Equipment for recycling fiber from waste non-woven fabric

Abstract

The invention provides equipment for recycling fiber from waste non-woven fabrics, and relates to the technical field of recycling of waste textiles. A waste non-woven fabric cyclic regeneration fiber device comprises a spraying machine used for spraying a mixed solution with an auxiliary agent on a cloth piece to humidify the cloth piece to obtain a humidified cloth, and a steaming machine used for drying the humidified cloth piece to ferment the auxiliary agent in the humidified cloth to obtain a steamed cloth. Through the links of wetting pretreatment of the spraying machine and drying fermentation of the steaming machine, the flexibility of the non-woven fabric can be improved, the cohesive force between fibers is effectively reduced, the subsequent opening and carding process is easier and smoother, in addition, the drying and air cooling strength is controlled, the fibers are always in a moist environment in the subsequent opening and conveying process, and the quality of the non-woven fabric is improved. The fiber strength can be maintained; by means of the feeding assembly, the fibers are always in a wet environment in the subsequent opening and conveying process, meanwhile, the opener is of an integrated structure of the cylinder, the feeding roller and the carding roller, damage to the fibers in the opening and carding process is greatly reduced, and the length and integrity of the reserved fibers are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of waste textile recycling technology, and in particular to a waste nonwoven fabric recycling and fiber regeneration equipment. Background Technology

[0002] Traditional recycling processes for waste nonwoven fabrics to produce fibers typically involve multiple opening machines, balers, and blower conveying devices, without pretreatment steps such as adding auxiliaries or drying and fermentation. However, this recycling process still has the following problems: First, it generally has three opening points, a relatively large number, which causes significant damage to the fibers during the opening and combing process, resulting in shorter retained fiber lengths. Second, the use of pneumatic conveying causes fibers to become entangled, easily forming fiber knots. Third, pneumatic conveying dries out the working area inside the opening equipment; fibers in this dry environment have reduced strength and are more prone to breakage. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a waste nonwoven fabric recycling fiber equipment. By adding a wet pretreatment stage with a spraying machine and a drying and fermentation stage with a steaming machine, the softness of the nonwoven fabric can be improved, the cohesion between fibers can be effectively reduced, and the subsequent opening and carding process can be made easier and smoother. In addition, by controlling the intensity of drying and air cooling, the fibers are kept in a moist environment throughout the subsequent opening and conveying process, which is conducive to maintaining fiber strength. Through the feeding component, the fibers are kept in a moist environment throughout the subsequent opening and conveying process, which effectively solves the problem of internal dryness of equipment and reduced fiber strength and easy breakage caused by airflow conveying in traditional processes. At the same time, the opening machine adopts an integrated structure of cylinder, feeding roller and carding roller, replacing the multi-opening point design of traditional processes, which greatly reduces fiber damage during the opening and carding process and significantly improves the length and integrity of the retained fibers.

[0004] This application provides the following technical solution: A waste nonwoven fabric recycling and fiber regeneration equipment includes: A slitting machine is used to cut waste materials into uniformly sized pieces of cloth.

[0005] A spraying machine, located on one side of the slitting machine, is used to spray a mixture of additives onto the fabric to wet it, thereby obtaining a wetted fabric.

[0006] A steaming machine, located on one side of a spraying machine, is used to dry the wetted fabric sheets, allowing the additives in the wetted fabric to ferment and obtain steamed fabric.

[0007] The air-cooled cooling machine is located on one side of the steaming machine and is used to cool the wetted fabric after drying and fermentation to obtain fabric at room temperature.

[0008] The opening machine is located on one side of the air-cooled cooling machine and is used to open the cooled fabric to a fibrous state.

[0009] Four feeding components are respectively located between the slitting machine and the coating machine, the coating machine and the steaming machine, the steaming machine and the air-cooled cooling machine, and the air-cooled cooling machine and the opening machine, for conveying materials.

[0010] A baling machine is installed on one side of an opening machine and is used to pack and arrange the opened fiber material.

[0011] In some embodiments, the slitting machine is a straight-blade slitting machine.

[0012] In some embodiments, the slitting machine is a vertical cross slitting machine that combines straight blades and circular blades.

