A device for preventing deformation of a solid wood board after processing and forming

Abstract

This invention relates to the field of solid wood processing technology, and in particular to a device for preventing deformation after solid wood processing and forming. The device includes a pressure-resistant chamber, and further includes: multiple limiting platforms, arranged in an array and fixed to the inner wall of the pressure-resistant chamber; a pressure plate, disposed inside the pressure-resistant chamber, with its edge fixed to a locking platform adapted to the limiting platforms; multiple friction pads, respectively fixed to the opposite sides of the locking platforms and the limiting platforms; and multiple waterproof sleeves, respectively fitted onto the exterior of each solid wood board. The solid wood boards are arranged in a vertical linear array inside the pressure-resistant chamber. When liquid is added inside the pressure-resistant chamber, the surface of the solid wood boards is uniformly compressed under hydraulic pressure. This device adjusts the pressure applied to the solid wood boards by regulating the type and depth of the liquid being supplied. For example, water can be used as the liquid, and the water pressure is evenly distributed on the surface of the solid wood boards, thereby ensuring a uniform distribution of pressure and improving the anti-deformation treatment effect.

Description

Technical Field

[0001] This invention relates to the field of solid wood board processing, and in particular to a device for preventing deformation after solid wood boards have been processed and formed. Background Technology

[0002] Solid wood flooring is a floor covering material made from whole pieces of natural wood through drying and processing. Its core value lies in its natural texture, comfortable feel underfoot, and environmentally friendly properties. Due to the "shrinkage and expansion" characteristic of wood, as a material that is laid over a large area and fixed in place, the flooring will absorb or release moisture due to changes in environmental humidity, resulting in uneven expansion or contraction. Without treatment, this can easily lead to serious deformations such as warping, cracking, and gapping, which not only affect aesthetics and flatness but also shorten its lifespan and increase maintenance costs. Therefore, scientific drying, shaping, and stabilization treatments are key processes to ensure the dimensional stability and reliability of solid wood flooring.

[0003] In existing technologies, the anti-deformation treatment of solid wood flooring after molding is usually carried out by pressure shaping and drying. However, if the pressure is uneven during the pressure treatment of solid wood boards, it will cause the solid wood boards to deform during the drying process. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for preventing deformation after solid wood boards have been processed and formed.

[0005] This invention provides a device for preventing deformation after solid wood boards are processed and formed, including a pressure-resistant box body, and further comprising:

[0006] Multiple limiting platforms are fixed in an array to the inner wall of the pressure-resistant box;

[0007] A pressure plate is disposed inside the pressure-resistant box, and the edge of the pressure plate is fixed with a snap-fit ​​platform that is compatible with the limiting platform;

[0008] Multiple friction pads are respectively fixed on the opposite sides of the snap-fit ​​platform and the limiting platform;

[0009] Multiple waterproof sleeves are respectively fitted onto the outside of each solid wood board. The solid wood boards are arranged in a vertical linear array inside the pressure-resistant box. When liquid is added inside the pressure-resistant box, the surface of the solid wood boards is uniformly squeezed under hydraulic pressure.

[0010] When treating solid wood boards to prevent deformation, a waterproof sleeve is placed over the solid wood boards to be treated. Then, the solid wood boards with the waterproof sleeve are placed inside the pressure-resistant chamber and stacked vertically. After stacking, a pressure plate is snapped onto a limiting platform using a snap-fit ​​device to limit the highest position of the solid wood boards. Then, liquid is pumped into the pressure-resistant chamber. Different liquid densities and liquid depths result in different pressures on the solid wood boards. By adjusting the type and depth of the liquid, the pressure applied to the solid wood boards can be adjusted. For example, water can be used, and the water pressure is evenly distributed on the surface of the solid wood boards, thus ensuring a uniform distribution of pressure and improving the anti-deformation treatment effect.

[0011] Preferably, it further includes:

[0012] Multiple partitions are placed between adjacent solid wood boards;

[0013] The partitions separate the solid wood boards. The partitions have a flat and hard surface, which makes the contact surface flat when the partitions are placed between the solid wood boards. This helps to shape the boards during the anti-deformation treatment process and improve the anti-deformation effect.

