Building board formaldehyde environment cabin

Abstract

The application relates to the technical field of formaldehyde release detection equipment, in particular to a building board formaldehyde environment cabin, which comprises an environment cabin body, a formaldehyde analyzer body, a limiting plate, a heating chamber, a gas conveying pipeline, a rotary clamping assembly and a lifting balance assembly. The output end of the formaldehyde analyzer body penetrates through the top inner wall of the environment cabin body and is closely combined with the inner surface of the environment cabin body. The lifting balance assembly is installed below the rotary clamping assembly. The building board formaldehyde environment cabin of the application makes the board slowly rotate in the detection process through the rotary clamping assembly, avoids unilateral heating, eliminates the local high-temperature area and low-temperature area caused by traditional fixed placement, makes the board as a whole heat more evenly, reduces the moisture migration and stress cracking caused by the temperature gradient, ensures the stability of the formaldehyde release path, prevents the hot air from directly blowing on a certain point to cause the sudden drop of the local moisture content of the board, and thus maintains the stable formaldehyde diffusion rate.

Description

Technical Field

[0001] This application relates to the field of formaldehyde emission detection equipment technology, and in particular to a formaldehyde environmental chamber for building materials. Background Technology

[0002] Formaldehyde is an organic chemical substance, a colorless and irritating gas that can irritate the eyes and nose. It has reducing properties, especially in alkaline solutions, and is flammable. Its vapor can form an explosive mixture with air. Therefore, there are certain regulations on the formaldehyde release from building decoration materials.

[0003] A search revealed that CN219715459U discloses a formaldehyde detection device for wood panels. The device is held by a handle, and the base plate is fixed with bolt holes and screws, or with a suction cup. An electric push rod drives a concentrator downwards via a connecting plate and mounting rod, causing the concentrator to adhere to the surface of the wood panel. A heater heats the inside of the concentrator, facilitating the release of formaldehyde from the wood panel. A temperature sensor monitors the internal temperature of the concentrator in real time to prevent overheating. A controller controls a micro-air pump to draw air from inside the concentrator and transmit it to a formaldehyde detector for testing.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist that need improvement: The placement of the panels in the chamber is fixed, and the uniformity of heating of the panels will significantly affect the rate and total amount of formaldehyde release. For panels of different thicknesses, compared to the thinnest panels, the surface of the thickest panels is located in the high-temperature zone, where moisture evaporates faster, which will change the local moisture content of the panels and thus affect the formaldehyde diffusion rate. Uneven heating will cause uneven expansion and contraction of the panels, resulting in microcracks, which will change the formaldehyde release path and thus cause unstable formaldehyde concentration distribution in the chamber, thereby reducing the detection accuracy. Utility Model Content

[0005] This application provides a formaldehyde environmental chamber for building panels to improve the following technical problems: In the above-mentioned device, the panels are placed in a fixed position in the chamber. The uniformity of heating of the panels will significantly affect the rate and total amount of formaldehyde release. For panels of different thicknesses, compared with the thinnest panels, the surface of the thickest panels is located in the high-temperature zone. The moisture evaporates faster in the high-temperature zone, which will change the local moisture content of the panels and thus affect the formaldehyde diffusion rate. Uneven heating will cause uneven expansion and contraction of the panels, resulting in microcracks, which will change the formaldehyde release path and thus cause the formaldehyde concentration distribution in the chamber to be unstable, thereby reducing the detection accuracy.

[0006] This application provides a formaldehyde-containing environmental chamber for building materials, employing the following technical solution:

[0007] A formaldehyde-contaminated environmental chamber for building materials includes an environmental chamber body, a formaldehyde analyzer body, a limiting plate, a heating chamber, a gas supply pipe, a rotating clamping assembly, and a lifting and balancing assembly. The output end of the formaldehyde analyzer body penetrates through the top inner wall of the environmental chamber body and is tightly fitted to the inner surface of the environmental chamber body. The limiting plate is slidably connected to both sides of the interior of the environmental chamber body. The heating chamber is fixedly connected to the outside of the environmental chamber body. The gas supply pipe is installed on the bottom outer side of the heating chamber body and is tightly fitted to one side of the inner wall of the environmental chamber body. The rotating clamping assembly is slidably connected to one side of the limiting plate. The lifting and balancing assembly is installed below the rotating clamping assembly.

