CN111692401A

CN111692401A - Electric actuator with automatic heat preservation device inside

Info

Publication number: CN111692401A
Application number: CN202010565586.1A
Authority: CN
Inventors: 吴小卫; 郭峰; 李德军
Original assignee: YANGZHOU WEIPENG AUTOMATION TECHNOLOGY CO LTD
Current assignee: YANGZHOU WEIPENG AUTOMATION TECHNOLOGY CO LTD
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-09-22

Abstract

The invention relates to the technical field of actuators and discloses an electric actuator internally provided with an automatic heat preservation device. This electric actuator who includes automatic heat preservation device, through first heat preservation chamber and the second heat preservation chamber that sets up on the executor casing, be convenient for to the effect of executor casing and outside wall, the inside temperature of executor casing has been avoided receiving the direct outside problem of being transmitted to the executor casing of extremely low ambient temperature, through the heating wire that sets up on the heater, be convenient for to the effect of actuator casing continuous heating, increase the inside electronic component normal use temperature of executor casing, avoid under extremely low ambient temperature, some electronic components of executor casing are because unable adaptation low temperature operational environment.

Description

Electric actuator with automatic heat preservation device inside

Technical Field

The invention relates to the technical field of actuators, in particular to an electric actuator internally provided with an automatic heat preservation device.

Background

The actuator is an essential important component in an automatic control system, and has the functions of receiving a control signal sent by a controller and changing the size of a controlled medium so as to maintain a controlled variable at a required value or within a certain range, the actuator can be divided into three types of pneumatic, hydraulic and electric actuators according to the energy form, the pneumatic actuator uses compressed air as energy, and the actuator is characterized by simple structure, reliable and stable action, large output thrust, convenient maintenance, fire and explosion prevention and low price, so that the actuator can be widely applied to the production processes of chemical engineering, paper making, oil refining and the like, can be conveniently matched with a passive instrument for use, and even when the electric instrument or a computer is used for control, only an electric signal is converted into a standard air pressure signal of 20-100kPa by an electric-to-electric converter or an electric valve positioner, the pneumatic actuator can still be used, the electric actuator is convenient to take energy, the signal transmission is rapid, but the structure is complex, the explosion-proof performance is poor, the hydraulic actuator is basically not used in the production processes of chemical engineering, oil refining and the like, and the hydraulic actuator has the characteristic of great output thrust.

The actuator for controlling the valve can accurately lead the valve to move to any position, although most of the actuators are used for opening and closing the valve, the design of the actuators at present is far beyond the simple opening and closing function, and the actuators comprise a position sensing device, a moment sensing device, an electrode protection device, a logic control device, a digital communication module, a PID control module and the like, wherein the devices are all arranged in a compact shell; capacitance values of the capacitors are changed, so that some circuits are unstable; the contact of the relay is frozen, the action of the relay is blocked, in addition, lubricating grease in mechanical transmission can be solidified when the temperature is extremely low, the normal work of the electric actuator is seriously influenced, for a plurality of faults caused by extremely low environmental temperature, at present, electric actuator manufacturers at home and abroad do not have a solution for avoiding the faults by improving the internal temperature environment of the actuator, and generally users can solve the problems by improving the external environmental temperature of the work of the electric actuator, for example, a heat-preserving cover or a heat-preserving sleeve is arranged outside the electric actuator, a heat-preserving facility is arranged in the cover, the low-temperature environment outside the shield cover is isolated, and the temperature of the actuator in the cover is improved; or install heating device in the executor outside, and then improve the inside low temperature environment of executor indirectly through improving executor external environment temperature, and these methods that influence the inside temperature of executor indirectly through improving executor external environment temperature invest in big, the energy consumption is high, waste time and energy, it is loaded down with trivial details to install, the adaptability is weak, it is poor to keep warm the effect, it is very inconvenient to make electric actuator work in outdoor open air environment, the temperature range that electric actuator is suitable for low temperature work has been restricted, for overcoming electric actuator trouble phenomenon is many under present extreme low temperature environment, the fault rate is high, outside heat preservation measure invests in greatly, the energy consumption is high, waste time and energy, it is loaded down with trivial details to install, the adaptability is weak, it is poor to keep warm the effect.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the electric actuator internally provided with the automatic heat preservation device, which has the advantages of convenience in installation and good heat preservation effect, and solves the problems that the failure rate of the electric actuator is increased sharply and the liquid crystal display screen has low response speed, display ghost and hysteresis frequently appear due to the fact that certain electronic components in the electric actuator cannot adapt to a low-temperature working environment at extremely low ambient temperature; capacitance values of the capacitors are changed, so that some circuits are unstable; the contact of the relay is frozen, the action of the relay is blocked, and in addition, lubricating grease in mechanical transmission can be solidified at extremely low temperature, so that the normal work of the electric actuator is seriously influenced.

