A dehydration device for a sound-absorbing panel production forming section

Abstract

The utility model relates to dehydration device technical field, and disclose a kind of sound-absorbing board production forming section dehydration device, and realize secondary extrusion dehydration by setting extrusion dehydration device, extrusion structure, suction structure etc., sound-absorbing board is extruded first, and sound-absorbing board is preliminarily extruded by upper roller and lower roller, and free water of board surface layer is extruded surface, and water of board extrusion is sucked by negative pressure inside water-collecting cavity, and it is evenly entered into water-collecting cavity inside by mesh surface, after sound-absorbing board is sucked and rebounded by back tent device, reach the inside of extrusion dehydration device of auxiliary frame A side, again extruded between upper roller and lower roller, and board is compacted to target thickness, simultaneously, water that moves out from core portion when rebounding is fluffy extruded, make negative pressure inside water-collecting cavity through mesh and promptly suck extruded water, wherein containing surface layer and core portion residual free water, and make water distribution even in sound-absorbing board interior, and it has the effect of uniform dehydration.

Description

Technical Field

[0001] This utility model relates to the field of dehydration device technology, and in particular to a dehydration device for the forming section of a sound-absorbing panel production process. Background Technology

[0002] Mineral wool sound-absorbing boards are made from blast furnace slag wool as the main raw material, starch as the main binder, and appropriate auxiliary agents and additives to form a slurry. After molding, drying, cutting, planing, and base coating, the raw material of the mineral wool sound-absorbing board is made. At present, the main equipment for molding mineral wool sound-absorbing boards is the long net molding machine. During its production process, the slurry moisture is too high, so it needs to be dehydrated. At this time, a dehydration device is used.

[0003] In existing technologies, traditional dehydration devices use a vacuum pump to draw moisture from the sound-absorbing panel in one direction only. This can only reduce the moisture content of the sound-absorbing panel in a linear manner and cannot distribute the remaining moisture inside evenly. This results in water accumulation at the bottom and moisture being locked in the core, leading to inconsistent shrinkage after drying and warping of the panel. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dehydration device for the forming section of sound-absorbing panel production, which has the advantages of uniform dehydration and improved panel quality, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a dehydration device for the forming section of a sound-absorbing panel production, including a main frame, a secondary frame A fixedly connected to one side of the main frame, a secondary frame B fixedly connected to the other side of the main frame, an intermediate frame located at the same horizontal plane as the secondary frames A and B in the middle of the main frame, a squeezing dehydration device installed between the secondary frames A and B and the intermediate frame, the squeezing dehydration device including a squeezing structure and a suction structure, and a return condensation device fixedly installed inside the main frame above the intermediate frame.

[0006] With the above structural setup, the sound-absorbing board is dehydrated sequentially by the extrusion dehydration device and the recirculation device, achieving high dehydration efficiency and uniform local moisture content. The upper and lower rollers extrude free water from the bottom and surface of the board, which is then promptly removed by the vacuum in the lower water collection chamber to prevent moisture from seeping back into the core. The vacuum suction in the upper vacuum hood slightly fluffs the board, breaking the dense structure between the fibers and guiding the moisture in the core to migrate upwards, thus achieving uniform moisture distribution inside the board.

[0007] Preferably, the extrusion structure includes a water-absorbing block, which is fixedly installed between the sub-frame A, sub-frame B and the intermediate frame. The water-absorbing block has a water collection cavity inside. The extrusion dewatering device has a lower roller rotatably installed inside. The top surface of the extrusion dewatering device is provided with mesh plates on both sides of the lower roller.

[0008] With the above structural design, the free water on the surface of the board (especially the bottom) is squeezed to the surface to form a water film, which enters the water collection cavity through the mesh plate, thus achieving the effect of pressing the thickness while squeezing out the water inside.

[0009] Preferably, the lower roller is a steel roller, an upper fixing block is provided above the water-absorbing block, an upper roller is rotatably installed inside the upper fixing block, the upper roller is a rubber roller, the upper roller and the lower roller are arranged in symmetrical positions, and the roller spacing between the upper roller and the lower roller on the side of the sub-frame A is smaller than the roller spacing between the upper roller and the lower roller on the side of the sub-frame B.

