Pneumatic control valve

Abstract

The utility model provides a pneumatic control valve, and belongs to the technical field of control valves. The air valve can be used for controlling on-off of water; the upper cover is fixedly connected to the upper end of the air valve through a bolt and is in matched connection with the air valve, so that the adjusting mechanism can be mounted; the adjusting mechanism comprises a gas pipe which is fixedly connected to the circumferential surface of the upper cover and can be used for controlling the flow direction of gas; the leakage-proof circular pipe is fixedly connected to the circumferential surface of the gas pipe and can be used for controlling the flow of the gas; the mounting pipe is fixedly connected to the circumferential surface of the leakage-proof circular pipe and can be used for mounting a rotating head; when the spring rusts, the rotating head can be driven by rotating the rotating rod, gas can be guided into the upper cover through the leakage-proof round pipe, the sliding plate can drive the blocking base to move downwards after being subjected to air pressure, and therefore the gas valve can be blocked, the gas valve is closed by replacing the spring, and the use effect of equipment can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of control valves, and in particular relates to a pneumatic control valve. Background Art

[0002] The control valve is composed of two main assemblies: the valve body assembly and the actuator assembly (or actuator system), which are divided into four major series: single-seat series control valve, double-seat series control valve, sleeve series control valve and self-operated series control valve.

[0003] The authorization publication number "CN 219866514 U" records "a pneumatic control valve, including a valve body, a connecting column, a valve stem, a sealing assembly and a pneumatic actuator, wherein the valve stem is located in the connecting column, the sealing assembly is connected to one end of the valve stem, and is located in the valve body to cooperate with it to seal and realize the cutting off and connecting of the valve body flow channel, the end of the valve body connected to the connecting column is provided with a connecting platform, the end of the connecting column facing the valve body is provided with a connecting block corresponding to the connecting platform, the connecting block and the connecting platform are fastened to each other by a connecting piece, the pneumatic actuator includes a shell, a shell cover fixed to the top of the shell, a piston located in the shell, a piston cover located above the piston and an elastic piece located between the shell cover and the piston cover, a limit block is provided at one end of the connecting column opposite to the connecting block, and a butterfly spring is sleeved on the connecting column to abut between the limit block and the shell. The utility model has good sealing performance, stable and firm connection and convenient rotation of the pneumatic actuator"

[0004] The above patent has good sealing performance, stable and firm connection, and the pneumatic actuator is easy to rotate. However, in the prior art, when using the air valve, the air valve can be opened by introducing gas into the air valve, but when resetting, the block seat needs to be moved under the elastic force of the spring. After long-term use, the surface of the spring will rust, thereby affecting the use effect of the spring. Utility Model Content

[0005] The utility model aims to provide a pneumatic control valve, aiming to solve the problem in the prior art that when using the air valve, the air valve can be opened by introducing gas into the air valve, but when resetting, the stop seat needs to be driven to move under the elastic force of the spring, and the surface of the spring is rusted after long-term use, thereby affecting the use effect of the spring.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pneumatic control valve, comprising:

[0008] Air valve;

[0009] An upper cover, fixedly connected to the upper end of the gas valve by bolts;

[0010] The regulating mechanism comprises:

[0011] An air pipe fixedly connected to the circumferential surface of the upper cover;

[0012] A leakproof circular tube fixedly connected to the circumferential surface of the trachea;

[0013] A mounting tube fixedly connected to the circumferential surface of the leak-proof circular tube;

[0014] A rotating head, rotatably connected to the leak-proof circular tube;

[0015] A rotating rod, fixedly connected to the circumferential surface of the rotating head;

[0016] A sliding rod, slidably connected in the air valve;

[0017] A slide plate, fixedly connected to the circumferential surface of the sliding rod;

[0018] A limiting ring, fixedly connected to the circumferential surface of the sliding rod;

[0019] A stopper, fixedly connected to the lower end of the sliding rod;

[0020] Four springs are fixedly connected to the upper end of the slide plate.

[0021] As a preferred solution of the utility model, a connecting ring is fixedly connected to the circumferential surface of the trachea, and a connecting head is slidably connected to the circumferential surface of the connecting ring.

