Detection device of linear light beam smoke detector

Abstract

The utility model provides a detection device of a linear light beam smoke detector, which relates to the technical field of fire-fighting detection devices and comprises a telescopic rod, an adjusting rod, a card frame and a dimming sheet. A connecting sleeve is arranged on a movable rod body of the telescopic rod, the adjusting rod is rotationally installed in the connecting sleeve and arranged on the side of the telescopic rod, the four card frames are evenly installed on the top of the adjusting rod, the middle points of the bottom edges of the card frames are opposite to the axis of the adjusting rod, and the light reducing pieces are installed in the card frames respectively. According to the invention, the problems that only one dimmer can be used at a time in the current detection mode, the dimmer is inconvenient to replace, an operator needs to repeatedly find a spatial position after lifting the dimmer by using a long rod, the dimmer is aligned with a light emitting head of the detector, and the operation is inconvenient can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire detection devices, in particular to a detection device for a linear light beam smoke detector. Background Art

[0002] Linear beam smoke detectors use infrared rays to form a detection source, and the diffusion of smoke can detect fires within a fixed range around the infrared rays. Linear beam smoke detectors are usually composed of a pair of separately installed and adjusted infrared emitters and light receivers. The working principle is to use smoke to reduce the amount of light beam emitted by the infrared emitter to the infrared light receiver to determine a fire.

[0003] In order to ensure that the linear beam smoke detector can work normally when a fire occurs, it is necessary to regularly inspect the linear beam smoke detector for faults. The detection method is to use a dimming film to block and reduce the amount of light beam from the infrared light emitter to the infrared light receiver to simulate a fire, record the alarm signal and its response threshold, and thus detect whether the smoke detector is operating normally. Linear beam smoke detectors are generally installed at a high position, and the operator will fix the dimming film on a long pole to detect the detector.

[0004] The current detection method has the following inconveniences: First, since the response threshold of the detector should be no less than 1.0dB and no more than 10dB, at least two dimming films are required to detect a smoke detector, while the current detection method can only use one dimming film at a time and the dimming film is inconvenient to replace; second, the detector is installed at a high position, and the operator needs to repeatedly find the spatial position to align the dimming film with the light emitting head of the detector after lifting the dimming film with a long pole, which is inconvenient and inefficient. Utility Model Content

[0005] In order to overcome the problems in the background technology, the utility model provides a detection device for a linear light beam smoke detector, which solves the problems that the current detection method can only use one dimming film at a time, the dimming film is inconvenient to replace, and the operator needs to repeatedly search for the spatial position after lifting the dimming film with a long pole and align the dimming film with the light emitting head of the detector, which is inconvenient to operate.

[0006] A detection device for a linear beam smoke detector comprises a telescopic rod, an adjusting rod, a card frame and a dimming film; a connecting sleeve is arranged on the movable rod body of the telescopic rod, the adjusting rod is rotatably installed in the connecting sleeve and arranged on the side of the telescopic rod, four card frames are evenly installed on the top of the adjusting rod, the midpoint of the bottom edge of the card frame is opposite to the axis of the adjusting rod, and the dimming film is installed in each card frame.

[0007] Furthermore, a positioning light is installed on the top of the telescopic rod.

[0008] Furthermore, a rotating handle is provided at the bottom end of the adjusting rod, and a limited position is provided on the rod body of the adjusting rod to cooperate with a limited groove provided in the connecting sleeve, and the position and number of the limited grooves correspond to the card frame.

[0009] Furthermore, a slot is provided at the top of the card frame and extends to the bottom of the card frame.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The present application is provided with an adjustment rod, and a plurality of dimming films are installed on the top of the adjustment rod. The dimming films with different dimming rates can be changed by rotating the adjustment rod, and there is no need to reinstall different dimming films as in the existing detection method. The detection effect of the detector under multiple dimming rates can be detected at one time, which solves the problem that only one dimming film can be used at a time in the current detection method, and the dimming film is inconvenient to replace;

[0012] The present application is provided with a positioning light, which can point to the position of the dimming film by shining the light source on the wall, making it convenient for the operator to hold the telescopic rod and move the dimming film close to the detector, thereby avoiding the problem that the current detection operator needs to repeatedly find the spatial position to align the dimming film with the detector after raising the long rod, which is inconvenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connecting sleeve structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the card frame structure of the utility model.

