CN212960122U

CN212960122U - IDMO series side dress hand wheel executor

Info

Publication number: CN212960122U
Application number: CN202020862995.3U
Authority: CN
Inventors: 吴伟国
Original assignee: Wuxi Wierxun Fluid Control Technology Co ltd
Current assignee: Wuxi Wierxun Fluid Control Technology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-04-13
Anticipated expiration: 2030-05-21

Abstract

The utility model discloses a side dress hand wheel executor of IDMO series, include: the cavity is positioned in the middle of the base, the piston I is connected to the left side of the cavity in a sliding mode, the piston II is connected to the right side of the cavity in a sliding mode, the gear shaft is vertically and rotatably connected to the middle of the cavity, and is in meshing transmission with the first piston and the second piston through a gear shaft, the right side of the second piston is fixedly connected with a clutch seat, a push rod is transversely connected in the clutch seat, the right end of the push rod is fixedly connected with a screw rod, a screw rod sleeve is sleeved outside the screw rod, a hand wheel is fixedly connected outside the screw rod sleeve, an air inlet and an air outlet are arranged on the front wall of the base, the proposal not only maintains the pneumatic function, but also adds the manual operation function, the middle position regulation, the limit and locking function and the valve position display function, the valve can be directly installed on the top of the valve, so that the transmission precision between the actuator and the valve is increased, and the transmission torque loss is small. Certain field installation cost can be reduced.

Description

IDMO series side dress hand wheel executor

Technical Field

The utility model relates to a pneumatic actuator technical field specifically relates to an IDMO series side dress hand wheel executor.

Background

The pneumatic actuator is an actuating device for opening and closing or regulating a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head. Pneumatic actuators are sometimes also equipped with certain auxiliary devices. Commonly used valve positioners and hand wheel mechanisms. The valve positioner is used for improving the performance of the actuator by utilizing a feedback principle, so that the actuator can realize accurate positioning according to a control signal of the controller. The hand wheel mechanism is used for directly operating the control valve to maintain normal production when the control system has no power supply, no air supply, no output of the controller or failure of the actuating mechanism.

Conventional pneumatically controlled valve emergency braking is accomplished by a hand wheel mechanism (clutch gearbox). Typically, the mechanism is mounted between the actuator and the valve by means of a bracket and an adapter shaft for manual operation in an emergency. However, due to the multiple connection installation between the actuator and the bracket adapter shaft and the valve, the transmission precision and the transmission torque between the actuator and the valve are greatly lost, and certain additional installation cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an IDMO series side dress hand wheel executor.

The technical scheme of the utility model is that: an IDMO series side-mounted handwheel actuator comprising: the cavity is located in the middle of the base, the piston I is slidably connected to the left side of the cavity, the piston II is slidably connected to the right side of the cavity, the gear shaft is vertically rotatably connected to the middle of the cavity and meshed with the piston I and the piston II for transmission, a clutch seat is fixedly connected to the right side of the piston, a push rod is transversely connected to the inside of the clutch seat, a lead screw is fixedly connected to the right end of the push rod, a lead screw sleeve is sleeved on the outer side of the lead screw, a hand wheel is fixedly connected to the outer side of the lead screw sleeve, the air inlet is formed in the front wall of the base through the air outlet, the air inlet is communicated with the cavity in the middle of the cavity, and the air outlet is communicated with the cavities.

Furthermore, the left end of the base is fixedly connected with an end cover, the right side of the end cover is fixedly connected with a spring, the right end of the spring is fixedly connected with a piston I, and after the air pressure in the middle of the cavity is reduced, the spring restores to push the piston I and the piston to move towards the middle of the cavity.

Furthermore, an indicating cover is arranged on the right side of the hand wheel, an indicator is arranged at the right end of the screw rod, and the stroke size of the first piston or the second piston is judged by observing the position of the indicator in the indicating cover.

Furthermore, a cam is installed on the upper portion of the gear shaft, and two adjusting screws I and two adjusting screws II used for adjusting the steering limit of the cam are arranged on the front wall of the base side by side.

Further, the cam and the gear shaft rotate synchronously, the rotation stroke is 0-90 degrees, the first adjusting screw is used for adjusting the rotation angle of the cam when the cam is limited at 0 degree, the fine adjustment range is +/-5 degrees, the second adjusting screw is used for adjusting the rotation angle of the cam when the cam is limited at 90 degrees, the fine adjustment range is +/-5 degrees, and the cam is adjusted at 0 degree +/-5 degrees and is adjusted at 90 degrees +/-5 degrees through the first adjusting screw and the second adjusting screw.