(II) technical scheme

In order to realize the purposes of convenient installation and good heat preservation effect, the invention provides the following technical scheme:

an electric actuator with an automatic heat preservation device inside comprises an actuator shell, wherein a connecting box is fixedly installed on the left side of the actuator shell, a manual wheel is movably installed on the left side of the connecting box, a gear disc is movably installed inside the actuator shell, a worm which penetrates through the connecting box, extends into the actuator shell and is meshed with the gear disc is fixedly installed on the right side of the manual wheel, a supporting handle is fixedly installed inside the actuator shell, a first gear which is located on the right side of the supporting handle is fixedly installed on the right side of the worm, a motor case is fixedly installed on the right side of the actuator shell, a motor is fixedly installed inside the motor case, a second gear which is meshed with the first gear is fixedly installed at an output shaft of the motor, a capacitor case is fixedly installed at the top of the actuator shell, and a capacitor is fixedly installed inside the capacitor case, the bottom fixed mounting of executor casing has the connection base, the bottom movable mounting of connection base has the thread bush, the bottom fixed mounting of thread bush has flange, the top fixed mounting of executor casing has the left control box of capacitance case, the inside fixed mounting of control box has the control cabinet, the top fixed mounting of control cabinet has the heater, the top fixed mounting of heater has the heating wire that extends to the inside of executor casing, the right side fixed mounting of heating wire has the temperature-sensing ware, first heat preservation chamber has been seted up to the inside of executor casing, the second heat preservation chamber has been seted up to the inside of control cabinet.

Preferably, the connecting box and the actuator shell are of an integrated structure, the connecting box is composed of two connecting pipes, and the right side of the manual wheel is inserted into the left side of the connecting box and is in rotary connection with the connecting relation of the manual wheel.

Preferably, a rotating shaft rotatably connected with the actuator shell is arranged in the gear disc, the front side and the rear side of the rotating shaft are respectively inserted into the inner front wall and the inner rear wall of the actuator shell, and the worm penetrates through the connecting box.

Preferably, the connection relationship between the right side of the worm and the support handle is a rotary connection, the first gear is sleeved on the right side of the worm, and the motor case and the actuator shell are of an integrated structure.

Preferably, the second gear is sleeved outside an output shaft of the motor, the capacitor box and the actuator casing are of an integrated structure, and the top of the connecting base is attached to the bottom of the actuator casing. Preferably, the connection relationship between the threaded sleeve and the connection base is a rotational connection, a connection hole corresponding to the threaded sleeve is formed in the connection flange, and a fixing bolt hole is formed in the connection flange.

Preferably, the control box and the actuator shell are of an integrated structure, and the bottom of the control console is attached to the inner bottom wall of the control box.

Preferably, the heating wire penetrates through the top of the actuator shell, the bottom of the temperature sensor is attached to the inner bottom wall of the actuator shell, and the first heat preservation cavity is communicated with the second heat preservation cavity.

(III) advantageous effects

Compared with the prior art, the invention provides an electric actuator with an automatic heat preservation device, which has the following beneficial effects:

1. this contain automatic heat preservation device's electric actuator, through the connection base that sets up on the executor casing, be convenient for play the effect of support to the executor casing, and connect the base and guaranteed its bottom seal's effect, through the wall of connecting the base to executor casing bottom, the heat retaining effect has been improved, avoided its inside temperature to receive under the extremely low ambient temperature, some electronic components in the executor casing can make the problem that the fault rate of executor casing sharply risees because unable adaptation low temperature operational environment, through the thread bush that sets up on the connection base, be convenient for when loading and unloading the executor casing, the thread bush can reach the auto-lock fast and dismantle convenient effect, the worker can realize the dismouting through the rotation to the thread bush, guaranteed its maintenance effect of being convenient for.

2. This electric actuator who includes automatic heat preservation device, through first heat preservation chamber and the second heat preservation chamber that sets up on the executor casing, be convenient for to the effect of executor casing and outside wall, the inside temperature of executor casing has been avoided receiving the direct outside problem of being transmitted to the executor casing of extremely low ambient temperature, through the heating wire that sets up on the heater, be convenient for to the effect of actuator casing continuous heating, increase the inside electronic component normal use temperature of executor casing, avoid under extremely low ambient temperature, some electronic components of executor casing are because unable adaptation low temperature operational environment.

