CN218440925U

CN218440925U - Manual pneumatic switching mechanism of pneumatic actuator

Info

Publication number: CN218440925U
Application number: CN202222896687.4U
Authority: CN
Inventors: 章雄
Original assignee: Ruili Fluid Control Wuxi Co ltd
Current assignee: Ruili Fluid Control Wuxi Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-02-03
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses a manual pneumatic switching mechanism of a pneumatic actuator, which comprises a cylinder body and a manual mechanism arranged at the bottom of the cylinder body; wherein, install the air inlet on the cylinder body, sliding connection has two sealed pistons that the symmetry set up on the inner wall of cylinder body, two the equal fixedly connected with rack plate in one side that sealed piston is close to each other. The utility model discloses a mutually supporting between cylinder body and the manually-operated mechanism has realized a pneumatic actuator's manual pneumatic switching mechanism, not only conveniently switches the hand-operated device to pneumatic actuator, avoids the horizontal pin to lose and causes the problem that can't open and close, adopts intermeshing between the gear to realize opening and close to the valve moreover, has reduced the requirement to the precision, thereby makes the utility model discloses a manual switching device is more practical to adopt the pinion to drive the gear wheel function, increased pneumatic actuator and opened and close time saving and labor saving more when the valve.

Description

Manual pneumatic switching mechanism of pneumatic actuator

Technical Field

The utility model relates to a pneumatic actuator technical field particularly, relates to a pneumatic actuator's manual pneumatic switching mechanism.

Background

The pneumatic actuator is an actuating device for opening and closing or adjusting a valve by air pressure, and is also called a pneumatic actuating mechanism or a pneumatic device.

As in application No.: CN201920533666.1 discloses a pneumatic actuator with manual auto-change over device, including the pedestal and set up piston, piston rod on the pedestal, be equipped with the lead screw frame along the piston rod axial on the pedestal, be equipped with the screw hole on this lead screw frame, the piston rod is equipped with towards the tip of lead screw frame and stretches into the hole, should stretch into the fixed screw seat that is equipped with of hole department, the screw seat includes the lift hole, and is located the lift hole and stretches into the slider chamber between the hole, screw hole, lift hole, stretch into the equal coaxial setting of hole, be equipped with on the pneumatic actuator with the manual auto-change over device of piston rod linkage complex, this manual auto-change over device includes lead screw, hand wheel, left side spiral shell piece, right side spiral shell piece and spiral shell piece mechanism that opens and shuts, the lead screw sets up and does the turnover cooperation in the lead screw frame threaded hole to it is downthehole to extend to stretch into, be equipped with the left semicircle screw and the right semicircle screw that each other amalgamation just and the right semicircle screw thread adaptation and the right semicircle screw on left side spiral shell piece, this left semicircle screw sets up in the slider intracavity and right semicircle screw and be located the lead screw both sides respectively.

However, in the manual switching device in the above technology, the left screw block and the right screw block are close to each other and meshed with the lead screw, so that the meshing precision between the left screw block, the right screw block and the lead screw is high, otherwise, the lead screw is easily worn, the service life is shortened, and the lead screw is mounted on the piston rod and used for extending and retracting the piston rod.

SUMMERY OF THE UTILITY MODEL

To the manual auto-change over device that prior art exists, adopt left spiral shell piece and right spiral shell piece be close to each other and lead screw intermeshing, consequently to a left side, the meshing precision between right spiral shell piece and the lead screw is higher, otherwise cause wearing and tearing very easily, thereby reduce life, secondly the lead screw is installed and is used for the flexible problem to the piston rod on the piston rod, the utility model provides a pneumatic actuator's manual pneumatic switching mechanism not only conveniently switches over pneumatic actuator's manual device, avoids the horizontal pin to lose and causes the problem that can't open and close, adopts intermeshing between the gear to realize opening and close to the valve moreover, has reduced the requirement to the precision, thereby makes the utility model discloses a manual auto-change over device is more practical to adopt the pinion to drive the gear wheel function, increased pneumatic actuator and opened and close labour saving and time saving more to the valve.

In order to achieve the above object, the utility model provides a following technical scheme:

a manual-pneumatic switching mechanism for a pneumatic actuator, comprising:

the cylinder body and the manual mechanism are arranged at the bottom of the cylinder body;

the cylinder body is provided with an air inlet, the inner wall of the cylinder body is connected with two symmetrically-arranged sealing pistons in a sliding manner, one sides, close to each other, of the two sealing pistons are fixedly connected with rack plates, the positions, corresponding to the two rack plates, on the inner wall of the cylinder body are rotatably connected with a driving gear through a mounting shaft, the side face of the driving gear is fixedly connected with a valve rod, and one end, far away from the driving gear, of the valve rod movably penetrates through the cylinder body and extends to the outside of the cylinder body;

wherein, hand operated mechanism includes fixed connection and is in the fixed casing in cylinder body bottom, the side threaded connection of casing has the switching screw rod, the side of casing just corresponds the position of switching screw rod seted up with switching screw rod intermeshing's internal thread is located inside the casing the tip of switching screw rod rotates through connecting bearing and installs the mounting bracket, the bottom fixedly connected with thread bush of mounting bracket, thread connection has hand screw on the thread bush, hand screw's top fixedly connected with driving gear, just correspond on the valve rod the position fixedly connected with of driving gear with driving gear intermeshing's driven gear, just the tooth number of driven gear is greater than the tooth number of driving gear.

