Nonwoven fabric high-efficiency cleaning device

Abstract

The application provides a non-woven fabric efficient cleaning device, and relates to the technical field of fabric cleaning devices.The device comprises a rack, a pay-off roller rotatably arranged on one side of the rack, and a cloth roll arranged on the pay-off roller; a cleaning mechanism, a dehydration mechanism and a drying mechanism are sequentially arranged on the rack along the cloth running direction; the cleaning mechanism comprises a cleaning box and a plurality of spray assemblies fixedly arranged in the cleaning box; the spray assembly comprises an upper spray pipe, and a plurality of nozzles are communicatively arranged at the bottom of the upper spray pipe; the dehydration mechanism comprises at least one set of extrusion roller groups; each extrusion roller group comprises oppositely arranged upper and lower pressing rollers, and an extrusion gap for the cloth to pass through is arranged between the upper and lower pressing rollers; the drying mechanism comprises a drying box and a plurality of hot air outlets fixedly arranged in the drying box; the hot air outlets are connected with an external hot air source; and an air outlet pipe is communicatively arranged at the top of the drying box; the device solves the problems of poor cleaning uniformity, high labor intensity of workers and low overall production efficiency of the existing device.

Description

Technical Field

[0001] This invention relates to the field of fabric cleaning devices, and more particularly to a high-efficiency cleaning device for nonwoven fabrics. Background Technology

[0002] Nonwoven fabric, also known as non-woven cloth, is a cloth-like material made by directly binding fibers through mechanical or chemical means without spinning or weaving. Due to its loose fiber structure and large specific surface area, it is easy to absorb dust, oil stains or grow mold during use and storage. Therefore, it needs to be cleaned and treated in a special way to restore its cleanliness and performance.

[0003] Existing nonwoven fabric cleaning devices mostly adopt an immersion cleaning structure, such as the "A Nonwoven Fabric Cleaning Equipment" proposed in Chinese Utility Model No. CN219930462U, or the "A Cleaning Device for Nonwoven Fabric Processing" proposed in CN223620643U. Both involve stacking the nonwoven fabric in a cleaning container equipped with a stirring component, using a stirring rod or impeller to agitate the liquid and promote stain removal. However, this immersion and agitation method has significant shortcomings in practical use: because the nonwoven fabric is stacked or rolled up in the container, the fabric layers are tightly adhered, making agitation difficult. The liquid flow generated by the movement cannot effectively penetrate into the fabric, resulting in insufficient liquid exchange in the central area of ​​the stack. Stains and detergents tend to remain between the fabric layers, leading to poor cleaning uniformity. For some skin-contact products, this further affects their safety and quality. At the same time, the entire cleaning process requires multiple intermittent operations such as liquid injection, cleaning, draining, lifting, and drying to be completed sequentially in the same container. Some of these steps rely on manual operation and cannot be effectively connected with other processes. This not only increases the labor intensity of workers but also seriously restricts the overall production efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-efficiency cleaning device for nonwoven fabrics, which solves the problems of poor cleaning uniformity, high labor intensity for workers, and low overall production efficiency of existing devices.

[0005] According to an embodiment of the present invention, a high-efficiency cleaning device for nonwoven fabric includes a frame, an unwinding roller rotatably disposed on one side of the frame, a fabric roll sleeved on the unwinding roller, and a plurality of power roller groups capable of driving the fabric to move on the frame. A cleaning mechanism, a dewatering mechanism and a drying mechanism are also sequentially disposed on the frame along the fabric traveling direction.

[0006] The cleaning mechanism includes a cleaning tank and several spray components fixedly installed inside the cleaning tank. The spray components include an upper spray pipe, and several nozzles are connected to the bottom of the upper spray pipe.

[0007] The dewatering mechanism includes at least one set of extrusion rollers, each set of extrusion rollers including an upper pressure roller and a lower pressure roller arranged opposite to each other, and an extrusion gap is provided between the upper pressure roller and the lower pressure roller for the fabric to pass through;

[0008] The drying mechanism includes a drying chamber and several hot air vents fixed inside the drying chamber. The hot air vents are connected to an external hot air source, and an air outlet pipe is connected to the top of the drying chamber.

