Rotary pneumatic control valve

Abstract

The utility model provides a rotary pneumatic control valve which comprises a pipe body, a fixing box is fixedly installed at the top end of the pipe body through a fixing pipe, and a rotary adjusting mechanism is arranged in the fixing box. A first piston plate and a second piston plate transversely move under the action of air pressure, the first piston plate and the second piston plate drive a gear and a rotating rod to rotate through a rack, a screw rod, a limiting plate, a valve rod and a valve element are driven to descend through the screwing effect of the screw rod and the rotating rod, and therefore opening and closing of the pneumatic control valve are achieved, a spring is not used, the sealing performance is good, and the service life is long. The height of the pneumatic control valve is reduced, so that the pneumatic control valve can be conveniently used in some narrow spaces, and the practicability is high; the screw rod and the valve rod can be limited through the limiting plate and the sliding rod; and the pneumatic control valve can be conveniently mounted between two sections of air pipes through the matching of the groove and the screw sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of air-controlled valves, in particular to a rotary air-controlled valve. Background Art

[0002] Pneumatic control valves, also known as start-up control valves, are various types of pneumatic equipment that control airflow pressure, flow rate and flow direction in pneumatic systems and ensure the normal operation of pneumatic actuators or mechanisms. Pneumatic control valves can be divided into two parts: the valve body and the valve core. For example, the valve core of a stop valve is pressed against the valve seat under the action of the valve spring and gas pressure to control the disconnection of the airflow. The stop valve uses a spring to provide power to the valve core. When the elasticity of the spring is reduced, it is easy to produce a poor seal. In addition, the opening and closing of the stop valve is the vertical movement of the valve core, which makes the stop valve high, inconvenient to install the stop valve in some narrow spaces, and has low practicality.

[0003] To this end, the utility model provides a rotary gas-controlled valve. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a rotary air-controlled valve to solve the problems raised in the above-mentioned background technology. The utility model drives the valve stem and the valve core to move up and down through the rotational movement of the gear, does not use a spring, has good sealing performance, and reduces the height of the air-controlled valve, making it convenient to use in some narrow spaces, and has high practicality.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a rotary air-controlled valve, comprising a tube body, a fixed box is fixedly installed on the top end of the tube body through a fixed tube, a rotation adjustment mechanism is arranged inside the fixed box, the rotation adjustment mechanism comprises a rotating rod, a gear, a rack, a first piston plate and a second piston plate, the rotating rod is vertically rotatably installed inside the fixed box, the gear is fixedly installed on the rotating rod, the first piston plate and the second piston plate are symmetrically fixedly installed at both ends of the rack, and the mounting mechanism is movably arranged at both ends of the tube body.

[0006] Furthermore, the first piston plate and the second piston plate are respectively arranged on both sides of the gear, and the first piston plate and the second piston plate are respectively installed in the two ends of the fixed box with limited sliding.

[0007] Furthermore, the rack is arranged to mesh with the gear in an arc shape, and rubber rings are fixedly installed inside the peripheries of the first piston plate and the second piston plate.

[0008] Furthermore, a first air inlet and outlet and a second air inlet and outlet are fixedly provided at both ends of the fixed box, respectively. The first air inlet and outlet are provided on one side of the second piston plate, and the second air inlet and outlet are provided on one side of the first piston plate.

[0009] Furthermore, a limiting block is symmetrically fixedly installed on one side of the side wall of the fixed box corresponding to the gear, and the limiting block is arranged between the first piston plate and the second piston plate.

[0010] Furthermore, the fixed tube is fixedly installed on the top of the tube body, and sliding rods are symmetrically fixedly installed on both sides of the fixed tube. A limit plate is movably installed inside the fixed tube through the sliding rod, and the limit plate is slidably installed on the sliding rod through the sliding hole.

[0011] Furthermore, a screw is fixedly installed at the center position of the top of the limit plate, and the screw passes through the fixed box and is threadedly installed inside the rotating rod. A valve stem is fixedly installed at the bottom of the limit plate, and the valve stem passes through the tube body and is arranged inside the tube body. A valve core is fixedly installed at the bottom end of the valve stem, and a sealing sleeve is arranged between the valve stem and the tube body.

[0012] Furthermore, the installation mechanism includes a groove, which is symmetrically opened on the outer wall of both ends of the tube body, a screw sleeve is slidably installed inside the groove, and a sealing rubber ring is arranged between the screw sleeve and the side wall of the groove.

