Quick response electric actuator

Abstract

The utility model belongs to the field of electric actuators, and particularly relates to a quick-response electric actuator which comprises an electric actuator shell, rotating holes are formed in the inner walls of the top and the bottom of the electric actuator shell, a driving rod connected with a valve rod is rotatably installed in the rotating holes, a hand wheel is fixedly sleeved on the driving rod, and the hand wheel is fixedly connected with the electric actuator shell. The hand wheel is located above the electric actuator shell, partition plates are fixedly installed on the inner walls of the front side and the rear side of the electric actuator shell, rotating holes are formed in the tops of the partition plates, rotating sleeves are rotationally installed in the rotating holes, a driving rod penetrates through the rotating sleeves, and a driving motor is fixedly installed on one side of the electric actuator shell. And a driving mechanism is arranged between the driving motor and the rotating sleeve. The valve is reasonable in design, the driving rod and the rotating sleeve can be fixedly connected and separated through the connecting mechanism and the inserting mechanism, and therefore the purpose that the valve is rapidly opened and closed through the hand wheel when the motor breaks down is achieved.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, and in particular to a fast-response electric actuator. Background Technology

[0002] An electric actuator is an actuator in a control system that uses electricity as its energy source. It receives electrical signals from regulating instruments, etc., and changes the controlled quantity according to the magnitude of the signal, thereby changing the amount of material or energy of the input or output controlled object to achieve the purpose of automatic regulation.

[0003] Currently, a Chinese patent announcement (CN221547905U) discloses a fast-start / stop electric actuator, belonging to the technical field of electric actuator equipment. It includes: an electric actuator body with heat dissipation holes on both sides; a mounting bracket fixedly installed on the inner wall of the electric actuator body on one side of the heat dissipation holes; a mounting groove inside the mounting bracket; a first spring fixedly connected inside the mounting groove; a moving block fixedly connected to the other end of the first spring; and a sliding groove on the side of the mounting bracket near the heat dissipation holes, with a dustproof baffle slidably connected inside the sliding groove. Thus, a first control rod can move the moving block and dustproof baffle downwards, adjusting the position of the dustproof baffle to block the heat dissipation holes. A limiting block is slidably inserted into the fixed groove to limit and fix the moving block, preventing dust from entering the electric actuator body through the heat dissipation holes.

[0004] In actual production, it was found that when valves need to be opened or closed due to motor failure or power failure, the self-locking performance of the worm gear and worm wheel makes it difficult to drive the rotating shaft and coupling to rotate via the handwheel. This results in the inability to quickly open and close the valves when the motor is damaged or the power is cut off. Therefore, we proposed a fast-response electric actuator to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fast-response electric actuator.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fast-response electric actuator includes an electric actuator housing. Rotating holes are provided on the top and bottom inner walls of the electric actuator housing. A drive rod connected to a valve stem is rotatably mounted within the rotating holes. A handwheel is fixedly fitted onto the drive rod, located above the electric actuator housing. Partitions are fixedly mounted on the front and rear inner walls of the electric actuator housing. A rotating hole is provided at the top of the partition, and a rotating sleeve is rotatably mounted within the rotating hole, with the drive rod passing through the rotating sleeve. A drive motor is fixedly mounted on one side of the electric actuator housing. A drive mechanism is provided between the drive motor and the rotating sleeve, and a connecting mechanism is provided between the drive rod and the rotating sleeve.

[0008] Preferably, the drive mechanism includes a worm and a worm wheel, the worm wheel is fixedly mounted on a rotating sleeve, the worm is fixedly mounted on the output shaft of the drive motor, and the worm and the worm wheel mesh with each other.

[0009] Preferably, the connecting mechanism includes a movable hole and a movable seat. The movable hole is opened on one side of the drive rod, the movable seat is slidably installed in the movable hole, and an engagement mechanism is provided between the movable seat and the rotating sleeve.

[0010] Preferably, the mating mechanism includes a slot and a socket. The slot is located on the top of the rotating sleeve, and multiple slots are arranged in a ring with equal spacing. Two sockets are fixedly installed on the bottom of the movable seat, and the sockets are adapted to the corresponding slots.

[0011] Preferably, the drive rod is provided with an adjustment mechanism, and the adjustment mechanism is connected to the movable seat.

[0012] Preferably, the adjustment mechanism includes a threaded hole, a drive screw, and a knob. The threaded hole is formed on the top inner wall of the movable hole. The drive screw is threadedly installed in the threaded hole. The bottom end of the drive screw is rotatably mounted on the movable seat. The top end of the drive screw is fixedly mounted on the knob.

