CN215445256U

CN215445256U - Torque control mechanism of valve electric device

Info

Publication number: CN215445256U
Application number: CN202121300501.3U
Authority: CN
Inventors: 沈涛
Original assignee: Changzhou Lankong Valve Control Co ltd
Current assignee: Changzhou Lankong Valve Control Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-07
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a torque control mechanism of a valve electric device, wherein a motor is arranged at the left end of a shell, a hand wheel cover is connected at the right end of the shell, the output end of the motor is connected with a worm, one end of the worm penetrates into the shell, a worm sleeve is further connected onto the worm, the left end of the worm is connected with a disc spring, the left end of the disc spring is connected with a bearing, the right end of the worm extends into the hand wheel cover, the right end of the worm is connected with a first elastic pin, and a combined screw is further arranged on the inner side of the hand wheel cover; the utility model changes the structure of the existing torque control mechanism, the opening cam and the closing cam are arranged on the transmission shaft and are respectively matched with the opening microswitch and the closing microswitch, when the torque of the transmission shaft is overlarge, the bracket generates angular displacement to enable the microswitch to act, so that a power supply is cut off, the device has the advantages of simple structure, convenience in operation, effective protection of an electric device and high safety.

Description

Torque control mechanism of valve electric device

Technical Field

The utility model relates to the technical field of a torque control mechanism of a valve electric device, in particular to a torque control mechanism of a valve electric device.

Background

The valve electric actuator is a driving device for opening and closing the valve, is matched with the valve for use, and has a very wide application range, such as industries of metallurgy, chemical engineering, coal gas, water supply and drainage and the like. The electric device and the valve have high quality requirements in the industries or departments, and the products have stable and reliable performance, high control precision, overload protection, remote centralized control and other functions. The mold cavity is typically controlled by controlling the torque of the valve motor in an electrical control. The electric device of the torque control mechanism also lacks a protection structure, and therefore, a torque control mechanism of the electric device of the valve is introduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a torque control mechanism for an electric valve actuator, which solves the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: a torque control mechanism of a valve electric device comprises a motor, a shell and a hand wheel cover, wherein the motor is arranged at the left end of the shell, the hand wheel cover is connected with the right end of the shell, the output end of the motor is connected with a worm, one end of the worm penetrates into the shell, the worm is also connected with a worm sleeve, the left end of the worm is connected with a disc spring, the left end of the disc spring is connected with a bearing, the right end of the worm extends into the hand wheel cover, the right end of the worm is connected with a first elastic pin, the inner side of the hand wheel cover is also provided with a combined screw, the inner side of the hand wheel cover is connected with a switch bracket, the inner side of the hand wheel cover is connected with a microswitch, the inner side of the hand wheel cover is further connected with a second bearing, the right end of the hand wheel cover is provided with a cover plate, the right side of the hand wheel cover is connected with a hand wheel locking device, and the right end of the hand wheel cover is connected with a hand wheel.

As a further optimization of the technical scheme, a third bearing and an O-shaped gasket are arranged at the joint of the motor and the shell, the third bearing is arranged on a shaft at the output end of the motor, and the O-shaped gasket is arranged at the left end of the worm to play a role in sealing.

As the further optimization of the technical scheme, the left end of the worm is connected with an oil seal, and one side of the oil seal is provided with a retaining ring for a shaft, so that the sealing effect is achieved.

As a further optimization of the technical scheme, a left end cover is arranged at the left end of the shell, a cushion is arranged on the inner side of the left end cover, and a second O-shaped gasket is arranged on one side of the left end cover to play a role in sealing.

As a further optimization of the technical scheme, the right end of the worm is connected with a first bearing, a check ring for a second shaft is arranged on the inner side of the first bearing, a first oil seal is arranged on the right end of the worm, a first O-shaped ring is arranged on the inner side of the first oil seal, a right gland is arranged on the right end of the shell, and the right gland is connected to the shell through a first screw to play a role in sealing.

As a further optimization of the technical scheme, a third O-shaped gasket is arranged at the right end of the worm sleeve to play a role in sealing.

Compared with the prior art, the utility model has the beneficial effects that: the utility model changes the structure of the existing torque control mechanism, the opening cam and the closing cam are arranged on the transmission shaft and are respectively matched with the opening microswitch and the closing microswitch, when the torque of the transmission shaft is overlarge, the bracket generates angular displacement to enable the microswitch to act, so that a power supply is cut off, the device has the advantages of simple structure, convenience in operation, effective protection of an electric device and high safety.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the hand wheel cover of the present invention;

fig. 3 is a right-side view structural schematic diagram of the hand wheel after disassembly.

