Totally-closed overhead hand wheel pneumatic actuator

Abstract

The utility model relates to the technical field of pneumatic valves, in particular to a totally-closed overhead hand wheel pneumatic actuator which comprises an air cylinder body, a piston is slidably connected to the inner wall of the air cylinder body, a sliding barrel is fixedly connected to the top end of the piston, and a piston rod is fixedly connected to the bottom end of the piston. The top end of the piston is connected with a hand wheel controller through a manual control structure, the outer wall of the air cylinder body is fixedly connected with a connecting assembly, and a connecting block is connected with an inserting assembly through a limiting structure. According to the air inflation device, the air inflation device and the connecting assembly on the pneumatic actuator can be conveniently and rapidly connected through the inserting assembly in the limiting structure, so that connection is tighter, connection through a bolt and other modes is not needed any more, damage to the actuator is avoided, disassembly is easier, and the service life of the air inflation device is prolonged. And moreover, the moving distance of the hand wheel part is shortened, more sufficient space is reserved after use, the device is more suitable for an area with smaller space, and the practicability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic valves, in particular to a fully enclosed overhead handwheel pneumatic actuator. Background Art

[0002] Pneumatic actuators are devices that use air pressure to open, close or adjust valves. They are also called pneumatic actuators or pneumatic devices, and are often referred to as pneumatic heads. Pneumatic actuators mainly control the increase or decrease of pressure in the cylinder based on control signals, thereby driving the piston to move.

[0003] Pneumatic actuators are widely used in many fields, including fluid control, manufacturing and energy industries. In the field of fluid control, pneumatic actuators are usually used to control various valves, such as ball valves, stop valves, regulating valves, etc., to achieve fluid regulation and control. In the manufacturing industry, pneumatic actuators are often used to drive automation equipment such as robots and conveyor belts. In the energy industry, pneumatic actuators are used to drive pumps, pipelines, valves and other equipment to control process flows such as oil, natural gas and chemicals.

[0004] A fully enclosed overhead handwheel pneumatic actuator with application number CN202321230484.X includes a cylinder body, a piston, a piston rod and a sliding rod. The cylinder body is slidably connected to the piston, and the two ends of the piston are respectively connected to the piston rod and the sliding rod. It also includes a manual seat, a screw sleeve, a handwheel, a screw and a latch. The cylinder body is connected to the manual seat, the manual seat is rotatably connected to the screw sleeve, the screw sleeve is connected to the handwheel, the sliding rod is detachably connected to the screw via the latch, the screw is meshingly connected to the screw sleeve, and the sliding rod is provided with a receiving groove for accommodating the screw.

[0005] The above patent document has the beneficial effects of controlling the pneumatic actuator to switch between pneumatic mode and manual mode by a pin, and the pneumatic actuator must be completely stopped before switching, which is simple to operate and has a stable structure. However, the above device is not provided with a component for installing the inflation device, so that the inflation device can only be fixed by bolts or adhesives, which is easy to fall off or cause damage to the actuator body, and the handwheel part is too long, which is not suitable for use in narrow areas, and its practicality is greatly reduced. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings that the existing above-mentioned device is not provided with a component for installing the inflation device, so that the inflation device can only be fixed by bolts or adhesives, which is easy to fall off or cause damage to the actuator body, and the handwheel part is too long and is not suitable for use in narrow areas, thus greatly reducing the practicality. A fully enclosed overhead handwheel pneumatic actuator is proposed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A fully enclosed overhead handwheel pneumatic actuator comprises a cylinder body, the inner wall of the cylinder body is slidably connected to a piston, the top end of the piston is fixedly connected to a slide cylinder, the bottom end of the piston is fixedly connected to a piston rod, the top end of the piston is connected to a handwheel controller via a manual control structure, the outer wall of the cylinder body is fixedly connected to a connecting component, and the connecting component is connected to an insertion component via a limiting structure.