Drawings

FIG. 1 is a schematic structural view of an electric actuator with an automatic heat preservation device therein according to the present invention;

fig. 2 is a schematic cross-sectional structural view of an electric actuator with an automatic heat preservation device therein according to the present invention.

In the figure: the device comprises an actuator shell 1, a connecting box 2, a manual wheel 3, a gear disc 4, a worm 5, a support handle 6, a first gear 7, a motor box 8, a motor 9, a second gear 10, a capacitance box 11, a capacitance box 12, a connection base 13, a threaded sleeve 14, a connection flange 15, a control box 16, a control console 17, a heater 18, a heating wire 19, a temperature sensor 20, a first heat preservation cavity 21 and a second heat preservation cavity 22.

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.

Referring to fig. 1-2, an electric actuator with an automatic heat preservation device inside comprises an actuator housing 1, a connection box 2 is fixedly installed on the left side of the actuator housing 1, the connection box 2 and the actuator housing 1 are of an integrated structure, the connection box 2 is composed of two connection pipes, a manual wheel 3 is movably installed on the left side of the connection box 2, the right side of the manual wheel 3 is inserted into the left side of the connection box 2 and is rotatably connected with the connection box, a gear disc 4 is movably installed inside the actuator housing 1, a rotating shaft rotatably connected with the actuator housing 1 is arranged inside the gear disc 4, the front side and the rear side of the rotating shaft are respectively inserted into the inner front wall and the inner rear wall of the actuator housing 1, a worm 5 penetrating through the connection box 2 and extending into the actuator housing 1 and meshed with the gear disc 4 is fixedly installed on the right side of the manual wheel 3, the worm 5 penetrates through the, a support handle 6 is fixedly arranged in the actuator shell 1, the right side of the worm 5 is rotationally connected with the support handle 6, a first gear 7 positioned on the right side of the support handle 6 is fixedly arranged on the right side of the worm 5, the first gear 7 is sleeved on the right side of the worm 5, a motor box 8 is fixedly arranged on the right side of the actuator shell 1, the motor box 8 and the actuator shell 1 are of an integrated structure, a motor 9 is fixedly arranged in the motor box 8, a second gear 10 meshed with the first gear 7 is fixedly arranged at an output shaft of the motor 9, the second gear 10 is sleeved outside the output shaft of the motor 9, a capacitance box 11 is fixedly arranged at the top of the actuator shell 1, the capacitance box 11 and the actuator shell 1 are of an integrated structure, a capacitor 12 is fixedly arranged in the capacitance box 11, and a connecting base 13 is fixedly arranged at the bottom of the actuator shell 1, the top of the connecting base 13 is attached to the bottom of the actuator casing 1, the bottom of the connecting base 13 is movably provided with a threaded sleeve 14, the connection relationship between the threaded sleeve 14 and the connecting base 13 is rotational connection, the bottom of the threaded sleeve 13 is fixedly provided with a connecting flange 15, the inside of the connecting flange 15 is provided with a connecting hole corresponding to the threaded sleeve 14, the inside of the connecting flange 15 is provided with a fixing bolt hole, the top of the actuator casing 1 is fixedly provided with a control box 16 on the left side of the capacitance box 11, the control box 16 and the actuator casing 1 are of an integrated structure, the inside of the control box 16 is fixedly provided with a control console 17, the bottom of the control console 17 is attached to the inner bottom wall of the control box 16, the top of the control console 17 is fixedly provided with a heater 18, the top of the heater 18 is fixedly provided with a heating wire 19 extending to the inside of the actuator, heating wire 19's right side fixed mounting has temperature-sensing ware 20, and temperature-sensing ware 20's bottom laminating is at the interior diapire of executor casing 1, and first heat preservation chamber 21 has been seted up to executor casing 1's inside, and second heat preservation chamber 22 has been seted up to control box 16's inside, and first heat preservation chamber 21 communicates with each other with the inside in second heat preservation chamber 22.