[0008] The environmental chamber is used to house the boards and provide a sealed environment. The formaldehyde analyzer body is used to sample the air in the environmental chamber and measure the formaldehyde release. The heating chamber is used to isolate the environmental chamber and prevent the boards inside from being heated in a concentrated manner. The gas supply pipe is used to discharge hot air at a specified temperature into the interior of the environmental chamber. The rotating clamping assembly is used to clamp and rotate the boards to ensure that the surface of the boards is heated evenly. The lifting and balancing assembly is used to raise the rotating clamping assembly and the clamped boards to the outside of the air outlet of the gas supply pipe and to position boards of different thicknesses facing the outside of the gas supply pipe to synchronize the heating height of the boards.

[0009] In one feasible technical solution of this application, the rotary clamping assembly includes a lifting four-jaw bracket, a reduction motor, a connecting shaft, a guide shaft, and a clamping arm body. The lifting four-jaw bracket is slidably connected to the inner side of the limiting plate. The reduction motor is installed on one side of the lifting four-jaw bracket. The connecting shaft is fixedly connected to the outer side of the output end of the reduction motor. The guide shaft is rotatably connected to the top of the lifting four-jaw bracket. The clamping arm body is fixedly connected to the outer side of the guide shaft and is used to clamp the plate.

[0010] In one feasible technical solution of this application, the lifting and balancing assembly includes a lifting cylinder, a lifting plate, and a support plate. The lifting cylinder is installed at the bottom center of the environmental chamber. The lifting plate is fixedly connected above the output end of the lifting cylinder. The support plate is fixedly connected to both sides of the lifting plate, and the surface of the support plate is slidably connected to the inside of the limiting plate.

[0011] In one feasible technical solution of this application, the interior of the limiting plate is provided with a sliding groove and a through groove that are adapted to the size of the connection between the lifting four-claw bracket and the support plate.

[0012] In one feasible technical solution of this application, the outer sides of the connecting shaft and the guide shaft are further provided with mutually meshing transmission gears.

[0013] In one feasible technical solution of this application, a protective cover and a push cylinder are also provided on the outside of the environmental chamber. The protective cover is fixedly connected to the surface of the environmental chamber, the push cylinder is installed inside the protective cover, and the output end of the push cylinder is fixedly connected to the surface of the limiting plate.

[0014] In one feasible technical solution of this application, the gas transmission pipeline is located inside the environmental chamber and is also provided with several sets of equally spaced gas outlet nozzles.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This device uses a rotating clamping assembly to slowly rotate the board during testing, avoiding unilateral heating and eliminating localized high-temperature and low-temperature zones caused by traditional fixed placement. This results in more uniform heating of the board, reducing moisture migration and stress cracking caused by temperature gradients and ensuring a stable formaldehyde release path. A lifting cylinder, in conjunction with a lifting plate, adjusts the height of the board, ensuring it is always directly aligned with the air outlet of the gas pipeline. This ensures even coverage of hot air and prevents overheating of thick boards due to excessive height or insufficient heating of thin boards due to excessive height. Dynamic height adjustment ensures consistent heating conditions for boards of different thicknesses, improving data comparability. Combined with the rotating clamping mechanism, it prevents direct hot air from blowing onto a single point, thus preventing a sudden drop in localized moisture content and maintaining a stable formaldehyde diffusion rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the formaldehyde-enhancing chamber for building materials according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the internal structure of the environmental chamber and protective cover in the embodiments of this application.

[0020] Figure 3 This is a distribution diagram of the heating chamber in an embodiment of this application.

[0021] Figure 4 This is a connection diagram of the limiting plate and the support plate in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the structure of the rotating clamping assembly in the embodiments of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Environmental chamber; 2. Formaldehyde analyzer body; 3. Limiting plate; 4. Heating chamber; 5. Gas supply pipeline;

[0025] 6. Rotary clamping assembly; 61. Lifting four-jaw bracket; 62. Gear motor; 63. Connecting shaft; 64. Guide shaft; 65. Clamping arm body;

[0026] 7. Lifting and balancing assembly; 71. Lifting cylinder; 72. Lifting plate; 73. Support plate;

[0027] 8. Slide groove; 9. Through groove; 10. Transmission gear; 11. Protective cover; 12. Push cylinder; 13. Air nozzle; 14. Electric heating tube. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a formaldehyde-enhancing chamber for building materials. (Refer to...) Figures 1 to 5 The formaldehyde environmental chamber for building materials includes an environmental chamber body 1, a formaldehyde analyzer body 2, a limiting plate 3, a heating chamber 4, a gas supply pipe 5, a rotating clamping assembly 6, and a lifting and balancing assembly 7. The output end of the formaldehyde analyzer body 2 passes through the top inner wall of the environmental chamber body 1 and is tightly fitted to the inner surface of the environmental chamber body 1. The limiting plate 3 is slidably connected to both sides inside the environmental chamber body 1. The heating chamber 4 is fixedly connected to the outside of the environmental chamber body 1. The gas supply pipe 5 is installed on the bottom outside of the heating chamber 4 and is tightly fitted to one side of the inner wall of the environmental chamber body 1. The rotating clamping assembly 6 is slidably connected to one side of the limiting plate 3. The lifting and balancing assembly 7 is installed below the rotating clamping assembly 6.

