Pressing type pneumatic control valve

Abstract

The utility model discloses a pressing type pneumatic control valve which comprises a valve body, a connecting frame is installed at the top end of the valve body in a bolting mode, a pneumatic control valve is installed at the top end of the connecting frame in a bolting mode, and a valve rod is installed in the pneumatic control valve in a linkage mode. A limiting seat is fixedly installed at the top end of the pneumatic control valve, the valve rod penetrates through the valve rod to be movably installed, an installation plate is installed on the upper surface of the limiting seat in a bolted mode, and two arc-shaped plates are movably installed on the upper portion of the installation plate. When the pneumatic control valve works to lift the valve rod to control the valve body, the electric driver in the limiting box controls the electric push rod to push the arc-shaped plates, so that the two arc-shaped plates can be attached to the surface of the valve rod to clamp the valve rod, the limiting of the valve rod is completed, the working duration of the pneumatic control valve can be shortened, and the working efficiency of the pneumatic control valve is improved. Therefore, the service life of the device is prolonged, and fatigue loss, caused by continuous work of the pneumatic control valve, of a pushing structure in the pneumatic control valve is reduced.

Description

Technical Field

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

[0002] Pneumatic valves are important control components in the process of softeners. They are used to switch the process of softeners and change the working state of softeners. The quality of pneumatic valves directly affects whether the softeners can operate normally and whether qualified softened water can be produced. There has been no suitable disassembly and assembly tool for pneumatic valves. At present, springs are usually used inside pneumatic valves to complete the reset of the valve stem.

[0003] For example, patent announcement number CN 218814145 U discloses a push-type pneumatic control valve, which includes at least one starting device and a pushing airbag, and the starting device and the pushing airbag are connected by a connecting tube; when the starting device is pressed, the pushing airbag starts the drainage system of the toilet; the starting device includes a compressed airbag, a reset member and a sealing member; there is a ventilation channel between the compressed airbag and the outside world; when the starting device is pressed, the reset member pushes the sealing member to seal the ventilation channel, so that the air in the compressed airbag enters the pushing airbag; when the external force is removed, the reset force of the reset member resets the compressed airbag, and the sealing member detaches from the ventilation channel to allow the air in the pushing airbag to directly connect with the outside world. By setting a sealing member to seal or detach from the ventilation channel, the flow of air in the compressed airbag after the starting device is pressed or released, thereby starting or ending drainage, and there is no need to set up an air pump and a pressure reducing valve; the structure is simpler and easy to operate;

[0004] The above patent still has some problems when in use. The valve stem position is controlled by inflating the airbag, and the airbag needs to be kept inflated, which will cause the pneumatic control valve to work continuously. However, the fatigue of the pushing structure is greatly prompted, so a push-type pneumatic control valve is now needed. Utility Model Content

[0005] The utility model aims to provide a push-type pneumatic control valve, which clamps and limits the valve stem by means of an arc-shaped plate, thereby prolonging the service life of the pneumatic control valve and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a push-type pneumatic control valve, comprising a valve body, a connecting frame bolted to the top of the valve body, a pneumatic control valve bolted to the top of the connecting frame, and a valve stem linked to the inside of the pneumatic control valve;

[0007] A limit seat is fixedly installed at the top of the pneumatic control valve, the valve stem penetrates the pneumatic control valve and is movably installed, a mounting plate is bolted to the upper surface of the limit seat, two groups of arc plates are movably installed on the upper part of the mounting plate, and the two groups of arc plates are movably fitted to the surface of the valve stem and tightly installed;

[0008] Two groups of arc-shaped clamping plates are rotatably mounted on both ends of the valve body.

[0009] Preferably, a protective sleeve is installed through the center of the limit seat, the outer arc surface of the valve stem is slidably installed in contact with the inner wall of the protective sleeve, a limit plate is fixedly installed on the top of the valve stem, and a first anti-slip bump is provided on the outer arc surface of the valve stem.

[0010] Preferably, the mounting plate is bolted to the surface of the limit seat by means of locking bolts, a through hole is formed through the center of the mounting plate, and the valve stem extends from the through hole.

[0011] Preferably, two groups of limit boxes are bolted and installed symmetrically on the upper surface of the mounting plate, arc grooves are opened on corresponding sides of the two groups of limit boxes, and a storage groove is opened inside each group of the arc grooves.

[0012] Preferably, an electric push rod is arranged inside the limit box, a connecting block is fixedly installed in the middle of the outer arc of the arc plate, the electric push rod is bolted to the connecting block, and a second anti-slip protrusion is arranged on the inner arc surface of the arc plate.