In the figure: 30. a housing; 31. a motor; 34. a third bearing; 37. an O-shaped gasket; 40. a second O-ring gasket; 43. oil sealing; 42. a left end cap; 44. a retainer ring for a shaft; 45. a bearing; 46. a disc spring; 47. a worm; 48. a worm sleeve; 55. a first bearing; 56. a second shaft retainer ring; 57. a first oil seal; 59. a right gland; 60. a first screw; 62. a first elastic pin; 65. a combination screw; 68. a switch bracket; 70. a microswitch; 71. a second bearing; 74. a hand wheel cover; 75. a cover plate; 77. a hand wheel locking device; 78. a handwheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or state relationships based on the orientations or state relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that a referred mechanism or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a valve electric actuator moment control mechanism, includes motor 31, casing 30, hand wheel lid 74, the left end of casing 30 is equipped with left end lid 42, the inboard of left end lid 42 is equipped with cushion 41, one side of left end lid 42 is equipped with second O type packing ring 40, the left end at casing 30 is installed to motor 31, the junction with casing 30 of motor 31 is equipped with third bearing 34, O type packing ring 37, and third bearing 34 sets up on the axle of motor 31 output, O type packing ring 37 sets up the left end at worm 47, hand wheel lid 74 is connected at the right-hand member of casing 30, the output of motor 31 is connected with worm 47, the left end of worm 47 is connected with oil blanket 43, and one side of oil blanket 43 is equipped with axle retaining ring 44, the right-hand member of worm 47 is connected with first bearing 55, the inboard of first bearing 55 is equipped with second axle retaining ring 56, the right-hand member of worm 47 is equipped with first oil blanket 57, and the inside of the first oil seal 57 is provided with a first O-ring, the right end of the housing 30 is provided with a right gland 59, the right gland 59 is connected to the housing 30 through a first screw 60, one end of the worm 47 penetrates into the housing 30, the worm 47 is further connected with a worm sleeve 48, the right end of the worm sleeve 48 is provided with a third O-ring, the left end of the worm 47 is connected with a disc spring 46, the left end of the disc spring 46 is connected with a bearing 45, the right end of the worm 47 extends into a hand wheel cover 74, the right end of the worm 47 is connected with a first elastic pin 62, the inside of the hand wheel cover 74 is further provided with a combination screw 65, the inside of the hand wheel cover 74 is connected with a switch bracket 68, the inside of the hand wheel cover 74 is connected with a micro switch 70, the inside of the hand wheel cover 74 is further connected with a second bearing 71, the right end of the hand wheel cover 74 is provided with a cover plate 75, and the right side of the hand wheel cover 74 is connected with a hand wheel locking device 77, the right end of the hand wheel cover 74 is connected with a hand wheel 78, and the hand wheel 78 rotates.

Specifically, when in use, the device mainly comprises an output shaft of the motor 31, a worm 47 and a microswitch 70; the hand wheel 78 is connected with a transmission shaft, the other end of the transmission shaft is connected with the worm 47, the lower end of the transmission shaft is connected with a crank, the upper end of the transmission shaft is fixedly sleeved with a switch support 68, the switch support 68 comprises an opening direction support and a closing direction support, the microswitch 70 comprises an opening direction microswitch and a closing direction microswitch which are overlapped, the transmission shaft is sleeved with a opening direction cam and a closing direction cam, the front end of the opening direction cam and the contact end of the opening direction microswitch are in the same horizontal plane, the front end of the closing direction cam and the contact end of the closing direction cam are in the same horizontal plane, the opening direction cam and the closing direction cam are respectively matched with the opening direction microswitch and the closing direction microswitch through the arrangement on the transmission shaft, when the torque of the transmission shaft is overlarge, the support generates angular displacement to enable the microswitch to act, and therefore the power supply is cut off.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a valve electric actuator moment control mechanism, includes motor (31), casing (30), handwheel lid (74), its characterized in that: the left end at casing (30) is installed to motor (31), the right-hand member at casing (30) is connected to handwheel lid (74), the output of motor (31) is connected with worm (47), the inside to casing (30) is run through to the one end of worm (47), still be connected with worm cover (48) on worm (47), the left end of worm (47) is connected with dish spring (46), the left end of dish spring (46) is connected with bearing (45), the right-hand member of worm (47) extends to handwheel lid (74), and the right-hand member of worm (47) is connected with first elastic pin (62), the inboard of handwheel lid (74) still is equipped with combination screw (65), the inboard of handwheel lid (74) is connected with switch support (68), the inboard of handwheel lid (74) is connected with micro-gap switch (70), the inboard of handwheel lid (74) still is connected with second bearing (71), the right end of hand wheel lid (74) is equipped with apron (75), the right side of hand wheel lid (74) is connected with hand wheel locking means (77), the right-hand member of hand wheel lid (74) is connected with hand wheel (78).

2. The torque control mechanism of an electrically operated valve device of claim 1, wherein: and a third bearing (34) and an O-shaped gasket (37) are arranged at the joint of the motor (31) and the shell (30), the third bearing (34) is arranged on a shaft at the output end of the motor (31), and the O-shaped gasket (37) is arranged at the left end of the worm (47).

3. The torque control mechanism of an electrically operated valve device of claim 1, wherein: the left end of the worm (47) is connected with an oil seal (43), and one side of the oil seal (43) is provided with a shaft retainer ring (44).

4. The torque control mechanism of an electrically operated valve device of claim 1, wherein: the left end of casing (30) is equipped with left end lid (42), the inboard of left end lid (42) is equipped with cushion (41), one side of left end lid (42) is equipped with second O type packing ring (40).

5. The torque control mechanism of an electrically operated valve device of claim 1, wherein: the right-hand member of worm (47) is connected with first bearing (55), the inboard of first bearing (55) is equipped with retaining ring (56) for the second shaft, the right-hand member of worm (47) is equipped with first oil blanket (57), and the inboard of first oil blanket (57) is equipped with first O type circle, the right-hand member of casing (30) is equipped with right gland (59), right gland (59) are connected on casing (30) through first screw (60).

6. The torque control mechanism of an electrically operated valve device of claim 1, wherein: and a third O-shaped gasket is arranged at the right end of the worm sleeve (48).