[0013] In some embodiments, the spraying machine includes a wall panel structure, a liquid dispensing assembly, an extrusion assembly, a water circulation component, and at least one spraying assembly. The wall panel structure is provided with a first mesh belt curtain and a second mesh belt curtain. The spraying assembly includes a spray pipe fixedly connected to the wall panel structure. The bottom surface of the spray pipe is equipped with nozzles arranged at equal intervals, and the nozzles are located above the first mesh belt curtain. The liquid dispensing assembly includes an additive dilution tank and at least two material tanks. A suction pump is installed on the additive dilution tank. The inlet end of the suction pump is connected to the additive dilution tank through a pipe, and the outlet end of the suction pump is connected to the spray pipe through a pipe. A metering pump is installed on the material tanks. The inlet end of the metering pump is connected to the diluent tank through a pipe, and the outlet end of the metering pump is connected to the additive dilution tank through a pipe.

[0014] In some embodiments, the extrusion assembly includes two extrusion rollers that rotate in opposite directions and have an extrusion space between them. A liquid collection tray is provided below each of the two extrusion rollers and is mounted on a second mesh belt curtain. The water circulation component includes at least one first negative pressure dehumidification pipe, a second negative pressure dehumidification pipe, and a purification structure. The first negative pressure dehumidification pipe is disposed inside the first mesh belt curtain, and the second negative pressure dehumidification pipe is disposed inside the second mesh belt curtain.

[0015] In some embodiments, the purification assembly includes an underground water tank, a fan, an air-liquid separator, a sewage pump, and a filter tank. The bottom surfaces of the two liquid collection trays are fixedly connected to return water pipes, and the end of the return water pipe away from the liquid collection tray is fixedly connected to the underground water tank. The feed end of the air-liquid separator is connected to a first negative pressure dehumidification pipe and a second negative pressure dehumidification pipe through a pipe. The exhaust end of the air-liquid separator is fixedly connected to the air inlet end of the fan. The liquid discharge end of the air-liquid separator and the liquid discharge end of the underground water tank are both fixedly connected to the water inlet end of the sewage pump. The liquid discharge end of the sewage pump is fixedly connected to the liquid inlet end of the filter tank.

[0016] In some embodiments, the steaming machine includes a casing, a conveying assembly, and a circulating drying assembly. A partition is installed in the middle of the casing, which divides the casing into a circulating chamber and a drying chamber that are connected at the top and bottom. The conveying assembly includes at least two mesh belt conveyor structures arranged parallel to each other in the vertical direction, and the feeding directions of adjacent mesh belt conveyor structures are opposite. The fabric is flipped over and falls into the lower mesh belt conveyor structure in sequence, changing its direction.

[0017] In some embodiments, the circulating drying assembly includes a heater installed in the circulating chamber, a dehumidifying fan installed on the casing, and at least one circulating fan installed on the casing. The air inlet of the circulating fan is fixedly connected to a partition plate, the air outlet of the circulating fan is located in the circulating chamber, and the air outlet of the circulating fan is located above the heater. The heater is fixedly connected to an inlet steam pipe and an outlet return water pipe. The upper surface of the casing is fixedly connected to a makeup air pipe, which is connected to the drying chamber. The air inlet of the dehumidifying fan is connected to the circulating chamber, and the connection point is located between the air outlet of the circulating fan and the heater. The air outlet of the dehumidifying fan is fixedly connected to a three-way ventilation duct. A swing valve is installed in the three-way ventilation duct, and a preheating air duct is also fixedly connected to the three-way ventilation duct.

[0018] In some embodiments, the air-cooled cooling machine includes a second mesh belt structure and a blower, with the exhaust end of the blower located above the second mesh belt structure.

[0019] In some embodiments, the opening machine consists of a cylinder, a feed curtain, two feed rollers and three carding rollers, wherein the cylinder, the two feed rollers and the three carding rollers are all covered with metal needle cloth.

[0020] In some embodiments, the feeding assembly includes a motor, a drive roller, a driven roller, and a conveyor belt. The output shaft of the motor is mounted on the drive roller, and the drive roller and the driven roller are connected by a conveyor belt.

[0021] In some embodiments, the packing machine is a double-box packing machine.

[0022] The embodiments of this application have the following advantages: By adding a wet pretreatment process using a spraying machine and a drying and fermentation process using a steaming machine, the softness of nonwoven fabrics can be improved, effectively reducing the cohesion between fibers and making the subsequent opening and carding process easier and smoother. In addition, controlling the intensity of drying and air cooling ensures that the fibers are always in a humid environment during the subsequent opening and conveying process, which is beneficial to maintaining fiber strength. At the same time, the opening machine adopts an integrated structure of cylinder, feeding roller, and carding roller, replacing the multi-opening point design of the traditional process, which greatly reduces fiber damage during the opening and carding process and significantly improves the retention of fiber length and integrity.

