Combined air valve with spring reset function

Abstract

The utility model discloses a combined air valve with a spring reset function, and relates to the technical field of mechanical engineering. According to the technical scheme, the combined air valve is composed of a spring reset mechanism and a plurality of single air valve bodies, the spring reset mechanism and the combined air valve body are connected through a linkage assembly, the side, away from the linkage assembly, of the combined air valve body is installed on a bottom frame, the mechanical spring function is added, and the problem that under the power-off condition or the temperature control switch fusing condition, the temperature control switch is broken is solved. And the valve is automatically closed or opened.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, and particularly relates to a combined air valve with a spring reset function. Background Technique

[0002] The ventilation air volume in subways and tunnels is very large, and the valve specifications are relatively large. In order to ensure the air quality inside the subway station and improve the air circulation, it is necessary to set up large-air-volume ventilation ducts inside the subway station. In order to ensure the air volume balance inside the ventilation ducts, air valves for adjustment are set at the connection ends of the ventilation ducts. It is usually composed of an air valve body and a driver, and is used to adjust and control the air flow. It has the advantages of high reliability, convenient operation, high precision, etc., so it is widely used in buildings.

[0003] In the prior art, in order to enable the combined air valve to have a fire protection function, a fire protection function actuator is installed on the single valve, and the purpose is achieved through series wiring and parallel wiring.

[0004] The above prior art solutions have the following defects: Although installing an actuator can achieve the fire protection function, in the case of power failure, the use of the device will be affected. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a combined air valve with a spring reset function, which is used to solve the problems mentioned in the background technique.

[0006] The above object of the utility model is achieved through the following technical solutions:

[0007] A combined air valve with a spring reset function includes a bottom frame, the bottom frame is divided into a plurality of unit ports, a single air valve is installed on each of the plurality of unit ports, and the plurality of single air valves are all connected to a spring reset mechanism through a linkage assembly.

[0008] In a preferred example of the utility model, it can be further configured as: the spring reset mechanism includes a motor, the output end of the motor is connected with a reduction gearbox, the internal gear of the reduction gearbox is rotatably connected with a rotating rod, the rotating rod is hinged with the linkage assembly, and there is also an energy storage spring, and the energy storage spring is connected with the internal gear of the reduction gearbox.

[0009] In a preferred example of the utility model, it can be further configured as: the motor is electrically connected with an electromagnetic clutch, and both the electromagnetic clutch and the motor are connected to a controller.

[0010] In a preferred example of the utility model, it can be further configured as: a temperature control switch is provided at the single air valve, and the temperature control switch is electrically connected with the controller.

[0011] In a preferred embodiment, the present utility model can be further configured as follows: The linkage assembly includes a pull rod, one end of the pull rod is hinged to the rotating rod, several connecting rods are hinged to the rotating rod, several link mechanisms are rotatably connected to the single vane damper, the link mechanism includes several vane rotating rods and rotating rods hinged together, and the connecting rod is fixedly connected to the vane rotating rod.

[0012] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0013] 1. At normal temperature, the temperature control switch is in a closed state. When the ambient temperature reaches the set temperature, the temperature control switch disconnects, which is equivalent to the control center cutting off the power supply to the electromagnetic clutch.

[0014] 2. After the control center cuts off the power supply to the electromagnetic clutch, the electromagnetic clutch loses its braking effect on the motor. The energy storage spring releases the force because it was wound up by the motor control before, and all single vane dampers are reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the first perspective of the present technical solution;

[0016] Figure 2 is the overall structural schematic diagram of the second perspective of the present technical solution;

[0017] Figure 3 is the partial structural schematic diagram of the present technical solution.

[0018] Reference numerals: 1. Spring reset mechanism; 11. Motor; 12. Reduction gearbox; 13. Rotating rod; 2. Single vane damper; 3. Linkage assembly; 31. Pull rod; 32. Connecting rod; 33. Vane rotating rod; 34. Rotating rod; 4. Bottom frame; 5. Energy storage spring; 6. Electromagnetic clutch; 7. Temperature control switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] As Figures 1 - 3 shown, a combined vane damper with a spring reset function disclosed in the present technical solution includes a bottom frame 4. The bottom frame 4 is divided into several unit openings, which are 2 in the illustration. Single vane dampers 2 are installed on the unit openings. The bottom frame 4 is divided into units, and several single vane dampers 2 are combined into a combined vane damper. The bottom frame 4 is modularly divided, which is convenient for manufacturing, maintenance and repair. The spring reset mechanism 1 and several single vane dampers 2 are connected through a linkage assembly 3. The single vane damper 2 is installed on the bottom frame 4 on the side away from the linkage assembly 3. The spring reset mechanism 1 has a power-off mechanical force reset function, and all single vane dampers 2 are reset through mechanical force reset.

