CN216743003U - High-pressure check valve - Google Patents
High-pressure check valve Download PDFInfo
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- CN216743003U CN216743003U CN202123408154.9U CN202123408154U CN216743003U CN 216743003 U CN216743003 U CN 216743003U CN 202123408154 U CN202123408154 U CN 202123408154U CN 216743003 U CN216743003 U CN 216743003U
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Abstract
The utility model relates to the technical field of marine high-pressure piping system devices, in particular to a high-pressure check valve. The present invention relates to a high pressure check valve comprising: the valve comprises a valve body, a valve cover, a return spring and a valve disc assembly, wherein the valve body is hollow, an external thread is arranged on the outer wall of one end of the valve body, and an internal thread is arranged on the inner wall of the other end of the valve body; the valve cover is arranged in the valve body, and the interior of the valve cover is hollow; the valve disc assembly is arranged on the inner wall of the valve cover in a sliding manner, and one end of the valve disc assembly is abutted against the inner wall of the valve cover; the return spring is arranged on the inner wall of the valve cover and abuts against the valve disc assembly; when the front pressure of the valve disc assembly is smaller than the rear pressure of the valve disc assembly, the return spring can push the valve disc assembly to abut against the inner wall of the valve cover. The utility model has simple structure and simple operation, realizes multilayer sealing by arranging the slidable valve disc assembly in the valve cover, and improves the tightness of the check valve.
Description
Technical Field
The utility model relates to the technical field of marine high-pressure piping system devices, in particular to a high-pressure check valve.
Background
With the stricter requirements on the performance and the noise control of the valve for the underwater vehicle high-pressure piping system, the valve which is reliable in sealing and can reduce airflow noise has a very wide market prospect. In the high-pressure gas pipeline, the sealing surface processing requirement of the metal sealing valve is extremely high, and the sealing surface is easy to collide with and lose the sealing capability due to impurities in the gas in the use process. The processing requirement of the non-metal sealing valve sealing surface is not high, but the performance requirement of the non-metal material is high, and many non-metal sealing surfaces can not bear impact force caused by high pressure for a long time to generate plastic deformation or damage, thereby bringing great potential safety hazard to the whole system.
It is therefore desirable to develop a high pressure check valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-pressure check valve to solve the technical problem of poor sealing performance in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a high-pressure check valve, including:
the valve comprises a valve body, a valve cover, a return spring and a valve disc assembly, wherein the valve body is hollow, an external thread is arranged on the outer wall of one end of the valve body, and an internal thread is arranged on the inner wall of the other end of the valve body;
the valve cover is arranged in the valve body, and the interior of the valve cover is hollow; the valve disc assembly is slidably arranged on the inner wall of the valve cover, and one end of the valve disc assembly abuts against the inner wall of the valve cover; the return spring is arranged on the inner wall of the valve cover and abuts against the valve disc assembly; wherein
After fluid enters from the valve cover inlet, the valve disc assembly is pushed to be separated from the inner wall of the valve cover, and then the fluid flows out from the valve body outlet.
Preferably, a first through hole and a second through hole which are communicated with each other are formed in the valve cover, the inner diameter of the second through hole is larger than that of the first through hole, and the second through hole is formed in the outlet end of the valve cover;
a transition inclined plane is arranged at the intersection of the first through hole and the second through hole;
the valve disc assembly is arranged in the second through hole in a sliding mode, and the return spring can push the valve disc assembly to enable the end wall of the valve disc assembly to abut against the inner wall of the first through hole.
Preferably, the valve disc assembly comprises: the valve comprises a first valve disc, a second valve disc and a fixing column, wherein the fixing column is slidably arranged in the valve cover, the first valve disc is fixed at the end part of the fixing column, and the outer diameter of the first valve disc is larger than that of the fixing column;
the second valve disk is sleeved on the outer wall of the fixing column, the side wall of the second valve disk abuts against the side wall of the first valve disk, and the outer diameter of the second valve disk is larger than that of the first valve disk; wherein
When the pressure of the fluid in the first through hole is high, the fluid pushes the first valve disc to enable the end wall of the first valve disc to be separated from the inner wall of the first through hole;
when the pressure of fluid in the first through hole is small, the return spring pushes the second valve disc to abut against the transition inclined plane, and the second valve disc is continuously pushed to abut against the inner wall of the first through hole.
Preferably, the first valve disc is a metal valve disc; the second valve disc is a non-metallic valve disc.
