CN214662397U - Pneumatic angular travel actuator capable of automatically keeping position in opening and closing process - Google Patents
Pneumatic angular travel actuator capable of automatically keeping position in opening and closing process Download PDFInfo
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- CN214662397U CN214662397U CN202121168911.7U CN202121168911U CN214662397U CN 214662397 U CN214662397 U CN 214662397U CN 202121168911 U CN202121168911 U CN 202121168911U CN 214662397 U CN214662397 U CN 214662397U
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Abstract
The utility model relates to a switch in-process can protect pneumatic angle stroke executor of position by oneself belongs to pneumatic executor technical field. It comprises an actuator main cylinder body and other conventional structures; the left short body of the actuator, the right short body of the actuator and the limiting mechanism are also included; the left side of the actuator main cylinder body is connected with the left short body of the actuator, and the right side of the actuator main cylinder body is connected with the right short body of the actuator; limiting mechanisms are arranged in the actuator left short body and the actuator right short body, and the limiting of the rack piston is realized through the limiting mechanisms; and the two ends of the left short body and the right short body of the actuator are connected with the end cover of the actuator. The utility model discloses an increase the locating part and realized that the valve is opening the in-process, need the short time not state of opening completely of keeping to accurate control medium passes through the valve and its continuous pipeline, after the medium volume that passes through reaches the requirement, opens the function of valve completely again, and its operation is smooth, and the structure is accurate, possesses extremely strong industrialization and worth.
Description
Technical Field
The utility model relates to a switch in-process can protect pneumatic angle stroke executor of position by oneself belongs to pneumatic executor technical field.
Background
The pneumatic angular travel actuator is a pneumatic product for controlling the opening and closing of a valve, and the principle is that pressure gas pushes a rack piston inside the angular travel pneumatic actuator to do linear motion, so that a driving shaft is driven to rotate, and the valve plate of the valve rotates by 90 degrees. In the working process of the pneumatic angular travel actuator, the rack piston can linearly move towards the outer side or the inner side, and the movement can be stopped when the rack piston meets mechanical limit, so that the pneumatic angular travel actuator only has two working states of opening and closing.
In the actual use process of the valve, a use requirement exists, namely the valve needs to be kept in an incomplete opening state for a short time in the opening process so as to accurately control the medium to pass through the valve and a pipeline connected with the valve, and the valve is completely opened after the volume of the medium passing through meets the requirement. The existing pneumatic angular travel actuator structure cannot well realize the function due to the lack of a necessary limiting device.
Disclosure of Invention
The utility model aims at overcoming above-mentioned weak point, providing a switch in-process can be by oneself protect the pneumatic angle stroke executor of position, it can realize keeping the function of the state of not opening completely in the valve is opened.
The technical scheme of the utility model is that a pneumatic angle stroke actuator capable of automatically keeping position in the opening and closing process comprises an actuator main cylinder body, a rack piston, a driving shaft, an actuator end cover, an actuator opening air inlet and an actuator closing air inlet;
a driving shaft is arranged in the actuator main cylinder body and is meshed and connected with the rack pistons on the two sides; actuator end covers are arranged on two sides of the actuator main cylinder body; the outside of the actuator main cylinder body is provided with an actuator opening air inlet and an actuator closing air inlet, and the movement of the rack piston is controlled through the actuator opening air inlet and the actuator closing air inlet;
the left short body of the actuator, the right short body of the actuator and the limiting mechanism are also included; the left side of the actuator main cylinder body is connected with the left short body of the actuator, and the right side of the actuator main cylinder body is connected with the right short body of the actuator; limiting mechanisms are arranged in the actuator left short body and the actuator right short body, and the limiting of the rack piston is realized through the limiting mechanisms; and the two ends of the left short body and the right short body of the actuator are connected with the end cover of the actuator.
Furthermore, the actuator left short body and the actuator right short body are fixedly connected with the actuator main cylinder body through bolts.
Further, the limiting mechanism specifically comprises an air chamber isolation stop block, an angle limiting piston and an angle limiting nut; air chamber isolation stop blocks are embedded between the actuator left short body and the actuator right short body and the actuator main cylinder body; an angle limiting piston is arranged on one side, which is not adjacent to the actuator main cylinder body, of the air chamber isolation stop block; and an angle limiting nut is arranged at the far end of the angle limiting piston away from the rack piston.
Further, the angle limiting piston specifically comprises an inner piston rod, an outer piston rod and a flange; the flange is connected with the left short body of the actuator and the inner shell of the right short body of the actuator in a sliding way; an inner piston rod and an outer piston rod which are connected with each other are fixed in the center of the flange; the inner piston rod points to the rack piston, and the outer piston rod points to the end cover of the actuator; the inner side piston rod is connected with the air chamber isolation stop block in a sliding mode.
