CN213451895U

CN213451895U - One-way non-return inflation valve

Info

Publication number: CN213451895U
Application number: CN202021345794.2U
Authority: CN
Inventors: 焦宜洪; 厉宇杰
Original assignee: Shanghai Fengxin Instrument Co ltd
Current assignee: Shanghai Fengxin Instrument Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-06-15
Anticipated expiration: 2030-07-09

Abstract

The utility model belongs to the field of inflation valves, and particularly discloses a one-way non-return inflation valve, which comprises a valve seat, wherein two ends of the valve seat are respectively provided with a threaded connector, the interior of the valve seat is provided with a reducing hole, the valve seat comprises an air inlet and an air outlet which are arranged at two ends of the valve seat and a valve cavity which is communicated with the air inlet and the air outlet, and a valve core is arranged in the valve cavity; the valve core comprises a thimble, a valve sleeve, a spring and a piston end, the thimble is embedded in the valve cavity, one end of the thimble extends into the air inlet and is connected with the valve sleeve, the other end of the thimble extends into the air outlet and is connected with the piston end, the spring is sleeved outside the thimble, one end of the spring is fixed with the bottom surface of the valve sleeve, and the other end of the spring is fixed with the bottom surface of the air inlet; the joint of the piston end and the ejector pin is provided with an avoiding groove of an invagination structure, the joint of the valve cavity and the air outlet forms an outwardly expanded conical surface, and a first O-shaped sealing ring matched with the conical surface is embedded in the avoiding groove. Convenient operation, simple structure is reliable, has avoided gas leakage hidden danger, reduction in production cost.

Description

One-way non-return inflation valve

Technical Field

The utility model relates to an aerify type valve field, specifically be an one-way contrary inflation valve who ends.

Background

The one-way check inflation valve is characterized in that fluid can only flow along the air inlet, but the medium at the air outlet can not flow back, so that the compressed air is prevented from flowing reversely. The one-way check inflation valve is a straight-through type, one end of the air outlet is connected to a pipeline of customer equipment through external mechanical threads at two ends of a valve seat, and one end of the air inlet is connected with equipment for monitoring, air supplementing and checking when the air inlet needs to be used. When a valve core is jacked open by a connector on the equipment, the vent hole on the valve core is communicated with the gas circuit after the valve core compresses the spring, and the purposes of gas supplementing, checking, monitoring and the like are realized. After the connection is disconnected, the valve core is reset by the spring force to close the gas circuit.

The traditional one-way non-return inflation valve has the following defects: 1. the production process is complex, and because the valve core and the vulcanized rubber body are tightly pressed together, the valve core is firstly processed and then sent to a factory with technical pressing for pressing; before pressing, the pressing part of the valve core needs to be cleaned and deoiled, otherwise, air leakage is easy to occur; the processing and production mode has long period and high production cost, and causes great waste. 2. In the process of jacking and resetting the valve core, a smaller eccentric angle is generated when the valve core and the valve seat are reset, so that more or less air leakage is possibly caused. 3. Although the valve core is pressed with more vulcanized rubber bodies, the valve core only has a part matched with a sealing surface, and air leakage is possibly generated due to looseness of the valve core and the pressed rubber bodies, so that materials cannot be effectively utilized, and the valve core is required to be replaced together with the air leakage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an one-way contrary inflation valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the one-way non-return inflation valve comprises a valve seat, wherein two ends of the valve seat are respectively provided with a threaded connector, a variable diameter hole is formed inside the valve seat and comprises an air inlet and an air outlet which are arranged at two ends of the valve seat and a valve cavity communicated with the air inlet and the air outlet, and a valve core is arranged in the valve cavity; the valve core comprises a thimble, a valve sleeve, a spring and a piston end, the thimble is embedded in the valve cavity, one end of the thimble extends into the air inlet and is connected with the valve sleeve, the other end of the thimble extends into the air outlet and is connected with the piston end, the spring is sleeved outside the thimble, one end of the spring is fixed with the bottom surface of the valve sleeve, and the other end of the spring is fixed with the bottom surface of the air inlet; the joint of the piston end and the ejector pin is provided with an avoiding groove of an invagination structure, the joint of the valve cavity and the air outlet forms an outwardly expanded conical surface, and a first O-shaped sealing ring matched with the conical surface is embedded in the avoiding groove.

