CN213982158U - One-way valve sealing structure - Google Patents
One-way valve sealing structure Download PDFInfo
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- CN213982158U CN213982158U CN202023158336.0U CN202023158336U CN213982158U CN 213982158 U CN213982158 U CN 213982158U CN 202023158336 U CN202023158336 U CN 202023158336U CN 213982158 U CN213982158 U CN 213982158U
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- movable cavity
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- sealing
- air outlet
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Abstract
The utility model discloses a check valve seal structure, include: the cylinder head is internally provided with an air inlet channel and a valve core movable cavity, the air inlet channel is communicated with the valve core movable cavity, and the valve core movable cavity penetrates through the cylinder head; the nylon valve core is arranged in the valve core movable cavity, wherein a sealing end face is arranged in the valve core movable cavity, one end of the nylon valve core is provided with a sealing end matched with the sealing end face, and the bottom of the valve core movable cavity is sealed after the sealing end is tightly contacted with the sealing end face; the cylinder body is hermetically connected with the cylinder head, a piston movable cavity is arranged in the cylinder body, and the piston movable cavity is communicated with the bottom of the valve core movable cavity; the piston is arranged in the piston movable cavity; and the plug is arranged in the valve core movable cavity and seals the top of the valve core movable cavity. The structure is simple and stable, the structure not only can reduce the cost, but also can make favorable contribution to the optimization of the assembly process, and can prolong the service life of the product in high-temperature and high-pressure occasions.
Description
Technical Field
The utility model belongs to the technical field of the air pump, concretely relates to check valve seal structure.
Background
The common check valve is also called check valve, short for check valve, and is used to control the unidirectional flow of oil or gas and stop when the direction is reversed. Common one-way valves can be divided into a cone valve type and a ball valve type according to different valve core structures. The working principle is that the valve core is controlled to be opened or closed by utilizing hydraulic pressure or air pressure acting on the valve core. The existing structure adopts a steel ball/cone valve/rubber, first spring and valve body structure, and when the steel ball or cone valve is made of a material, the manufacturing cost is high, and the manufacturing process is complex; when rubber sealing is adopted, the sealing structure is easy to deform and damage under the condition of long-term high temperature and high pressure, so that sealing failure is caused, and the function of a product is reduced or failed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a check valve seal structure.
The utility model discloses the technical scheme who adopts does: a one-way valve sealing structure comprising:
the cylinder head is internally provided with an air inlet channel and a valve core movable cavity, the air inlet channel is communicated with the valve core movable cavity, and the valve core movable cavity penetrates through the cylinder head;
the nylon valve core is arranged in the valve core movable cavity, a sealing end face is arranged in the valve core movable cavity, a sealing end matched with the sealing end face is arranged at one end of the nylon valve core, and the bottom of the valve core movable cavity is sealed after the sealing end is tightly contacted with the sealing end face;
the cylinder body is connected with the cylinder head in a sealing way, a piston movable cavity is arranged in the cylinder body, and the piston movable cavity is communicated with the bottom of the valve core movable cavity;
the piston is arranged in the piston movable cavity;
and the plug is arranged in the valve core movable cavity and seals the top of the valve core movable cavity.
As an optional technical solution, the sealing structure further includes:
the first spring seat is arranged in the valve core movable cavity and is connected with one end of the nylon valve core;
the first spring is sleeved outside the nylon valve core, wherein a blocking end face for blocking the first spring is arranged in the valve core movable cavity, one end of the first spring is in contact with the blocking end face, and the other end of the first spring is connected with the first spring seat.
As an optional technical scheme, one end of the nylon valve core is provided with a clamping groove, and the first spring seat is arranged on the nylon valve core through the clamping groove.
As an optional technical scheme, an anti-withdrawal pad for blocking the plug is arranged in the valve core movable cavity, and the anti-withdrawal pad is positioned above the plug.
As an optional technical scheme, the anti-backing pad is riveted with the cylinder head.
As an optional technical scheme, an air outlet port enabling air to pass through in a single direction is further arranged on the cylinder head, and the air outlet port is communicated with the piston movable cavity.
As an optional technical scheme, still be equipped with the air outlet channel and the chamber of giving vent to anger that are linked together in the cylinder head, air outlet channel with piston activity chamber intercommunication, give vent to anger the chamber with the interface intercommunication of giving vent to anger, it will to go out the intracavity be equipped with the sealed double-screw bolt in the chamber of giving vent to anger the sealed double-screw bolt in the chamber, be equipped with sealed movable chamber of filling up in the double-screw bolt, sealed the movable intracavity of filling up is equipped with sealed the pad, sealed pad with be equipped with the second spring between the double-screw bolt.
As an optional technical solution, the piston is further connected with a connecting rod extending out of the cylinder body, the piston and the connecting rod are connected through a piston pin, and a piston ring is further sleeved outside the piston.