[0023] By using four conveyor belt feeding components to realize material transfer between each process, the problem of internal dryness, reduced fiber strength and easy breakage caused by air conveying in traditional processes is solved from the root. It also effectively avoids the problem of fibers entanglement and fiber knot formation caused by air conveying.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of this application is shown.

[0027] Figure 2 A schematic diagram of the leaching machine of this application is shown.

[0028] Figure 3 A schematic diagram of the leaching machine of this application is shown.

[0029] Figure 4 A schematic diagram of the leaching machine of this application is shown.

[0030] Figure 5 A schematic diagram of the steaming machine of this application is shown.

[0031] Figure 6 A schematic diagram of the steaming machine of this application is shown.

[0032] Explanation of key component symbols: 1. Slitting machine; 2. Coating machine; 201. First mesh belt curtain; 202. Spray head; 203. First negative pressure dehumidification pipe; 204. Extrusion roller; 205. Liquid collection tray; 206. Second mesh belt curtain; 207. Second negative pressure dehumidification pipe; 209. Additive dilution tank; 210. Metering pump; 211. Material tank; 212. Suction pump; 213. Spray pipe; 214. Underground water tank; 215. Filter tank; 216. Gas-liquid separator; 217. Fan; 218. Sewage pump; 3. Evaporator; 301. Mesh belt conveyor structure; 302. Circulating fan; 303. Exhaust fan; 304. Swing valve; 305. Three-way ventilation duct; 306. Preheating duct; 307. Heater; 308. Steam inlet pipe; 309. Water outlet and return pipe; 310. Make-up air pipe; 4. Air-cooled cooling machine; 5. Loosening machine; 6. Packaging machine. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In the existing technology, the recycling of recycled fibers from waste nonwoven fabrics has the following problems: First, there are generally three opening points, and the large number of opening points causes the fibers to be significantly damaged during the opening and combing process, resulting in shorter fiber lengths. Second, the use of airflow conveying causes the fibers to become entangled and easily form fiber knots. Third, airflow conveying makes the working area inside the equipment dry, and the fibers in this dry environment have reduced strength and are more prone to breakage.

[0039] like Figure 1-6 As shown, in order to solve the above-mentioned technical problems, this application provides a waste nonwoven fabric recycling fiber equipment, including a slitting machine 1, a coating machine 2, a steaming machine 3, an air-cooled cooling machine 4, an opening machine 5, a baling machine 6, and four feeding components.

[0040] Slitting machine 1 is used to cut waste materials into uniformly sized fabric pieces.

[0041] In one embodiment, the slitting machine 1 is a straight blade slitting machine.

[0042] A straight blade slitting machine is a device that uses a straight blade that moves up and down reciprocating to cut waste fabric into pieces. The sharp edge of the blade and the lower blade fixed on the blade holder form a shearing pair. When the waste fabric is conveyed to the shearing area, the moving blade and the stationary lower blade generate shearing force, cutting the fabric along a set width or length.

[0043] In another embodiment, the slitting machine 1 is a vertical cross slitting machine consisting of a combination of straight blades and circular blades.

[0044] The core of the vertical cross-cutting machine is a vertical collaborative cutting mode that uses a circular blade for fixed-width slitting and a straight blade for fixed-length cutting. The fabric is cut horizontally by the circular blade for fixed-width slitting, and then cut vertically by the straight blade for fixed-length cutting.

[0045] The size of the fabric pieces cut in a straight-blade slitting machine or a vertical cross-cutting slitting machine is adjusted by the feeding speed and the blade speed to ensure that the waste nonwoven fabric is cut evenly.

[0046] The slitting machine 2 is located on one side of the slitting machine 1 and is used to spray the fabric sheet with a mixture containing additives to wet it and obtain wetted fabric.

[0047] In this embodiment, the spraying machine 2 includes a wall panel structure, a liquid dispensing component, an extrusion component, a water circulation component, and at least one spraying component. The wall panel structure is provided with a first mesh belt curtain 201 and a second mesh belt curtain 206. The fabric will be sprayed onto the first mesh belt curtain 201 to become a wet fabric. Then, the wet fabric will be squeezed out of excess liquid by the extrusion component, and then the fabric with liquid uniformly will be fed out by the second mesh belt curtain 206.

[0048] The sprinkler assembly includes a sprinkler pipe 213 fixedly connected to the wall panel structure. Sprinklers 202 arranged at equal intervals are installed on the bottom surface of the sprinkler pipe 213, and the sprinklers 202 are located above the first mesh curtain 201.

