Full-automatic smoke exhaust fire damper actuating mechanism

Abstract

The utility model discloses a full-automatic smoke exhaust fire damper actuating mechanism which comprises a bottom plate, a cover plate and a motor, a main shaft penetrates through the cover plate and the bottom plate to be connected with a valve plate, the main shaft is provided with a main shaft cam, a main shaft single claw, a torsion spring and a fixed plate from bottom to top, and the cover plate is provided with an electromagnet, a movable plate, a lock shell, an action switch and a reset switch. A switch blocking piece is arranged on the lock shell, the motor drives the gear set to rotate so that the main shaft single claw can rotate to open the valve, a temperature sensor installation opening is formed in the cover plate on one side of the movable plate, a temperature sensor penetrates through the cover plate and the bottom plate and is connected with the cover plate through an S-shaped fixing piece, and a binding post is arranged on one side of the bottom plate. The valve is reasonable in structural design, reliable in use performance, rapid in actuating mechanism action, sensitive in response and high in working stability, the electromagnet can be controlled by a control center power supply to act to close the valve, the movable rod can be shifted on site to close the valve, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fire dampers, in particular to a full-automatic smoke exhaust fire damper actuator. Background Art

[0002] With the enhancement of fire awareness and the country's emphasis on fire safety, smoke exhaust fire dampers need to be installed in the ventilation systems of various industries and civil buildings to protect the safety of people's lives and property. The opening and closing of the smoke exhaust fire damper is controlled by an actuator. A valve shaft is set on the actuator structure, and the smoke exhaust fire damper is driven to open and close by the rotation of the valve shaft. Therefore, the performance of the actuator affects the action of the smoke exhaust fire damper. The actuator of the existing smoke exhaust fire damper has a long reset time, slow actuator action speed, sluggish response, and poor working stability, which affects the use of the smoke exhaust fire damper. Summary of the invention

[0003] The utility model aims to solve the above technical problems and provide a fully automatic smoke exhaust fire damper actuator.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is: a fully automatic smoke exhaust fire damper actuator, including a base plate, a cover plate, and a motor. The main shaft passes through the cover plate and the base plate and is connected to the valve plate. It is characterized in that: the main shaft is provided with a main shaft cam, a main shaft single claw, a torsion spring, and a fixed plate from bottom to top. The cover plate is provided with an electromagnet, a movable plate, a lock shell, an action switch, and a reset switch. The lock shell is provided with a switch baffle. One end of the tension spring is connected to the front end of the lock shell, and the other end is provided on the cover plate. An L-shaped block is provided on one side of the main shaft single claw on the cover plate. One end of the torsion spring is provided on the L-shaped block, and the other end is provided on the fixed plate. A gear set is provided on the base plate. The motor drives the gear set to rotate so that the main shaft single claw rotates to open the valve. A temperature sensor installation port is provided on the cover plate on one side of the movable plate. The temperature sensor passes through the cover plate and the base plate and is connected to the cover plate through an S-shaped fixed plate. A terminal is provided on one side of the base plate.

[0005] Preferably: a limiting protrusion and a groove are provided on the single claw of the main shaft, and a limiting block is provided on the lock housing.

[0006] Preferably, a card block is provided at the front end of the lock housing, a card slot is provided at one side of the movable plate, and the right end of the movable plate extends out of a cover plate for manual operation.

[0007] Preferably: the gear set includes a motor gear arranged on the motor output shaft, and the base plate is connected with a first gear shaft, a second gear shaft, and a third gear shaft through bearings, the first gear shaft is provided with a first gear A and a first gear B in sequence from top to bottom, the second gear shaft is provided with a second gear B and a second gear A in sequence from top to bottom, the third gear shaft is provided with a third gear B and a third gear A in sequence from top to bottom, the first gear B is meshed with the motor gear, the first gear A is meshed with the second gear B, the second gear A is meshed with the third gear B, and the third gear A is meshed with the main shaft cam.

[0008] Preferably: a limiting groove is provided on the third gear B, a limiting column is provided on the third gear A, and the limiting column is located in the limiting groove.

[0009] Preferably, the main shaft cam is configured as a sector gear, and the angle of the sector tooth area is less than 180°.

[0010] Preferably: a switch stopper is arranged on a cover plate on one side of the action switch, the switch stopper is connected to the third gear shaft via a bolt, and the switch stopper is D-shaped.

[0011] Preferably, the switch baffle is arranged in a 7-shape, and the front end of the switch baffle is located at one side of the reset switch.

