Textile waste conveying system and cloth recycling equipment

Abstract

The invention provides a textile waste conveying system and cloth recycling equipment, the textile waste conveying system is suitable for conveying cloth to a reaction kettle, and the textile waste conveying system comprises a crushing treatment assembly which is provided with a crushing discharge port and is suitable for outputting crushed textile materials; the solid-liquid mixing container is provided with a feeding hopper, a pressure air inlet and a stirring device, the feeding hopper is suitable for receiving the crushed textile materials output from the crushing discharging opening, and the stirring device is suitable for stirring solid-liquid mixed materials in the solid-liquid mixing container; and the pressure conveying device is connected with the pressure gas inlet and is suitable for conveying pressure gas into the solid-liquid mixing container so as to convey the distributed solid-liquid mixture to the reaction kettle. The textile waste conveying system integrates crushing, mixing and pressure conveying, and has high efficiency, safety and environment friendliness.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile waste treatment, and particularly relates to a textile waste conveying system and cloth recycling equipment. BACKGROUND

[0002] In the chemical recycling process of waste textiles, raw materials such as cloth need to be fed into a reaction kettle for depolymerization under the action of high-temperature ethylene glycol. Due to the characteristics of cloth such as easy entanglement and low bulk density, it is currently impossible to directly convey cloth into the reaction kettle by mechanical means.

[0003] In related technologies, some processes are to make cloth into semi-molten granular material, and then convey it by air conveying. This method has the disadvantages of high energy consumption, serious pollution and low efficiency, and needs to be optimized in terms of conveying method. SUMMARY

[0004] Therefore, the present application provides a textile waste conveying system to solve the problem of high energy consumption, serious pollution and low efficiency caused by making cloth into granular material and then air conveying in the prior art.

[0005] In one aspect, the present application provides a textile waste conveying system suitable for conveying cloth to a reaction kettle. The textile waste conveying system comprises: a crushing treatment assembly provided with a crushing discharge port and suitable for outputting crushed textile material; a solid-liquid mixing container provided with a feeding hopper, a pressure air inlet and a stirring device, the feeding hopper being suitable for receiving the crushed textile material output from the crushing discharge port, and the stirring device being suitable for stirring the solid-liquid mixed material in the solid-liquid mixing container; and a pressure conveying device connected with the pressure air inlet and suitable for conveying pressure gas into the solid-liquid mixing container to convey the solid-liquid mixture of cloth to the reaction kettle.

[0006] In an alternative embodiment, the inside of the feeding hopper is provided with a compression device to compress the crushed textile material entering the feeding hopper, and the bottom of the feeding hopper is provided with a feeding valve to feed the solid-liquid mixing container when the feeding valve is opened.

[0007] In an alternative embodiment, the textile waste conveying system further comprises an anti-oxidation device connected with the solid-liquid mixing container, so that the air concentration in the solid-liquid mixing container is not greater than a preset value range after the solid-liquid mixing container is fully fed.

[0008] In an alternative embodiment, the side wall of the reactor is provided with a reflux pipeline, the reflux pipeline is provided with at least two reflux valves in parallel, the solid-liquid mixing container is provided as at least two, the side wall of each of the two solid-liquid mixing containers is connected with a reflux branch, and each of the reflux branches corresponds to one of the reflux valves, so that the liquid in the reactor is refluxed into one of the solid-liquid mixing containers.

[0009] In an alternative embodiment, the pressure conveying device comprises a high-pressure nitrogen gas storage tank, and the textile waste conveying system further comprises an air compressor connected with the high-pressure nitrogen gas storage tank, so as to open the reflux valve and recycle the nitrogen gas in the solid-liquid mixing container into the high-pressure nitrogen gas storage tank.

[0010] In an alternative embodiment, the textile waste conveying system further comprises a material conveying pipeline, one end of the material conveying pipeline is connected to the discharge port of the solid-liquid mixing container, the other end of the material conveying pipeline is connected to the reactor feed port, and the material conveying pipeline is provided with a jacket to preheat the fluid in the material conveying pipeline.

[0011] In an alternative embodiment, the crushing treatment assembly comprises at least one crusher.

[0012] In an alternative embodiment, the textile waste conveying system further comprises a belt conveyor arranged between the crushing treatment assembly and the solid-liquid mixing container and adapted to convey the crushed textile material, and a metal adsorption mechanism arranged above the belt conveyor.

[0013] In another aspect, the application further provides a cloth recycling device, comprising a reactor and the textile waste conveying system according to any one of the above embodiments, the textile waste conveying system being adapted to convey the solid-liquid mixed and crushed textile material to the reactor.

[0014] In an alternative embodiment, the reactor is provided with a reactor feed port, and a solid-liquid separation device is arranged below the reactor feed port.

[0015] The textile waste conveying system has the advantages of high efficiency, safety and environmental protection, and is suitable for solid-liquid reaction material pretreatment and conveying scenes in the fields of textile, chemical industry and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of a textile waste conveying system according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the reactor in a textile waste conveying system according to an embodiment of the present invention.

[0019] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure.

[0020] Explanation of reference numerals in the attached figures: 1. Primary crusher; 2. Secondary crusher; 3. Belt conveyor; 4. Metal adsorption mechanism; 5. Feed hopper; 6. Compression device; 7. Feed valve; 8. First solid-liquid mixing container; 9. Second solid-liquid mixing container; 10. Stirring device; 11. Nitrogen purging inlet valve; 12. Nitrogen pressurization inlet valve; 13. Vent valve; 14. Discharge valve; 15. High-pressure nitrogen storage tank; 16. Air compressor; 17. Conveying pipeline; 18. Reactor; 19. Solid-liquid separation device; 20. Return pipeline; 21. Return valve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] The following is combined Figure 1 and Figure 3 The following describes embodiments of the present invention.

