CN216200932U - Pressure-limiting flow-limiting valve - Google Patents
Pressure-limiting flow-limiting valve Download PDFInfo
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- CN216200932U CN216200932U CN202122516975.8U CN202122516975U CN216200932U CN 216200932 U CN216200932 U CN 216200932U CN 202122516975 U CN202122516975 U CN 202122516975U CN 216200932 U CN216200932 U CN 216200932U
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Abstract
The utility model discloses a pressure-limiting flow-limiting valve, comprising: the valve body is internally provided with a valve body cavity, and the valve body is provided with a first through hole and a second through hole which are respectively communicated with the valve body cavity; a self-closing assembly, the self-closing assembly comprising: the pull rod and the leather membrane are arranged in the valve body cavity, one end of the pull rod extends out of the valve body, the leather membrane is connected with the other end of the pull rod, and the periphery of the leather membrane is connected with the periphery of the valve body; the valve body intracavity is located to the linkage subassembly, and the linkage subassembly includes: the sealing element is arranged on the connecting rod assembly, the sealing element is in sealing fit with the first through hole, and the pull rod is opposite to the connecting rod assembly; and a magnetic part is arranged on the other end of the pull rod and/or the connecting rod assembly and is used for enabling the pull rod and the connecting rod assembly to be in adsorption fit. The utility model has the functions of overpressure, underpressure self-closing and overcurrent cut-off, and the flow of the fluid channel is stable.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a pressure-limiting flow-limiting valve.
Background
The gas self-closing valve for pipeline is installed in the upstream of kitchen range, and can be used for cutting off gas when the pressure and flow rate of indoor gas system are abnormal, after the fault reason can be found out and fault can be removed, the gas supply can be recovered manually, and when the pressure of gas supply for pipeline is under-pressure and over-pressure, it does not use electricity or other external power, and can be automatically closed and must be manually opened.
The common self-closing valve has the main structure of a diaphragm type structure, and the diaphragm type structure is mainly characterized in that a diaphragm is used as a main driving element, fuel gas passes through a lower cavity of the diaphragm, an upper cavity of the diaphragm is communicated with the atmosphere, the diaphragm moves up and down under the action of the pressure of the fuel gas, and a valve clack is controlled to move in the axial direction (horizontal direction) through a connecting rod to complete opening and closing of the valve.
At present, self-closing valves in the industry mainly have the problems of low reliability of self-closing control, unstable channel flow and the like.
Disclosure of Invention
Aiming at the problems of the existing self-closing valve, the utility model aims to provide a pressure-limiting flow-limiting valve which has the functions of overpressure, underpressure self-closing and overcurrent cutoff and has stable flow of a fluid channel.
The specific technical scheme is as follows:
a pressure limiting flow limiting valve comprising:
the valve comprises a valve body, a valve body cavity and a valve body, wherein the valve body is internally provided with a first through hole and a second through hole which are respectively communicated with the valve body cavity;
a self-closing assembly, the self-closing assembly comprising: the pull rod and the leather membrane are arranged in the valve body cavity, one end of the pull rod extends out of the valve body, the leather membrane is connected with the other end of the pull rod, and the periphery of the leather membrane is connected with the periphery of the valve body;
the linkage subassembly, the linkage subassembly is located the valve body intracavity, the linkage subassembly includes: the sealing element is arranged on the connecting rod assembly, the sealing element is in sealing fit with the first through hole, and the pull rod is opposite to the connecting rod assembly;
and a magnetic part is arranged on the other end of the pull rod and/or the connecting rod assembly, and the magnetic part is used for enabling the pull rod to be in adsorption fit with the connecting rod assembly.
The above-mentioned pressure-limiting and flow-limiting valve, wherein, the self-closing assembly further comprises: the lifting component is arranged on the valve body, and one end of the pull rod is connected with the lifting component.