[0017] 1-telescopic rod, 11-connecting sleeve, 2-adjusting rod, 21-rotating handle, 22-limiting point, 23-limiting slot, 3-card frame, 31-slot, 4-dim-film, 5-positioning light. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0019] The utility model discloses a detection device for a linear beam smoke detector, referring to Figure 1-3A detection device of a linear beam smoke detector comprises a telescopic rod 1, an adjusting rod 2, a card frame 3 and a dimming film 4; a connecting sleeve 11 is arranged on the movable rod body of the telescopic rod 1, the adjusting rod 2 is rotatably installed in the connecting sleeve 11 and arranged on the side of the telescopic rod 1, four card frames 3 are evenly installed on the top of the adjusting rod 2, the midpoint of the bottom edge of the card frame 3 is opposite to the axis of the adjusting rod 2, and the dimming film 4 is installed in each card frame 3.

[0020] The telescopic rod 1 can adjust the height so that the dimming film 4 reaches the installation height of the smoke detector. The adjusting rod 2 can rotate at the connecting sleeve 11 to change the direction of the card frame 3 installed on the top, so that the dimming film 4 with different dimming rates installed in the card frame 3 is aligned with the smoke detector for detection, which solves the problem that the current detection method can only use one dimming film at a time and the dimming film is inconvenient to replace.

[0021] See also Figure 1-3 A positioning light 5 is installed at the top of the telescopic rod 1. The positioning light 5 is an infrared positioning light or a laser positioning light. The positioning light 5 is provided with a switch and is powered by a battery. When turned on, it can emit a light source in the same direction as the dimming film 4 under the card frame 3. By irradiating the light source on the wall to the moving position of the dimming film 4, it is convenient for the operator to hold the telescopic rod 1 and move the dimming film 4 close to the detector, avoiding the problem that the operator needs to repeatedly find the spatial position to align the dimming film with the detector after lifting the long rod.

[0022] See also Figure 1-3 A rotating handle 21 is provided at the bottom end of the adjusting rod 2, which is convenient for rotating the adjusting rod 2 to reverse the dimmer 4. A limited position 22 is provided on the rod body of the adjusting rod 2 to cooperate with a limited groove 23 provided in the connecting sleeve 11. The position and number of the limited grooves 23 correspond to the card frame 3, which is convenient for controlling the dimmer 4 to turn 90° to align with the detector without blocking each other.

[0023] See also Figure 1-3 A slot 31 is provided at the top of the card frame 3 and extends to the bottom of the card frame 3 to facilitate installation of the dimming film 4.

[0024] Working process:

[0025] Install dimming films 4 with different dimming rates in the card frame 3, turn on the positioning light 5, adjust the telescopic rod 1 to adjust the height so that the dimming film 4 reaches the installation height of the smoke detector, rotate the adjusting rod 2 by rotating the handle 21 to align the required dimming film 4 with the smoke detector, and use the dimming film 4 to block and reduce the amount of light beam from the detector to the infrared light receiver to simulate a fire, record the alarm signal and its response threshold, and thus detect whether the smoke detector is operating normally.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detection device for a linear optical beam smoke detector, characterized in that: The invention comprises a telescopic rod (1), an adjusting rod (2), a card frame (3) and a light-reducing film (4); a connecting sleeve (11) is arranged on the movable rod body of the telescopic rod (1); the adjusting rod (2) is rotatably mounted in the connecting sleeve (11) and arranged on the side of the telescopic rod (1); four card frames (3) are evenly mounted on the top of the adjusting rod (2); the midpoint of the bottom edge of the card frame (3) is opposite to the axis of the adjusting rod (2); and the light-reducing film (4) is mounted in each card frame (3).

2. The detection device of the linear optical beam smoke detector according to claim 1, characterized in that: A positioning light (5) is installed on the top end of the telescopic rod (1).

3. The detection device of the linear optical beam smoke detector according to claim 1, characterized in that: The bottom end of the adjusting rod (2) is provided with a rotating handle (21), and a limiting point (22) is provided on the rod body of the adjusting rod (2) to cooperate with a limiting groove (23) provided in the connecting sleeve (11), and the position and number of the limiting grooves (23) correspond to the card frame (3).

4. The detection device of the linear optical beam smoke detector according to claim 1, characterized in that: The top of the card frame (3) is provided with a slot (31) extending to the bottom of the card frame (3).

Images