Preferably, the threaded connectors at the two ends of the valve seat are provided with mechanical threads with different specifications.

Preferably, the inner diameters of the air inlet, the air outlet and the valve cavity are sequentially reduced, and the outer diameter of the piston end is larger than the inner diameter of the valve cavity and smaller than the inner diameter of the air outlet.

Preferably, the thimble is a hollow structure with two closed ends, and air holes communicated with the outside are symmetrically formed in two sides of the lower end of the thimble.

Preferably, the groove surface of the valve sleeve is matched with a steel wire clamp spring for the shaft, and the steel wire clamp spring for the shaft is embedded into the groove at the head of the thimble.

Preferably, a circle of sealing groove is formed in the outer portion of the valve seat, and a second O-shaped sealing ring is embedded into the sealing groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses at the first O type sealing washer of case neck installation, utilize the cooperation of first O type sealing washer and the conical surface of valve pocket and air inlet to replace the vulcanized rubber body, simple structure, also very big saving material manufacturing cost and simplified the production process.

2. The inside of the valve cavity is tightly matched with the thimble part of the valve core as a guide, so that the valve core is not easy to have an eccentric angle, and the sealing performance is good and the air leakage is not easy to cause by utilizing the matching of the piston end and the conical surface in the process of jacking and resetting the valve core.

3. If the O-shaped sealing ring is damaged for a long time to cause air leakage, the O-shaped sealing ring with the same size and model is only needed to be replaced, so that the maintenance cost is saved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the specific structure of the valve seat of the present invention;

fig. 3 is a schematic diagram of a specific structure of the valve element of the present invention.

In the figure: 1. a valve seat; 2. a threaded connector; 3. an air inlet; 4. an air outlet; 5. a valve cavity; 6. a valve core; 7. a thimble; 8. air holes; 9. a valve housing; 10. a spring; 11. the shaft is provided with a steel wire clamp spring; 12. a piston end; 13. an avoidance groove; 14. a conical surface; 15. a first O-ring seal; 16. a sealing groove; 17. and a second O-shaped sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a one-way non-return inflation valve comprises a valve seat 1, wherein two ends of the valve seat 1 are respectively provided with a threaded connector 2, the interior of the valve seat 1 is a reducing hole and comprises an air inlet 3 and an air outlet 4 which are arranged at two ends of the valve seat 1 and a valve cavity 5 which is communicated with the air inlet 3 and the air outlet 4, and a valve core 6 is arranged in the valve cavity 5; the valve core 6 comprises a thimble 7, a valve sleeve 9, a spring 10 and a piston end 12, the thimble 7 is embedded in the valve cavity 5, one end of the thimble 7 extends into the air inlet 3 to be connected with the valve sleeve 9, the other end of the thimble extends into the air outlet 4 to be connected with the piston end 12, the spring 10 is sleeved outside the thimble 7, one end of the spring is fixed with the bottom surface of the valve sleeve 9, and the other end of the spring is fixed with the bottom surface of the air inlet 3; an avoiding groove 13 with an inward-concave structure is arranged at the joint of the piston end 12 and the thimble 7, a conical surface 14 expanding outwards is formed at the joint of the valve cavity 5 and the gas outlet 4, and a first O-shaped sealing ring 15 matched with the conical surface 14 is embedded in the avoiding groove 13.

Furthermore, the threaded connectors 2 at the two ends of the valve seat 1 are provided with mechanical threads with different specifications.

Further, the inner diameters of the air inlet 3, the air outlet 4 and the valve cavity 5 are sequentially reduced, and the outer diameter of the piston end 12 is larger than the inner diameter of the valve cavity 5 and smaller than the inner diameter of the air outlet 4.

