An actuator for a pneumatic airlock

Abstract

This invention provides an actuator for a pneumatic airlock. An air source supplies compressed air to a telescopic cylinder via an electromagnetic reversing valve. The bottom of the telescopic cylinder is hinged to one side of a frame, and the cylinder rod is hinged to one end of a swing arm. The double-link mechanism includes a first link and a second link, which are linked by a transmission rod. The first link has a first flipping mechanism that rotates synchronously via a link. The second link has a second flipping mechanism that rotates synchronously via a link. The foremost second flipping mechanism is hinged to the other end of the swing arm via a pivot. Adjacent first and second flipping mechanisms drive adjacent airlock blades to rotate in opposite directions. This invention uses a cylinder to drive the swing arm to push and pull, which in turn drives the double-link flipping mechanism to rotate. The cylinder does not need to directly apply push or pull force to the airlock, saving cylinder energy. The airlock blades adopt a double-door design, making the opening and closing performance of the airlock more stable.

Description

Technical Field

[0001] This utility model relates to the field of marine airlock technology, and in particular to an actuator for a pneumatic airlock. Background Technology

[0002] In existing technologies, such as Figure 1 As shown, the conventional structure of the pneumatic airlock in a marine airlock consists of a rotary cylinder 13, an electromagnetic reversing valve, a rotating shaft 14, a connecting rod 15, and an airlock. When the air source supplies compressed air at a certain pressure to the rotary cylinder 13 through the electromagnetic reversing valve, the rotary cylinder 13 drives the central airlock blade 16 to rotate 90º. The central airlock blade 16 then drives the other airlock blades 16 to rotate synchronously by 90º through the connecting rod 15. At this time, the airlock blades 16 are in the fully open state. When the electromagnetic reversing valve cuts off the air supply to the rotary cylinder 13 and the exhaust pipe is opened, the compressed air in the rotary cylinder 13 is discharged. Under the action of the internal return spring, the rotary cylinder 13 drives all the airlock blades 16 to rotate in the opposite direction by 90º, and the airlock is in the closed state.

[0003] The above structure has defects. The wind gate blade 16 needs to be directly rotated by the rotary cylinder 13, which consumes a lot of energy and has a high procurement cost, making it difficult to promote and implement in the field of marine wind gates. Summary of the Invention

[0004] The purpose of this invention is to provide an actuator for a pneumatic airlock, which uses a telescopic cylinder instead of a rotary cylinder. The cylinder drives the swing arm to push and pull, which in turn drives the double-link flipping mechanism to rotate the blades, thus saving energy.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An actuator for a pneumatic airlock includes a telescopic cylinder, an electromagnetic reversing valve, a swing arm, a rotating shaft, and a double-link mechanism. An air source supplies compressed air to the telescopic cylinder through the electromagnetic reversing valve. The bottom of the telescopic cylinder is hinged to one side of a frame. The cylinder rod of the telescopic cylinder is hinged to one end of the swing arm. The double-link mechanism includes a first link and a second link arranged parallel to each other vertically. The first link and the second link are linked by a transmission rod. The first link has several first flipping mechanisms that rotate synchronously through the linkage structure of the first link. The second link has several second flipping mechanisms that rotate synchronously through the linkage structure of the second link. The first and second flipping mechanisms are staggered in the front-rear direction. The foremost second flipping mechanism is hinged to the other end of the swing arm through a rotating shaft. Adjacent first and second flipping mechanisms drive adjacent airlock blades to rotate in opposite directions.

[0007] Furthermore, when the cylinder rod is pushed out to its limit position, the adjacent damper blades open at 90°; when the cylinder rod is retracted to its limit position, the adjacent damper blades close.

[0008] Furthermore, the telescopic cylinder and the swing arm are located on the outside of the frame, the double linkage mechanism is located on the inside of the frame, and the rotating shaft passes through the side of the frame in the left-right direction.

[0009] Furthermore, a cylinder mounting seat is fixedly provided on one side of the frame, and a connecting piece protrudes from the bottom of the telescopic cylinder. The front end of the cylinder mounting seat and the connecting piece are hinged together by a cylinder mounting shaft.

[0010] Compared with the previous structure, the improved actuator of this utility model has the following advantages:

[0011] The cylinder drives the swing arm to push and pull, which in turn drives the double-link flipping mechanism to rotate. The cylinder does not need to apply push and pull force directly to the air brake, saving the cylinder's energy consumption.

[0012] Telescopic cylinders replaced rotary cylinders, reducing manufacturing costs;

[0013] The damper blades adopt a double-door design, which can be reused repeatedly while maintaining alignment and is not prone to angular deviation, resulting in more stable opening and closing performance of the damper. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a pneumatic airlock in the prior art.

