat; a limiting groove is formed in the center of the upper surface of the exhaust seat; the center of the lower surface of the limit seat is provided with a limit part matched with the limit seat; the center of the exhaust seat is provided with a first exhaust hole; the center of the limiting seat is provided with a second exhaust hole communicated with the first exhaust hole; the lower surface of the exhaust seat is provided with an upper annular part which encloses the first exhaust hole; the upper surface of the pressing plate is provided with a lower annular part which encloses the compression nut; a spring is arranged between the lower surface of the exhaust seat and the upper surface of the pressing plate; the upper end of the spring is sleeved outside the upper annular part, and the lower annular part is sleeved outside the lower end of the spring.
The beneficial effects of the utility model are as follows:
compared with the prior art, the sealing gasket of the gas pressure reducing valve with the structure has the advantages that the lower surface of the sealing gasket and the upper surface of the seat plate can be bonded to form one seal, the lower surface of the sealing gasket and the bottom of the sealing groove can be bonded to form the other seal, the sealing performance of the lifting shaft at the upper end when being connected with the center of the rubber film can be guaranteed to the greatest extent through double sealing, the outward leakage of gas of the pressure reducing chamber through a gap between the outer wall of the lifting shaft and the inner wall of the center hole is effectively avoided, the stability of gas pressure is effectively guaranteed, and meanwhile the situation that personnel poisoning or inflammable accidents are caused due to gas leakage is avoided, so that potential safety hazards are effectively eliminated.
Drawings
FIG. 1 is a cross-sectional view of a gas pressure relief valve of the present utility model;
fig. 2 is an enlarged view of a portion a of fig. 1;
FIG. 3 is a schematic structural view of an end cap;
FIG. 4 is a schematic view of the lever structure;
fig. 5 is a schematic structural view of the gas pressure reducing valve of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
referring to fig. 1 to 5, the present utility model provides a gas pressure reducing valve, which comprises a lower valve body 1, an upper valve body 2 disposed on the upper surface of the lower valve body 1, and a rubber membrane 3 disposed between the upper valve body 2 and the lower valve body 1, wherein the rubber membrane 3 encloses with the inner wall of the lower valve body 1 to form a pressure reducing chamber 4, an air inlet joint 5 is disposed on the left side of the lower valve body 1, the air inlet joint 5 is communicated with the pressure reducing chamber 4 through an opening hole 6, an air outlet joint 7 communicated with the pressure reducing chamber 4 is disposed on the right side of the lower valve body 1, a lever 8 is hinged in the left portion of the pressure reducing chamber 4, a valve pad 9 for sealing the opening of the upper end of the opening hole is disposed on the lower surface of the left end of the lever 8, a lifting shaft 10 connected with the center of the rubber membrane 3 is disposed on the right side of the lever 8, and a seat plate 11 is disposed on the outer wall of the middle of the lifting shaft 10; an external thread 12 is arranged at the upper part of the lifting shaft 10; the center of the rubber membrane 3 is provided with a center hole 13; the upper end of the lifting shaft 10 upwards passes through the central hole 13 and is in threaded connection with a compression nut 14 through the external thread 12; a pressing plate 15 sleeved outside the lifting shaft 10 is arranged between the lower surface of the compression nut 14 and the upper surface of the seat plate 11, and the pressing plate 15 is annular; a sealing groove 16 is arranged in the center of the upper surface of the seat plate 11; the inner peripheral surface of the sealing groove 16 is provided with a guiding conical surface 17 with a wide upper part and a narrow lower part; the middle part of the lower surface of the rubber membrane 3 is provided with an annular sealing gasket 18, and the inner wall of the sealing gasket 18 is coplanar with the inner wall of the central hole 13; the lower surface of the sealing gasket 18 is attached to the upper surface of the seat plate 11; the lower end hole edge of the inner hole of the sealing gasket 18 extends downwards to form an annular sealing ring 19; the inner peripheral surface of the sealing ring 19 is attached to the outer wall of the lifting shaft 10; the lower surface of the sealing ring 19 is attached to the bottom of the sealing groove 16; an air inlet gap 20 is formed between the outer peripheral surface of the sealing ring 19 and the guide conical surface 17; the seal ring 19, the seal gasket 18 and the rubber membrane 3 are integrally formed and made of rubber.
An annular limiting step 21 is arranged on the inner wall of the right end of the air inlet joint 5; a filter screen 22 attached to the limit step 21 is arranged in the air inlet joint 5; the outer edge of the left side wall of the filter screen 22 is provided with an elastic flange 23 which is attached to the air inlet joint 5, and the elastic flange 23 is annular.
