Quick-opening combined air valve device

Abstract

The invention discloses a quick-opening combined air valve device, and particularly relates to the field of ventilation and fire fighting equipment, the quick-opening combined air valve device comprises a combined air valve body, an electric actuator is arranged on one side of the combined air valve body, a quick opening and closing mechanism is arranged in the middle of the combined air valve body, and a conduction rod is arranged between the quick opening and closing mechanism and the electric actuator. Normal opening and closing of the air valve are completed through the electric executing mechanism, the quick-opening mechanism is in a standby state and does not consume energy, the full-opening action of the air valve can be completed within a very short time through acceleration of a pulley block and the resilience force of a swing arm torsional spring, and a large amount of precious time is gained for fire rescue and personnel evacuation; core driving depends on a mechanical structure, so that the problem of slow execution or failure caused by capacitor aging, motor performance reduction and the like is completely avoided; by means of the designed locking pin and unlocking slope structure, mechanical locking in the normal state and automatic mechanical unlocking in the emergency situation are ingeniously achieved, the process is smooth, and manual intervention is not needed.

Description

Technical Field

[0001] This invention relates to the field of ventilation and fire protection equipment technology, and more specifically, to a quick-opening combined air valve device. Background Technology

[0002] Combined air valves are key equipment in subway tunnel ventilation, air conditioning supply and exhaust systems in large buildings, and fire smoke extraction systems. Their core function is to control the direction and flow of air, and to open quickly in the event of a fire to remove smoke and toxic gases, creating favorable conditions for personnel evacuation and fire rescue.

[0003] Subway stations have vast public areas and long tunnels, relying entirely on mechanical ventilation. The ventilation system not only handles the daily intake of fresh air and exhaust of stale air, but also bears the crucial responsibility of fire smoke extraction. The current fire smoke extraction process typically involves the fire control center issuing a command to open the combined air valves via the environmental control cabinet's electric actuators. Once the air valves are fully open, an electrical signal is sent to the smoke extraction fan control cabinet, which then activates the smoke extraction fans to begin smoke extraction.

[0004] Currently, combined dampers commonly use electric actuators (such as electric angular actuators) as their drive source. National standards require that their full-stroke opening and closing time not exceed 30 seconds. However, this electric drive method has many inherent drawbacks and may pose serious risks in emergency situations:

[0005] From the time the command is issued to the time the damper fully opens (about 30 seconds), and then to the time the fan receives the signal and starts to accelerate to full load, the whole process takes a long time, missing the best time for smoke extraction.

[0006] The actuator is typically driven by a 220V AC power supply and contains components such as capacitors that are prone to aging. As the equipment ages, issues such as capacitor degradation and decreased motor efficiency can cause the actuator's opening and closing time to gradually slow down, sometimes far exceeding the specified 30 seconds. If the control system does not receive the valve opening signal within the specified time, it will not start the exhaust fan, causing the entire exhaust system to fail.

[0007] In the event of a fire, the electrical system itself may malfunction due to high temperature, short circuit, or other reasons, causing the electric actuator to fail to receive power and operate, thus paralyzing the system. Summary of the Invention

[0008] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a quick-opening combined air valve device. The technical problem to be solved is that the combined air valves in the prior art rely on electric opening, and have the defects of response delay and electrical reliability risk.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a quick-opening combined air valve device, comprising a combined air valve body, an electric actuator provided on one side of the combined air valve body, a quick-opening and closing mechanism provided in the middle of the combined air valve body, and a transmission rod provided between the quick-opening and closing mechanism and the electric actuator;

[0010] The rapid opening and closing mechanism includes:

[0011] Fixed pulley blocks: used to change the direction of the wire rope;

[0012] Movable pulley block: It is sleeved on the main shaft of the air valve and can rotate freely around it. It is equipped with a movable pulley arm, and the end of the movable pulley arm is provided with an unlocking slope.

[0013] Electric mechanism rotary rod: It is sleeved on the main shaft of the air valve and is rotatably connected to one end of the transmission rod through a pin. It can be driven to rotate by an electric actuator and has a locking groove.

