CN220956965U - Pressure-adjustable spherical valve one-way valve structure - Google Patents
Pressure-adjustable spherical valve one-way valve structure Download PDFInfo
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- CN220956965U CN220956965U CN202322758907.1U CN202322758907U CN220956965U CN 220956965 U CN220956965 U CN 220956965U CN 202322758907 U CN202322758907 U CN 202322758907U CN 220956965 U CN220956965 U CN 220956965U
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- seat
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- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 229920001967 Metal rubber Polymers 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 33
- 210000004907 gland Anatomy 0.000 description 5
- 239000000306 component Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model belongs to the technical field of aviation valves and discloses a pressure-adjustable spherical valve check valve structure which is characterized by comprising a check valve housing assembly, a valve seat and a pressure valve assembly, wherein the pressure valve assembly is movably arranged in the valve seat up and down; the pressure valve assembly is of a two-section structure and comprises a valve core and a sealing baffle, the end part of the valve core is connected with the sealing baffle in a manner of matching with a ball head and a ball head seat, the rear end of the valve core is connected with a pressure regulating cavity, the front end of the sealing baffle is connected with an inlet cavity, and the circumferential directions of the ball head and the ball head seat are outlet cavities.
Description
Technical Field
The utility model belongs to the technical field of aviation valves, relates to a check valve with small flow resistance and good guiding performance, and particularly relates to a pressure-adjustable spherical valve check valve structure.
Background
In the aerospace field, a check valve structure is integrated on an engine system, a control system controls a pressurized oil tank to supply oil to the engine system through instructions, and when the pressure of the pressurized oil tank reaches a specified pressure, the check valve is opened to supply oil to the engine.
The traditional check valve structure comprises parts such as check valve case, case subassembly, spring holder, and the flow resistance is great when the check valve during operation, can not filter the medium, and the check valve cracking pressure is the fixed value, can't adjust after the installation, and system medium passes through inefficiency, and the behavior is single.
Disclosure of utility model
The purpose of the utility model is that: a valve core structure is designed into a valve and a valve sealing seat which are connected through a ball head, so that flow resistance of the check valve during operation is reduced, a medium passing through the check valve is filtered at an inlet of the check valve, and meanwhile, a low-pressure port is designed, so that opening pressure of the check valve can be adjusted through an external control oil way.
The technical scheme of the utility model is as follows:
The utility model provides a spherical valve check valve structure with adjustable pressure, which is characterized in that, including check valve housing subassembly, disk seat and pressure valve subassembly, pressure valve subassembly is inside movable place from top to bottom at the disk seat, the disk seat is established in the check valve housing subassembly, the check valve housing subassembly is inside to be separated three chambeies by pressure valve subassembly and disk seat, including the inlet chamber of pressure valve subassembly import and pressure valve subassembly front end, the outlet chamber of check valve housing subassembly and pressure valve subassembly circumference, and the pressure regulating chamber of disk seat and pressure valve subassembly rear end, the inlet chamber communicates the oil inlet, pressure regulating chamber communicates the pressure regulating mouth, the outlet chamber communicates the oil-out; the pressure valve assembly is of a two-section structure and comprises a valve core and a sealing baffle, the end part of the valve core is connected with the sealing baffle in a manner of matching with a ball head and a ball head seat, the rear end of the valve core is connected with a pressure regulating cavity, the front end of the sealing baffle is connected with an inlet cavity, and the circumferential directions of the ball head and the ball head seat are outlet cavities.
Further, the valve further comprises a circlip, a bushing and a filter screen assembly, wherein the filter screen assembly is fixed on an oil inlet surface in an inlet cavity of the one-way valve housing assembly through the bushing and the circlip.
Further, the valve further comprises a spring, the spring is sleeved outside the pressure valve assembly, one end of the spring is contacted with the back surface of the sealing baffle, and the other end of the spring is contacted with the valve seat.
Further, the valve further comprises a first sealing ring, and the first sealing ring is arranged between the valve core and the valve seat.