[0049] Multiple spray pipes 213 are arranged at equal intervals on the wall panel structure. The fabric is sprayed with the mixed liquid multiple times through the nozzles 202 on the multiple spray pipes 213 to ensure that the fabric is fully soaked in the mixed liquid.

[0050] The liquid supply component supplies liquid to the spraying component, which then sprays the dry fabric as it is conveyed by the first mesh belt curtain 201. Subsequently, the liquid is discharged by the squeezing component, which effectively solves the problems of uneven spraying dosage and large differences in liquid content between the upper and lower layers during static soaking. This significantly improves the uniformity of liquid content on the fabric. The fabric is then conveyed and discharged by the second mesh belt curtain 206. The entire process eliminates the need for manual material laying, spraying, and long-term static fermentation, greatly shortening the leaching treatment time and improving overall production continuity and operational efficiency.

[0051] In this embodiment, the liquid preparation assembly includes an auxiliary agent dilution tank 209 and at least two material tanks 211. A suction pump 212 is installed on the auxiliary agent dilution tank 209. The inlet end of the suction pump 212 is connected to the auxiliary agent dilution tank 209 through a pipe, and the outlet end of the suction pump 212 is connected to a spray pipe 213 through a pipe. A metering pump 210 is installed on the material tanks 211. The inlet end of the metering pump 210 is connected to the diluent tank 211 through a pipe, and the outlet end of the metering pump 210 is connected to the auxiliary agent dilution tank 209 through a pipe.

[0052] The auxiliary agent dilution tank 209 is a hollow box structure. The auxiliary agent dilution tank 209 is also equipped with a stirring structure. The stirring structure can be composed of a motor and a stirring shaft. The motor is located outside the auxiliary agent dilution tank 209, while the stirring shaft is rotatably located inside the auxiliary agent dilution tank 209. The stirring and mixing of the liquid inside the auxiliary agent dilution tank 209 is completed by the motor driving the stirring shaft to rotate.

[0053] In this embodiment, at least two tanks 211 contain slow-release water and additives respectively, and the different raw materials in the tanks 211 are metered and transported to the additive dilution tank 209 by the metering pump 210.

[0054] An additive concentration detector is also installed on the additive dilution tank 209. The detection end of the additive concentration detector is located inside the additive dilution tank 209 to monitor the additive concentration in the mixture in the additive dilution tank 209 in real time. The additive concentration detector is designed based on the principle of refraction and determines the concentration by measuring the refractive index of the solution. It has a high-precision automatic concentration compensation function. According to the measurement results of the additive concentration detector, the addition amount of different metering pumps 210 is controlled to obtain a mixture with a suitable additive concentration.

[0055] In this embodiment, the extrusion assembly includes two extrusion rollers 204, which rotate in opposite directions and are provided with an extrusion space between them. A liquid collection tray 205 is provided below each of the two extrusion rollers 204 and is mounted on the second mesh belt curtain 206.

[0056] Both extrusion rollers 204 consist of a motor and an extrusion wheel, and the two motors rotate in opposite directions. By using the two extrusion wheels rotating in opposite directions, the wet fabric in the extrusion space is extruded to remove excess liquid from the wet fabric.

[0057] Both liquid collection trays 205 are boat-shaped and are capable of collecting the extruded liquid.

[0058] In this embodiment, the water circulation component includes at least one first negative pressure dehumidification pipe 203, a second negative pressure dehumidification pipe 207, and a purification structure. The first negative pressure dehumidification pipe 203 is disposed inside the first mesh curtain 201, and the second negative pressure dehumidification pipe 207 is disposed inside the second mesh curtain 206.

[0059] Since the first negative pressure dehumidification pipe 203 and the second negative pressure dehumidification pipe 207 are located inside the first mesh belt curtain 201 and the second mesh belt curtain 206 respectively, they can dehumidify the liquid attached to the mesh belt, so that the liquid attached to the first mesh belt curtain 201 and the second mesh belt curtain 206 is collected into the first negative pressure dehumidification pipe 203 and the second negative pressure dehumidification pipe 207.

[0060] In this embodiment, the purification components include an underground water tank 214, a fan 217, a gas-liquid separator 216, a sewage pump 218, and a filter tank 215. The bottom surfaces of the two liquid collection trays 205 are fixedly connected to return water pipes, and the end of the return water pipe away from the liquid collection tray 205 is fixedly connected to the underground water tank 214.

