CN209587154U - an air control valve - Google Patents

Abstract

The utility model discloses a kind of Pneumatic valves, it is intended to provide a kind of Pneumatic valve of stable adjusting pressure, its key points of the technical solution are that including cylinder body and cylinder cap, accommodating chamber is equipped with inside the cylinder cap, venthole is provided on cylinder cap, piston plate is equipped between accommodating chamber and cylinder body, clearance fit between piston plate and cylinder body, elastomer is equipped between piston plate and cylinder cap, accommodating chamber is separated into two not connected cavitys by elastomer, push rod is connected on piston plate, cylinder body is equipped with opening away from one end of cylinder cap, push rod is pierced by opening, spool and valve seat are equipped in connector sleeve, valve seat is located at connector sleeve end, valve seat center line is equipped with limbers, spool withstands limbers, push rod withstands spool, sealing is kept between spool and valve seat.Air pump pushes piston plate linear movement, and piston plate drives push rod to withstand spool, and spool and valve seat is made to keep sealing, and water generates pressure to spool by valve seat inner hole, and hydraulic pressure and piston plate thrust keep balancing.

Description

an air control valve

technical field

The utility model belongs to the field of slide valves, in particular to an air control valve.

Background technique

At present, the Chinese patent whose publication number is CN100567782C discloses a kind of air-operated valve, including valve body, valve core, front end cover and rear end cover. Air holes are respectively opened on the cover, and the valve core has a first end, a second end and a closing part, and the first end, the second end and the closing part are respectively sealed and fitted with the inner wall of the valve body. The valve body and the front end cover form the first air chamber, the second end, the valve body and the rear end cover form the second air chamber, the closing part, the second end and the valve body form the third air chamber, the first air chamber Chamber, the second air chamber and the third air chamber are hermetically sealed; the area of the front end surface of the first end is smaller than the area of the rear end surface of the second end, and the first air chamber is connected with the reset gas through the air hole on the front end cover. The circuit is connected, and the second air chamber is connected with the control air circuit through the air hole on the rear end cover.

This air control valve has a simple structure and unstable air pressure control.

Utility model content

The purpose of the utility model is to provide an air control valve. It has the advantage of being able to regulate the pressure stably.

The purpose of this utility model can be achieved through the following technical solutions:

An air control valve, comprising a cylinder body and a cylinder head, the cylinder head and the cylinder body are fixedly connected, the inside of the cylinder head is provided with an accommodating chamber, the cylinder head is provided with a vent hole, and the space between the accommodating chamber and the cylinder body is A piston disc is provided, and the gap between the piston disc and the cylinder body is matched. An elastic body is arranged between the piston disc and the cylinder head. A push rod is connected to the plate, an opening is provided at the end of the cylinder body away from the cylinder head, the push rod passes through the opening, a connecting sleeve is wrapped on the push rod, and a screw sleeve is provided between the connecting sleeve and the cylinder body, The connecting sleeve is provided with a valve core and a valve seat, the valve seat is located at the end of the connecting sleeve, a water hole is provided on the center line of the valve seat, the valve core withstands the water hole, the push rod withstands the valve core, and the valve Keep sealing between the core and the valve seat.

Preferably, the elastic body is elastic rubber, the elastic rubber is clamped between the cylinder head and the cylinder body, and the elastic rubber is provided with a bending surface in the accommodation cavity, and the bending surface is between the piston disc and the cylinder body Between, the elastic rubber middle section and the ground of the piston disc are attached to each other.

Preferably, a section of elastic rubber sandwiched between the cylinder head and the cylinder body is provided with a protrusion, and the cylinder body is provided with a groove matching it, and the protrusion and the groove cooperate with each other.

Preferably, a spring is arranged between the cylinder body and the piston disc, and the spring is arranged coaxially with the push rod.

Preferably, a piston guide sleeve is provided between the cylinder body and the piston disc.

Preferably, a dust-proof sealing ring is provided between the piston guide sleeve and the cylinder body.

Preferably, the cylinder head and the cylinder body are fixedly connected by screws.

The beneficial effects of the utility model:

By adopting the above-mentioned technical scheme, the air pump is aligned with the air hole of the cylinder head to inflate, and the gas is blown onto the elastic body, and the elastic body pushes the piston disc to move linearly, compresses the spring, and the piston disc drives the push rod to withstand the valve core, so that the valve core and the valve seat Keep it sealed, the water in the water hole passes through the inner hole of the valve seat to generate pressure on the valve core, and the water pressure and the thrust of the piston disc are kept in balance, and the pressure can be adjusted stably.

Description of drawings

Figure 1 is a schematic diagram of the overall cross-sectional connection structure.