[0010] Through the above structural design, the initial squeezing dehydration promptly removes the free water at the bottom, preventing sedimentation from the source. The final squeezing dehydration targets the water that has migrated to the surface, deeply expelling it and achieving uniform moisture distribution from the surface to the core to the bottom.

[0011] Preferably, the suction structure includes a vacuum pump A and a water tank A. A suction pipe is fixedly connected between the inlet of the vacuum pump A and the inside of the water collection chamber, and an outlet pipe is fixedly connected between the outlet of the vacuum pump A and the water tank A.

[0012] Preferably, the recirculation device includes a fixed plate, a vacuum cover is fixedly installed at the bottom of the fixed plate, a suction plate is fixedly installed at the bottom of the vacuum cover, and an auxiliary roller is symmetrically rotated inside the suction plate, with the lowest point of the outer surface of the auxiliary roller being lower than the surface of the suction plate.

[0013] With the above structural setup, the vacuum suction of the vacuum hood makes the board slightly fluffy, breaking the dense structure between the fibers, guiding the moisture in the core to migrate upward and generating an upward airflow, which in turn drives the moisture in the core to migrate to the surface (similar to the "transpiration effect").

[0014] Preferably, a vacuum pump B is fixedly installed on the top of the fixed plate, the inlet of the vacuum pump B is connected to the vacuum hood, the return device is provided with a water tank B below the intermediate frame, and a water collection pipe is fixedly connected between the outlet of the vacuum pump B and the water tank B.

[0015] Through the above structural design, the low negative pressure suction makes the mineral wool fibers slightly fluffy, the pores between the fibers expand, and the bound water in the core migrates to the surface under capillary action, making the moisture distribution more uniform.

[0016] This utility model has the following advantages:

[0017] 1. The dehydration device in the forming section of this sound-absorbing panel production achieves secondary extrusion dehydration through a combination of extrusion dehydration device, extrusion structure, and suction structure. After the initial extrusion dehydration, the sound-absorbing panel is initially extruded by the upper and lower rollers, causing the free water on the surface of the panel, especially at the bottom, to be squeezed out. The squeezed water is then drawn into the water collection chamber by the negative pressure inside the water collection chamber, passing through the mesh surface and entering the water collection chamber evenly. After being drawn back by the rebound device, the sound-absorbing panel reaches the extrusion dehydration device on the side of the sub-frame A, where it is squeezed again by the upper and lower rollers to compact the panel to the target thickness. At the same time, the water that migrated from the core during the rebound is squeezed out, creating negative pressure inside the water collection chamber. The mesh promptly draws out the water squeezed out between the upper and lower rollers, including the remaining free water on the surface and in the core, ensuring a uniform distribution of moisture inside the sound-absorbing panel and achieving a uniform dehydration effect.

[0018] 2. The dehydration device in the forming section of the sound-absorbing panel production process achieves core moisture migration and uniform moisture distribution by setting up a return device, vacuum hood, and suction plate. The moisture is then transported to the surface of the intermediate frame. When vacuum pump B is started, a low negative pressure is generated inside the vacuum hood, causing the upper surface of the sound-absorbing panel to be adsorbed and adhered to the surface of the suction plate. When adsorbed by the vacuum hood, the mineral wool fibers are slightly fluffed, the thickness rebounds, and the pores between the fibers expand. The bound water in the core of the sound-absorbing panel migrates to the upper and lower surfaces under capillary action, making the moisture distribution inside the sound-absorbing panel tend to be uniform. At the same time, the sound-absorbing panel slides on the surface of the auxiliary roller to avoid excessive suction that could cause fiber breakage, thus achieving the effect of uniform moisture distribution. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the extrusion dehydration device of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the retractable device of this utility model.