Preferably, the rack plate is kept away from one side fixedly connected with limit slide of drive gear, just correspond on the inner wall of cylinder body limit slide's position install with limit slide assorted limit slide.

Preferably, one side of the limiting slide block, which is close to the limiting slide rail, movably penetrates through the limiting slide rail, extends into the limiting slide rail, and is connected with the inner wall of the limiting slide rail in a sliding manner.

Preferably, the mounting bracket is close to two limiting telescopic rods symmetrically arranged on one side of the switching screw rod, and the telescopic ends of the limiting telescopic rods are fixedly connected with the mounting bracket.

Preferably, one end of the switching screw rod, which is far away from the mounting frame, is fixedly connected with a rotating disc.

Preferably, one end of the manual screw, which is far away from the driving gear, is fixedly connected with a rotary hand wheel.

Preferably, the bottom of the driving gear is rotatably connected with the inner wall of the mounting frame through a limiting bearing.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a mutually supporting between cylinder body and the manually-operated mechanism has realized a pneumatic actuator's manual pneumatic switching mechanism, not only conveniently switches the hand-operated device to pneumatic actuator, avoids the horizontal pin to lose and causes the problem that can't open and close, adopts intermeshing between the gear to realize opening and close to the valve moreover, has reduced the requirement to the precision, thereby makes the utility model discloses a manual switching device is more practical to adopt the pinion to drive the gear wheel function, increased pneumatic actuator and opened and close time saving and labor saving more when the valve.

Drawings

Fig. 1 is a schematic perspective view of a manual-pneumatic switching mechanism of a pneumatic actuator according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the manual-pneumatic switching mechanism of the pneumatic actuator of the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

fig. 4 is a schematic structural diagram of a manual mechanism in the manual-pneumatic switching mechanism of the pneumatic actuator of the present invention.

In the figure:

1. a cylinder body; 2. a manual mechanism;

101. an air inlet; 102. a sealing piston; 103. a rack plate; 104. a drive gear; 105. a valve stem;

1031. a limiting slide block; 1032. a limiting slide rail;

201. a housing; 202. switching the screw rods; 203. a mounting frame; 2031. limiting the telescopic rod; 204. a threaded sleeve; 205. a manual screw; 206. a driving gear; 207. a driven gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a manual-pneumatic switching mechanism of a pneumatic actuator includes:

the device comprises a cylinder body 1 and a manual mechanism 2 arranged at the bottom of the cylinder body 1;

the air inlet 101 is installed on the cylinder body 1, the two symmetrically-arranged sealing pistons 102 are connected to the inner wall of the cylinder body 1 in a sliding manner, rack plates 103 are fixedly connected to one sides, close to each other, of the two sealing pistons 102, a driving gear 104 is rotatably connected to the positions, corresponding to the two rack plates 103, on the inner wall of the cylinder body 1 through an installation shaft, a valve rod 105 is fixedly connected to the side face of the driving gear 104, and one end, far away from the driving gear 104, of the valve rod 105 movably penetrates through the cylinder body 1 and extends to the outside of the cylinder body 1;

wherein, manual mechanism 2 includes fixed connection at the fixed casing 201 in 1 bottom of cylinder body, the side threaded connection of casing 201 has switching screw rod 202, the side of casing 201 and the position that corresponds switching screw rod 202 offer with switching screw rod 202 intermeshing's internal thread, the tip that is located the inside switching screw rod 202 of casing 201 is rotated through connecting the bearing and is installed mounting bracket 203, the bottom fixedly connected with thread bush 204 of mounting bracket 203, threaded connection has manual screw rod 205 on the thread bush 204, the top fixedly connected with driving gear 206 of manual screw rod 205, the position fixedly connected with that just corresponds driving gear 206 on the valve rod 105 and with driving gear 206 intermeshing's driven gear 207, and the number of teeth of driven gear 207 is greater than the number of teeth of driving gear 206.

Through adopting above-mentioned technical scheme, not only conveniently switch pneumatic actuator's manual device, avoid the cross pin to lose the problem that causes unable opening and close, adopt the intermeshing between the gear to realize opening and close the valve moreover, reduced the requirement to the precision, thereby make the utility model discloses a manual auto-change over device is more practical to adopt the pinion to drive the gear wheel function, increased pneumatic actuator and opened and close time saving and labor saving more to the valve.

As shown in fig. 1 to 4, a limit slider 1031 is fixedly connected to one side of the rack plate 103 away from the driving gear 104, a limit sliding rail 1032 matched with the limit slider 1031 is installed on the inner wall of the cylinder 1 and at a position corresponding to the limit slider 1031, and one side of the limit slider 1031 close to the limit sliding rail 1032 movably penetrates through the limit sliding rail 1032 and extends to the inside of the limit sliding rail 1032 to be connected with the inner wall of the limit sliding rail 1032 in a sliding manner.