[0009] The technical principle of this invention is as follows: In use, the roll of non-woven fabric to be cleaned is placed on the unwinding roller. The front end of the fabric passes through each power roller group in sequence and is then pulled to the winding end. The power roller group drives the fabric to move continuously along the direction of travel at a constant speed. The fabric first enters the cleaning mechanism. The upper spray pipe of the spray assembly sprays the washing liquid vertically onto the upper surface of the fabric through the nozzle, forming a penetrating spray, so that the washing liquid fully wets the fibers and removes the stains. Then the fabric enters the dewatering mechanism. The upper and lower pressure rollers, which are arranged opposite each other, apply a squeezing force to the fabric, squeezing out the washing liquid and stains adsorbed inside the fabric. After dewatering, the fabric enters the drying mechanism. An external hot air source delivers hot air to several hot air vents in the drying chamber. The hot air blows from the hot air vents onto the surface of the fabric and passes through the fiber layer. The humid and hot air carrying moisture is discharged from the air outlet pipe at the top of the drying chamber, so that the fabric dries quickly.

[0010] Furthermore, the cleaning assembly includes several rollers rotatably mounted on the lower inner wall of the cleaning tank. The rollers are arranged in parallel along the fabric travel direction. The cleaning tank is provided with a lower spray pipe between adjacent rollers, and several nozzles are provided at the top of the lower spray pipe.

[0011] Furthermore, a liquid receiving tank is provided at the bottom of the cleaning tank. The liquid receiving tank is connected to a filter and a circulation pump through a circulation pipeline. The liquid outlet of the circulation pump is connected to the upper spray pipe and the lower spray pipe.

[0012] Furthermore, the bottom of the liquid receiving tank is provided with an inclined liquid guiding wall, and a heating element is fixedly installed on the liquid guiding wall.

[0013] Furthermore, the upper pressure roller and the lower pressure roller are respectively rotatably mounted on the mounting frame. The mounting frame is U-shaped. The lower pressure roller is rotatably mounted on the open side of the mounting frame, and the upper pressure roller is slidably mounted on the closed side of the mounting frame. A cylinder that can drive the upper pressure roller to slide is fixedly mounted on the outer wall of the mounting frame.

[0014] Furthermore, the surface of the lower pressure roller is covered with an elastic material, and a dewatering motor capable of driving the lower pressure roller to rotate is fixedly installed on one side of the mounting frame.

[0015] Furthermore, at least one of the extrusion roller groups is fixedly provided with a rinsing box on its upstream side. The rinsing box is located above the fabric travel path, and is connected to a clean water source and has several spray nozzles at its bottom.

[0016] Furthermore, the dehydration mechanism also includes a vacuum chamber, which is located upstream of the drying chamber. The vacuum chamber is connected to an external vacuum pump and a gas-liquid separation tank. A vacuum suction port is provided on the top of the vacuum chamber, facing the fabric travel path.

[0017] Furthermore, the drying chamber is also equipped with several water-absorbing roller groups, each of which includes an upper suction roller and a lower suction roller arranged opposite each other, and the roller surfaces of the upper suction roller and the lower suction roller are covered with water-absorbing material.

[0018] Furthermore, the hot air outlet includes a first air outlet and a second air outlet. The first air outlet is located between two adjacent lower suction rollers and faces the fabric travel path, while the second air outlet is located at the bottom or side of the lower suction roller and faces the lower suction roller.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting up spray components, extrusion roller groups and hot air outlets arranged sequentially along the fabric's travel direction, the nonwoven fabric can sequentially complete penetrating spray cleaning, mechanical extrusion dehydration and hot air drying during continuous movement, forming a continuous operation process that requires no manual intervention, significantly reducing the labor intensity of workers and improving overall production efficiency.

[0021] 2. By setting up spray pipes and nozzles, the washing liquid is sprayed vertically onto the unfolded nonwoven fabric, allowing the liquid to penetrate directly into the fiber layer instead of just flowing on the surface of the fabric. Combined with the continuous movement of the fabric under the drive of the power roller group, this ensures that every area of ​​the fabric can receive sufficient and uniform liquid exchange, ensuring that the fabric layers are cleaned thoroughly.