[0021] The spring return mechanism 1 includes a motor 11, where the motor 11 can have a built-in locking function. The output end of the motor 11 is connected to a reduction gearbox 12. The internal gears of the reduction gearbox 12 are rotationally connected to a rotating rod 13. The rotating rod 13 is hinged to the linkage assembly 3. Additionally, there is a storage spring 5. As the motor 11 rotates, the storage spring 5 is wound up. The storage spring 5 is connected to the internal gears of the reduction gearbox 12. The tail of the motor 11 has an electromagnetic chuck. The storage spring 5 is installed on a gear shaft inside the reduction gearbox 12. When the motor 11 is powered to rotate forward, the electromagnetic chuck at the tail of the motor 11 is separated through the circuit board. The motor 11 operates, and the gear transmission causes the spring to wind up. When the in-place travel switch acts, the electromagnetic chuck attracts and locks the position. When the motor 11 is powered to rotate in reverse, the storage spring 5 releases its force during reverse rotation.

[0022] When power is cut off, the motor 11 loses its locking function, the storage spring 5 releases its force, and the main shaft is reset through the gears, thus returning to the reset state.

[0023] The motor 11 is electrically connected to an electromagnetic clutch 6, and both the electromagnetic clutch 6 and the motor 11 are connected to the controller. Through the set controller, all the electrical appliances in the device can be intelligently connected.

[0024] A temperature control switch 7 is provided at the single vane damper 2, and the temperature control switch 7 is electrically connected to the controller. When the temperature reaches the setting of the temperature control switch 7, the temperature control switch 7 conducts to the controller, and the controller controls the motor 11 to rotate in reverse, and the storage spring 5 releases its force to achieve the reset of the single vane damper 2.

[0025] The linkage assembly 3 includes a pull rod 31. One end of the pull rod 31 is hinged to the rotating rod 13. A number of connecting rods 32 are hinged to the rotating rod 13, and there are 2 in the illustration. A number of link mechanisms are rotationally connected to the single vane damper 2. The link mechanism includes a number of blade rotating rods 33 and rotating rods 34 hinged together. The connecting rod 32 is fixedly connected to the blade rotating rod 33. Through the set linkage assembly 3, the opening and closing of the vane damper can be achieved.

[0026] The implementation principle of this embodiment is as follows: The motor 11 is powered on and operates, driving the rotating rod 13 to rotate through the reduction gearbox 12, and at the same time storing energy in the storage spring 5. The rotation of the rotating rod 13 drives the linkage assembly 3 to operate, enabling the valve to open in place while the storage spring 5 completes energy storage. At this time, the motor 11 is powered off and stops operating. When the motor 11 is powered off, the electromagnetic clutch 6 is powered on and works to lock the motor 11, and the valve is in the open state. The control circuit of the electromagnetic clutch 6 supplies power to the electromagnetic clutch 6 through the temperature control switch.

[0027] When the fire control center cuts off the power supply of the electromagnetic clutch 6, the motor 11 is unlocked. The rotating rod 13 rotates under the action of the storage spring 5, driving the linkage assembly 3 to move to close the valve.

[0028] The temperature control switch 7 is a normally closed switch. When the temperature reaches the preset temperature, the switch automatically disconnects, serving the same function as cutting off the power supply to the control center.

[0029] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A combined air valve with a spring reset function, comprising a bottom frame (4), the bottom frame (4) being divided into a plurality of unit ports, and a single air valve (2) being installed on each of the plurality of unit ports, characterized in that, A plurality of the single air valves (2) are all connected to the spring return mechanism (1) through a linkage assembly (3).

2. The combination air valve with a spring reset function according to claim 1, characterized in that, The spring return mechanism (1) includes a motor (11), an output end of the motor (11) is connected with a reduction gearbox (12), an internal gear of the reduction gearbox (12) is rotatably connected with a rotating rod (13), the rotating rod (13) is hinged to the linkage assembly (3), and an energy storage spring (5) is further provided, and the energy storage spring (5) is connected with the internal gear of the reduction gearbox (12).

3. The combined air valve with a spring reset function according to claim 2, characterized in that, One end of the motor (11) which is electrically connected is provided with an electromagnetic clutch (6), and both the electromagnetic clutch (6) and the motor (11) are connected to a controller.

4. The combined air valve with a spring reset function according to claim 3, characterized in that, A temperature control switch (7) is provided at the single air valve (2), and the temperature control switch (7) is electrically connected to the controller.

5. The combination air valve with a spring reset function according to claim 2, characterized in that, The linkage assembly (3) includes a pulling rod (31), one end of the pulling rod (31) is hinged to the rotating rod (13), a plurality of connecting rods (32) are hinged to the rotating rod (13), a plurality of link mechanisms are rotatably connected to the single air valve (2), and each link mechanism includes a plurality of blade rotating rods (33) and rotating rods (34) which are hinged together, and the connecting rod (32) is fixedly connected to the blade rotating rod (33).

Images