Exhaust passage anti-backflow performance detection device

Abstract

The utility model relates to the technical field of exhaust passage detection, in particular to an exhaust passage anti-backflow performance detection device which comprises a base, an electric telescopic rod, a connecting plate, a pipeline and a sealing mechanism, one end of the electric telescopic rod is connected with the base, the other end of the electric telescopic rod is connected with the connecting plate, the pipeline is arranged on the connecting plate, and the sealing mechanism is arranged on the base. An airflow sensor is arranged on the inner wall of the pipeline, an alarm is arranged on the outer wall of the pipeline, the alarm is electrically connected with the airflow sensor, the sealing mechanism comprises a bearing, a long plate, a sliding groove, an electric sliding block, a sliding plate and a plug, the bearing is arranged on the connecting plate, the long plate is connected with the connecting plate through the bearing, and the sliding groove is formed in the long plate. The sliding groove is formed in the long plate, one end of the electric sliding block is arranged on the sliding groove, the other end of the electric sliding block is connected with the sliding plate, and the problem that existing equipment is not provided with a sealing device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust duct detection, in particular to an exhaust duct anti-backflow performance detection device. Background Art

[0002] As we all know, the residential exhaust duct system is mainly composed of a range hood (ventilation fan), an exhaust main duct, an exhaust branch duct, a fire check valve, an anti-backflow exhaust cap, etc. The anti-backflow exhaust cap is installed at the exhaust port of the exhaust main duct on the roof of the residential building at the end of the system. It plays a role in preventing natural wind from backflowing and rain and snow from backflowing into the exhaust main duct when the smoke is discharged at high altitude. At the same time, the anti-backflow performance of the exhaust duct needs to be detected by a detection device. For example, the patent number is "CN211626870U", and the patent name is "An exhaust duct anti-backflow performance detection device", which discloses "An exhaust duct anti-backflow performance detection device, involving exhaust duct The technical field of detection equipment includes a mounting block and a base, wherein a first threaded rod is fixedly arranged in the middle of the bottom end of the mounting block, a first threaded groove matched with the first threaded rod is opened in the middle of the top end of the base, the bottom end of the first threaded rod extends to the inside of the first threaded groove, and the first threaded rod is threadedly connected to the first threaded groove, a second threaded groove is opened in the middle of the bottom end of one side surface of the mounting block, one end of the second threaded groove passes through the mounting block and extends to the other side surface of the mounting block, a second threaded rod matched with the second threaded groove is passed through the inside of the second threaded groove, and the second threaded groove is threadedly connected to the second threaded rod; the utility model is threadedly connected to the second threaded groove through the second threaded rod.

[0003] However, the above-mentioned exhaust duct anti-backflow performance detection device generally does not have a sealing device. When the device is not in use, external garbage is easily blown into the interior of the pipeline, thereby blocking the interior of the pipeline and causing airflow detection. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an exhaust duct backflow prevention performance detection device.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust duct anti-backflow performance detection device, comprising a base, an electric telescopic rod, a connecting plate, a pipe and a sealing mechanism, wherein one end of the electric telescopic rod is connected to the base, the other end of the electric telescopic rod is connected to the connecting plate, the pipe is arranged on the connecting plate, an airflow sensor is arranged on the inner wall of the pipe, an alarm is arranged on the outer wall of the pipe, the alarm is electrically connected to the airflow sensor, the sealing mechanism comprises a bearing, a long plate, a slide groove, an electric slider, a sliding plate and a plug, the bearing is arranged on the connecting plate, the long plate is connected to the connecting plate through the bearing, the slide groove is opened on the long plate, one end of the electric slider is arranged on the slide groove, the other end of the electric slider is connected to the sliding plate, and the plug is arranged on the sliding plate.

[0008] In order to achieve the limiting effect, the utility model is improved in that a limiting mechanism is provided on the long plate, and the limiting mechanism includes a bolt, a threaded groove and a threaded hole. The threaded hole is opened on the long plate, and the threaded groove is opened on the connecting plate. The bolt threadably connects the threaded hole and the threaded groove, and there are two limiting mechanisms.

