CN112228604B - Simple to operate's relief valve - Google Patents
Simple to operate's relief valve Download PDFInfo
- Publication number
- CN112228604B CN112228604B CN202011464783.0A CN202011464783A CN112228604B CN 112228604 B CN112228604 B CN 112228604B CN 202011464783 A CN202011464783 A CN 202011464783A CN 112228604 B CN112228604 B CN 112228604B
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- Prior art keywords
- pressure relief
- valve body
- hole
- partition plate
- stud
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
Abstract
The invention discloses a pressure relief valve convenient to install, which comprises a valve body, a partition plate and an installation block, wherein the inner wall of the valve body is provided with a chute, the partition plate is slidably clamped in the chute, and one side of the valve body is provided with a stepped installation hole; the clapboard is provided with a pressure relief opening, and the end surface of one side of the clapboard is rotatably connected with a sealing cover; the mounting block is provided with a threaded hole, and a guide wheel is rotatably mounted on the end surface facing the interior of the valve body; a locking snap ring is arranged between the mounting block and the mounting hole; the threaded hole is internally threaded with a stud, the stud is connected with a stay cable, the stay cable rotates and winds on the guide wheel, and a spring is connected between the tail end of the stay cable and the sealing cover. The pressure relief valve convenient to install is simple in structure, the partition plate and the installation block can be quickly assembled and disassembled by arranging the sliding groove and the installation hole on the valve body, the internal parts can be replaced, maintained and cleaned without integrally disassembling the valve body, and the assembling and disassembling time is saved; the spring is driven to stretch and retract through rotating the stud, so that the pressure relief threshold value is changed, and the adjustment is convenient and efficient.
Description
Technical Field
The invention relates to the technical field of pressure relief valves, in particular to a pressure relief valve convenient to install.
Background
The pressure relief valve is also called a safety valve, can be automatically opened and closed according to the working pressure of the system, and is generally arranged on equipment or a pipeline of a closed system to protect the safety of the system. When the pressure in the equipment or the pipeline exceeds the set pressure of the pressure release valve, the pressure release valve is automatically opened, the medium pressure in the equipment or the pipeline is ensured to be below the set pressure, the equipment and the pipeline are protected, and accidents are prevented.
The existing pressure relief valve is complex in structure, when internal parts of the pressure relief valve are damaged or need to be maintained, the valve body is required to be integrally detached, the internal parts are taken out one by one to be replaced or repaired, the dismounting step is complicated, the installation is not convenient, and the installation efficiency is influenced.
Disclosure of Invention
The invention aims to provide a pressure relief valve convenient to install so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a pressure release valve convenient to install comprises a valve body, a partition plate and an installation block, wherein a sliding groove is formed in the inner wall of the valve body, the partition plate is slidably clamped in the sliding groove, and a stepped installation hole used for accommodating the installation block is formed in the outer wall of one side of the valve body;
the partition board is provided with a pressure relief opening, the end face of one side, away from the mounting hole, of the partition board is provided with a hinge seat, the hinge seat is rotatably connected with a sealing cover used for sealing the pressure relief opening, and the end face of one side, facing the pressure relief opening, of the sealing cover is provided with a first connecting seat;
the valve body is provided with a valve seat, a valve body is arranged in the valve seat, the valve seat is provided with a valve seat; a locking snap ring is detachably arranged between the mounting block and the inner wall of the mounting hole;
a stud is sleeved in the threaded hole, a rotating sleeve is rotatably arranged at one end, facing the threaded hole, of the stud, a second connecting seat is fixed on the rotating sleeve, a pull rope is detachably connected to the second connecting seat, the pull rope is rotatably wound on a guide wheel, and a spring is connected between the tail end of the pull rope and the first connecting seat; and a push rod is further fixed on one side of the partition plate close to the mounting block, and the tail end of the push rod is pressed against the side wall of the mounting block.