[0014] Preferably, it further includes:

[0015] Two sets of first straight pipes, two first straight pipes forming a group, are respectively set on both sides of the partition, and the top of both sets of first straight pipes extends out after penetrating the top of the pressure-resistant box;

[0016] Multiple inner grooves are respectively formed inside the partition;

[0017] Multiple second straight pipes are respectively fixedly connected to the side wall of the partition;

[0018] Multiple sets of first insertion tubes, four first insertion tubes as a group, are fixedly connected to the bottom of the second straight tube, and a sealing plug is provided inside the bottom first insertion tube;

[0019] Multiple sets of second insertion tubes, four second insertion tubes as a group, are fixedly connected to the top of the second straight tube respectively, and the topmost second insertion tube is connected to the first straight tube. The second insertion tube and the first insertion tube are vertically slidably inserted and adapted.

[0020] A set of first straight pipes can input high-temperature airflow, which then enters the inner tank through the first and second insertion pipes. The partition can be made of heat-conducting material to heat the solid wood boards, thereby increasing the temperature of the solid wood boards and promoting the pressure shaping and drying of the solid wood boards.

[0021] Preferably, it further includes:

[0022] A sealing plate is installed on the top of the pressure-resistant box.

[0023] The second air pump is fixed to the top of the sealing plate;

[0024] The second connecting pipe connects the output end of the second air pump to the space below the sealing plate of the pressure-resistant box.

[0025] The sealing plate creates a sealed space inside the pressure-resistant chamber. At this time, the second air pump delivers airflow into the sealed space, creating a high-pressure environment inside the sealed space. This applies pressure to the liquid surface, increasing the applied pressure even when the liquid level is low, thus reducing the need for a large amount of liquid to apply pressure and minimizing liquid consumption.

[0026] Preferably, it further includes:

[0027] The first air pump is fixed to the top of the sealing plate, and the input end of the first air pump is connected to the high-temperature drying airflow of the external device.

[0028] The first connecting pipe is located between the output end of the first air pump and one of the first straight pipes;

[0029] The first air pump delivers high-temperature, dry airflow into the interior of the first straight pipe through the first connecting pipe, thereby driving the airflow.

[0030] Preferably, it further includes:

[0031] Multiple mounting boxes are respectively embedded and fixed in the middle of the second straight pipe, and the mounting boxes are located on the side of the partition facing the first straight pipe;

[0032] Multiple miniature drive fans are installed inside each of the aforementioned mounting boxes;

[0033] The mounting box provides a constant pressure environment for the installation of the miniature drive fan. After the miniature drive fan is started, it drives the airflow, which allows the airflow to pass evenly through each inner groove, thus ensuring that the processing environment for each solid wood board is the same.

[0034] Preferably, it further includes:

[0035] Multiple sets of moisture-absorbing boards, with two moisture-absorbing boards forming a group. The moisture-absorbing boards in the same group are located at the top and bottom of the solid wood board, and inside the waterproof sleeve.

[0036] The moisture-absorbing plate is designed to absorb moisture from the solid wood boards during the pressure setting and drying process, thereby accelerating the drying of the solid wood boards and preventing moisture from failing to be released during the pressure process, thus improving the processing, setting, and drying effect of the solid wood boards.

[0037] Preferably, it further includes:

[0038] Multiple sets of plugs, each set of plugs corresponding to one moisture-absorbing plate, and multiple plugs arranged in a linear array form a set, the plugs being fixed to the side wall of the moisture-absorbing plate;

[0039] Several insertion slots are respectively opened on the side wall of each of the partitions to connect the inner groove, and the insertion plug is inserted and adapted to the insertion slot;

[0040] Several through slots are respectively opened through the center of the plug;

[0041] Several extended membranes are respectively fitted over the outside of each of the plugs and are connected to the waterproof sleeve;

[0042] The plug is inserted into the inside of the insertion slot, thus forming a connection between the inner groove and the moisture-absorbing plate. This allows the high-temperature drying airflow to pass through the moisture-absorbing plate and remove moisture from the solid wood board, thereby improving the drying effect on the solid wood board. The plug and the extension film can seal the connection position and prevent high-pressure water from seeping into the inside of the inner groove and affecting the drying effect of the solid wood board.