[0009] In order to improve the stability, the utility model is improved in that the two limiting mechanisms are symmetrically arranged.

[0010] In order to facilitate operation, the utility model is improved in that a controller is provided on the base, the controller is electrically connected to the electric telescopic rod, and the controller is electrically connected to the electric slider.

[0011] In order to achieve an anti-slip effect, the utility model is improved in that an anti-slip layer is provided at the bottom of the base, and the anti-slip layer is fixedly connected to the base.

[0012] In order to improve the anti-skid effect, the utility model is improved in that the anti-skid layer is made of rubber material.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an exhaust duct backflow prevention performance detection device, which has the following beneficial effects:

[0015] The exhaust duct anti-backflow performance detection device, by setting a sealing mechanism, can prevent external garbage from being blown by the wind and entering the interior of the pipeline, causing the airflow to be unable to pass through the pipeline and resulting in the inability to detect the airflow. The sealing mechanism in this mechanism is different from the traditional sealing mechanism. The traditional sealing mechanism only directly blocks the plug on the pipeline, which is prone to falling off and is prone to being lost after the plug is separated from the pipeline. However, after the plug of the sealing mechanism is separated from the pipeline, it is still on the device body and will not be lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the shaft side structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the shaft side structure of the utility model;

[0020] Figure 5 For this utility model Figure 1 Schematic diagram of the internal structure of the pipeline

[0021] In the figure: 1. base; 2. electric telescopic rod; 3. connecting plate; 4. pipeline; 5. air flow sensor; 6. alarm; 7. sealing mechanism; 8. bearing; 9. long board; 10. slide groove; 11. electric slider; 12. sliding plate; 13. plug; 14. limit mechanism; 15. bolt; 16. threaded hole; 17. threaded groove; 18. controller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , an exhaust duct anti-backflow performance detection device, comprising a base 1, an electric telescopic rod 2, a connecting plate 3, a pipe 4 and a sealing mechanism 7, wherein one end of the electric telescopic rod 2 is connected to the base 1, and the other end of the electric telescopic rod 2 is connected to the connecting plate 3, the pipe 4 is arranged on the connecting plate 3, an airflow sensor 5 is arranged on the inner wall of the pipe 4, and an alarm 6 is arranged on the outer wall of the pipe 4, and the alarm 6 is electrically connected to the airflow sensor 5, and the sealing mechanism 7 comprises a bearing 8, a long plate 9, a slide groove 10, an electric slider 11, a sliding plate 12 and a plug 13, the bearing 8 is arranged on the connecting plate 3, the long plate 9 is connected to the connecting plate 3 through the bearing 8, the slide groove 10 is opened on the long plate 9, one end of the electric slider 11 is arranged on the slide groove 10, the other end of the electric slider 11 is connected to the sliding plate 12, and the plug 13 is arranged on the sliding plate 12.

[0024] When in use, first place the base 1 at the designated position. When the device is to be used, start the electric slider 11 on the slide slot 10 provided on the long board 9, so that the electric slider 11 drives the plug 13 on the sliding board 12 to rise, so that the plug 13 is separated from the pipe 4, and then rotate the long board 9 connected to the connecting plate 3 through the bearing 8 to rotate to a suitable position, and then the staff holds the long board 9 by hand, and then aligns the pipe 4 with the external pipe 4 to be inspected, and then starts the electric telescopic rod 2 to drive the pipe 4 on the connecting plate 3 to rise, so that the pipe 4 extends into the external pipe 4, When there is backflow of air in the external exhaust duct 4, it will flow out through the duct 4. When the airflow passes through the airflow sensor 5 inside the duct 4, the alarm 6 will sound an alarm to remind the staff that there is backflow of air in the exhaust duct 4. By setting up a sealing mechanism 7, it is possible to prevent external garbage from being blown by the wind and entering the duct 4, causing the airflow to be unable to pass through the duct 4 and the airflow to be unable to be detected. The sealing mechanism 7 in this mechanism is different from the traditional sealing mechanism 7. The traditional sealing mechanism 7 only directly blocks the plug 13 on the duct 4, which is prone to falling off, and after the plug 13 is separated from the duct 4, it is also prone to being lost. After the plug 13 of the sealing mechanism 7 is separated from the duct 4, it is still on the equipment body and will not be lost.