Preferably, the valve disc assembly further comprises a locking piece, the locking piece is sleeved on the outer wall of the fixing column, and the locking piece fixes the second valve disc on the side wall of the first valve disc.
Preferably, a plurality of silencing holes are formed in the valve body, and are parallel to the central axis of the valve body at equal intervals;
preferably, a gasket is arranged in the valve body, the gasket is arranged on the inner wall of the valve body in a circular ring shape, and the end of the valve cover abuts against the gasket after the valve cover is inserted into the valve body.
Preferably, a sealing groove is further arranged in the valve body, and the sealing groove is formed along the radial direction of the inner wall of the valve body;
the sealing groove is internally fixed with a sealing ring, the sealing ring is O-shaped, the sealing ring protrudes out of the inner wall of the valve body, and when the valve cover is inserted into the valve body and is abutted against the gasket, the sealing ring is abutted against the outer wall of the valve cover.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects: a high pressure check valve comprising: the valve comprises a valve body, a valve cover, a return spring and a valve disc assembly, wherein the valve body is hollow, an external thread is arranged on the outer wall of one end of the valve body, and an internal thread is arranged on the inner wall of the other end of the valve body; the valve cover is arranged in the valve body, and the interior of the valve cover is hollow; the valve cover is internally provided with a valve disc assembly which is arranged on the inner wall of the valve cover in a sliding way, and one end of the valve disc assembly is abutted against the inner wall of the valve cover; the return spring is arranged on the inner wall of the valve cover and abuts against the valve disc assembly; when the front pressure of the valve disc assembly is smaller than the rear pressure of the valve disc assembly, the return spring can push the valve disc assembly to abut against the inner wall of the valve cover. The check valve is simple in structure and convenient to operate, multi-layer sealing is realized by arranging the slidable valve disc assembly in the valve cover, and the sealing performance of the check valve is improved; the silencing holes with a plurality of small holes are arranged in the valve body, so that the noise of the fluid when passing is reduced; the opening and closing pressure difference between the valve disc assembly and the return spring is small, and the precision of the check valve is improved.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 shows a longitudinal sectional view of a high pressure check valve of the present invention.
In the figure:
1. a valve body; 11. a sound-deadening hole; 12. a gasket; 13. a seal ring; 2. a valve cover; 21. a first through hole; 22. a second through hole; 23. a transition bevel; 3. a return spring; 4. a valve disc assembly; 41. a first valve disc; 42. a second valve disc; 43. fixing a column; 44. a locking tab.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
A high pressure check valve as shown in fig. 1, comprising: the valve comprises a valve body 1, a valve cover 2, a return spring 3 and a valve disc assembly 4, wherein the valve body 1 is hollow, and the interior of the valve body 1 is hollow and is suitable for fluid to pass through; the outer wall of one end of the valve body 1 is provided with an external thread, and the outer wall of one end of the valve body 1 is provided with an external thread suitable for fixedly connecting the valve body 1 with a system pipeline thread. The inner wall of the other end of the valve body 1 is provided with internal threads, the other end of the valve body 1 is provided with the internal threads, so that the valve cover 2 can be fixed on the inner wall of the valve body 1 in a threaded manner, meanwhile, the inner wall of the valve body 1 is provided with a guide and support structure of the valve cover 2, and the valve cover 2 is more firmly fixed with the valve body 1 through the guide and support structure after being inserted into the valve body 1; the valve cover 2 is arranged in the valve body 1, and the interior of the valve cover 2 is hollow; the valve cover 2 is hollow inside, the hollow part of the valve cover 2 is communicated with the hollow part of the valve body 1, and after fluid enters through the inlet of the valve cover 2, the fluid can flow out from the outlet of the valve body 1 after pushing the valve disc assembly 4. The valve disc assembly 4 is slidably arranged on the inner wall of the valve cover 2, and one end of the valve disc assembly 4 abuts against the inner wall of the valve cover 2; the return spring 3 is arranged on the inner wall of the valve cover 2, and the return spring 3 abuts against the valve disc assembly 4; when the front pressure of the valve disc assembly 4 is smaller than the rear pressure of the valve disc assembly 4, the return spring 3 can push the valve disc assembly 4 to abut against the inner wall of the valve cover 2. Valve disc assembly 4 is double-deck seal structure, and when valve gap 2's inlet pressure was less than outlet pressure, when valve disc assembly 4's preceding pressure was less than valve back pressure a little promptly, return spring 3 can push away valve disc assembly 4 moved to valve disc assembly 4 and valve gap 2's inner wall to valve gap 2's import direction and offsets to realize sealed effect, and valve disc assembly 4 of dual design has further improved sealed effect, has guaranteed the leakproofness of non return, and the utility model discloses a valve disc assembly 4 opens and close pressure differential little, under return spring 3 and dual valve disc assembly 4's interact, opens and close pressure differential and is less than or equal to 0.1 MPa. The valve disc component 4 with double sealing functions is simple in structure and convenient to operate, the sealing performance is greatly improved by adopting a double sealing structure through the designed valve disc component 4 with double sealing functions, and meanwhile, the return spring 3 matched with the valve disc component can ensure that the valve disc component 4 can realize timely non-return under a small opening and closing pressure difference, so that the non-return sealing performance is further improved.