The above-mentioned pressure limiting current limiting valve, wherein, the subassembly of pulling includes: carry button, suggestion button, limit button and first elastic component, limit button locates on the valve body, it slides and locates to carry the button on the valve body, the suggestion button cover is located on the limit button, the one end of pull rod is run through the valve body with limit button, and with the suggestion button is connected, the both ends of first elastic component are supported respectively and are located carry the button with between the suggestion button.
The above-mentioned pressure limiting restriction valve, wherein, the link assembly includes: the sealing device comprises a connecting rod, a lever and a push rod, wherein one end of the connecting rod is opposite to the other end of the pull rod, one end of the lever is in transmission connection with the other end of the connecting rod, one end of the push rod is in transmission connection with the other end of the lever, the sealing element is arranged at the other end of the push rod, and the magnetic element is arranged at the other end of the pull rod and/or the connecting rod.
In the pressure-limiting and flow-limiting valve, a plurality of flow guiding edges are arranged on the periphery of the push rod, at least part of each flow guiding edge is located in the first through hole, the flow guiding edges are respectively abutted against the peripheral wall of the first through hole, the flow guiding edges are arranged at equal intervals along the circumferential direction of the push rod, and a flow channel is formed between two adjacent flow guiding edges;
the radius of the periphery of the push rod is R, and the radius of a circle formed by the outer side wall of the flow guide edge is R, R: r is 40-60%.
In the pressure-limiting and flow-limiting valve, the magnetic part is mounted at one end of the connecting rod, and the magnetic part is in adsorption fit with the other end of the pull rod.
The pressure-limiting and flow-limiting valve mentioned above, wherein the connecting rod assembly further comprises: the support, the support with the valve body is connected, the connecting rod install in the support, and with support sliding connection, the lever with the support is rotated and is connected.
In the pressure-limiting and flow-limiting valve, the middle part of the lever is rotatably connected with the bracket, one end of the lever extends into or penetrates through the other end of the connecting rod, and the other end of the lever extends into or penetrates through one end of the push rod.
The pressure-limiting and flow-limiting valve is characterized in that the valve body is provided with an inlet, the inlet is provided with a flow passing assembly, and the flow passing assembly comprises: gland, main part, direction lid and second elastic component, the gland is located the valve body the import department, the main part is located on the gland, the third port has in the main part, the direction lid with the main part or gland sliding fit, the direction lid with the sealed cooperation of third port, the both ends of second elastic component respectively with the main part with between the direction lid, it has an at least fourth port, and is a plurality of all towards to press to cover the fourth port the direction.
The pressure-limiting and flow-limiting valve is characterized in that an outlet is further formed in the valve body, a ball valve assembly is arranged between the outlet and the second port in the valve body, and the ball valve assembly comprises: the ball body is movably arranged in the valve body, the two valve seats are respectively arranged on two sides of the ball body and between the valve body, one end of the valve rod is connected with the ball body, and the other end of the valve rod penetrates through the valve body and is connected with the handle.
Compared with the prior art, the technical scheme has the positive effects that:
the utility model realizes the high-efficiency self-closing cut-off of overpressure, undervoltage and overcurrent of the valve by the self-closing component, the linkage component, the overcurrent component and the like, and realizes the flow stability by arranging a reasonable runner cavity.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 2 is a schematic view of a partial structure of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 3 is a schematic structural view of a bracket of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 4 is a schematic structural view of a bracket of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 5 is a schematic structural view of a connecting rod of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 6 is a cross-sectional view of the structure of a connecting rod of a pressure limiting and flow limiting valve according to the present invention;
FIG. 7 is a schematic structural view of a push rod of a pressure-limiting and flow-limiting valve according to the present invention;
FIG. 8 is a sectional view of the push rod of a pressure limiting and flow limiting valve according to the present invention;
FIG. 9 is a side view of the push rod of a pressure limiting and flow limiting valve of the present invention;
FIG. 10 is a cross-sectional view of a flow restrictor assembly for a pressure limiting and flow limiting valve in accordance with the present invention;
in the drawings: 1. a valve body; 2. a self-closing component; 3. a linkage assembly; 4. a pull-up assembly; 5. a connecting rod assembly; 6. a current passing assembly; 7. a ball valve assembly; 8. an upper valve cavity; 9. a lower valve cavity; 10. a valve body cavity; 11. a first port; 12. a second port; 13. a third port; 14. a fourth port; 15. an inlet; 16. an outlet; 17. a main valve body; 18. a housing; 19. a valve cover; 21. a pull rod; 22. a skin membrane; 31. a seal member; 32. a magnetic member; 41. lifting the button; 42. a prompt button; 43. a limit button; 44. a first elastic member; 51. a connecting rod; 52. a lever; 53. a push rod; 54. a support; 55. a connecting rod hole; 56. a pin hole; 57. a limiting hole; 58. a flow guiding edge; 59. a flow channel; 60. a pin shaft; 61. a gland; 62. a main body; 63. a guide cover; 64. a second elastic member; 65. a guide hole; 71. a sphere; 72. a valve seat; 73. a valve stem; 74. a handle.
