CN216279613U - Pressure reducing valve capable of preventing leakage at adjusting bolt - Google Patents
Pressure reducing valve capable of preventing leakage at adjusting bolt Download PDFInfo
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- CN216279613U CN216279613U CN202122766704.8U CN202122766704U CN216279613U CN 216279613 U CN216279613 U CN 216279613U CN 202122766704 U CN202122766704 U CN 202122766704U CN 216279613 U CN216279613 U CN 216279613U
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- adjusting bolt
- spring plate
- pressure regulating
- valve
- pressure
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Abstract
The utility model discloses a pressure reducing valve capable of preventing leakage at an adjusting bolt, which structurally comprises a valve body, a valve core assembly, a valve cover, a pressure regulating cavity, a diaphragm, a spring plate, an adjusting bolt, a pressure regulating spring and the like. Meanwhile, a vertical circumferential wall which is convenient for the spring plate to be in dynamic sealing contact is arranged in the pressure regulating cavity, and a sealing ring which is convenient for contact sealing is also arranged on the outer circumference of the spring plate, so that the pressure regulating cavity forms an independent closed cavity; therefore, once the diaphragm is broken due to the influence of reasons such as overhigh pressure or medium and the like in the using process, even if the medium enters the pressure regulating cavity, the medium cannot leak from the regulating bolt, the pressure inside the pressure reducing valve and the normal work are ensured, and the functional failure is prevented.
Description
Technical Field
The utility model relates to a pressure reducing valve in a pipeline valve, in particular to a pressure reducing valve capable of preventing leakage at an adjusting bolt.
Background
At present, most pressure reducing valves are composed of a valve body, a valve cover arranged on the top of the valve body, an adjusting bolt movably arranged on the top of the valve cover in a lifting manner, a diaphragm arranged between the valve body and the valve cover, and the like, wherein the diaphragm divides a valve core cavity in the valve body and a pressure regulating cavity in the valve cover, a valve core assembly is arranged in the valve core cavity, the top of the valve core assembly is connected with the diaphragm through a diaphragm pressing plate, the lower end of the adjusting bolt penetrates through the pressure regulating cavity to be provided with a spring plate, a pressure regulating spring is arranged in the pressure regulating cavity, and two ends of the pressure regulating spring elastically push against the spring plate and the diaphragm pressing plate respectively; obviously, as can be seen from the above description of the structure, the sealing between the valve body and the valve cover is mainly achieved by means of the diaphragm. However, since the diaphragm is easily affected by the material and shape of the diaphragm, in the actual use process, when the diaphragm is affected by too high pressure or medium, the diaphragm is often broken, so that the sealing failure between the valve cover and the valve body is caused; thus, the medium enters the pressure regulating chamber and leaks from the adjusting bolt, resulting in a functional failure of the pressure reducing valve itself and requiring replacement of parts.
Disclosure of Invention
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pressure reducing valve which can effectively prevent a medium from leaking from an adjusting bolt and ensure normal operation under the condition that a diaphragm is broken.
The technical problem of the utility model is realized by the following technical scheme:
a pressure reducing valve capable of preventing leakage at an adjusting bolt comprises a valve body, a valve cover arranged at the top of the valve body, an adjusting bolt movably arranged at the top of the valve cover in a lifting mode, and a diaphragm arranged between the valve body and the valve cover, wherein the diaphragm divides the interior of the valve body into a valve core cavity and the interior of the valve cover into a pressure regulating cavity; a valve core assembly is arranged in the valve core cavity, and the top of the valve core assembly is connected with the diaphragm through a diaphragm pressing plate; the lower end of the adjusting bolt penetrates through the pressure regulating cavity to install a spring plate; the pressure regulating cavity is internally provided with a pressure regulating spring, two ends of the pressure regulating spring are respectively and elastically pushed on the spring plate and the diaphragm pressing plate, and the lifting movement of the regulating bolt and the elastic pushing of the pressure regulating spring relatively act on the spring plate and drive the spring plate to form dynamic sealing lifting movement in the pressure regulating cavity.
The pressure regulating cavity is internally provided with a vertical circumferential wall, the spring plate is lifted and lowered in the pressure regulating cavity, and the outer circumference of the spring plate and the vertical circumferential wall form circumferential dynamic sealing contact.
The outer circumference of the spring plate is provided with a sealing ring, and the spring plate forms circumferential dynamic sealing contact with the vertical circumferential wall through the sealing ring of the outer circumference.
And the outer circumference of the spring plate is provided with a ring groove for the sealing ring to be embedded and fixed.
The top surface of the spring plate is provided with a mounting groove for assembling the lower end of the adjusting bolt.
The bottom surface of the spring plate is provided with a spring groove for assembling the end part of the pressure regulating spring.
The adjusting bolt is in threaded rotary connection with the top of the valve cover, the adjusting bolt converts rotary motion into lifting motion at the top of the valve cover, and a locking nut is arranged on the adjusting bolt.
Adjusting bolt, spring plate and pressure regulating spring all install on same axis.