[0022] 3. By setting at least one set of extrusion rollers, mechanical extrusion is applied to the fabric immediately after it has been sprayed and cleaned. This removes a large amount of liquid adsorbed inside the fibers before it enters the drying process, so that the drying mechanism only needs to deal with the small amount of residual moisture in the fabric. Combined with the hot air blown out of the hot air outlet penetrating the fabric fiber layer and then being actively discharged by the air outlet pipe, a good hot air circulation is formed, achieving efficient drying. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the assembly structure of the cleaning mechanism according to an embodiment of the present invention.

[0026] Figure 4 This is a cross-sectional structural diagram of the cleaning mechanism according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the assembly structure of the dehydration mechanism according to an embodiment of the present invention.

[0028] Figure 6 This is a cross-sectional structural diagram of the dehydration mechanism according to an embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the vacuum chamber structure according to an embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the assembly structure of the drying mechanism according to an embodiment of the present invention.

[0031] Figure 9 This is a cross-sectional structural diagram of the drying mechanism according to an embodiment of the present invention.

[0032] In the above attached diagram: 1. Unwinding roller; 11. Fabric roll; 12. Magnetic powder brake; 2. Power roller assembly; 21. Power roller; 22. Driven roller; 23. Power motor; 3. Cleaning mechanism; 31. Cleaning tank; 311. Cleaning inlet pipe; 312. Cleaning outlet pipe; 32. Upper spray pipe; 33. Nozzle; 34. Support roller; 35. Lower spray pipe; 36. Liquid receiving tank; 361. Liquid guide wall; 362. Heating element; 37. Circulation pipeline; 38. Circulation pump; 39. Filter; 4. Dewatering mechanism; 41. Upper pressure roller; 42. Lower pressure roller. 43. Roller; 431. Mounting frame; 432. Cylinder; 433. Slide groove; 433. Guide rod; 44. Dehydration motor; 45. Slider; 46. Baffle; 47. Slide frame; 48. Water collection tank; 5. Drying mechanism; 51. Drying box; 511. Air collection hood; 512. Air outlet pipe; 52. Hot air outlet; 521. First air outlet; 522. Second air outlet; 53. Lower suction roller; 54. Upper suction roller; 6. Rinse box; 61. Clean water pipe; 62. Spray nozzle; 63. Water baffle; 7. Vacuum box; 71. Vacuum suction port; 72. Connecting pipe. Detailed Implementation

[0033] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] like Figure 1-9As shown in the figure, this invention provides a high-efficiency cleaning device for nonwoven fabrics, which includes a frame extending horizontally. A roll-up roller 1 is rotatably mounted on one side of the frame. A roll 11 of nonwoven fabric to be cleaned is fitted onto the roll-up roller 1. A magnetic powder brake 12 is fixedly mounted on one side of the roll-up roller 1. The magnetic powder brake 12 is connected to the end of the roll-up roller 1 via a gear set. The magnetic powder brake 12 applies an adjustable damping torque to the roll-up roller 1 to control the fabric to maintain a constant tension during unwinding. The frame also has several sets of power rollers 2 that can drive the fabric to move. Each set of power rollers 2 includes a power roller 21 and a driven roller 22 arranged opposite each other, with a material passage gap between them for the fabric to pass through. The frame side is fixedly mounted with a magnetic powder brake 12. A power motor 23 is provided, and the output end of the power motor 23 is coaxially and fixedly connected to the power roller 21 to drive the power roller 21 to rotate, thereby driving the fabric to move at a uniform speed by relying on friction. Each power roller group 2 is distributed at intervals along the direction of travel. The specific number and position of each power roller group can be flexibly set according to the actual situation and are not limited here, but it must be ensured that the fabric remains flat and taut during the travel. Several guide rollers should also be set at intervals on the frame according to the fabric travel. The guide rollers can be rotatably set on the bottom or side of the frame and are used to turn or support the fabric. The specific structure and connection relationship involved in this part are all mature existing technologies in the field. Those skilled in the art can obtain and implement them without creative effort, and will not be described in detail here.