[0013] The beneficial effects of the utility model are as follows: the utility model is a rotary air-controlled valve which moves laterally under the action of air pressure through the first piston plate and the second piston plate; the first piston plate and the second piston plate drive the gear and the rotating rod to rotate through the rack; the screw, the limit plate, the valve stem and the valve core are driven to descend through the screw connection between the screw and the rotating rod, thereby realizing the opening and closing of the air-controlled valve; no spring is used, the sealing is good, and the height of the air-controlled valve is reduced, which is convenient for use in some narrow spaces and has high practicality; the screw and the valve stem can be limited by the limit plate and the sliding rod; the air-controlled valve can be conveniently installed between two sections of the air pipe through the cooperation of the groove and the screw sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of a rotary gas-controlled valve of the utility model;

[0015] Figure 2 This is an overall cross-sectional view of a rotary gas-controlled valve of the utility model;

[0016] Figure 3 It is a top cross-sectional view of a fixed box of a rotary gas-controlled valve of the utility model;

[0017] In the figure: 1. tube body; 2. fixed box; 3. first air inlet and outlet; 4. second air inlet and outlet; 5. groove; 6. screw sleeve; 7. sealing rubber ring; 8. rotating rod; 9. gear; 10. rack; 11. first piston plate; 12. second piston plate; 13. screw; 14. sliding rod; 15. limit plate; 16. valve stem; 17. valve core; 18. limit block. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figures 1 to 3 The utility model provides a technical solution: a rotary gas-controlled valve, comprising a tube body 1, a fixed box 2 is fixedly installed on the top of the tube body 1 through a fixed tube, a rotary adjustment mechanism is arranged inside the fixed box 2, and the rotary adjustment mechanism comprises a rotating rod 8, a gear 9, a rack 10, a first piston plate 11 and a second piston plate 12, the rotating rod 8 is vertically rotatably installed inside the fixed box 2, the gear 9 is fixedly installed on the rotating rod 8, the first piston plate 11 and the second piston plate 12 are symmetrically fixedly installed at both ends of the rack 10, and mounting mechanisms are movably arranged at both ends of the tube body 1, the rack 10 can be driven to move through the first piston plate 11 and the second piston plate 12, so that the rack 10 meshes and drives the gear 9 to rotate, which is convenient for the subsequent lifting and lowering adjustment of the valve stem 16 and the valve core 17.

[0020] In this embodiment, the first piston plate 11 and the second piston plate 12 are respectively arranged on both sides of the gear 9, and the first piston plate 11 and the second piston plate 12 are respectively limitedly slidably installed inside the two ends of the fixed box 2, the rack 10 is arranged in arc meshing with the gear 9, and the first piston plate 11 and the second piston plate 12 are fixedly installed with a rubber ring inside the periphery, and the first air inlet and outlet 3 and the second air inlet and outlet 4 are respectively fixedly arranged at both ends of the fixed box 1, the first air inlet and outlet 3 is arranged on one side of the second piston plate 12, and the second air inlet and outlet 4 is arranged on one side of the first piston plate 11, and the fixed A limit block 18 is symmetrically fixedly installed on one side of the side wall of the fixed box 2 corresponding to the gear 9. The limit block 18 is arranged between the first piston plate 11 and the second piston plate 12. High-pressure gas can be introduced into the interior of the fixed box 2 through the first air inlet and outlet 3 and the second air inlet and outlet 4, so that the first piston plate 11 and the second piston plate 12 can move laterally inside the fixed box 2, which is convenient for driving the gear 9 to rotate through the rack 10. The first piston plate 11 and the second piston plate 12 can be limited by the limit block 18 through the rubber ring and by increasing the sealing between the first piston plate 11 and the second piston plate 12 and the fixed box 2.

[0021] In this embodiment, the fixed tube is fixedly installed on the top of the tube body 1, and sliding rods 14 are symmetrically fixedly installed on both sides of the interior of the fixed tube. A limiting plate 15 is movably installed inside the fixed tube through the sliding rod 14, and the limiting plate 15 is slidably installed on the sliding rod 14 through a sliding hole. A screw 13 is fixedly arranged at the center position of the top of the limiting plate 15, and the screw 13 passes through the fixed box 2 and is screwed and installed inside the rotating rod 8. A valve stem 16 is fixedly installed at the bottom of the limiting plate 15, and the valve stem 16 passes through the tube body 1 and is arranged inside the tube body 1. A valve core 17 is fixedly installed at the bottom of the valve stem 16, and a sealing sleeve is arranged between the valve stem 16 and the tube body 2. The screw 13 and the valve stem 16 can be limited by the limiting plate 15 and the sliding rod 14. When the gear 9 rotates, the screw connection drives the screw 13 to descend, thereby driving the valve stem 16 and the valve core 17 to descend through the limiting plate 15, so that the valve core 17 is pressed against the valve seat to realize the closing of the air control valve.

[0022] In this embodiment, the installation mechanism includes a groove 5, which is symmetrically opened on the outer wall of the two ends of the tube body 1. A screw sleeve 6 is slidably installed inside the groove 5. A sealing rubber ring 7 is arranged between the screw sleeve 6 and the side wall of the groove 5. The tube body 1 can be fixedly installed between the two sections of the air pipe through the screw sleeve 6. The sealing rubber ring 7 can increase the sealing between the screw sleeve 6 and the tube body 1.