Through adopting above-mentioned technical scheme, increased the stability that rack plate 103 removed, thereby improved the utility model discloses pneumatic actuator moves stability.

As shown in fig. 1 to 4, one side of the mounting bracket 203 close to the switching screw 202 is fixedly connected with two symmetrically arranged limiting expansion rods 2031, and the expansion end of the limiting expansion rod 2031 is fixedly connected with the mounting bracket 203.

Through adopting above-mentioned technical scheme, increased the stability that mounting bracket 203 removed.

As shown in fig. 1-4, a rotating disc is fixedly connected to one end of the switching screw 202 away from the mounting frame 203, and a rotating handwheel is fixedly connected to one end of the manual screw 205 away from the driving gear 206.

By adopting the technical scheme, the switching screw 202 and the manual screw 205 are convenient to rotate, so that the convenience of manual switching and manual opening and closing of the pneumatic actuator is improved.

As shown in fig. 1-4, the bottom of the drive gear 206 is rotatably coupled to the inner wall of the mounting bracket 203 via a limit bearing.

By adopting the above technical scheme, the stability of the rotation of the driving gear 206 is increased.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The utility model provides a pneumatic actuator's manual pneumatic switching mechanism, during the use, when needs carry out the manual opening and close to pneumatic actuator, only need rotate switching screw rod 202 to under the effect of internal thread, driving gear 206 on the drive mounting bracket 203 is close to driven gear 207, and with driven gear 207 intermeshing, then rotate manual screw rod 205, thereby under the intermeshing between driving gear 206 and driven gear 207, realize the manual opening and close of valve rod 105.

In conclusion: the manual and pneumatic switching mechanism of the pneumatic actuator is composed of a cylinder body 1 and a manual mechanism 2, and solves the problems in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A manual pneumatic switching mechanism for a pneumatic actuator, comprising:

the cylinder body (1) and a manual mechanism (2) arranged at the bottom of the cylinder body (1);

the air inlet (101) is installed on the cylinder body (1), two sealing pistons (102) which are symmetrically arranged are connected to the inner wall of the cylinder body (1) in a sliding mode, rack plates (103) are fixedly connected to one sides, close to each other, of the two sealing pistons (102), a driving gear (104) is rotatably connected to the positions, corresponding to the two rack plates (103), of the inner wall of the cylinder body (1) through a mounting shaft, a valve rod (105) is fixedly connected to the side face of the driving gear (104), and one end, far away from the driving gear (104), of the valve rod (105) movably penetrates through the cylinder body (1) and extends to the outside of the cylinder body (1);

wherein, hand-operated mechanism (2) are including fixed connection cylinder body (1) bottom fixed casing (201), the side threaded connection of casing (201) has switching screw rod (202), the side of casing (201) just corresponds the position of switching screw rod (202) seted up with switching screw rod (202) intermeshing's internal thread is located inside casing (201) the tip of switching screw rod (202) is rotated through connecting the bearing and is installed mounting bracket (203), the bottom fixedly connected with thread bush (204) of mounting bracket (203), threaded connection has manual screw rod (205) on thread bush (204), the top fixedly connected with driving gear (206) of manual screw rod (205), on valve rod (105) and correspond the position fixedly connected with of driving gear (206) with driving gear (206) intermeshing's driven gear (207), just the number of teeth of driven gear (207) is greater than the number of teeth of driving gear (206).

2. The manual pneumatic switching mechanism of a pneumatic actuator of claim 1, wherein: rack plate (103) are kept away from one side fixedly connected with limit slide (1031) of drive gear (104), on the inner wall of cylinder body (1) and correspond the position of limit slide (1031) install with limit slide (1032) of limit slide (1031) assorted.

3. The manual pneumatic switching mechanism of a pneumatic actuator according to claim 2, wherein: one side of the limiting sliding block (1031) close to the limiting sliding rail (1032) movably penetrates through the limiting sliding rail (1032), extends to the inside of the limiting sliding rail (1032), and is connected with the inner wall of the limiting sliding rail (1032) in a sliding manner.

4. A manual pneumatic switching mechanism for a pneumatic actuator as set forth in claim 3 wherein: the mounting bracket (203) is close to two limiting telescopic rods (2031) symmetrically arranged on one side of the switching screw rod (202), and the telescopic ends of the limiting telescopic rods (2031) are fixedly connected with the mounting bracket (203).

5. The manual pneumatic switching mechanism of a pneumatic actuator according to claim 4, wherein: one end, far away from the mounting rack (203), of the switching screw rod (202) is fixedly connected with a rotating disk.

6. The manual pneumatic switching mechanism of a pneumatic actuator of claim 5, wherein: one end, far away from the driving gear (206), of the manual screw rod (205) is fixedly connected with a rotary hand wheel.

7. The manual-pneumatic switching mechanism of a pneumatic actuator of claim 6, wherein: the bottom of the driving gear (206) is rotatably connected with the inner wall of the mounting rack (203) through a limiting bearing.