[0061] The underground water tank 214 is located underground, and the return water pipe is fixedly connected to the bottom surface of the liquid collection tray 205. The extruded liquid accumulated in the two liquid collection trays 205 will enter the underground water tank 214 under the action of the return water pipe. The extruded liquid is temporarily stored in the underground water tank 214 and preliminarily purified by sedimentation.

[0062] In this embodiment, the feed end of the gas-water separator 216 is connected to the first negative pressure dehumidification pipe 203 and the second negative pressure dehumidification pipe 207 via a pipe. The exhaust end of the gas-water separator 216 is fixedly connected to the air inlet end of the fan 217. The liquid discharge end of the gas-water separator 216 and the liquid discharge end of the underground water tank 214 are both fixedly connected to the water inlet end of the sewage pump 218. The liquid discharge end of the sewage pump 218 is fixedly connected to the liquid inlet end of the filter tank 215.

[0063] The gas-liquid separator 216 is an existing structure that uses the principles of centrifugal separation and wire mesh filtration to achieve liquid removal. It is mainly composed of a cylinder, a cyclone separator, a high-efficiency foam breaker, a drain valve, and other main components.

[0064] The fan 217 draws air into the gas-water separator 216, causing the gas-water separator 216 to provide negative pressure suction to the first negative pressure dehumidification pipe 203 and the second negative pressure dehumidification pipe 207 through the pipes. The gas-liquid mixture is transported from the first negative pressure dehumidification pipe 203 and the second negative pressure dehumidification pipe 207 to the gas-water separator 216 through the pipes. After gas-liquid separation in the gas-water separator 216, the gas is discharged by the fan 217, while the liquid is temporarily stored inside the gas-water separator 216. After the sewage pump 218 is connected to the liquid discharge end of the gas-water separator 216, the liquid in the gas-water separator 216 is discharged by the sewage pump 218.

[0065] In this embodiment, the liquid collected in the underground water tank 214 and the liquid in the gas-liquid separator 216 are transported to the interior of the filter tank 215 by the sewage pump 218, where physicochemical purification treatment such as flocculation and sedimentation can be carried out.

[0066] The steaming machine 3 is located on one side of the condensing machine 2 and is used to dry the wetted fabric, so that the additives in the wetted fabric ferment and steamed fabric is obtained.

[0067] In this embodiment, the steaming machine 3 includes a casing, a conveying assembly, and a circulating drying assembly. A partition is installed in the middle of the casing, which divides the casing into a circulating chamber and a drying chamber that are connected at the top and bottom. The conveying assembly includes at least two mesh belt conveyor structures 301 arranged parallel to each other in the vertical direction. The feeding directions of adjacent mesh belt conveyor structures 301 are opposite. The fabric is flipped over and falls into the lower mesh belt conveyor structure 301 in sequence and changes direction.

[0068] In this embodiment, the mesh belt conveyor structure 301 includes a first layer mesh belt, a second layer mesh belt, a third layer mesh belt, a fourth layer mesh belt, and a fifth layer mesh belt arranged parallel to each other in a vertical direction. The feeding end of the first layer mesh belt passes through the housing and extends to the outside of the housing, while the unloading end of the fifth layer mesh belt passes through the housing and extends to the outside of the housing. That is, the motors in the first, second, third, fourth, and fifth layer mesh belts rotate in opposite directions. When the fabric enters the second layer mesh belt from the first layer mesh belt, the fabric will be flipped once, and so on until the fabric falls to the fifth layer mesh belt for discharge. In this embodiment, the circulating drying assembly includes a heater 307 installed in the circulating chamber, a dehumidifying fan 303 installed on the casing, and at least one circulating fan 302 installed on the casing. The air inlet of the circulating fan 302 is fixedly connected to the partition plate, and the air outlet of the circulating fan 302 is located in the circulating chamber. The air outlet of the circulating fan 302 is located above the heater 307. After the partition plate separates the drying chamber and the circulating chamber, the bottom of the drying chamber and the bottom of the circulating chamber are connected. The air inlet of the circulating fan 302 assembly adopts a variable diameter air duct to transport the air at the top of the drying chamber to the circulating chamber, and the air flows vertically downward in the circulating chamber.

[0069] The circulating fan 302 group delivers airflow through a variable diameter air duct. An air distribution plate is installed inside the air inlet of the circulating fan 302 group, which mixes various types of air entering the circulating fan 302 group.

[0070] In this embodiment, a steam inlet pipe 308 and a water outlet / return pipe 309 are fixedly connected to the heater 307. A diaphragm regulating valve is installed on the steam inlet pipe 308, and a drain valve is installed on the water outlet / return pipe 309. Platinum resistance thermometers are installed on both the drying chamber and the water outlet / return pipe 309.