[0034] The environmental chamber 1 is used to place the boards and provide a sealed environment. The formaldehyde analyzer body 2 is used to sample the air in the environmental chamber 1 and measure the formaldehyde release. The heating chamber 4 is used to isolate the environmental chamber 1 and prevent the internal boards from being heated in a concentrated manner. The air supply pipe 5 is used to discharge hot air at a specified temperature into the interior of the environmental chamber 1. The rotating clamping assembly 6 is used to clamp and rotate the boards to ensure that the surface of the boards is heated evenly. The lifting and balancing assembly 7 is used to raise the rotating clamping assembly 6 and the clamped boards to the outside of the air outlet of the air supply pipe 5 and to align boards of different thicknesses with the outside of the air supply pipe 5 to synchronize the heating height of the boards.

[0035] The rotary clamping assembly 6 includes a lifting four-jaw bracket 61, a reduction motor 62, a connecting shaft 63, a guide shaft 64, and a clamping arm body 65. The lifting four-jaw bracket 61 is slidably connected to the inner side of the limiting plate 3. The reduction motor 62 is installed on one side of the lifting four-jaw bracket 61. The connecting shaft 63 is fixedly connected to the outer side of the output end of the reduction motor 62. The guide shaft 64 is rotatably connected to the top of the lifting four-jaw bracket 61. The clamping arm body 65 is fixedly connected to the outer side of the guide shaft 64 and is used to clamp the plate.

[0036] The lifting and balancing assembly 7 includes a lifting cylinder 71, a lifting plate 72, and a support plate 73. The lifting cylinder 71 is installed at the bottom center of the environmental chamber 1. The lifting plate 72 is fixedly connected above the output end of the lifting cylinder 71. The support plate 73 is fixedly connected to both sides of the lifting plate 72, and the surface of the support plate 73 is slidably connected to the inside of the limiting plate 3.

[0037] The interior of the limiting plate 3 is provided with a sliding groove 8 and a through groove 9 that are adapted to the size of the connection between the lifting four-claw bracket 61 and the support plate 73.

[0038] The outer sides of the connecting shaft 63 and the guide shaft 64 are also provided with meshing transmission gears 10.

[0039] The outer side of the environmental chamber 1 is also provided with a protective cover 11 and a push cylinder 12. The protective cover 11 is fixedly connected to the surface of the environmental chamber 1, and the push cylinder 12 is installed inside the protective cover 11. The output end of the push cylinder 12 is fixedly connected to the surface of the limit plate 3.

[0040] The gas pipeline 5 is located inside the environmental chamber 1 and is also equipped with several sets of equally spaced gas outlet nozzles 13.

[0041] The usage process of the formaldehyde-containing environmental chamber for building materials in this embodiment of the application is roughly as follows:

[0042] Open the protective cover 11, and slide the two limiting plates 3 outward by pushing the cylinder 12 to place the test material horizontally on the lifting four-jaw bracket 61. Adjust the distance between the two clamping arm bodies 65 to ensure stable clamping of materials of different specifications. Operate the lifting cylinder 71 to lift the material, and the support plate 73 provides double-sided balanced support. The height is automatically calibrated according to the material thickness so that the center plane of the sample is directly facing the air outlet nozzle 13 array. Then, start the electric heating tube 14 inside the heating chamber 4 and heat it to the specified temperature. The hot air is evenly sprayed out from multiple sets of air outlet nozzles 13 through the gas delivery pipe 5. At the same time, start the reduction motor 62. The reduction motor 62 drives the connecting shaft 63 and the guide shaft 64 to rotate synchronously through the transmission gear 10. The clamping arm body 65 rotates the material at a uniform speed of 2-5 rpm. The rotation clamping ensures that the six sides of the material are evenly heated. After a stable temperature field is formed in the environmental chamber 1, the formaldehyde analyzer body 2 begins to sample periodically, collecting the mixed gas in the chamber every 15 minutes and automatically recording the concentration data at different rotation phases.