[0009] Preferably, the manual control structure includes a screw, a first spring, a rotating block, a handwheel, evenly distributed jacks, air holes, a pin, and a limiting block. The bottom end of the screw is rotatably connected to the top end of the piston, the screw is threadedly connected to the outer wall of the slide cylinder, one end of the first spring is fixedly connected to the top end of the piston, the other end of the first spring is fixedly connected to the top end of the inner wall of the cylinder body, the rotating block is rotatably connected to the top outer wall of the slide cylinder, the rotating block is threadedly connected to the screw, and the handwheel is fixedly connected to the outer wall of the rotating block.

[0010] Preferably, the jack is arranged on the outer wall of the rotating block, the air hole is arranged at the top of the cylinder body, the latch is slidingly connected to the jack and the air hole respectively, and the limiting block is fixedly connected to the outer wall of the latch.

[0011] Preferably, the limiting structure includes a connecting block, a symmetrically distributed first groove, a sliding hole, a second spring, a limiting rod, a socket, a second groove, an insert block, an arc groove, and an adapter block. The connecting block is fixedly connected to the outer wall of the cylinder body, the first groove is arranged on both sides of the connecting block, the sliding hole is arranged on the outer wall of the connecting block, one end of the second spring is fixedly connected to the inner wall of the sliding hole, the limiting rod is slidably connected to the sliding hole, and the socket is arranged on the outer wall of the connecting block.

[0012] Preferably, the insert block is fixedly connected to the outer wall of the insert component, the arc groove is provided on the outer wall opposite to the insert block, and the adapter block is fixedly connected to the outer wall of the insert component.

[0013] Preferably, the position and size of the first groove are matched with those of the adapter block, the other end of the second spring is fixedly connected to the bottom end of the limiting rod, the insert block is slidably connected to the second groove, the second groove is arranged on the outer wall of the limiting rod, and a hemisphere is provided at the bottom end of the second groove, which is matched with the arc groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When the utility model is in use, the inflatable device can be conveniently and quickly connected to the connecting component on the pneumatic actuator through the insertion component in the limiting structure, so that the connection is tighter and no longer connected by bolts or the like, thereby avoiding damage to the actuator, making it easier to disassemble and lasting longer.

[0016] 2. When the utility model is in use, the length of the manual controller, the internal screw and the slide can be shortened, and the position of the internal movement can be adjusted, so that the moving distance of the hand wheel part becomes shorter, leaving more sufficient space after use, which is more suitable for areas with smaller spaces and greatly increases practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the fully enclosed overhead handwheel pneumatic actuator proposed by the utility model;

[0018] Figure 2 This is a half-section three-dimensional structural schematic diagram of the fully enclosed overhead handwheel pneumatic actuator proposed by the utility model;

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the connection assembly of the fully enclosed overhead handwheel pneumatic actuator proposed by the utility model

[0020] Figure 4 A schematic diagram of the three-dimensional structure of the insertion assembly of the fully enclosed overhead handwheel pneumatic actuator proposed by the utility model

[0021] Figure 5 This is an enlarged view of structure A of the fully enclosed overhead handwheel pneumatic actuator proposed by the utility model.

[0022] In the figure: 1 cylinder body, 2 piston, 3 slide cylinder, 4 piston rod, 5 handwheel controller, 6 connecting assembly, 7 insert assembly, 8 screw rod, 9 first spring, 10 rotating block, 11 handwheel, 12 socket, 13 air hole, 14 latch, 15 limit block, 16 connecting block, 17 first groove, 18 slide hole, 19 second spring, 20 limit rod, 21 socket, 22 second groove, 23 insert block, 24 arc groove, 25 adapter block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 5 A fully enclosed overhead handwheel pneumatic actuator comprises a cylinder body 1, the inner wall of the cylinder body 1 is slidably connected with a piston 2, the top of the piston 2 is fixedly connected with a slide cylinder 3, the bottom of the piston 2 is fixedly connected with a piston rod 4, the top of the piston 2 is connected with a handwheel controller 5 through a manual control structure, the outer wall of the cylinder body 1 is fixedly connected with a connecting component 6, and the connecting component 6 is connected with an insertion component 7 through a limiting structure.