[0012] Compared with the traditional structure, the utility model has the following beneficial effects: reasonable structural design, reliable performance, using motor as power source, the actuator moves quickly, responds sensitively, and has high working stability. The power supply of the control center can control the electromagnet to move and close the valve, or the movable rod can be toggled on site to close the valve. The operation is convenient, and the lever principle is used to make the electromagnet movement or manual operation easier and more labor-saving; the action switch and reset switch are opened and closed by the D-type switch block and the 7-shaped switch block, and the working process is stable and reliable; the temperature sensor is fixed on the cover plate with an S-type fixing plate, which is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the gear set on the bottom plate of the utility model;

[0015] In the figure: 1. Motor, 2. Spindle single claw, 21. Limiting protrusion, 22. Groove, 3. L-shaped block, 4. Torsion spring, 5. Spindle, 6. Cover, 7. Electromagnet, 8. Movable plate, 9. Tension spring, 10. Switch block, 11. Action switch, 12. Reset switch, 13. Switch baffle, 14. Lock shell, 141. Limiting block, 142. Card block, 15. Temperature sensor, 16. S-shaped fixing plate, 17. Bottom plate, 18. Spindle cam, 19. Gear set, 191. Motor gear, 192. First gear B, 193. First gear A, 194. Second gear B, 195. Second gear A, 196. Third gear B, 1961. Limiting groove, 197. Third gear A, 1971. Limiting column, 20. Terminal. DETAILED DESCRIPTION

[0016] The utility model is further described below.

[0017] See attached Figure 1-2 The fully automatic smoke exhaust fire damper actuator includes a bottom plate 17, a cover plate 6, and a motor 1. The main shaft 5 passes through the cover plate 6 and the bottom plate 17 and is connected to the valve plate. The main shaft 5 is provided with a main shaft cam 18, a main shaft single claw 2, a torsion spring 4, and a fixed plate from bottom to top. The cover plate 6 is provided with an electromagnet 7, a movable plate 8, a lock shell 14, an action switch 11, and a reset switch 12. The lock shell 14 is provided with a switch baffle 13. One end of the tension spring 9 is connected to the front end of the lock shell 14, and the other end is provided On the cover plate 6, an L-shaped stopper 3 is arranged on one side of the main shaft single claw 2 on the cover plate 6, one end of the torsion spring 4 is arranged on the L-shaped stopper 3, and the other end is arranged on the fixed plate, and a gear set 19 is arranged on the bottom plate 17. The motor 1 drives the gear set 19 to rotate so that the main shaft single claw 2 rotates to open the valve. A temperature sensor installation port is arranged on the cover plate 6 on one side of the movable plate 8. The temperature sensor 15 passes through the cover plate 6 and the bottom plate 17, and is connected to the cover plate 6 through the S-shaped fixing plate 16. A terminal is arranged on one side of the bottom plate 17.

[0018] In this preferred embodiment, a limiting protrusion 21 and a groove 22 are provided on the main shaft single claw 2 , and a limiting block 141 is provided on the lock housing 14 .

[0019] In this preferred embodiment, a block 142 is provided at the front end of the lock housing 14, a slot is provided at one side of the movable plate 8, and the right end of the movable plate 8 extends out of the cover plate for manual operation.

[0020] In this preferred embodiment, the gear group 19 includes a motor gear 191 arranged on the motor output shaft, and the base plate 17 is connected to a first gear shaft, a second gear shaft, and a third gear shaft through bearings. The first gear shaft is provided with a first gear A193 and a first gear B192 in sequence from top to bottom, the second gear shaft is provided with a second gear B194 and a second gear A195 in sequence from top to bottom, and the third gear shaft is provided with a third gear B196 and a third gear A197 in sequence from top to bottom. The first gear B192 is meshed with the motor gear 191, the first gear A193 is meshed with the second gear B194, the second gear A195 is meshed with the third gear B196, and the third gear A197 is meshed with the main shaft cam 18.

[0021] In this preferred embodiment, a limiting groove 1961 is provided on the third gear B196 , and a limiting column 1971 is provided on the third gear A197 , and the limiting column 1971 is located in the limiting groove 1961 .

[0022] In this preferred embodiment, the main shaft cam 18 is configured as a sector gear, and the angle of the sector tooth area is less than 180°.

[0023] In this preferred embodiment, a switch stopper 10 is provided on the third gear shaft via bolt connection. The switch stopper 10 is D-shaped and is located at one side of the action switch 11 .

[0024] In this preferred embodiment, the switch baffle 13 is arranged in a 7-shape, and the front end of the switch baffle 13 is located at one side of the reset switch.

[0025] In specific implementation, the utility model is mainly used in smoke exhaust valves, fire dampers, and smoke exhaust fire dampers, and can accurately control the opening and closing of the valve. Manual control: The mechanism is fixed on the valve, the handle is installed on the main shaft, and the handle is turned counterclockwise to open the valve; push one end of the movable plate 8 to the side close to the electromagnet 7 to close the valve.