[0043] The beneficial technical effects of the formaldehyde-containing environmental chamber for building materials in this application embodiment are roughly as follows:

[0044] This device uses a rotating clamping assembly 6 to slowly rotate the board during testing, avoiding unilateral heating and eliminating localized high-temperature and low-temperature zones caused by traditional fixed placement. This results in more uniform heating of the board, reducing moisture migration and stress cracking caused by temperature gradients and ensuring a stable formaldehyde release path. The lifting cylinder 71, in conjunction with the lifting plate 72, adjusts the height of the board to ensure it is always directly aligned with the air outlet of the gas pipeline 5. This ensures uniform coverage of hot air and prevents overheating of thick boards due to excessive height or insufficient heating of thin boards due to excessive height. By dynamically adjusting the height, the heating conditions of boards of different thicknesses are made consistent, improving data comparability. Combined with the rotating clamping, it prevents hot air from blowing directly onto a single point, which could cause a sudden drop in the local moisture content of the board, thereby maintaining a stable formaldehyde diffusion rate.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A formaldehyde-rich environment chamber for building materials, characterized in that, The device includes an environmental chamber (1), a formaldehyde analyzer body (2), a limiting plate (3), a heating chamber (4), a gas supply pipe (5), a rotating clamping assembly (6), and a lifting and balancing assembly (7). The output end of the formaldehyde analyzer body (2) passes through the top inner wall of the environmental chamber (1) and is tightly fitted to the inner surface of the environmental chamber (1). The limiting plate (3) is slidably connected to both sides inside the environmental chamber (1). The heating chamber (4) is fixedly connected to the outside of the environmental chamber (1). The gas supply pipe (5) is installed on the bottom outside of the heating chamber (4) and is tightly fitted to one side of the inner wall of the environmental chamber (1). The rotating clamping assembly (6) is slidably connected to one side of the limiting plate (3). The lifting and balancing assembly (7) is installed below the rotating clamping assembly (6). The environmental chamber (1) is used to place the board and provide a sealed environment. The formaldehyde analyzer body (2) is used to sample the air in the environmental chamber (1) and measure the formaldehyde release. The heating chamber (4) is used to isolate the environmental chamber (1) and prevent the internal board from being heated in a concentrated manner. The gas supply pipe (5) is used to discharge hot air at a specified temperature into the interior of the environmental chamber (1). The rotating clamping assembly (6) is used to clamp and rotate the board to ensure that the surface of the board is heated evenly. The lifting and balancing assembly (7) is used to raise the rotating clamping assembly (6) and the clamped board to the outside of the air outlet of the gas supply pipe (5) and to align boards of different thicknesses with the outside of the gas supply pipe (5) to synchronize the heating height of the boards.

2. The formaldehyde-enhancing chamber for building materials according to claim 1, characterized in that, The rotating clamping assembly (6) includes a lifting four-jaw bracket (61), a reduction motor (62), a connecting shaft (63), a guide shaft (64), and a clamping arm body (65). The lifting four-jaw bracket (61) is slidably connected to the inner side of the limiting plate (3). The reduction motor (62) is installed on one side of the lifting four-jaw bracket (61). The connecting shaft (63) is fixedly connected to the outer side of the output end of the reduction motor (62). The guide shaft (64) is rotatably connected to the top of the lifting four-jaw bracket (61). The clamping arm body (65) is fixedly connected to the outer side of the guide shaft (64) and is used to clamp the plate.

3. The formaldehyde-enhancing chamber for building materials according to claim 2, characterized in that, The lifting and balancing assembly (7) includes a lifting cylinder (71), a lifting plate (72), and a support plate (73). The lifting cylinder (71) is installed at the bottom center of the environmental chamber (1). The lifting plate (72) is fixedly connected above the output end of the lifting cylinder (71). The support plate (73) is fixedly connected to both sides of the lifting plate (72), and the surface of the support plate (73) is slidably connected to the inside of the limiting plate (3).

4. The formaldehyde-enhancing chamber for building materials according to claim 3, characterized in that, The limiting plate (3) is provided with a sliding groove (8) and a through groove (9) that are adapted to the size of the connection between the lifting four-claw bracket (61) and the support plate (73).

5. The formaldehyde-enhancing chamber for building materials according to claim 2, characterized in that, The outer sides of the connecting shaft (63) and the guide shaft (64) are also provided with mutually meshing transmission gears (10).

6. The formaldehyde-enhancing chamber for building materials according to claim 1, characterized in that, The outer side of the environmental chamber (1) is also provided with a protective cover (11) and a push cylinder (12). The protective cover (11) is fixedly connected to the surface of the environmental chamber (1), and the push cylinder (12) is installed inside the protective cover (11). The output end of the push cylinder (12) is fixedly connected to the surface of the limiting plate (3).

7. The formaldehyde-enhancing chamber for building materials according to claim 1, characterized in that, The gas pipeline (5) is located inside the environmental chamber (1) and is also equipped with several sets of equally spaced gas nozzles (13).

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