CN216951923U - Single-acting spring reset type pneumatic actuator - Google Patents
Single-acting spring reset type pneumatic actuator Download PDFInfo
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- CN216951923U CN216951923U CN202220167262.7U CN202220167262U CN216951923U CN 216951923 U CN216951923 U CN 216951923U CN 202220167262 U CN202220167262 U CN 202220167262U CN 216951923 U CN216951923 U CN 216951923U
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Abstract
The utility model discloses a single-acting spring reset type pneumatic actuator, which relates to the technical field of pneumatic actuators and comprises a main body, wherein pistons are connected to the diagonal positions of two sides in the main body in a sliding mode, and a shifting fork is arranged in the middle of two groups of pistons. According to the utility model, the two groups of prefabricated springs are respectively arranged between the two groups of pistons and the two groups of end covers, the prefabricated springs are positioned in the middle parts between the pistons and the end covers, when the prefabricated springs are compressed due to the displacement of the pistons, the telescopic rods between the first connecting block and the second connecting block can relatively extend into the first connecting block and the second connecting block, so that the prefabricated springs are more stable during compression, the phenomenon of shaking and deviation can not occur, the compression of the prefabricated springs can not be interfered, the requirements of different valve opening and closing common working conditions can be better met by arranging the prefabricated springs, and after the acting force of the prefabricated springs pushes the pistons, different torques and opening and closing speeds can be designed, so that the use requirements of different valves can be better met.
Description
Technical Field
The utility model relates to the technical field of pneumatic actuators, in particular to a single-action spring reset type pneumatic actuator.
Background
The shifting fork type pneumatic actuator is a stroke piston type actuating mechanism and is suitable for switching off or metering control of valves (such as ball valves, butterfly valves and plug valves) with ninety-degree rotation angles.
Compressed air enters the air cylinder to push the piston to do linear motion, the piston converts the linear motion of the piston into rotary motion of the shifting fork by means of the design of the piston pin and the U-shaped groove of the shifting fork, and the shifting fork rotates to drive the output shaft to rotate, so that the valve is controlled.
Among the prior art often be provided with the small-size spring of multiunit in the middle of pneumatic actuator piston and the end cover, the operating mode demand of the different valve switchings of adaptation that the small-size spring of multiunit can not be better, and the whole life of the small-size spring of multiunit is lower, leads to needing the staff frequently to need to carry out periodic replacement to it, has not only increased use cost but also increased staff's intensity of labour.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model aims to provide a single-action spring reset type pneumatic actuator, so as to solve the technical problems that in the prior art, a plurality of groups of small springs cannot better adapt to the working condition requirements of opening and closing of different valves, and the service life of the whole small springs is short, so that workers need to replace the small springs regularly, the use cost is increased, and the labor intensity of the workers is increased.
In order to achieve the purpose, the utility model provides the following technical scheme: a single-acting spring reset type pneumatic actuator comprises a main body, pistons are connected to the diagonal positions of the two sides in the main body in a sliding mode, a shifting fork is arranged in the middle of two groups of pistons, the shifting fork and the two groups of pistons are movably connected in a limiting mode through piston pins, and an output shaft penetrating through the main body is arranged in the middle of the interior of the shifting fork in a clamping mode;
two sets of the piston outside all is provided with first connecting block and second connecting block respectively, first connecting block and the inside all slip spacing connection all of second connecting block have the telescopic link, just the outside that is located the telescopic link between first connecting block and the second connecting block is provided with prefabricated spring, the main part both sides all are provided with the end cover that is located first connecting block, second connecting block, telescopic link and the prefabricated spring outside.
By adopting the technical scheme, the two groups of the prefabricated springs are respectively arranged between the two groups of the pistons and the two groups of the end covers, the prefabricated springs are positioned in the middle parts between the pistons and the end covers, when the prefabricated springs are compressed by the displacement of the pistons, the telescopic rods between the first connecting blocks and the second connecting blocks can relatively extend into the first connecting blocks and the second connecting blocks, so that under the matching of the first connecting blocks, the second connecting blocks and the telescopic rods, the prefabricated springs are more stable in compression, the phenomenon of shaking and deviation can not occur, the compression of the prefabricated springs can not be interfered, the requirements of different valve opening and closing common working conditions can be better met by arranging the prefabricated springs, after the acting force of the prefabricated springs pushes the pistons again, different torques and opening and closing speeds can be designed, the use requirements of different valves can be better met, and the size of the prefabricated springs is larger than that of small springs, the whole service life of the prefabricated spring is longer than that of a small spring, the frequent problem of workers is avoided, the use cost is reduced to a certain degree, and the labor intensity of the workers is reduced.