In the figure,

1. Cylinder body; 2. Cylinder head; 3. Accommodating cavity; 4. Piston disc; 5. Elastic body; 6. Push rod; 7. Connecting sleeve; 8. Screw sleeve; 9. Valve core; 10. Valve seat; 11. Water hole; 12. Vent hole; 13. Protrusion; 14. Groove; 15. Spring; 16. Piston guide sleeve; 17. Dust-proof sealing ring; 18. Screw;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment 1: An air control valve, as shown in Figure 1, includes a cylinder body 1 and a cylinder head 2, the cylinder head 2 and the cylinder body 1 are fixedly connected, and the inside of the cylinder head 2 is provided with an accommodating chamber 3, the cylinder There is a ventilation hole 12 on the cover 2, a piston disc 4 is arranged between the accommodation cavity 3 and the cylinder body 1, and a gap fits between the piston disc 4 and the cylinder body 1, and a piston disc 4 and the cylinder head 2 are provided There is an elastic body 5, and the elastic body 5 divides the accommodating cavity 3 into two cavities that are not communicated with each other, the piston disc 4 is connected with a push rod 6, and the end of the cylinder body 1 away from the cylinder head 2 is provided with Opening, the push rod 6 passes through the opening, the push rod 6 is wrapped with a connecting sleeve 7, a screw sleeve 8 is provided between the connecting sleeve 7 and the cylinder body 1, and a valve core 9 and a valve core are arranged in the connecting sleeve 7 Valve seat 10, the valve seat 10 is located at the end of the connecting sleeve 7, the center line of the valve seat 10 is provided with a water hole 11, the valve core 9 withstands the water hole 11, the push rod 6 withstands the valve core 9, and the valve core Keep sealing between 9 and valve seat 10.

The elastic body 5 is elastic rubber, and the elastic rubber is clamped between the cylinder head 2 and the cylinder body 1, and the elastic rubber is provided with a bending surface in the accommodation cavity 3, and the bending surface is between the piston plate 4 and the cylinder body 1. Between the cylinder blocks 1, the elastic rubber intermediate section and the ground of the piston disc 4 are attached to each other.

A section of elastic rubber sandwiched between the cylinder head 2 and the cylinder body 1 is provided with a protrusion 13 , and the cylinder body 1 is provided with a groove 14 matching with it, and the protrusion 13 and the groove 14 cooperate with each other.

A spring 15 is arranged between the cylinder body 1 and the piston disc 4 , and the spring 15 is arranged coaxially with the push rod 6 .

A piston guide sleeve 16 is arranged between the cylinder body 1 and the piston disc 4 .

A dustproof sealing ring 17 is provided between the piston guide sleeve 16 and the cylinder body 1 .

The cylinder head 2 and the cylinder body 1 are fixedly connected by screws 18 .

By adopting the above-mentioned technical scheme, the air pump aligns with the vent hole 12 of the cylinder head 2 to inflate, and the gas is blown onto the elastic body 5, and the elastic body 5 pushes the piston disc 4 to move linearly, compresses the spring 15, and the piston disc 4 drives the push rod 6 to withstand the valve. The core 9 keeps the valve core 9 and the valve seat 10 sealed. The water in the water hole 11 passes through the inner hole of the valve seat 10 to generate pressure on the valve core 9. The water pressure and the thrust of the piston disc 4 are kept in balance, and the pressure can be adjusted stably.

It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" are Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot It should be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: the present utility model can still be Modifications or equivalent replacements may be made without departing from the spirit and scope of the present invention, and the appended claims are intended to cover such modifications or equivalent replacements falling within the spirit and scope of the present invention.

Claims (7)

1. An air control valve, characterized in that: comprise a cylinder block (1) and a cylinder cover (2), the cylinder cover (2) is fixedly connected with the cylinder block (1), and the cylinder cover (2) is provided with a through The air hole (12), the inside of the cylinder head (2) is provided with a housing chamber (3), the piston disc (4) is arranged between the housing chamber (3) and the cylinder body (1), and the piston disc (4) and There is clearance fit between the cylinders (1), an elastic body (5) is provided between the piston disc (4) and the cylinder head (2), and the elastic body (5) divides the accommodation chamber (3) into two Cavities that are not connected to each other, the piston disc (4) is connected with a push rod (6), the end of the cylinder body (1) facing away from the cylinder head (2) is provided with an opening, and the push rod (6) passes through the opening , the push rod (6) is wrapped with a connecting sleeve (7), a threaded sleeve (8) is provided between the connecting sleeve (7) and the cylinder body (1), and the connecting sleeve (7) is provided with The valve core (9) and the valve seat (10), the valve seat (10) is located at the end of the connecting sleeve (7), the center line of the valve seat (10) is provided with a water hole (11), the valve core (9) Withstood the water hole (11), the push rod (6) withstood the spool (9), and kept sealed between the spool (9) and the valve seat (10). 2. An air control valve according to claim 1, characterized in that: the elastic body (5) is elastic rubber, and the elastic rubber is sandwiched between the cylinder head (2) and the cylinder body (1), And the elastic rubber is provided with a bending surface in the accommodation cavity (3), the bending surface is between the piston disc (4) and the cylinder body (1), and the middle section of the elastic rubber is connected to the ground of the piston disc (4). Fit each other. 3. An air control valve according to claim 2, characterized in that: a section of elastic rubber sandwiched between the cylinder head (2) and the cylinder body (1) is provided with a protrusion (13), so that The cylinder body (1) is provided with a groove (14) matched with it, and the protrusion (13) cooperates with the groove (14). 4. An air control valve according to claim 3, characterized in that: a spring (15) is arranged between the cylinder body (1) and the piston disc (4), and the spring (15) and the push rod (6) Coaxial setting. 5. An air control valve according to claim 4, characterized in that: a piston guide sleeve (16) is provided between the cylinder body (1) and the piston disc (4). 6. An air control valve according to claim 5, characterized in that: a dust-proof sealing ring (17) is provided between the piston guide sleeve (16) and the cylinder body (1). 7. An air control valve according to claim 6, characterized in that: the cylinder head (2) and the cylinder body (1) are fixedly connected by screws (18).