CN218670795U - Explosion-proof relief valve - Google Patents
Explosion-proof relief valve Download PDFInfo
- Publication number
- CN218670795U CN218670795U CN202223416460.1U CN202223416460U CN218670795U CN 218670795 U CN218670795 U CN 218670795U CN 202223416460 U CN202223416460 U CN 202223416460U CN 218670795 U CN218670795 U CN 218670795U
- Authority
- CN
- China
- Prior art keywords
- extension rod
- sealing
- connecting piece
- explosion
- relief valve
- 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
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to the technical field of pressure relief valves, and discloses an explosion-proof pressure relief valve, which comprises a base, a sealing cover, a connecting piece and an elastic piece; the base is provided with an air outlet for air to flow out; the sealing cover comprises a sealing main body and an extension rod convexly arranged on the inner wall of the sealing main body along a first direction, the sealing main body is used for sealing the air outlet, and the extension rod extends into the air outlet; the connecting piece is sleeved on the periphery of the extension rod and can rotate relative to the extension rod, and when the connecting piece rotates relative to the extension rod, the connecting piece is provided with a first position where the connecting piece can leave the extension rod along the first direction and a second position where the connecting piece cannot leave the extension rod along the first direction; the elastic part is limited on the base and is arranged around the extension rod in a surrounding way, and the connecting part applies acting force in the first direction. This application mainly solves current explosion-proof relief valve because the structure is complicated and the technical problem of the quick pressure release of being not convenient for.
Description
Technical Field
The utility model relates to a technical field of relief valve especially relates to an explosion-proof relief valve.
Background
The explosion-proof pressure relief valve is used for being installed on a closed system, when the pressure in the closed system exceeds the set pressure of the explosion-proof pressure relief valve, the sealing cover of the explosion-proof pressure relief valve is automatically opened, so that the gas in the system is discharged outwards, the medium pressure in the system is ensured to be below the set pressure, and accidents are prevented. The existing explosion-proof pressure relief valve has the defect of inconvenient and rapid pressure relief due to the complex structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion-proof relief valve mainly solves current explosion-proof relief valve because the structure is complicated and the technical problem of the quick pressure release of being not convenient for.
To achieve the purpose, the utility model adopts the following technical proposal:
an explosion-proof pressure relief valve comprising:
the base is provided with an air outlet hole for allowing air to flow out;
the sealing cover comprises a sealing main body and an extension rod convexly arranged on the inner wall of the sealing main body along a first direction, the sealing main body is used for sealing the air outlet, and the extension rod extends into the air outlet;
the connecting piece is sleeved on the periphery of the extension rod and can rotate relative to the extension rod, and when the connecting piece rotates relative to the extension rod, the connecting piece is provided with a first position where the connecting piece can leave the extension rod along the first direction and a second position where the connecting piece cannot leave the extension rod along the first direction;
the elastic piece is limited on the base and is arranged around the extension rod, one end of the elastic piece is abutted to the base, and the other end of the elastic piece is abutted to the connecting piece and applies acting force to the connecting piece in the first direction.
In one embodiment, the connecting member is provided with an open insertion groove, a notch of the insertion groove faces the sealing main body, the extension rod is inserted into the insertion groove, the connecting member is provided with a limiting hole communicated with the insertion groove, a projection is convexly arranged on the outer wall of the extension rod, and when the projection is not inserted into the limiting hole, the connecting member is located at the first position; when the lug is inserted into the limiting hole, the connecting piece is located at the second position.
In one embodiment, the connecting piece is provided with two limiting holes, and the two limiting holes are symmetrically arranged and penetrate through the outer wall of the connecting piece.
In one embodiment, the base is provided with an open mounting groove positioned in the air outlet hole, a notch of the mounting groove faces away from the sealing main body, and a through hole is formed in the bottom of the mounting groove; the extension rod is sequentially inserted into the through hole and the insertion groove, and the extension rod, the connecting piece and the elastic piece are contained in the installation groove.
In one embodiment, the outer wall of the extension rod is convexly provided with a reinforcing rib, and the through hole is a special-shaped hole which is matched and inserted with the reinforcing rib.
In one embodiment, the base comprises a base plate and a fixed seat which are fixedly connected, the air outlet is formed in the base plate, and the mounting groove and the through hole are formed in the fixed seat.
In one embodiment, a sealing ring for sealing the air outlet hole is arranged between the sealing main body and the base plate.
