Flue gas monitoring alarm device

Abstract

The utility model relates to the technical field of flue gas monitoring, in particular to a flue gas monitoring alarm device which comprises an alarm device body, a fixed detection cylinder is arranged on the alarm device body, a plug plate slides in the fixed detection cylinder, an air cylinder is fixed on the bottom side of the plug plate, air holes are formed in the wall of the air cylinder, and the air holes are communicated with the fixed detection cylinder. The air cylinder penetrates through the bottom wall of the fixed detection cylinder in a sliding mode, meanwhile, a draught fan is installed on the plug plate, when the draught fan works, external air is sucked into the fixed detection cylinder below the plug plate, on the basis that bristles clean the outer wall of the air cylinder through airflow, reverse blowing can be achieved in the airflow discharging process, and removed dust is blown away. And falling onto the inflator is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke monitoring, in particular to a smoke monitoring alarm device. Background Art

[0002] Publication (Announcement) No.: CN219658194U, a smoke monitoring alarm device, which quickly draws in external air through the operation of a fan arranged inside, thereby accelerating the external smoke to enter the interior of the smoke inlet channel for detection.

[0003] In the above scheme, other dust will accumulate in large quantities at the inlet of the device shell due to the extraction of the fan, blocking the inlet, so it needs to be cleaned. At present, when the flue gas monitoring alarm device needs to be cleaned, a cleaning brush with a separate driving power is mostly used to clean the inlet, and the inhaled air cannot be fully utilized as power for cleaning. Utility Model Content

[0004] The utility model aims at least to solve the problem in the prior art that a fan is provided to accelerate air detection while the incoming airflow cannot be reused.

[0005] The present solution provides a smoke monitoring alarm device, which is achieved by the following specific technical means: it includes an alarm device body, on which a fixed detection cylinder is arranged, a detection module is arranged on the inner bottom wall of the fixed detection cylinder, a plug plate is slidably arranged in the fixed detection cylinder, an air cylinder is fixed on the bottom side of the plug plate, an air hole is opened on the wall of the air cylinder, the air cylinder slides through the bottom wall of the fixed detection cylinder, and a fan is installed on the plug plate, the fan is located in the air cylinder, the top of the air cylinder is connected with the inner cavity of the fixed detection cylinder, when the fan is working, the outside air is sucked into the fixed detection cylinder below the plug plate for smoke detection, the outer wall of the air cylinder is scraped and cleaned by using the wall of the fixed detection cylinder, and after the fan is turned off, the plug plate moves down and falls back to realize backblowing of the air cylinder, and blow away the removed dust.

[0006] Preferred technical solution 1: A return spring is connected between the plug plate and the top wall of the fixed detection tube, and the return spring pushes the plug plate back after the fan is turned off.

[0007] Preferred technical solution 2: An annular ring is fixed on the bottom side of the fixed detection cylinder, and bristles are arranged inside the annular ring. The air cylinder passes through the annular ring and is cleaned by the bristles.

[0008] Preferred technical solution three: An air pressure sensor is provided in the fixed detection cylinder below the plug plate, and the air pressure sensor is connected to the fan signal.

[0009] Preferred technical solution four: a spiral groove is provided on the inner wall of the fixed detection cylinder, and the plug plate slides along the spiral groove through a protrusion arranged on the side.

[0010] Preferred technical solution five: A plurality of groups of deceleration strips are arranged on the inner wall of the fixed detection cylinder from bottom to top, and the plug plate plays a deceleration role when sliding along the deceleration strips.

[0011] The above structure enables this solution to have the following beneficial effects:

[0012] 1. When setting a fan to increase the smoke detection rate, the inhaled air can be reused to provide power for cleaning the air holes, without the need to set up a power cleaning brush separately;

[0013] 2. In addition to using the airflow to clean the outer wall of the air cylinder with the bristles, the airflow can also be back-blown during the discharge process to blow the removed dust away to prevent it from falling back onto the air cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0016] Figure 2 This is a cross-sectional view of this scheme;

[0017] Figure 3 This is the exploded diagram of this scheme;

[0018] Figure 4 This is a schematic diagram of the structure of the air cylinder and plug plate of this scheme.

[0019] Among them, 1. alarm device body, 2. fixed detection cylinder, 21. spiral groove, 22. balance hole, 3. detection module, 4. plug plate, 41. protrusion, 5. air cylinder, 51. air hole, 6. fan, 7. reset spring, 8. deceleration corrugated bar, 9. annular ring, 10. bristles, 11. air pressure sensor, 12. buffer pad. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 2The smoke monitoring alarm device comprises an alarm device body 1, on which a fixed detection cylinder 2 is arranged, and a detection module 3 (using the existing technology) is arranged on the inner bottom wall of the fixed detection cylinder 2. The detection module 3 is used to detect smoke and an alarm is issued when smoke is detected. A plug plate 4 is slid in the fixed detection cylinder 2, and an air cylinder 5 is fixed on the bottom side of the plug plate 4. An air hole 51 is opened on the side wall of the air cylinder 5. The air cylinder 5 slides through the bottom wall of the fixed detection cylinder 2. At the same time, a fan 6 is installed on the plug plate 4. The fan blade part of the fan 6 is located in the air cylinder 5. The top of the air cylinder 5 is connected with the inner cavity of the fixed detection cylinder 2. When the fan 6 is working, the outside air is sucked into the air cylinder 5 from the air hole 51 on the air cylinder 5, and finally passes The gas passes through the gas cylinder 5 and enters the fixed detection cylinder 2 below the plug plate 4. At this time, the detection module 3 located below the plug plate 4 is used to detect smoke. As the gas entering the fixed detection cylinder 2 increases, the plug plate 4 continues to move upward, driving the gas cylinder 5 to slide into the fixed detection cylinder 2, and the outer wall of the gas cylinder 5 is scraped and cleaned by the wall of the fixed detection cylinder 2. A reset spring 7 is connected between the plug plate 4 and the top wall of the fixed detection cylinder 2. After the fan 6 is turned off, the reset spring 7 pushes the plug plate 4 back after the fan 6 is turned off. The plug plate 4 moves down and falls back. At this time, the airflow in the fixed detection cylinder 2 is pushed out by the downwardly moved plug plate 4 and overflows from the gas cylinder 5, realizing backblowing of the gas cylinder 5, blowing the removed dust away to prevent it from falling back onto the gas cylinder 5.