To sum up, this contain electric actuator of automatic heat preservation device, through the connection base 13 that sets up on the executor casing 1, be convenient for play the effect of support to executor casing 1, and connect base 13 and guaranteed its bottom sealed effect, through the wall of connecting base 13 to executor casing 1 bottom, the heat retaining effect has been improved, avoided its inside temperature to receive under the extremely low ambient temperature, some electronic components in the executor casing 1 can make the problem that the fault rate of executor casing 1 sharply rises because unable adaptation low temperature operational environment, through the thread bush 14 that sets up on connecting base 13, be convenient for when loading and unloading to executor casing 1, thread bush 14 can reach the fast and convenient effect of dismantlement of auto-lock, the worker can realize the dismouting through the rotation to thread bush 14, guaranteed its maintenance effect of being convenient for.

Moreover, the first heat preservation cavity 21 and the second heat preservation cavity 22 which are arranged on the actuator shell 1 are convenient for separating the actuator shell 1 from the outside, the problem that the temperature inside the actuator shell 1 is directly transmitted to the outside of the actuator shell 1 due to extremely low ambient temperature is avoided, the effect of continuously heating the actuator shell 1 is convenient through the heating wire 19 which is arranged on the heater 18, the normal use temperature of electronic components inside the actuator shell 1 is increased, and the situation that some electronic components of the actuator shell 1 cannot adapt to the low-temperature working environment at extremely low ambient temperature is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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. An electric actuator with an automatic heat preservation device inside, which comprises an actuator shell (1), and is characterized in that: the left side fixed mounting of executor casing (1) has connecting box (2), the left side movable mounting of connecting box (2) has manual wheel (3), the inside movable mounting of executor casing (1) has toothed disc (4), the right side fixed mounting of manual wheel (3) has through connection case (2) and extends to inside of executor casing (1) and with toothed disc (4) engaged with worm (5), the inside fixed mounting of executor casing (1) has support handle (6), the right side fixed mounting of worm (5) has first gear (7) that are located support handle (6) right side, the right side fixed mounting of executor casing (1) has motor case (8), the inside fixed mounting of motor case (8) has motor (9), the output shaft department fixed mounting of motor (9) has second gear (10) with first gear (7) engaged with, the top of the actuator shell (1) is fixedly provided with a capacitor box (11), the inside of the capacitor box (11) is fixedly provided with a capacitor (12), the bottom of the actuator shell (1) is fixedly provided with a connecting base (13), the bottom of the connecting base (13) is movably provided with a threaded sleeve (14), the bottom of the threaded sleeve (13) is fixedly provided with a connecting flange (15), the top of the actuator shell (1) is fixedly provided with a control box (16) on the left side of the capacitor box (11), the inside of the control box (16) is fixedly provided with a control console (17), the top of the control console (17) is fixedly provided with a heater (18), the top of the heater (18) is fixedly provided with a heating wire (19) extending to the inside of the actuator shell (1), and the right side of the heating wire (19) is fixedly provided with a temperature sensor (20), a first heat preservation cavity (21) is formed in the actuator shell (1), and a second heat preservation cavity (22) is formed in the control box (16).

2. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the connecting box (2) and the actuator shell (1) are of an integrated structure, the connecting box (2) is composed of two connecting pipes, and the right side of the manual wheel (3) is inserted into the left side of the connecting box (2) and is rotationally connected with the connecting relation of the manual wheel and the connecting box.

3. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the gear plate is characterized in that a rotating shaft rotationally connected with the actuator shell (1) is arranged in the gear plate (4), the front side and the rear side of the rotating shaft are respectively inserted into the inner front wall and the inner rear wall of the actuator shell (1), and the worm (5) penetrates through the connecting box (2).

4. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the right side of the worm (5) is in rotational connection with the support handle (6), the first gear (7) is sleeved on the right side of the worm (5), and the motor case (8) and the actuator shell (1) are of an integrated structure.

5. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the second gear (10) is sleeved outside an output shaft of the motor (9), the capacitance box (11) and the actuator shell (1) are of an integrated structure, and the top of the connecting base (13) is attached to the bottom of the actuator shell (1).

6. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the connection relation between the threaded sleeve (14) and the connection base (13) is rotational connection, a connection hole corresponding to the threaded sleeve (14) is formed in the connection flange (15), and a fixing bolt hole is formed in the connection flange (15).

7. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: control box (16) and executor casing (1) are integrated structure, the bottom of control cabinet (17) is laminated with the inner bottom wall of control box (16).

8. The electric actuator with automatic heat preservation device as claimed in claim 1, wherein: the heating wire (19) penetrates through the top of the actuator shell (1), the bottom of the temperature sensor (20) is attached to the inner bottom wall of the actuator shell (1), and the first heat preservation cavity (21) is communicated with the inside of the second heat preservation cavity (22).