Detailed Description
The utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Fig. 1 is an overall structural sectional view of a pressure limiting and flow limiting valve of the present invention, fig. 2 is a partial structural schematic view of the pressure limiting and flow limiting valve of the present invention, fig. 3 is a structural schematic view of a bracket of the pressure limiting and flow limiting valve of the present invention, fig. 4 is a structural schematic view of the bracket of the pressure limiting and flow limiting valve of the present invention, fig. 5 is a structural schematic view of a connecting rod of the pressure limiting and flow limiting valve of the present invention, fig. 6 is a structural sectional view of the connecting rod of the pressure limiting and flow limiting valve of the present invention, fig. 7 is a structural schematic view of a push rod of the pressure limiting and flow limiting valve of the present invention, fig. 8 is a structural sectional view of the push rod of the pressure limiting and flow limiting valve of the present invention, fig. 9 is a structural side view of the push rod of the pressure limiting and flow limiting valve of the present invention, fig. 10 is a structural sectional view of a flow passing assembly of the pressure limiting and flow limiting valve of the present invention, and flow limiting valve of the present invention is shown in fig. 1 to fig. 10, the method comprises the following steps: valve body 1, self-closing subassembly 2 and linkage assembly 3, valve body 1 is interior to have valve body chamber 11, has first through-hole 11 and second through-hole 12 that are linked together with valve body chamber 10 respectively on the valve body 1, and self-closing subassembly 2 includes: pull rod 21 and involucra 22, in valve body chamber 10 was all located to pull rod 21 and involucra 22, valve body 1 was stretched out to the one end of pull rod 21, and involucra 22 is connected with pull rod 21's the other end, and the periphery of involucra 22 is connected with valve body 1's week side, and in valve body chamber 10 was located to linkage subassembly 3, linkage subassembly 3 included: the connecting rod assembly 5 and sealing member 31, sealing member 31 locates on the connecting rod assembly 5, and sealing member 31 and first through hole 11 seal cooperation, and pull rod 21 is just right with connecting rod assembly 5.
Further, as a preferred embodiment, a magnetic member 32 is disposed on the other end of the pull rod 21 and/or the connecting rod assembly 5, and the magnetic member 32 is used for attracting and engaging the pull rod 21 and the connecting rod assembly 5.
Further, as a preferred embodiment, the self-closing assembly 2 further comprises: the lifting component 4 is arranged on the valve body 1, and one end of the pull rod 21 is connected with the lifting component 4.
Further, as a preferred embodiment, the pulling assembly 4 includes: carry button 41, suggestion button 42, limit button 43 and first elastic component 44, on limit button 43 located valve body 1, carry button 41 and slide on locating valve body 1, on the limit button 43 was located to the suggestion button 42 cover, valve body 1 and limit button 43 were run through to the one end of pull rod 21, and were connected with suggestion button 42, the both ends of first elastic component 44 are supported respectively and are located between carrying button 41 and the suggestion button 42.
