CN217234506U - One-way valve - Google Patents
One-way valve Download PDFInfo
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- CN217234506U CN217234506U CN202123443211.7U CN202123443211U CN217234506U CN 217234506 U CN217234506 U CN 217234506U CN 202123443211 U CN202123443211 U CN 202123443211U CN 217234506 U CN217234506 U CN 217234506U
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Abstract
The application belongs to the field of design control of fluid pipelines, and particularly relates to a one-way valve, which comprises a shell, wherein the shell is cylindrical and comprises a wide opening section with a large inner diameter and a narrow opening section with a small inner diameter, and a first boss is formed at the joint of the narrow opening section and the wide opening section; the pipe nozzle is sleeved in the inner cavity of the wide-mouth section, and a second boss is formed on the wall thickness of the pipe nozzle; the piston, the piston is arranged in the inner chamber of wide mouthful section, and first boss with slide between the second boss, first boss with distance between the second boss is greater than the length of piston, and the piston includes the great footpath section of diameter and the less path section of diameter, the big footpath section with the path section can not take place the reversal easily for the effect of concentric cylinder under the path section of piston for the path section of path section, can increase 4 bleeder vents simultaneously, guarantees unobstructed air current, realizes one-way function, and the cooperation of big footpath section and path section can make sealed effect better.
Description
Technical Field
The application belongs to the field of design control of fluid pipelines, and particularly relates to a one-way valve.
Background
The one-way valve is connected in needing one-way gas or liquid circulation pipeline, through the structure of self, need not any power and realizes the one-way flow of gas or liquid, and traditional one-way valve piston is cylindric, can produce the upset of piston perpendicular to axis often when the gas circulation, and then has lost the effect of valve.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present application provides a check valve, including:
the shell is cylindrical and comprises a wide opening section with a large inner diameter and a narrow opening section with a small inner diameter, and a first boss is formed at the joint of the narrow opening section and the wide opening section;
the pipe nozzle is sleeved in the inner cavity of the wide-mouth section, and a second boss is formed on the wall thickness of the pipe nozzle;
the piston is arranged in the inner cavity of the wide-mouth section and slides between the first boss and the second boss, the distance between the first boss and the second boss is larger than the length of the piston, the piston comprises a large-diameter section with a larger diameter and a small-diameter section with a smaller diameter, and the large-diameter section and the small-diameter section are concentric cylinders;
the large-diameter section is provided with an opening along the axial direction, and the opening and the first boss are staggered;
the small-diameter section is inserted into the inner cavity of the nozzle when the large-diameter section contacts the second boss, and the small-diameter section seals the inner cavity of the nozzle.
Preferably, the minor diameter section has an annular groove, install the rubber gasket in the annular groove, the rubber gasket is laminated with the inner chamber wall of mouthpiece.
Preferably, the tail end of the nozzle is sleeved with an outer sleeve nut, and the one-way valve is in threaded connection with the gas pipeline through the outer sleeve nut.
Preferably, the number of the open pores of the large-diameter section is 3-6, and the open pores are distributed along the circumferential array.
Preferably, the distance between the opening and the axis is 0.3-0.4 times of the diameter of the large-diameter section.
Preferably, the joint of the nozzle and the shell is provided with a groove, and the groove is provided with a sealing rubber ring.
The advantages of the present application include: the piston in the past is easy to overturn under the action of air flow after falling off, and the piston is not provided with an air vent, so that an air passage is blocked after overturning, and the one-way function cannot be realized. The utility model discloses a one-way valve, be applicable to emergent lifesaving field for the emergent system of throwing of canopy has increased the overall dimension of piston by traditional check valve relatively, and has increased two step faces, under the effect of the path section of piston, can the piston need not take place the reversal easily, increases 4 bleeder vents simultaneously, guarantees that the air current is unobstructed, realizes one-way function, and the cooperation of the path section of big diameter section and path section can make sealed effect better.
Drawings
FIG. 1 is a half-sectional view of a preferred embodiment of the one-way valve of the present application;
FIG. 2 is a piston detail view of a preferred embodiment of the subject application;
FIG. 3 is a half sectional view of a piston according to a preferred embodiment of the present application;
the device comprises a shell, a piston, a sealing rubber ring, a nozzle and a nut, wherein the shell is 1 part, the piston is 2 part, the sealing rubber ring is 3 part, and the nut is 5 part.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are implementations that are part of this application and not all implementations. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides a check valve, includes:
the shell comprises a shell 1, wherein the shell 1 is cylindrical and comprises a wide opening section with a large inner diameter and a narrow opening section with a small inner diameter, and a first boss is formed at the joint of the narrow opening section and the wide opening section;
the pipe nozzle 4 is sleeved in the inner cavity of the wide opening section, and a second boss is formed by the wall thickness of the pipe nozzle 4;
the piston 2 is arranged in the inner cavity of the wide-mouth section and slides between the first boss and the second boss, the distance between the first boss and the second boss is larger than the length of the piston 2, the piston 2 comprises a large-diameter section with a larger diameter and a small-diameter section with a smaller diameter, and the large-diameter section and the small-diameter section are concentric cylinders;
the large-diameter section is provided with an opening along the axial direction, and the opening and the first boss are staggered;
the small-diameter section is inserted into the inner cavity of the nozzle 4 when the large-diameter section contacts the second boss, and the small-diameter section seals the inner cavity of the nozzle 4.