[0071] The steam inlet pipe 308 is connected to the steam engine. Steam enters the heater 307 through the steam inlet pipe 308 and, after being cooled in the heater 307, flows back to the steam engine through the outlet and return water pipe 309. The heater 307 can heat the gas discharged into the circulation chamber by the circulating fan 302 group.

[0072] In this embodiment, a make-up air pipe 310 is fixedly connected to the upper surface of the housing, and the make-up air pipe 310 is connected to the drying chamber. The air inlet of the dehumidifying fan 303 is connected to the circulation chamber, and the connection point is located between the exhaust end of the circulating fan 302 and the heater 307. The exhaust end of the dehumidifying fan 303 is fixedly connected to a three-way ventilation pipe 305. A swing valve 304 is installed inside the three-way ventilation pipe 305. A preheating air pipe 306 is also fixedly connected to the three-way ventilation pipe 305.

[0073] In this embodiment, a diaphragm regulating valve is installed on the steam inlet pipe 308, a steam trap is installed on the water outlet pipe 309, and platinum resistance thermometers are installed on both the drying chamber and the water outlet pipe 309. The temperature inside the drying chamber and the water outlet temperature of the water outlet pipe 309 are monitored in real time by the platinum resistance thermometers, and the temperature inside the drying chamber is adjusted by regulating the steam flow rate through the diaphragm regulating valve.

[0074] As the hot air heats the fabric within the mesh belt structure, it generates some humid steam. When the humid steam and the air drawn into the drying chamber from the outside are drawn back into the circulation chamber by the circulation fan 302, the dehumidification fan 303 can remove a portion of the humid steam before it dries.

[0075] The wet steam will be discharged through the three ventilation pipes 305, while the swing valve 304 can adjust the amount of wet steam directly discharged from the three ventilation pipes 305 and the amount of steam entering the preheating air pipe 306. The swing valve 304 is an electric actuator, which controls the opening degree through PLC to adjust the flow rate of hot and humid air delivered to the feed end of the machine casing, thereby preheating the fabric entering the machine casing.

[0076] The air-cooled cooling machine 4 is located on one side of the steaming machine 3 and is used to air-cool the wetted fabric after drying and fermentation to obtain fabric at room temperature.

[0077] In this embodiment, the air-cooled cooling machine 4 includes a second mesh belt structure and a blower, with the exhaust end of the blower located above the second mesh belt structure.

[0078] The second mesh belt structure has the same structure as the first mesh belt structure. The blower's blowing end faces upwards on the second mesh belt structure, which allows the blown air to cool the fabric that has been dried on the second mesh belt structure.

[0079] In this embodiment, by controlling the intensity of drying and air cooling, a fabric sheet with a certain moisture content can be obtained, so that the fibers are always in a moist environment during the subsequent opening and conveying process, which is beneficial to maintaining the strength of the fibers.

[0080] The opening machine 5 is located on one side of the air-cooled cooling machine 4 and is used to open the cooled fabric to the fiber state.

[0081] In this embodiment, the opening machine 5 consists of a cylinder, a feed curtain, two feed rollers and three carding rollers, all of which are covered with metal needle cloth.

[0082] The cylinder is the core of the equipment, the opening roller, which is the core component for beating, combing, and breaking up waste fabric. The feed roller is the core component of the feeding system. It is a pair of roller assemblies used to force and flatten clumps of waste fabric of uneven thickness and to stably transport it to the cylinder opening area, preventing the fabric from slipping or shifting. The combing roller is a core component used for fine combing and directional arrangement of fibers. It is often configured in the downstream combing equipment of a single-roller opener or integrated in a composite opener and combing machine. Its function is to further refine the loose fiber bundles after opening into single fibers and remove residual fine impurities.

[0083] The motor speeds of the feeding roller and the combing roller are controlled separately by frequency converters, which makes it easy to adjust the machine's feeding speed and combing speed.

[0084] Four feeding components are respectively set between the slitting machine 1 and the condenser 2, the condenser 2 and the steamer 3, the steamer 3 and the air-cooled cooling machine 4, and the air-cooled cooling machine 4 and the opening machine 5, for conveying materials.

[0085] The feeding assembly includes a motor, a drive roller, a driven roller, and a conveyor belt. The output shaft of the motor is mounted on the drive roller, and the drive roller and the driven roller are connected by a conveyor belt.