Further, as a preferred embodiment, the connecting rod assembly 5 includes: the sealing device comprises a connecting rod 51, a lever 52 and a push rod 53, wherein one end of the connecting rod 51 is opposite to the other end of the pull rod 21, one end of the lever 52 is in transmission connection with the other end of the connecting rod 51, one end of the push rod 53 is in transmission connection with the other end of the lever 52, a sealing element 31 is arranged at the other end of the push rod 53, and a magnetic element 32 is arranged at the other end of the pull rod 21 and/or the connecting rod 51.
Further, as a preferred embodiment, the magnetic member 32 is mounted on one end of the connecting rod 51, and the magnetic member 32 is in suction fit with the other end of the pull rod 21.
Further, as a preferred embodiment, the connecting rod assembly 5 further includes: the bracket 54, the bracket 54 is connected with the valve body 1, the connecting rod 51 is arranged in the bracket 54 and is connected with the bracket 54 in a sliding way, and the lever 52 is connected with the bracket 54 in a rotating way.
Further, as a preferred embodiment, the middle portion of the lever 52 is pivotally connected to the bracket 54, one end of the lever 52 extends into or through the other end of the connecting rod 51, and the other end of the lever 52 extends into or through one end of the push rod 53.
Further, as a preferred embodiment, the pull rod 21 is disposed coaxially with the connecting rod 51.
The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, please refer to fig. 1 to fig. 10, an inlet 15 is provided on the valve body 1, a flow passing assembly 6 is provided at the inlet 15, the flow passing assembly 6 includes: the valve comprises a gland 61, a main body 62, a guide cover 63 and a second elastic part 64, wherein the gland 61 is arranged at an inlet of the valve body 1, the main body 62 is arranged on the gland 61, the main body 62 is provided with a third through hole 13, the guide cover 63 is in sliding fit with the main body 62 or the gland 61, the guide cover 63 is in sealing fit with the third through hole 13, two ends of the second elastic part 64 are respectively arranged between the main body 62 and the guide cover 63, the gland 61 is provided with at least one fourth through hole 14, and the plurality of fourth through holes 14 face the guide cover 63.
In a further embodiment of the present invention, the valve body 1 further has an outlet 16, a ball valve assembly 7 is disposed in the valve body 1 between the outlet 16 and the second port 12, and the ball valve assembly 7 includes: the ball 71 is movably arranged in the valve body 1, the two valve seats 72 are respectively arranged between two sides of the ball 71 and the valve body 1, one end of the valve rod 73 is connected with the ball 71, and the other end of the valve rod 73 penetrates through the valve body 1 and is connected with the handle 74.
Preferably, the valve body 1 comprises: a main valve body 17, a housing 18, and a bonnet 19, the housing 18 and the main valve body 17 forming a valve body chamber 10 therebetween, the bonnet 19 and the main valve body 17 having a ball valve assembly 7 disposed therebetween.
Preferably, the outer periphery of the coating 22 is interposed between the housing 18 and the main valve body 17, the valve body 1 cavity is partitioned into an upper valve cavity 8 and a lower valve cavity 9 by the coating 22, the upper valve cavity 8 communicates with the outside, and the lower valve cavity 9 communicates with the first port 11 and the second port 12, respectively.
Preferably, the pull rod 21 is arranged in the upper valve cavity 8, the connecting rod assembly 5 is arranged in the lower valve cavity 9, and both the pull rod 21 and the connecting rod 51 move up and down.
Preferably, the first elastic member 44 and the second elastic member 64 are both springs.
Preferably, the bracket 54 has a link hole 55, and the link 51 is slidably disposed in the link hole 55.
Preferably, the bracket 54 has a pin hole 56, and the middle portion of the lever 52 is rotatably connected to the pin hole 56 by a pin 60.
Preferably, the other end of the connecting rod 51 and one end of the push rod 53 are both provided with a limiting hole 57, and both ends of the lever 52 respectively penetrate or extend into the two limiting holes 57.
