CN219345499U - Novel seal structure relief pressure valve - Google Patents
Novel seal structure relief pressure valve Download PDFInfo
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- CN219345499U CN219345499U CN202222568730.4U CN202222568730U CN219345499U CN 219345499 U CN219345499 U CN 219345499U CN 202222568730 U CN202222568730 U CN 202222568730U CN 219345499 U CN219345499 U CN 219345499U
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Abstract
The utility model discloses a novel pressure reducing valve with a sealing structure, wherein an inlet baffle is arranged at one side of an inner cavity of a valve body, which is close to an inlet, and a rotary cavity is arranged at one side of the inner cavity of the valve body, which is close to a water outlet; the piston part is movably and hermetically connected with the valve body, the adjusting spring is arranged on the piston part, an adjusting nut is arranged between the adjusting spring and the upper valve cover, and the adjusting nut is in threaded connection with the upper valve cover; the valve core is connected with a valve core cover in a threaded manner, and a reset spring is arranged between the valve core cover and the lower valve cover; the valve core cover is provided with a valve core cover sealing groove, a valve core cover sealing ring is arranged in the valve core cover sealing groove, and the valve core cover sealing ring is aligned with the inlet baffle; the valve core cover sealing groove is of a trapezoid structure with a large slot bottom, and the valve core cover sealing ring is of a structure matched with the valve core cover sealing groove; the upper valve cover is provided with a dust cover, and a dust seal ring is arranged between the dust cover and the upper valve cover. By the design, the tightness of the pressure reducing valve can be effectively improved.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a novel pressure reducing valve with a sealing structure.
Background
The pressure reducing valve is a special pressure regulating device for reducing the medium pressure of the pipeline behind the valve by regulating the pressure of a spring, and can reduce the higher medium pressure of the pipeline in front of the valve to the pressure level required by the pipeline behind the valve. The transmission medium here is mainly water, gas, oil, etc. The pressure reducing valve is mainly used for secondary water supply, heat supply, mines and other occasions of high-rise buildings so as to ensure that proper pressure and flow are obtained for various use points in the system.
However, the branch pipe pressure reducing valve in the prior art is easy to cause leakage of the medium to the outside of the valve due to long-term use of the piston sealing ring and leakage of the medium to the inside of the valve cover cavity due to the use property and the structural characteristics of the branch pipe pressure reducing valve. In severe cases, a large amount of leakage may occur, flooding the equipment or materials surrounding the valve, and possibly causing serious economic loss.
Disclosure of Invention
The utility model aims to provide a novel pressure reducing valve with a sealing structure, which solves the problems that a piston sealing ring is easy to leak into a valve cover cavity and then leak out of the valve to form medium leakage due to long-term use due to the use property and the structural characteristics of a branch pipe pressure reducing valve in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the novel pressure reducing valve with the sealing structure comprises a valve body, wherein two sides of the valve body are respectively in threaded connection with an upper valve cover and a lower valve cover, and the other two sides of the valve body are respectively provided with an inlet and an outlet; a valve core component is arranged in the cavity inside the valve body;
the valve core assembly comprises a piston part, a valve core part, an adjusting spring and a return spring; an inlet baffle is arranged on one side of the inner cavity of the valve body, which is close to the inlet, and a rotary cavity is arranged on one side of the inner cavity of the valve body, which is close to the water outlet;
the piston part is movably and hermetically connected with the valve body, the adjusting spring is arranged on the piston part, an adjusting nut is arranged between the adjusting spring and the upper valve cover, and the adjusting nut is in threaded connection with the upper valve cover; the valve core is in threaded connection with a valve core cover, the valve core cover is positioned between the inlet baffle and the lower valve cover, and the reset spring is arranged between the valve core cover and the lower valve cover;
the valve core cover is provided with a valve core cover sealing groove, a valve core cover sealing ring is arranged in the valve core cover sealing groove, and the valve core cover sealing ring is aligned with the inlet baffle; the valve core cover sealing groove is of a trapezoid structure with a large slot bottom, and the valve core cover sealing ring is of a structure matched with the valve core cover sealing groove; the upper valve cover is provided with a dust cover, and a dust seal ring is arranged between the dust cover and the upper valve cover.