The utility model is further provided with a stop block which is arranged outside the output shaft and above the shifting fork in a clamping manner, positioning bolts extending into the main body are arranged on two sides of one end of the main body, and two groups of positioning bolts are arranged at two ends of the stop block.
Through adopting above-mentioned technical scheme, for synchronous rotation between dog and the output shaft, the degree of depth through two sets of positioning bolt screw in main part insides is different, can make the angle of adjustment dog, and then can restrict the maximum displacement distance of piston and can prescribe a limit to the biggest turned angle of output shaft, better adaptation the requirement of different valve switchings.
The utility model is further provided that sealing rings are arranged between the main body and the two groups of end covers, and the sealing rings are made of rubber.
Through adopting above-mentioned technical scheme, wherein the sealing washer plays the leakproofness between main part and the end cover, avoids taking place the phenomenon of gas leakage.
The utility model is further provided that two sides of one end of the main body are respectively provided with a first air inlet and a second air inlet, and inner walls of the first air inlet and the second air inlet are both provided with internal threads.
Through adopting above-mentioned technical scheme, first air inlet and second air inlet be convenient for external gas can get into the inside motion that promotes two sets of pistons and do to be close to each other or keep away from each other of main part.
The utility model is further arranged in such a way that one end in the main body is provided with a communicating pipe extending to the two ends of the main body, the first air inlet is communicated with the communicating pipe, and the tail end of the second air inlet extends to the inside of the main body.
Through adopting above-mentioned technical scheme, wherein gas can promote two sets of pistons through first air inlet and do the motion that is close to each other, and gas can promote two sets of pistons through the second air inlet and do the motion of keeping away from each other.
The utility model is further provided that a rotating block is fixedly arranged on the top of the output shaft and above the main body, a graduated ring is fixedly arranged on the top of the main body and outside the rotating block, and a graduated pointer matched with the graduated ring is arranged outside the rotating block.
Through adopting above-mentioned technical scheme, wherein be provided with the pointer above the turning block, and wherein the scale ring can not rotate along with the rotation of output shaft, and then when the turning block rotated along with the output shaft, wherein the pointer can be to the angle scale sign that points to the correspondence along with the rotation of angle, the staff's of being convenient for observation and carrying out angular adjustment more.
The utility model is further arranged in that pin holes matched with the piston pins are formed in the two groups of pistons, and sleeves matched with the shifting forks are arranged in the middle positions of the outer sides of the piston pins.
Through adopting above-mentioned technical scheme, the pinhole is convenient for to the activity limiting displacement of piston pin.
In summary, the utility model mainly has the following beneficial effects: the utility model is characterized in that a group of prefabricated springs are respectively arranged between two groups of pistons and two groups of end covers, the prefabricated springs are positioned in the middle parts between the pistons and the end covers, when the prefabricated springs are compressed due to the displacement of the pistons, the telescopic rods between the first connecting block and the second connecting block relatively extend into the first connecting block and the second connecting block, and further under the cooperation of the first connecting block, the second connecting block and the telescopic rods, the prefabricated springs are more stable in compression, the phenomenon of shaking and deviation is avoided, the compression of the prefabricated springs is not interfered, the requirements of different valve opening and closing common working conditions are better met by arranging the prefabricated springs, after the acting force of the prefabricated springs pushes the pistons, different torques and opening and closing speeds can be designed, the use requirements of different valves are better met, and because the volume of the prefabricated springs is larger than that of small springs, the whole service life of the prefabricated springs is longer than that of the small springs, and the problem of frequent staff is avoided, the use cost is reduced to a certain extent, and the labor intensity of the staff is reduced.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged, partially exploded perspective view of the present invention;
FIG. 4 is an enlarged internal view of the present invention;
fig. 5 is an enlarged schematic view of the overall structure of the present invention.