[0026] Electric control: The mechanism is fixed on the valve, and the handle is installed on the main shaft. Connect the 24V power supply, the motor 1 rotates counterclockwise, the first gear A193 and the first gear B192 rotate clockwise, driving the second gear B194 and the second gear A195 to rotate counterclockwise, and the third gear B196 rotates clockwise. When the limit column 1971 moves from one end of the limit groove 1961 to the other end, the third gear A197 rotates clockwise to drive the main shaft cam 18 to rotate counterclockwise, and drives the main shaft single claw 2 to rotate counterclockwise through the main shaft 5 to open the valve. When the valve blade opens to 90°, the limit block 141 on the lock housing 14 is located in the groove 22 of the main shaft single claw 2, and the straight surface of the switch block 10 is parallel to the action switch 11. The action switch 11 is closed. Under the action of the switch block 13, the reset switch 12 is turned on, the motor 1 reverses, and drives the limit column 1971 to rotate to the initial position through the gear set 19, and the mechanism is reset.

[0027] The control center connects the 24V power supply to the remote control mechanism, the electromagnet 6 instantly absorbs one end of the movable plate 8, the block 142 of the lock shell 14 disengages from the slot of the movable plate 8, and the lock shell 14 swings to make the limit block 141 disengage from the groove 22. Under the action of the torsion spring 4, the main shaft single claw 2 rotates clockwise, the valve is closed, and the L-shaped block 3 on the bottom plate 6 limits the rotation position of the main shaft single claw 2.

[0028] The cover plate 6 is provided with a temperature sensor 15. When the indoor temperature reaches 70°C or 280°C, the fusible piece melts, the core rod of the temperature sensor 15 drops instantly, and the top pressure cap pushes the movable plate 8 to swing to the side of the electromagnet 7, so that the main shaft single claw 2 is separated from the lock housing 14, and the valve is closed. The temperature sensor is connected to the cover plate through an S-shaped fixing plate, and only two screws need to be screwed at the bend, which is easy to install.

[0029] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A fully automatic smoke exhaust fire damper actuator, comprising a base plate (17), a cover plate (6), and a motor (1), wherein a main shaft (5) passes through the cover plate (6) and the base plate (17) and is connected to the valve plate, and is characterized in that: The main shaft (5) is provided with a main shaft cam (18), a main shaft single claw (2), a torsion spring (4), and a fixed plate from bottom to top; the cover plate (6) is provided with an electromagnet (7), a movable plate (8), a lock housing (14), an action switch (11), and a reset switch (12); the lock housing (14) is provided with a 7-shaped switch baffle (13); the front end of the switch baffle (13) is located on one side of the reset switch (12); one end of the tension spring (9) is connected to the front end of the lock housing (14), and the other end is provided on the cover plate (6); the main shaft single claw (11) on the cover plate (6) 2) An L-shaped stopper (3) is provided on one side, one end of a torsion spring (4) is provided on the L-shaped stopper (3), and the other end is provided on the fixed plate, a gear set (19) is provided on the bottom plate (17), the motor (1) drives the gear set (19) to rotate so that the main shaft single claw (2) rotates to open the valve, a temperature sensor installation opening is provided on the cover plate (6) on one side of the movable plate (8), the temperature sensor (15) passes through the cover plate (6) and the bottom plate (17), and is connected to the cover plate (6) through an S-shaped fixing plate (16), and a terminal (20) is provided on one side of the bottom plate (17).

2. The fully automatic smoke exhaust fire damper actuator according to claim 1 is characterized in that: A limit protrusion (21) and a groove (22) are provided on the main shaft single claw (2), and a limit block (141) is provided on the lock housing (14).

3. The fully automatic smoke exhaust fire damper actuator according to claim 1 is characterized in that: A clamping block (142) is provided at the front end of the lock housing (14), a clamping slot is provided on one side of the movable plate (8) located at the lock housing (14), and the right end of the movable plate (8) extends out of the cover plate (6) for manual operation.

4. The fully automatic smoke exhaust fire damper actuator according to claim 1 is characterized in that: The gear set (19) comprises a motor gear (191) arranged on the output shaft of the motor; a first gear shaft, a second gear shaft and a third gear shaft are connected to the base plate (17) via bearings; the first gear shaft is provided with a first gear A (193) and a first gear B (192) in sequence from top to bottom; the second gear shaft is provided with a second gear B (194) and a second gear A (195) in sequence from top to bottom; the third gear shaft is provided with a third gear B (196) and a third gear A (197) in sequence from top to bottom; the first gear B (192) meshes with the motor gear (191); the first gear A (193) meshes with the second gear B (194); the second gear A (195) meshes with the third gear B (196); and the third gear A (197) meshes with the main shaft cam (18).

5. The fully automatic smoke exhaust fire damper actuator according to claim 4 is characterized in that: A limiting groove (1961) is provided on the third gear B (196), and a limiting column (1971) is provided on the third gear A (197), wherein the limiting column (1971) is located in the limiting groove (1961).

6. The fully automatic smoke exhaust fire damper actuator according to claim 1 is characterized in that: The main shaft cam (18) is configured as a sector gear, and the angle of the sector tooth area is less than 180°.

7. The fully automatic smoke exhaust fire damper actuator according to claim 1 is characterized in that: A switch stopper (10) is provided on a cover plate (6) on one side of the action switch (11); the switch stopper (10) is connected to the third gear shaft via a bolt; and the switch stopper (10) is D-shaped.

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