[0023] In the diagram: 1. Main frame; 11. Sub-frame A; 12. Sub-frame B; 13. Intermediate frame; 2. Extrusion dewatering device; 21. Suction block; 22. Water collection chamber; 23. Lower roller; 24. Mesh plate; 25. Vacuum pump A; 26. Water tank A; 27. Suction pipe; 28. Output pipe; 29. ​​Upper fixing block; 210. Upper roller; 3. Return device; 31. Fixing plate; 32. Vacuum hood; 33. Suction plate; 34. Auxiliary roller; 35. Vacuum pump B; 36. Water tank B; 37. Water collection pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-2 A dehydration device for a sound-absorbing panel production molding section includes a main frame 1. A secondary frame A11 is fixedly connected to one side of the main frame 1, and a secondary frame B12 is fixedly connected to the other side of the main frame 1. An intermediate frame 13 is provided in the middle of the main frame 1, on the same horizontal plane as the secondary frames A11 and B12. A squeezing dehydration device 2 is installed between the secondary frames A11 and B12 and the intermediate frame 13. The squeezing dehydration device 2 includes a squeezing structure and a suction structure. A return device 3 is fixedly installed inside the main frame 1 above the intermediate frame 13.

[0026] In practical application, this device uses a squeezing dehydration device 2 and a return device 3 to sequentially dehydrate the sound-absorbing panel, achieving high dehydration efficiency and uniform local moisture content. The sound-absorbing panel is first squeezed between the upper roller 210 and the lower roller 23 on one side of the sub-frame B12, causing the free water on the surface of the sound-absorbing panel, especially at the bottom, to be squeezed to the surface and form a water film. Then, by starting the vacuum pump A25, the vacuum pump A25 sucks the air and moisture inside the water collection chamber 22 through the suction pipe 27, so that the surface squeezed out between the upper roller 210 and the lower roller 23 enters the water collection chamber 22 through the mesh plate 24 and is sucked away by the vacuum pump A25. This device focuses on sucking away the surface water squeezed out between the upper roller 210 and the lower roller 23, rather than forcibly sucking the water inside the sound-absorbing panel. It promptly sucks away the squeezed-out free water to avoid water accumulation on the sound-absorbing panel.

[0027] After the initial squeezing and suction by the extrusion and dehydration device 2 on the side of the sub-frame B12, it is transported to the top of the intermediate frame 13. The vacuum pump B35 works to generate a low negative pressure inside the vacuum hood 32, causing the upper surface of the sound-absorbing board to be adsorbed by the suction plate 33. After the sound-absorbing board is lowered by gravity and adsorbed by the upper layer, the pores between the fibers expand, making the sound-absorbing board fibers slightly fluffy and the thickness slightly elastic. The bound water in the core of the sound-absorbing board migrates to the surface under capillary action, avoiding the core moisture lock-in in the traditional process.

[0028] Subsequently, the sound-absorbing board is squeezed and sucked again by the extrusion and dehydration device 2 on the side of the sub-frame A11, so that the sound-absorbing board reaches the target thickness during the extrusion process. At the same time, the water that migrated to the surface during the rebound and fluffing is squeezed out to form a continuous water film. After being sucked by the vacuum pump A25, the residual free water on the surface and in the core is sucked away, reducing the moisture content of the sound-absorbing board. The moisture is evenly distributed inside, reducing the time required for subsequent drying processes and reducing the warping rate of the board.

[0029] Please see Figures 1-3 The extrusion structure includes a water-absorbing block 21, which is fixedly installed between the sub-frame A11, the sub-frame B12 and the intermediate frame 13. A water-collecting cavity 22 is opened inside the water-absorbing block 21. A lower roller 23 is rotatably installed inside the extrusion dewatering device 2. A screen plate 24 is provided on both sides of the lower roller 23 on the top surface of the extrusion dewatering device 2.

[0030] Please see Figures 1-3 The lower roller 23 is a steel roller, and an upper fixing block 29 is provided above the water absorption block 21. An upper roller 210 is rotatably installed inside the upper fixing block 29. The upper roller 210 is a rubber roller. The upper roller 210 and the lower roller 23 are arranged symmetrically. The roller gap between the upper roller 210 and the lower roller 23 on the side of the sub-frame A11 is 15mm and the pressure is 0.3Mpa. The roller gap between the upper roller 210 and the lower roller 23 on the side of the sub-frame B12 is 18mm and the pressure is 0.15Mpa. The roller gap between the upper roller 210 and the lower roller 23 on the side of the sub-frame A11 is smaller than the roller gap between the upper roller 210 and the lower roller 23 on the side of the sub-frame B12.

