A smoke detection device

Abstract

The utility model relates to a smoke exhaust detection technical field especially, relates to a kind of smoke exhaust detection device.The smoke exhaust detection device includes middle joint, the middle joint is equipped with multiple axial setting cut groove, and the end of each cut groove is fixedly embedded with rotating A rod, each rotating A rod is all erected with support arm group, and the middle joint is also installed with the driving component for adjusting the support diameter of support arm group;And the middle joint is installed with impeller anemometer.The smoke exhaust detection device provided by the utility model is telescopic by driving component linkage movable arm, drives the radial movement of resistance wheel, realizes stepless regulation of support diameter, adapts different pipeline, and the thread self-locking characteristic of screw rod and screw ring ensures that support arm group is not loose under vibration environment, in combination with the sliding constraint of movable arm and cut groove wall, eliminate radial swing, and simultaneously, the application structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust detection technology, and in particular to a smoke exhaust detection device. Background Technology

[0002] In fields such as building fire protection and industrial ventilation, the performance of smoke exhaust systems directly affects personnel safety and environmental control. Accurate detection of parameters such as smoke exhaust volume and air velocity is crucial for evaluating system effectiveness. Existing smoke exhaust detection devices mostly use fixed-diameter probes. When dealing with smoke exhaust ducts of different diameters, it is often necessary to replace the probes with compatible ones, resulting in cumbersome operation and poor adaptability.

[0003] While some adjustable diameter detection devices can adapt to different pipes to a certain extent, the adjustment structure is mostly snap-on or bolt-fixed, which is prone to instability during the adjustment process. This causes the detection probe to shake under the impact of airflow, affecting the accuracy of wind speed and air volume measurements. At the same time, the installation and disassembly of traditional devices require multiple manual operations, which greatly reduces convenience when used in high-altitude pipes or narrow spaces.

[0004] Therefore, it is necessary to provide a new smoke exhaust detection device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a smoke exhaust detection device.

[0006] The smoke exhaust detection device provided by this utility model includes a central tube, on which multiple axially arranged grooves are opened, and a rotating A rod is fixedly fitted at the end of each groove, and a support arm assembly is mounted on each rotating A rod.

[0007] The support arm assembly includes an abutting wheel, on which a positioning arm and a movable arm are rotatably connected, and the positioning arm is rotatably mounted on a rotating rod A.

[0008] The central cylinder is also equipped with a drive component for adjusting the support diameter of the support arm assembly;

[0009] An impeller anemometer is installed on the central tube.

[0010] Preferably, the cylinder head fixing frame of the intermediate cylinder is provided with a bracket, and the driving component is mounted on the bracket.

[0011] Preferably, the driving component includes a lead screw, which is rotatably mounted on a bracket and coaxially arranged with the central cylinder. A threaded ring is fitted on the lead screw, and multiple annularly distributed and rotatably connected rotating rods are fixedly installed on the threaded ring.

[0012] Preferably, one end of the movable arm extends through the corresponding slot into the middle cylinder, and the extended end of the movable arm is sleeved on the rotating B rod on the threaded ring and rotatably connected to the rotating B rod.

[0013] Preferably, the movable arm is slidably connected to the two side walls of the groove.

[0014] Preferably, the lead screw extends from the tail end of the connecting cylinder and is fixedly fitted with a knob.

[0015] Preferably, a fan is rotatably connected to the front end face of the bracket.

[0016] Compared with related technologies, the smoke exhaust detection device provided by this utility model has the following beneficial effects:

[0017] This utility model achieves stepless adjustment of the support diameter by driving the linkage of the movable arm to extend and retract, thereby driving the abutment wheel to move radially and adapting to different pipes. The self-locking characteristics of the screw and the threaded ring ensure that the support arm assembly does not loosen under vibration. Combined with the sliding constraint between the movable arm and the groove wall, radial sway is eliminated. At the same time, this application has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 One of the structural schematic diagrams of a preferred embodiment of the smoke exhaust detection device provided by this utility model;

[0019] Figure 2 A second schematic diagram of a preferred embodiment of the smoke exhaust detection device provided by this utility model;

[0020] Figure 3 for Figure 1 The diagram shows the structure of the support arm assembly.