The utility model has the advantages that: compared with the traditional sealing structure, the structure is simpler, the structure is stable, the structure can reduce the cost and make favorable contribution to the optimization of the assembly process, the nylon valve core is made of a nylon material, the nylon material has the characteristic of high temperature and high pressure resistance, the effectiveness and the stability of the sealing structure can be further improved by applying the high temperature and high pressure resistance nylon valve core to the sealing structure, and the service life of a product in a high-temperature and high-pressure occasion is prolonged.
Drawings
Fig. 1 is a schematic view of the three-dimensional structure of the sealing structure of the check valve of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view a-a in fig. 2.
Fig. 4 is a sectional view B-B in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example (b):
as shown in fig. 1, 2 and 3, a check valve sealing structure includes: the cylinder head 1 is internally provided with an air inlet channel 101 and a valve core movable cavity 102, the air inlet channel 101 is communicated with the valve core movable cavity 102, and the valve core movable cavity 102 penetrates through the cylinder head 1; the nylon valve core 2 is arranged in the valve core movable cavity 102, wherein a sealing end surface 103 is arranged in the valve core movable cavity 102, a sealing end 201 matched with the sealing end surface 103 is arranged at one end of the nylon valve core 2, and the bottom of the valve core movable cavity 102 is sealed after the sealing end 201 is tightly contacted with the sealing end surface 103; the cylinder body 3 is hermetically connected with the cylinder head 1, a piston movable cavity 301 is arranged in the cylinder body 3, and the piston movable cavity 301 is communicated with the bottom of the valve core movable cavity 102; the piston 4 is arranged in the piston movable cavity 301; and the plug 5 is arranged in the valve core movable cavity 102 and seals the top of the valve core movable cavity 102.
A negative pressure space is formed above the piston 4 through the downward movement of the piston 4, so that the pressures on the upper side and the lower side of the sealing end 201 of the nylon valve core 2 are unbalanced, the nylon valve core 2 moves downward, the sealing end 201 is separated from the sealing end surface 103, and external air enters the negative pressure space through the air inlet channel 101; when the piston 4 moves upwards to compress, the nylon valve core 2 moves upwards under the action of air pressure, so that the sealing end 201 is in close contact with the sealing end surface 103 to form sealing, and air is led out from the air outlet connector 105 to an external air storage tank to complete air inflation.
As an optional embodiment, the sealing structure further comprises: the first spring seat 6 is arranged in the valve core movable cavity 102, and the first spring seat 6 is connected with one end of the nylon valve core 2; the first spring 7 is sleeved outside the nylon valve element 2, wherein a blocking end face 104 for blocking the first spring 7 is arranged in the valve element movable cavity 102, one end of the first spring 7 is in contact with the blocking end face 104, and the other end of the first spring 7 is connected with the first spring seat 6. The first spring 7 is compressed during the downward movement of the nylon valve core 2, so that when the piston 4 moves upwards to compress, the nylon valve core 2 can be assisted to move upwards to return the nylon valve core 2 to the initial sealing position.
As an optional embodiment, one end of the nylon valve core 2 is provided with a clamping groove 202, and the first spring seat 6 is arranged on the nylon valve core 2 through the clamping groove 202.
As an alternative embodiment, an anti-back cushion 8 for blocking the plug 5 is arranged in the valve core movable cavity 102, and the anti-back cushion 8 is located above the plug 5.
As an alternative embodiment, the anti-back-off gasket 8 is riveted to the cylinder head 1.
As an optional embodiment, the cylinder head 1 is further provided with an air outlet interface 105 for allowing air to pass through in a single direction, and the air outlet interface 105 is communicated with the piston movable cavity 301.
As an optional implementation manner, as shown in fig. 4, an air outlet channel 106 and an air outlet cavity 107 which are communicated with each other are further arranged in the cylinder head 1, the air outlet channel 106 is communicated with the piston movable cavity 301, the air outlet cavity 107 is communicated with the air outlet port 105, a stud 9 which seals the air outlet cavity 107 is arranged in the air outlet cavity 107, a gasket movable cavity is arranged in the stud 9, a gasket 10 is arranged in the gasket movable cavity, and a second spring 11 is arranged between the gasket 10 and the stud 9. Wherein, under the action of the second spring 11, the sealing gasket 10 seals the connection between the air outlet channel 106 and the air outlet cavity 107; when the piston 4 moves upward to compress, on one hand, the sealing end 201 is in close contact with the sealing end surface 103 to form sealing of the valve core movable cavity 102, on the other hand, the sealing gasket 10 is pushed open and moves upward under the action of air pressure, so that the air outlet channel 106 is communicated with the air outlet cavity 107, and the air compressed by the piston 4 sequentially passes through the air outlet channel 106 and the air outlet cavity 107 and is finally discharged through the air outlet interface 105.