[0035] In this exemplary embodiment, the frame is further provided with a washing mechanism 3, a dehydration mechanism 4, and a drying mechanism 5 in sequence along the fabric travel direction, wherein:

[0036] The cleaning mechanism 3 includes a cleaning tank 31, which is fixedly mounted on a frame. The cleaning tank 31 has two opposing side walls, and corresponding material inlets are opened on the side walls. The material inlets pass through the side walls of the cleaning tank 31 to allow the fabric to pass through horizontally. Several sets of spraying components are fixedly arranged inside the cleaning tank 31 along the fabric's travel direction. Each spraying component includes an upper spray pipe 32, which is horizontally fixed to the upper inner wall of the cleaning tank 31. Its length direction is perpendicular to the fabric's travel direction, and the length of the upper spray pipe 32 is not less than the width of the fabric. Multiple nozzles 33 are spaced apart at the bottom of the upper spray pipe 32 along its length direction. The outlet of each nozzle 33 is vertically downward toward the upper surface of the fabric. The side walls and bottom of the cleaning tank 31 are respectively provided with a cleaning inlet pipe 311 and a cleaning outlet pipe 312, which are used to inject or discharge washing liquid, respectively.

[0037] The dewatering mechanism 4 includes at least one set of extrusion rollers. Each extrusion roller set includes an upper extrusion roller 41 and a lower extrusion roller 42 arranged opposite to each other. The upper extrusion roller 41 and the lower extrusion roller 42 are rotatably mounted on the mounting frame 43, and an extrusion gap is provided between them for the fabric to pass through. Both the upper extrusion roller 41 and the lower extrusion roller 42 are cylindrical rollers, and the length of their roller surfaces is not less than the width of the fabric. The two ends of the upper extrusion roller 41 are mounted on the mounting frame 43 through bearing seats, and an elastic clamping element is provided between the bearing seats and the mounting frame 43, so that the upper extrusion roller 41 can float in the vertical direction relative to the lower extrusion roller 42. The two ends of the lower extrusion roller 42 are fixedly mounted on the mounting frame 43 through bearing seats. When the fabric passes through the extrusion gap between the upper extrusion roller 41 and the lower extrusion roller 42, the elastic clamping force applied by the upper extrusion roller 41 applies a uniform radial extrusion force to the fabric, thereby quickly expelling the moisture from the fabric.

[0038] The drying mechanism 5 includes a drying chamber 51, which is a relatively enclosed box structure fixedly mounted on a frame. The drying chamber 51 also has material passage openings on its two opposite side walls for the fabric to pass through horizontally. Multiple hot air vents 52 are fixedly arranged inside the drying chamber 51 along the fabric's travel direction, with each hot air vent 52 facing the fabric. The hot air vents 52 are connected to an external hot air source via hot air ducts. The external hot air source includes, but is not limited to, an electrically heated hot air blower, a fuel-fired hot air furnace, or a steam exchanger. The hot air supply equipment can be flexibly selected according to the user's existing energy conditions. The top of the drying chamber 51 is equipped with an air collecting hood 511, and an air outlet pipe 512 is connected to the air collecting hood 511. The outlet end of the air outlet pipe 512 can be connected to an external exhaust system or a preheating recovery device. Based on the above configuration, when the fabric moves continuously in the drying chamber 51, hot air is blown from each hot air port 52 to the upper surface of the fabric and penetrates the fabric fiber layer. The humid and hot air carrying moisture rises and is discharged from the drying chamber 51 through the air outlet pipe 512.

[0039] In the embodiments of the present invention, the nonwoven fabric roll 11 to be cleaned is first placed on the unwinding roller 1. The front end of the fabric passes through each of the power roller groups 2 in sequence and is then pulled to the winding end. The power roller group 2 drives the fabric to move continuously along the direction of travel at a constant speed. The fabric first enters the cleaning mechanism 3. The upper spray pipe 32 of the spray assembly sprays the washing liquid vertically onto the upper surface of the fabric through the nozzle 33, forming a penetrating spray, so that the washing liquid fully wets the fibers and removes the stains. Then the fabric enters the dewatering mechanism 4. The upper pressure roller 41 and the lower pressure roller 42, which are arranged opposite each other, apply a squeezing force to the fabric, squeezing out the washing liquid and stains adsorbed inside the fabric. After dewatering, the fabric enters the drying mechanism 5. An external hot air source delivers hot air to several hot air vents 52 in the drying chamber 51. The hot air blows from the hot air vents 52 onto the surface of the fabric and passes through the fiber layer. The humid hot air carrying moisture is discharged from the air outlet pipe 512 at the top of the drying chamber 51, so that the fabric dries quickly.