In the figure: 1. a main body; 2. a piston; 3. a shifting fork; 4. a piston pin; 5. an output shaft; 6. a stopper; 7. positioning the bolt; 8. a first connection block; 9. a second connecting block; 10. a telescopic rod; 11. prefabricating a spring; 12. an end cap; 13. a seal ring; 14. rotating the block; 15. a graduated ring; 16. a pin hole; 17. a first air inlet; 18. a second air inlet.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A single-acting spring reset type pneumatic actuator is shown in figures 1, 2, 3 and 4 and comprises a main body 1, pistons 2 are connected to the diagonal positions of the two sides in the main body 1 in a sliding mode, a shifting fork 3 is arranged in the middle of two groups of pistons 2, the shifting fork 3 is movably connected with the two groups of pistons 2 in a limiting mode through a piston pin 4, and an output shaft 5 penetrating through the main body 1 is clamped in the middle of the interior of the shifting fork 3;
the outer sides of two groups of pistons 2 are respectively provided with a first connecting block 8 and a second connecting block 9, the inner parts of the first connecting block 8 and the second connecting block 9 are in sliding limit connection with a telescopic rod 10, a prefabricated spring 11 is arranged between the first connecting block 8 and the second connecting block 9 and on the outer side of the telescopic rod 10, the two sides of the main body 1 are respectively provided with an end cover 12 on the outer sides of the first connecting block 8, the second connecting block 9, the telescopic rod 10 and the prefabricated spring 11, the requirement of different valve opening and closing common working conditions is better met by arranging the prefabricated spring 11, after the piston 2 is pushed by the acting force of the prefabricated spring 11, different torques and opening and closing speeds can be designed, the use requirements of different valves are better met, because the prefabricated spring 11 is larger than a small spring, the whole service life of the prefabricated spring 11 is longer than that of the small spring, and the frequent problem of workers is avoided, use cost is reduced to a certain extent and staff's intensity of labour has been reduced, all be provided with sealing washer 13 between main part 1 and the two sets of end cover 12, and the material of sealing washer 13 is rubber, wherein the better improvement of sealing washer 13 the leakproofness between main part 1 and the end cover 12, avoid taking place the phenomenon of gas leakage, first air inlet 17 and second air inlet 18 have been seted up respectively to 1 one end both sides of main part, and first air inlet 17 and the 18 inner walls of second air inlet all are provided with the internal thread, wherein the internal thread is convenient for be connected with external gas pipeline, communicating pipe that extends to 1 both ends of main part is seted up to 1 inside one end of main part, first air inlet 17 is linked together with communicating pipe, 18 terminal extensions to the inside of main part 1 of second air inlet.
Referring to fig. 1 and 4, a stop block 6 is clamped outside an output shaft 5 and above a shifting fork 3, positioning bolts 7 extending into the main body 1 are arranged on both sides of one end of the main body 1, and two groups of positioning bolts 7 are arranged at both ends of the stop block 6.
Referring to fig. 1, 4 and 5, a rotating block 14 is fixedly arranged at the top of the output shaft 5 and above the main body 1, a scale ring 15 is fixedly arranged at the top of the main body 1 and outside the rotating block 14, and a scale pointer matched with the scale ring 15 is arranged outside the rotating block 14.
Referring to fig. 1, pin holes 16 matched with the piston pins 4 are formed in the two groups of pistons 2, and sleeves matched with the shifting forks 3 are arranged in the middle positions of the outer sides of the piston pins 4.
The working principle of the utility model is as follows: when the valve is used, the valve is integrally placed above an external valve, so that the bottom of the output shaft 5 is connected with an input shaft of the external valve, and the external valve can be opened and closed when the output shaft 5 rotates;
when the valve is used, the first air inlet 17 and the second air inlet 18 are respectively connected with an external air pump, when external air enters the main body 1 through one of the first air inlet 17 and the second air inlet 18, the air pushes the two groups of pistons 2 to do linear motion of being far away from or close to each other, at the moment, the pistons 2 can drive the shifting forks 3 to rotate through the piston pins 4, and then the shifting forks 3 drive the output shafts 5 to rotate, so that the external valve can be opened and closed;
furthermore, when the two groups of pistons 2 move to compress the prefabricated springs 11, a group of prefabricated springs 11 are respectively arranged between the two groups of pistons 2 and two groups of end covers 12, the prefabricated springs 11 are positioned in the middle parts between the pistons 2 and the end covers 12, when the prefabricated springs 11 are compressed by the displacement of the pistons 2, the telescopic rods 10 between the first connecting blocks 8 and the second connecting blocks 9 can relatively extend into the first connecting blocks 8 and the second connecting blocks 9, and under the matching of the first connecting blocks 8, the second connecting blocks 9 and the telescopic rods 10, the prefabricated springs 11 are more stable in compression, the phenomenon of shaking and deviation can not occur, and the compression of the prefabricated springs 11 can not be interfered;
the requirement of different valves on the same opening and closing working condition is better met by arranging the prefabricated spring 11, the acting force of the prefabricated spring 11 pushes the piston 2, and the prefabricated spring can be designed into different torques and opening and closing speeds to better adapt to the use requirements of different valves, and the volume of the prefabricated spring 11 is larger than that of a small spring, so that the service life of the whole prefabricated spring 11 is longer than that of the small spring, the frequent problem of workers is avoided, the use cost is reduced to a certain extent, and the labor intensity of the workers is reduced;
furthermore, the stop block 6 and the output shaft 5 rotate synchronously, and the two groups of positioning bolts 7 are screwed into the main body 1 at different depths, so that the angle of the stop block 6 can be adjusted, the maximum displacement distance of the piston 2 can be limited, the maximum rotation angle of the output shaft 5 can be limited, and the requirements of opening and closing different valves are better met;
wherein the fixed turning block 14 that is provided with in the position outside that the main part 1 is run through at output shaft 5 top, wherein be provided with the pointer above the turning block 14, and wherein scale ring 15 can not rotate along with output shaft 5's rotation, and then when turning block 14 rotated along with output shaft 5, wherein the pointer can be to the angle scale sign that points to the correspondence along with the rotation of angle, the staff's of being convenient for observation and carrying out angle adjustment more.