[0086] The four feeding components respectively complete the cutting of the block on the slitting machine 1 and convey the cloth to the sizing machine 2 for wetting, convey the wet cloth in the sizing machine 2 to the steaming machine 3 for drying, convey the dried cloth in the steaming machine 3 to the air-cooled cooling machine 4 for cooling, and convey the cooled cloth in the air-cooled cooling machine 4 to the opening machine 5 for opening.

[0087] The baling machine 6 is located on one side of the opening machine 5 and is used to pack and arrange the opened fiber material.

[0088] In this embodiment, the packing machine 6 is a double-box packing machine.

[0089] After being opened, the fabric will be conveyed to the baling machine 6 through the negative pressure air conveying system. The baling machine 6 is equipped with two independent material boxes on the left and right. The working state is switched through the electrical control system. When one material box is feeding and pre-pressing, the other material box simultaneously completes the main pressing, bundling and bagging.

[0090] Working principle: When using, First, the waste non-woven fabric is placed on the slitting machine 1. The slitting machine 1 cuts the large pieces of waste non-woven fabric into small pieces of fabric. Then, the small pieces of fabric are conveyed to the coating machine 2 through the feeding component.

[0091] In the saturation machine 2, the auxiliary agent dilution tank 209 mixes the slow-release water and auxiliary agent in a suitable ratio through the metering pump 210, and the suction pump 212 sprays the mixed auxiliary agent solution onto the small piece of fabric through the spray pipe 213 to wet the fabric.

[0092] The humidified fabric is conveyed to the steaming machine 3 via the feeding assembly. In the steaming machine 3, the fabric passes through the first, second, third, fourth, and fifth mesh belts in sequence. During the conveying process, the fabric is constantly turned over. At the same time, the circulating drying assembly works. The heater 307 heats the gas discharged into the circulating chamber by the circulating fan 302. The hot air dries the fabric and causes the additives in the fabric to ferment. The wet steam formed after the hot air heats the fabric is partially drawn away by the exhaust fan 303. The amount of wet steam discharged and the amount of steam entering the preheating air duct 306 are adjusted by the swing valve 304 to preheat the fabric entering the machine casing.

[0093] After drying and fermentation, the fabric is conveyed to the air-cooled cooling machine 4 via the feeding component. The air blown out by the blower cools the dried fabric on the second mesh belt structure to obtain a normal temperature fabric.

[0094] After cooling, the fabric is conveyed to the opening machine 5 via the feeding assembly. In the opening machine 5, the feed rollers force the fabric to flatten and stably convey it to the cylinder opening area. The cylinder beats, combs, and breaks up the waste fabric. The combing rollers further refine the loose fiber bundles after opening into single fibers and remove residual small impurities.

[0095] After being opened, the fiber material is conveyed to the baler 6 through a negative pressure air conveying system. The baler 6 switches the working status of the two independent material boxes on the left and right through the electrical control system. When one material box is feeding and pre-compressing, the other material box simultaneously completes the main compression, bundling and bale discharge, and finally completes the recycling of waste non-woven fabric.

[0096] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0097] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0098] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A waste nonwoven fabric recycling and fiber regeneration equipment, characterized in that, include: A slitting machine (1) is used to cut waste materials into uniformly sized fabric pieces; A slitting machine (2) is set on one side of a slitting machine (1) and is used to spray a mixture of additives onto the fabric to wet it and obtain a wetted fabric. A steaming machine (3) is set on one side of a sifting machine (2) to dry the wetted fabric, so that the additives in the wetted fabric ferment and steamed fabric is obtained. The air-cooled cooling machine (4) is set on one side of the steaming machine (3) and is used to air-cool the wetted fabric after drying and fermentation to obtain normal temperature fabric. The opening machine (5) is set on one side of the air-cooled cooling machine (4) and is used to open the cooled fabric to the fiber state. Four feeding components are respectively set between the slitting machine (1) and the slurry machine (2), the slurry machine (2) and the steaming machine (3), the steaming machine (3) and the air-cooled cooling machine (4), and the air-cooled cooling machine (4) and the opening machine (5) for conveying materials; The baling machine (6) is set on one side of the opening machine (5) for baling and sorting the opened fiber material.

2. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The slitting machine (1) is a straight blade slitting machine; Or the slitting machine (1) is a vertical cross slitting machine that combines straight blades and circular blades.

3. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The ionizing machine (2) includes a wall panel structure, a liquid dispensing assembly, an extrusion assembly, a water circulation assembly, and at least one spraying assembly. The wall panel structure is provided with a first mesh belt curtain (201) and a second mesh belt curtain (206). The spraying assembly includes a spray pipe (213) fixedly connected to the wall panel structure. The bottom surface of the spray pipe (213) is equipped with nozzles (202) arranged at equal intervals, and the nozzles (202) are located above the first mesh belt curtain (201). The liquid dispensing assembly includes an auxiliary agent dilution tank (209) and at least two material tanks. (211) A suction pump (212) is installed on the auxiliary agent dilution tank (209). The inlet end of the suction pump (212) is connected to the auxiliary agent dilution tank (209) through a pipe. The outlet end of the suction pump (212) is connected to the spray pipe (213) through a pipe. A metering pump (210) is installed on the material tank (211). The inlet end of the metering pump (210) is connected to the diluent tank (211) through a pipe. The outlet end of the metering pump (210) is connected to the auxiliary agent dilution tank (209) through a pipe.

4. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 3, characterized in that, The extrusion assembly includes two extrusion rollers (204) that rotate in opposite directions and have an extrusion space between them. A liquid collection tray (205) is provided below each of the two extrusion rollers (204) and is mounted on a second mesh belt curtain (206). The water circulation component includes at least one first negative pressure dehumidification pipe (203), a second negative pressure dehumidification pipe (207), and a purification structure. The first negative pressure dehumidification pipe (203) is located inside the first mesh belt curtain (201), and the second negative pressure dehumidification pipe (207) is located inside the second mesh belt curtain (206).

5. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 4, characterized in that, The purification components include an underground water tank (214), a fan (217), a gas-liquid separator (216), a sewage pump (218), and a filter tank (215). The bottom surfaces of the two liquid collection trays (205) are fixedly connected to return water pipes, and the end of the return water pipe away from the liquid collection tray (205) is fixedly connected to the underground water tank (214). The feed end of the gas-liquid separator (216) is connected to the first negative pressure dehumidification pipe (203) and the second negative pressure dehumidification pipe (207) through a pipe. The exhaust end of the gas-liquid separator (216) is fixedly connected to the air inlet end of the fan (217). The liquid discharge end of the gas-liquid separator (216) and the liquid discharge end of the underground water tank (214) are both fixedly connected to the water inlet end of the sewage pump (218). The liquid discharge end of the sewage pump (218) is fixedly connected to the liquid inlet end of the filter tank (215).

6. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The steaming machine (3) includes a casing, a conveying assembly and a circulating drying assembly. A partition is installed in the middle of the casing, which divides the casing into a circulating chamber and a drying chamber that are connected at the top and bottom. The conveying assembly includes at least two mesh belt conveyor structures (301) arranged in parallel along the vertical direction. The feeding directions of adjacent mesh belt conveyor structures (301) are opposite. The fabric is flipped over and falls into the lower mesh belt conveyor structure (301) and changes direction.

7. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 6, characterized in that, The circulating drying assembly includes a heater (307) installed in the circulating chamber, a dehumidifying fan (303) installed on the casing, and at least one circulating fan (302) installed on the casing. The air inlet of the circulating fan (302) is fixedly connected to a partition plate, and the air outlet of the circulating fan (302) is located in the circulating chamber. The air outlet of the circulating fan (302) is located above the heater (307). The heater (307) is fixedly connected to a steam inlet pipe (308) and a water outlet / return pipe (309). The upper surface of the housing is fixedly connected to a make-up air pipe (310), and the make-up air pipe (310) is connected to the drying chamber. The air inlet of the dehumidifying fan (303) is connected to the circulation chamber, and the connection is located between the exhaust end of the circulating fan (302) and the heater (307). The exhaust end of the dehumidifying fan (303) is fixedly connected to a three-way ventilation pipe (305). A swing valve (304) is installed in the three-way ventilation pipe (305). A preheating air pipe (306) is also fixedly connected to the three-way ventilation pipe (305).

8. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The air-cooled cooling machine (4) includes a second mesh belt structure and a blower, with the exhaust end of the blower located above the second mesh belt structure.

9. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The opening machine (5) consists of a cylinder, a feeding curtain, two feeding rollers and three carding rollers, and the cylinder, the two feeding rollers and the three carding rollers are all covered with metal needle cloth.

10. The waste nonwoven fabric recycling and fiber regeneration equipment according to claim 1, characterized in that, The feeding assembly includes a motor, a drive roller, a driven roller, and a conveyor belt. The output shaft of the motor is mounted on the drive roller, and the drive roller and the driven roller are connected by a conveyor belt.

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