Further, the inlet is provided with a connecting part, and the connecting part is provided with a pressure detection device.
Further, an upper valve cover sealing ring is arranged between the upper valve cover and the valve body; a lower valve cover sealing ring is arranged between the lower valve cover and the lower valve body.
Further, a circle of piston sealing groove is arranged in the circumferential direction of the piston part, and a piston sealing ring is arranged in the piston sealing groove.
Further, a filter screen is arranged on the outer side of the valve core part, and a filter net card is connected between the piston part and the valve core cover.
Further, a valve core sealing groove is arranged in the circumferential direction of the valve core part, and a valve core sealing ring is arranged in the valve core sealing groove.
Further, the bottom of the valve core is provided with a connecting rod, and the valve core cover is in threaded connection with the connecting cover.
Compared with the prior art, the utility model has the following beneficial effects:
the valve core cover sealing groove is of a trapezoid structure with a large slot bottom, and the valve core cover sealing ring is of a structure matched with the valve core cover sealing groove; the valve core cover sealing ring with the structure is not easy to deform after being pressed, and the situation that the valve core cover sealing ring is difficult to tilt after being pressed is difficult to occur, so that sealing is effectively ensured, and medium overflow is prevented.
The design of shield makes the shield inside form a sealed space, can prevent on the one hand that external impurity from entering into the inside interior hexagonal jam that causes adjusting nut of upper valve gap, and the other party also can prevent that the medium from spilling over outside the relief pressure valve from upper valve gap.
The pressure of the medium is reduced through blocking the medium by the inlet baffle, and meanwhile, partial medium can be decompressed through backflushing of the medium by the rotary cavity through the design of the rotary cavity, so that the decompression effect is further improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a partially enlarged schematic view at a of fig. 1.
The marks in the figure: the valve comprises a valve body, a lower valve cover sealing ring, a lower valve cover 3, a return spring 4, a valve core cover 5, an outlet 6, a connecting rod 7, a valve core 8, a valve core 9, a piston 10, a piston 11, a piston 12, an upper valve cover 13, an upper valve cover 14, a regulating spring 15, a regulating nut 16, a dust cover 17, a dust seal 18, a pressure detecting device 19, a filter screen 20, an inlet baffle 21, a valve core cover 22 and a rotary cavity 23.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
The novel pressure reducing valve with the sealing structure comprises a valve body 1, wherein two sides of the valve body 1 are respectively in threaded connection with an upper valve cover 13 and a lower valve cover 3, and the other two sides of the valve body 1 are respectively provided with an inlet 21 and an outlet 6; a valve core component is arranged in the cavity inside the valve body 1;
the valve core assembly comprises a piston part 11, a valve core part 9, an adjusting spring 14 and a return spring 4; an inlet baffle 20 is arranged on one side of the inner cavity of the valve body 1, which is close to the inlet 21, and a rotary cavity 23 is arranged on one side of the inner cavity of the valve body 1, which is close to the water outlet;
the piston part 11 is movably and hermetically connected with the valve body 1, the adjusting spring 14 is arranged on the piston part 11, an adjusting nut 15 is arranged between the adjusting spring 14 and the upper valve cover 13, the adjusting nut 15 is an inner hexagonal nut, and the adjusting nut 15 is in threaded connection with the upper valve cover 13; the valve core 9 is in threaded connection with the valve core cover 5, the valve core cover 5 is positioned between the inlet baffle 20 and the lower valve cover 3, and the return spring 4 is arranged between the valve core cover 5 and the lower valve cover 3;
the valve core cover 5 is provided with a valve core cover sealing groove, a valve core cover sealing ring 22 is arranged in the valve core cover sealing groove, and the valve core cover sealing ring 22 is aligned with the inlet baffle 20; the valve core cover sealing groove is of a trapezoid structure with a large slot bottom, and the valve core cover sealing ring 22 is of a structure matched with the valve core cover sealing groove (see fig. 1 and 2); the valve core cover sealing ring 22 with the small upper part and the large lower part is not easy to deform after being pressed, and the situation that the valve core cover sealing ring 22 is tilted after being pressed is difficult to occur, thereby effectively ensuring the sealing and preventing the medium from overflowing. The upper valve cover 13 is provided with a dust cover 16, and a dust seal ring 17 is arranged between the dust cover 16 and the upper valve cover 13. The design of the dust cover 16 makes the inside of the dust cover 16 form a sealed space, on one hand, the inner hexagon of the adjusting nut 15 is blocked because external impurities (such as dust) enter the upper valve cover 13, and on the other hand, the medium can be prevented from overflowing from the upper valve cover 13 to the outside of the pressure reducing valve. Here, the sealing ring 22 of the valve core cover and the sealing ring of the dust cover 16 are made of rubber materials.