Compared with the prior art, the utility model mainly designs the spring plate which is movably arranged in the pressure regulating cavity into a structure which forms dynamic seal contact with the pressure regulating cavity, namely the lifting movement of the regulating bolt and the elastic pushing of the pressure regulating spring relatively act on the spring plate and drive the spring plate to form the dynamic seal lifting movement in the pressure regulating cavity. Meanwhile, the pressure regulating cavity is also internally provided with a vertical circumferential wall which is convenient for the spring plate to be in dynamic sealing contact, and the outer circumference of the spring plate is also provided with a sealing ring which is convenient for contact sealing, so that the whole pressure regulating cavity forms an independent closed cavity; therefore, once the diaphragm is broken due to the influence of overhigh pressure or medium in the actual use process, the medium cannot leak from the adjusting bolt even if entering the pressure regulating cavity, so that the pressure in the pressure reducing valve is ensured to normally work, and functional failure cannot occur.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is an exploded perspective view of fig. 1.
Fig. 3 is a structural schematic diagram of the valve cover.
Fig. 4 is a schematic structural view of a spring plate.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the above drawings.
As shown in fig. 1-4, 1, 11, a valve core cavity, 2, a diaphragm, 3, a pressure regulating spring, 4, a valve cover, 41, a pressure regulating cavity, 42, a bolt hole, 43, a vertical circumferential wall, 5, a seal ring, 6, an adjusting bolt, 7, a locking nut, 8, a spring plate, 81, an installation groove, 82, a ring groove, 83, a spring groove, 9, a valve core assembly, and 10, a diaphragm pressing plate.
A pressure reducing valve capable of preventing leakage at an adjusting bolt is disclosed, as shown in figures 1 and 2, and relates to a pipeline valve capable of reducing inlet pressure to a certain required outlet pressure through adjustment and automatically keeping the outlet pressure stable by means of energy of a medium, and the structure of the pipeline valve mainly comprises a valve body 1, a valve cover 4 arranged at the top of the valve body, an adjusting bolt 6 movably arranged at the top of the valve cover in a lifting mode, a diaphragm 2 arranged between the valve body 1 and the valve cover 4 and the like.
Wherein, can separate the pressure regulating chamber 41 in case chamber 11 and the valve gap 4 through the diaphragm 2 with the valve body 1, and case chamber 11 and the pressure regulating chamber 41 independently set up each other and do not communicate, be equipped with diaphragm clamp plate 10 in diaphragm 2 center department, and install case subassembly 9 in the case chamber 41, the top of this case subassembly forms with diaphragm 2 through diaphragm clamp plate 10 and is connected.
The adjusting bolt 6 is installed in the bolt hole 42 at the top of the valve cover 4 in a threaded rotary connection mode, so that the adjusting bolt 6 can convert rotary motion into lifting motion at the top of the valve cover 4, the adjusting bolt 6 is further provided with a locking nut 7 which can be used for locking the lifting motion of the adjusting bolt 6, and the lower end of the adjusting bolt 6 penetrates into the pressure regulating cavity 41 and is provided with a spring plate 8.
The pressure regulating cavity 41 is internally provided with a pressure regulating spring 3, two ends of the pressure regulating spring are respectively and elastically pushed on the spring plate 8 and the diaphragm pressing plate 10, and the end part of the pressure regulating spring 3 on the diaphragm pressing plate is also fixedly connected; therefore, the lifting movement of the adjusting bolt 6 and the elastic pushing of the pressure regulating spring 3 just act on the spring plate 8 relatively, so that the spring plate 8 can be driven to form the lifting movement in the pressure regulating cavity 41.
Specifically, when the adjusting bolt 6 is operated to descend, the spring plate 8 is pushed to overcome the elastic force of the adjusting spring 3 to descend synchronously, and when the adjusting bolt 6 is operated to ascend, the adjusting spring 3 can push the spring plate 8 to ascend synchronously through the released elastic force until the adjusting bolt 6 stops ascending.
Meanwhile, the spring plate 8 can form a dynamic seal lifting movement in the pressure regulating cavity 41, specifically, a vertical circumferential wall 43 is arranged in the pressure regulating cavity 41, for example, in the embodiment, the vertical circumferential wall 43 in the pressure regulating cavity 41 is cylindrical, the spring plate 8 is a circular sheet part matched with the vertical circumferential wall 43, an annular groove 82 is arranged on the outer circumference of the spring plate, and a seal ring 5 can be embedded and fixed in the annular groove; thus, the spring plate 8 can be in circumferential movable sealing contact with the vertical circumferential wall 43 of the pressure regulating chamber 41 via the outer circumferential sealing ring 5 during the lifting movement.
Moreover, the spring plate 8 is mainly formed by hot forging and machining, the center of the circle of the top surface of the spring plate is provided with a mounting groove 81 for assembling the lower end of the adjusting bolt 6 so as to ensure that the spring plate 8 can synchronously descend along with the adjusting bolt 6, the bottom surface of the spring plate 8 is provided with a spring groove 83 for assembling the end part of the pressure regulating spring 3, the spring groove is an annular groove with the same center of the circle as the mounting groove 81, can be used for positioning the pressure regulating spring 3 and ensures that the spring plate 8 can synchronously ascend along with the elastic pushing of the pressure regulating spring 3; thus, the installed adjusting bolt 6, the spring plate 8 and the pressure regulating spring 3 are just positioned on the same axis.