[0025] Furthermore, the manual control structure includes a screw 8, a first spring 9, a rotating block 10, a handwheel 11, evenly distributed sockets 12, air holes 13, a latch 14, and a limiting block 15. The bottom end of the screw 8 is rotatably connected to the top end of the piston 2, the screw 8 is threadedly connected to the outer wall of the slide 3, one end of the first spring 9 is fixedly connected to the top end of the piston 2, the other end of the first spring 9 is fixedly connected to the top end of the inner wall of the cylinder body 1, the rotating block 10 is rotatably connected to the top outer wall of the slide 3, the rotating block 10 is threadedly connected to the screw 8, and the handwheel 11 is fixedly connected to the outer wall of the rotating block 10.

[0026] The handwheel controller 5 is composed of a rotating block 10 and a handwheel 11 . The screw rod 8 can be controlled to move up and down by rotating the handwheel controller 5 , thereby realizing manual control of the movement of the piston rod 4 .

[0027] Furthermore, the jack 12 is arranged on the outer wall of the rotating block 10 , the air hole 13 is arranged at the top of the cylinder body 1 , the latch 14 is slidingly connected to the jack 12 and the air hole 13 respectively, and the limiting block 15 is fixedly connected to the outer wall of the latch 14 .

[0028] The positions and sizes of the plug hole 12 and the air hole 13 are adapted to each other, and the latch 14 can block the rotation of the hand wheel controller 5 while preventing the air in the air hole 13 from leaking and entering.

[0029] Furthermore, the limiting structure includes a connecting block 16, a symmetrically distributed first groove 17, a sliding hole 18, a second spring 19, a limiting rod 20, a socket 21, a second groove 22, an insert block 23, an arc groove 24, and an adapter block 25. The connecting block 16 is fixedly connected to the outer wall of the cylinder body 1, the first groove 17 is arranged on both sides of the connecting block 16, the sliding hole 18 is arranged on the outer wall of the connecting block 16, one end of the second spring 19 is fixedly connected to the inner wall of the sliding hole 18, the limiting rod 20 is slidably connected to the sliding hole 18, and the socket 21 is arranged on the outer wall of the connecting block 16.

[0030] Among them, the upper part is the connection component 6 in the limiting structure, which is composed of a connection block 16, a second groove 17, a sliding hole 18, a second spring 19, a limiting rod 20, a socket 21, and a second groove 22. As long as it plays a limiting role, it can be quickly disassembled.

[0031] Furthermore, the insert block 23 is fixedly connected to the outer wall of the insert component 7 , the arc groove 24 is provided on the outer wall opposite to the insert block 23 , and the adapter block 25 is fixedly connected to the outer wall of the insert component 7 .

[0032] Among them, the upper part is the insertion component 7 in the limiting structure, which is composed of an insertion block 23, an arc groove 24, and an adapter block 25. The insertion component 7 is connected to the inflatable device. Through the combination of the insertion component 7 and the connecting component 6, the rapid installation and disassembly of the inflatable device can be achieved.

[0033] Furthermore, the position and size of the first groove 17 are adapted to the adapter block 25, the other end of the second spring 19 is fixedly connected to the bottom end of the limiting rod 20, the insert block 23 is slidably connected to the second groove 22, the second groove 22 is arranged on the outer wall of the limiting rod 20, and a hemisphere is provided at the bottom end of the second groove 22, which is adapted to the arc groove 24.

[0034] Among them, the limiting structure is connected by inserting the plug block 23 and the adapter 25 in the insertion component 7 into the first groove 17 and the second groove 22 in the connecting component 6. During the insertion, the plug block 23 squeezes the limiting rod 20 to move downward and squeezes the second spring 19. After the plug block 23 is inserted into the position of the arc groove 24, under the elastic force of the second spring 19, the limiting rod 20 returns to its original position to limit the plug block 23. In this way, the installation is completed. When disassembling, you only need to press the extended end of the limiting column 20 at the same time, so that the limiting rod 20 and the plug block 23 lose the limit and can be disassembled.