As a further scheme of the invention: a first sealing groove is formed in one end, far away from the mounting hole, of the sliding groove, and a first sealing ring is mounted in the first sealing groove.
As a further scheme of the invention: and a second sealing groove is formed in the inner wall of the mounting hole, and a second sealing ring is mounted in the second sealing groove.
As a further scheme of the invention: and a sealing ring is arranged on one side of the pressure relief opening facing the sealing cover.
As a further scheme of the invention: one side of the sealing cover facing the pressure relief opening is provided with a conical surface.
As a further scheme of the invention: and a rotary handle is arranged on the stud.
As a further scheme of the invention: the cable is provided with the connector towards the one end of spring, set up the hanging hole that is used for connecting the spring on the connector.
Compared with the prior art, the invention has the beneficial effects that:
the pressure relief valve convenient to install is simple in structure, the partition plate and the installation block can be quickly assembled and disassembled by arranging the sliding groove and the installation hole on the valve body, the replacement process is convenient and quick, the internal parts can be replaced, maintained and cleaned without integrally disassembling the valve body, the assembly and disassembly time is saved, and the installation and maintenance efficiency is improved; the rotary sealing cover is adopted to seal the pressure relief opening, so that rapid pressure relief can be realized, the sealing cover is flexible in action, free of clamping, safe and stable; the spring is driven to stretch and retract through rotating the stud, so that the pressure relief threshold value is changed, and the adjustment is convenient and efficient.
Drawings
FIG. 1 is a schematic view of a relief valve structure that is convenient to install;
FIG. 2 is a schematic structural diagram of a valve body in a pressure relief valve convenient to install;
FIG. 3 is a schematic diagram of a diaphragm structure in a pressure relief valve that is easy to install;
FIG. 4 is a schematic diagram of a mounting block structure in a pressure relief valve that is convenient to install;
FIG. 5 is a schematic view of a locking snap ring structure in a pressure relief valve convenient to install
FIG. 6 is a schematic view of a stud structure in a pressure relief valve that is convenient to install; .
In the figure: 1. a valve body; 2. a chute; 3. mounting holes; 4. a first seal groove; 5. a second seal groove; 6. a partition plate; 7. a pressure relief port; 8. a hinged seat; 9. sealing the cover; 10. a first connecting seat; 11. a top rod; 12. a seal ring; 13. a conical surface; 14. mounting blocks; 15. a threaded hole; 16. a through hole; 17. a support frame; 18. a guide wheel; 19. a stud; 20. rotating the sleeve; 21. a second connecting seat; 22. a cable; 23. a connector; 24. a spring; 25. rotating the handle; 26. locking the snap ring; 27. a first seal ring; 28. a second seal ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship between the components, the motion situation, and the like in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if the description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, a relief valve convenient to mount comprises a valve body 1, a partition plate 6 and a mounting block 14, wherein the inner wall of the valve body 1 is provided with a chute 2, the partition plate 6 is slidably clamped in the chute 2, and the outer wall of one side of the valve body 1 is provided with a stepped mounting hole 3 for accommodating the mounting block 14;
referring to fig. 3, a pressure relief opening 7 is formed in the partition plate 6, an articulated seat 8 is arranged on an end surface of one side of the partition plate 6, which is far away from the mounting hole 3, a sealing cover 9 for sealing the pressure relief opening 7 is rotatably connected to the articulated seat 8, and a first connecting seat 10 is mounted on an end surface of one side of the sealing cover 9, which faces the pressure relief opening 7;
referring to fig. 4-5, a threaded hole 15 is formed in the mounting block 14, a through hole 16 communicated with the inside of the valve body 1 is formed in the bottom of the threaded hole 15, a support frame 17 is fixed on an end surface of the mounting block 14 facing the inside of the valve body 1, and a guide wheel 18 is rotatably mounted on the support frame 17; a locking snap ring 26 is detachably arranged between the mounting block 14 and the inner wall of the mounting hole 3;