Further, the outlet cavity is specifically: at least 5 annular oil passing holes are formed in the check valve housing assembly, the annular oil passing holes are spirally distributed, and the side face of the pressure valve assembly is communicated with the rear oil outlet of the check valve housing assembly.
Further, a metal rubber surface sealing structure is adopted between the front end of the pressure valve assembly and the oil inlet ring surface of the one-way valve housing assembly.
The utility model has the technical effects that:
According to the one-way valve structure, on the premise of realizing the one-way oil passing function of the traditional one-way valve, the valve core component is replaced by the pressure valve component and the valve seat, so that the original function can be realized, the flow resistance of the one-way valve is reduced, and the valve guidance quality is improved; the filter screen is arranged at the inlet, so that the filter screen is not easy to block, and the pollution resistance level is higher than that of the traditional one-way valve; the low pressure port can be externally connected with a control oil way to realize the adjustment of the opening pressure of the one-way valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings required to be used in the embodiments of the present utility model, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a ball valve linkage check valve structure;
FIG. 2 is a schematic diagram showing the assembly of a ball valve linkage check valve structure;
FIG. 3 is a schematic working diagram of a ball valve linkage check valve structure;
FIG. 4 is a cross-sectional view of the pressure valve assembly;
FIG. 5 is a one-way valve housing;
The valve comprises a 1-one-way valve housing assembly, a 2-circlip, a 3-bushing, a 4-filter screen assembly, a 5-adjusting gasket, a 6-spring, a 7-bushing, an 8-first sealing ring, a 9-pressure valve assembly, a 10-second sealing ring, an 11-valve seat, a 12-adjusting gasket, a 13-gland and a 14-hexagon head screw, wherein the first sealing ring is a first sealing ring;
901-sealing baffle, 902-valve core.
Detailed Description
This section is an embodiment of the present utility model for explaining and explaining the technical solution of the present utility model. Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to directions or positional relationships given to the drawings for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or case in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "first," "second," etc. may explicitly or implicitly include more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection can be realized, and the point connection can be realized; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Example 1:
The utility model provides a spherical valve check valve structure with adjustable pressure, which is characterized in that, including check valve housing assembly 1, disk seat 11 and pressure valve assembly 9, pressure valve assembly 9 is inside movable place from top to bottom at disk seat 11, disk seat 11 is established in check valve housing assembly 1, the inside three chamber that separates by pressure valve assembly 9 and disk seat 11 of check valve housing assembly 1, including pressure valve assembly 9 import with pressure valve assembly 9 front end inlet chamber, check valve housing assembly 1 and pressure valve assembly 9 circumference outlet chamber, and disk seat 11 and pressure valve assembly 9 rear end pressure regulating chamber, inlet chamber intercommunication oil inlet, pressure regulating chamber intercommunication pressure regulating mouth, outlet chamber intercommunication oil-out; the pressure valve assembly 9 is of a two-section structure and comprises a valve core and a sealing baffle, wherein the end part of the valve core is connected with the sealing baffle in a manner of matching a ball head with a ball head seat, the rear end of the valve core is connected with a pressure regulating cavity, the front end of the sealing baffle is connected with an inlet cavity, and the circumferential directions of the ball head and the ball head seat are outlet cavities.
And the check valve further comprises a circlip 2, a bushing 3 and a filter screen assembly 4, wherein the filter screen assembly 4 is fixed on an oil inlet surface in an inlet cavity of the check valve housing assembly 1 by the bushing 3 and the circlip 2.
The sealing device also comprises a spring 6, wherein the spring 6 is sleeved outside the pressure valve assembly 9, one end of the spring 6 contacts the back surface of the sealing baffle, and the other end of the spring 6 contacts the valve seat 11.
The valve further comprises a first sealing ring 8, and the first sealing ring 8 is arranged between the valve core and the valve seat 11.
The outlet cavity is specifically: at least 5 annular oil passing holes are formed in the check valve housing assembly 1, the annular oil passing holes are spirally distributed, and the side face of the pressure valve assembly 9 is communicated with the oil outlet at the rear end of the check valve housing assembly 1.
A metal rubber surface sealing structure is adopted between the front end of the pressure valve assembly 9 and the oil inlet ring surface of the one-way valve housing assembly 1.