[0015] Figure 1 The labels in the attached figures are as follows:

[0016] 13 Rotary cylinder, 14 Rotary shaft, 15 Connecting rod, 16 Air damper blade;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 2 , Figure 3 The labels in the attached figures are as follows:

[0020] 1. Telescopic cylinder, 2. Swing arm, 3. Rotary shaft, 4. Frame, 5. Cylinder rod, 6. Connecting parts;

[0021] 7 First link, 8 Second link, 9 First flipping mechanism, 10 Second flipping mechanism;

[0022] 11. Air damper blades, 12. Cylinder mounting base. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] This embodiment discloses an actuator for a pneumatic airlock, such as... Figure 2 As shown, the device includes a telescopic cylinder 1, an electromagnetic reversing valve, a swing arm 2, a rotating shaft 3, and a double linkage mechanism. The air source supplies compressed air to the telescopic cylinder 1 through the electromagnetic reversing valve. The bottom of the telescopic cylinder 1 is hinged to one side of the frame 4. The cylinder rod 5 of the telescopic cylinder 1 is hinged to one end of the swing arm 2. A cylinder mounting seat 12 is fixedly provided on one side of the frame 4. A connecting piece 6 protrudes from the bottom of the telescopic cylinder 1. The front end of the cylinder mounting seat 12 and the connecting piece 6 are hinged through the cylinder mounting rotating shaft. The telescopic cylinder 1 and the swing arm 2 are both located on the outside of the frame 4.

[0025] like Figure 3 As shown, the double linkage mechanism is located inside the frame 4. The double linkage mechanism includes a first linkage 7 and a second linkage 8 arranged in parallel. The first linkage 7 and the second linkage 8 are linked by a transmission rod. The first linkage 7 is provided with three first flipping mechanisms 9, which rotate synchronously through the linkage structure of the first linkage 7. The second linkage 8 is provided with three second flipping mechanisms 10, which rotate synchronously through the linkage structure of the second linkage 8.

[0026] like Figure 3 As shown, three first flipping mechanisms 9 and three second flipping mechanisms 10 are staggered in the front-to-back direction. The foremost second flipping mechanism 10 is hinged to the other end of the swing arm 2 via a pivot 3. The pivot 3 passes through the side of the frame 4 in the left-to-right direction. Adjacent first flipping mechanisms 9 and second flipping mechanisms 10 drive two adjacent windshield blades 11 to rotate in opposite directions.

[0027] When the cylinder rod 5 is pushed out to the limit position, the adjacent damper blades 11 open to each other at 90°; when the cylinder rod 5 is retracted to the limit position, the adjacent damper blades 11 rotate to the level position and close to each other.

[0028] When the actuator in this embodiment is in use, the air source supplies compressed air at a certain pressure to the telescopic cylinder 1 through the electromagnetic reversing valve. The cylinder rod 5 of the telescopic cylinder 1 pushes out and drives the rotating shaft 3 to rotate through the swing arm 2. The double linkage mechanism drives the windshield blades 11 to open 90º, at which time the windshield is in the fully open state.

[0029] Then the electromagnetic reversing valve supplies air to the cylinder in the opposite direction, the cylinder rod 5 of the telescopic cylinder 1 retracts, and the swing arm 2 pulls the rotating shaft 3 to rotate, which in turn drives the windshield blade 11 to rotate 90º in the opposite direction by the double linkage mechanism. At this time, the windshield is in the closed state.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An actuator for a pneumatic damper, characterized in that, The system includes a telescopic cylinder (1), an electromagnetic reversing valve, a swing arm (2), a rotating shaft (3), and a double-link mechanism. An air source supplies compressed air to the telescopic cylinder (1) through the electromagnetic reversing valve. The bottom of the telescopic cylinder (1) is hinged to one side of the frame (4). The cylinder rod (5) of the telescopic cylinder (1) is hinged to one end of the swing arm (2). The double-link mechanism includes a first link (7) and a second link (8) arranged parallel to each other vertically. The first link (7) and the second link (8) are linked by a transmission rod. The first link (7) is equipped with several first flipping mechanisms (9). The first flipping mechanism (9) rotates synchronously through the linkage structure of the first link (7). The second link (8) is provided with several second flipping mechanisms (10). The second flipping mechanisms (10) rotate synchronously through the linkage structure of the second link (8). The first flipping mechanism (9) and the second flipping mechanism (10) are staggered in the front-back direction. The frontmost second flipping mechanism (10) is hinged to the other end of the swing arm (2) through the pivot (3). The adjacent first flipping mechanism (9) and the second flipping mechanism (10) drive the adjacent wind gate blade (11) to rotate in the opposite direction.

2. The actuator of the pneumatic damper according to claim 1, characterized in that, When the cylinder rod (5) is pushed out to the limit position, the adjacent damper blades (11) open at 90°; when the cylinder rod (5) is retracted to the limit position, the adjacent damper blades (11) close.

3. The actuator of the pneumatic damper according to claim 1, characterized in that, The telescopic cylinder (1) and the swing arm (2) are located on the outside of the frame (4), the double linkage mechanism is located on the inside of the frame (4), and the rotating shaft (3) passes through the side of the frame (4) in the left-right direction.

4. The actuator of the pneumatic damper according to claim 1, characterized in that, A cylinder mounting seat (12) is fixedly provided on one side of the frame (4), and a connector (6) protrudes from the bottom of the telescopic cylinder (1). The front end of the cylinder mounting seat (12) and the connector (6) are hinged through a cylinder mounting shaft.

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