referring to fig. 6, a threaded bolt 19 is sleeved in the threaded hole 15, a rotating sleeve 20 is rotatably arranged at one end of the threaded bolt 19 facing the threaded hole 15, a second connecting seat 21 is fixed on the rotating sleeve 20, a pulling cable 22 is detachably connected to the second connecting seat 21, the pulling cable 22 is rotatably wound on the guide wheel 18, and a spring 24 is connected between the tail end of the pulling cable 22 and the first connecting seat 10; a top rod 11 is further fixed on one side of the partition plate 6 close to the mounting block 14, and the tail end of the top rod 11 is pressed against the side wall of the mounting block 14;
specifically, during installation, one end of the spring 24 is connected with the first connecting seat 10 on the sealing cover 9, the inhaul cable 22 is connected with the other end of the spring 24, and then the partition plate 6 is placed into the valve body 1 from the installation hole 3 and slides to the bottom of the sliding groove 2 along the sliding groove 2; pulling out the inhaul cable 22 from the mounting hole 3, penetrating out of the through hole 16 and the threaded hole 15 of the mounting block 14, connecting the penetrating end of the inhaul cable 22 with the second connecting seat 21 on the stud 19, then screwing the stud 19 into the threaded hole 15, winding the inhaul cable 22 on the guide wheel 18, pressing the mounting block 14 into the mounting hole 3, enabling the side wall of the mounting block 14 to abut against the ejector rod 11, completing the fixing of the partition board 6, and finally clamping the locking clamping ring 26 between the mounting block 14 and the mounting hole 3 to complete the locking of the mounting block 14;
when the pressure relief valve is used, when the air pressure on the left side of the valve body 1 exceeds a set value, the air pressure pushes the sealing cover 9 open, so that the sealing cover 9 rotates anticlockwise around the hinge seat 8, and therefore air is discharged to the right side of the valve body 1 from the pressure relief opening 7, and pressure relief is completed; when the pressure relief threshold needs to be adjusted, the stud 19 is screwed to enable the stud 19 to spirally lift along the threaded hole 15, so that the inhaul cable 22 is driven to stretch and retract, the deformation quantity of the spring 24 is changed, the pressure between the sealing cover 9 and the pressure relief opening 7 is adjusted, and the adjustment of the pressure relief threshold is realized;
when the device is disassembled, the locking snap ring 26 is firstly pulled out, the mounting block 14 is pulled out from the mounting hole 3, the stud 19 is screwed off, the inhaul cable 22 is separated from the second connecting seat 21, and the ejector rod 11 is pinched to pull the partition plate 6 out of the chute 2;
in order to improve the overall sealing performance, a first sealing groove 4 is formed in one end, away from the mounting hole 3, of the sliding groove 2, and a first sealing ring 27 is mounted in the first sealing groove 4; a second sealing groove 5 is formed in the inner wall of the mounting hole 3, and a second sealing ring 28 is mounted in the second sealing groove 5;
the sealing performance between the partition plate 6 and the inner wall of the valve body 1 is ensured through the first sealing ring 27, and gas is prevented from leaking from the joint of the partition plate 6 and the inner wall of the valve body 1; the sealing performance between the mounting block 14 and the mounting hole 3 is ensured through the second sealing ring 28, and gas is prevented from leaking from the joint of the mounting block 14 and the mounting hole 3;
a sealing ring 12 is arranged on one side of the pressure relief opening 7 facing the sealing cover 9, and a spring 24 is used for exerting pulling force on the sealing cover 9, so that the sealing cover 9 tightly presses the sealing ring 12, and the sealing ring 12 is deformed under pressure, so that gas leakage is avoided when the gas pressure is smaller than a threshold value;
in order to avoid the influence on normal pressure relief caused by the fact that the sealing cover 9 is clamped in the pressure relief opening 7 when rotating, a tapered surface 13 is arranged on one side, facing the pressure relief opening 7, of the sealing cover 9, so that the sealing cover 9 is effectively prevented from being clamped, normal pressure relief of air is guaranteed, and the use stability and safety are improved;
in order to rotate the stud 19 conveniently, a rotating handle 25 is mounted on the stud 19, the stud 19 can be driven to rotate by holding the rotating handle 25, and the operation is convenient and labor-saving.