The right part of the lever 8 is provided with a round hole 24 and a long round hole 25, the long round hole 25 is positioned on the right side of the round hole 24, and the left end of the long round hole 25 is communicated with the round hole 24; the diameter of the round hole 24 is larger than the width of the oblong hole 25; a connecting rod 26 is arranged in the center of the lower surface of the lifting shaft 10; the lower end of the connecting rod 26 passes through the long round hole 25 downwards and is provided with a limiting head 27; the diameter of the limiting head 27 is larger than the width of the oblong hole 25; the diameter of the limiting head 27 is smaller than that of the round hole 24.
The upper valve body 2 and the lower valve body 1 are fixed by a plurality of uniformly distributed screws 28.
The upper surface of the lower valve body 1 is provided with an annular clamping groove 29; the outer edge of the lower surface of the rubber film 3 is provided with a clamping part 30 matched with the clamping groove 29; the rubber membrane 3 is positioned between the lower surface of the upper valve body 2 and the upper surface of the lower valve body 1.
The center of the upper surface of the upper valve body 2 is provided with a screw hole 31 communicated with the inner space of the upper valve body; an end cover 32 attached to the upper end surface of the upper valve body 2 is arranged; a strip-shaped groove 33 is arranged in the center of the lower surface of the end cover 32; the lower surface of the end cover 32 is provided with a screw joint 34 which is screwed in a hole at the upper end of the screw hole 31, and the screw joint 34 is annular; the two sides of the screw joint 34 are provided with exhaust notches 35 communicated with the strip-shaped grooves 33.
A limit seat 36 matched with the screw hole 31 is screwed in the screw hole; an exhaust seat 37 matched with the limit seat 36 is arranged below the limit seat; a limiting groove 38 is formed in the center of the upper surface of the exhaust seat 37; the center of the lower surface of the limit seat 36 is provided with a limit part 39 matched with the limit seat; the center of the exhaust seat 37 is provided with a first exhaust hole 40; the center of the limit seat 36 is provided with a second exhaust hole 41 communicated with the first exhaust hole 40; the lower surface of the exhaust seat 37 is provided with an upper annular part 42 surrounding the first exhaust hole 40; the upper surface of the pressing plate 15 is provided with a lower annular part 43 which encloses the compression nut 14; a spring 44 is arranged between the lower surface of the exhaust seat 37 and the upper surface of the pressing plate 15; the upper end of the spring 44 is sleeved outside the upper annular part 42, and the lower annular part 43 is sleeved outside the lower end of the spring 44.
The application method of the utility model is as follows:
the laminating between sealing pad 18 lower surface and the bedplate 11 upper surface can form one sealed, and laminating between sealing washer 19 lower surface and the seal groove 16 tank bottom can form another sealed, and the dual seal can guarantee the leakproofness when lift axle 10 upper end and rubber membrane 3 center are connected to the maximum, effectively avoids the outside seepage of the gas of decompression cavity 4 through the clearance between lift axle 10 outer wall and the centre bore 13 inner wall, effectively guarantees the stability of atmospheric pressure, avoids simultaneously that the gas leaks and leads to personnel's poisoning or the condition of causing inflammable accident, effectively stops the potential safety hazard.
When the gas in the decompression chamber 4 leaks outwards, the first seal formed by the lower surface of the sealing gasket 18 and the upper surface of the seat plate 11 needs to be broken through, after the first seal is broken through, the second seal formed by the lower surface of the sealing ring 19 and the bottom of the sealing groove 16 needs to be broken through, so that even if one seal fails, the other seal can still ensure the tightness when the upper end of the lifting shaft 10 is connected with the center of the rubber membrane 3, the condition of gas leakage is avoided, the existence of the guide conical surface 17 can play an auxiliary sealing effect, when the gas breaks through the first seal, the gas can enter the air inlet gap 20 between the outer peripheral surface of the sealing ring 19 and the guide conical surface 17, and the gas pressure in the air inlet gap 20 continuously rises under the guide effect of the guide conical surface 17, and at the same time, the high pressure can squeeze the outer peripheral surface of the sealing ring 19, so that the inner peripheral surface of the sealing ring 19 is further attached to the outer wall of the lifting shaft 10, the tightness when the upper end of the lifting shaft 10 is connected with the center of the rubber membrane 3 is ensured, and the compression nut 14 can move through the upper surface 15 of the compression nut 15 of the self lower surface of the compression nut, and the sealing ring 19 can be further restricted by the upper surface of the sealing ring 19 towards the bottom of the sealing groove 16, and the sealing ring 19 can be further restricted by the upper surface of the sealing ring 16 under the condition of the upper surface of the sealing ring 16.