Further, the thimble 7 is a hollow structure with two closed ends, and air holes 8 communicated with the outside are symmetrically arranged on two sides of the lower end of the thimble.

Further, a shaft steel wire snap spring 11 is matched with a groove surface of the valve sleeve 9, and the shaft steel wire snap spring 11 is embedded into a groove in the head of the thimble 7.

Furthermore, a circle of sealing groove 16 is formed outside the valve seat 1, and a second O-shaped sealing ring 17 is embedded in the sealing groove 16.

The working principle is as follows: a first O-shaped sealing ring 15 which is normally arranged in an avoiding groove 13 at the neck of the valve core 6 tightly props against a conical surface 14 at the end part of the valve cavity 5 under the pressure action of a spring 10 to form a good sealing state, and at the moment, the air inlet 3 and the air outlet 4 of the valve are in a disconnected state.

When the air inlet 3 and the air outlet 4 need to be communicated, the top of the thimble 7 of the valve core 6 is pressed to compress the spring 10, the piston end 12 of the thimble 7 extends into the air outlet 4, the first O-shaped sealing ring 15 is driven to leave the conical surface 14, and the two air holes 8 at the tail part of the thimble 7 are exposed from the inner hole matched with the valve seat 1 and the valve core 6, so that the air inlet 3 is communicated with the air outlet 4, the matched thimble joint is arranged on the equipment joint connected with the valve, the connection and the communication can be realized at the same time, the automatic cut-off and sealing can be realized at the same time of the disconnection, the operation is convenient, the structure is simple and reliable, the hidden danger.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an one-way contrary inflation valve who ends, includes valve seat (1), its characterized in that: the valve seat comprises a valve seat (1), wherein two ends of the valve seat (1) are respectively provided with a threaded connector (2), a reducing hole is formed in the valve seat (1) and comprises an air inlet (3) and an air outlet (4) which are arranged at two ends of the valve seat (1) and a valve cavity (5) which is communicated with the air inlet (3) and the air outlet (4), and a valve core (6) is arranged in the valve cavity (5); the valve core (6) comprises a thimble (7), a valve sleeve (9), a spring (10) and a piston end (12), the thimble (7) is embedded in the valve cavity (5), one end of the thimble extends into the air inlet (3) to be connected with the valve sleeve (9), the other end of the thimble extends into the air outlet (4) to be connected with the piston end (12), the spring (10) is sleeved outside the thimble (7), one end of the spring is fixed with the bottom surface of the valve sleeve (9), and the other end of the spring is fixed with the bottom surface of the air inlet (3); the joint of the piston end (12) and the ejector pin (7) is provided with an avoiding groove (13) of an invagination structure, the joint of the valve cavity (5) and the air outlet (4) forms an outwardly expanded conical surface (14), and a first O-shaped sealing ring (15) matched with the conical surface (14) is embedded in the avoiding groove (13).

2. The one-way check inflation valve of claim 1, wherein: and the threaded connectors (2) at the two ends of the valve seat (1) are provided with mechanical threads with different specifications.

3. The one-way check inflation valve of claim 1, wherein: the inner diameters of the air inlet (3), the air outlet (4) and the valve cavity (5) are sequentially reduced, and the outer diameter of the piston end (12) is larger than the inner diameter of the valve cavity (5) and smaller than the inner diameter of the air outlet (4).

4. The one-way check inflation valve of claim 1, wherein: the thimble (7) is a hollow structure with two closed ends, and air holes (8) communicated with the outside are symmetrically formed in two sides of the lower end of the thimble.

5. The one-way check inflation valve of claim 1, wherein: the groove surface of the valve sleeve (9) is matched with a steel wire clamp spring (11) for the shaft, and the steel wire clamp spring (11) for the shaft is embedded into the groove in the head of the thimble (7).

6. The one-way check inflation valve of claim 1, wherein: a circle of sealing groove (16) is formed in the outer portion of the valve seat (1), and a second O-shaped sealing ring (17) is embedded into the sealing groove (16).