[0040] This invention, by setting up a spray assembly, a squeezing roller group, and a hot air outlet 52 arranged sequentially along the fabric's travel direction, enables the nonwoven fabric to sequentially complete penetrating spray cleaning, mechanical squeezing dehydration, and hot air drying during continuous movement, forming a continuous operation process that requires no manual intervention, significantly reducing the labor intensity of workers and improving overall production efficiency.

[0041] This invention employs a spray pipe and nozzle 33 to spray the washing liquid vertically onto the unfolded nonwoven fabric, allowing the liquid to penetrate the fiber layer directly rather than merely flowing on the fabric surface. Combined with the continuous movement of the fabric driven by the power roller group 2, this ensures that every area of ​​the fabric receives sufficient and uniform liquid exchange, guaranteeing thorough cleaning between the fabric layers.

[0042] This invention sets up at least one set of extrusion rollers to apply mechanical extrusion force to the fabric immediately after it has been sprayed and cleaned. This removes a large amount of liquid adsorbed inside the fibers before it enters the drying process, so that the drying mechanism 5 only needs to deal with the small amount of residual moisture in the fabric. Combined with the hot air blown out of the hot air outlet 52 penetrating the fabric fiber layer and being actively discharged by the air outlet 512, a good hot air circulation is formed, achieving efficient drying.

[0043] like Figure 1-4 As shown, according to another embodiment, the cleaning assembly includes a plurality of rollers 34 rotatably disposed on the lower inner wall of the cleaning tank 31. The rollers 34 are rotatably disposed on the lower inner wall of the cleaning tank 31 and arranged parallel to each other along the fabric travel direction. The length of the roller surface of the rollers 34 is not less than the width of the fabric, and they are used to roll and support the fabric traveling from below. The cleaning tank 31 is provided with a lower spray pipe 35 between adjacent rollers 34. The lower spray pipe 35 extends along the width of the fabric, and its top is provided with a plurality of nozzles 33 spaced apart along the length direction. The outlet of each nozzle 33 is vertically upward toward the fabric. On the lower surface, the upper spray pipe 32 and the lower spray pipe 35 are alternately staggered in the direction of fabric travel. Based on the above arrangement, when the fabric moves continuously on the idler roller 34, the upper spray pipe 32 and the lower spray pipe 35 alternately and repeatedly scour the fabric, causing the upper and lower surfaces of the fabric to be subjected to liquid impacts from different directions. This promotes the removal of dirt in the fiber layer more quickly under the action of bidirectional alternating liquid flow. At the same time, the rolling support of the idler roller 34 reduces the sliding friction between the fabric and the cleaning tank 31 and ensures that the fabric remains flat and moves smoothly during the scouring process, thereby significantly improving the cleaning efficiency.

[0044] like Figure 1-4As shown, in this embodiment, the bottom of the cleaning tank 31 is provided with a liquid receiving tank 36, which is located below the lower spray pipe 35. The liquid receiving tank 36 is used to collect the washing liquid falling from top to bottom. The bottom or side wall of the liquid receiving tank 36 has an outlet, which is connected in sequence to a filter 39 and a circulation pump 38 via a circulation pipe 37. The inlet end of the filter 39 is connected to the outlet end of the liquid receiving tank 36, and the outlet end of the filter 39 is connected to the inlet end of the circulation pump 38. The outlet end of the circulation pump 38 is connected to the upper spray pipe 32 and the lower spray pipe 35 via the circulation pipe 37. This allows the washing liquid collected in the liquid receiving tank 36 to be filtered to remove impurities and then re-poured by the circulation pump 38 to the upper spray pipe 32 and the lower spray pipe 35 for circulating spraying, reducing... The washing liquid is consumed while maintaining the cleanliness of the sprayed liquid. Furthermore, the bottom of the liquid receiving tank 36 is provided with an inclined liquid guiding wall 361, which gradually slopes from the two side walls of the liquid receiving tank 36 towards the bottom center, so that impurities in the washing liquid can quickly settle and gather at the bottom, making it easier to be transported to the filter 39 for filtration. A heating element 362 is fixedly provided on the liquid guiding wall 361, which is attached to the surface of the liquid guiding wall 361 to heat the washing liquid in the liquid receiving tank 36, so as to improve the dissolving ability of the washing liquid on the surface of oil stains on the non-woven fabric fibers. In some other embodiments, heating mechanisms such as electric heating rods or steam coils can also be provided, which can be flexibly configured according to the actual working conditions to improve the cleaning effect.