[0013] Preferably, the top of the movable seat is provided with a rotating groove, the inner wall of the rotating groove is provided with an annular groove, an annular seat is fixedly installed on the drive screw, and the annular seat is rotatably connected to the annular groove.

[0014] Preferably, a limiting groove is formed on the inner wall of the front and rear sides of the movable hole, and a limiting seat is fixedly installed on the front and rear sides of the movable seat, and the limiting seat is slidably connected to the corresponding limiting groove.

[0015] The beneficial effects of this utility model are:

[0016] 1. By starting the drive motor, the drive motor can drive the worm to rotate, the worm can drive the worm wheel to rotate, the worm wheel can drive the rotating sleeve to rotate, and the rotating sleeve drives the drive rod to rotate through the socket and the moving seat. The drive rod can quickly control the valve stem to rotate, and the valve can be opened and closed quickly.

[0017] 2. When the drive motor loses power or malfunctions, the drive screw can move the movable seat and socket by the action of the knob, drive screw and threaded hole, so that the socket is separated from the slot, and the connection between the drive rod and the rotating sleeve can be released. At this time, by turning the handwheel, the handwheel can drive the drive rod to rotate, and the drive rod can quickly open and close the valve through the valve rod. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a fast-response electric actuator proposed in this utility model;

[0019] Figure 2 This is a cross-sectional perspective view of a fast-response electric actuator proposed in this utility model.

[0020] Figure 3 This is a partial three-dimensional structural diagram of a fast-response electric actuator proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of part A of a fast-response electric actuator proposed in this utility model. In the figure: 1. Electric actuator housing; 201. Rotating hole; 202. Drive rod; 203. Handwheel; 301. Partition plate; 302. Rotating hole; 303. Rotating sleeve; 401. Worm gear; 402. Drive motor; 403. Worm; 501. Moving hole; 502. Moving base; 503. Slot; 504. Socket; 601. Threaded hole; 602. Drive screw; 603. Knob. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a fast-response electric actuator.

[0024] Reference Figure 1-4A fast-response electric actuator includes an electric actuator housing 1. Rotation holes 201 are provided on the top and bottom inner walls of the electric actuator housing 1. A drive rod 202, connected to a valve stem, is rotatably mounted within the rotation holes 201. A handwheel 203 is fixedly fitted onto the drive rod 202, located above the electric actuator housing 1. A partition 301 is fixedly mounted on the front and rear inner walls of the electric actuator housing 1. A rotation hole 302 is provided at the top of the partition 301. A rotating sleeve 303 is rotatably mounted within the rotation hole 302, and the drive rod 202 passes through the rotating sleeve 303. A drive motor 402 is fixedly mounted on one side of the electric actuator housing 1. A drive mechanism is provided between the drive motor 402 and the rotating sleeve 303, and a connecting mechanism is provided between the drive rod 202 and the rotating sleeve 303.

[0025] In this embodiment, the driving mechanism includes a worm 403 and a worm wheel 401. The worm wheel 401 is fixedly mounted on the rotating sleeve 303, and the worm 403 is fixedly mounted on the output shaft of the drive motor 402. The worm 403 and the worm wheel 401 mesh with each other. By providing the worm 403 and the worm wheel 401, the drive motor 402 can drive the rotating sleeve 303 to rotate.

[0026] In this embodiment, the connecting mechanism includes a movable hole 501 and a movable seat 502. The movable hole 501 is opened on one side of the drive rod 202. The movable seat 502 is slidably installed in the movable hole 501. An insertion mechanism is provided between the movable seat 502 and the rotating sleeve 303. The insertion mechanism includes a slot 503 and a socket 504. The slot 503 is opened on the top of the rotating sleeve 303. Multiple slots 503 are arranged in a ring with equal spacing. Two sockets 504 are fixedly installed on the bottom of the movable seat 502. The sockets 504 are adapted to the corresponding slots 503. By providing sockets 504 and slots 503, the purpose of fixing and disconnecting the drive rod 202 and the rotating sleeve 303 can be realized.

[0027] In this embodiment, the drive rod 202 is provided with an adjustment mechanism, and the adjustment mechanism is connected to the movable seat 502. The adjustment mechanism includes a threaded hole 601, a drive screw 602, and a knob 603. The threaded hole 601 is opened on the top inner wall of the movable hole 501. The drive screw 602 is installed in the threaded hole 601. The bottom end of the drive screw 602 is rotatably installed on the movable seat 502. The top end of the drive screw 602 is fixedly installed with a knob 603. By providing the drive screw 602, the movement of the drive screw 602 can bring the movable seat 502 and the socket 504 to move.