Optionally, a first through hole 21 and a second through hole 22 which are communicated with each other are formed in the valve cover 2, the inner diameter of the second through hole 22 is larger than that of the first through hole 21, and the second through hole 22 is arranged at the outlet end of the valve cover 2; first through-hole 21 and the coaxial setting of second through-hole 22, second through-hole 22 set up the exit end at valve gap 2, and rivers get into in the less first through-hole 21 of internal diameter like this, flow to the great second through-hole 22 of internal diameter in back, and water velocity slows down, can reduce the noise of rivers in passing through valve gap 2 like this. A transition inclined surface 23 is arranged at the intersection of the first through hole 21 and the second through hole 22; the valve disc assembly 4 is slidably disposed in the second through hole 22, and the return spring 3 can push the valve disc assembly 4 to make the end wall of the valve disc assembly 4 abut against the inner wall of the first through hole 21. One weight of the valve disc assembly 4 with double design is propped against the inner wall of the first through hole 21, and the other weight of the valve disc assembly 4 is propped against the transition inclined surface 23, so that the sealing performance of the valve disc assembly 4 can be further improved; the valve body 1 and the valve cover 2 are made of metal materials, preferably duplex stainless steel materials.
Optionally, the valve disc assembly 4 comprises: the valve comprises a first valve disc 41, a second valve disc 42 and a fixing column 43, wherein the first valve disc 41 and the fixing column 43 are made of metal materials, preferably duplex stainless steel materials. The second valve disc 42 is made of a flexible material, preferably a fluororubber material, the fixed column 43 is slidably disposed in the valve cover 2, the fixed column 43 can horizontally slide along the axis of the valve cover 2, the return spring 3 is disposed on the outer wall of the fixed column 43, one end of the return spring 3 abuts against the fixed column 43, the other end of the return spring 3 abuts against the inner wall of the valve body 1, and when the pressure in front of the valve is low, the return spring 3 can push the fixed column 43 to move towards the first through hole 21, so that the second valve disc 42 is driven to move towards the transition inclined surface 23 and abut against the transition inclined surface; when the pressure before the valve is higher, the return spring 3 continues to push the fixing column 43 to move towards the first through hole 21, so as to drive the first valve disc 41 to abut against the inner wall of the first through hole 21, thereby ensuring that water flow cannot flow back from the second through hole 22 into the first through hole 21, and improving the sealing performance of the valve disc assembly 4. The second valve disc 42 is made of a flexible material, the second valve disc 42 is preferentially contacted with the transition inclined surface 23 to play a role in buffering, impact force generated when the first valve disc 41 abuts against the inner wall of the first through hole 21 is reduced, and a damping and noise reducing effect is achieved; and as the pressure difference before the valve is increased, the first valve disc 41 can bear the extrusion force between the first valve disc and the valve cover 2, so that the extrusion force borne by the second valve disc 42 can be protected, and the service life of the second valve disc 42 is prolonged. The first valve disk 41 is fixed at the end of the fixed column 43, and the outer diameter of the first valve disk 41 is larger than that of the fixed column 43; the second valve disc 42 is sleeved on the outer wall of the fixing column 43, the side wall of the second valve disc 42 is abutted against the side wall of the first valve disc 41, and the outer diameter of the second valve disc 42 is larger than that of the first valve disc 41; due to the design, when the pressure in front of the valve changes slightly, the second valve disc 42 moves towards the transition inclined surface 23 and is abutted against the transition inclined surface, the effect of sealing the first through hole 21 and the second through hole 22 is achieved, meanwhile, the buffering effect is achieved, and the effects of shock absorption and noise reduction are achieved. When the pressure of the fluid in the first through hole 21 is high, the fluid pushes the first valve disc 41 to separate the end wall of the first valve disc 41 from the inner wall of the first through hole 21; when the pressure of the fluid in the first through hole 21 is small, the return spring 3 pushes the second valve disc 42 to abut against the transition inclined surface 23, and the second valve disc 42 is continuously pushed to push the first valve disc 41 to abut against the inner wall of the first