[0014] Main shaft rotating rod assembly: It is fixedly connected to the main shaft of the air valve and rotates together with it, thereby driving the valve blade to move. It is equipped with a locking pin and a pushable locking protrusion.

[0015] Wire rope: It is fixed after passing through the fixed pulley block and the movable pulley block;

[0016] The movable pulley block, the electric mechanism swivel rod, and the main shaft swivel rod assembly are sequentially and coaxially sleeved on the main shaft of the air valve.

[0017] In a preferred embodiment, both the movable pulley block and the electric mechanism rotary rod are movably connected to the main shaft of the air valve, and the main shaft rotary rod assembly is fixedly connected to the main shaft of the air valve.

[0018] The electric mechanism rotary rod and the main shaft rotary rod assembly are provided with a separable locking structure.

[0019] In a preferred embodiment, the movable pulley assembly includes a movable pulley arm, on which a movable pulley is rotatably connected, and the movable pulley arm has an unlocking ramp on the outer side of one end of the movable pulley;

[0020] The position of the movable pulley arm corresponds to the locking structure, and is used to separate the locking structure and drive the main shaft rotating rod assembly to rotate when the movable pulley block is pulled.

[0021] The main spindle assembly includes a rotating main plate, a limiting block is fixedly provided on the outer wall of one end of the rotating main plate, a swing arm is provided on one end of the rotating main plate, one end of the swing arm is rotatably connected to the rotating main plate by a locking pin, and a swing arm torsion spring is also sleeved on the locking pin, and the two ends of the swing arm torsion spring are respectively fixed to the rotating main plate and the swing arm.

[0022] In a preferred embodiment, the locking structure includes a locking protrusion disposed on the inner wall of the swing arm and a locking groove disposed on the rotary rod of the electric mechanism that matches the locking protrusion; the locking protrusion is inserted into the locking groove to achieve locking;

[0023] When the movable pulley block is pulled, the unlocking inclined surface contacts and pushes the limit block, thereby causing the locking protrusion to exit from the locking groove.

[0024] In a preferred embodiment, the combined air valve body includes a valve housing, and the valve housing is provided with a plurality of valve blades. The width of the valve blades is adapted to the internal width of the valve housing. Each valve blade is fixedly provided with a steering shaft in the middle, and both ends of the steering shaft are rotatably connected to the inner wall of the valve housing.

[0025] A main connecting rod is provided on one side of the valve leaf. A number of secondary connecting rods, equal in number to the number of valve leaves, are rotatably connected to the main connecting rod via a second steering shaft. Both ends of the secondary connecting rod are rotatably connected to steering rods via a second steering shaft. The end of the steering rod at both ends of each secondary connecting rod that is away from the second steering shaft is rotatably connected to the adjacent first steering shaft.

[0026] In a preferred embodiment, the main shaft of the air valve is fixedly connected to a steering shaft.

[0027] In a preferred embodiment, the electric actuator includes an angular rotary motor, the output shaft of which is fixedly provided with a steering arm, and the end of the steering arm away from the output shaft of the angular rotary motor is rotatably connected to one end of the transmission rod via a pin.

[0028] The technical effects and advantages of this invention are as follows:

[0029] 1. The present invention uses an electric actuator to complete the normal opening and closing of the air valve, while the quick-opening mechanism is in standby mode and does not consume energy. Through the acceleration of the pulley group, the air valve can be fully opened in a very short time, which saves a lot of valuable time for fire rescue and personnel evacuation. The core drive relies on a mechanical structure, which completely avoids the problem of slow execution or failure caused by capacitor aging, motor performance degradation, etc.

[0030] 2. The locking pin and unlocking inclined surface structure designed in this invention ingeniously realizes mechanical locking under normal conditions and automatic mechanical unlocking in emergency situations. The process is smooth and requires no manual intervention. The entire device is mainly composed of mechanical structures, with sturdy and durable parts, simple maintenance, long service life, and low overall cost. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention (in its normal locked state).

