A smoke density tester for building materials

Abstract

This utility model discloses a smoke density tester for building materials, belonging to the field of smoke density testing technology. It includes a test cabinet with a sliding rod slidably mounted through one side wall of the lower part of the cabinet. A vertical mounting rod is fixedly connected to one end of the sliding rod inside the test cabinet. An upper mounting bracket and a lower mounting bracket are fixedly connected to the top and bottom ends of the mounting rod on the side facing away from the sliding rod, respectively. This smoke density tester for building materials uses a drive assembly to rotate the combustion tube. Pressing a switch on the side wall of the combustion tube connects the circuit, thereby igniting the combustion tube by generating a breakdown arc at two conductive pins in conjunction with a battery and a voltage booster module. The structure is simple, and compared to existing devices, it avoids the troublesome and dangerous problem of manual ignition, improving safety and stability.

Description

Technical Field

[0001] This utility model belongs to the field of smoke density testing technology, and in particular relates to a smoke density tester for building materials. Background Technology

[0002] A building material smoke density tester is an essential device for detecting the amount of smoke from building materials. It mainly consists of a fixed box, a door, a combustion device, a control device, and an exhaust device. The fixed box has a hinge shaft on its side, and the door is hinged to the side of the fixed box via the hinge shaft. The combustion device is fixedly connected inside the fixed box, the exhaust device is located on the top of the fixed box, and the control device is located on the fixed box. When building materials are placed on the combustion device for combustion, the building materials will produce smoke, which will drift to the top of the fixed box. The control device can then effectively detect the smoke concentration.

[0003] Existing smoke density testers for building materials require manual ignition of the combustion tube using a long-nozzle igniter, which is cumbersome and poses a certain degree of danger. Meanwhile, some automatic ignition devices have complex structures and are costly.

[0004] To address this issue, we propose a smoke density tester for building materials. Utility Model Content

[0005] The purpose of this invention is to solve the problems of troublesome and dangerous manual ignition of combustion tubes in the prior art, and to propose a smoke density tester for building materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A smoke density tester for building materials includes a test cabinet. A sliding rod is slidably mounted through one side wall of the lower part of the test cabinet. A vertical mounting rod is fixedly connected to one end of the sliding rod inside the test cabinet. An upper mounting frame and a lower mounting frame are fixedly connected to the top and bottom ends of the mounting rod facing away from the sliding rod, respectively. A first placement net is detachably connected and arranged vertically inside the upper mounting frame. A collection box is provided in the lower mounting frame directly below the first placement net. A counterweight rod is fixedly connected downwards to the end of the sliding rod outside the test cabinet. The bottom surface inside the test cabinet can rotate. The test cabinet is equipped with a combustion tube. A drive assembly for rotating the combustion tube is located at the bottom of the test cabinet. A light emitter and a light receiver are symmetrically fixed on both sides of the upper part of the test cabinet. An installation box is fixedly installed on the side wall of the test cabinet. A push switch is fixedly connected to the lower part of the installation box. A battery and a boost module are also installed inside the installation box. Two conductive pins are fixedly connected to the upper part of the installation box. The battery, push switch, high voltage module, and conductive pins are electrically connected in sequence. The high voltage at the conductive pins is broken down and the combustion tube is ignited by rotating the combustion tube and pressing the push switch.

[0008] Preferably, a second placement net can be detachably provided inside the upper mounting frame, and the aperture of the first placement net is larger than that of the second placement net, with the second placement net located directly below the first placement net.

[0009] Preferably, the upper mounting frame is U-shaped, and two parallel flanges are fixedly provided on the inner facing surfaces of the upper mounting frame. The first placement net is placed on the top surfaces of the two upper flanges, and the second placement net is placed on the top surfaces of the two lower flanges.

[0010] Preferably, the bottom of the mounting box is provided with a horizontally sliding moving block, and a pressing column that cooperates with the pressing switch is fixedly connected to the inner side of the moving block. The mounting box is provided with a compression spring that drives the moving block to move away from the pressing switch.

[0011] Preferably, the outer side of the mounting box is covered with a fireproof and heat-insulating layer.

[0012] Preferably, the conductive needle is located 5-30 mm above the top of the combustion tube.

