Pneumatic actuator with remarkable sealing effect

Abstract

The pneumatic actuator with the remarkable sealing effect comprises an actuator body and a connector arranged at the end of the actuator body, the connector is connected with an end cover, a sealing gasket, a first sealing face and a second sealing face are arranged on the inner side of the end cover, the first sealing face and the second sealing face are oppositely distributed, and the sealing gasket is connected with the connector. The outer side of the end cover is connected with a plurality of connecting plates, the connecting plates are matched with limiting seats connected to the outer sides of the connecting openings, and the limiting seats are connected with positioning mechanisms used for positioning the connecting plates. The connecting tightness of the end cover and the actuator body can be improved, the sealing gasket, the first sealing face and the second sealing face are used in cooperation, the multi-sealing effect is achieved, gas leakage is prevented, using is safe and reliable, finally, the rotating ring is locked and positioned through the connecting piece, the positioning head is prevented from loosening, a traditional connecting mode through multiple bolts is replaced, and using is convenient. Operation is time-saving and labor-saving, and flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic actuators, in particular to a pneumatic actuator with significant sealing effect. Background Art

[0002] The actuator is an indispensable and important component of the valve. Generally, actuators are divided into three categories: pneumatic, hydraulic and electric. Pneumatic actuators use compressed air as energy. They are characterized by simple structure, reliable and stable operation, large output thrust, easy maintenance, fire and explosion resistance, and low price.

[0003] When assembling existing pneumatic actuators, multiple bolts are usually used to connect the end cover to the actuator body, and a sealing ring is used to achieve a sealing effect. After long-term use, the sealing ring will age, which will lead to leakage hazards and affect the use of the actuator. Utility Model Content

[0004] The purpose of the utility model is to provide a pneumatic actuator with significant sealing effect, which has the advantages of achieving multiple sealing effects, preventing gas leakage, and being safe and reliable to use, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic actuator with significant sealing effect, comprising an actuator body and a connecting port arranged at the end of the actuator body, the connecting port being connected to an end cover, the inner side of the end cover being provided with a sealing gasket, a sealing surface one, and a sealing surface two, the sealing surface one and the sealing surface two being relatively distributed, the outer side of the end cover being connected to a plurality of connecting plates, the connecting plates being matched with a limit seat connected to the outer side of the connecting port, the limit seat being connected to a positioning mechanism for positioning the connecting plates.

[0006] Preferably, an annular groove is provided in the end cover, and the annular groove matches the sealing gasket.

[0007] Preferably, the first sealing surface and the second sealing surface are both inclined.

[0008] Preferably, the positioning mechanism includes a rotating ring, a plurality of positioning heads, a plurality of anti-slip protrusions, and a connecting piece, the positioning head is connected to one side of the rotating ring, the rotating ring is rotatably connected to the connecting port, the anti-slip protrusion is connected to the outside of the rotating ring, the connecting piece is used to position the rotating ring, and the positioning head matches the positioning groove provided on the connecting plate.

[0009] Preferably, a connecting groove is provided at the end of the actuator body, and the end of the connecting member is connected to the connecting groove.

[0010] Preferably, the connecting member is a common bolt, and the connecting member is threadedly connected to the connecting groove.

[0011] Preferably, a guide groove is provided on the outer side of the connecting port, a plurality of sliding blocks are slidably connected to the guide groove, and the sliding blocks are fixedly connected to the rotating ring.

[0012] Preferably, the connecting plate is an L-shaped plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a positioning mechanism, which can drive the rotating ring to rotate, and then drive multiple positioning heads to rotate, so that the positioning heads are pressed tightly against the positioning grooves, and tension is applied to the connecting plate, so that the end cover is pressed tightly against the connecting port, thereby improving the tightness of the connection between the two. Combined with the use of sealing gaskets, sealing surface one, and sealing surface two, multiple sealing effects are achieved to prevent gas leakage, and the use is safe and reliable. Finally, the rotating ring is locked and positioned using a connecting piece to prevent the positioning heads from loosening, replacing the traditional connection method using multiple bolts, which saves time and effort and has high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the connection structure between the end cover and the connection port of the utility model;

[0017] Figure 4 for Figure 3 A local map of

[0018] Figure 5 This is a schematic diagram of the end cover structure of the present utility model.

