Locking device for heat insulation type fireproof valve

Abstract

The utility model discloses a locking device for a heat insulation type fire damper, which comprises a frame, two heat insulation plates are arranged in the frame, a clamping groove is formed in the center of one side of each heat insulation plate, push rod devices are arranged in the two sides of the frame, and each push rod device comprises a first motor, a first gear, a first toothed plate and a clamping block. A sealing device is arranged in the lower end of the frame and comprises a second motor, a second transmission rod, a second gear, a second toothed plate, a connecting plate, a third connecting rod and a sealing plate. And a second motor, a second transmission rod and a sealing plate are arranged, the second motor is started to drive the second transmission rod to rotate, so that the sealing plate moves upwards indirectly, the sealing plate seals a gap between the lower end of the heat insulation plate and the frame, the sealing performance of the fireproof valve is improved, and the fireproof capacity of the fireproof valve is further improved.

Description

Technical Field

[0001] The utility model relates to the field of fire dampers, and particularly to a locking device for a heat-insulating fire damper. Background Art

[0002] In building ventilation systems and air-conditioning systems, fires occur frequently. In order to strictly control the spread of fire, a device that automatically blocks the air flow to reduce the spread of fire is required. The fire damper is one of them. The fire damper is a safety device that can effectively prevent the spread of fire and high-temperature toxic smoke through the air duct during a fire. The fire damper is triggered to close by a temperature sensor detecting the temperature or a fusible alloy melting at high temperature. However, when the traditional fire damper is closed, due to the relatively large high-temperature air pressure generated in the fire area, the fire-proof board of the fire damper is easily flushed open, and due to the gap at the rotating rod connected to the fire-proof board when the traditional fire damper is closed, the sealing performance is relatively poor, resulting in a poor fire-proof effect. Therefore, a locking device for a heat-insulating fire damper is proposed. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a locking device for a heat-insulating fire damper, which can solve the problems that the fire-proof board of the traditional fire damper is easily flushed open and the sealing performance is relatively poor.

[0004] To achieve the above purpose, a locking device for a heat-insulating fire damper is provided, which includes a frame. Two heat-insulating plates are arranged inside the frame. A clamping groove is formed at the central position on one side of the heat-insulating plate. Push rod devices are arranged inside both sides of the frame. The push rod device includes a first motor, a first gear, a first toothed plate, and a clamping block.

[0005] A sealing device is arranged inside the lower end of the frame. The sealing device includes a second motor, a second transmission rod, a second gear, a second toothed plate, a connecting plate, a third connecting rod, and a sealing plate.

[0006] According to the locking device for a heat-insulating fire damper, it is characterized in that: a housing is fixedly connected to the central position at the upper end of the frame. A double-shaft motor is fixedly connected to the central position inside the housing. Two output shafts of the double-shaft motor are fixedly connected with a first transmission rod. The other end of the first transmission rod is fixedly connected with a driving bevel gear. The surface of the driving bevel gear is meshed and connected with a driven bevel gear. The lower end of the driven bevel gear is fixedly connected with a first connecting rod. The lower end of the first connecting rod is fixedly connected with the heat-insulating plate.

[0007] According to the locking device for a heat-insulating fire damper, it is characterized in that: a second connecting rod is fixedly connected to the lower end of the heat-insulating plate.

[0008] According to the locking device for a heat-insulating fire damper described above, it is characterized in that: the output shaft of the first motor is fixedly connected to the first gear, the surface of the first gear is meshed and connected to the first toothed plate, and the other end of the first toothed plate is fixedly connected to the clamping block.

[0009] According to the locking device for a heat-insulating fire damper described above, it is characterized in that: the output shaft of the second motor is fixedly connected to the second transmission rod, the surface of the second transmission rod is fixedly connected to two second gears, the surface of the second gear is meshed and connected to the second toothed plate, the other end of the second toothed plate is fixedly connected to the connecting plate, the upper end of the connecting plate is fixedly connected to the third connecting rod, and the upper end of the third connecting rod is fixedly connected to the sealing plate.

[0010] According to the locking device for a heat-insulating fire damper described above, it is characterized in that: openings are symmetrically arranged at the central position inside the sealing plate.

[0011] According to the locking device for a heat-insulating fire damper described above, it is characterized in that: the diameter of the clamping groove is slightly larger than the diameter of the clamping block.

[0012] According to the locking device for a heat-insulating fire damper described above, it is characterized in that: a sliding rod is slidably connected inside the two connecting plates, the lower end of the sliding rod is fixedly connected to the bottom plate, and the upper end of the sliding rod is fixedly connected to the limiting block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. For the locking device for a heat-insulating fire damper, by setting the clamping groove, the first motor, and the clamping block, starting the first motor indirectly drives the clamping block to move, so that the clamping block enters the inside of the clamping groove, realizing that the clamping groove clamps the clamping block, thereby realizing the fixation of the heat-insulating plate and the frame, and effectively preventing the high-temperature air pressure generated by the fire from pushing open the heat-insulating plate, improving the fire prevention ability of the fire damper.