[0013] Preferably, sealing locks are installed at both ends of the valve body, two groups of positioning ear plates are symmetrically installed on the outside of each group of sealing locks, a group of rotating plates are rotatably installed inside each group of positioning ear plates, the arc clamping plate is fixedly installed at the end of the rotating plate, and the two groups of arc clamping plates on the same side are bolted and installed by connecting bolts.

[0014] Preferably, a group of connecting pipes is installed at the outer ends of each group of sealing lock heads, and an anti-slip rubber ring is installed on the outer arc surface of each group of connecting pipes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When the pneumatic control valve is working to control the valve stem to rise and fall to control the valve body, the electric push rod is controlled by the electric driver inside the limit box to push the arc plate, so that the two sets of arc plates can fit the surface of the valve stem to clamp the valve stem, thereby completing the limit of the valve stem, which can reduce the working duration of the pneumatic control valve and keep the valve body in an open state for continuous use, thereby improving the service life of the device and reducing the fatigue wear of the internal driving structure of the pneumatic control valve caused by the continuous operation of the pneumatic control valve.

[0017] 2. The arc-shaped clamping plates rotatably installed on both sides of the valve body can limit the pipeline connected to the valve body, thereby improving the sealing and safety of the connection between the pipeline and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is an enlarged view of the structure at A of the utility model;

[0021] Figure 4 This is a disassembled diagram of the installation structure of the arc plate of the utility model;

[0022] Figure 5 This is a view of the installation structure of the arc-shaped splint of the utility model.

[0023] In the figure: 1. valve body; 2. connecting frame; 3. pneumatic control valve; 4. limit seat; 5. protective cover; 6. valve stem; 7. limit plate; 8. first anti-skid protrusion; 9. mounting plate; 10. locking bolt; 11. through hole; 12. limit box; 13. storage slot; 14. electric push rod; 15. arc plate; 16. connecting block; 17. second anti-skid protrusion; 18. sealing lock head; 19. positioning ear plate; 20. connecting pipe; 21. anti-skid rubber ring; 22. rotating plate; 23. arc clamping plate; 24. connecting bolt. DETAILED DESCRIPTION

[0024] 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.

[0025] The utility model provides: a push-type pneumatic control valve, such as Figure 1-Figure 5 As shown, it comprises a valve body (1), the top end of the valve body (1) is bolted with a connecting frame (2), the top end of the connecting frame (2) is bolted with a pneumatic control valve (3), and the pneumatic control valve (3) is internally linked with a valve stem (6); a limit seat (4) is fixedly installed at the top end of the pneumatic control valve (3), the valve stem (6) penetrates the pneumatic control valve (3) and is movably installed, the upper surface of the limit seat (4) is bolted with a mounting plate (9), the upper part of the mounting plate (9) is movably mounted with two groups of arc plates (15), and the two groups of arc plates (15) are movably fitted to the surface of the valve stem (6) and are tightly installed; two groups of arc clamping plates (23) are rotatably installed at both ends of the valve body (1).

[0026] Preferably, a protective sleeve (5) is installed through the center of the limit seat (4), the outer arc surface of the valve stem (6) is slidably installed in contact with the inner wall of the protective sleeve (5), a limit plate (7) is fixedly installed on the top of the valve stem (6), and a first anti-slip protrusion (8) is provided on the outer arc surface of the valve stem (6). The limit seat (4) installed on the top of the pneumatic control valve (3) enables the mounting plate (9) to be stably connected to the pneumatic control valve (3) for use. The limit seat (4) is opened through the center The protective sleeve (5) is used to improve the limit of the valve stem (6), so that the movement of the valve stem (6) is more stable. The first anti-skid protrusion (8) arranged on the outer arc surface of the valve stem (6) cooperates with the second anti-skid protrusion (17) on the inner wall of the arc plate (15). After the arc plate (15) moves to clamp the valve stem (6), the position of the valve stem (6) can be made more stable. The limit plate (7) installed at the top end of the valve stem (6) limits the valve stem (6) to improve the safety of the movement of the valve stem (6).

[0027] Furthermore, the mounting plate (9) is bolted to the surface of the limit seat (4) by means of a locking bolt (10); a through hole (11) is provided through the center of the mounting plate (9); the valve stem (6) extends from the inside of the through hole (11); the through hole (11) provided through the center of the mounting plate (9) enables the valve stem (6) to be stably raised and lowered, and enables the valve stem (6) to be clamped by the arc plate (15) to control the height of use, thereby reducing the wear and tear of the pneumatic control valve (3).