[0023] When the rotary air-controlled valve is used, a valve seat is provided inside the tube body 1, and screw sleeves 6 are slid at both ends of the tube body 1. The screw sleeves 6 slide inside the groove 5, and the tube body 1 is placed between the two sections of the air pipe. The screw sleeves 6 are slid in the opposite direction and fixed to the air pipe through the screw sleeves 6. The sealing performance between the tube body 1 and the screw sleeves 6 is increased by the sealing rubber ring 7, so that the air-controlled valve is convenient to install. The first air inlet and outlet 3 and the second air inlet and outlet 4 are respectively connected to the cylinder. When the air-controlled valve needs to be opened, high-pressure gas is filled into the fixed box 2 through the first air inlet and outlet 3. The high-pressure gas will squeeze the second piston plate 12, so that the second piston plate 12 moves inside the fixed box 2, and the second piston plate 12 can drive the rack 10 and the first piston plate 11 to move inside the fixed box 2. The meshing of the rack 10 drives the gear 9 to rotate inside the fixed box 2 through the rotating rod 8. The screw 13 can only move up and down under the limitation of the sliding rod 14 and the limiting plate 15. The rotating rod 8 drives the limiting plate 15 to slide upward through the screw 13 through the threaded connection with the screw 13. The limiting plate 15 drives the valve stem 16 and the valve core 17 to rise, and the valve core 17 is separated from the valve seat. The two ends of the pipe body 1 are connected and enter through the second air inlet and outlet 4. The valve core 17 can be driven down by the first piston plate 11, the rack 10, the gear 9, the screw 13, and the valve stem 16, so that the valve core 17 closes the valve seat, thereby realizing the opening and closing of the air-controlled valve. No spring is used, the sealing is good, and the height of the air-controlled valve is reduced, which is convenient for use inside some narrow spaces and has high practicality.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rotary gas-controlled valve, comprising a tube body (1), characterized in that: The top end of the tube body (1) is fixedly mounted with a fixed box (2) via a fixed tube. A rotation adjustment mechanism is arranged inside the fixed box (2). The rotation adjustment mechanism comprises a rotating rod (8), a gear (9), a rack (10), a first piston plate (11) and a second piston plate (12). The rotating rod (8) is vertically rotatably mounted inside the fixed box (2). The gear (9) is fixedly mounted on the rotating rod (8). The first piston plate (11) and the second piston plate (12) are symmetrically fixedly mounted on the two ends of the rack (10). The two ends of the tube body (1) are movably provided with mounting mechanisms. The fixed tube is fixedly mounted on the top of the tube body (1). The interior of the fixed tube Slide rods (14) are symmetrically fixedly installed on both sides, and a limit plate (15) is movably installed inside the fixed tube through the slide rod (14). The limit plate (15) is slidably installed on the slide rod (14) through a sliding hole. A screw rod (13) is fixedly installed at the center position of the top of the limit plate (15). The screw rod (13) passes through the fixed box (2) and is screwed to the inside of the rotating rod (8). A valve stem (16) is fixedly installed at the bottom of the limit plate (15). The valve stem (16) passes through the tube body (1) and is arranged inside the tube body (1). A valve core (17) is fixedly installed at the bottom end of the valve stem (16), and a sealing sleeve is arranged between the valve stem (16) and the tube body (1).

2. A rotary gas-controlled valve according to claim 1, characterized in that: The first piston plate (11) and the second piston plate (12) are respectively arranged on both sides of the gear (9), and the first piston plate (11) and the second piston plate (12) are respectively installed in a limited sliding manner inside the two ends of the fixed box (2).

3. A rotary gas-controlled valve according to claim 2, characterized in that: The rack (10) is arranged in arcuate meshing with the gear (9), and rubber rings are fixedly mounted inside the peripheries of the first piston plate (11) and the second piston plate (12).

4. A rotary gas-controlled valve according to claim 3, characterized in that: A first air inlet and outlet (3) and a second air inlet and outlet (4) are fixedly arranged at both ends of the fixed box (2), the first air inlet and outlet (3) being arranged on one side of the second piston plate (12), and the second air inlet and outlet (4) being arranged on one side of the first piston plate (11).

5. A rotary gas-controlled valve according to claim 4, characterized in that: A limit block (18) is symmetrically fixedly mounted on a side wall of the fixed box (2) corresponding to one side of the gear (9), and the limit block (18) is arranged between the first piston plate (11) and the second piston plate (12).

6. A rotary gas-controlled valve according to claim 1, characterized in that: The mounting mechanism comprises a groove (5) which is symmetrically formed on the outer wall at both ends of the tube body (1). A screw sleeve (6) is slidably mounted inside the groove (5). A sealing rubber ring (7) is provided between the screw sleeve (6) and the side wall of the groove (5).

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