In actual use, when the pressure reducing valve is closed, the valve core 9 is in contact and sealed with the inlet baffle 20 and the cavity wall of the rotary cavity 23 to achieve interception. The specific operation of opening the pressure reducing valve for reducing the pressure of the medium passing through the pressure reducing valve is to rotate the adjusting nut 15 to separate the valve core part 9 from the inlet baffle 20 and the cavity wall of the rotary cavity 23 while changing the pretightening force of the adjusting spring 14, and it should be noted that the stiffness of the adjusting spring 14 should be larger than the stiffness of the return spring 4, so that the adjusting nut 15 can press the adjusting spring 14 and separate the valve core part 9 from the inlet baffle 20 and the cavity wall of the rotary cavity 23 to realize medium circulation. The pressure of the medium is reduced by blocking the medium by the inlet baffle 20, and meanwhile, partial medium can be decompressed by backflushing the medium by the rotary cavity 23 due to the design of the rotary cavity 23, so that the decompression effect is further improved.
When the pressure of the medium changes, and when the pressure of the medium is smaller than the pretightening force of the regulating spring 14, the medium is depressurized by the inlet baffle 20 and the rotary cavity 23 and then flows out of the outlet 6; when the pressure of the medium is larger than the pretightening force of the regulating spring 14, the piston part 11 is pressed to move and drives the valve core part 9 to move, the gap between the valve core part 9 and the inlet baffle 20 is reduced, the resistance of the medium is increased, and the medium with high pressure is subjected to stronger decompression effect, so that the pressure of the medium at the outlet 6 is consistent.
In a preferred embodiment, the inlet 21 is provided with a connection part, and the connection part is provided with a pressure detection device 18, and the pressure detection device 18 can detect the medium pressure at the inlet 21, so that the pretightening force of the adjusting spring 14 can be changed conveniently by staff according to actual conditions. It should be noted that the outlet 6 is additionally provided with an outlet 6 pressure detector for detecting whether the pressure of the outlet 6 is consistent, and the pressure detecting device 18 is used for facilitating the adjustment of the pressure reducing valve by a worker according to actual conditions. The pressure detecting device 18 in this embodiment employs a pressure gauge.
In a preferred embodiment, an upper bonnet seal 12 is provided between the upper bonnet 13 and the valve body 1; a lower valve cover sealing ring 2 is arranged between the lower valve cover 3 and the lower valve body 1. The upper valve cover sealing ring 12 and the lower valve cover sealing ring 2 can effectively ensure the tightness between the upper valve cover 13 and the lower valve cover 3 and the valve body 1. Here, the upper bonnet seal ring 12 and the lower bonnet seal ring 2 are made of rubber materials.
In a preferred embodiment, a ring of piston seal grooves is provided in the circumferential direction of the piston portion 11, and a piston seal ring 10 is provided in the piston seal groove. The piston seal 10 prevents medium flowing through the valve body 1 from escaping from the gap between the piston and the valve body 1. Here, the piston seal 10 is made of a rubber material.
In a preferred embodiment, a filter screen 19 is arranged on the outer side of the valve core part 9, and the filter screen 19 is clamped between the piston part 11 and the valve core cover 5. The filter screen 19 can filter impurities in the medium, and at the same time, the filter screen 19 can also increase resistance, and can further increase the decompression effect.