[0043] Preferably, it further includes:

[0044] The U-shaped sleeve, which is shaped like an opening and has a U-shaped cross-section, is fitted onto the top edge of the pressure-resistant box to limit the edge of the sealing plate.

[0045] Two round holes symmetrically penetrate the U-shaped sleeve and form an insertion channel with the pressure-resistant box body;

[0046] Two straight rods are respectively inserted into the insertion channels formed by the two circular holes;

[0047] The straight rod is inserted into the inside of the round hole, which can quickly position the U-shaped sleeve. The U-shaped sleeve increases the contact area, thereby increasing the sealing effect and preventing the sealing effect of the sealing plate from being affected when high pressure is formed inside the pressure box.

[0048] Preferably, it further includes:

[0049] Multiple pressure sensors are respectively installed on the upper and lower sides of each of the partitions;

[0050] Pressure sensors can detect the pressure received by solid wood boards, allowing for real-time pressure monitoring and easy pressure adjustment.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] The pressure applied to the solid wood board can be adjusted by regulating the type and depth of the liquid being supplied. For example, water can be used as the liquid, and the water pressure can be evenly distributed on the surface of the solid wood board, thereby ensuring that the pressure applied to the solid wood board is evenly distributed and improving the anti-deformation treatment effect of the solid wood board. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0054] Figure 2 This is a schematic diagram of the overall cross-section of the present invention.

[0055] Figure 3 For the present invention Figure 2 A magnified structural diagram of point A in the middle.

[0056] Figure 4 For the present invention Figure 2 A magnified structural diagram at point B in the middle.

[0057] Figure 5 For the present invention Figure 4 A magnified structural diagram at point C.

[0058] In the diagram: 1. Pressure-resistant box; 101. Limiting platform; 102. Pressure plate; 103. Snap-fit ​​platform; 105. Waterproof sleeve; 104. Solid wood board; 2. Partition; 3. First straight pipe; 301. First insertion pipe; 302. Second insertion pipe; 303. Inner groove; 4. First air pump; 401. First connecting pipe; 5. Mounting box; 501. Miniature drive fan; 6. Moisture-absorbing plate; 7. Insert plug; 701. Through groove; 702. Extension membrane; 8. Second air pump; 801. Second connecting pipe; 802. Sealing plate; 9. U-shaped sleeve; 901. Round hole; 902. Straight rod. Detailed Implementation

[0059] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0060] like Figures 1 to 5 The device shown is a deformation prevention treatment device for solid wood boards after processing and forming, including a pressure-resistant box 1, and further including:

[0061] Multiple limiting platforms 101 are fixed in an array on the inner wall of the pressure-resistant box 1;

[0062] Pressure plate 102 is disposed inside pressure box 1, and the edge of pressure plate 102 is fixed with snap-fit ​​platform 103 adapted to limit platform 101;

[0063] Multiple friction pads are fixed to the opposite sides of the snap-fit ​​platform 103 and the limiting platform 101, respectively;

[0064] Multiple waterproof sleeves 105 are respectively fitted onto the outside of each solid wood board 104. The solid wood boards 104 are arranged in a vertical linear array inside the pressure-resistant box 1. When liquid is added inside the pressure-resistant box 1, the surface of the solid wood board 104 is uniformly squeezed under hydraulic pressure.

[0065] In the existing technology, when treating solid wood flooring after molding to prevent deformation, it is usually done by pressure shaping and drying. However, if the pressure is uneven when applying pressure to solid wood boards, it will cause the solid wood boards to deform during the drying process.