[0021] Figure 4 for Figure 2 The diagram shows a cross-sectional view of the central connecting tube.

[0022] The following are the labels in the diagram: 1. Middle cylinder; 1a. Groove; 11. Rotating rod A; 12. Bracket; 2. Support arm assembly; 21. Abutting wheel; 22. Positioning arm; 23. Movable arm; 3. Drive component; 31. Lead screw; 32. Threaded ring; 321. Rotating rod B; 33. Knob; 4. Fan; 5. Impeller anemometer. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 4 The present invention provides a smoke exhaust detection device, which includes a central cylinder 1, a support arm assembly 2, and a drive component 3.

[0026] In the embodiments of this utility model, please refer to Figures 1 to 4 The middle cylinder 1 is equipped with an impeller anemometer 5. The middle cylinder 1 has multiple axially arranged slots 1a, and each slot 1a has a rotating A rod 11 fixedly fitted at its end. Each rotating A rod 11 is equipped with a support arm assembly 2. Specifically, the support arm assembly 2 includes an abutting wheel 21, on which a positioning arm 22 and a movable arm 23 are mounted. The positioning arm 22 passes through and is rotatably mounted on the rotating A rod 11. The middle cylinder 1 is also equipped with a drive component 3 for adjusting the support diameter of the support arm assembly 2.

[0027] It should be noted that when testing the air volume of the pipeline, the central connecting tube 1 is inserted into the pipeline, and then the drive component 3 is used to drive the support arm assembly 2 to open until the abutment wheel 21 is firmly abutted against the inner wall of the pipeline. The installation of the central connecting tube 1 in the pipeline is then completed. The operation is simple and convenient. Then, the fan in the pipeline smoke exhaust system is started and runs stably for a period of time. The air volume during the smoke exhaust of the pipeline can then be detected by the impeller anemometer 5.

[0028] In the embodiments of this utility model, please refer to Figures 1 to 4 The cylinder head fixing frame of the middle cylinder 1 is provided with a bracket 12. The driving component 3 is installed on the bracket 12. The driving component 3 includes a lead screw 31. The lead screw 31 is rotatably installed on the bracket 12 and coaxially arranged with the middle cylinder 1. A threaded ring 32 is sleeved on the lead screw 31. Multiple annularly distributed and rotatably connected rotating B rods 321 are fixedly installed on the threaded ring 32. One end of the movable arm 23 extends through the corresponding groove 1a into the middle cylinder 1. The extended end of the movable arm 23 is sleeved on the rotating B rod 321 on the threaded ring 32 and rotatably connected to the rotating B rod 321. The lead screw 31 extends out of the tail cylinder opening of the middle cylinder 1 and is fixedly installed with a knob 33.

[0029] It should be noted that: by rotating the knob 33, the lead screw 31 is driven to rotate. As the lead screw 31 rotates, the threaded ring 32 is equipped with a rotating movable arm 23 that extends out of the groove 1a. Therefore, the threaded ring 32 slides towards the bracket 12, so that the positioning arm 22 and the movable arm 23 are in a closed state. Thus, the abutment wheel 21 abuts against the inner wall of the pipe. Rotating the knob 33 in the opposite direction will cause the threaded ring 32 to slide away from the bracket 12, so that the positioning arm 22 and the movable arm 23 are in an open state, so that the middle cylinder 1 can be quickly disassembled from the pipe.

[0030] It is worth noting that: by driving the movable arm 23 to extend and retract through the linkage of the drive component 3, the abutment wheel 21 is driven to move radially, thereby realizing stepless adjustment of the support diameter to adapt to different pipes. The thread self-locking characteristics of the lead screw 31 and the threaded ring 32 ensure that the support arm assembly 2 does not loosen under vibration. Combined with the sliding constraint between the movable arm 23 and the groove wall of the groove 1a, radial sway is eliminated.

