Ventilation detection device for fireproof channel of building

Abstract

The invention belongs to the field of fire safety, and relates to a smoke detector, in particular to a ventilation detection device for a building fireproof channel, which comprises a chassis, a lifting mechanism is arranged on the chassis, the lifting mechanism comprises a bottom plate, a sliding rail and a rack are fixedly connected to the bottom plate, the sliding rail is parallel to the rack, the sliding rail is slidably connected with a sliding block, and the sliding block is connected with a sliding door. The sliding block is fixedly connected with a supporting frame, the supporting frame is fixedly connected with a motor and a smoke concentration detector, the motor is connected with a gear, and the gear is meshed with the rack. Smoke is produced in the fireproof channel, after the smoke is stopped, the device is used for detecting the smoke concentration at a certain time interval, the ventilation performance of the fireproof channel is laterally reflected through the change of the smoke concentration, and a smoke concentration detector in the device can detect the smoke concentration at different heights to obtain more data samples; and the detection result is more accurate.

Description

Technical Field

[0001] The present invention belongs to the field of fire safety, relates to a smoke detector, and particularly relates to a ventilation detection device for a fire prevention passage in a building. Background Art

[0002] In high-rise buildings, fire prevention passages need to be designed so that there are safe escape passages in the building during a fire. Such structures are designed as skywalks, corridors, and stairwells. Fire doors are required in the stairwells to block flames and smoke, and the stairwells need to have a certain ventilation, such as ventilation ducts are designed so that the smoke poured into the stairwell can escape to the outside. It is convenient to verify whether the skywalks and stairwells have been built and whether fireproof materials are used, but it is not convenient to detect the ventilation of the stairwells. Moreover, due to different heights from the ground, the smoke concentration and the concentration change speed are also different. Therefore, there is an urgent need for a device that can detect the ventilation of the stairwells. Summary of the Invention

[0003] The present invention provides a ventilation detection device for a fire prevention passage in a building in view of the above problems.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A ventilation detection device for a fire prevention passage in a building, including a chassis, a lifting mechanism is provided on the chassis. The lifting mechanism includes a bottom plate, a slide rail and a rack are fixedly connected to the bottom plate, the slide rail and the rack are parallel, a slider is slidably connected to the slide rail, a support frame is fixedly connected to the slider, a motor and a smoke concentration detector are fixedly connected to the support frame, the motor is connected with a gear, and the gear meshes with the rack.

[0005] Preferably, a plurality of universal wheels are connected to the bottom of the chassis.

[0006] Preferably, one end of the bottom plate away from the slide rail is fixedly connected with a rotating seat, the rotating seat is rotatably connected with a hinge seat, and the hinge seat is fixedly connected with the chassis.

[0007] Preferably, a support seat for supporting the bottom plate rotated to the horizontal is provided on the chassis.

[0008] Preferably, the support seat is provided with a groove, a protrusion is provided at the top end of the bottom plate corresponding to the groove, through holes are provided in both the groove and the protrusion, and a positioning pin is inserted into the through hole.

[0009] Preferably, a limiting mechanism for clamping the vertical bottom plate is provided on the chassis. The limiting mechanism includes a hollow tube. One end of the hollow tube is provided with a first blind hole. A spring is provided at the bottom of the blind hole. One end of the spring away from the bottom of the first blind hole is lapped with a sliding rod. A second blind hole is provided on the upper side of the hollow tube. The second blind hole is communicated with the first blind hole. The sliding rod is connected with a handle, and the handle passes out of the second blind hole.

[0010] Preferably, a third blind hole is provided on the vertical side of the hollow tube. The third blind hole is communicated with the second blind hole and the first blind hole, and the handle can enter the third blind hole.

[0011] Preferably, a battery is provided on the chassis.

[0012] Preferably, a controller is provided on the chassis.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0014] By generating smoke in the fire prevention passage, after the smoke stops being generated, the device is used to detect the smoke concentration at regular intervals. The ventilation of the fire prevention passage is reflected indirectly through the change of the smoke concentration. And the smoke concentration detector in the device can detect the smoke concentration at different heights, obtaining more data samples and making the detection result more accurate.