Preferably, a plurality of flow guiding edges 58 are arranged on the periphery of the push rod 53, at least part of the flow guiding edges 58 are located in the first through opening 11, the flow guiding edges 58 are arranged at equal intervals along the circumferential direction of the push rod 53, and a flow channel 59 is formed between two adjacent flow guiding edges 58.
Preferably, the radius of the outer circumference of the push rod 53 is R, and the radius of a circle formed by the outer sides of the plurality of guide edges 58 is R, R: r is 40-60%. Preferably, r: r is 50-60%.
Preferably, the main body 62 and the pressing cover 61 are provided with opposite guide holes 65, and both ends of the guide cover 63 are slidably engaged with the two guide holes 65, respectively.
Preferably, the body 62 is threadedly coupled to the valve body 1.
Preferably, the seal is a 31-position seal.
Before the valve is installed, the valve is in a self-closing state, the other end of the pull rod 21 is attracted with the magnetic element 32, the membrane 22 is in a lower state, the sealing element 31 blocks the first through hole 11, and the third through hole 13 is separated from the guide cover 63. When the valve is installed on a gas pipeline, the gas pipeline is normally ventilated, the once lifting button 41 is lifted, the coating 22 is in a middle position state, the magnetic piece 32 and the connecting rod 51 rise along with the pull rod 21, one end of the lever 52 is lifted upwards, the push rod 53 is moved towards one end of the inlet by the other end of the lever 52 through the rotation of the lever 52, the sealing piece 31 is separated from the sealing fit with the first through hole 11, a channel is formed between the sealing piece 31 and the first through hole 11, the valve is in a normal working state, and the third through hole 13 is separated from the guide cover 63.
When overpressure occurs in the pipeline, the film 22 is influenced by pressure to rise from the middle position to the upper position, the lever 52 limits the vertical moving range of the connecting rod 51, the film 22 enables the pull rod 21 to rise excessively, and meanwhile, the magnetic element 32 and the connecting rod 51 cannot rise any more, therefore, the magnetic element 32 and the pull rod 21 are separated from the adsorption fit, the magnetic element 32 and the connecting rod 51 fall into the bracket 54 along with the self gravity of the magnetic element, one end of the lever 52 is driven to fall, the other end of the lever 52 enables the push rod 53 to move towards the end far away from the inlet 15 through the rotation of the lever 52, the sealing element 31 blocks the first through hole 11, and the self-closing of the valve is realized.
When the pipeline has an under-pressure condition, the film 22 descends to a lower position, the magnetic element 32 and the connecting rod 51 descend along with the pull rod 21, one end of the lever 52 is driven to descend, the other end of the lever 52 enables the push rod 53 to move towards one end far away from the inlet 15 through the rotation of the lever 52, and the sealing element 31 blocks the first through hole 11, so that the valve self-closing is realized.
When the pipeline overflows, the guide cover 63 is influenced by fluid to overcome the resistance of the second elastic piece 64, and is combined with the main body 62, and the guide cover 63 is in plugging fit with the third through hole 13, so that the valve is closed automatically.
The utility model realizes the high-efficiency self-closing cut-off of overpressure, undervoltage and overcurrent of the valve by the self-closing component 2, the linkage component 3, the overcurrent component 6 and the like, and realizes the flow stability by arranging a reasonable runner cavity.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (10)
1. A pressure limiting and flow limiting valve, comprising:
the valve comprises a valve body, a valve body cavity and a valve body, wherein the valve body is internally provided with a first through hole and a second through hole which are respectively communicated with the valve body cavity;
a self-closing assembly, the self-closing assembly comprising: the pull rod and the leather membrane are arranged in the valve body cavity, one end of the pull rod extends out of the valve body, the leather membrane is connected with the other end of the pull rod, and the periphery of the leather membrane is connected with the periphery of the valve body;
the linkage subassembly, the linkage subassembly is located the valve body intracavity, the linkage subassembly includes: the sealing element is arranged on the connecting rod assembly, the sealing element is in sealing fit with the first through hole, and the pull rod is opposite to the connecting rod assembly;
and a magnetic part is arranged on the other end of the pull rod and/or the connecting rod assembly, and the magnetic part is used for enabling the pull rod to be in adsorption fit with the connecting rod assembly.
