CN216715325U - Straight-through type check valve structure - Google Patents
Straight-through type check valve structure Download PDFInfo
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- CN216715325U CN216715325U CN202220080967.5U CN202220080967U CN216715325U CN 216715325 U CN216715325 U CN 216715325U CN 202220080967 U CN202220080967 U CN 202220080967U CN 216715325 U CN216715325 U CN 216715325U
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Abstract
The utility model relates to a straight-through type one-way valve structure which comprises an upper valve body, a lower valve body, a valve ball and at least one fastener. The upper valve body is provided with a first mounting part, an airflow channel and at least one air outlet channel, and the lower valve body is provided with a second mounting part and an air inlet channel; the first installation part is matched with the second installation part and is in sealing connection with the second installation part, and the upper valve body is fixedly connected with the lower valve body through a fastening piece. The air outlet channel, the air flow channel and the air inlet channel are sequentially communicated, and the valve ball is movably arranged in the air flow channel and can block the air inlet channel. The check valve is of a spring-free structure, the problem that the sealing is poor or even fails due to the durability of the spring is solved, the check valve is opened only by overcoming the gravity of the valve ball, the loss of gas pressure is reduced, the valve ball can be made of corrosion-resistant and aging-resistant materials, the check valve is simple to prepare, the reliability and the service life of the check valve can be greatly enhanced, and the maintenance cost of later equipment is greatly reduced. In addition, the utility model has simple structure and is beneficial to mould opening and assembly.
Description
Technical Field
The utility model relates to the technical field of one-way valves, in particular to a straight-through one-way valve structure.
Background
Check valves are also known as check valves or check valves. The reverse flow of hydraulic oil is prevented in a hydraulic system, or the reverse flow of compressed air is prevented in a pneumatic system.
The check valve structure used on the existing air compressor is usually of a spring type, compressed air jacks up a valve clack controlled by a spring by virtue of pressure from bottom to top, and after the pressure disappears, the valve clack is pressed down by the spring force to seal an air passage so as to prevent the air from flowing backwards. The one-way valve structure needs pressure to continuously overcome the pressure generated by the spring in the working process, so that the pressure loss in the air path is large. Meanwhile, the spring is in an unstable state in the pressure loss process, vibration is easy to generate, and the noise is large. In addition, after the spring is used for a period of time, the spring loses its elasticity due to rusting, corrosion, fatigue deformation and the like, so that the one-way sealing effect is poor or even fails.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a straight-through type one-way valve structure which is simple in structure, small in pressure loss and good in durability and aims to solve the problems that an existing one-way valve adopting a spring to control on-off is large in air passage pressure loss, large in noise and poor in durability.
In order to achieve the purpose, the utility model discloses a straight-through type one-way valve structure which comprises an upper valve body, a lower valve body, a valve ball and at least one fastener.
The upper valve body is provided with a first mounting part, an air flow channel and at least one air outlet channel, and the lower valve body is provided with a second mounting part and an air inlet channel; the first installation part is matched with the second installation part and is in sealing connection with the second installation part, and the upper valve body is fixedly connected with the lower valve body through a fastening piece.
The air outlet channel, the air flow channel and the air inlet channel are sequentially communicated, and the valve ball is movably arranged in the air flow channel and can block the air inlet channel.
Preferably, at least three guide rails are arranged in the airflow channel, and the guide rails enclose a guide channel for guiding the valve ball.
Preferably, the end of the air inlet channel, which is in contact with the valve ball, is provided with a first cambered surface, and the first cambered surface is matched with the shape of the valve ball.
Preferably, the surface of the first cambered surface is a smooth curved surface.
Preferably, the upper valve body is further provided with a second cambered surface matched with the valve ball in shape, and the surface of the second cambered surface is a smooth curved surface.
Preferably, a sealing ring is arranged between the first mounting part and the second mounting part.