[0015] 2. For the locking device for a heat-insulating fire damper, by setting the second motor, the second transmission rod, and the sealing plate, starting the second motor drives the second transmission rod to rotate, indirectly causing the sealing plate to move upward, so that the sealing plate seals the gap between the lower end of the heat-insulating plate and the frame, improving the sealing performance of the fire damper, and further improving the fire prevention ability of the fire damper.

[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 Stereogram of a locking device for a heat-insulating fire damper of the present utility model;

[0019] Figure 2 Sectional view of the housing of a locking device for a heat-insulating fire damper of the present utility model;

[0020] Figure 3 Partial sectional view of the frame of a locking device for a heat-insulating fire damper of the present utility model;

[0021] Figure 4 Of the present utility model Figure 3 Enlarged schematic view of the structure at position A in;

[0022] Figure 5 Stereogram of the sealing device of a locking device for a heat-insulating fire damper of the present utility model.

[0023] In the figure: 1. Frame; 2. Housing; 3. Biaxial motor; 4. First transmission rod; 5. Driving bevel gear; 6. Driven bevel gear; 7. First connecting rod; 8. Heat-insulating plate; 9. Second connecting rod; 10. Card slot; 11. Push rod device; 12. Sealing device; 13. Slide bar; 14. Bottom plate; 15. Limit block; 111. First motor; 112. First gear; 113. First toothed plate; 114. Clamping block; 121. Second motor; 122. Second transmission rod; 123. Second gear; 124. Second toothed plate; 125. Connecting plate; 126. Third connecting rod; 127. Sealing plate; 1271. Opening. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5, an embodiment of the present utility model provides a technical solution: a locking device for a heat-insulating fire damper, including a frame 1. Inside the frame 1, there are two heat-insulating plates 8. At the central position on one side of the heat-insulating plate 8, a clamping groove 10 is provided. Inside both sides of the frame 1, there is a push rod device 11. The push rod device 11 includes a first motor 111, a first gear 112, a first toothed plate 113, and a clamping block 114. By setting the clamping groove 10, the first motor 111, and the clamping block 114, starting the first motor 111 indirectly drives the clamping block 114 to move, so that the clamping block 114 enters the inside of the clamping groove 10, realizing that the clamping groove 10 clamps the clamping block 114, thereby realizing the fixation of the heat-insulating plate 8 and the frame 1, and effectively preventing the high-temperature air pressure generated by a fire from pushing open the heat-insulating plate 8, improving the fire prevention ability of the fire damper.

[0026] Inside the lower end of the frame 1, there is a sealing device 12. The sealing device 12 includes a second motor 121, a second transmission rod 122, a second gear 123, a second toothed plate 124, a connecting plate 125, a third connecting rod 126, and a sealing plate 127. By setting the second motor 121, the second transmission rod 122, and the sealing plate 127, starting the second motor 121 drives the second transmission rod 122 to rotate, indirectly causing the sealing plate 127 to move upward, so that the sealing plate 127 seals the gap between the lower end of the heat-insulating plate 8 and the frame 1, improving the sealing performance of the fire damper and further improving the fire prevention ability of the fire damper.

[0027] At the central position of the upper end of the frame 1, there is a fixed connection with the outer shell 2. At the central position inside the outer shell 2, there is a fixed connection with a double-shaft motor 3. Two output shafts of the double-shaft motor 3 are fixedly connected with a first transmission rod 4. The other end of the first transmission rod 4 is fixedly connected with a driving bevel gear 5. The surface of the driving bevel gear 5 is meshed and connected with a driven bevel gear 6. The lower end of the driven bevel gear 6 is fixedly connected with a first connecting rod 7. The lower end of the first connecting rod 7 is fixedly connected with the heat insulation plate 8. The lower end of the heat insulation plate 8 is fixedly connected with a second connecting rod 9. The output shaft of the first motor 111 is fixedly connected with a first gear 112. The surface of the first gear 112 is meshed and connected with a first toothed plate 113. The other end of the first toothed plate 113 is fixedly connected with a clamping block 114. By setting the double-shaft motor 3, the first transmission rod 4, and the heat insulation plate 8, by starting the double-shaft motor 3 to drive the two first transmission rods 4 to rotate, the other end of the first transmission rod 4 drives the driving bevel gear 5 to rotate. The surface of the driving bevel gear 5 drives the driven bevel gear 6 to rotate. The lower end of the driven bevel gear 6 drives the first connecting rod 7 to rotate. The lower ends of the two first connecting rods 7 drive the heat insulation plate 8 to rotate, so that the two heat insulation plates 8 rotate, realizing the closing of the fire damper and realizing the fire prevention function of the fire damper. The output shaft of the second motor 121 is fixedly connected with a second transmission rod 122. The surface of the second transmission rod 122 is fixedly connected with two second gears 123. The surface of the second gear 123 is meshed and connected with a second toothed plate 124. The other end of the second toothed plate 124 is fixedly connected with a connecting plate 125. The upper end of the connecting plate 125 is fixedly connected with a third connecting rod 126. The upper end of the third connecting rod 126 is fixedly connected with a sealing plate 127. At the symmetric positions at the central part inside the sealing plate 127, there are openings 1271. The diameter of the opening 1271 should be slightly larger than the diameter of the second connecting rod 9, so as to ensure that the second connecting rod 9 can pass through the opening 1271 and be rotationally connected with the frame 1. The diameter of the clamping groove 10 is slightly larger than the diameter of the clamping block 114, so as to ensure that the clamping block 114 can enter the inside of the clamping groove 10, so that the clamping groove 10 clamps the clamping block 114, realizing the fixation of the heat insulation plate 8 and the frame 1. A sliding rod 13 is slidably connected inside the two connecting plates 125. By setting the sliding rod 13, the moving range of the connecting plate 125 is restricted, improving the structural stability of the push rod device 11. The lower end of the sliding rod 13 is fixedly connected with a bottom plate 14. The upper end of the sliding rod 13 is fixedly connected with a limiting block 15. By setting the limiting block 15, the moving range of the connecting plate 125 is restricted, preventing the connecting plate 125 from sliding out and disengaging from the sliding rod 13.