[0045] like Figure 1-2 and Figure 5-6As shown, according to another embodiment, the upper pressure roller 41 and the lower pressure roller 42 are rotatably mounted on the mounting frame 43. The mounting frame 43 is U-shaped with its opening facing downwards. The lower pressure roller 42 is rotatably mounted on the open side of the mounting frame 43, and the upper pressure roller 41 is slidably mounted on the closed side of the mounting frame 43. Specifically, a pair of vertically arranged sliding grooves 432 are respectively opened on the inner walls of both sides of the mounting frame 43. Sliding blocks 45 are slidably arranged in the two sliding grooves 432. The two ends of the upper pressure roller 41 are rotatably connected to the two sliding blocks 45 respectively. To increase the stability of the upper pressure roller 41 when sliding, a guide rod 433 is also vertically fixed in the sliding groove 432. A guide hole is opened on the sliding block 45 to slide with the guide rod 433. The guide rod 433 passes through the guide hole and causes the sliding block 45 to slide along the guide rod 433. 3. Stable Lifting and Lowering: Furthermore, the two sliders 45 are fixedly connected by a sliding frame 47. The two sides of the sliding frame 47 are fixedly connected to the two sliders 45 respectively, and the entire mounting frame 43 is surrounded in the middle. An arc-shaped baffle 46 is fixedly installed on the upper part of the sliding frame 47. The baffle 46 wraps around the upper pressure roller 41 above and to the side but does not contact it. The two ends of the baffle 46 extend downward to a position close to the fabric travel path. The baffle 46 forms a shield above the upper pressure roller 41, which can block the liquid splashed during the extrusion process and protect the surrounding equipment. A cylinder 431 is fixedly installed on the outer wall of the mounting frame 43. The output end of the cylinder 431 is fixedly connected to the top of the baffle 46 to drive the sliding frame 47 and the upper pressure roller 41 to move up and down along the slide groove 432, thereby adjusting the size of the extrusion gap.

[0046] like Figure 1-2 and Figure 5-6 As shown, in this embodiment, the surface of the lower pressure roller 42 is covered with an elastic material, including but not limited to nitrile rubber, silicone rubber, polyurethane elastomer, or neoprene rubber. This material is used to make flexible contact with the fabric during extrusion and increase friction, avoiding indentations or damage to the fabric surface, while ensuring that the fabric is stably conveyed forward. A dewatering motor 44 that can drive the lower pressure roller 42 to rotate is fixedly installed on one side of the mounting frame 43. Specifically, the output shaft of the dewatering motor 44 is connected to one end of the lower pressure roller 42 through a coupling or belt drive, which drives the lower pressure roller 42 to rotate actively. When the fabric passes through the extrusion gap between the upper pressure roller 41 and the lower pressure roller 42, the active rotation of the lower pressure roller 42 drives the fabric to move, and the upper pressure roller 41 rotates accordingly due to the elastic clamping force, thereby achieving uniform extrusion of liquid from the fabric.

[0047] like Figure 1-2 and Figure 5-6As shown, according to another embodiment, a rinsing box 6 is fixedly installed on the upstream side of at least one set of the extrusion rollers. The rinsing box 6 is located directly above the fabric travel path. The rinsing box 6 has a long strip-shaped box structure and its length direction is perpendicular to the fabric travel direction. The length of the rinsing box 6 is not less than the width of the fabric. Its number and position can be flexibly set according to the actual situation and are not limited here. A clean water pipe 61 is provided on the top of the rinsing box 6, which is connected to a clean water source through a water supply pipeline. Several spray nozzles 62 are spaced apart along the length direction at the bottom of the rinsing box 6. The spray nozzles 62 are vertically downward facing the upper surface of the fabric. Water baffles 63 are fixedly installed on both sides of the rinsing box 6 to prevent water splashing. Based on the above settings, when the fabric passes under the rinsing box 6, clean water is evenly sprayed onto the fabric surface from the spray nozzles 62 to dilute and rinse the residual washing liquid in the fabric, thereby reducing the amount of detergent residue in the fabric fibers and improving the cleaning effect of subsequent extrusion and dehydration.