[0031] The sound-absorbing plate is squeezed by the lower roller 23 and the upper roller 210 during operation, so that the free water on the surface of the plate, especially at the bottom, is squeezed to the surface and enters the water collection cavity 22 through the mesh plate 24, thereby achieving the pressing of thickness while squeezing out the water inside.

[0032] Please see Figures 1-3 The suction structure includes a vacuum pump A25 and a water tank A26. A suction pipe 27 is fixedly connected between the inlet of the vacuum pump A25 and the inside of the water collection chamber 22. An outlet pipe 28 is fixedly connected between the outlet of the vacuum pump A25 and the water tank A26. The vacuum pump A25 is connected to the water collection chamber 22 through the suction pipe 27 and to the water tank A26 through the outlet pipe 28.

[0033] Subsequently, after the vacuum pump A25 is started, the water collection chamber 22 is sucked out, so that the squeezed water is drawn away through the mesh plate 24, and the squeezed free water is removed in time, reducing the moisture content and preventing water from accumulating at the bottom of the plate.

[0034] Please see Figures 1-4The return device 3 includes a fixed plate 31, a vacuum cover 32 is fixedly installed at the bottom of the fixed plate 31, a suction plate 33 is fixedly installed at the bottom of the vacuum cover 32, and an auxiliary roller 34 is symmetrically rotated inside the suction plate 33. The lowest point of the outer surface of the auxiliary roller 34 is lower than the surface of the suction plate 33.

[0035] In actual operation, due to the negative pressure inside the vacuum hood 32, the board is adsorbed onto the surface of the suction plate 33. Since the board moves continuously on the surfaces of the sub-frames A11, B12 and the intermediate frame 13, the auxiliary roller 34 facilitates the smooth sliding of the board when it is adsorbed, avoiding excessive suction that could cause the internal fibers of the board to break.

[0036] Please see Figures 1-4 A vacuum pump B35 is fixedly installed on the top of the fixed plate 31. The inlet of the vacuum pump B35 is connected to the vacuum hood 32. The return device 3 is located below the intermediate frame 13 and has a water tank B36. A water collection pipe 37 is fixedly connected between the outlet of the vacuum pump B35 and the water tank B36.

[0037] When vacuum pump B35 draws air into the vacuum chamber 32, it creates a low negative pressure inside the chamber, causing the mineral wool fibers to become slightly fluffy. This allows the thickness of the board to rebound after compression, expanding the pores between the fibers inside the board. The bound water in the core of the board migrates to the surface under capillary action, preventing the bound water in the core from being locked in. At the same time, the moisture distribution gradually becomes more uniform after being drawn in by the vacuum chamber 32, reducing the moisture content difference between the top and bottom. This mainly involves the migration of moisture from the core to the surface, preparing for subsequent deep compression and dehydration.

[0038] Working principle: In use, the formed wet board is first placed naturally to drain the surface water by gravity, avoiding excessive water overflow in the extrusion section. After draining, it is placed on the surface of the sub-frame B12 for continuous conveying. When the sound-absorbing board is conveyed to the extrusion and dehydration device 2 on one side of the sub-frame B12, the upper roller 210 and the lower roller 23 perform preliminary extrusion on the sound-absorbing board, so that the free water on the surface of the board, especially at the bottom, is squeezed out to form a water film at the bottom of the board. When the vacuum pump A25 is working, it draws air and water into the water collection chamber 22 through the suction pipe 27, so that the water collection chamber 22 is generated with negative pressure. The water squeezed out of the board is drawn into the water collection chamber 22 through the negative pressure in the water collection chamber 22 and evenly enters the water collection chamber 22 through the surface of the mesh plate 24, timely removing the squeezed free water, reducing the moisture content inside the sound-absorbing board and preventing water from accumulating at the bottom.