In one embodiment, an annular sealing groove is formed in one surface of the sealing body facing the substrate, a hole communicated with the sealing groove is formed in an inner wall of the sealing body, the sealing ring includes an annular sealing portion and a protruding portion protruding from the annular sealing portion, the annular sealing portion is accommodated in the sealing groove, the protruding portion is disposed in the hole, and a supporting portion for supporting the protruding portion is protruding from an inner wall of the hole.
In one embodiment, the explosion-proof pressure relief valve further comprises a metal plate fixed on the inner wall of the sealing main body.
In one embodiment, a side of the connecting piece, which faces away from the sealing main body, is provided with a straight groove.
Compared with the prior art, the utility model provides an explosion-proof relief valve has following beneficial effect at least:
the installation process of the explosion-proof relief valve of the technical scheme is as follows: the sealing cover and the base are abutted against each other, the sealing main body on the sealing cover covers the air outlet hole of the base, the extension rod on the sealing cover extends into the air outlet hole, the elastic part is sleeved on the base, the elastic part is arranged around the extension rod in a surrounding mode, then the connecting piece is sleeved on the periphery of the extension rod and rotates to a second position relative to the extension rod from the first position after compressing the elastic part, at the moment, the connecting piece is abutted against the extension rod under the action force of the elastic part in the first direction, and the extension rod enables the sealing main body to be abutted against the base tightly under the action force of the connecting piece in the first direction;
the disassembly process of the explosion-proof pressure release valve in the technical scheme is as follows: rotating the connecting piece from the second position to the first position relative to the extension rod, wherein the connecting piece is separated from the extension rod under the action of the elastic piece in the first direction, and then the base, the sealing cover and the elastic piece can be directly separated;
when the air pressure in the system is low and is not enough to push the sealing cover and the connecting piece, the sealing main body is tightly abutted on the base again under the action of the elastic piece, so that the air in the system cannot be leaked out.
To sum up, this technical scheme's explosion-proof relief valve does not have the fastener, only needs the controlling connection piece to accomplish the equipment or dismantle the process for the rotational position of extension rod, has simple structure and the advantage of being convenient for install and remove to can the quick pressure release, the automatic equipment of also being convenient for simultaneously, and then can improve production efficiency by a wide margin.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an explosion-proof relief valve provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an explosion-proof relief valve provided in an embodiment of the present application at another angle;
fig. 3 is an exploded view of an explosion-proof relief valve according to an embodiment of the present disclosure;
fig. 4 is an exploded view of an explosion-proof relief valve provided in an embodiment of the present application at another angle;
FIG. 5 is a schematic structural view of a sealing cover and a connecting member provided in an embodiment of the present application after being assembled together;
FIG. 6 is a front view of an explosion-proof relief valve provided in an embodiment of the present application;
FIG. 7 isbase:Sub>A cross-sectional view taken at A-A of FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at B;
fig. 9 is a schematic structural view of a seal cover in which a metal plate is fixed according to an embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
10. a base; 101. a substrate; 1011. an air outlet; 102. a fixed seat; 1021. mounting grooves; 1022. a through hole;
20. a sealing cover; 201. a sealing body; 2011. a sealing groove; 2012. hole site; 2013. a bearing part; 202. an extension rod; 2021. a bump; 2022. reinforcing ribs;
30. a connecting member; 301. inserting grooves; 302. a limiting hole; 303. a straight slot; 40. an elastic member; 50. a seal ring; 501. an annular seal portion; 502. a boss portion; 60. a metal plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be considered limiting to the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 7, the present embodiment provides an explosion-proof relief valve, which includes a base 10, a sealing cover 20, a connecting member 30 and an elastic member 40.
Among them, the susceptor 10 is divided into two parts in consideration of the advantage of easy processing, and the susceptor 10 includes a base plate 101 and a holder 102. Base plate 101 and fixing base 102 pass through the screw fixation as an organic whole, and venthole 1011 has been seted up at the middle part of base plate 101, and this venthole 1011 is used for supplying the gaseous outwards outflow of the too big internal pressure of system, has seted up mounting groove 1021 on the fixing base 102, and mounting groove 1021 is located within venthole 1011 and the inside of notch orientation system, and the through-hole 1022 that runs through is seted up to the tank bottom of mounting groove 1021.