[0013] In summary, the technical effects and advantages of this utility model are as follows: This building material smoke density tester achieves the rotation of the combustion tube through a drive component, and the circuit is connected by pressing the switch on the side wall of the combustion tube. In conjunction with the battery and the boost module, an electric arc is generated at the two conductive needles to break down the air, thereby igniting the combustion tube. The structure is simple, and compared with existing devices, it avoids the troublesome and dangerous problems of manual ignition, and improves safety and stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view of the present utility model;

[0016] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 This is a cross-sectional side view of the mounting box in this utility model.

[0018] In the diagram: 1. Test cabinet; 2. Sliding rod; 3. Mounting rod; 4. Upper mounting bracket; 5. Lower mounting bracket; 6. First placement net; 7. Collection box; 8. Counterweight rod; 9. Combustion tube; 10. Drive assembly; 11. Light emitter; 12. Light receiver; 13. Mounting box; 14. Push switch; 15. Battery; 16. Boost module; 17. Conductive needle; 18. Second placement net; 19. Flange; 20. Moving block; 21. Pressing post; 22. Compression spring; 23. Fireproof and heat-insulating layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A smoke density tester for building materials includes a test cabinet 1. A sliding rod 2 is slidably mounted through one side wall of the lower part of the test cabinet 1. A vertical mounting rod 3 is fixedly connected to one end of the sliding rod 2 inside the test cabinet 1. An upper mounting frame 4 and a lower mounting frame 5 are fixedly connected to the top and bottom ends of the mounting rod 3 on the side facing away from the sliding rod 2, respectively. A first placement net 6 is detachably connected and arranged vertically inside the upper mounting frame 4. A collection box 7 is located directly below the first placement net 6 inside the lower mounting frame 5. A counterweight rod 8 is fixedly connected downwards to the end of the sliding rod 2 outside the test cabinet 1. A combustion tube 9 is rotatably mounted on the bottom inner side of the test cabinet 1. A drive assembly 10 for driving the combustion tube 9 to rotate is located at the bottom of the test cabinet 1. A light emitter 11 and a light receiver 12 are symmetrically fixedly mounted on both sides of the upper part of the test cabinet 1, respectively. The drive assembly is prior art and may include a motor and transmission gears. Since it is very common in the field of smoke density testers, it will not be described in detail. (See reference...) Figure 1 , Figure 3 , Figure 4 A mounting box 13 is fixedly installed on the side wall of the test cabinet 1. A push switch 14 is fixedly connected to the lower part of the mounting box 13. The mounting box 13 also contains a battery 15 and a boost module 16. The battery 15 and the boost module 16 are existing technologies and will not be described in detail. Two conductive pins 17 are fixedly connected to the upper part of the mounting box 13. The battery 15, the push switch 14, the high voltage module and the conductive pins 17 are electrically connected in sequence. By rotating the combustion tube 9 and pressing the push switch 14, the high voltage at the two conductive pins 17 breaks down the air and ignites the combustion tube 9.

[0021] In use, this building material smoke density tester simply requires placing the building material in the center of the top surface of the first placement net 6 and then closing the cabinet door. The drive assembly 10 drives the combustion tube 9 to rotate until its side contacts the press switch 14. At this point, the conductive needle 17 is directly above the nozzle of the combustion tube 9, activating the gas supply. The drive assembly 10 continues to drive the combustion tube 9 to rotate until the press switch 14 connects the circuit. The power supply, in conjunction with the high-voltage module, creates a high potential difference between the two conductive needles 17, breaking down the air and forming an electric arc. This high-temperature arc ignites the gas ejected from the combustion tube 9, achieving ignition. After ignition, the drive assembly 10 drives the combustion tube 9 to rotate in the opposite direction to below the first placement net 6. With the help of the light emitter 11 and light receiver 12, the smoke density test of the building material can then begin.

[0022] Reference Figure 1-3The upper mounting bracket 4 also has a detachable second placement net 18, and the aperture of the first placement net 6 is larger than that of the second placement net 18. The second placement net 18 is located directly below the first placement net 6. By setting the second placement net 18, the problem of some materials falling directly into the collection box 7 during combustion shrinkage is avoided, which would affect the combustion effect and smoke density test effect, thus improving the test stability.

[0023] The upper mounting bracket 4 is U-shaped, and two parallel flanges 19 are fixedly provided on the inner facing surfaces of the upper mounting bracket 4. The first placement net 6 is placed on the top surface of the two upper flanges 19, and the second placement net 18 is placed on the top surface of the two lower flanges 19. The flanges 19 are used to place the first placement net 6 and the second placement net 18.