[0031] Furthermore, the movable arm 23 is slidably connected to the two side walls of the groove 1a, thereby improving the stability of the movable arm 23 when sliding towards or away from the positioning arm 22.

[0032] The support 12 has a fan 4 that is rotatably connected to the front end, which can help stabilize the airflow during testing, reduce the impact of eddies in the pipe on the impeller anemometer 5, and further improve the reliability of the test data.

[0033] The working principle of the smoke exhaust detection device provided by this utility model is as follows:

[0034] When testing the air volume of the pipeline, the central connecting cylinder 1 is inserted into the pipeline. Then, the drive component 3 is used to drive the support arm assembly 2 to open. Specifically, the screw 31 is rotated by rotating the knob 33. As the screw 31 rotates, the threaded ring 32 is mounted with a rotating movable arm 23 and the movable arm 23 extends out of the groove 1a. Therefore, the threaded ring 32 slides towards the bracket 12, so that the positioning arm 22 and the movable arm 23 are in a closed state. Thus, the abutting wheel 21 abuts against the inner wall of the pipeline. Rotating the knob 33 in the opposite direction will make the threaded ring 32 slide away from the bracket 12, so that the positioning arm 22 and the movable arm 23 are in an open state, so that the central connecting cylinder 1 can be quickly disassembled from the pipeline. The operation is simple and convenient. Then, the fan in the pipeline smoke exhaust system is started and runs stably for a period of time. The air volume during pipeline smoke exhaust can be detected by the impeller anemometer 5.

[0035] By driving the extension and retraction of the movable arm 23 through the linkage of the drive component 3, the abutment wheel 21 is driven to move radially, thereby realizing stepless adjustment of the support diameter to adapt to different pipes. The thread self-locking characteristics of the lead screw 31 and the threaded ring 32 ensure that the support arm assembly 2 does not loosen in the vibration environment. Combined with the sliding constraint between the movable arm 23 and the groove wall of the groove 1a, radial sway is eliminated.

[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A smoke exhaust detection device, characterized in that, Includes a central tube (1), on which multiple axially arranged slots (1a) are opened, and a rotating A rod (11) is fixedly fitted at the end of each slot (1a), and a support arm assembly (2) is mounted on each rotating A rod (11). The support arm assembly (2) includes an engagement wheel (21), on which a rotatably connected positioning arm (22) and movable arm (23) are mounted, and the positioning arm (22) is rotatably mounted on the rotating A rod (11). The middle cylinder (1) is also equipped with a drive component (3) for adjusting the support diameter of the support arm assembly (2); An impeller anemometer (5) is installed on the central tube (1).

2. The smoke exhaust detection device according to claim 1, characterized in that, The cylinder head fixing frame of the central cylinder (1) is provided with a bracket (12), and the driving component (3) is installed on the bracket (12).

3. The smoke exhaust detection device according to claim 2, characterized in that, The drive component (3) includes a lead screw (31), which is rotatably mounted on the bracket (12) and coaxially arranged with the central cylinder (1). A threaded ring (32) with a threaded connection is sleeved on the lead screw (31), and multiple rotating B rods (321) that are distributed in annular shape and rotatably connected are fixedly installed on the threaded ring (32).

4. The smoke exhaust detection device according to claim 3, characterized in that, One end of the movable arm (23) extends through the corresponding groove (1a) into the middle cylinder (1), and the extended end of the movable arm (23) is sleeved on the rotating B rod (321) on the threaded ring (32) and rotatably connected to the rotating B rod (321).

5. The smoke exhaust detection device according to claim 4, characterized in that, The movable arm (23) is slidably connected to the two sides of the groove (1a).

6. The smoke exhaust detection device according to claim 3, characterized in that, The lead screw (31) extends out of the tail end of the central cylinder (1) and is fixedly fitted with a knob (33).

7. The smoke exhaust detection device according to claim 2, characterized in that, A fan (4) is rotatably connected to the front end of the bracket (12).

Images