Further, the inner piston rod and the outer piston rod are in threaded connection.
Furthermore, the end part of the outer side piston rod is provided with threads, and the angle limiting nut is in threaded connection with the outer side piston rod.
Further, the air conditioner also comprises a working air inlet and a working stopping air inlet; and the shell of the left short body of the actuator and the shell of the right short body of the actuator are both provided with a working starting air inlet hole and a working stopping air inlet hole, and the movement of the angle limiting piston is controlled by air flow.
Further, the device also comprises an outer sealing cover; the end cover of the actuator is connected with the outer side sealing cover; one end of the outside piston rod, which is in threaded connection with the angle limiting nut, can move in the outside sealing cover.
Further, the air chamber isolation stop block is connected with the inner side piston rod in a sliding mode through a sealing piece; the air chamber isolation baffle block isolates the actuator main cylinder body, the actuator left short body and the actuator right short body into a closed air chamber, so that the rack pistons on two sides move in the closed air chamber.
The utility model has the advantages that: the utility model discloses an increase the locating part and realized that the valve is opening the in-process, need the short time not state of opening completely of keeping to accurate control medium passes through the valve and its continuous pipeline, after the medium volume that passes through reaches the requirement, opens the function of valve completely again, and its operation is smooth, and the structure is accurate, possesses extremely strong industrialization and worth.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front view of the structure of the present invention.
Fig. 3 is a structural sectional view of the present invention.
Description of reference numerals: 1. an actuator master cylinder; 2. a rack piston; 3. a drive shaft; 4. an actuator end cap; 5. the actuator is opened to the air inlet; 6. the actuator closes the air inlet; 7. a short left body of the actuator; 8. the actuator right short body; 9. a limiting mechanism; 91. a gas chamber isolation stop block; 92. an angle limit piston; 921. an inner piston rod; 922. an outer piston rod; 923. a flange; 93. an angle limit nut; 10. starting to work the air inlet; 11. stopping working of the air inlet; 12. and an outer sealing cover.
Detailed Description
As shown in fig. 1-3, a pneumatic angular travel actuator capable of automatically keeping position in the opening and closing process comprises an actuator main cylinder body 1, a rack piston 2, a driving shaft 3, an actuator end cover 4, an actuator opening air inlet 5 and an actuator closing air inlet 6;
a driving shaft 3 is arranged in the actuator main cylinder body 1, and the driving shaft 3 is meshed with the rack pistons 2 on the two sides; the two sides of the actuator main cylinder body 1 are provided with actuator end covers 4; an actuator opening air inlet 5 and an actuator closing air inlet 6 are arranged outside the actuator main cylinder body 1, and the movement of the rack piston 2 is controlled through the actuator opening air inlet 5 and the actuator closing air inlet 6;
the device also comprises an actuator left short body 7, an actuator right short body 8 and a limiting mechanism 9; the left side of the actuator main cylinder body 1 is connected with an actuator left short body 7, and the right side of the actuator main cylinder body is connected with an actuator right short body 8; the actuator left short body 7 and the actuator right short body 8 are both internally provided with a limiting mechanism 9, and the limiting of the rack piston 2 is realized through the limiting mechanisms 9; and the two ends of the actuator left short body 7 and the actuator right short body 8 are connected with the actuator end cover 4.
And the actuator left short body 7 and the actuator right short body 8 are fixedly connected with the actuator main cylinder body 1 through bolts.
The limiting mechanism 9 specifically comprises an air chamber isolation stop block 91, an angle limiting piston 92 and an angle limiting nut 93; air chamber isolation stop blocks 91 are embedded between the actuator left short body 7 and the actuator right short body 8 and the actuator main cylinder body 1; an angle limiting piston 92 is arranged on one side, which is not adjacent to the actuator main cylinder body 1, of the air chamber isolation block 91; an angle limiting nut 93 is arranged at the far end of the angle limiting piston 92 away from the rack piston 2.
The angle limiting piston 92 specifically comprises an inner side piston rod 921, an outer side piston rod 922 and a flange 923; the flange 923 is connected with the inner shells of the left short body 7 and the right short body 8 of the actuator in a sliding way; an inner piston rod 921 and an outer piston rod 922 which are connected with each other are fixed at the center of the flange 923; the inner piston rod 921 points to the rack piston 2, and the outer piston rod 922 points to the actuator end cover 4; the inner piston rod 921 is slidably connected to the air chamber isolation stop 91.
The inner piston rod 921 and the outer piston rod 922 are connected by screw thread.
The end of the outer piston rod 922 is provided with a thread, and the angle limiting nut 93 is in threaded connection with the outer piston rod 922.
The air conditioner also comprises a working air inlet hole 10 and a working stopping air inlet hole 11; and the shells of the left short body 7 and the right short body 8 of the actuator are respectively provided with a work starting air inlet hole 10 and a work stopping air inlet hole 11, and the movement of the angle limiting piston 92 is controlled by air flow.