[0028] In this embodiment, a rotating groove is provided on the top of the movable seat 502, and an annular groove is provided on the inner wall of the rotating groove. An annular seat is fixedly installed on the drive screw 602, and the annular seat is rotatably connected to the annular groove. By providing the annular groove and the annular seat, the drive screw 602 is rotatably installed on the movable seat 502. Limiting grooves are provided on the front and rear inner walls of the movable hole 501. Limiting seats are fixedly installed on the front and rear sides of the movable seat 502, and the limiting seats are slidably connected to the corresponding limiting grooves. By providing the limiting grooves and limiting seats, the movable seat 502 can be guided, thereby achieving the purpose of stable movement of the movable seat 502.

[0029] In this invention, by starting the drive motor 402, the drive motor 402 drives the worm gear 403 to rotate, the worm gear 403 drives the worm wheel 401 to rotate, and the worm wheel 401 drives the rotating sleeve 303 to rotate. The rotating sleeve 303 drives the drive rod 202 to rotate through the socket 504 and the movable seat 502. The drive rod 202 can quickly control the valve stem to rotate, enabling the valve to open and close quickly. When the drive motor 402 experiences a power outage or malfunction, by rotating the knob 603 and the drive screw 602, under the action of the threaded hole 601, the drive screw 602 rotates and moves simultaneously. The drive screw 602 drives the movable seat 502 and the socket 504 to move, causing the socket 504 to separate from the slot 503, thus disconnecting the drive rod 202 from the rotating sleeve 303. At this time, by rotating the handwheel 203, the handwheel 203 drives the drive rod 202 to rotate, and the drive rod 202 can quickly open and close the valve through the valve stem.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fast-response electric actuator, characterized in that, The device includes an electric actuator housing (1), on which rotating holes (201) are provided on the top and bottom inner walls. A drive rod (202) connected to a valve stem is rotatably installed in the rotating holes (201). A handwheel (203) is fixedly fitted on the drive rod (202). The handwheel (203) is located above the electric actuator housing (1). A partition plate (301) is fixedly installed on the inner walls of the front and rear sides of the electric actuator housing (1). A rotating hole (302) is provided on the top of the partition plate (301). A rotating sleeve (303) is rotatably installed in the rotating hole (302), and the drive rod (202) passes through the rotating sleeve (303). A drive motor (402) is fixedly installed on one side of the electric actuator housing (1). A drive mechanism is provided between the drive motor (402) and the rotating sleeve (303), and a connecting mechanism is provided between the drive rod (202) and the rotating sleeve (303).

2. The fast-response electric actuator according to claim 1, characterized in that, The drive mechanism includes a worm (403) and a worm wheel (401). The worm wheel (401) is fixedly mounted on the rotating sleeve (303), and the worm (403) is fixedly mounted on the output shaft of the drive motor (402). The worm (403) meshes with the worm wheel (401).

3. The fast-response electric actuator according to claim 1, characterized in that, The connecting mechanism includes a movable hole (501) and a movable seat (502). The movable hole (501) is opened on one side of the drive rod (202). The movable seat (502) is slidably installed in the movable hole (501), and an insertion mechanism is provided between the movable seat (502) and the rotating sleeve (303).

4. A fast-response electric actuator according to claim 3, characterized in that, The fitting mechanism includes a slot (503) and a socket (504). The slot (503) is opened on the top of the rotating sleeve (303), and multiple slots (503) are arranged in a ring with equal spacing. Two sockets (504) are fixedly installed on the bottom of the movable seat (502), and the sockets (504) are adapted to the corresponding slots (503).

5. A fast-response electric actuator according to claim 1, characterized in that, The drive rod (202) is provided with an adjustment mechanism, and the adjustment mechanism is connected to the movable seat (502).

6. A fast-response electric actuator according to claim 5, characterized in that, The adjustment mechanism includes a threaded hole (601), a drive screw (602), and a knob (603). The threaded hole (601) is opened on the top inner wall of the movable hole (501). The drive screw (602) is installed in the threaded hole (601). The bottom end of the drive screw (602) is rotatably mounted on the movable seat (502). The top end of the drive screw (602) is fixedly mounted with a knob (603).

7. A fast-response electric actuator according to claim 6, characterized in that, The top of the movable seat (502) is provided with a rotating groove, and the inner wall of the rotating groove is provided with an annular groove. An annular seat is fixedly installed on the drive screw (602), and the annular seat is rotatably connected to the annular groove.

8. A fast-response electric actuator according to claim 3, characterized in that, Limiting grooves are provided on the front and rear inner walls of the movable hole (501), and limiting seats are fixedly installed on the front and rear sides of the movable seat (502), with the limiting seats slidingly connected to the corresponding limiting grooves.

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