[0032] Figure 2 For the present invention Figure 1 Enlarged view of the structure of section A in the middle.

[0033] Figure 3 For the present invention Figure 1 A schematic diagram of the rapid opening and closing mechanism for the state.

[0034] Figure 4 This is a schematic diagram of the overall structure of the present invention (open state).

[0035] Figure 5 For the present invention Figure 4 A schematic diagram of the rapid opening and closing mechanism for the state.

[0036] Figure 6 This is a schematic diagram of the overall structure of the present invention (in the instant of unlocking / opening).

[0037] Figure 7 For the present invention Figure 6 A schematic diagram of the rapid opening and closing mechanism for the state.

[0038] Figure 8 This is a side view of the quick-opening and closing mechanism of the present invention.

[0039] Figure 9 This is a schematic diagram of the electric actuator structure of the present invention.

[0040] Figure 10 This is a schematic diagram of the movable pulley block structure of the present invention.

[0041] Figure 11 This is a side view of the movable pulley block of the present invention.

[0042] Figure 12 This is a schematic diagram of the spindle rotor assembly structure of the present invention.

[0043] Figure 13 This is a side view of the spindle rotor assembly of the present invention.

[0044] The attached diagram is labeled as follows: 1 Combined air valve body, 2 Electric actuator, 3 Quick opening and closing mechanism, 4 Transmission rod;

[0045] 11 Valve housing, 12 Valve vane, 13 Main connecting rod, 14 Secondary connecting rod, 15 Steering rod, 16 Steering shaft II, 17 Steering shaft I;

[0046] 21-angle rotary motor, 22-axis steering arm;

[0047] 31 Fixed pulley block, 32 Steel wire rope, 33 Movable pulley block, 34 Electric mechanism swivel rod, 35 Main shaft swivel rod assembly, 36 Air valve main shaft;

[0048] 331 movable pulley arm, 332 movable pulley;

[0049] 351 Rotary main board, 352 Limit block, 353 Swing arm torsion spring, 354 Swing arm, 355 Locking pin. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] This invention provides, for example Figure 1-13 The quick-opening combination air valve device shown includes a combination air valve body 1, an electric actuator 2 on one side of the combination air valve body 1, a quick-opening and closing mechanism 3 in the middle of the combination air valve body 1, and a transmission rod 4 between the quick-opening and closing mechanism 3 and the electric actuator 2.

[0052] like Figure 1-2 The combined air valve body 1 includes a valve housing 11, inside which are provided multiple valve blades 12. The width of the valve blades 12 is adapted to the internal width of the valve housing 11. A steering shaft 17 is fixedly provided in the middle of each valve blade 12. Both ends of the steering shaft 17 are rotatably connected to the inner wall of the valve housing 11. A main connecting rod 13 is provided on one side of the valve blade 12. A number of secondary connecting rods 14, which are equal in number to the number of valve blades 12, are rotatably connected to the main connecting rod 13 through a steering shaft 16. Both ends of the secondary connecting rods 14 are rotatably connected to steering rods 15 through the steering shaft 16. The end of the steering rod 15 corresponding to each end of the secondary connecting rod 14 that is away from the steering shaft 16 is rotatably connected to the adjacent steering shaft 17. The main shaft 36 of the air valve is fixedly connected to one steering shaft 17.

[0053] like Figure 9 The electric actuator 2 includes an angular rotation motor 21. The output shaft of the angular rotation motor 21 is fixedly provided with a steering arm 22. The end of the steering arm 22 away from the output shaft of the angular rotation motor 21 is rotatably connected to one end of the transmission rod 4 through a pin.

[0054] like Figure 1-8 The rapid opening and closing mechanism 3 includes a fixed pulley block 31, a movable pulley block 33, an electric mechanism rotary rod 34, a main shaft rotary rod assembly 35, and a steel wire rope 32. The movable pulley block 33, the electric mechanism rotary rod 34, and the main shaft rotary rod assembly 35 are coaxially mounted on the main shaft 36 of the air valve. The electric mechanism rotary rod 34 is rotatably connected to one end of the transmission rod 4 via a pin. The steel wire rope 32 passes around the fixed pulley block 31 and the movable pulley block 33. Both the movable pulley block 33 and the electric mechanism rotary rod 34 are movably connected to the main shaft 36 of the air valve, and the main shaft rotary rod assembly 35 is fixedly connected to the main shaft 36 of the air valve. A separable locking structure is provided between the electric mechanism rotary rod 34 and the main shaft rotary rod assembly 35.