[0028] Working principle: When in use, power is turned on. When fixing the fireproof board and the outer frame and waiting to close the fire damper, the first motor 111 is started. The output shaft of the first motor 111 drives the first gear 112 to rotate. The surface of the first gear 112 drives the first toothed plate 113 to move. The other end of the first toothed plate 113 drives the clamping block 114 to move, so that the clamping block 114 enters the clamping groove 10, realizing the fixation of the fireproof board and the outer frame. When sealing the lower end of the fireproof board and the outer frame, the second motor 121 is started. The output shaft of the second motor 121 drives the second transmission rod 122 to rotate. The surface of the second transmission rod 122 drives two second gears 123 to rotate. The surface of the second gear 123 drives the second toothed plate 124 to move upward. The side of the second toothed plate 124 drives the connecting plate 125 to move upward. The upper end of the connecting plate 125 drives the third connecting rod 126 to move upward. The upper end of the third connecting rod 126 drives the sealing plate 127 to move upward, so that the sealing plate 127 seals the gap between the lower end of the heat insulation board 8 and the frame 1, realizing the sealing of the lower end of the fireproof board and the outer frame.

[0029] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains, various changes can be made without departing from the gist of the present utility model.

Claims

1. A locking device for a heat-insulating fire damper, comprising a frame (1), characterized in that, Inside the frame (1), there are two heat insulation plates (8). At the central position on one side of the heat insulation plate (8), there is a card slot (10). Inside both sides of the frame (1), there is a push rod device (11). The push rod device (11) includes a first motor (111), a first gear (112), a first toothed plate (113), and a clamping block (114). Inside the lower end of the frame (1), there is a sealing device (12). The sealing device (12) includes a second motor (121), a second transmission rod (122), a second gear (123), a second toothed plate (124), a connecting plate (125), a third connecting rod (126), and a sealing plate (127).

2. The locking device for a heat-insulating fire damper according to claim 1, characterized in that: At the central position on the upper end of the frame (1), there is a housing (2) fixedly connected. At the central position inside the housing (2), there is a double-shaft motor (3). Two output shafts of the double-shaft motor (3) are fixedly connected with a first transmission rod (4). The other end of the first transmission rod (4) is fixedly connected with a driving bevel gear (5). The surface of the driving bevel gear (5) is meshed and connected with a driven bevel gear (6). The lower end of the driven bevel gear (6) is fixedly connected with a first connecting rod (7). The lower end of the first connecting rod (7) is fixedly connected with the heat insulation plate (8).

3. A locking device for a heat-insulating fire damper according to claim 1, characterized in that: The lower end of the heat insulation plate (8) is fixedly connected with a second connecting rod (9).

4. A locking device for a heat-insulating fire damper according to claim 1, characterized in that: The output shaft of the first motor (111) is fixedly connected with the first gear (112). The surface of the first gear (112) is meshed and connected with the first toothed plate (113). The other end of the first toothed plate (113) is fixedly connected with the clamping block (114).

5. The locking device for a heat-insulating fire damper according to claim 1, characterized in that: The output shaft of the second motor (121) is fixedly connected with the second transmission rod (122). The surface of the second transmission rod (122) is fixedly connected with two second gears (123). The surface of the second gear (123) is meshed and connected with the second toothed plate (124). The other end of the second toothed plate (124) is fixedly connected with the connecting plate (125). The upper end of the connecting plate (125) is fixedly connected with the third connecting rod (126). The upper end of the third connecting rod (126) is fixedly connected with the sealing plate (127).

6. The locking device for a heat-insulating fire damper according to claim 1, characterized in that: At the symmetric central position inside the sealing plate (127), there are openings (1271).

7. The locking device for a heat-insulating fire damper according to claim 1, characterized in that: The diameter of the card slot (10) is slightly larger than the diameter of the clamping block (114).

8. The locking device for a heat-insulating fire damper according to claim 1, characterized in that: Inside two connecting plates (125), there is a sliding rod (13) slidably connected. The lower end of the sliding rod (13) is fixedly connected with a bottom plate (14). The upper end of the sliding rod (13) is fixedly connected with a limiting block (15).

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