[0048] like Figure 1-2 and Figure 7 As shown, according to another embodiment, the dehydration mechanism 4 further includes a vacuum chamber 7. The vacuum chamber 7 is located upstream of the drying chamber 51 and below the fabric travel path. One or more vacuum suction ports 71 extending along the width of the fabric are provided on the upper surface of the vacuum chamber 7. The length of the vacuum suction port 71 is not less than the width of the fabric and faces the lower surface of the fabric. A connecting pipe 72 is provided at the bottom or side of the vacuum chamber 7. The connecting pipe 72 is connected to an external vacuum pump and a gas-liquid separation tank through an air extraction pipe. The gas-liquid separation tank is installed between the vacuum pump and the vacuum chamber 7. When the fabric passes over the vacuum chamber 7, the vacuum pump starts to create a negative pressure inside the vacuum chamber 7. Free water and some capillary water on the fabric are sucked into the vacuum suction port 71 under the action of pressure difference. After the water-containing air enters the gas-liquid separation tank, the liquid is separated and collected. The dry air continues to be discharged by the vacuum pump, thereby removing a large amount of moisture before the fabric enters the drying chamber 51 and improving the drying efficiency.

[0049] like Figure 1-2 and Figure 8-9As shown, according to another embodiment, the drying chamber 51 is also provided with a plurality of absorbent roller groups at intervals along the fabric travel direction. Each absorbent roller group includes an upper absorbent roller 54 and a lower absorbent roller 53 arranged opposite to each other. The upper absorbent roller 54 and the lower absorbent roller 53 are respectively rotatably mounted on the upper inner wall and the lower inner wall of the drying chamber 51. A contact gap adapted to the fabric thickness is left between the roller surfaces of the two rollers. The roller surfaces of the upper absorbent roller 54 and the lower absorbent roller 53 are respectively covered with a layer of absorbent material. The absorbent material includes, but is not limited to, polyvinyl alcohol absorbent sponge, super absorbent resin composite fiber felt, microfiber fleece or natural rubber sponge. When the fabric passes between the upper absorbent roller 54 and the lower absorbent roller 53, the roller surfaces of the upper and lower absorbent rollers 53 contact the upper and lower surfaces of the fabric respectively. The capillary adsorption of the absorbent material directly absorbs the residual moisture between the fabric fibers, thereby further improving the drying efficiency.

[0050] like Figure 1-2 and Figure 8-9 As shown, in this embodiment, the hot air outlet 52 includes a first outlet 521 and a second outlet 522. The first outlet 521 is located in the gap between two adjacent lower suction rollers 53, and its air outlet direction is vertically upward towards the lower surface of the fabric. It is used to blow hot air directly onto the fabric to accelerate the evaporation of moisture within the fiber layer. The second outlet 522 is located at the bottom or side of the lower suction roller 53, and its air outlet direction is towards the roller surface of the lower suction roller 53. It is used to blow hot air onto the absorbent material on the surface of the lower suction roller 53 to... The fabric is dried by passing through the fabric fiber layer and rising as hot air blows upward from the first air outlet 521. The hot air then enters the air collection hood 511 at the top of the drying chamber 51 through the gap between the upper suction rollers 54. During this process, the rising hot air blows across the roller surface of the upper suction rollers 54, thus drying the water-absorbing material of the upper suction rollers 54. The fabric is dried in the drying chamber 51 by the alternating drying action of multiple water-absorbing roller groups and hot air outlets 52, gradually removing moisture and achieving rapid and thorough drying.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-efficiency cleaning device for nonwoven fabric, comprising a frame, a unwinding roller (1) rotatably mounted on one side of the frame, a fabric roll (11) sleeved on the unwinding roller (1), and a plurality of power roller groups (2) capable of driving the fabric to move, characterized in that: The frame is also provided with a washing mechanism (3), a dehydration mechanism (4) and a drying mechanism (5) in sequence along the direction of fabric travel; The cleaning mechanism (3) includes a cleaning tank (31) and several spray components fixedly installed in the cleaning tank (31). The spray components include an upper spray pipe (32) and several nozzles (33) are connected to the bottom of the upper spray pipe (32). The dewatering mechanism (4) includes at least one set of extrusion rollers, each set of extrusion rollers including an upper extrusion roller (41) and a lower extrusion roller (42) arranged opposite to each other, and an extrusion gap for the fabric to pass through is provided between the upper extrusion roller (41) and the lower extrusion roller (42); The drying mechanism (5) includes a drying box (51) and several hot air vents (52) fixed inside the drying box (51). The hot air vents (52) are connected to an external hot air source, and an air outlet pipe (512) is connected to the top of the drying box (51).