The air inlet joint 5 right-hand member inner wall is equipped with one and is annular spacing step 21, be equipped with in the air inlet joint 5 with spacing step 21 the filter screen 22 of laminating mutually, filter screen 22 left side lateral wall outward flange is equipped with one and air inlet joint 5 the elasticity flange 23 of laminating mutually, elasticity flange 23 is annular, the existence of filter screen 22 can carry out effective filtration to the impurity in the gas to avoid impurity to lead to the condition that the resistance that receives when the gas carries grow, avoid the existence of impurity to influence the actual transport flow's of gas condition simultaneously, effectively guarantee gas transport flow and conveying efficiency.
The right part of the lever 8 is provided with a round hole 24 and a slotted hole 25, the slotted hole 25 is positioned on the right side of the round hole 24, the left end of the slotted hole 25 is communicated with the round hole 24, the diameter of the round hole 24 is larger than the width of the slotted hole 25, a connecting rod 26 is arranged in the center of the lower surface of the lifting shaft 10, the lower end of the connecting rod 26 downwards penetrates through the slotted hole 25 and is provided with a limiting head 27, the diameter of the limiting head 27 is larger than the width of the slotted hole 25, the diameter of the limiting head 27 is smaller than the diameter of the round hole 24, the connecting mode is convenient for dismounting of the connecting rod 26, the lifting shaft 10 can be vertically lifted, and the stability of the rubber film 3 during buffering and depressurization is guaranteed.
The upper valve body 2 and the lower valve body 1 are fixed by a plurality of uniformly distributed screws, and the fixing mode is convenient for the disassembly and assembly between the upper valve body 2 and the lower valve body 1, so that the disassembly and assembly of the parts inside the upper valve body 2 and the lower valve body 1 are facilitated, and the maintenance and replacement of the parts are convenient.
The upper surface of the lower valve body 1 is provided with an annular clamping groove 29, the outer edge of the lower surface of the rubber film 3 is provided with a clamping position part 30 matched with the clamping groove 29, the rubber film 3 is positioned between the lower surface of the upper valve body 2 and the upper surface of the lower valve body 1, and the clamping between the clamping position part 30 and the clamping groove 29 can effectively ensure the stability of the rubber film 3 during buffering and depressurization.
The center of the upper surface of the upper valve body 2 is provided with a screw hole 31 communicated with the inner space of the upper valve body, the upper end face of the upper valve body 2 is provided with an end cover 32 attached to the upper end cover 32, the center of the lower surface of the end cover 32 is provided with a strip-shaped groove 33, the lower surface of the end cover 32 is provided with a screw joint 34 which is in screw connection with the hole at the upper end of the screw hole 31, the screw joint 34 is annular, two sides of the screw joint 34 are provided with exhaust gaps 35 communicated with the strip-shaped groove 33, when the rubber film 3 deforms upwards, the rubber film 3 can upwards extrude gas in the upper valve body 2, so that the gas can be discharged to the outside through the exhaust gaps 35 and the strip-shaped groove 33 in sequence, and therefore, smooth upward deformation of the rubber film 3 is ensured, and after the rubber film 3 is restored, external gas can enter the upper valve body 2 again through the strip-shaped groove 33 and the exhaust gaps 35.
The screw hole 31 is internally and in-screwed with a limit seat 36 matched with the limit seat, an exhaust seat 37 matched with the limit seat is arranged below the limit seat 36, a limit groove 38 is formed in the center of the upper surface of the exhaust seat 37, a limit part 39 matched with the limit seat is arranged in the center of the lower surface of the limit seat 36, a first exhaust hole 40 is formed in the center of the exhaust seat 37, a second exhaust hole 41 communicated with the first exhaust hole 40 is formed in the center of the limit seat 36, an upper annular part 42 surrounding the first exhaust hole 40 is formed in the lower surface of the exhaust seat 37, a lower annular part 43 surrounding the compression nut 14 is formed in the upper surface of the pressure plate 15, a spring 44 is arranged between the lower surface of the exhaust seat 37 and the upper surface of the pressure plate 15, the upper end of the spring 44 is sleeved outside the upper annular part 42, the lower annular part 43 is sleeved outside the lower end of the spring 44, the first exhaust hole 40 and the second exhaust hole 41 can realize the exhaust of gas inside the upper valve body 2, the existence of the spring 44 can not only play an auxiliary buffering air pressure effect when the rubber membrane 3 deforms upwards, and the pressure plate 15 can be further pressed down, even if the sealing pad 18 is aged, and the sealing pad 18 can always keep the sealing pad 18 at the upper surface of the sealing pad 11 due to the fact that the sealing pad 18 is always aged.