[0066] This embodiment of the invention can solve the above problems. The specific implementation method is as follows: When performing anti-deformation treatment on solid wood board 104, a waterproof sleeve 105 is placed on the outside of the solid wood board 104 to be treated. Then, the solid wood board 104 with the waterproof sleeve 105 is placed inside the pressure-resistant box 1 and vertically aligned and stacked. After stacking, the pressure plate 102 is snapped onto the limiting platform 101 through the snap-fit ​​platform 103 to limit the highest position of the solid wood board 104. Then, liquid is transported into the pressure-resistant box 1. Different liquid densities and liquid depths result in different pressures on the solid wood board 104. Thus, the pressure value on the solid wood board 104 is adjusted by adjusting the type and depth of the transported liquid. For example, water can be used as the liquid. Water pressure is evenly distributed on the surface of the solid wood board 104, so that the pressure applied to the solid wood board 104 is evenly distributed, thereby improving the anti-deformation treatment effect of the solid wood board 104.

[0067] As an optional embodiment, it also includes:

[0068] Multiple partitions 2 are respectively disposed between adjacent solid wood boards 104;

[0069] The partition 2 can separate the solid wood boards 104. The surface of the partition 2 is flat and has high hardness. When the partition 2 is placed between the solid wood boards 104, the contact surface is flat, which can be shaped during the anti-deformation treatment process to improve the anti-deformation treatment effect.

[0070] As an optional embodiment, it also includes:

[0071] Two sets of first straight pipes 3, two first straight pipes 3 as a group, are respectively set on both sides of the partition 2, and the top of both sets of first straight pipes 3 extends out after penetrating the top of the pressure-resistant box 1.

[0072] Multiple inner grooves 303 are respectively opened inside the partition 2;

[0073] Multiple second straight pipes are respectively fixedly connected to the side wall of partition 2;

[0074] Multiple sets of first insertion tubes 301, four first insertion tubes 301 as a group, are fixedly connected to the bottom of the second straight tube respectively, and the bottommost first insertion tube 301 is provided with a sealing plug inside;

[0075] Multiple sets of second insertion pipes 302, four second insertion pipes 302 as a group, are fixedly connected to the top of the second straight pipe respectively, and the topmost second insertion pipe 302 is connected to the first straight pipe 3. The second insertion pipe 302 and the first insertion pipe 301 are vertically slidably inserted and adapted.

[0076] A set of first straight pipes 3 can input high-temperature airflow, so that the airflow enters the inner groove 303 through the first insertion pipe 301 and the second insertion pipe 302. The partition 2 can be set as a heat-conducting material to heat the solid wood board 104, thereby increasing the temperature of the solid wood board 104 and promoting the pressure shaping and drying of the solid wood board 104.

[0077] As an optional embodiment, it also includes:

[0078] Sealing plate 802 is installed on the top of the pressure-resistant box 1;

[0079] The second air pump 8 is fixed to the top of the sealing plate 802;

[0080] The second connecting pipe 801 is connected to the output end of the second air pump 8 and the space of the pressure-resistant box 1 located below the sealing plate 802;

[0081] The sealing plate 802 creates a sealed space inside the pressure-resistant box 1. At this time, the second air pump 8 delivers airflow into the sealed space, creating a high-pressure environment inside the sealed space, thereby applying pressure to the liquid surface. This allows the applied pressure to be increased even when the liquid surface depth is low, thus reducing the need for a large amount of liquid to apply pressure and reducing liquid consumption.

[0082] As an optional embodiment, it also includes:

[0083] The first air pump 4 is fixed to the top of the sealing plate 802, and the input end of the first air pump 4 is connected to the high-temperature drying airflow of the external device.

[0084] The first connecting pipe 401 connects the output end of the first air pump 4 to one of the first straight pipes 3.

[0085] The first air pump 4 delivers high-temperature dry airflow into the interior of the first straight pipe 3 through the first connecting pipe 401, thereby driving the flow of airflow.

[0086] As an optional embodiment, it also includes:

[0087] Multiple mounting boxes 5 are respectively embedded and fixed in the middle of the second straight pipe, and the mounting boxes 5 are located on the side of the partition 2 facing the first straight pipe 3;

[0088] Multiple miniature drive fans 501 are installed inside each mounting box 5;

[0089] The mounting box 5 provides a constant pressure environment for the installation of the miniature drive fan 501. After the miniature drive fan 501 is started, it drives the airflow, so that the airflow can pass evenly through each inner groove 303, thus making the processing environment of each solid wood board 104 the same.