[0055] like Figure 10-11The movable pulley block 33 includes a movable pulley arm 331, on which a movable pulley 332 is rotatably connected. The movable pulley arm 331 has an unlocking ramp on the outer side of one end of the movable pulley 332. The position of the movable pulley arm 331 corresponds to the locking structure and is used to separate the locking structure and push the main shaft rotating rod assembly 35 to rotate when the movable pulley block 33 is pulled.

[0056] like Figure 12-13 The main spindle assembly 35 includes a rotating main plate 351. A limiting block 352 is fixedly provided on the outer wall of one end of the rotating main plate 351. A swing arm 354 is provided on one end of the rotating main plate 351. One end of the swing arm 354 is rotatably connected to the rotating main plate 351 through a locking pin 355. A swing arm torsion spring 353 is also sleeved on the locking pin 355. The two ends of the swing arm torsion spring 353 are respectively fixed to the rotating main plate 351 and the swing arm 354. The locking structure includes a locking protrusion provided on the inner wall of the swing arm 354 and a locking groove provided on the electric mechanism rotary rod 34 that matches the locking protrusion. The locking protrusion is inserted into the locking groove to achieve locking. When the movable pulley group 33 is pulled, the unlocking inclined surface contacts and pushes the limiting block 352, thereby causing the locking protrusion to exit from the locking groove.

[0057] Under normal circumstances (such as) Figure 1-3 Under the force of the swing arm torsion spring 353, the locking protrusion of the swing arm 354 is inserted into the locking groove corresponding to the electric mechanism rotary rod 34, and the two are rigidly connected, so that the power of the electric actuator 2 can be transmitted to the air valve main shaft 36; the wire rope 32 passes through the fixed pulley group 31 and the movable pulley group 33 in sequence, and is finally fixed at an anchor point.

[0058] The daily opening and closing of the air valve is driven by the electric actuator 2: the electric actuator 2 rotates → drives the electric mechanism rotary rod 34 to rotate → due to the connection of the locking protrusion, it drives the main shaft rotary rod assembly 35 to rotate → drives the air valve main shaft 36 to rotate → realizes the opening and closing of the valve leaf 12; during this process, the movable pulley group 33 is not affected;

[0059] The movable pulley block 33 rotates at high speed around the main shaft 36 of the air valve; during the rotation, the unlocking inclined surface on the movable pulley arm 331 contacts the limiting block 352 on the main shaft rotating rod assembly 35; the action of the inclined surface generates a radial component force, forcing the locking protrusion to exit from the locking groove of the electric mechanism rotating rod 34, thereby achieving mechanical unlocking;

[0060] After unlocking, the movable pulley arm 331 continues to push the limit block 352, thereby driving the main shaft rotating rod assembly 35 and the main shaft of the air valve 36 to rotate at high speed together, instantly opening the air valve to the fully open position in a very short time; after the air valve is fully open, the smoke exhaust fan can be started in time to exhaust smoke.

[0061] After the fire is extinguished, the system needs to be manually reset. First, the air valve is electrically closed. Under the action of the swing arm torsion spring 353, the locking protrusion will automatically re-insert into the corresponding locking slot of the rotating main board 351 to achieve mechanism reset and wait for the next instruction.

[0062] Through mechanical design, technologies such as pulley block force enhancement, mechanical interlocking, and inclined plane unlocking are integrated into one, creatively solving the technical problem of rapid and reliable opening of large air valves in emergency situations, and has extremely high invention and promotion value.