In conclusion, under the common cooperation of the adjusting bolt 6, the spring plate 8, the pressure regulating spring 3 and the valve core assembly 9, the pressure reducing valve can form a pressure regulating structure from top to bottom, and the normal pressure regulating function can be realized by controlling the adjusting bolt 6.
The utility model mainly designs the spring plate 8 which is movably arranged in the pressure regulating cavity 41 in a lifting way into a structure which forms dynamic sealing contact with the pressure regulating cavity, the pressure regulating cavity 41 is also internally provided with a vertical circumferential wall 43 which is convenient for the spring plate 8 to make dynamic sealing contact, and the outer circumference of the spring plate 8 is also provided with a sealing ring 5 which is convenient for contact sealing, so that the whole pressure regulating cavity 41 forms an independent closed cavity; therefore, when the spring plate 8 is lifted, the contact between the spring plate and the spring plate can be better ensured to be always in a sealing state.
Therefore, once the diaphragm 2 is broken due to the influence of over-high pressure or medium itself in the actual use process, even if the medium enters the pressure regulating cavity 41, the medium cannot leak from the regulating bolt 6, so that the pressure in the pressure reducing valve is ensured to normally work, functional failure cannot occur, and a double-sealing leakage-proof structure is formed.
The above description is only a specific embodiment of the present invention, and those skilled in the art should understand that any similar structural design to the embodiment is included in the protection scope of the present invention.
Claims (8)
1. A pressure reducing valve capable of preventing leakage at an adjusting bolt comprises a valve body (1), a valve cover (4) arranged at the top of the valve body, an adjusting bolt (6) movably arranged at the top of the valve cover in a lifting mode, and a diaphragm (2) arranged between the valve body (1) and the valve cover (4), wherein the diaphragm separates a valve core cavity (11) in the valve body (1) and a pressure regulating cavity (41) in the valve cover (4); a valve core assembly (9) is arranged in the valve core cavity (11), and the top of the valve core assembly is connected with the diaphragm (2) through a diaphragm pressing plate (10); the lower end of the adjusting bolt (6) penetrates into the pressure regulating cavity (41) to install a spring plate (8); the pressure regulating device is characterized in that the lifting movement of the regulating bolt (6) and the elastic pushing of the pressure regulating spring (3) act on the spring plate (8) relatively, and the spring plate (8) is driven to form dynamic sealing lifting movement in the pressure regulating cavity (41).
2. The pressure reducing valve capable of preventing leakage at the adjusting bolt as claimed in claim 1, wherein a vertical circumferential wall (43) is provided in the pressure regulating chamber (41), the spring plate (8) is movable up and down in the pressure regulating chamber (41), and the outer circumference of the spring plate (8) and the vertical circumferential wall (43) form a circumferential movable sealing contact.
3. A pressure reducing valve preventing leakage at the adjusting bolt according to claim 2, characterized in that the outer circumference of the spring plate (8) is provided with a sealing ring (5), and the spring plate (8) forms a circumferential movable sealing contact with the vertical circumferential wall (43) via the sealing ring (5) of the outer circumference.
4. A pressure reducing valve for preventing leakage at an adjusting bolt according to claim 3, wherein the outer circumference of the spring plate (8) is provided with a ring groove (82) for fitting and fixing the seal ring (5).
5. A pressure reducing valve preventing leakage at an adjusting bolt as claimed in claim 1, wherein the top surface of said spring plate (8) is provided with a mounting groove (81) for fitting the lower end of said adjusting bolt (6).
6. A pressure reducing valve preventing leakage at an adjusting bolt as claimed in claim 1, wherein said spring plate (8) is provided at its bottom surface with a spring groove (83) for fitting an end portion of said pressure adjusting spring (3).
7. A pressure reducing valve preventing leakage at the adjusting bolt according to claim 1, wherein the adjusting bolt (6) is rotatably screwed on the top of the valve cover (4), and the adjusting bolt (6) converts the rotating motion into a lifting motion at the top of the valve cover (4), and a locking nut (7) is provided on the adjusting bolt (6).
8. The pressure reducing valve capable of preventing leakage at the position of the adjusting bolt according to claim 1, wherein the adjusting bolt (6), the spring plate (8) and the pressure regulating spring (3) are all installed on the same axial line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122766704.8U CN216279613U (en) | 2021-11-12 | 2021-11-12 | Pressure reducing valve capable of preventing leakage at adjusting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122766704.8U CN216279613U (en) | 2021-11-12 | 2021-11-12 | Pressure reducing valve capable of preventing leakage at adjusting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216279613U true CN216279613U (en) | 2022-04-12 |
Family
ID=81006795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122766704.8U Active CN216279613U (en) | 2021-11-12 | 2021-11-12 | Pressure reducing valve capable of preventing leakage at adjusting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216279613U (en) |
-
2021
- 2021-11-12 CN CN202122766704.8U patent/CN216279613U/en active Active
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