[0022] A buffer pad 12 is arranged in the fixed detection cylinder 2, and the buffer pad 12 is located above the detection module 3 and the air pressure sensor 11. When the fan 6 stops, the plug plate 4 contacts the buffer pad 12 when it falls back, so as to achieve buffering; deceleration strips 8 are arranged on the inner wall of the fixed detection cylinder 2 from bottom to top, and the plug plate 4 plays a deceleration role when sliding along the deceleration strips 8, so as to prevent the plug plate 4 from falling quickly under the push of the reset spring 7;

[0023] A balancing hole 22 is provided at the top of the fixed detection cylinder 2. The balancing hole 22 is used to discharge the air in the fixed detection cylinder 2 when the plug plate 4 moves up, and to suck in the outside air when the plug plate 4 moves down, so as to keep the air pressure in the fixed detection cylinder 2 above the plug plate 4 consistent with the outside air pressure.

[0024] See also Figure 1-Figure 3 , a smoke monitoring alarm device, an annular ring 9 is fixed to the bottom side of the fixed detection cylinder 2, and bristles 10 are arranged inside the annular ring 9. The gas cylinder 5 passes through the annular ring 9 and is cleaned by the bristles 10.

[0025] See also Figure 2-Figure 4 , a smoke monitoring alarm device, a spiral groove 21 is opened on the inner wall of the fixed detection cylinder 2, and the plug plate 4 slides along the spiral groove 21 through the protrusion 41 arranged on the side, so that when the plug plate 4 moves up and down in the fixed detection cylinder 2, it can also drive the air cylinder 5 to rotate, thereby increasing the cleaning effect of the bristles 10 on the air cylinder 5. At this time, the air cylinder 5 and the bottom wall of the fixed detection cylinder 2 are connected in a rotating and sliding manner.

[0026] See also Figure 2 , a smoke monitoring alarm device, an air pressure sensor 11 is arranged in the fixed detection cylinder 2 below the plug plate 4, and the air pressure sensor 11 is connected with the fan 6 signal. After detecting that the gas sucked into the fixed detection cylinder 2 by the fan 6 reaches a certain pressure, the fan 6 is turned off, and the sucked air is blown back and discharged by the return spring 7; the alarm device body 1 has a built-in controller (using the existing technology), the controller is electrically connected to the fan 6, the detection module 3 and the air pressure sensor 11, and is used to control its working state. The signals detected by the detection module 3 and the air pressure sensor 11 are fed back to the controller, and the fan 6 is controlled to be turned on and off by the controller.

[0027] Although 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. A smoke monitoring alarm device, comprising an alarm device body (1), characterized in that: The alarm device body (1) is provided with a fixed detection cylinder (2), the inner bottom wall of the fixed detection cylinder (2) is provided with a detection module (3), a plug plate (4) is slidably arranged in the fixed detection cylinder (2), an air cylinder (5) is fixed to the bottom side of the plug plate (4), an air hole (51) is opened on the wall of the air cylinder (5), the air cylinder (5) slides through the bottom wall of the fixed detection cylinder (2), and a fan (6) is installed on the plug plate (4), the fan (6) is located in the air cylinder (5), and the top end of the air cylinder (5) is connected to the inner cavity of the fixed detection cylinder (2).

2. A smoke monitoring alarm device according to claim 1, characterized in that: A return spring (7) is connected between the plug plate (4) and the top wall of the fixed detection cylinder (2).

3. A smoke monitoring alarm device according to claim 2, characterized in that: A plurality of groups of speed reduction strips (8) are arranged on the inner wall of the fixed detection cylinder (2) from bottom to top.

4. A smoke monitoring alarm device according to claim 2, characterized in that: A buffer pad (12) is arranged in the fixed detection cylinder (2), and the buffer pad (12) is located above the detection module (3) and the air pressure sensor (11).

5. A smoke monitoring alarm device according to claim 1, characterized in that: An annular ring (9) is fixed on the bottom side of the fixed detection cylinder (2), and brush bristles (10) are arranged inside the annular ring (9).

6. A smoke monitoring alarm device according to claim 1, characterized in that: An air pressure sensor (11) is provided in the fixed detection cylinder (2) below the plug plate (4), and the air pressure sensor (11) is connected to the fan (6) by signal.

7. A smoke monitoring alarm device according to claim 1, characterized in that: A balancing hole (22) is provided on the top of the fixed detection cylinder (2).

8. A smoke monitoring alarm device according to claim 5, characterized in that: The inner wall of the fixed detection cylinder (2) is provided with a spiral groove (21), and the plug plate (4) slides along the spiral groove (21) via a protrusion (41) arranged on the side.

Images