[0063] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0064] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0065] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-open combined air valve device comprising a combined air valve body (1), characterized in that: The combined air valve body (1) is provided with an electric actuator (2) on one side, and a quick opening and closing mechanism (3) is arranged in the middle of the combined air valve body (1), and a transmission rod (4) is arranged between the quick opening and closing mechanism (3) and the electric actuator (2); The quick opening and closing mechanism (3) comprises a fixed pulley set (31), a movable pulley set (33), an electric mechanism rotating rod (34), a main shaft rotating rod assembly (35) and a steel wire rope (32); the movable pulley set (33), the electric mechanism rotating rod (34) and the main shaft rotating rod assembly (35) are coaxially sleeved on the air valve main shaft (36) in sequence; The electric mechanism rotating rod (34) is rotatably connected to one end of the transmission rod (4) through a pin shaft; the steel wire rope (32) passes through the fixed pulley set (31) and the movable pulley set (33).

2. A quick-opening combined damper assembly according to claim 1, wherein: The movable pulley set (33) and the electric mechanism rotating rod (34) are movably connected with the air valve main shaft (36), and the main shaft rotating rod assembly (35) is fixedly connected with the air valve main shaft (36); The electric mechanism rotating rod (34) and the main shaft rotating rod assembly (35) are provided with a separable locking structure.

3. A quick-opening combined damper valve apparatus according to claim 2, wherein: The movable pulley set (33) comprises a movable pulley arm (331), a movable pulley (332) is rotatably connected to the movable pulley arm (331), and an unlocking slope is formed on the outer side of one end of the movable pulley arm (331) where the movable pulley (332) is arranged; The position of the movable pulley arm (331) corresponds to the locking structure, and is used for separating the locking structure and pushing the main shaft rotating rod assembly (35) to rotate when the movable pulley set (33) is pulled; The main shaft rotating rod assembly (35) comprises a rotating main plate (351), a limiting block (352) is fixedly arranged on the outer wall of one end of the rotating main plate (351), a swing arm (354) is arranged on one end of the rotating main plate (351), the swing arm (354) is rotatably connected with the rotating main plate (351) through a locking pin (355), a swing arm torsional spring (353) is further sleeved on the locking pin (355), and the two ends of the swing arm torsional spring (353) are fixedly connected with the rotating main plate (351) and the swing arm (354) respectively.

4. A quick-opening combined damper valve apparatus according to claim 3, wherein: The locking structure comprises a clamping protrusion arranged on the inner wall of the swing arm (354) and a clamping groove arranged on the electric mechanism rotating rod (34) and matched with the clamping protrusion; the clamping protrusion is inserted into the clamping groove to realize locking; When the movable pulley set (33) is pulled, the unlocking slope contacts and pushes the limiting block (352), so that the clamping protrusion is withdrawn from the clamping groove.

5. A multiple combined air valve assembly according to claim 1, wherein: The combined air valve body (1) comprises a valve shell (11), a plurality of valve leaves (12) are arranged in the valve shell (11), a turning shaft one (17) is fixedly arranged in the middle of each valve leaf (12), and the two ends of the turning shaft one (17) are rotatably connected with the inner wall of the valve shell (11). The valve leaf (12) is provided with a main connecting rod (13) on one side, the main connecting rod (13) is rotatably connected with a plurality of secondary connecting rods (14) corresponding to the number of valve leaves (12) through a second turning shaft (16), both ends of the secondary connecting rod (14) are rotatably connected with a turning rod (15) through the second turning shaft (16), and the corresponding turning rods (15) at both ends of each secondary connecting rod (14) are rotatably connected with adjacent first turning shafts (17) at one end away from the second turning shaft (16).

6. A multiple combined air valve assembly according to claim 5, wherein: The air valve main shaft (36) is fixedly connected with a first turning shaft (17).

7. A multiple combined air valve assembly according to claim 1, wherein: The electric actuator (2) comprises an angular rotation motor (21), a turning arm (22) is fixedly arranged on the output shaft of the angular rotation motor (21), and one end of the turning arm (22) away from the output shaft of the angular rotation motor (21) is rotatably connected with one end of the transmission rod (4) through a pin shaft.

Images