Furthermore, a clamping nut is arranged between the screw rod and the push rod, the screw rod and the push rod are fixedly connected through the clamping nut, and the screw rod and the push rod are connected through the clamping nut, so that the maintenance and replacement cost of the screw rod is reduced.

The utility model has the advantages that:

(1) conventional pneumatically controlled valve emergency braking is accomplished by a hand wheel mechanism (clutch gearbox) which is typically mounted between the actuator and the valve by means of a bracket and an adapter pinion for manual operation in an emergency. However, because the installation is connected to the multiple between "executor + support switching pinion shaft + valve", this kind of scheme is not only great to the transmission precision and the transmission moment of torsion loss between executor to the valve, but also has increased certain additional installation cost, compares with traditional pneumatic actuator, the utility model discloses above problem has been perfectly solved to integration side dress hand wheel pneumatic actuator (IDMO) technique, has not only reduceed the loss on transmission precision and transmission moment of torsion, has still reduced installation cost, and then has reduced the purchasing cost of each enterprise, has promoted the economic development in the trade.

(2) Compare traditional pneumatic control valve emergency braking, the manual operation of this device hand wheel still provides indicating device, through observing the accurate control valve degree of opening and shutting of indicator.

Drawings

Fig. 1 is a structural view of the present invention.

Fig. 2 is a cross-sectional view taken along line a-a of fig. 1 according to the present invention.

Figure 3 is a front view of the present invention.

Fig. 4 is a perspective view of an embodiment of the present invention.

Fig. 5 is a connection relationship diagram of the gear shaft and the cam according to the present invention.

The device comprises a cavity 1, a base 2, a piston 3, a piston 4, a piston II, a gear shaft 5, an air inlet 6, an air outlet 7, a clutch seat 41, a push rod 42, a screw rod 43, a screw rod sleeve 44, a hand wheel 45, an end cover 21, a spring 22, an indication cover 46, an indicator 47, a cam 51, a clamping nut 48, an adjusting screw I23 and an adjusting screw II 24.

Detailed Description

As shown in fig. 1, an IDMO series side-mounted handwheel actuator includes: the air pressure in the middle of the cavity 1 is reduced, and the spring 22 pushes the piston I3 and the piston II 4 to move towards the middle of the cavity 1 again; the gear shaft 5 is vertically and rotatably connected to the middle of the cavity 1 and is in meshed transmission with the first piston 3 and the second piston 4, a clutch seat 41 is fixedly connected to the right side of the second piston 4, a push rod 42 is transversely connected to the inside of the clutch seat 41, a lead screw 43 is fixedly connected to the right end of the push rod 42, a lead screw sleeve 44 is sleeved on the outer side of the lead screw 43, a hand wheel 45 is fixedly connected to the outer side of the lead screw sleeve 44, an indicating cover 46 is arranged on the right side of the hand wheel 45, an indicator 47 is arranged at the right end of the lead screw 43, the stroke size of the first piston 3 and the stroke size of the second piston 4 are judged by observing the position of the indicator in the indicating cover 46, as shown in fig. 3, an air inlet 6 and an air outlet 7.

As shown in figure 5, a cam 51 is arranged on the upper part of the gear shaft 5, as shown in figure 2, the front wall of the base 2 is provided with a first adjusting screw 23 and a second adjusting screw 24 which are used for adjusting the turning limit of the cam 51 side by side, the cam 51 rotates synchronously with the gear shaft 5 and has the rotating stroke of 0-90 degrees, the first adjusting screw 23 is used for adjusting the rotating angle of the cam 51 when the cam 51 is limited at 0 degrees and has a fine adjusting range of +/-5 degrees, the second adjusting screw 24 is used for adjusting the rotating angle of the cam 51 when the cam 51 is limited at 90 degrees and has a fine adjusting range of +/-5 degrees, and the cam 51 is adjusted at 0 +/-5 degrees and is adjusted at 90 +/-5 degrees through the first adjusting screw 23 and the second adjusting screw 24.