2. The pressure limiting flow limiting valve as recited in claim 1 wherein the self-closing assembly further comprises: the lifting component is arranged on the valve body, and one end of the pull rod is connected with the lifting component.
3. The pressure limiting flow limiting valve of claim 2 wherein the pull assembly comprises: carry button, suggestion button, limit button and first elastic component, limit button locates on the valve body, it slides and locates to carry the button on the valve body, the suggestion button cover is located on the limit button, the one end of pull rod is run through the valve body with limit button, and with the suggestion button is connected, the both ends of first elastic component are supported respectively and are located carry the button with between the suggestion button.
4. The pressure limiting flow limiting valve of claim 1 wherein the linkage assembly comprises: the sealing device comprises a connecting rod, a lever and a push rod, wherein one end of the connecting rod is opposite to the other end of the pull rod, one end of the lever is in transmission connection with the other end of the connecting rod, one end of the push rod is in transmission connection with the other end of the lever, the sealing element is arranged at the other end of the push rod, and the magnetic element is arranged at the other end of the pull rod and/or the connecting rod.
5. The pressure-limiting and flow-limiting valve according to claim 4, wherein a plurality of flow-guiding edges are arranged on the periphery of the push rod, at least part of each flow-guiding edge is located in the first through hole, the flow-guiding edges are respectively abutted against the peripheral wall of the first through hole, the flow-guiding edges are arranged at equal intervals along the circumferential direction of the push rod, and a flow channel is formed between two adjacent flow-guiding edges;
the radius of the periphery of the push rod is R, and the radius of a circle formed by the outer side wall of the flow guide edge is R, R: r is 40-60%.
6. The pressure limiting and flow limiting valve as recited in claim 4, wherein the magnetic member is mounted on one end of the connecting rod, and the magnetic member is in suction fit with the other end of the pull rod.
7. The pressure limiting flow limiting valve of claim 4 wherein the linkage assembly further comprises: the support, the support with the valve body is connected, the connecting rod install in the support, and with support sliding connection, the lever with the support is rotated and is connected.
8. The pressure-limiting and flow-limiting valve as recited in claim 7, wherein the middle part of the lever is rotatably connected with the bracket, one end of the lever extends into or through the other end of the connecting rod, and the other end of the lever extends into or through one end of the push rod.
9. The pressure limiting and flow limiting valve as recited in claim 1, wherein the valve body is provided with an inlet, and a flow passing assembly is arranged at the inlet, and the flow passing assembly comprises: gland, main part, direction lid and second elastic component, the gland is located the valve body the import department, the main part is located on the gland, the third port has in the main part, the direction lid with the main part or gland sliding fit, the direction lid with the sealed cooperation of third port, the both ends of second elastic component respectively with the main part with between the direction lid, it has an at least fourth port, and is a plurality of all towards to press to cover the fourth port the direction.
10. The pressure limiting and flow limiting valve of claim 1, further comprising an outlet in the valve body, wherein a ball valve assembly is disposed in the valve body between the outlet and the second port, the ball valve assembly comprising: the ball body is movably arranged in the valve body, the two valve seats are respectively arranged on two sides of the ball body and between the valve body, one end of the valve rod is connected with the ball body, and the other end of the valve rod penetrates through the valve body and is connected with the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122516975.8U CN216200932U (en) | 2021-10-19 | 2021-10-19 | Pressure-limiting flow-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122516975.8U CN216200932U (en) | 2021-10-19 | 2021-10-19 | Pressure-limiting flow-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216200932U true CN216200932U (en) | 2022-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122516975.8U Active CN216200932U (en) | 2021-10-19 | 2021-10-19 | Pressure-limiting flow-limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216200932U (en) |
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2021
- 2021-10-19 CN CN202122516975.8U patent/CN216200932U/en active Active
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