The sealing cover 20 includes a sealing main body 201 and an extension rod 202, the sealing main body 201 is disposed outside the system, in other words, the sealing main body 201 faces away from the notch of the mounting groove 1021, the sealing main body 201 is used for covering the air outlet 1011, and when the sealing main body 201 tightly abuts on the substrate 101, the sealing main body 201 can seal the air outlet 1011. The extension rod 202 is disposed on the inner wall of the sealing body 201 in a protruding manner along a first direction, which is indicated by the X direction in the drawings, and the extension rod 202 is inserted from the through hole 1022 along the X direction and is received in the mounting groove 1021.
The connecting member 30 is accommodated in the mounting groove 1021, the connecting member 30 is provided with an open insertion groove 301, a notch of the insertion groove 301 faces the sealing main body 201 of the sealing cover 20, the extension rod 202 is inserted into the insertion groove 301, the outer wall of the connecting member 30 is further provided with two limiting holes 302 which are symmetrically arranged and penetrate through the insertion groove 301, and the outer wall of the extension rod 202 is convexly provided with a bump 2021. Specifically, when the extension rod 202 is directly inserted into the insertion groove 301 of the connection member 30, the protrusion 2021 is located in the insertion groove 301 but not inserted into the limiting hole 302, and at this time, the connection member 30 can easily leave the extension rod 202 along the X direction, and a position where the connection member 30 can leave the extension rod 202 along the X direction is defined as a first position of the connection member 30. After the extension rod 202 is inserted into the insertion groove 301 of the connection member 30, and the connection member 30 rotates relative to the extension rod 202, the protrusion 2021 is inserted into the limiting hole 302, and at this time, because the protrusion 2021 is limited in the limiting hole 302, the connection member 30 cannot leave the extension rod 202 along the X direction, and at this time, the position where the connection member 30 cannot leave the extension rod 202 along the X direction is defined as the second position of the connection member 30.
The elastic member 40 is preferably a compression spring, the elastic member 40 is also accommodated in the installation groove 1021, the elastic member 40 is arranged around the extension rod 202 and the connecting member 30, one end of the elastic member 40 abuts against the groove bottom of the installation groove 1021, the other end of the elastic member 40 abuts against the connecting member 30, the elastic member 40 applies an acting force to the connecting member 30 in the X direction, when the connecting member 30 is located at a first position relative to the extension rod 202, the connecting member 30 is away from the extension rod 202 in the X direction by the acting force of the elastic member 40, when the connecting member 30 is located at a second position relative to the extension rod 202, the connecting member 30 has a movement tendency of moving the extension rod 202 in the X direction by the acting force of the elastic member 40, and the extension rod 202 stressed in the X direction enables the sealing main body 201 to tightly abut against the substrate 101, so that the sealing main body 201 can seal the air outlet 1011 of the substrate 101.
Referring to fig. 3, 4, 7 and 8, the explosion-proof relief valve of this embodiment further includes a sealing ring 50, where the sealing ring 50 includes an annular sealing portion 501 and a protrusion 502 protruding from the annular sealing portion 501, one surface of the sealing main body 201 facing the substrate 101 is provided with an annular sealing groove 2011, an inner wall of the sealing main body 201 is provided with a hole 2012 penetrating to the sealing groove 2011, when the explosion-proof relief valve is installed, the annular sealing portion 501 is accommodated in the sealing groove 2011, the protrusion 502 extends from the sealing groove 2011 to the hole 2012, a support 2013 is protruding from an inner wall of the hole 2012, and the support 2013 is used for supporting the protrusion 502, so that the sealing ring 50 always moves along with the movement of the sealing cover 20.
The installation process of the explosion-proof relief valve of the embodiment is as follows:
firstly, the sealing ring 50 is installed in the sealing cover 20 in advance, the fixing seat 102 and the substrate 101 are fixed into a whole in advance, then the sealing cover 20 and the substrate 101 are abutted against each other, the sealing main body 201 on the sealing cover 20 covers the air outlet 1011 of the substrate 101, the extension rod 202 on the sealing cover 20 is inserted into the installation groove 1021 from the through hole 1022, then the elastic member 40 is inserted into the installation groove 1021, the elastic member 40 is surrounded around the extension rod 202, then the connecting member 30 is sleeved on the periphery of the extension rod 202 and rotates to the second position relative to the extension rod 202 from the first position after compressing the elastic member 40, at this time, the lug 2021 on the extension rod 202 is inserted into the limiting hole 302 of the connecting member 30, at this time, the connecting member 30 is abutted against the extension rod 202 by the acting force of the elastic member 40 in the X direction, the extension rod 202 is tightly abutted against the sealing main body 201 on the substrate 101 by the acting force of the connecting member 30 in the X direction, at this time, the sealing main body 201 and the substrate 101 are compressed together, so that the gas in the system cannot flow out from the gap between the sealing main body 201 and the substrate 101.
