Novel pneumatic diaphragm actuator

Abstract

The utility model provides a novel pneumatic diaphragm actuator which comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected and arranged in a sealed mode, a first air port is formed in the top of the upper shell, a second air port is formed in the bottom of the lower shell, a pneumatic diaphragm assembly is arranged between the upper shell and the lower shell, and the pneumatic diaphragm assembly is connected with the upper shell. The bottom of the pneumatic film assembly is fixedly connected with a trigger plate, the bottom of the trigger plate is fixedly connected with a movable shaft, the movable shaft is slidably connected to the lower shell, and the bottom of the lower shell is fixedly connected with a mounting frame. And the first air port and the second air port are used for exhausting the other air when one air is inflated, so that the control efficiency of the movable shaft is improved. According to the novel pneumatic diaphragm actuator, due to the arrangement of the threaded sleeve and the threaded section of the movable shaft, movement of the movable shaft can be controlled through the rotating handle, and the actuator can be normally used when no air source exists or the air source breaks down.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic actuators, in particular to a novel pneumatic film actuator. Background Art

[0002] A pneumatic diaphragm actuator is a device that uses compressed air as a power source and drives the movement of the rod through the action of air pressure on the diaphragm. It is mainly used for opening and closing or adjusting valves in industrial control systems. Pneumatic diaphragm actuators are widely used in the chemical, petroleum, metallurgy, electric power and other industries due to their simple structure, fast response speed, high reliability and wide range of applications.

[0003] The working principle of a pneumatic diaphragm actuator is that when compressed air enters the air chamber of the actuator, the air pressure acts on the diaphragm, causing the diaphragm to deform and push the rod, thereby opening, closing or precisely adjusting the valve. However, pneumatic diaphragm actuators are highly dependent on the air source to operate. If there is no air source or the air source fails, the operation of the actuator will be hindered.

[0004] In view of this, a new type of pneumatic diaphragm actuator is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the traditional novel pneumatic diaphragm actuator is too dependent on the air source, and to provide a novel pneumatic diaphragm actuator.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a new pneumatic diaphragm actuator, comprising an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected and sealed, a first air port is opened at the top of the upper shell, a second air port is opened at the bottom of the lower shell, a pneumatic diaphragm assembly is arranged between the upper shell and the lower shell, the bottom of the pneumatic diaphragm assembly is fixedly connected to a trigger plate, the bottom of the trigger plate is fixedly connected to a movable shaft, the movable shaft is slidably connected to the lower shell, the bottom of the lower shell is fixedly connected to a mounting bracket, the bottom of the movable shaft is arranged through the mounting bracket, the first air port and the second air port are used to exhaust one of them when the other is inflated to improve the control efficiency of the movable shaft.

[0007] Preferably, the pneumatic diaphragm assembly includes a diaphragm body fixedly connected to the upper shell and the lower shell, and a plurality of springs are fixedly connected to the top of the diaphragm body, one end of the plurality of springs is fixedly connected to the diaphragm body, and the other end of the plurality of springs is fixedly connected to the upper shell, and the pneumatic diaphragm assembly is used to drive the movable axis to move upward or downward through the trigger plate.

[0008] Preferably, the bottom of the lower shell is rotationally connected with a rotating rod, a sleeve is rotationally connected with the rotating rod, a threaded section is arranged in the middle of the movable shaft, and the threaded section is threadedly connected with the sleeve.

[0009] Preferably, the top of the sleeve is fixedly connected with a rotating block, and a rotating groove for the rotating block to rotate is arranged on the rotating rod.

[0010] Preferably, the bottom of the sleeve is fixedly connected with a first bevel gear, a second bevel gear is meshingly connected with the first bevel gear, the second bevel gear is arranged in a staggered manner with the first bevel gear, a control rod is rotationally connected with the mounting frame, one end of the control rod is fixedly connected with the second bevel gear, and the other end of the control rod is fixedly connected with a rotating handle.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The novel pneumatic film actuator provided by the utility model can control the movement of the movable shaft through the rotating handle, so that the actuator can be normally used when there is no gas source or the gas source fails.