In a preferred embodiment, a spool sealing groove is provided in the circumferential direction of the spool part 9, and a spool sealing ring 8 is provided in the spool sealing groove. The valve core sealing ring 8 can effectively prevent the medium from overflowing from the gap between the valve core and the valve body 1 and the inlet baffle 20. Here, it should be noted that the valve core sealing ring 8 is made of rubber material.
In a preferred embodiment, the bottom of the valve core is provided with a connecting rod 7, and the valve core cover 5 is in threaded connection with the connecting cover. In this way, the valve core cover 5 can be easily detached.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The novel pressure reducing valve with the sealing structure comprises a valve body (1), wherein two sides of the valve body (1) are respectively connected with an upper valve cover (13) and a lower valve cover (3) in a threaded manner, and the other two sides of the valve body (1) are respectively provided with an inlet (21) and an outlet (6); a valve core component is arranged in the cavity inside the valve body (1); the method is characterized in that:
the valve core assembly comprises a piston part (11), a valve core part (9), an adjusting spring (14) and a return spring (4); an inlet baffle (20) is arranged at one side of the inner cavity of the valve body (1) close to the inlet (21), and a rotary cavity (23) is arranged at one side of the inner cavity of the valve body (1) close to the water outlet;
the piston part (11) is movably and hermetically connected with the valve body (1), the adjusting spring (14) is arranged on the piston part (11), an adjusting nut (15) is arranged between the adjusting spring (14) and the upper valve cover (13), and the adjusting nut (15) is in threaded connection in the upper valve cover (13); the valve core (9) is in threaded connection with the valve core cover (5), the valve core cover (5) is positioned between the inlet baffle (20) and the lower valve cover (3), and the return spring (4) is arranged between the valve core cover (5) and the lower valve cover (3);
a valve core cover sealing groove is formed in the valve core cover (5), a valve core cover sealing ring (22) is arranged in the valve core cover sealing groove, and the valve core cover sealing ring (22) is aligned with the inlet baffle plate (20); the valve core cover sealing groove is of a trapezoid structure with a large slot bottom, and the valve core cover sealing ring (22) is of a structure matched with the valve core cover sealing groove; a dust cover (16) is arranged on the upper valve cover (13), and a dust seal ring (17) is arranged between the dust cover (16) and the upper valve cover (13).
2. The novel sealing structure pressure reducing valve according to claim 1, wherein: the inlet (21) is provided with a connecting part, and the connecting part is provided with a pressure detection device (18).
3. The novel sealing structure pressure reducing valve according to claim 1, wherein: an upper valve cover sealing ring (12) is arranged between the upper valve cover (13) and the valve body (1); a lower valve cover sealing ring (2) is arranged between the lower valve cover (3) and the lower valve body (1).
4. The novel sealing structure pressure reducing valve according to claim 1, wherein: a circle of piston sealing groove is arranged in the circumferential direction of the piston part (11), and a piston sealing ring (10) is arranged in the piston sealing groove.
5. The novel sealing structure pressure reducing valve according to claim 1, wherein: a filter screen (19) is arranged on the outer side of the valve core part (9), and the filter screen (19) is clamped between the piston part (11) and the valve core cover (5).
6. The novel sealing structure pressure reducing valve according to claim 1, wherein: a valve core sealing groove is arranged in the circumferential direction of the valve core (9), and a valve core sealing ring (8) is arranged in the valve core sealing groove.
7. The novel sealing structure pressure reducing valve according to claim 1, wherein: the bottom of the valve core is provided with a connecting rod (7), and the valve core cover (5) is in threaded connection with the connecting cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222568730.4U CN219345499U (en) | 2022-09-28 | 2022-09-28 | Novel seal structure relief pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222568730.4U CN219345499U (en) | 2022-09-28 | 2022-09-28 | Novel seal structure relief pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219345499U true CN219345499U (en) | 2023-07-14 |
Family
ID=87075685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222568730.4U Active CN219345499U (en) | 2022-09-28 | 2022-09-28 | Novel seal structure relief pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219345499U (en) |
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2022
- 2022-09-28 CN CN202222568730.4U patent/CN219345499U/en active Active
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