An outer seal cover 12; the actuator end cover 4 is connected with the outer sealing cover 12; one end of the outer piston rod 922 screwed with the angle limiting nut 93 is movable in the outer seal cover 12.
The air chamber isolation stop block 91 is in sliding connection with the inner side piston rod 921 through a sealing element; the air chamber isolation block 91 isolates the actuator main cylinder 1 from the actuator left short body 7 and the actuator right short body 8 to form a closed air chamber, so that the rack pistons 2 on two sides move in the closed air chamber.
The utility model discloses except that executor master cylinder body 1, rack piston 2, the drive shaft 3 that general pneumatic angle stroke executor had, still increased stop gear 9 that can open limit function or close limit function. The left short body 7 and the right short body 8 of the actuator are connected with the main cylinder body 1 of the actuator through screws, and a complete piston motion space is formed by the three cylinder bodies. The rack piston 2 is installed in the actuator main cylinder 1, and controls the angular travel motion of the driving shaft 3 by meshing with the gear of the driving shaft 2, and air chamber isolation stoppers 91 are respectively embedded between the actuator left short body 7, the actuator right short body 8 and the actuator main cylinder 1, so that a closed air chamber is formed between the actuator left short body 7, the actuator right short body 8 and the actuator main cylinder 1, so that the air can push the rack piston 2 to move towards the center of the actuator main cylinder 1.
The angle limiting piston 92 consists of an inner piston rod 921 pointing to the rack piston 2 in one direction and an outer piston rod 922 pointing to the actuator end cover 4 in one direction, wherein the inner piston rod 921 serves as a mechanical limitation for the outward movement of the rack piston 2 when the angle limiting piston 92 starts to work, so that the rack piston 2 is prevented from further outward movement, and the pneumatic angular travel actuator is stopped at an incompletely opened angle in the opening process. The top of the outer piston rod 922 is threaded and mechanically limited by two mutually parallel angular limit nuts 93. In the process that the angle limiting piston 92 moves inwards, the angle limiting nut 93 impacts the stop sleeve of the end cover 4 of the actuator, so that the angle limiting piston 92 cannot move inwards further, the angle limiting piston 92 is driven to move to a specified position, the rack piston 2 which moves outwards is driven to move to the specified position, and finally the driving shaft 3 stops at a specified angle.
The outer sealing covers 12 on both sides of the actuator not only provide a sealing space outside the angle limiting piston 92, but also protect nearby people from being hit by the outer piston rod 922 which suddenly runs out during the outward movement of the angle limiting piston 92.
The utility model discloses the motion mode after pneumatic angle stroke executor ventilates as follows:
when no gas is introduced into the actuator, the actuator does not work and stays in an initial off-position state; the actuator is opened to the air inlet hole 5 for air inlet, the rack piston 2 moves outwards, the driving shaft 3 is opened anticlockwise, the working air inlet hole 10 starts to air inlet, the angle limiting piston 92 moves inwards, the rack piston 2 needs to be meshed with the driving shaft 3 in a gear manner, the driving shaft 3 is connected with a valve, and a load exists during action, so that the movement speed of the corresponding rack piston 3 is slower than that of the angle limiting piston 92, and after the angle limiting nut 93 on the outer side piston rod 922 collides with the stop sleeve of the actuator end cover 4, the angle limiting piston 92 stops moving inwards continuously. And the air inlet hole 10 starts to work and continuously enters air, a constant inward thrust still exists on the angle limiting piston 92, and the angle limiting piston 92 is prevented from generating displacement when the rack piston 2 impacts the inner piston rod 921 when moving outwards, so that the stop angle of the driving shaft 3 is influenced.
When the air inlet hole 10 which starts to work stops air inlet, the air inlet hole 11 which stops working starts air inlet, the angle limiting piston 92 moves outwards, the actuator is continuously opened to the air inlet hole 5 for air inlet, and the rack piston 2 can continuously move outwards after being separated from mechanical limiting, so that the driving shaft 3 continuously moves anticlockwise and finally moves to the end point of the open position of the actuator.
When the actuator needs to be closed, the actuator closes the air inlet hole 6 to ventilate, the rack piston 2 moves inwards, so that the driving shaft rotates clockwise, and finally the rack piston moves to the actuator closing end point.
The utility model discloses the structure is accurate, has realized that the valve is opening the state that the in-process short duration kept not opening completely promptly to accurate control medium passes through the valve and the function of continuous pipeline thereof, possesses the using value.