[0013] 2. The novel pneumatic film actuator provided by the utility model can prevent the operation of manually controlling the movable shaft from affecting the sealing property of the actuator, and will not affect the subsequent pneumatic control through the arrangement of the rotating handle at the bottom of the device.

[0014] 3. The novel pneumatic film actuator provided by the utility model can enhance the control over the film body in the mode that one of the gas ports is inflated while the other is exhausted or one of the gas ports is exhausted while the other is inflated, so that the movement of the movable shaft is more convenient through the pneumatic film assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification provide further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model.

[0016] In the drawings:

[0017] Figure 1 It is a perspective structural schematic view of one embodiment of the utility model.

[0018] Figure 2 It is an internal structural schematic view of the actuator of one embodiment of the utility model.

[0019] Figure 3 It is a bottom view of the perspective structure of one embodiment of the utility model.

[0020] Figure 4 This is a diagram showing the positional relationship between the pneumatic diaphragm assembly and the rotating rod according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic cross-sectional view of the movable shaft and the first bevel gear according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Upper shell, 2. Lower shell, 3. Pneumatic diaphragm assembly, 31. Spring, 32. Diaphragm body, 4. Movable shaft, 5. Trigger plate, 6. First air port, 7. Second air port, 8. Mounting bracket, 9. Rotating rod, 10. Threaded section, 11. Screw sleeve, 12. Rotating block, 13. Rotating groove, 14. First bevel gear, 15. Second bevel gear, 16. Control lever, 17. Turning handle. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5 .

[0026] The utility model discloses a new pneumatic diaphragm actuator, including an upper shell 1 and a lower shell 2, which are fixedly connected and sealed between the upper shell 1 and the lower shell 2. A first air port 6 is provided at the top of the upper shell 1, and a second air port 7 is provided at the bottom of the lower shell 2. A pneumatic diaphragm assembly 3 is provided between the upper shell 1 and the lower shell 2. The bottom of the pneumatic diaphragm assembly 3 is fixedly connected with a trigger plate 5, and the bottom of the trigger plate 5 is fixedly connected with a movable shaft 4. The movable shaft 4 is slidably connected to the lower shell 2, and the bottom of the lower shell 2 is fixedly connected with a mounting bracket 8. The bottom of the movable shaft 4 is arranged through the mounting bracket 8. The first air port 6 and the second air port 7 are used to inflate one of them and exhaust the other to improve the control efficiency of the movable shaft 4. Specifically, when the first air port 6 is inflated and the second air port 7 is exhausted, the diaphragm body 32 can be controlled to move downward more quickly. When the first air port 6 is exhausted and the second air port 7 is inflated, the diaphragm body 32 can be moved upward more quickly. This arrangement can make the movement of the movable shaft 4 more sensitive.

[0027] In addition, the pneumatic diaphragm assembly 3 includes a diaphragm body 32 fixedly connected to the upper shell 1 and the lower shell 2, and a plurality of springs 31 are fixedly connected to the top of the diaphragm body 32. One end of the plurality of springs 31 is fixedly connected to the diaphragm body 32, and the other end of the plurality of springs 31 is fixedly connected to the upper shell 1. The pneumatic diaphragm assembly 3 is used to drive the movable shaft 4 to move upward or downward through the trigger plate 5.

[0028] In addition, the bottom of the lower shell 2 is rotatably connected to a rotating rod 9, and a screw sleeve 11 is rotatably connected to the rotating rod 9. A threaded section 10 is provided in the middle of the movable shaft 4, and the threaded section 10 is threadedly connected to the screw sleeve 11. The screw sleeve 11 is used to move the movable shaft 4 upward or downward when rotating. Figure 5 As shown, the middle part of the rotating rod 9 is hollow, the top of the rotating rod 9 is rotatably connected to the lower shell 2, the top of the movable shaft 4 is slidably connected to the lower shell 2, and the bottom of the movable shaft 4 is slidably connected to the mounting bracket 8, so the rotating rod 9 can also be limited in the horizontal direction.