Preferably, the periphery of the second mounting portion is provided with a receiving groove for mounting the sealing ring.
Preferably, the valve ball is a fluororubber ball.
Preferably, the upper valve body and the lower valve body are respectively provided with a sealing thread for external connection.
Preferably, the fastener is a bolt, or the fastener is a screw, and a threaded hole matched with the screw is formed in the upper valve body or the lower valve body.
The utility model has the following beneficial effects:
the check valve is of a spring-free structure, the problem that the sealing is poor or even fails due to the durability of the spring is solved, the check valve is opened only by overcoming the gravity of the valve ball, the loss of gas pressure is reduced, the valve ball can be made of corrosion-resistant and aging-resistant materials, the check valve is simple to prepare, the reliability and the service life of the check valve can be greatly enhanced, and the maintenance cost of later equipment is greatly reduced. In addition, the utility model has simple structure and is beneficial to mould opening and assembly.
Drawings
FIG. 1 is a schematic diagram of the present invention in an open state.
FIG. 2 is a schematic diagram of the present invention in the closed state.
Fig. 3 is a bottom view of the upper valve body.
Fig. 4 is a cross-sectional view of the upper valve body.
Fig. 5 is a cross-sectional view of the lower valve body.
Description of the main part symbols:
the valve comprises an upper valve body 10, a first mounting part 11, an air flow channel 12, an air outlet channel 13, an auxiliary channel 14, a guide rail 15, a second cambered surface 16 and external threads 17;
the lower valve body 20, the second mounting part 21, the air inlet channel 22, the first cambered surface 23, the accommodating groove 24 and the internal thread 25;
a valve ball 30;
a fastener 40;
and a seal ring 50.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 5, the utility model discloses a straight-through check valve structure, which comprises an upper valve body 10, a lower valve body 20, a valve ball 30 and four fastening pieces 40.
The upper valve body 10 is provided with a first mounting part 11, an air flow channel 12 and seven air outlet channels 13, wherein one air outlet channel 13 of the seven air outlet channels 13 is used as a center and is arranged in a circle, and the air outlet channel 13 positioned at the center is an auxiliary channel 14 matched with the valve ball 30. The lower valve body 20 is provided with a second mounting portion 21 and an intake passage 22. The first mounting portion 11 is adapted to and hermetically connected with the second mounting portion 21, specifically, a sealing ring 50 is disposed between the first mounting portion 11 and the second mounting portion 21, and a gap between the first mounting portion 11 and the second mounting portion 21 is sealed by the sealing ring 50. In order to prevent the seal ring 50 from falling off or shifting during installation, an accommodating groove 24 for installing the seal ring 50 is provided on the outer periphery of the second installation portion 21. The upper valve body 10 and the lower valve body 20 are fixedly connected through a fastener 40, the fastener 40 can be a bolt, and a bolt matching through hole is arranged at the corresponding position of the upper valve body 10 and the lower valve body 20; the fastening member 40 may be a screw, and a screw hole for fitting the screw may be provided on the upper valve body 10.
The air outlet channel 13, the air flow channel 12 and the air inlet channel 22 are sequentially communicated, more than three guide rails 15 are arranged in the air flow channel 12, the guide rails 15 enclose a guide channel for guiding the valve ball 30, and the guide channel does not interfere with air flow. The check ball 30 is disposed in the air flow passage 12 and is movable along the length of the guide rail 15. By the guidance of the guide passage, the valve ball 30 can be accurately abutted and blocked to the intake passage 22. In order to enable the valve ball 30 to more tightly block the intake passage 22, a first cambered surface 23 is arranged at one end of the intake passage 22, which is in contact with the valve ball 30, and the first cambered surface 23 is matched with the shape of the valve ball 30, so that a larger contact area can be achieved, and the sealing performance is improved. In addition, in order to ensure sufficient airtightness, the surface of the first arc surface 23 is provided with a smooth curved surface so that the valve ball 30 and the first arc surface 23 can be fitted more closely. Similarly, the upper valve body 10 (the auxiliary channel 14) is further provided with a second cambered surface 16 matched with the valve ball 30 in shape, the surface of the second cambered surface 16 is a smooth curved surface, the valve ball 30 is tightly attached to the second cambered surface 16, and in the moment of cutting off the gas source, the backflow high-pressure gas can better push the valve ball 30 to move, so that the reaction speed is improved. The auxiliary passage 14 is arranged in the condition that the air supply passage 22 cuts off the air supply, and the return air can push the valve ball 30 to move from the auxiliary passage 14, so that the speed of cutting off the air backflow by the one-way valve is higher.