[0019] In the figure: 1. Actuator body; 2. End cover; 3. Connection port; 4. Rotating ring; 5. Connecting plate; 6. Connecting piece; 7. Connecting groove; 8. Limit seat; 9. Positioning groove; 10. Positioning head; 11. Anti-slip protrusion; 12. Annular groove; 13. Sealing gasket; 14. Sealing surface 1; 15. Sealing surface 2; 16. Sliding block; 17. Guide groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 5The utility model provides a pneumatic actuator with significant sealing effect, including an actuator body 1 and a connecting port 3 arranged at the end of the actuator body 1, the connecting port 3 is connected to the end cover 2, and the inner side of the end cover 2 is provided with a sealing gasket 13, a sealing surface 14, and a sealing surface 2 15, and the sealing surface 14 and the sealing surface 2 15 are relatively distributed. When the assembly is completed, the end cover 2 is pressed against the connecting port 3, and the use of the sealing gasket 13, the sealing surface 14, and the sealing surface 2 15 is used to achieve multiple sealing effects and avoid the hidden danger of gas leakage. The outer side of the end cover 2 is connected to a plurality of connecting plates 5, and the connecting plates 5 are L-shaped plates, and the connecting plates 5 match the limiting seat 8 connected to the outer side of the connecting port 3, and the limiting seat 8 is connected to a positioning mechanism for positioning the connecting plates 5. When installing the end cover 2, the connecting plate 5 is inserted into the limiting seat 8 to achieve preliminary positioning of the end cover 2, which is convenient for subsequent locking of the connecting plate 5.

[0022] An annular groove 12 is provided in the end cover 2 , and the annular groove 12 matches the sealing gasket 13 and can limit the position of the sealing gasket 13 .

[0023] The first sealing surface 14 and the second sealing surface 15 are both inclined, with an angle of 30° to 40° with the horizontal.

[0024] The positioning mechanism includes a rotating ring 4, multiple positioning heads 10, multiple anti-slip protrusions 11, and a connector 6. The positioning head 10 is connected to one side of the rotating ring 4, which is rotatably connected to the connecting port 3. The anti-slip protrusions 11 are connected to the outside of the rotating ring 4. The anti-slip protrusions 11 increase the friction with the hand, making it easier to operate the rotating ring 4. The connector 6 is used to position the rotating ring 4. The positioning heads 10 match the positioning slots 9 provided on the connecting plate 5. The rotatable rotating ring 4 drives the multiple positioning heads 10 to rotate synchronously, causing the positioning heads 10 to move toward the corresponding positioning slots 9. The positioning heads 10 gradually press against the positioning slots 9, applying a pulling force to the connecting plate 5 toward the actuator body 1, pressing the end cover 2 against the connecting port 3, improving the tightness of the connection between the two and making operation simple and convenient.

[0025] A connecting groove 7 is provided at the end of the actuator body 1. A connecting member 6 is a conventional bolt, threadedly connected to the connecting groove 7. When the rotating ring 4 rotates a certain angle, the rotating connecting member 6 mates with the connecting groove 7, locking the rotating ring 4. This prevents rotational loosening that could affect the stability of the connection between the positioning head 10 and the connecting plate 5, and avoids the potential loosening of the end cap 2.

[0026] A guide groove 17 is provided on the outer side of the connecting port 3, and a plurality of sliding blocks 16 are slidably connected to the guide groove 17. The sliding blocks 16 are fixedly connected to the rotating ring 4. When the rotating ring 4 is rotated, the sliding blocks 16 slide in the guide groove 17, thereby improving the rotation stability of the rotating ring 4 and facilitating the precise docking of the positioning head 10 with the positioning groove 9.