[0029] Furthermore, a rotating block 12 is fixedly connected to the top of the screw sleeve 11, and a rotating groove 13 for rotating the rotating block 12 is provided on the rotating rod 9. That is to say, the screw sleeve 11 is threadedly connected to the threaded segment 10 and rotationally connected to the rotating rod 9. Therefore, when the screw sleeve 11 rotates, the threaded segment 10 will drive the movable shaft 4 to move upward or downward.

[0030] Secondly, a first bevel gear 14 is fixedly connected to the bottom of the screw sleeve 11, and a second bevel gear 15 is meshed with the first speed wheel. The second bevel gear 15 and the first bevel gear 14 are staggered. A control rod 16 is rotatably connected to the mounting frame 8. One end of the control rod 16 is fixedly connected to the second bevel gear 15, and the other end of the control rod 16 is fixedly connected to the turning handle 17. It should be noted that when the movable shaft 4 is controlled to move up and down through the first air port 6 and the second air port 7, the turning handle 17 will also rotate accordingly. This setting will not affect the normal use of the device.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A new type of pneumatic diaphragm actuator, characterized by: The invention comprises an upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) are fixedly connected and sealed, a first air port (6) is provided at the top of the upper shell (1), and a second air port (7) is provided at the bottom of the lower shell (2), a pneumatic film assembly (3) is provided between the upper shell (1) and the lower shell (2), a trigger plate (5) is fixedly connected at the bottom of the pneumatic film assembly (3), a movable shaft (4) is fixedly connected at the bottom of the trigger plate (5), and the movable shaft (4) is slidably connected to the lower shell (2), a mounting frame (8) is fixedly connected at the bottom of the lower shell (2), and the bottom of the movable shaft (4) passes through the mounting frame (8), and the first air port (6) and the second air port (7) are used for one to be inflated while the other is exhausted to improve the control efficiency of the movable shaft (4).

2. The novel pneumatic diaphragm actuator according to claim 1, characterized in that: The pneumatic film assembly (3) includes a film body (32) fixedly connected to the upper shell (1) and the lower shell (2), a plurality of springs (31) are fixedly connected to the top of the film body (32), one end of the plurality of springs (31) is fixedly connected to the film body (32), and the other end of the plurality of springs (31) is fixedly connected to the upper shell (1), and the pneumatic film assembly (3) is used to drive the movable shaft (4) to move upward or downward through the trigger plate (5).

3. The novel pneumatic diaphragm actuator according to claim 2, characterized in that: The bottom of the lower shell (2) is rotatably connected to a rotating rod (9), and a screw sleeve (11) is rotatably connected to the rotating rod (9). A threaded section (10) is provided in the middle of the movable shaft (4), and the threaded section (10) is threadedly connected to the screw sleeve (11). The screw sleeve (11) is used to move the movable shaft (4) upward or downward when rotating.

4. The novel pneumatic diaphragm actuator according to claim 3, characterized in that: A rotating block (12) is fixedly connected to the top of the screw sleeve (11), and a rotating groove (13) for rotating the rotating block (12) is provided on the rotating rod (9).

5. The novel pneumatic diaphragm actuator according to claim 4, characterized in that: The bottom of the screw sleeve (11) is fixedly connected to a first bevel gear (14), the first bevel gear is meshed with a second bevel gear (15), the second bevel gear (15) and the first bevel gear (14) are staggered, and the mounting frame (8) is rotatably connected to a control rod (16), one end of the control rod (16) is fixedly connected to the second bevel gear (15), and the other end of the control rod (16) is fixedly connected to a turning handle (17).

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