[0090] As an optional embodiment, it also includes:

[0091] Multiple sets of moisture-absorbing boards 6, with two moisture-absorbing boards 6 forming a group. The moisture-absorbing boards 6 in the same group are located at the top and bottom of the solid wood board 104, and inside the waterproof sleeve 105.

[0092] The moisture-absorbing plate 6 is designed so that the solid wood board 104 absorbs moisture during the pressure setting and drying process, thereby accelerating the drying of the solid wood board 104 and preventing moisture from failing to be released and dried during the pressure process, thus improving the processing, setting and drying effect of the solid wood board 104.

[0093] As an optional embodiment, it also includes:

[0094] Multiple sets of plugs 7, each set of plugs 7 corresponds to one moisture-absorbing plate 6, and multiple plugs 7 arranged in a linear array form a set. The plugs 7 are fixed to the side wall of the moisture-absorbing plate 6.

[0095] Several insertion slots are respectively opened on the side wall of each partition 2 to connect the inner groove 303, and the insertion plug 7 is inserted and matched with the insertion slot.

[0096] Several through slots 701 are respectively opened through the center of the plug 7;

[0097] Several extension membranes 702 are respectively fitted over the outside of each plug 7 and connected to the waterproof sleeve 105;

[0098] The plug 7 is inserted into the inside of the insertion groove, thereby forming a connection between the inner groove 303 and the moisture-absorbing plate 6. This allows the high-temperature drying airflow to pass through the moisture-absorbing plate 6 and remove moisture from the solid wood board 104, thereby improving the drying effect on the solid wood board 104. The plug 7 and the extension film 702 can seal the connection position and prevent high-pressure water from seeping into the inside of the inner groove 303 and affecting the drying effect of the solid wood board 104.

[0099] As an optional embodiment, it also includes:

[0100] The U-shaped sleeve 9 is designed in the shape of an opening and has a U-shaped cross section. It is fitted onto the top edge of the pressure-resistant box 1 to limit the edge of the sealing plate 802.

[0101] Two round holes 901 symmetrically penetrate the U-shaped sleeve 9 and form an insertion channel with the pressure-resistant box 1;

[0102] Two straight rods 902 are respectively inserted into the insertion channels formed by two round holes 901;

[0103] The straight rod 902 is inserted into the inside of the round hole 901, which can quickly position the U-shaped sleeve 9. The U-shaped sleeve 9 increases the contact area, thereby increasing the sealing effect, so as to avoid affecting the sealing effect of the sealing plate 802 when high pressure is formed inside the pressure box 1.

[0104] As an optional embodiment, it also includes:

[0105] Multiple pressure sensors are installed on the upper and lower sides of each partition 2, respectively;

[0106] The pressure sensor can detect the pressure received by the solid wood board 104, so as to facilitate pressure adjustment in real time.

[0107] The working principle of this invention is as follows: When performing anti-deformation treatment on solid wood board 104, a waterproof sleeve 105 is placed over the outside of the solid wood board 104 to be treated. Then, the solid wood board 104 with the waterproof sleeve 105 is placed inside the pressure-resistant box 1 and vertically aligned and stacked. After stacking, the pressure plate 102 is snapped onto the limiting platform 101 through the snap-fit ​​platform 103 to limit the highest position of the solid wood board 104. Then, liquid is transported into the pressure-resistant box 1. Different liquid densities and liquid depths result in different pressures on the solid wood board 104. Thus, the pressure value on the solid wood board 104 is adjusted by adjusting the type and depth of the transported liquid. For example, water can be used as the liquid. Water pressure is evenly distributed on the surface of the solid wood board 104, thereby making the pressure applied to the solid wood board 104 evenly distributed, so as to improve the anti-deformation treatment effect of the solid wood board 104.

