Double-door-leaf type fireproof temperature sensing element

Abstract

The utility model discloses a double-door-leaf type fireproof temperature sensing element. The two ends of the cross beam are connected with a valve body, and the cross beam is arranged above the symmetry axis of a valve plate in parallel; the fixing shaft vertically penetrates through the cross beam; the two door leaves are arranged on the fixing shaft in a sleeving mode and can rotate around the fixing shaft; the lower temperature sensing pieces are connected with the door leaves in a clamped mode; the upper temperature sensing sheet is used for connecting the two lower temperature sensing sheets; one end of the spring is hooked with the door leaf; the other end of the spring is hooked with the cross beam; when the external temperature reaches a certain temperature, the upper temperature sensing piece is separated from any lower temperature sensing piece, in the initial state, the two door leaves located above the symmetry axis rotate around the fixing shaft under the action of the elastic force of the spring and are opened outwards, the two door leaves are clamped on the valve plate, and the valve plate is closed to achieve the fireproof isolation function. According to the utility model, double temperature sensing elements are adopted, so that double insurance temperature sensing is more sensitive, take-off is more timely, fireproof performance is good, and fire spreading can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to temperature sensing devices, and more particularly to a double-door type fireproof temperature sensing element. Background Technology

[0002] Check valves used for direct exhaust from public flues or exterior walls place higher demands on the fire resistance performance of their internal fire protection devices. However, existing fire protection devices are complex in structure, expensive to manufacture, prone to failure, and have poor fire resistance. As a result, the flue cannot effectively prevent fire, and odor transfer occurs frequently, filling the room with unpleasant smells, which seriously affects the health of family members and the safety of people's lives and property.

[0003] Therefore, the above problems urgently need to be solved. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this utility model is to provide a double-door type fireproof temperature sensing element, which adopts dual temperature sensing elements and has the advantages of double insurance for more sensitive temperature sensing, more timely activation, good fireproof performance and effective prevention of fire spread.

[0005] Technical Solution: To achieve the above objectives, this utility model discloses a double-door fireproof temperature sensing element, including a crossbeam with both ends connected to the valve body and arranged parallel to the valve plate's axis of symmetry, a fixed shaft vertically passing through the crossbeam, two door leaves sleeved on the fixed shaft and rotatable around the fixed shaft, a lower temperature sensing plate engaged with each door leaf, an upper temperature sensing plate for connecting the two lower temperature sensing plates, and a spring with one end hooked to the door leaf and the other end hooked to the crossbeam; when the external temperature reaches a certain temperature, the upper temperature sensing plate separates from either lower temperature sensing plate, and in the initial state, the two door leaves located above the axis of symmetry rotate around the fixed shaft under the action of the spring force, opening outwards, and the two door leaves are engaged with the valve plate, causing the valve plate to close and achieve the fireproof isolation function.

[0006] Optionally, the upper end of the fixed shaft is connected to the crossbeam, and the lower end of the fixed shaft is connected to the crossbeam by a diagonal brace.

[0007] Optionally, the diagonal brace includes an upper horizontal plate, an inclined plate, and a lower horizontal plate, wherein the upper horizontal plate is bolted to the crossbeam, and the lower horizontal plate is connected to the lower end of the fixed shaft.

[0008] Optionally, a torsion spring is sleeved on the fixed shaft, with both ends of the torsion spring abutting against the side surface of the door leaf.

[0009] Optionally, the lower temperature sensor is an L-shaped temperature sensor, and the upper horizontal piece of the lower temperature sensor is bonded to the surface of the upper temperature sensor.

[0010] Optionally, a connecting hole is provided on the lower horizontal piece of the lower temperature sensor, and a first hook adapted to the connecting hole is provided on the door leaf.

[0011] Optionally, the door leaf is provided with a second hook for hooking the spring, and the crossbeam is provided with a third hook for hooking the spring.

[0012] Beneficial effects: Compared with the prior art, this utility model has the following significant advantages: This utility model utilizes a double-door structure design. When the external temperature reaches a certain level, the upper and lower temperature sensing plates separate. In the initial state, the door leaf located above the axis of symmetry rotates around a fixed axis under the action of a spring, and the door leaf is locked onto the valve plate, causing the valve plate to close tightly and achieve fireproof isolation. This utility model uses dual temperature sensing elements, which have advantages such as double-safety temperature sensing, more timely activation, good fire resistance, and effective prevention of fire spread. The door leaf in this utility model has high strength, which can form strong pressure on the valve plate, causing the valve plate to close and achieve fireproof isolation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the connection between the present invention and the valve plate;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0015] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 . Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, this utility model discloses a double-leaf type fireproof temperature sensing element that is installed on a valve body with a double-opening valve plate to prevent backflow of smoke caused by the opening of the valve plate. The double-leaf type fireproof temperature sensing element is centrally located and does not affect the movement of the valve plate. Simultaneously, the height of the valve body protects the double-leaf type fireproof temperature sensing element from damage and enhances its fireproof reliability.