The working principle of the embodiment is as follows:
when the valve is installed, one end of the spring 24 is connected with the first connecting seat 10 on the sealing cover 9, the inhaul cable 22 is connected with the other end of the spring 24, and then the partition plate 6 is placed into the valve body 1 from the installation hole 3 and slides to the bottom of the sliding groove 2 along the sliding groove 2; pulling out the inhaul cable 22 from the mounting hole 3, penetrating out of the through hole 16 and the threaded hole 15 of the mounting block 14, connecting the penetrating end of the inhaul cable 22 with the second connecting seat 21 on the stud 19, then screwing the stud 19 into the threaded hole 15, winding the inhaul cable 22 on the guide wheel 18, pressing the mounting block 14 into the mounting hole 3, enabling the side wall of the mounting block 14 to abut against the ejector rod 11, completing the fixing of the partition board 6, and finally clamping the locking clamping ring 26 between the mounting block 14 and the mounting hole 3 to complete the locking of the mounting block 14; when the device is disassembled, the locking snap ring 26 is firstly pulled out, the mounting block 14 is pulled out from the mounting hole 3, the stud 19 is screwed off, the inhaul cable 22 is separated from the second connecting seat 21, and the ejector rod 11 is pinched to pull the partition plate 6 out of the chute 2; when the pressure relief valve is used, when the air pressure on the left side of the valve body 1 exceeds a set value, the air pressure pushes the sealing cover 9 open, so that the sealing cover 9 rotates anticlockwise around the hinge seat 8, and therefore air is discharged to the right side of the valve body 1 from the pressure relief opening 7, and pressure relief is completed; when the pressure relief threshold needs to be adjusted, the stud 19 is screwed to enable the stud 19 to spirally lift along the threaded hole 15, so that the inhaul cable 22 is driven to stretch and retract, the deformation quantity of the spring 24 is changed, the pressure between the sealing cover 9 and the pressure relief opening 7 is adjusted, and the adjustment of the pressure relief threshold is achieved.
Example 2
A pressure release valve convenient to install comprises a valve body 1, a partition plate 6 and an installation block 14, wherein a sliding groove 2 is formed in the inner wall of the valve body 1, the partition plate 6 is clamped in the sliding groove 2 in a sliding mode, and a stepped installation hole 3 used for accommodating the installation block 14 is formed in the outer wall of one side of the valve body 1;
a pressure relief opening 7 is formed in the partition plate 6, an articulated seat 8 is arranged on the end face of one side, away from the mounting hole 3, of the partition plate 6, a sealing cover 9 for sealing the pressure relief opening 7 is rotatably connected to the articulated seat 8, and a first connecting seat 10 is arranged on the end face of one side, facing the pressure relief opening 7, of the sealing cover 9;
a threaded hole 15 is formed in the mounting block 14, a through hole 16 communicated with the interior of the valve body 1 is formed in the bottom of the threaded hole 15, a support frame 17 is fixed on the end face, facing the interior of the valve body 1, of the mounting block 14, and a guide wheel 18 is rotatably mounted on the support frame 17; a locking snap ring 26 is detachably arranged between the mounting block 14 and the inner wall of the mounting hole 3;
a stud 19 is sleeved in the threaded hole 15 in a threaded manner, a rotating sleeve 20 is rotatably arranged at one end, facing the threaded hole 15, of the stud 19, a second connecting seat 21 is fixed on the rotating sleeve 20, a pull cable 22 is detachably connected to the second connecting seat 21, the pull cable 22 is rotatably wound on a guide wheel 18, and a spring 24 is connected between the tail end of the pull cable 22 and the first connecting seat 10; a top rod 11 is further fixed on one side of the partition plate 6 close to the mounting block 14, and the tail end of the top rod 11 is pressed against the side wall of the mounting block 14;
in order to facilitate quick assembly and disassembly of the cable 22 and the spring 24, the connector 23 is arranged at one end of the cable 22 facing the spring 24, a hanging hole for connecting the spring 24 is formed in the connector 23, one end of the spring 24 is clamped into the hanging hole, connection of the cable 22 and the spring 24 can be completed, and the assembly and disassembly are convenient and quick.