Example 2:
The invention adopts a pressure-adjustable spherical valve check valve structure, which comprises a check valve shell, a pressure valve assembly, a spring, a valve seat, a gland, a bushing, a filter screen assembly, an adjusting gasket, an adjusting washer and a sealing ring. The pressure valve assembly is connected with the valve sealing seat through a ball head structure; the valve is installed in the disk seat, and when the check valve structure works, the pressure valve component is opened under the action of high-pressure oil, the valve sealing seat can flexibly rotate within an angle range of not less than 15 degrees, so that the flow resistance of the oil when passing is reduced, and meanwhile, the stress direction is concentrated in the axial direction of the guide rod, and the radial movement of the valve is reduced.
The invention designs a low-pressure port structure, and the bottom space of the inner hole of the valve seat is connected with an external control oil way through the vent hole and the low-pressure port.
The valve adopts a metal rubber surface sealing structure, the oil hole of the check valve housing is provided with steps, the valve sealing seat is provided with the trapezoid groove, 8 vent holes are uniformly distributed, fluororubber is filled in the trapezoid groove and vulcanized, and the sealing effect and the service life of the valve are improved.
The invention adopts the oil passing hole structure capable of being quickly disassembled and assembled, and the structure comprises 11 oil passing holes on the valve seat, wherein the oil passing holes comprise 2 threaded holes, so that the one-way valve inlet and outlet of the structure are communicated, and the valve seat of the structure is conveniently disassembled and assembled due to the design of the 2 threaded holes.
According to the invention, a filtering structure is designed, a filter screen assembly is designed at the inlet of the one-way valve and is fixed through the retainer ring bushing, so that the oil passing through the one-way valve is filtered, and the cleanliness of the system oil is ensured.
The invention adopts a gland and gasket structure to limit the internal parts of the check valve. Through part size design, make and leave the clearance between gland and the disk seat to design the adjustment packing ring therein, guarantee through the height of adjustment packing ring that the gland compresses tightly the disk seat, laminating with the check valve casing simultaneously, prevent check valve part axial float.
Example 3:
As shown in fig. 1 to 3, a ball-shaped shutter linkage check valve structure of the present invention includes: the valve comprises a check valve housing assembly 1, a circlip 2, a bushing 3, a filter screen assembly 4, an adjusting gasket 5, a spring 6, a bushing 7, a first sealing ring 8, a pressure valve assembly 9, a second sealing ring 10, a valve seat 11, an adjusting gasket 12, a gland 13 and a hexagon head screw 14. The oil enters the check valve through the inlet of the check valve, reaches the pressure valve assembly after passing through the filter screen assembly, and reaches the outlet of the check valve after passing through the oil hole when the inlet pressure value reaches the installation setting opening pressure and the pressure valve assembly is opened.
When the low-pressure port of the check valve is communicated with the atmosphere, the check valve is opened, and a valve in the pressure valve assembly moves along the direction of the guide rod and is discharged from the gas at the bottom of the inner hole of the valve seat through the low-pressure port; when the low pressure port is connected with the system control oil way, the control of the opening pressure of the one-way valve is realized by adjusting the oil pressure of the system control oil way.
The spring is compressed to 10min at the temperature of 120+/-10 ℃ and aged for 24 hours, and is vibrated for 20min on a special tester at the vibration amplitude of 7 and the vibration frequency of 600 times per minute, so that the fatigue resistance of the spring is improved, and the rigidity of the spring is ensured.
The sealing ring is arranged on the pressure valve component and moves along with the pressure valve component, and FM-5 rubber with higher tensile strength and hardness and smaller friction coefficient is selected as a material for dynamic sealing. The other 1 sealing rings are static seals, and FM-1 rubber is selected as a material.
The installation groove depth of the sealing ring is 1.5mm, the groove width is 2.4mm, the compression ratio Y of the sealing ring is 14%, the stretching ratio is 1.046, the requirement of the internal movable sealing compression ratio Y (12% -17%) is met, the minimum size compression ratio of the sealing ring is more than 7%, the requirement of the internal movable sealing minimum allowable compression ratio [ Ymin ] is met, and the check valve is ensured to not leak oil under the conditions that the inlet pressure is 2MPa and the outlet is blocked.