[0035] Working principle: When the inflatable device cannot be used, the hand wheel 11 can be rotated to drive the rotating block 10 to rotate, the rotating block 10 drives the screw rod 8 to move up and down, and the screw rod 8 drives the piston 2 and the piston rod 4 to move up and down to realize manual control of the pneumatic actuator. Then, when the inflatable device needs to be connected to the air hole 13, the latch 14 is first taken out, and then the plug block 23 and the adapter 25 in the insertion component 7 are inserted into the first groove 17 and the second groove 22 in the connecting component 6 to connect. While inserting, the plug block 23 squeezes the limit rod 20 to move downward and squeezes the second spring 19. After being inserted into the position of the arc groove 24, under the elastic force of the second spring 19, the limiting rod 20 returns to its original position to limit the insert block 23, thus completing the installation. When disassembling, it is only necessary to press the protruding end of the limiting column 20 at the same time, so that the limiting rod 20 and the insert block 23 lose their limit and can be disassembled, thereby the connection is tighter, and no longer connected by bolts or the like, thereby avoiding damage to the actuator, making it easier to disassemble, lasting longer, and the moving distance of the hand wheel part is shortened, leaving more sufficient space after use, which is more suitable for areas with smaller spaces, and the practicality is greatly increased.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully enclosed overhead handwheel pneumatic actuator, comprising a cylinder body (1), characterized in that: The inner wall of the cylinder body (1) is slidably connected to a piston (2), the top end of the piston (2) is fixedly connected to a slide cylinder (3), the bottom end of the piston (2) is fixedly connected to a piston rod (4), the top end of the piston (2) is connected to a handwheel controller (5) via a manual control structure, the outer wall of the cylinder body (1) is fixedly connected to a connecting component (6), and the connecting component (6) is connected to an insertion component (7) via a limiting structure.

2. The fully enclosed overhead handwheel pneumatic actuator according to claim 1 is characterized in that: The manual control structure comprises a screw rod (8), a first spring (9), a rotating block (10), a hand wheel (11), evenly distributed jacks (12), air holes (13), a latch (14), and a limiting block (15); the bottom end of the screw rod (8) is rotatably connected to the top end of the piston (2); the screw rod (8) is threadedly connected to the outer wall of the slide cylinder (3); one end of the first spring (9) is fixedly connected to the top end of the piston (2); the other end of the first spring (9) is fixedly connected to the top end of the inner wall of the cylinder body (1); the rotating block (10) is rotatably connected to the outer wall of the top end of the slide cylinder (3); the rotating block (10) is threadedly connected to the screw rod (8); and the hand wheel (11) is fixedly connected to the outer wall of the rotating block (10).

3. The fully enclosed overhead handwheel pneumatic actuator according to claim 2 is characterized in that: The insertion hole (12) is arranged on the outer wall of the rotating block (10), the air hole (13) is arranged at the top end of the cylinder body (1), the latch (14) is slidably connected to the insertion hole (12) and the air hole (13), respectively, and the limiting block (15) is fixedly connected to the outer wall of the latch (14).

4. The fully enclosed overhead handwheel pneumatic actuator according to claim 1 is characterized in that: The limiting structure comprises a connecting block (16), a first groove (17) symmetrically distributed, a sliding hole (18), a second spring (19), a limiting rod (20), a socket (21), a second groove (22), an insert block (23), an arc groove (24), and an adapter block (25); the connecting block (16) is fixedly connected to the outer wall of the cylinder body (1); the first groove (17) is arranged on both sides of the connecting block (16); the sliding hole (18) is arranged on the outer wall of the connecting block (16); one end of the second spring (19) is fixedly connected to the inner wall of the sliding hole (18); the limiting rod (20) is slidably connected to the sliding hole (18); and the socket (21) is arranged on the outer wall of the connecting block (16).

5. The fully enclosed overhead handwheel pneumatic actuator according to claim 4, characterized in that: The insert block (23) is fixedly connected to the outer wall of the insert component (7), the arc groove (24) is arranged on the outer wall opposite to the insert block (23), and the adapter block (25) is fixedly connected to the outer wall of the insert component (7).

6. The fully enclosed overhead handwheel pneumatic actuator according to claim 5, characterized in that: The first groove (17) is adapted to the position and size of the adapter block (25); the other end of the second spring (19) is fixedly connected to the bottom end of the limiting rod (20); the plug block (23) is slidably connected to the second groove (22); the second groove (22) is arranged on the outer wall of the limiting rod (20); a hemisphere is provided at the bottom end of the second groove (22); the hemisphere is adapted to the arc groove (24).

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