[0018] like Figure 2 and Figure 3As shown, the double-door fireproof temperature sensing element includes a crossbeam 1, a fixed shaft 2, door panels 3, a lower temperature sensing plate 4, an upper temperature sensing plate 5, a spring 6, a diagonal brace 7, and a torsion spring 8. The crossbeam 1 is a bent plate spanning the valve body opening. Both ends of the crossbeam 1 are bolted to the valve body. The crossbeam 1 is positioned parallel to the valve plate's axis of symmetry above it. The fixed shaft 2 is vertically inserted through the crossbeam 1. The upper end of the fixed shaft 2 is connected to the crossbeam 1 via a nut. The lower end of the fixed shaft 2 is connected to the crossbeam 1 via a diagonal brace 7. The diagonal brace 7 includes an upper horizontal plate 701, a diagonal plate 702, and a lower horizontal plate 703. The upper horizontal plate 701 is bolted to the crossbeam 1, and the lower horizontal plate 703 is connected to the lower end of the fixed shaft 2. Two door panels 3 are fitted onto the fixed shaft 2 and can rotate around the fixed shaft 2. In the initial state, the two door panels 3 are closed and positioned above the axis of symmetry. Each door leaf is fitted with a corresponding lower temperature sensor 4, which is L-shaped. The upper horizontal piece 401 of the lower temperature sensor 4 is bonded to the surface of the upper temperature sensor 5. A connecting hole 403 is provided on the lower horizontal piece 402 of the lower temperature sensor 4. A first hook 301 is provided on the door leaf 3, which is adapted to the connecting hole 403. The upper temperature sensor 5 is connected to two lower temperature sensors 4. One end of the spring 6 is hooked to the door leaf 3, and the other end of the spring 6 is hooked to the crossbeam 1. A second hook 302 is provided on the door leaf 3 to hook the spring 6, and a third hook 101 is provided on the crossbeam 1 to hook the spring 6. A torsion spring 8 is sleeved on the fixed shaft 2, and the two ends of the torsion spring 8 abut against the side surface of the door leaf 3. When the external temperature reaches a certain temperature, the upper temperature sensor 5 separates from either of the lower temperature sensors 4. The copper sheet standard melting point temperature control of this utility model meets the standards approved by the national fire department. When the operating temperature reaches the melting temperature, the fuse breaks, and the temperature control is accurate and the response is sensitive. In the initial state, the two door leaves 3 located above the axis of symmetry rotate around the fixed axis 2 under the action of the spring 6 and open outward. The two door leaves 3 are stuck on the valve plate, so that the valve plate is closed to achieve the fireproof isolation function.

[0019] A valve body with a double-door fire-resistant temperature-sensing element can be used in public flues for exhausting cooking fumes, preventing backdraft, and as part of fire prevention systems in residential kitchens. It's suitable for kitchen range hoods and public flue fire protection. Normally, the valve body is in a "closed" state to prevent odors from entering the public flue and to protect family health. When the range hood is operating, the valve plate with the double-door fire-resistant temperature-sensing element is fully open, allowing for unobstructed smoke exhaust. When the air temperature reaches the melting point, the upper and lower temperature-sensing plates inside the double-door fire-resistant temperature-sensing element separate, opening the doors in opposite directions to close the valve plate and prevent external fire damage. It can also be used on exterior walls: the valve body with the double-door fire-resistant temperature-sensing element can effectively prevent small animals, birds, and dust from entering the range hood when used for direct exhaust from exterior walls.

Claims

1. A double-door type fireproof temperature sensing element, characterized in that: It includes a crossbeam (1) connected to the valve body at both ends and arranged parallel to the valve plate above the axis of symmetry, a fixed shaft (2) vertically passing through the crossbeam, two door leaves (3) sleeved on the fixed shaft and rotatable around the fixed shaft, a lower temperature sensor (4) that is engaged with each door leaf, an upper temperature sensor (5) for connecting the two lower temperature sensors, and a spring (6) that is engaged with the door leaf (3) at one end and with the crossbeam (1) at the other end. When the external temperature reaches a certain temperature, the upper temperature sensor (5) separates from any of the lower temperature sensors (4). In the initial state, the two door leaves (3) located above the axis of symmetry rotate around the fixed shaft (2) under the elastic force of the spring (6) and open outward. The two door leaves (3) are engaged on the valve plate, so that the valve plate is closed to achieve the fireproof isolation function.

2. The double-door type fireproof temperature sensing element according to claim 1, characterized in that: The upper end of the fixed shaft (2) is connected to the crossbeam (1), and the lower end of the fixed shaft (2) is connected to the crossbeam (1) by a diagonal brace (7).

3. The double-door type fireproof temperature sensing element according to claim 2, characterized in that: The diagonal brace (7) includes an upper horizontal plate (701), an inclined plate (702), and a lower horizontal plate (703), wherein the upper horizontal plate (701) is connected to the crossbeam (1) by bolts, and the lower horizontal plate (703) is connected to the lower end of the fixed shaft (2).

4. The double-door type fireproof temperature sensing element according to claim 1, characterized in that: A torsion spring (8) is sleeved on the fixed shaft (2), and the two ends of the torsion spring (8) abut against the side surface of the door leaf (3).

5. The double-door type fireproof temperature sensing element according to claim 1, characterized in that: The lower temperature sensor (4) is an L-shaped temperature sensor, and the upper horizontal piece (401) of the lower temperature sensor (4) is bonded to the surface of the upper temperature sensor (5).

6. The double-door type fireproof temperature sensing element according to claim 5, characterized in that: The lower horizontal piece (402) of the lower temperature sensor (4) is provided with a connection hole (403), and the door leaf (3) is provided with a first hook (301) that matches the connection hole (403).

7. The double-door type fireproof temperature sensing element according to claim 1, characterized in that: The door leaf (3) is provided with a second hook (302) for hooking the spring (6), and the crossbeam (1) is provided with a third hook (101) for hooking the spring (6).

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