And a clamping nut 48 is arranged between the screw rod 43 and the push rod 42, the screw rod 43 and the push rod 42 are fixedly connected through the clamping nut 48, and the screw rod 43 and the push rod 42 are connected through the clamping nut 48, so that the maintenance and replacement costs of the screw rod 43 are reduced.

The use method of the IDMO series side-mounted hand wheel actuator in the embodiment comprises the following steps:

1. a valve is fixedly connected to the lower end of the gear shaft 5, the hand wheel 45 rotates to drive the screw rod 43 to move to the middle of the indicator 47 and reach the middle of the indicator cover 46, the screw rod 43 moves to adjust the position of the push rod 42, then air is supplied to the device, the pneumatic mode is started, the air pressure between the first piston 3 and the second piston 4 is increased, the first piston 3 and the second piston 4 are far away, the air pressure between the first piston 3 and the second piston 4 is reduced, the moving directions are opposite, the first piston 3 and the second piston 4 move to drive the gear shaft 5 to rotate, and the gear shaft 5 drives the valve to rotate so as to control the valve;

2. when the pneumatic mode fails, the valve needs to be opened manually, the hand wheel 45 is rotated to adjust the position of the screw rod 43 until the indicator 46 reaches the left end of the indicating cover 47, the screw rod 43 drives the push rod 42 to move leftwards, the push rod 42 pushes the piston II 4 to move leftwards, the piston II 4 rotates to drive the gear shaft 5 to rotate, and then the valve is opened, when the valve needs to be closed, the hand wheel 45 is rotated to adjust the position until the indicator 46 reaches the right end of the indicating cover 47, the screw rod 43 drives the push rod 42 to move rightwards, the push rod 42 pulls the clutch seat 41, the clutch seat 41 drives the piston II 4 to move rightwards, and then the gear shaft 5.

Claims

1. An IDMO series side-mounted handwheel actuator, comprising: the device comprises a cavity (1), a base (2), a first piston (3), a second piston (4), a gear shaft (5), an air inlet hole (6) and an air outlet hole (7), wherein the cavity (1) is positioned in the middle of the base (2), the first piston (3) is connected to the left side of the cavity (1) in a sliding manner, the second piston (4) is connected to the right side of the cavity (1) in a sliding manner, the gear shaft (5) is vertically and rotatably connected to the middle of the cavity (1) and is in meshing transmission with the first piston (3) and the second piston (4), a clutch seat (41) is fixedly connected to the right side of the second piston (4), a push rod (42) is transversely connected into the clutch seat (41), a lead screw (43) is fixedly connected to the right end of the push rod (42), a lead screw sleeve (44) is sleeved on the outer side of the lead screw sleeve (43), a hand wheel (45) is fixedly connected to the outer side of the lead, the air inlet holes (6) are communicated with the middle cavity of the cavity (1), and the air outlet holes (7) are communicated with the cavities at the two sides of the cavity (1).

2. The IDMO series side-mounted handwheel actuator according to claim 1, wherein an end cap (21) is fixedly attached to the left end of said base (2), a spring (22) is fixedly attached to the right side of said end cap (21), and the right end of said spring (22) is fixedly attached to said first piston (3).

3. The IDMO series side-mounted handwheel actuator according to claim 1, wherein an indicator cover (46) is provided on the right side of the handwheel (45), and an indicator (47) is provided on the right end of the lead screw (43).

4. The IDMO series side-mounted handwheel actuator according to claim 1, wherein the gear shaft (5) is provided with a cam (51) at the upper part thereof, and the front wall of the base (2) is provided with a first adjusting screw (23) and a second adjusting screw (24) which are used for adjusting the steering limit of the cam (51) side by side.

5. An IDMO series side-mounted handwheel actuator according to claim 4, wherein the cam (51) rotates synchronously with the pinion (5) and the rotation stroke is 0 ° -90 °, the adjusting screw one (23) is used for adjusting the rotation angle of the cam (51) when the cam (51) is limited at 0 ° and the fine adjustment range is ± 5 °, the adjusting screw two (24) is used for adjusting the rotation angle of the cam (51) when the cam (51) is limited at 90 ° and the fine adjustment range is ± 5 °.

6. The IDMO series side-mounted handwheel actuator according to claim 1, wherein a clamping nut (48) is provided between the screw (43) and the push rod (42), and the screw (43) and the push rod (42) are fixedly connected by the clamping nut (48).