As shown in fig. 5, the ball grooves of the sealing baffle 901 and the ball heads of the valve core 902 are matched and ground, and the axial clearance after matched and ground is not more than 0.02mm. When the system oil fluctuates, the sealing baffle 901 can flexibly rotate within the angle range of not less than 15 degrees, so that the flow resistance of the one-way valve is reduced; the sealing baffle 901 is filled with fluororubber FX-2 (Q/6S 52007) in the trapezoid groove and vulcanized, the flatness of the vulcanized matching surface is 0.1, the maximum allowable value of roughness Ra is 0.8, and the matching tightness with the step of the check valve housing is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about various equivalent modifications or substitutions within the technical scope of the present utility model, and these modifications or substitutions should be covered in the scope of the present utility model.
Claims (6)
1. The utility model provides a spherical valve check valve structure with adjustable pressure, a serial communication port, including check valve housing assembly (1), disk seat (11) and pressure valve assembly (9), pressure valve assembly (9) are inside movable place from top to bottom in disk seat (11), disk seat (11) are established in check valve housing assembly (1), three chambeies are separated by pressure valve assembly (9) and disk seat (11) in check valve housing assembly (1), including pressure valve assembly (9) import and pressure valve assembly (9) front end's inlet chamber, check valve assembly (1) and pressure valve assembly (9) circumferential outlet chamber, and disk seat (11) and pressure valve assembly (9) rear end's pressure regulating chamber, inlet chamber intercommunication oil inlet, pressure regulating chamber intercommunication pressure regulating mouth, outlet chamber intercommunication oil-out; the pressure valve assembly (9) is of a two-section structure and comprises a valve core and a sealing baffle, the end part of the valve core is connected with the sealing baffle in a manner of matching a ball head and a ball head seat, the rear end of the valve core is connected with a pressure regulating cavity, the front end of the sealing baffle is connected with an inlet cavity, and the circumferential directions of the ball head and the ball head seat are outlet cavities.
2. The pressure-adjustable spherical valve check valve structure according to claim 1, further comprising a circlip (2), a bushing (3) and a filter screen assembly (4), wherein the filter screen assembly (4) is fixed on an oil inlet surface in an inlet cavity of the check valve housing assembly (1) by the bushing (3) and the circlip (2).
3. The pressure-adjustable spherical valve check valve structure according to claim 1, further comprising a spring (6), wherein the spring (6) is sleeved outside the pressure valve assembly (9), one end of the spring (6) contacts the back surface of the sealing baffle, and the other end of the spring (6) contacts the valve seat (11).
4. The pressure-adjustable ball valve check valve structure according to claim 1, further comprising a first seal ring (8), wherein the first seal ring (8) is disposed between the valve core and the valve seat (11).
5. The pressure-adjustable ball valve check valve structure according to claim 1, wherein the outlet chamber is specifically: at least 5 annular oil passing holes are formed in the check valve housing assembly (1), the annular oil passing holes are spirally distributed, and the side face of the pressure valve assembly (9) is communicated with the rear oil outlet of the check valve housing assembly (1).
6. The pressure-adjustable spherical valve check valve structure according to claim 1, wherein a metal rubber surface sealing structure is adopted between the front end of the pressure valve assembly (9) and the oil inlet ring surface of the check valve housing assembly (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758907.1U CN220956965U (en) | 2023-10-13 | 2023-10-13 | Pressure-adjustable spherical valve one-way valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758907.1U CN220956965U (en) | 2023-10-13 | 2023-10-13 | Pressure-adjustable spherical valve one-way valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956965U true CN220956965U (en) | 2024-05-14 |
Family
ID=90979365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322758907.1U Active CN220956965U (en) | 2023-10-13 | 2023-10-13 | Pressure-adjustable spherical valve one-way valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956965U (en) |
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2023
- 2023-10-13 CN CN202322758907.1U patent/CN220956965U/en active Active
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