[0015] The bottom plate of the present invention can be rotated to the horizontal for easy storage and movement. And a limiting mechanism is provided to limit the vertical bottom plate to keep it vertical. The limiting mechanism includes a sliding rod pushed by a spring. The sliding rod is lapped with the side of the bottom plate away from the hinge seat, so that the bottom plate no longer rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a ventilation detection device for a building fire prevention passage;

[0018] Figure 2 It is Figure 1 The enlarged view of the structure at A in

[0019] Figure 3 It is different from Figure 1 A schematic structural diagram of a ventilation detection device for a building fire prevention passage from a perspective.

[0020] In the above figures, 1 is the chassis; 11 are the universal wheels; 2 is the lifting mechanism; 21 is the bottom plate; 22 is the slide rail; 23 is the rack; 24 is the support frame; 25 is the motor; 26 is the smoke concentration detector; 27 is the gear; 3 is the rotating seat; 4 is the hinge seat; 5 is the support seat; 51 is the groove; 52 is the positioning pin; 6 is the limiting mechanism; 61 is the hollow tube; 62 is the slide bar; 63 is the second blind hole; 64 is the handle; 65 is the third blind hole; 7 is the battery; 8 is the controller. Detailed implementation manners

[0021] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0023] In order to detect the ventilation of non-open fire protection passages such as stairwells, smoke is created in the fire protection passage and the smoke concentration is detected at regular intervals. The ventilation of the fire protection passage is reflected indirectly through the change in the smoke concentration. The technical solution proposed by the present invention is as Figure 1 , Figure 2 , Figure 3 shown. A ventilation detection device for a building fire protection passage includes a chassis 1. A lifting mechanism 2 is arranged on the chassis 1. The lifting mechanism 2 includes a bottom plate 21. A slide rail 22 and a rack 23 are fixedly connected to the bottom plate 21. The slide rail 22 and the rack 23 are parallel. A slider is slidably connected to the slide rail 22. The slider is fixedly connected to a support frame 24. The support frame 24 can slide along the slide rail 22. The support frame 24 is fixedly connected to a motor 25 and a smoke concentration detector 26. The smoke concentration detector 26 reflects the smoke concentration by detecting the brightness of the light passing through the smoke. This will not be elaborated here. The motor 25 is connected to a gear 27. The gear 27 meshes with the rack 23.

[0024] Specifically, in use, the bottom plate 21 is set vertically. The motor 25 drives the gear 27 to rotate, thereby driving the support frame 24 to move up and down. Therefore, the smoke concentration detector 26 can detect the smoke concentration at different heights, obtain more data samples, and make the detection result more accurate.

[0025] Furthermore, a plurality of universal wheels 11 are connected to the bottom of the chassis 1.

[0026] To make the present invention easy to store and move.

[0027] Furthermore, one end of the base plate 21 away from the slide rail 22 is fixedly connected to a rotating seat 3, the rotating seat 3 is rotatably connected to a hinge seat 4, and the hinge seat 4 is fixedly connected to the chassis 1, so that the base plate 21 can be rotated to the horizontal or vertical position.

[0028] Furthermore, a support base 5 is provided on the chassis 1 for supporting the bottom plate 21 that rotates to a horizontal position.

[0029] Furthermore, the support base 5 is provided with a groove 51, and a protrusion is provided at the top of the base plate 21 corresponding to the groove 51. Both the groove 51 and the protrusion are provided with through holes, and the through holes are inserted into the positioning pins 52. When the base plate 21 is rotated to a horizontal position, the base plate 21 overlaps the support base 5, and the protrusion enters the groove 51. The protrusion and the through hole of the groove 51 are aligned, and the positioning pins 52 are inserted to connect the two.