Although embodiments of the present invention have been shown and described, the present embodiments are merely illustrative of the present invention and are not intended to limit the present invention, and the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and those skilled in the art can make modifications, substitutions, variations, etc. of the embodiments as required without departing from the principle and spirit of the present invention, but within the scope of the claims of the present invention.
Claims (7)
1. A single-acting spring return pneumatic actuator, includes main part (1), its characterized in that: pistons (2) are connected to the diagonal positions of the two sides in the main body (1) in a sliding mode, a shifting fork (3) is arranged in the middle of the two groups of pistons (2), the shifting fork (3) and the two groups of pistons (2) are movably connected in a limiting mode through a piston pin (4), and an output shaft (5) penetrating through the main body (1) is clamped in the middle of the inner portion of the shifting fork (3);
two sets of piston (2) outside all is provided with first connecting block (8) and second connecting block (9) respectively, first connecting block (8) and second connecting block (9) inside all slide limit connection have telescopic link (10), the outside that just is located telescopic link (10) between first connecting block (8) and second connecting block (9) is provided with prefabricated spring (11), main part (1) both sides all are provided with end cover (12) that are located first connecting block (8), second connecting block (9), telescopic link (10) and prefabricated spring (11) outside.
2. A single-acting spring-return pneumatic actuator as claimed in claim 1, wherein: the output shaft (5) outside just is located shift fork (3) top block and is provided with dog (6), the both sides of main part (1) one end all are provided with positioning bolt (7) that extend to main part (1) inside, and are two sets of positioning bolt (7) are located the both ends of dog (6).
3. A single-acting spring-return pneumatic actuator as claimed in claim 1, wherein: sealing rings (13) are arranged between the main body (1) and the two groups of end covers (12), and the sealing rings (13) are made of rubber.
4. A single-acting spring-return pneumatic actuator as claimed in claim 1, wherein: first air inlet (17) and second air inlet (18) have been seted up respectively to main part (1) one end both sides, and first air inlet (17) and second air inlet (18) inner wall all are provided with the internal thread.
5. The single-acting spring-return pneumatic actuator of claim 4, wherein: the inside one end of main part (1) is seted up and is extended to the communicating pipe at main part (1) both ends, first air inlet (17) and communicating pipe are linked together, the inside of second air inlet (18) end extension to main part (1).
6. A single-acting spring-return pneumatic actuator as claimed in claim 1, wherein: the rotary table is characterized in that a rotating block (14) is fixedly arranged at the top of the output shaft (5) and above the main body (1), a scale ring (15) is fixedly arranged at the top of the main body (1) and outside the rotating block (14), and a scale pointer matched with the scale ring (15) is arranged outside the rotating block (14).
7. A single-acting spring-return pneumatic actuator as claimed in claim 1, wherein: the two groups of pistons (2) are internally provided with pin holes (16) matched with the piston pins (4), and sleeves matched with the shifting forks (3) are arranged in the middle positions of the outer sides of the piston pins (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220167262.7U CN216951923U (en) | 2022-01-21 | 2022-01-21 | Single-acting spring reset type pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220167262.7U CN216951923U (en) | 2022-01-21 | 2022-01-21 | Single-acting spring reset type pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951923U true CN216951923U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220167262.7U Active CN216951923U (en) | 2022-01-21 | 2022-01-21 | Single-acting spring reset type pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951923U (en) |
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2022
- 2022-01-21 CN CN202220167262.7U patent/CN216951923U/en active Active
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