In operation, when the gas pressure inside the system is too high, the gas will penetrate through the gas outlet 1011 and push the sealing cover 20 and the connecting member 30 to move together in the opposite direction of the direction X, and at this time, a gap is exposed between the sealing body 201 and the substrate 101, and the gas will leak out from the gap, and when the gas pressure inside the system is too low to push the sealing cover 20 and the connecting member 30, the sealing body 201 will tightly abut against the substrate 101 again under the action of the elastic member 40, so that the gas inside the system will not leak out.
The disassembly process of the explosion-proof pressure release valve in the technical scheme is as follows: the connecting member 30 is rotated from the second position to the first position relative to the extending rod 202, the protrusion 2021 on the extending rod 202 is not inserted into the limiting hole 302 of the connecting member 30, the protrusion 2021 on the extending rod 202 is accommodated in the insertion groove 301 of the connecting member 30 again, the connecting member 30 is separated from the extending rod 202 by the force of the elastic member 40 in the X direction, and then the base 10, the sealing cover 20 and the elastic member 40 can be directly separated.
Preferably, because the extension rod 202 has a long length, a reinforcing rib 2022 is convexly disposed on the outer wall of the extension rod 202, the reinforcing rib 2022 is in a cross shape, the reinforcing rib 2022 passes through the through hole 1022 and extends into the mounting groove 1021, and the reinforcing rib 2022 is used to enhance the rigidity strength of the extension rod 202, so as to solve the problem that the extension rod 202 is easy to break when being stressed. Accordingly, the shape of the through hole 1022 is designed to be adapted to the shape of the rib 2022, so that the extension rod 202 can only move axially relative to the fixing base 102 but cannot move rotationally, thereby ensuring that the position of the sealing cover 20 relative to the base plate 101 is always unchanged after each opening and reclosing, and further ensuring the reliability of the sealing cover 20 for sealing the air outlet 1011. In addition, the through hole 1022 is a special-shaped hole, the reinforcing rib 2022 is also provided with a shape matched and inserted with the through hole 1022, and the special-shaped through hole 1022 plays a foolproof role, so that an operator can be inserted into the fixing seat 102 in the same posture when assembling the sealing cover 20, and the problem of wrong direction when the sealing cover 20 is inserted into the fixing seat 102 is avoided.
Preferably, referring to fig. 9, a metal plate 60 is further fixed on the inner wall of the sealing body 201, and the metal plate 60 can be attracted by a magnet so as to suck the sealing cover 20 or the entire explosion-proof relief valve to a specified position in an automatic production operation.
Preferably, a straight groove 303 is formed on a surface of the connecting member 30 facing away from the sealing body 201, and a user can use a straight screwdriver to insert into the straight groove 303 to control the connecting member 30 to rotate, that is, the straight groove 303 facilitates the user to control the connecting member 30 to switch between the first position and the second position.
In conclusion, the explosion-proof relief valve of the technical scheme has no fastener, can be assembled or disassembled only by controlling the rotation position of the connecting piece 30 relative to the extension rod 202, has the advantages of simple structure and convenience in assembly and disassembly, can be quickly relieved, is convenient for automatic assembly, and can greatly improve the production efficiency.
The foregoing is only a preferred embodiment of the present invention, and the technical principles of the present invention have been specifically described, and the description is only for the purpose of explaining the principles of the present invention, and should not be construed as limiting the scope of the present invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the creative effort of those skilled in the art are intended to be included within the protection scope of the invention.
Claims (10)
1. An explosion-proof relief valve, characterized by comprising:
the base is provided with an air outlet hole for allowing air to flow out;
the sealing cover comprises a sealing main body and an extension rod convexly arranged on the inner wall of the sealing main body along a first direction, the sealing main body is used for sealing the air outlet, and the extension rod extends into the air outlet;
the connecting piece is sleeved on the periphery of the extension rod and can rotate relative to the extension rod, and when the connecting piece rotates relative to the extension rod, the connecting piece is provided with a first position where the connecting piece can leave the extension rod along the first direction and a second position where the connecting piece cannot leave the extension rod along the first direction;
the elastic piece is limited on the base and is arranged around the extension rod, one end of the elastic piece is abutted to the base, and the other end of the elastic piece is abutted to the connecting piece and applies acting force to the connecting piece in the first direction.