2. The high-efficiency cleaning device for nonwoven fabrics as described in claim 1, characterized in that: The cleaning assembly includes several rollers (34) rotatably mounted on the lower inner wall of the cleaning tank (31). The rollers (34) are arranged in parallel along the fabric travel direction. The cleaning tank (31) is provided with a lower spray pipe (35) between adjacent rollers (34). Several nozzles (33) are provided on the top of the lower spray pipe (35).

3. The high-efficiency cleaning device for nonwoven fabrics as described in claim 2, characterized in that: The bottom of the cleaning tank (31) is provided with a liquid receiving tank (36), which is connected to a filter (39) and a circulation pump (38) through a circulation pipe (37). The liquid outlet of the circulation pump (38) is connected to the upper spray pipe (32) and the lower spray pipe (35).

4. The high-efficiency cleaning device for nonwoven fabrics as described in claim 3, characterized in that: The bottom of the liquid receiving tank (36) is provided with an inclined liquid guiding wall (361), and a heating element (362) is fixedly provided on the liquid guiding wall (361).

5. The high-efficiency cleaning device for nonwoven fabrics as described in claim 1, characterized in that: The upper pressure roller (41) and the lower pressure roller (42) are respectively rotatably mounted on the mounting frame (43). The mounting frame (43) is U-shaped. The lower pressure roller (42) is rotatably mounted on the open side of the mounting frame (43), and the upper pressure roller (41) is slidably mounted on the closed side of the mounting frame (43). A cylinder (431) that can drive the upper pressure roller (41) to slide is fixedly mounted on the outer wall of the mounting frame (43).

6. The high-efficiency cleaning device for nonwoven fabrics as described in claim 5, characterized in that: The surface of the lower pressure roller (42) is covered with an elastic material, and a dewatering motor (44) that can drive the lower pressure roller (42) to rotate is fixedly installed on one side of the mounting frame (43).

7. The high-efficiency cleaning device for nonwoven fabrics as described in claim 1, characterized in that: At least one of the extrusion roller groups is fixedly provided with a rinsing box (6) on its upstream side. The rinsing box (6) is located above the fabric travel path. The rinsing box (6) is connected to a clean water source and has several spray nozzles (62) at its bottom.

8. The high-efficiency cleaning device for nonwoven fabrics as described in claim 1, characterized in that: The dehydration mechanism (4) also includes a vacuum box (7), which is located on the upstream side of the drying box (51). The vacuum box (7) is connected to an external vacuum pump and a gas-liquid separation tank. A vacuum suction port (71) is provided on the top of the vacuum box (7), and the vacuum suction port (71) faces the fabric travel path.

9. The high-efficiency cleaning device for nonwoven fabrics as described in claim 1, characterized in that: The drying box (51) is also equipped with several water-absorbing roller groups. Each water-absorbing roller group includes an upper suction roller (54) and a lower suction roller (53) arranged opposite to each other. The roller surfaces of the upper suction roller (54) and the lower suction roller (53) are covered with water-absorbing material.

10. The high-efficiency cleaning device for nonwoven fabrics as described in claim 9, characterized in that: The hot air vent (52) includes a first vent (521) and a second vent (522). The first vent (521) is located between two adjacent lower suction rollers (53) and faces the fabric travel path. The second vent (522) is located at the bottom or side of the lower suction roller (53) and faces the lower suction roller (53).

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