Claims (7)
1. The utility model provides a gas relief pressure valve, including lower valve body, locate the last valve body of lower valve body upper surface and locate the rubber membrane between last valve body and the lower valve body, rubber membrane encloses with lower valve body inner wall and closes and form the decompression cavity, lower valve body left side is equipped with air inlet connector, air inlet connector link up with the decompression cavity mutually through opening the hole, lower valve body right side is equipped with the joint of giving vent to anger that link up with the decompression cavity mutually, articulated in the decompression cavity left part has the lever, lever left end lower surface is equipped with the valve pad that will open hole upper end hole and block up sealedly, the lever right side is equipped with the lift axle that is connected with rubber membrane center, its characterized in that: the outer wall of the middle part of the lifting shaft is provided with a seat board; an external thread is arranged at the upper part of the lifting shaft; the center of the rubber film is provided with a center hole; the upper end of the lifting shaft upwards passes through the central hole and is in threaded connection with a compression nut through external threads; a pressing plate sleeved outside the lifting shaft is arranged between the lower surface of the compression nut and the upper surface of the seat plate, and the pressing plate is annular; a sealing groove is arranged in the center of the upper surface of the seat plate; the inner peripheral surface of the sealing groove is provided with a guiding conical surface with a wide upper part and a narrow lower part; the middle part of the lower surface of the rubber membrane is provided with an annular sealing gasket, and the inner wall of the sealing gasket is coplanar with the inner wall of the central hole; the lower surface of the sealing gasket is attached to the upper surface of the seat plate; the edge of the hole at the lower end of the inner hole of the sealing gasket extends downwards to form an annular sealing ring; the inner peripheral surface of the sealing ring is attached to the outer wall of the lifting shaft; the lower surface of the sealing ring is attached to the bottom of the sealing groove; an air inlet gap is formed between the outer peripheral surface of the sealing ring and the guide conical surface; the sealing ring, the sealing gasket and the rubber membrane are integrally formed and made of rubber.
2. A gas pressure relief valve as claimed in claim 1, wherein: the inner wall of the right end of the air inlet joint is provided with an annular limiting step; a filter screen attached to the limit step is arranged in the air inlet joint; the outer edge of the left side wall of the filter screen is provided with an elastic flange which is attached to the air inlet joint, and the elastic flange is annular.
3. A gas pressure relief valve as claimed in claim 1, wherein: the right part of the lever is provided with a round hole and a long round hole, the long round hole is positioned at the right side of the round hole, and the left end of the long round hole is communicated with the round hole; the diameter of the round hole is larger than the width of the oblong hole; a connecting rod is arranged in the center of the lower surface of the lifting shaft; the lower end of the connecting rod downwards penetrates through the long round hole and is provided with a limiting head; the diameter of the limiting head is larger than the width of the oblong hole; the diameter of the limiting head is smaller than that of the round hole.
4. A gas pressure relief valve as claimed in claim 1, wherein: the upper valve body and the lower valve body are fixed by a plurality of uniformly distributed screws.
5. The gas pressure reducing valve according to claim 4, wherein: the upper surface of the lower valve body is provided with an annular clamping groove; the outer edge of the lower surface of the rubber film is provided with a clamping part matched with the clamping groove; the rubber film is positioned between the lower surface of the upper valve body and the upper surface of the lower valve body.
6. A gas pressure relief valve as claimed in claim 1, wherein: the center of the upper surface of the upper valve body is provided with a screw hole communicated with the inner space of the upper valve body; an end cover attached to the upper end face of the upper valve body is arranged on the upper end face of the upper valve body; the center of the lower surface of the end cover is provided with a strip-shaped groove; the lower surface of the end cover is provided with a screw joint which is screwed in the orifice at the upper end of the screw hole, and the screw joint is annular; and exhaust notches communicated with the strip-shaped grooves are formed in two sides of the screw joint.
7. A gas pressure relief valve as defined in claim 6, wherein: a limit seat matched with the screw hole is screwed in the screw hole; an exhaust seat matched with the limit seat is arranged below the limit seat; a limiting groove is formed in the center of the upper surface of the exhaust seat; the center of the lower surface of the limit seat is provided with a limit part matched with the limit seat; the center of the exhaust seat is provided with a first exhaust hole; the center of the limiting seat is provided with a second exhaust hole communicated with the first exhaust hole; the lower surface of the exhaust seat is provided with an upper annular part which encloses the first exhaust hole; the upper surface of the pressing plate is provided with a lower annular part which encloses the compression nut; a spring is arranged between the lower surface of the exhaust seat and the upper surface of the pressing plate; the upper end of the spring is sleeved outside the upper annular part, and the lower annular part is sleeved outside the lower end of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035577.3U CN220540393U (en) | 2023-07-31 | 2023-07-31 | Gas pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035577.3U CN220540393U (en) | 2023-07-31 | 2023-07-31 | Gas pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220540393U true CN220540393U (en) | 2024-02-27 |
Family
ID=89968957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322035577.3U Active CN220540393U (en) | 2023-07-31 | 2023-07-31 | Gas pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220540393U (en) |
-
2023
- 2023-07-31 CN CN202322035577.3U patent/CN220540393U/en active Active
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