[0108] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for preventing deformation of a solid wood board after processing and forming, comprising a compression-resistant box body (1), characterized in that, Also includes: Multiple limiting platforms (101) are fixed in an array on the inner wall of the pressure-resistant box (1); A pressure plate (102) is disposed inside the pressure-resistant box (1), and the edge of the pressure plate (102) is fixed with a snap-fit ​​platform (103) that is compatible with the limiting platform (101). Multiple friction pads are respectively fixed on the opposite sides of the snap-fit ​​platform (103) and the limiting platform (101); Multiple waterproof sleeves (105) are respectively fitted onto the outside of each solid wood board (104). The solid wood boards (104) are arranged in a vertical linear array inside the pressure-resistant box (1). When liquid is added inside the pressure-resistant box (1), the surface of the solid wood board (104) is uniformly squeezed under hydraulic pressure.

2. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 1, characterized in that, Also includes: Multiple partitions (2) are respectively placed between adjacent solid wood boards (104).

3. The device for preventing deformation of a processed and formed solid wood board according to claim 2, characterized in that, Also includes: Two sets of first straight pipes (3), two first straight pipes (3) are set as a group, respectively set on both sides of the partition (2), and the top of both sets of first straight pipes (3) extends out after penetrating the top of the pressure-resistant box (1); Multiple inner grooves (303) are respectively opened inside the partition (2); Multiple second straight pipes are respectively fixedly connected to the side wall of the partition (2); Multiple sets of first insertion tubes (301), four first insertion tubes (301) form a group, and are respectively fixedly connected to the bottom of the second straight tube. The bottommost first insertion tube (301) is provided with a sealing plug inside. Multiple sets of second insertion pipes (302), four second insertion pipes (302) are in a group, and are respectively fixedly connected to the top of the second straight pipe. The topmost second insertion pipe (302) is connected to the first straight pipe (3). The second insertion pipe (302) and the first insertion pipe (301) are vertically slidably inserted and adapted.

4. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 3, characterized in that, Also includes: A sealing plate (802) is installed on the top of the pressure-resistant box (1); The second air pump (8) is fixed to the top of the sealing plate (802); The second connecting pipe (801) is connected to the output end of the second air pump (8) and the space below the sealing plate (802) of the pressure-resistant box (1).

5. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 4, characterized in that, Also includes: The first air pump (4) is fixed to the top of the sealing plate (802), and the input end of the first air pump (4) is connected to the high-temperature drying airflow of the external device. The first connecting pipe (401) is located between the output end of the first air pump (4) and one of the first straight pipes (3).

6. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 3, characterized in that, Also includes: Multiple mounting boxes (5) are respectively embedded and fixed in the middle of the second straight pipe, and the mounting boxes (5) are located on the side of the partition (2) facing the first straight pipe (3); Multiple miniature drive fans (501) are installed inside each of the aforementioned mounting boxes (5).

7. The device for preventing deformation of a processed and formed solid wood board according to claim 6, wherein Also includes: Multiple sets of moisture-absorbing boards (6), two of the moisture-absorbing boards (6) form a group, and the moisture-absorbing boards (6) in the same group are located at the top and bottom of the solid wood board (104) and inside the waterproof sleeve (105).

8. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 7, characterized in that, Also includes: Multiple sets of plugs (7), one set of plugs (7) corresponds to one moisture-absorbing plate (6), and multiple plugs (7) arranged in a linear array form a set, and the plugs (7) are fixed on the side wall of the moisture-absorbing plate (6); Several insertion slots are respectively opened on the side wall of each of the partitions (2) to connect the inner groove (303), and the insertion plug (7) is inserted and adapted to the insertion slot; Several through slots (701) are respectively opened through the center of the plug (7); Several extension membranes (702) are respectively fitted over the outside of each of the plugs (7) and connected to the waterproof sleeve (105).

9. The anti-deformation treatment device for solid wood boards after processing and forming according to claim 5, characterized in that, Also includes: The U-shaped sleeve (9) is set in an open shape and has a U-shaped cross section. It is fitted onto the top edge of the pressure-resistant box (1) to limit the edge of the sealing plate (802). Two round holes (901) symmetrically penetrate the U-shaped sleeve (9) and form an insertion channel with the pressure-resistant box (1); Two straight rods (902) are respectively inserted into the insertion channels formed by the two circular holes (901).

10. A device for preventing deformation after solid wood board processing and forming according to claim 2, characterized in that, Also includes: Multiple pressure sensors are installed on the upper and lower sides of each of the partitions (2).

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