[0039] The material is then conveyed to the surface of the intermediate frame 13. The vacuum pump B35 is started to generate a low negative pressure inside the vacuum hood 32, causing the upper surface of the sound-absorbing plate to be adsorbed and adhered to the surface of the suction plate 33. When adsorbed by the vacuum hood 32, the mineral wool fibers become slightly fluffy and their thickness rebounds. The pores between the fibers expand, and the bound water in the core of the sound-absorbing plate migrates to the upper and lower surfaces under capillary action, making the moisture distribution inside the sound-absorbing plate more uniform. At the same time, the sound-absorbing plate slides on the surface of the auxiliary roller 34 to avoid excessive suction that could cause fiber breakage.

[0040] After the sound-absorbing panel is sucked and rebounded by the rebound device 3, it reaches the interior of the extrusion and dehydration device 2 on the side of the sub-frame A11. It is squeezed again between the upper roller 210 and the lower roller 23 to compact the panel to the target thickness. At the same time, the water that migrated from the core during the rebound is squeezed out, so that it forms a continuous water film on the surface. When the vacuum pump A25 is working, it sucks the air inside the water collection chamber 22 through the suction pipe 27, so that the water collection chamber 22 generates negative pressure and the mesh plate 24 promptly sucks out the water squeezed out between the upper roller 210 and the lower roller 23, which includes the free water remaining on the surface and in the core, and makes the water distribution inside the sound-absorbing panel uniform.

Claims

1. A dehydration device for a sound-absorbing panel production molding section, comprising a main frame (1), characterized in that: A secondary frame A (11) is fixedly connected to one side of the main frame (1), and a secondary frame B (12) is fixedly connected to the other side of the main frame (1). An intermediate frame (13) is provided in the middle of the main frame (1) and on the same horizontal plane as the secondary frames A (11) and B (12). A squeezing and dehydrating device (2) is installed between the secondary frames A (11), B (12) and the intermediate frame (13). The squeezing and dehydrating device (2) includes a squeezing structure and a suction structure. A return device (3) is fixedly installed inside the main frame (1) above the intermediate frame (13).

2. The dehydration device for the forming section of a sound-absorbing panel production process according to claim 1, characterized in that: The extrusion structure includes a water-absorbing block (21), which is fixedly installed between the sub-frame A (11), the sub-frame B (12) and the intermediate frame (13). A water-collecting cavity (22) is opened inside the water-absorbing block (21). A lower roller (23) is rotatably installed inside the extrusion dewatering device (2). A mesh plate (24) is provided on both sides of the lower roller (23) on the top surface of the extrusion dewatering device (2).

3. The dehydration device for the forming section of a sound-absorbing panel production line according to claim 2, characterized in that: The lower roller (23) is a steel rod, and an upper fixing block (29) is provided above the water-absorbing block (21). An upper roller (210) is rotatably installed inside the upper fixing block (29). The upper roller (210) is a rubber roller. The upper roller (210) and the lower roller (23) are arranged in symmetrical positions. The roller spacing between the upper roller (210) and the lower roller (23) on the side of the sub-frame A (11) is smaller than the roller spacing between the upper roller (210) and the lower roller (23) on the side of the sub-frame B (12).

4. The dehydration device for the forming section of a sound-absorbing panel production line according to claim 3, characterized in that: The suction structure includes a vacuum pump A (25) and a water tank A (26). A suction pipe (27) is fixedly connected between the inlet of the vacuum pump A (25) and the inside of the water collection chamber (22). An outlet pipe (28) is fixedly connected between the outlet of the vacuum pump A (25) and the water tank A (26).

5. The dehydration device for the forming section of a sound-absorbing panel production line according to claim 4, characterized in that: The return device (3) includes a fixed plate (31), a vacuum cover (32) is fixedly installed at the bottom of the fixed plate (31), a suction plate (33) is fixedly installed at the bottom of the vacuum cover (32), an auxiliary roller (34) is symmetrically rotated inside the suction plate (33), and the lowest point of the outer surface of the auxiliary roller (34) is lower than the surface of the suction plate (33).

6. The dehydration device for the forming section of a sound-absorbing panel production line according to claim 5, characterized in that: A vacuum pump B (35) is fixedly installed on the top of the fixed plate (31). The inlet of the vacuum pump B (35) is connected to the vacuum hood (32). The return device (3) is located below the intermediate frame (13) and has a water tank B (36). A water collection pipe (37) is fixedly connected between the outlet of the vacuum pump B (35) and the water tank B (36).

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