[0022] As a preferred solution of the utility model, a mounting head is fixedly connected to the upper end of the upper cover, an annular groove is provided in the mounting head, and a waterproof ring is fixedly connected in the annular groove.

[0023] As a preferred solution of the utility model, a mounting tube is fixedly connected inside the upper cover, and the sliding rod is slidably connected inside the mounting tube.

[0024] As a preferred solution of the utility model, both ends of the gas valve are fixedly connected with connecting seats, and the side ends of the two connecting seats are each provided with six positioning holes.

[0025] As a preferred solution of the utility model, both ends of the gas valve are fixedly connected with sealing rings, the two sealing rings are fixedly connected with mounting rings, and the lower end of the gas valve is fixedly connected with a base.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] 1. In this solution, when the spring is rusted, the rotating head can be driven by rotating the rotating rod, so that the gas can be introduced into the upper cover through the leak-proof round tube. The slide plate will drive the block seat to move downward under the air pressure, thereby blocking the air valve. This facility closes the air valve by replacing the spring, thereby increasing the use effect of the equipment.

[0028] 2. In this solution, the waterproof ring arranged in the upper cover can increase the sealing between the sliding rod and the upper cover, effectively preventing leakage of the air valve during use; the mounting ring arranged in the connecting seat can increase the sealing between the connecting seat and the water pipe; the base arranged on the surface of the air valve can be used to support the air valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 This is a first-view stereogram of the utility model;

[0031] Figure 2 This is an exploded view of the utility model;

[0032] Figure 3 It is an exploded view of the trachea in the utility model;

[0033] Figure 4 It is a cross-sectional view of the trachea in the utility model;

[0034] Figure 5 It is a cross-sectional view of the gas valve in the utility model;

[0035] Figure 6 This is a stereoscopic diagram of the utility model from a second viewing angle.

[0036] In the figure: 1. air valve; 2. connecting seat; 3. positioning hole; 4. base; 5. upper cover; 6. sliding rod; 7. air pipe; 8. connecting head; 9. sealing ring; 10. mounting ring; 11. mounting head; 12. waterproof ring; 13. slide plate; 14. spring; 15. limiting ring; 16. stop seat; 17. connecting ring; 18. rotating rod; 19. rotating head; 20. leak-proof round tube; 21. mounting tube; 22. annular groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Example 1

[0039] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0040] A pneumatic control valve, comprising:

[0041] Air valve 1, can be used to control the switch of water;

[0042] The upper cover 5 is fixedly connected to the upper end of the gas valve 1 by bolts, and the regulating mechanism can be installed by being matched with the gas valve 1;

[0043] Regulatory agencies include:

[0044] The air pipe 7 is fixedly connected to the circumferential surface of the upper cover 5 and can be used to control the flow direction of the gas;

[0045] The leakproof circular tube 20 is fixedly connected to the circumferential surface of the air pipe 7 and can be used to control the flow of gas;

[0046] The mounting tube 21 is fixedly connected to the circumferential surface of the leak-proof circular tube 20 and can be used to mount the rotating head 19;

[0047] The rotating head 19 is rotatably connected to the leak-proof circular tube 20, and can introduce the gas into the upper cover 5 through the air pipe 7;

[0048] The rotating rod 18 is fixedly connected to the circumferential surface of the rotating head 19, and can drive the rotating head 19 to rotate in the leak-proof circular tube 20;

[0049] The sliding rod 6 is slidably connected to the air valve 1 and can drive the stopper 16 to slide up and down;

[0050] The slide plate 13 is fixedly connected to the circumferential surface of the sliding rod 6 and can be used to drive the sliding rod 6 to move;

[0051] The limiting ring 15 is fixedly connected to the circumferential surface of the sliding rod 6 and can limit the sliding rod 6;

[0052] The stopper 16 is fixedly connected to the lower end of the sliding rod 6 and can be used to control the closing of the air valve 1;

[0053] Four springs 14 are fixedly connected to the upper end of the slide plate 13 and can be used to drive the sliding rod 6 to limit the position.