The pressure relief valve convenient to install is simple in structure, the sliding groove 2 and the installation hole 3 are formed in the valve body 1, so that the partition plate 6 and the installation block 14 can be quickly assembled and disassembled, the replacement process is convenient and quick, the internal parts can be replaced, maintained and cleaned without integrally disassembling the valve body 1, the assembly and disassembly time is saved, and the installation and maintenance efficiency is improved; the rotary sealing cover 9 is adopted to seal the pressure relief opening 7, so that rapid pressure relief can be realized, the sealing cover 9 is flexible in action, free of clamping, safe and stable; the stud 19 is rotated to drive the spring 24 to stretch and retract, so that the pressure relief threshold value is changed, and the adjustment is convenient and efficient.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. The pressure release valve convenient to install is characterized by comprising a valve body (1), a partition plate (6) and an installation block (14), wherein a sliding groove (2) is formed in the inner wall of the valve body (1), the partition plate (6) is clamped in the sliding groove (2) in a sliding manner, and a stepped installation hole (3) used for accommodating the installation block (14) is formed in the outer wall of one side of the valve body (1);
a pressure relief opening (7) is formed in the partition plate (6), a hinged seat (8) is arranged on the end face, far away from the mounting hole (3), of one side of the partition plate (6), a sealing cover (9) used for sealing the pressure relief opening (7) is rotatably connected to the hinged seat (8), and a first connecting seat (10) is arranged on the end face, facing the pressure relief opening (7), of one side of the sealing cover (9);
a threaded hole (15) is formed in the mounting block (14), a through hole (16) communicated with the interior of the valve body (1) is formed in the bottom of the threaded hole (15), a supporting frame (17) is fixed on the end face, facing the interior of the valve body (1), of the mounting block (14), and a guide wheel (18) is rotatably mounted on the supporting frame (17); a locking snap ring (26) is detachably arranged between the mounting block (14) and the inner wall of the mounting hole (3);
a stud (19) is sleeved in an internal thread of the threaded hole (15), a rotating sleeve (20) is rotatably arranged at one end, facing the interior of the threaded hole (15), of the stud (19), a second connecting seat (21) is fixed on the rotating sleeve (20), a pull cable (22) is detachably connected to the second connecting seat (21), the pull cable (22) is rotatably wound on the guide wheel (18), and a spring (24) is connected between the tail end of the pull cable (22) and the first connecting seat (10); and a push rod (11) is further fixed on one side of the partition plate (6) close to the mounting block (14), and the tail end of the push rod (11) is pressed against the side wall of the mounting block (14).
2. A pressure relief valve convenient to install according to claim 1, characterized in that, a first sealing groove (4) is opened at one end of the chute (2) far away from the installation hole (3), and a first sealing ring (27) is installed in the first sealing groove (4).
3. A pressure relief valve convenient to install according to claim 2, characterized in that, a second seal groove (5) is opened on the inner wall of the installation hole (3), and a second seal ring (28) is installed in the second seal groove (5).
4. A relief valve convenient to install according to claim 1, characterized in that the side of the relief opening (7) facing the closure cap (9) is provided with a sealing ring (12).
5. A relief valve for mounting convenience according to claim 4 wherein the side of the closure (9) facing the relief opening (7) is provided with a tapered surface (13).