through hole 21. The first valve disc 41 is a metal valve disc; the second valve disc 42 is a non-metallic valve disc. The valve disc assembly 4 is made of a metal material of the first valve disc 41 and a flexible material of the second valve disc 42, and the sealing performance of the check is ensured by adopting a soft sealing and hard sealing double-sealing structure. When the pressure before the valve is slightly lower than the pressure after the valve, the return spring 3 pushes the second valve disc 42 to move towards the transition inclined plane 23 and abut against the transition inclined plane, so that primary sealing is realized to prevent water flow from flowing backwards, and a non-return effect is realized; when the pressure difference between the pressure before the valve and the pressure after the valve is increased, the water flow after the valve can tightly press the second valve disc 42 on the valve cover 2, at the moment, the second valve disc 42 is abutted against the transition inclined surface 23, the first valve disc 41 is abutted against the inner wall of the first through hole 21, and the hard sealing and the soft sealing play a role at the same time, so that the water flow is ensured not to flow backwards into the first through hole 21.
Optionally, the valve disc assembly 4 further includes a locking plate 44, the locking plate 44 is sleeved on the outer wall of the fixing column 43, the locking plate 44 presses the second valve disc 42 from one side to fix the second valve disc 42 between the locking plate 44 and the side wall of the first valve disc 41, and the locking plate 44 fixes the second valve disc 42 on the side wall of the first valve disc 41, so that the fixing stability of the second valve disc 42 is improved. A plurality of silencing holes 11 are formed in the valve body 1, the silencing holes 11 are of a structure for silencing small holes, water flow is relieved after passing through the valve disc assembly 4, and when the relieved water flow passes through the silencing holes 11, noise caused by flow of the water flow can be reduced, the comfort of crew is improved, and meanwhile the stealth performance of the ship is also improved. The plurality of silencing holes 11 are parallel to the central axis of the valve body 1 at equal intervals, and the design that the plurality of silencing holes 11 are parallel to the central axis at equal intervals also reduces the resistance of water flow in the valve body 1. A gasket 12 is arranged in the valve body 1, and the gasket 12 is a metal gasket 12, preferably a red copper gasket 12. The gasket 12 is the ring form setting and is in 1 inner wall of valve body, valve gap 2 inserts the inside back of valve body 1, and 2 tip of valve gap offset with gasket 12, the film plays the effect of sealed 2 end walls of valve gap and 1 inner wall of valve body, has improved the leakproofness of valve gap 2 and valve body 1. The valve body 1 is also internally provided with a sealing groove which is radially arranged along the inner wall of the valve body 1; a sealing ring 13 is fixed in the sealing groove, the sealing ring 13 is made of flexible materials, preferably fluororubber materials, so that the service life of the equipment can be prolonged, and the sealing groove is suitable for marine environments. The sealing ring 13 is O-shaped, the sealing ring 13 protrudes out of the inner wall of the valve body 1, and when the valve cover 2 is inserted into the valve body 1 and abuts against the gasket 12, the sealing ring 13 abuts against the outer wall of the valve cover 2. The sealing ring 13 is matched with the gasket 12, the gasket 12 improves the contact area between the valve cover 2 and the inner wall of the valve body 1 from the end part, the sealing performance is improved, the sealing ring 13 surrounds the valve cover 2 from the outer wall, and the sealing performance of the valve cover 2 and the valve body 1 is further improved. This practical high pressure check valve adopts duplex stainless steel and fluororubber material, has improved equipment to marine environment's adaptability, has prolonged life.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high pressure check valve, comprising:
the valve comprises a valve body (1), a valve cover (2), a return spring (3) and a valve disc assembly (4), wherein the valve body (1) is hollow, an external thread is arranged on the outer wall of one end of the valve body (1), and an internal thread is arranged on the inner wall of the other end of the valve body (1);
the valve cover (2) is arranged in the valve body (1), and the interior of the valve cover (2) is hollow; the valve disc assembly (4) is slidably arranged on the inner wall of the valve cover (2), and one end of the valve disc assembly (4) is abutted against the inner wall of the valve cover (2); the return spring (3) is arranged on the inner wall of the valve cover (2), and the return spring (3) is abutted against the valve disc assembly (4); wherein