[0054] like Figure 3 As shown, the circumferential surface of the air pipe 7 is fixedly connected with a connecting ring 17, and the connecting head 8 can be installed on the surface of the air pipe 7. The circumferential surface of the connecting ring 17 is slidably connected with the connecting head 8, and the air pipe 7 can be connected to the air source.

[0055] like Figure 2 and Figure 5 As shown, the upper end of the upper cover 5 is fixedly connected with a mounting head 11, and the waterproof ring 12 can be installed in the air valve 1. An annular groove 22 is provided in the mounting head 11, which can be used to install the waterproof ring 12. The waterproof ring 12 is fixedly connected in the annular groove 22, which can increase the sealing effect of the sliding rod 6.

[0056] like Figure 3 and Figure 5 As shown, a mounting tube 21 is fixedly connected inside the upper cover 5, which can be used to install the rotating rod 18. The sliding rod 6 is slidably connected inside the mounting tube 21, which can increase the stability of the sliding rod 6 when moving.

[0057] like Figure 2 As shown, both ends of the gas valve 1 are fixedly connected with connection seats 2, which can be used to install the gas valve 1. Six positioning holes 3 are opened at the side ends of the two connection seats 2, and the gas valve 1 can be fixedly connected to the water pipe by bolts.

[0058] like Figure 2 As shown, both ends of the air valve 1 are fixedly connected with sealing rings 9, and the mounting ring 10 can be installed in the air valve 1. The mounting rings 10 are fixedly connected inside the two sealing rings 9, which can increase the sealing between the air valve 1 and the water pipe. The lower end of the air valve 1 is fixedly connected with a base 4, which can be used to support the air valve 1.

[0059] The working principle and use process of the utility model are as follows: when the spring 14 is rusted, the rotating head 19 can be driven by rotating the rotating rod 18, so that the gas can be introduced into the upper cover 5 through the leak-proof circular tube 20. After the slide plate 13 is subjected to the air pressure, it will drive the blocking seat 16 to move downward, so that the air valve 1 can be blocked. The facility closes the air valve 1 by replacing the spring 14, thereby increasing the use effect of the equipment.

[0060] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic control valve, characterized in that: include: Air valve (1); An upper cover (5) is fixedly connected to the upper end of the gas valve (1) by means of bolts; The regulating mechanism comprises: An air pipe (7) fixedly connected to the circumferential surface of the upper cover (5); A leakproof circular tube (20) fixedly connected to the circumferential surface of the trachea (7); A mounting tube (21) fixedly connected to the circumferential surface of the leakproof circular tube (20); A rotating head (19) rotatably connected to the leak-proof circular tube (20); A rotating rod (18) fixedly connected to the circumferential surface of the rotating head (19); A sliding rod (6) slidably connected inside the air valve (1); A slide plate (13) fixedly connected to the circumferential surface of the sliding rod (6); A limiting ring (15) fixedly connected to the circumferential surface of the sliding rod (6); A stopper (16) fixedly connected to the lower end of the sliding rod (6); Four springs (14) are fixedly connected to the upper end of the slide plate (13).

2. A pneumatic control valve according to claim 1, characterized in that: A connecting ring (17) is fixedly connected to the circumferential surface of the air pipe (7), and a connecting head (8) is slidably connected to the circumferential surface of the connecting ring (17).

3. A pneumatic control valve according to claim 2, characterized in that: The upper end of the upper cover (5) is fixedly connected to a mounting head (11), an annular groove (22) is provided in the mounting head (11), and a waterproof ring (12) is fixedly connected in the annular groove (22).

4. A pneumatic control valve according to claim 3, characterized in that: A mounting tube (21) is fixedly connected inside the upper cover (5), and the sliding rod (6) is slidably connected inside the mounting tube (21).

5. A pneumatic control valve according to claim 4, characterized in that: Both ends of the gas valve (1) are fixedly connected to a connecting seat (2), and the side ends of the two connecting seats (2) are each provided with six positioning holes (3).

6. A pneumatic control valve according to claim 5, characterized in that: Both ends of the gas valve (1) are fixedly connected to sealing rings (9), and mounting rings (10) are fixedly connected inside the two sealing rings (9). The lower end of the gas valve (1) is fixedly connected to a base (4).

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