Claims (9)
1. A pneumatic angular travel actuator capable of automatically keeping position in the opening and closing process is characterized in that: the device comprises an actuator main cylinder body (1), a rack piston (2), a driving shaft (3), an actuator end cover (4), an actuator opening air inlet hole (5) and an actuator closing air inlet hole (6);
a driving shaft (3) is arranged in the actuator main cylinder body (1), and the driving shaft (3) is meshed and connected with the rack pistons (2) on the two sides; actuator end covers (4) are arranged on two sides of the actuator main cylinder body (1); an actuator opening air inlet (5) and an actuator closing air inlet (6) are arranged outside the actuator main cylinder body (1), and the movement of the rack piston (2) is controlled through the actuator opening air inlet (5) and the actuator closing air inlet (6);
the device also comprises an actuator left short body (7), an actuator right short body (8) and a limiting mechanism (9); the left side of the actuator main cylinder body (1) is connected with an actuator left short body (7), and the right side of the actuator main cylinder body is connected with an actuator right short body (8); limiting mechanisms (9) are arranged in the actuator left short body (7) and the actuator right short body (8), and the limiting of the rack piston (2) is realized through the limiting mechanisms (9); and the two ends of the actuator left short body (7) and the actuator right short body (8) are connected with the actuator end cover (4).
2. The pneumatic angular travel actuator capable of self-retaining during opening and closing of claim 1, wherein: the actuator left short body (7) and the actuator right short body (8) are fixedly connected with the actuator main cylinder body (1) through bolts.
3. The pneumatic angular travel actuator capable of self-retaining during opening and closing of claim 1, wherein: the limiting mechanism (9) specifically comprises an air chamber isolation stop block (91), an angle limiting piston (92) and an angle limiting nut (93); air chamber isolation stop blocks (91) are embedded between the actuator left short body (7) and the actuator right short body (8) and the actuator main cylinder body (1); an angle limiting piston (92) is arranged on one side, which is not adjacent to the actuator main cylinder body (1), of the air chamber isolation stop block (91); and an angle limiting nut (93) is arranged at the distance from the angle limiting piston (92) to the far end of the rack piston (2).
4. A pneumatic angular travel actuator capable of self-retaining during opening and closing as claimed in claim 3, wherein: the angle limiting piston (92) specifically comprises an inner side piston rod (921), an outer side piston rod (922) and a flange (923); the flange (923) is in sliding connection with the inner shell of the left short body (7) of the actuator and the inner shell of the right short body (8) of the actuator; an inner piston rod (921) and an outer piston rod (922) which are connected with each other are fixed at the center of the flange (923); the inner piston rod (921) points to the rack piston (2), and the outer piston rod (922) points to the actuator end cover (4); and the inner side piston rod (921) is connected with the air chamber isolation stop block (91) in a sliding manner.
5. The self-retainable pneumatic angular travel actuator in a switching process of claim 4, wherein: the inner piston rod (921) and the outer piston rod (922) are in threaded connection.
6. The self-retainable pneumatic angular travel actuator in a switching process of claim 4, wherein: the end of the outer side piston rod (922) is provided with threads, and the angle limiting nut (93) is in threaded connection with the outer side piston rod (922).
7. A pneumatic angular travel actuator capable of self-retaining during opening and closing as claimed in claim 3, wherein: the air conditioner also comprises a working air inlet (10) and a working stopping air inlet (11); the shell of the actuator left short body (7) and the shell of the actuator right short body (8) are both provided with a working air inlet hole (10) and a working stop air inlet hole (11), and the movement of the angle limiting piston (92) is controlled through air flow.
8. The self-retainable pneumatic angular travel actuator in a switching process of claim 6, wherein: also comprises an outer sealing cover (12); the actuator end cover (4) is connected with the outer side sealing cover (12); one end of the outer piston rod (922) which is in threaded connection with the angle limiting nut (93) can move in the outer sealing cover (12).
9. A pneumatic angular travel actuator capable of self-retaining during opening and closing as claimed in claim 3, wherein: the air chamber isolation stop block (91) is connected with the inner side piston rod (921) in a sliding mode through a sealing piece; the air chamber isolation stop block (91) isolates the actuator main cylinder body (1), the actuator left short body (7) and the actuator right short body (8) into a closed air chamber, so that the rack pistons (2) on two sides move in the closed air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168911.7U CN214662397U (en) | 2021-05-27 | 2021-05-27 | Pneumatic angular travel actuator capable of automatically keeping position in opening and closing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168911.7U CN214662397U (en) | 2021-05-27 | 2021-05-27 | Pneumatic angular travel actuator capable of automatically keeping position in opening and closing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214662397U true CN214662397U (en) | 2021-11-09 |
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ID=78486277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121168911.7U Active CN214662397U (en) | 2021-05-27 | 2021-05-27 | Pneumatic angular travel actuator capable of automatically keeping position in opening and closing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214662397U (en) |
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2021
- 2021-05-27 CN CN202121168911.7U patent/CN214662397U/en active Active
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