[0027] Working Principle: When assembling the pneumatic actuator, insert the connecting plate 5 into the corresponding limiting seat 8 to initially limit the end cover 2. Rotating the rotating ring 4 then drives the multiple positioning heads 10 to rotate, pressing the positioning heads 10 against the positioning grooves 9. This in turn applies a pulling force toward the actuator body 1 to the connecting plate 5, pressing the end cover 2 against the connecting port 3, improving the tightness of the connection between the two. Combined with the use of the sealing gasket 13, sealing surface 14, and sealing surface 2 15, a multiple sealing effect is achieved to avoid the risk of gas leakage. Finally, the connecting piece 6 is used to position the rotating ring 4 to prevent it from rotating loose, affecting the stability of the connection between the positioning heads 10 and the positioning grooves 9, and preventing the end cover 2 from loosening. When the sealing gasket 13 is aged and needs to be replaced, use a tool to loosen the connector 6. At this time, the rotating ring 4 is in a relaxed state. Then, the rotating ring 4 is rotated to drive the multiple positioning heads 10 to rotate, so that the positioning heads 10 are separated from the positioning grooves 9, thereby loosening the end cover 2 and facilitating the disassembly of the end cover 2, thereby making it convenient to replace the sealing gasket 13 and having strong practicality.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic actuator with a significant sealing effect, comprising an actuator body (1) and a connection port (3) provided at an end of the actuator body (1), wherein the connection port (3) is connected to an end cover (2), and is characterized in that: The inner side of the end cover (2) is provided with a sealing gasket (13), a sealing surface 1 (14), and a sealing surface 2 (15), wherein the sealing surface 1 (14) and the sealing surface 2 (15) are arranged relative to each other. The outer side of the end cover (2) is connected to a plurality of connecting plates (5), wherein the connecting plates (5) match the limiting seat (8) connected to the outer side of the connecting port (3), and the limiting seat (8) is connected to a positioning mechanism for positioning the connecting plates (5).

2. A pneumatic actuator with significant sealing effect according to claim 1, characterized in that: An annular groove (12) is provided in the end cover (2), and the annular groove (12) matches the sealing gasket (13).

3. A pneumatic actuator with significant sealing effect according to claim 1, characterized in that: The sealing surface 1 (14) and the sealing surface 2 (15) are both arranged at an inclination.

4. A pneumatic actuator with significant sealing effect according to claim 1, characterized in that: The positioning mechanism comprises a rotating ring (4), a plurality of positioning heads (10), a plurality of anti-slip protrusions (11), and a connecting piece (6), wherein the positioning head (10) is connected to one side of the rotating ring (4), the rotating ring (4) is rotatably connected to the connecting port (3), the anti-slip protrusions (11) are connected to the outer side of the rotating ring (4), the connecting piece (6) is used for positioning the rotating ring (4), and the positioning head (10) matches the positioning groove (9) provided on the connecting plate (5).

5. A pneumatic actuator with significant sealing effect according to claim 4, characterized in that: A connecting groove (7) is provided at the end of the actuator body (1), and the end of the connecting member (6) is connected to the connecting groove (7).

6. A pneumatic actuator with significant sealing effect according to claim 5, characterized in that: The connecting member (6) is a common bolt, and the connecting member (6) is threadedly connected to the connecting groove (7).

7. A pneumatic actuator with significant sealing effect according to claim 4, characterized in that: A guide groove (17) is provided on the outer side of the connection port (3), and a plurality of sliding blocks (16) are slidably connected to the guide groove (17), and the sliding blocks (16) are fixedly connected to the rotating ring (4).

8. The pneumatic actuator with significant sealing effect according to claim 1, characterized in that: The connecting plate (5) is an L-shaped plate.

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