6. A relief valve for mounting convenience according to claim 1 wherein a twist grip (25) is mounted on the stud (19).
7. A conveniently installed pressure relief valve according to any one of claims 1 to 6, characterized in that a connector (23) is provided at one end of the stay cable (22) facing the spring (24), and a hanging hole for connecting the spring (24) is provided on the connector (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464783.0A CN112228604B (en) | 2020-12-14 | 2020-12-14 | Simple to operate's relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464783.0A CN112228604B (en) | 2020-12-14 | 2020-12-14 | Simple to operate's relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112228604A CN112228604A (en) | 2021-01-15 |
| CN112228604B true CN112228604B (en) | 2021-02-26 |
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ID=74124508
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464783.0A Active CN112228604B (en) | 2020-12-14 | 2020-12-14 | Simple to operate's relief valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN112228604B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586775B (en) * | 2021-07-26 | 2023-05-09 | 永嘉瑞杰阀门制造有限公司 | Explosion-proof valve |
| CN115013573B (en) * | 2022-08-10 | 2022-12-06 | 上海宝邦医疗器械有限公司 | Air compressor pressure valve capable of accurately adjusting pressure |
| CN115773394B (en) * | 2023-02-13 | 2023-05-02 | 通威微电子有限公司 | Residual pressure valve and air conditioning chamber |
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|---|---|---|---|---|
| US3106220A (en) * | 1961-09-13 | 1963-10-08 | Atwood & Morrill Co Inc | Check valve, with dashpot |
| CN201491501U (en) * | 2009-08-28 | 2010-06-02 | 张云翔 | Automatic clutch of fertilization seeder |
| CN204213413U (en) * | 2014-10-16 | 2015-03-18 | 浙江特一阀门有限公司 | A kind of spring is slow opens quick-closure check valve |
| CN206738703U (en) * | 2017-02-22 | 2017-12-12 | 陈玉华 | A kind of rubber clack |
| CN206802393U (en) * | 2017-05-31 | 2017-12-26 | 天津市华利达阀门有限公司 | Swing check valve |
| CN208311566U (en) * | 2018-05-14 | 2019-01-01 | 濮阳龙丰纸业有限公司 | A kind of Novel swing check valve |
| CN209294479U (en) * | 2018-11-20 | 2019-08-23 | 南通龙源电站阀门有限公司 | A kind of built-in swing check valve |
| CN210770322U (en) * | 2019-10-29 | 2020-06-16 | 淄博东一环保科技有限公司 | Check valve suitable for self priming pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7275560B2 (en) * | 2004-09-29 | 2007-10-02 | A.J. Manufacturing, Inc. | Pressure relief door for air duct work |
-
2020
- 2020-12-14 CN CN202011464783.0A patent/CN112228604B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3106220A (en) * | 1961-09-13 | 1963-10-08 | Atwood & Morrill Co Inc | Check valve, with dashpot |
| CN201491501U (en) * | 2009-08-28 | 2010-06-02 | 张云翔 | Automatic clutch of fertilization seeder |
| CN204213413U (en) * | 2014-10-16 | 2015-03-18 | 浙江特一阀门有限公司 | A kind of spring is slow opens quick-closure check valve |
| CN206738703U (en) * | 2017-02-22 | 2017-12-12 | 陈玉华 | A kind of rubber clack |
| CN206802393U (en) * | 2017-05-31 | 2017-12-26 | 天津市华利达阀门有限公司 | Swing check valve |
| CN208311566U (en) * | 2018-05-14 | 2019-01-01 | 濮阳龙丰纸业有限公司 | A kind of Novel swing check valve |
| CN209294479U (en) * | 2018-11-20 | 2019-08-23 | 南通龙源电站阀门有限公司 | A kind of built-in swing check valve |
| CN210770322U (en) * | 2019-10-29 | 2020-06-16 | 淄博东一环保科技有限公司 | Check valve suitable for self priming pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112228604A (en) | 2021-01-15 |
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