In some optional embodiments, the small diameter section has an annular groove, a rubber gasket 3 is installed in the annular groove, the rubber gasket 3 is attached to the inner cavity wall of the nozzle 4, the rubber gasket 3 may be an elastic rubber gasket, and the outer surface of the rubber gasket is provided with an anti-abrasion fabric, so that the friction force is reduced and the durability is improved.
In some alternative embodiments, the rear end of the nozzle 4 is sleeved with an outer nut 5, and the one-way valve is in threaded connection with the gas pipeline through the outer nut 5.
In some alternative embodiments, the large diameter section has 4 openings distributed in a circumferential array.
In some alternative embodiments, the distance between the opening and the axis is 0.33 times the diameter of the large diameter section, the diameter of the large diameter section is selected to be 16.2mm, the diameter of the opening is 5mm, and the distance between the opening and the center of the large diameter section is also 5 mm.
In some alternative embodiments, the junction of the nozzle 4 and the housing 1 has a groove fitted with a sealing rubber ring.
When the emergency ejection is carried out, 12.8Mpa high-pressure gas pushes the piston 2 to move through the air inlet, the piston 2 moves to the air outlet, and the high-pressure gas enters the lower cavity of the cockpit cover actuating cylinder through the 4 air holes in the piston, so that the emergency ejection of the cockpit cover is realized.
The advantages of the present application include: the piston in the past is easy to overturn under the action of air flow after falling off, and the piston is not provided with an air vent, so that an air passage is blocked after overturning, and the one-way function cannot be realized. The utility model discloses a one-way valve, be applicable to emergent lifesaving field for the emergent system of throwing of canopy has increased the overall dimension of piston by traditional check valve relatively, and has increased two step faces, under the effect of the path section of piston, can the piston need not take place the reversal easily, increases 4 bleeder vents simultaneously, guarantees that the air current is unobstructed, realizes one-way function, and the cooperation of the path section of big diameter section and path section can make sealed effect better.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A one-way valve, comprising:
the shell (1) is cylindrical and comprises a wide opening section with a large inner diameter and a narrow opening section with a small inner diameter, and a first boss is formed at the joint of the narrow opening section and the wide opening section;
the nozzle (4) is sleeved in the inner cavity of the wide opening section, and a second boss is formed by the wall thickness of the nozzle (4);
the piston (2) is arranged in the inner cavity of the wide-mouth section and slides between the first boss and the second boss, the distance between the first boss and the second boss is larger than the length of the piston (2), the piston (2) comprises a large-diameter section with a larger diameter and a small-diameter section with a smaller diameter, and the large-diameter section and the small-diameter section are concentric cylinders;
the large-diameter section is provided with an opening along the axial direction, and the opening and the first boss are staggered;
the small-diameter section is inserted into the inner cavity of the nozzle (4) when the large-diameter section contacts the second boss, and the small-diameter section seals the inner cavity of the nozzle (4).
2. The one-way valve according to claim 1, wherein the small diameter section is provided with an annular groove, a sealing rubber ring (3) is arranged in the annular groove, and the sealing rubber ring (3) is attached to the inner cavity wall of the nozzle (4).
3. The one-way valve according to claim 1, wherein the rear end of the nozzle (4) is sleeved with an outer nut (5), and the one-way valve is in threaded connection with the gas pipeline through the outer nut (5).
4. The check valve of claim 1, wherein the number of the openings of the large diameter section is 3 to 6, and the openings are distributed in a circumferential array.
5. The check valve of claim 4, wherein the opening is spaced from the axial center by 0.3 to 0.4 times the diameter of the large diameter section.
6. The one-way valve according to claim 4, wherein the junction of the nozzle (4) and the housing (1) has a groove fitted with a sealing rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443211.7U CN217234506U (en) | 2021-12-31 | 2021-12-31 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443211.7U CN217234506U (en) | 2021-12-31 | 2021-12-31 | One-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217234506U true CN217234506U (en) | 2022-08-19 |
Family
ID=82827613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123443211.7U Active CN217234506U (en) | 2021-12-31 | 2021-12-31 | One-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217234506U (en) |
-
2021
- 2021-12-31 CN CN202123443211.7U patent/CN217234506U/en active Active
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