[0030] Furthermore, the chassis 1 is provided with a limiting mechanism 6 for clamping the vertical bottom plate 21. The limiting mechanism 6 includes a hollow tube 61. A first blind hole is provided at one end of the hollow tube 61. A spring is provided at the bottom of the blind hole. A slide rod 62 is overlapped at the end of the spring away from the bottom of the first blind hole. The slide rod 62 passes through the hollow tube 61 at one end away from the spring and is used to overlap with the vertical bottom plate 21. A second blind hole 63 is provided on the upper side of the hollow tube 61. The second blind hole 63 is connected to the first blind hole. The slide rod 62 is connected to a handle 64. The handle 64 passes through the second blind hole 63 to facilitate pulling the slide rod 62 to move away from or close to the bottom plate 21.

[0031] Furthermore, a third blind hole 65 is provided on the vertical side of the hollow tube 61. The third blind hole 65 is connected to the second blind hole 63 and the first blind hole, and the handle 64 can enter the third blind hole 65. Specifically, when the base plate 21 rotates, the handle 64 is pulled to enter the third blind hole 65, compressing the spring and preventing the slide bar 62 from sliding. When the base plate 21 rotates to a vertical position, the handle 64 is rotated to cause the slide bar 62 to overlap the side of the base plate 21 away from the hinge seat 4, preventing the base plate 21 from rotating further. The spring pushes the slide bar 62 to prevent it from retracting, and the handle 64 is within the second blind hole 63, preventing the slide bar 62 from disengaging from the first blind hole.

[0032] Furthermore, a battery 7 is provided on the chassis 1 .

[0033] Furthermore, a controller 8 is provided on the chassis 1 . The controller 8 is provided with a remote control module, an information transceiver module and a data recording module. The controller 8 is electrically connected to the motor 25 and the smoke concentration detector 26 .

[0034] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A ventilation detection device for a fire escape in a building, characterized in that, It includes a chassis, on which a lifting mechanism is provided. The lifting mechanism includes a bottom plate, on which a slide rail and a rack are fixedly connected. The slide rail is parallel to the rack. A slider is slidably connected to the slide rail. The slider is fixedly connected to a support frame, and the support frame is fixedly connected to a motor and a smoke concentration detector. The motor is connected to a gear, and the gear meshes with the rack.

2. The ventilation detection device for a building fire prevention passage according to claim 1, characterized in that, A number of universal wheels are connected to the bottom of the chassis.

3. The ventilation detection device for a building fire prevention passage according to claim 1, characterized in that, One end of the bottom plate away from the slide rail is fixedly connected to a rotating seat, and the rotating seat is rotatably connected to a hinge seat, and the hinge seat is fixedly connected to the chassis.

4. The ventilation detection device for a building fire prevention passage according to claim 3, characterized in that, A support seat for supporting the bottom plate rotated to the horizontal is provided on the chassis.

5. The ventilation detection device for a building fire prevention passage according to claim 4, characterized in that, The support seat is provided with a groove, and a protrusion is provided at the top of the bottom plate corresponding to the groove. Through holes are provided in both the groove and the protrusion, and a positioning pin is inserted into the through holes.

6. The ventilation detection device for a building fire prevention passage according to claim 5, characterized in that, A limiting mechanism for clamping the vertical bottom plate is provided on the chassis. The limiting mechanism includes a hollow tube. One end of the hollow tube is provided with a first blind hole, and a spring is provided at the bottom of the blind hole. One end of the spring away from the bottom of the first blind hole is lapped with a slide rod. A second blind hole is provided on the upper side of the hollow tube, and the second blind hole communicates with the first blind hole. The slide rod is connected to a handle, and the handle passes through the second blind hole.

7. The ventilation detection device for a building fire escape passage according to claim 6, characterized in that, A third blind hole is provided on the vertical side of the hollow tube, and the third blind hole communicates with the second blind hole and the first blind hole, and the handle can enter the third blind hole.

8. The ventilation detection device for a building fire prevention passage according to claim 7, characterized in that, A battery is provided on the chassis.

9. The ventilation detection device for a building fire prevention passage according to claim 8, characterized in that, A controller is provided on the chassis.

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