2. The explosion-proof relief valve of claim 1 wherein the connecting member is provided with an open insertion groove, a notch of the insertion groove faces the sealing body, the extension rod is inserted into the insertion groove, the connecting member is provided with a limit hole communicated with the insertion groove, the outer wall of the extension rod is provided with a convex block in a protruding manner, and when the convex block is not inserted into the limit hole, the connecting member is located at the first position; when the lug is inserted into the limiting hole, the connecting piece is located at the second position.
3. The explosion-proof pressure relief valve of claim 2 wherein the connecting piece is provided with two limiting holes, and the two limiting holes are symmetrically arranged and penetrate through the outer wall of the connecting piece.
4. The explosion-proof relief valve of claim 2 wherein the base is provided with an open mounting groove located in the air outlet, a notch of the mounting groove faces away from the sealing main body, and a through hole is formed in a groove bottom of the mounting groove; the extension rod is sequentially inserted into the through hole and the insertion groove, and the extension rod, the connecting piece and the elastic piece are contained in the installation groove.
5. The explosion-proof pressure relief valve of claim 4 wherein the outer wall of the extension rod is provided with a reinforcing rib in a protruding manner, and the through hole is a special-shaped hole which is matched and inserted with the reinforcing rib.
6. The explosion-proof relief valve of claim 4 wherein the base includes a base plate and a fixing seat fixedly connected thereto, the air outlet is provided on the base plate, and the mounting groove and the through hole are both provided on the fixing seat.
7. The explosion-proof pressure relief valve of claim 6 wherein a sealing ring for sealing the air outlet hole is provided between the sealing body and the base plate.
8. The explosion-proof relief valve of claim 7 wherein one surface of the sealing body facing the substrate is provided with an annular sealing groove, an inner wall of the sealing body is provided with a hole communicated with the sealing groove, the sealing ring comprises an annular sealing portion and a protrusion protruding from the annular sealing portion, the annular sealing portion is accommodated in the sealing groove, the protrusion is disposed in the hole, and a support portion for supporting the protrusion is protruding from the inner wall of the hole.
9. The explosion-proof pressure relief valve of claim 1 further comprising a metal plate secured to an inner wall of the seal body.
10. The explosion-proof relief valve of any one of claims 1-9 wherein a face of the connector facing away from the sealing body is slotted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223416460.1U CN218670795U (en) | 2022-12-20 | 2022-12-20 | Explosion-proof relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223416460.1U CN218670795U (en) | 2022-12-20 | 2022-12-20 | Explosion-proof relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218670795U true CN218670795U (en) | 2023-03-21 |
Family
ID=85549665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223416460.1U Active CN218670795U (en) | 2022-12-20 | 2022-12-20 | Explosion-proof relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218670795U (en) |
-
2022
- 2022-12-20 CN CN202223416460.1U patent/CN218670795U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218670795U (en) | Explosion-proof relief valve | |
| CN109210241B (en) | Safety valve and water heater | |
| CN218187216U (en) | Rack valve and instrument table | |
| JP3087986U (en) | Gas tank switchgear | |
| CN211951626U (en) | Pilot-operated electromagnetic valve | |
| CN215981993U (en) | Container valve control device | |
| CN218671074U (en) | Quick-connecting water-stop nut | |
| CN212899885U (en) | Valve core assembly and water tap valve core | |
| CN216788780U (en) | Sealing structure for desulfurization pump | |
| CN216382648U (en) | Swinging faucet | |
| CN106828353B (en) | A kind of car electrics part box cover installation fixed structure | |
| CN220337520U (en) | Concealed ball valve | |
| CN216715276U (en) | Control switch valve and tap main body | |
| CN219761663U (en) | Waterproof covering structure of unmanned ship accuse SIM card | |
| CN212812214U (en) | Shell subassembly that can dismantle fast | |
| CN210739459U (en) | Stainless steel tap | |
| CN216112427U (en) | Solenoid valve, pilot valve and four-way valve | |
| CN218718938U (en) | Plug valve for self-closing valve | |
| CN216112426U (en) | Solenoid valve and cross valve | |
| CN210566288U (en) | Direct-acting electromagnetic valve | |
| CN219755523U (en) | Tap assembly | |
| CN217039680U (en) | Exhaust valve mechanism mounting assembly and pressure vessel | |
| CN212690972U (en) | Universal angle valve | |
| CN216768421U (en) | Gas flow adjusting device and gas switch valve thereof | |
| CN101725723B (en) | Fuel tank switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |