CN217003253U - Gas self-closing valve with adjustable under-pressure self-closing pressure - Google Patents
Gas self-closing valve with adjustable under-pressure self-closing pressure Download PDFInfo
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- CN217003253U CN217003253U CN202121412050.2U CN202121412050U CN217003253U CN 217003253 U CN217003253 U CN 217003253U CN 202121412050 U CN202121412050 U CN 202121412050U CN 217003253 U CN217003253 U CN 217003253U
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Abstract
The utility model discloses an under-pressure self-closing pressure-adjustable gas self-closing valve which comprises a valve body, a vertical valve rod, a leather cup and a valve cover, wherein a valve cavity is arranged in the valve body, the vertical valve rod can be movably arranged in the valve cavity up and down, the vertical valve rod is fixedly connected with the leather cup, a slidable magnetic ring is sleeved on the upper portion of the vertical valve rod, the magnetic ring is movably arranged in a guide sleeve at the top of the valve cover, the upper end of the vertical valve rod is connected with an end cap, an annular step is arranged on the upper portion of the vertical valve rod, an annular sealing ring is sleeved on the step, the end cap is connected to the end portion of the vertical valve rod in an up-and-down adjusting mode through a bolt, and the end portion of the end cap abuts against the magnetic ring. The magnetic ring can compress the sealing ring through the adjustment of the bolt, so that the thickness of the sealing ring is changed, the distance between the magnetic ring and the bottom of the guide sleeve is further adjusted, the magnetic attraction between the magnetic ring and the bottom of the guide sleeve is changed, the magnetic attraction can be easily adjusted to a set self-closing pressure value, and the qualification rate of products is greatly improved.
Description
Technical Field
The utility model relates to a gas self-closing valve, in particular to a gas self-closing valve with adjustable under-pressure self-closing pressure.
Background
The gas self-closing valve is arranged on a gas pipeline in front of the stove, has an automatic closing function when the gas pipeline is cut off, and has multiple functions of automatically closing under pressure, high temperature and the like.
The utility model discloses a Chinese patent authorization publication No. CN 211779235U high-sensitivity gas self-closing valve, which comprises a valve body and a vertical valve rod, the valve comprises a leather cup and a valve cover, wherein a valve cavity is arranged in a valve body, the valve cavity is provided with an upper opening, the upper opening is covered and sealed by the leather cup, the valve cover is positioned above the leather cup to fix the leather cup, one end of the valve body is provided with an air outlet, the other end of the valve body is provided with an air inlet, the air inlet is communicated with the valve cavity through a valve hole, a vertical valve rod can be movably arranged in the valve cavity up and down, the vertical valve rod is fixedly connected with the leather cup, the upper end of the vertical valve rod is connected with magnetic steel, the magnetic steel is movably arranged in a guide sleeve at the top of the valve cover, the bottom of the guide sleeve is fixedly provided with an iron sheet, the part of the vertical valve rod, which is positioned in the valve cavity, is fixedly connected with a cone, the side of the cone is provided with a tip cone, the tip cone is connected with one end of a transverse valve rod under the action of a spring, and the other end of the transverse valve rod passes through the valve hole to be connected with a plug; in the normal pressure air supply state, the tip of the cone is opposite to the cone top of the tip cone.
The working principle is as follows: under the normal pressure air supply state of a gas pipeline, the tip of a cone on a vertical valve rod is just right opposite to the top cone top on a transverse valve rod, when the air supply pressure generates under-pressure or high-pressure change, the tip of the cone and the top cone top are staggered up and down by the downward movement or upward movement of the vertical valve rod, so that under the action of a tower-shaped spring, the top cone moves leftwards, the transverse valve rod drives a plug to move leftwards, the plug closes a valve hole along the airflow direction, the under-pressure and high-pressure automatic closing function of the gas self-closing valve is realized, and the plug closes the valve hole along the airflow direction, so that the good sealing of the plug can be ensured no matter how the under-pressure and the high-pressure change.
In actual work, the vertical valve rod on the individual self-closing valve cannot be self-closed under the set under-pressure due to assembly errors, so that the under-pressure self-closing failure is caused, the main reason is that the interval between the magnetic ring and the iron sheet cannot be adjusted, and if errors exist during assembly, the inconsistent distance between the magnetic ring and the iron sheet can be influenced, so that the self-closing inconsistency is caused when the air pressure in the valve cavity is reduced to the set pressure, the mass products are unqualified, and the yield of the products is influenced.
Disclosure of Invention
In order to solve the problems, the utility model aims to provide a gas self-closing valve with adjustable under-pressure self-closing pressure, so that when the gas self-closing valve reaches the set self-closing pressure through adjustment, a self-closing function is started.
In order to achieve the purpose, the utility model provides the following technical scheme: a fuel gas self-closing valve with adjustable under-pressure self-closing pressure comprises a valve body, a vertical valve rod, a leather cup and a valve cover, wherein a valve cavity is arranged in the valve body, the valve cavity is provided with an upper opening, the upper opening is covered and sealed by the leather cup, the leather cup is fixed by the valve cover, one end of the valve body is provided with an air outlet, the other end of the valve body is provided with an air inlet, the air inlet is communicated with the valve cavity through the valve hole, the vertical valve rod can be movably arranged in the valve cavity up and down, the vertical valve rod is fixedly connected with the leather cup, the upper part of the vertical valve rod is sleeved with a slidable magnetic ring, the magnetic ring is movably arranged in a guide sleeve at the top of the valve cover, the upper end of the vertical valve rod is connected with an end cap, the part of the vertical valve rod, which is positioned in the valve cavity, is fixedly connected with a cone, the side of the cone is abutted against the cone under the action of a spring, the top cone is connected with one end of a transverse valve rod, and the other end of the transverse valve rod penetrates through the valve hole to be connected with an end cap; at normal pressure air feed state, the apex of the tip of cone and apex cone are just right, its characterized in that: the upper part of the vertical valve rod is provided with an annular step, an annular sealing ring is sleeved on the step, the end cap is connected to the end part of the vertical valve rod in a vertically adjustable manner through a bolt, the end part of the end cap abuts against the magnetic ring, and the magnetic ring is in contact with the sealing ring.
One or more gaskets are also disposed between the end cap and the magnet ring.
According to the structure, the magnetic ring can compress the sealing ring through the adjustment of the bolt, so that the thickness of the sealing ring is changed, the distance between the magnetic ring and the bottom of the guide sleeve is further adjusted, the magnetic attraction force between the magnetic ring and the bottom of the guide sleeve is changed, the magnetic attraction force can be easily adjusted to the set self-closing pressure value, and the product percent of pass is greatly improved.
The utility model is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an enlarged view of a in fig. 1.
Detailed Description
The following examples are given to illustrate the present invention and should not be construed as limiting the scope of the present invention.
As shown in fig. 1 and fig. 2, the embodiment discloses a gas self-closing valve with adjustable under-pressure self-closing pressure, which comprises a valve body 1, a vertical valve rod 2, a leather cup 3 and a valve cover 4, wherein a valve cavity 11 is arranged in the valve body 1, the valve cavity 11 is provided with an upper opening, the upper opening is covered and sealed by the leather cup 3, the valve cover 4 is positioned above the leather cup 3 to fix the leather cup 3, one end of the valve body 1 is provided with an air outlet 10, the other end is provided with an air inlet 20, the air inlet 20 is communicated with the valve cavity 11 through the valve hole, the vertical valve rod 2 can be movably arranged in the valve cavity 11 up and down, the vertical valve rod 2 is fixedly connected with the leather cup 3, the upper part of the vertical valve rod 2 is sleeved with a slidable magnetic ring 5, the magnetic ring 5 is movably arranged in a guide sleeve 41 at the top of the valve cover 4, the valve cover 4 is made of iron, the outer wall of the guide sleeve 41 is provided with a knob 6, the upper end cap 7 is connected with the upper end of the vertical valve rod 2, part of the vertical valve rod 2 positioned in the valve cavity 11 is fixedly connected with a cone, a tip cone is arranged beside the cone, the tip cone is abutted against the cone under the action of a spring, the tip cone is connected to one end of the transverse valve rod 8, and the other end of the transverse valve rod 8 penetrates through the valve hole to be connected with the plug; in a normal pressure gas supply state, the tip of the cone is opposite to the cone top of the tip cone, the upper part of the vertical valve rod 2 is provided with an annular step, an annular sealing ring 9 is sleeved on the step, the end cap 7 is connected to the end part of the vertical valve rod 2 in a vertically adjustable mode through a bolt 71, the end part of the end cap 7 abuts against the magnetic ring 5, and the magnetic ring 5 is in contact with the sealing ring 9.
One or more washers 30 are also arranged between the end cap 7 and the magnetic ring 5. By adopting the structure, the adjusting space of the end cap 7 for the magnetic ring 5 can be further increased, the adjusting range of the magnetic ring 5 is further increased, and the adjustment to the numerical range of the self-closing pressure is ensured.
By adopting the technical scheme, the magnetic ring 5 can be compressed to the sealing ring 9 through the adjustment of the bolt 71, the thickness of the sealing ring 9 is changed, the distance between the magnetic ring 5 and the bottom of the guide sleeve 41 is further adjusted, the magnetic attraction force between the magnetic ring 5 and the bottom of the guide sleeve 41 is changed, namely, when the distance between the magnetic ring 5 and the bottom of the guide sleeve 41 is short, the magnetic attraction force is large, the pressure index of low-pressure self-closing is increased, when the distance between the magnetic ring 5 and the bottom of the guide sleeve 41 is long, the magnetic attraction force is small, the pressure index of low-pressure self-closing is reduced, the pressure can be easily adjusted to the set self-closing pressure value, and the qualification rate of products is greatly improved.
Claims (2)
1. A fuel gas self-closing valve with adjustable under-pressure self-closing pressure comprises a valve body, a vertical valve rod, a leather cup and a valve cover, wherein a valve cavity is arranged in the valve body, the valve cavity is provided with an upper opening, the upper opening is covered and sealed by the leather cup, the leather cup is fixed by the valve cover, one end of the valve body is provided with an air outlet, the other end of the valve body is provided with an air inlet, the air inlet is communicated with the valve cavity through the valve hole, the vertical valve rod can be movably arranged in the valve cavity up and down, the vertical valve rod is fixedly connected with the leather cup, the upper part of the vertical valve rod is sleeved with a slidable magnetic ring, the magnetic ring is movably arranged in a guide sleeve at the top of the valve cover, the upper end of the vertical valve rod is connected with an end cap, the part of the vertical valve rod, which is positioned in the valve cavity, is fixedly connected with a cone, the side of the cone is abutted against the cone under the action of a spring, the top cone is connected with one end of a transverse valve rod, and the other end of the transverse valve rod penetrates through the valve hole to be connected with an end cap; at normal pressure air feed state, the apex of the tip of cone and apex cone are just right, its characterized in that: the upper part of the vertical valve rod is provided with an annular step, an annular sealing ring is sleeved on the step, the end cap is connected to the end part of the vertical valve rod in a vertically adjustable manner through a bolt, the end part of the end cap abuts against the magnetic ring, and the magnetic ring is in contact with the sealing ring.
2. The gas self-closing valve with the adjustable under-pressure self-closing pressure as claimed in claim 1, characterized in that: one or more gaskets are also disposed between the end cap and the magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412050.2U CN217003253U (en) | 2021-06-24 | 2021-06-24 | Gas self-closing valve with adjustable under-pressure self-closing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412050.2U CN217003253U (en) | 2021-06-24 | 2021-06-24 | Gas self-closing valve with adjustable under-pressure self-closing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217003253U true CN217003253U (en) | 2022-07-19 |
Family
ID=82365920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121412050.2U Active CN217003253U (en) | 2021-06-24 | 2021-06-24 | Gas self-closing valve with adjustable under-pressure self-closing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217003253U (en) |
-
2021
- 2021-06-24 CN CN202121412050.2U patent/CN217003253U/en active Active
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