[0024] Reference Figure 4 A movable block 20 is horizontally slidable at the bottom of the mounting box 13. A pressing post 21 that cooperates with the pressing switch 14 is fixedly connected to the inner side of the movable block 20. A compression spring 22 is provided inside the mounting box 13 to drive the movable block 20 to move away from the pressing switch 14. The movable block 20 can protect the pressing switch 14, thereby avoiding the problem that the pressing switch 14 needs to be placed on the outside of the mounting box 13 for the combustion tube 9 to press. Placing the pressing switch 14 inside the mounting box 13 can avoid external interference affecting the pressing switch 14, thereby improving its service life and stability.

[0025] The mounting box 13 is covered with a fireproof and heat-insulating layer 23. The fireproof and heat-insulating layer 23 can be installed by spraying fireproof material onto the surface of the mounting box. The fireproof material is existing technology and will not be described in detail. The fireproof and heat-insulating layer 23 can prevent the flame of the combustion tube 9 from causing excessive heating of the inside of the mounting box 13 through heat radiation, which would affect the stability of the battery 15, the boost module 16, and the push switch 14, thus improving the stability and safety of use.

[0026] The conductive needle 17 is located 5-30mm above the top of the combustion tube 9. If the conductive needle 17 is too high, it will affect the ignition effect. If the conductive needle 17 is too low, it may collide with the combustion tube 9. A height of 5-30mm can achieve a more stable ignition effect.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smoke density tester for building materials, comprising a test cabinet (1), characterized in that, On one side wall at the lower part of the test cabinet (1), a sliding rod (2) is slidably penetrated and arranged, and one end of the sliding rod (2) located inside the test cabinet (1) is fixedly connected with a vertical mounting rod (3). At the top and bottom of the side of the mounting rod (3) facing away from the sliding rod (2), an upper mounting frame (4) and a lower mounting frame (5) are respectively fixedly connected. Inside the upper mounting frame (4), a first placement net (6) is detachably connected in an up-and-down arrangement. Inside the lower mounting frame (5), a collection box (7) is arranged directly below the first placement net (6). One end of the sliding rod (2) located outside the test cabinet (1) is fixedly connected downward with a counterweight rod (8). On the inner bottom surface of the test cabinet (1), a combustion tube (9) is rotatably arranged, and at the bottom of the test cabinet (1), a driving component (10) for driving the combustion tube (9) to rotate is provided. On both sides at the upper part of the test cabinet (1), an optical transmitter (11) and an optical receiver (12) are symmetrically and fixedly installed respectively; on the side wall of the test cabinet (1), an installation box (13) is fixedly installed. At the lower part of the installation box (13), a push switch (14) is fixedly connected. Inside the installation box (13), a battery (15), a boost module (16) are also arranged. At the upper part of the installation box (13), two conductive pins (17) are fixedly connected. The battery (15), the push switch (14), the high-voltage module and the conductive pins (17) are electrically connected in sequence. By rotating the combustion tube (9) to press the push switch (14), the high voltage at the conductive pins (17) is broken down to ignite the combustion tube (9).

2. The smoke density tester for building materials according to claim 1, characterized in that, Inside the upper mounting frame (4), a second placement net (18) is also detachably arranged, and the aperture of the first placement net (6) is larger than that of the second placement net (18). The second placement net (18) is located directly below the first placement net (6).

3. The smoke density tester for building materials according to claim 2, characterized in that, The upper mounting frame (4) is in a C shape, and on the opposite inner surfaces of the upper mounting frame (4), two parallel flanges (19) are fixedly arranged respectively. The first placement net (6) is placed on the top surfaces of the two upper flanges (19), and the second placement net (18) is placed on the top surfaces of the two lower flanges (19).

4. The smoke density tester for building materials according to claim 1, characterized in that, At the bottom end of the installation box (13), a moving block (20) is slidably arranged horizontally. Inside the moving block (20), a push column (21) for cooperating with the push switch (14) is fixedly connected. Inside the installation box (13), a compression spring (22) for driving the moving block (20) to move away from the push switch (14) is arranged.

5. A smoke density tester for building materials according to claim 1, characterized in that, A fireproof and heat-insulating layer (23) is covered on the outside of the installation box (13).

6. The smoke density tester for building materials according to claim 1, characterized in that, The conductive pins (17) are located 5 - 30 mm above the top end of the combustion tube (9).

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