[0028] Furthermore, two groups of limit boxes (12) are symmetrically bolted and installed on the upper surface of the mounting plate (9), and arc grooves are provided on the corresponding sides of the two groups of limit boxes (12). A storage groove (13) is provided inside each group of arc grooves, and an electric push rod (14) is arranged inside the limit box (12). A connecting block (16) is fixedly installed in the middle of the outer arc of the arc plate (15), and the electric push rod (14) and the connecting block (16) are bolted and installed. A second anti-slip protrusion (17) is arranged on the inner arc surface of the arc plate (15). An electric driver is arranged inside the limit box (12) installed on the upper surface of the mounting plate (9), and the electric push rod (14) is controlled by the electric driver to extend and retract to control the position of the arc plate (15), so that the arc plate (15) can be pressed against the surface of the valve stem (6).

[0029] Specifically, sealing locks (18) are installed at both ends of the valve body (1), and two groups of positioning ear plates (19) are symmetrically installed on the outside of each group of sealing locks (18), and a group of rotating plates (22) are rotatably installed inside each group of positioning ear plates (19). The arc clamping plate (23) is fixedly installed at the end of the rotating plate (22), and the two groups of arc clamping plates (23) on the same side are bolted and installed by connecting bolts. The positioning ear plates (19) installed at both ends of the sealing lock (18) limit the rotating plate (22), and the two groups of arc clamping plates (23) can be rotated and closed to clamp the external pipeline, and the positions of the two groups of arc clamping plates (23) on the same side are locked by connecting bolts (24), thereby further improving the sealing performance of the corresponding device as a whole and the external connection.

[0030] In addition, a group of connecting pipes (20) are connected and installed at the outer ends of each group of sealing lock heads (18), and an anti-slip rubber ring (21) is installed on the outer arc surface of each group of connecting pipes (20). The connecting pipes (20) and the anti-slip rubber ring (21) ensure the sealing of the connection between the external pipeline and the device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A push-type pneumatic control valve, characterized in that: It comprises a valve body (1), a connecting frame (2) is bolted to the top of the valve body (1), a pneumatic control valve (3) is bolted to the top of the connecting frame (2), and a valve stem (6) is installed in the pneumatic control valve (3) in a linkage manner; A limit seat (4) is fixedly mounted on the top of the pneumatic control valve (3); the valve stem (6) penetrates the pneumatic control valve (3) and is movably mounted; a mounting plate (9) is bolted to the upper surface of the limit seat (4); two groups of arc plates (15) are movably mounted on the upper part of the mounting plate (9); and the two groups of arc plates (15) are movably mounted in contact with the surface of the valve stem (6); Two sets of arc-shaped clamping plates (23) are rotatably mounted on both ends of the valve body (1).

2. A push-type pneumatic control valve according to claim 1, characterized in that: A protective sleeve (5) is installed through the center of the limit seat (4); the outer arc surface of the valve stem (6) is slidably installed in contact with the inner wall of the protective sleeve (5); a limit plate (7) is fixedly installed on the top of the valve stem (6); and a first anti-slip bump (8) is provided on the outer arc surface of the valve stem (6).

3. A push-type pneumatic control valve according to claim 2, characterized in that: The mounting plate (9) is bolted to the surface of the limit seat (4) via a locking bolt (10); a through hole (11) is provided through the center of the mounting plate (9), and the valve stem (6) extends from the inside of the through hole (11).

4. A push-type pneumatic control valve according to claim 3, characterized in that: Two groups of limit boxes (12) are bolted and installed symmetrically on the upper surface of the installation plate (9), and arc grooves are opened on the corresponding sides of the two groups of limit boxes (12), and a storage groove (13) is opened inside each group of the arc grooves.

5. A push-type pneumatic control valve according to claim 4, characterized in that: An electric push rod (14) is arranged inside the limit box (12), a connecting block (16) is fixedly installed in the middle of the outer arc of the arc plate (15), the electric push rod (14) and the connecting block (16) are bolted and installed, and a second anti-slip protrusion (17) is arranged on the inner arc surface of the arc plate (15).

6. A push-type pneumatic control valve according to claim 5, characterized in that: Sealing locks (18) are installed at both ends of the valve body (1), and two groups of positioning ear plates (19) are symmetrically installed on the outside of each group of sealing locks (18). A group of rotating plates (22) is rotatably installed inside each group of positioning ear plates (19). The arc clamping plate (23) is fixedly installed at the end of the rotating plate (22), and the two groups of arc clamping plates (23) on the same side are bolted and installed by connecting bolts.

7. A push-type pneumatic control valve according to claim 6, characterized in that: The outer ends of each group of sealing lock heads (18) are connected to a group of connecting pipes (20), and the outer arc surface of each group of connecting pipes (20) is installed with an anti-slip rubber ring (21).

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