As an alternative embodiment, a sealing ring 12 and a pressing ring 13 for pressing the sealing ring 12 are provided on one end of the piston 4 close to the valve element moving cavity 102 to ensure the sealing between the piston 4 and the cylinder 3.
In an alternative embodiment, a connecting rod 14 extending out of the cylinder 3 is further connected to the piston 4, the piston 4 and the connecting rod 14 are connected through a piston pin 15, and a piston ring 16 is further sleeved outside the piston 4. Wherein the up and down movement of the piston 4 is achieved by the movement of the connecting rod 14.
In the application, the product works by the way that the piston 4 moves downwards to form pressure difference, gas enters from the gas inlet channel 101 of the cylinder head 1 to jack the nylon valve core 2, and enters into the compression cavity (namely the negative pressure space) to prepare for compression; when the piston 4 moves upwards to compress, the nylon valve core 2 contacts with the end face of the cylinder body under the action of air pressure to form sealing, and air passes through the air outlet channel 106 and the air outlet cavity 107 in sequence and is discharged from the air outlet connector 105 to enter an external air storage tank to finish air inflation. Compared with the traditional sealing structure, the structure is simpler, the structure is stable, the structure can reduce the cost and make favorable contribution to the optimization of the assembly process, wherein the nylon valve core 2 is made of a nylon material, the nylon material has the characteristic of high temperature and high pressure resistance, the effectiveness and the stability of the sealing structure can be further improved by applying the high temperature and high pressure resistance nylon valve core 2 to the sealing structure, and the service life of a product in a high-temperature and high-pressure occasion is prolonged.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (8)
1. A one-way valve sealing structure, comprising:
the cylinder head is internally provided with an air inlet channel and a valve core movable cavity, the air inlet channel is communicated with the valve core movable cavity, and the valve core movable cavity penetrates through the cylinder head;
the nylon valve core is arranged in the valve core movable cavity, a sealing end face is arranged in the valve core movable cavity, a sealing end matched with the sealing end face is arranged at one end of the nylon valve core, and the bottom of the valve core movable cavity is sealed after the sealing end is tightly contacted with the sealing end face;
the cylinder body is connected with the cylinder head in a sealing way, a piston movable cavity is arranged in the cylinder body, and the piston movable cavity is communicated with the bottom of the valve core movable cavity;
the piston is arranged in the piston movable cavity;
and the plug is arranged in the valve core movable cavity and seals the top of the valve core movable cavity.
2. The check valve sealing structure of claim 1, further comprising:
the first spring seat is arranged in the valve core movable cavity and is connected with one end of the nylon valve core;
the first spring is sleeved outside the nylon valve core, wherein a blocking end face for blocking the first spring is arranged in the valve core movable cavity, one end of the first spring is in contact with the blocking end face, and the other end of the first spring is connected with the first spring seat.
3. The check valve sealing structure according to claim 2, wherein: one end of the nylon valve core is provided with a clamping groove, and the first spring seat is arranged on the nylon valve core through the clamping groove.
4. The check valve sealing structure according to claim 1, wherein: and an anti-withdrawing pad used for blocking the plug is arranged in the valve core movable cavity, and the anti-withdrawing pad is positioned above the plug.
5. The check valve sealing structure according to claim 4, wherein: the anti-retreat pad is riveted with the cylinder head.
6. The check valve sealing structure according to claim 1, wherein: the cylinder head is also provided with an air outlet port which enables air to pass through in a single direction, and the air outlet port is communicated with the piston movable cavity.
7. The check valve sealing structure according to claim 6, wherein: the cylinder head is also internally provided with an air outlet channel and an air outlet cavity which are communicated, the air outlet channel is communicated with the piston movable cavity, the air outlet cavity is communicated with the air outlet interface, the air outlet cavity is internally provided with a stud for sealing the air outlet cavity, the stud is internally provided with a sealing gasket movable cavity, the sealing gasket movable cavity is internally provided with a sealing gasket, and a second spring is arranged between the sealing gasket and the stud.
8. The check valve sealing structure according to claim 1, wherein: the piston is also connected with a connecting rod extending out of the cylinder body, the piston is connected with the connecting rod through a piston pin, and a piston ring is sleeved outside the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023158336.0U CN213982158U (en) | 2020-12-24 | 2020-12-24 | One-way valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023158336.0U CN213982158U (en) | 2020-12-24 | 2020-12-24 | One-way valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213982158U true CN213982158U (en) | 2021-08-17 |
Family
ID=77247762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023158336.0U Active CN213982158U (en) | 2020-12-24 | 2020-12-24 | One-way valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213982158U (en) |
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2020
- 2020-12-24 CN CN202023158336.0U patent/CN213982158U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiao Ran Inventor after: Zeng Qiang Inventor after: Li Zeping Inventor after: Xia Dong Inventor before: Xiao Ran Inventor before: Zeng Qiang Inventor before: Li Zeping Inventor before: Xia Dong |