In order to ensure sufficient durability and sealing performance, the valve ball 30 is preferably a fluororubber ball which can tightly adhere to the first cambered surface 23 or the second cambered surface 16 under the action of air pressure, and has good stability and no vibration or noise.
In addition, in order to enable the present invention to be quickly connected to an external pipe or equipment, sealing threads are respectively provided on the upper valve body 10 and the lower valve body 20, specifically, the sealing threads on the upper valve body 10 are external threads 17, and the sealing threads on the lower valve body 20 are internal threads 25. Meanwhile, the size of the one-way valve can be greatly reduced, the occupied space in the air compression system is effectively reduced, and the overall cost is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention 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 invention are included in the scope of the present invention.
Claims (10)
1. A straight-through check valve structure is characterized in that: comprises an upper valve body, a lower valve body, a valve ball and at least one fastener;
the upper valve body is provided with a first mounting part, an air flow channel and at least one air outlet channel, and the lower valve body is provided with a second mounting part and an air inlet channel; the first mounting part is matched and hermetically connected with the second mounting part, and the upper valve body is fixedly connected with the lower valve body through a fastening piece;
the air outlet channel, the air flow channel and the air inlet channel are sequentially communicated, and the valve ball is movably arranged in the air flow channel and can block the air inlet channel.
2. A flow-through one-way valve structure according to claim 1, wherein: at least three guide rails are arranged in the airflow channel, and the guide rails enclose a guide channel for guiding the valve ball.
3. A flow-through one-way valve structure according to claim 1, wherein: and a first cambered surface is arranged at one end of the air inlet channel, which is contacted with the valve ball, and the first cambered surface is matched with the appearance of the valve ball.
4. A flow-through one-way valve structure according to claim 3, wherein: the surface of the first cambered surface is a smooth curved surface.
5. A flow-through one-way valve structure according to claim 1, wherein: the upper valve body is further provided with a second cambered surface matched with the appearance of the valve ball, and the surface of the second cambered surface is a smooth curved surface.
6. A flow-through one-way valve structure according to claim 1, wherein: and a sealing ring is arranged between the first installation part and the second installation part.
7. A flow-through one-way valve structure according to claim 6, wherein: and a containing groove for installing the sealing ring is formed in the periphery of the second installation part.
8. A flow-through one-way valve structure according to claim 1, wherein: the valve ball is a fluororubber ball.
9. A flow-through one-way valve structure according to claim 1, wherein: and the upper valve body and the lower valve body are respectively provided with sealing threads for external connection.
10. A flow-through check valve construction according to claim 1, wherein: the fastener is the bolt, perhaps the fastener is the screw, be equipped with on last valve body or the lower valve body with screw complex screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080967.5U CN216715325U (en) | 2022-01-10 | 2022-01-10 | Straight-through type check valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220080967.5U CN216715325U (en) | 2022-01-10 | 2022-01-10 | Straight-through type check valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715325U true CN216715325U (en) | 2022-06-10 |
Family
ID=81891783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220080967.5U Active CN216715325U (en) | 2022-01-10 | 2022-01-10 | Straight-through type check valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715325U (en) |
-
2022
- 2022-01-10 CN CN202220080967.5U patent/CN216715325U/en active Active
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