[0025] The above-mentioned long board 9 is easy to rotate freely, but still needs to be held by staff with hands. In order to solve this problem, in this embodiment, a limiting mechanism 14 is provided on the long board 9, and the limiting mechanism 14 includes a bolt 15, a threaded groove 17 and a threaded hole 16. The threaded hole 16 is opened on the long board 9, and the threaded groove 17 is opened on the connecting plate 3. The bolt 15 is threadedly connected to the threaded hole 16 and the threaded groove 17. There are two limiting mechanisms 14. After the long board 9 is rotated to a certain position, the bolt 15 is screwed into the threaded groove 17 and the threaded hole 16 to prevent the long board 9 from rotating.

[0026] The above-mentioned limiting mechanism 14 has poor stability. In order to solve this problem, in this embodiment, the two limiting mechanisms 14 are symmetrically arranged.

[0027] The above-mentioned electric telescopic rod 2 and electric slider 11 are inconvenient to operate. In order to solve this problem, in this embodiment, a controller 18 is provided on the base 1, and the controller 18 is electrically connected to the electric telescopic rod 2, and the controller 18 is electrically connected to the electric slider 11.

[0028] The above-mentioned base 1 has a poor anti-slip effect and is prone to slipping when in contact with a smooth ground. In order to solve this problem, in this embodiment, an anti-slip layer is provided at the bottom of the base 1, and the anti-slip layer is fixedly connected to the base 1.

[0029] The anti-skid layer may be made of any material. In order to improve the anti-skid effect, in this embodiment, the anti-skid layer is made of rubber.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust duct backflow prevention performance detection device, comprising a base (1), an electric telescopic rod (2), a connecting plate (3), a pipeline (4) and a sealing mechanism (7), characterized in that: One end of the electric telescopic rod (2) is connected to the base (1), and the other end of the electric telescopic rod (2) is connected to the connecting plate (3). The pipe (4) is arranged on the connecting plate (3). An airflow sensor (5) is arranged on the inner wall of the pipe (4). An alarm (6) is arranged on the outer wall of the pipe (4). The alarm (6) is electrically connected to the airflow sensor (5). The sealing mechanism (7) comprises a bearing (8), a long plate (9), a slide groove (10), an electric slider (11), a sliding plate (12) and a plug (13). The bearing (8) is arranged on the connecting plate (3). The long plate (9) is connected to the connecting plate (3) through the bearing (8). The slide groove (10) is opened on the long plate (9). One end of the electric slider (11) is arranged on the slide groove (10). The other end of the electric slider (11) is connected to the sliding plate (12). The plug (13) is arranged on the sliding plate (12).

2. The exhaust duct backflow prevention performance detection device according to claim 1, characterized in that: The long plate (9) is provided with a limiting mechanism (14), the limiting mechanism (14) comprising a bolt (15), a threaded groove (17) and a threaded hole (16), the threaded hole (16) being provided on the long plate (9), the threaded groove (17) being provided on the connecting plate (3), the bolt (15) being threadedly connected to the threaded hole (16) and the threaded groove (17), and there are two limiting mechanisms (14).

3. The exhaust duct backflow prevention performance detection device according to claim 2, characterized in that: The two limiting mechanisms (14) are symmetrically arranged.

4. The exhaust duct backflow prevention performance detection device according to claim 3, characterized in that: The base (1) is provided with a controller (18), the controller (18) is electrically connected to the electric telescopic rod (2), and the controller (18) is electrically connected to the electric slider (11).

5. The exhaust duct backflow prevention performance detection device according to claim 4, characterized in that: The bottom of the base (1) is provided with an anti-slip layer, and the anti-slip layer is fixedly connected to the base (1).

6. The exhaust duct backflow prevention performance detection device according to claim 5, characterized in that: The anti-slip layer is made of rubber.

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