When the front pressure of the valve disc assembly (4) is smaller than the rear pressure of the valve disc assembly (4), the return spring (3) can push the valve disc assembly (4) to abut against the inner wall of the valve cover (2);
a first through hole (21) and a second through hole (22) which are communicated with each other are formed in the valve cover (2), the inner diameter of the second through hole (22) is larger than that of the first through hole (21), and the second through hole (22) is formed in the outlet end of the valve cover (2);
a transition inclined plane (23) is arranged at the intersection of the first through hole (21) and the second through hole (22);
the valve disc assembly (4) is arranged in the second through hole (22) in a sliding mode, and the return spring (3) can push the valve disc assembly (4) to enable the end wall of the valve disc assembly (4) to abut against the inner wall of the first through hole (21);
the valve disc assembly (4) comprises: the valve comprises a first valve disc (41), a second valve disc (42) and a fixing column (43), wherein the fixing column (43) is arranged in the valve cover (2) in a sliding mode, the first valve disc (41) is fixed at the end of the fixing column (43), and the outer diameter of the first valve disc (41) is larger than that of the fixing column (43);
the second valve disc (42) is sleeved on the outer wall of the fixing column (43), the side wall of the second valve disc (42) is abutted against the side wall of the first valve disc (41), and the outer diameter of the second valve disc (42) is larger than that of the first valve disc (41); wherein
When the pressure of the fluid in the first through hole (21) is high, the fluid pushes the first valve disc (41) to separate the end wall of the first valve disc (41) from the inner wall of the first through hole (21);
when the pressure of fluid in the first through hole (21) is small, the return spring (3) pushes the second valve disc (42) to abut against the transition inclined surface (23), and the second valve disc (42) is continuously pushed to push the first valve disc (41) to abut against the inner wall of the first through hole (21);
the first valve disc (41) is a metal valve disc;
the second valve disc (42) is a non-metallic valve disc.
2. The high pressure check valve of claim 1,
the valve disc assembly (4) further comprises a locking sheet (44), the locking sheet (44) is sleeved on the outer wall of the fixing column (43), and the locking sheet (44) fixes the second valve disc (42) on the side wall of the first valve disc (41).
3. The high pressure check valve of claim 2,
a plurality of silencing holes (11) are formed in the valve body (1), and the silencing holes (11) are parallel to the central axis of the valve body (1) at equal intervals.
4. A high pressure check valve according to claim 3,
be provided with a gasket (12) in valve body (1), gasket (12) are the ring form setting and are in valve body (1) inner wall, valve gap (2) insert valve body (1) inside back, and valve gap (2) tip offsets with gasket (12).
5. The high pressure check valve of claim 4,
the valve body (1) is also internally provided with a sealing groove which is radially arranged along the inner wall of the valve body (1);
the sealing groove internal fixation has a sealing washer (13), sealing washer (13) are "O" type, sealing washer (13) protrusion valve body (1) inner wall, when valve gap (2) insert valve body (1) inside and gasket (12) offset, sealing washer (13) offset with valve gap (2) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408154.9U CN216743003U (en) | 2021-12-31 | 2021-12-31 | High-pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408154.9U CN216743003U (en) | 2021-12-31 | 2021-12-31 | High-pressure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216743003U true CN216743003U (en) | 2022-06-14 |
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ID=81909348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123408154.9U Active CN216743003U (en) | 2021-12-31 | 2021-12-31 | High-pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216743003U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681579A (en) * | 2022-11-03 | 2023-02-03 | 大连船用阀门有限公司 | Multi-sealing low-noise high-pressure air check valve |
| CN116513368A (en) * | 2023-07-05 | 2023-08-01 | 常州耐普德新能源科技有限公司 | Cabin micro-pressure sealing device and working method |
-
2021
- 2021-12-31 CN CN202123408154.9U patent/CN216743003U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681579A (en) * | 2022-11-03 | 2023-02-03 | 大连船用阀门有限公司 | Multi-sealing low-noise high-pressure air check valve |
| CN116513368A (en) * | 2023-07-05 | 2023-08-01 | 常州耐普德新能源科技有限公司 | Cabin micro-pressure sealing device and working method |
| CN116513368B (en) * | 2023-07-05 | 2023-08-29 | 常州耐普德新能源科技有限公司 | Cabin micro-pressure sealing device and working method |
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