[0026] like Figure 1 and Figure 2 As shown, according to an embodiment of the invention, a textile waste conveying system is provided, comprising: a crushing and processing component having a crushing outlet suitable for outputting crushed textile materials; a solid-liquid mixing container having a feed hopper 5, a pressure air inlet, and a stirring device 10, wherein the feed hopper 5 is suitable for receiving the crushed textile materials output from the crushing outlet, and the stirring device 10 is suitable for stirring the solid-liquid mixture in the solid-liquid mixing container; and a pressure conveying device connected to the pressure air inlet, suitable for conveying pressurized gas into the solid-liquid mixing container to convey the solid-liquid mixture of the fabric to a reaction vessel 18.

[0027] In this embodiment, the textile waste conveying system mainly includes: a crushing and processing component, a solid-liquid mixing container, and a pressure conveying device. Textile waste can be, for example, textile scraps or old clothes. The textile waste enters the crushing and processing component for crushing to obtain crushed textile material. The crushed textile material enters the solid-liquid mixing container through the feed hopper 5, where it is stirred by the stirring device 10 until uniformly mixed. Then, the solid-liquid mixture is conveyed to the reaction vessel 18 via the pressure conveying device.

[0028] The mixing device 10 can be a double-layer paddle mixer, with a propeller-type paddle on the upper layer and a turbine-type paddle on the lower layer, which takes into account both shear force and circulating flow, thereby improving the mixing effect. The mixing device 10 is used to mix the crushed cloth and liquid in proportion, and to disperse and homogenize them.

[0029] In a solid-liquid mixing container, the shredded textile material is mixed with a liquid, such as ethylene glycol, and stirred uniformly by a stirring device 10. This mixing process helps improve the efficiency of the chemical reaction and ensures that the material is fully depolymerized under high temperature and chemical reagents.

[0030] The stirring device 10, combined with gas injection, significantly increases the solid-liquid contact area, thereby improving mixing uniformity and providing an ideal material state for subsequent reactions within the reactor 18. The pressure conveying device can deliver inert gases, such as nitrogen, and, with pressure adaptive control technology, ensures stable material delivery to the reactor 18, improving conveying efficiency.

[0031] A discharge valve 14 is provided at the bottom of the solid-liquid mixing container. By opening the discharge valve 14, the material can be fed into the reaction vessel 18.

[0032] This textile waste conveying system integrates crushing, mixing, and pressure conveying, solving the problems of high energy consumption, high pollution, and low efficiency in traditional fabric processing. It is highly efficient, safe, and environmentally friendly, and is suitable for the pretreatment and conveying of solid and liquid reactive materials in the textile, chemical, and environmental protection fields.

[0033] Furthermore, the inside of the feed hopper 5 is equipped with a compression device 6 to compress the broken textile material entering the feed hopper 5, and the bottom of the feed hopper 5 is equipped with a feed valve 7 to feed material into the solid-liquid mixing container when the feed valve 7 is opened.

[0034] Because the fabric has a low bulk density, it is not conducive to the material entering the solid-liquid mixing container. Therefore, a compression device 6 is installed at the bottom of the feed hopper 5 to compress the crushed textile material, for example, to a density ≥0.3 g / cm³. The compressed material is more compact and can be conveyed to the solid-liquid mixing container more quickly. This reduces material loss and leakage during transportation, improves material utilization, and increases material conveying efficiency and processing speed. Therefore, the compression device 6 inside the feed hopper 5 compresses the incoming crushed textile material, helping to reduce its volume, assisting feeding, and making it easier to manage and transport.

[0035] When the feed valve 7 opens, the compressed material is released and enters the solid-liquid mixing container for the next solid-liquid mixing process. The opening and closing of the feed valve 7 can be controlled by an automated control system to achieve precise material delivery and process control.

[0036] Furthermore, the textile waste conveying system also includes an anti-oxidation device, which is connected to the solid-liquid mixing container so that the air concentration inside the solid-liquid mixing container does not exceed a preset value range after the material has been fed into the container.

[0037] In this embodiment, the anti-oxidation device includes a nitrogen pipeline and an venting pipeline, which are respectively connected to a solid-liquid mixing container. The nitrogen pipeline is equipped with a nitrogen purging inlet valve 11 to fill the solid-liquid mixing container with nitrogen, and the venting pipeline is equipped with a venting valve 13 to discharge air from the solid-liquid mixing container. The solid-liquid mixing container is also equipped with a detection sensor to detect the air concentration inside the container. After the solid-liquid mixing container has finished feeding, the feed valve 7 can be closed, and the nitrogen purging inlet valve 11 and the venting valve 13 can be opened to perform nitrogen purging. Once the air concentration inside the solid-liquid mixing container meets the requirements, i.e., the air concentration is not greater than a preset value range, the venting valve 13 and the nitrogen purging inlet valve 11 are closed.

[0038] In addition, a nitrogen pipeline is connected to reactor 18 to introduce nitrogen into reactor 18.

[0039] Furthermore, the side wall of the reactor 18 is provided with a reflux pipe 20, and the reflux pipe 20 is provided with at least two reflux valves 21 in parallel. At least two solid-liquid mixing containers are provided, and the side walls of the two solid-liquid mixing containers are connected with reflux branches. Each reflux branch corresponds to a reflux valve 21, so that the liquid in the reactor 18 flows back into one of the solid-liquid mixing containers.

[0040] In this embodiment, two solid-liquid mixing containers are provided: a first solid-liquid mixing container 8 and a second solid-liquid mixing container 9. The two containers have the same structure and serve as backups for each other. When one container is used to mix the fabric and the liquid, the other container is used to receive the liquid returning from the reactor 18.

[0041] Specifically, a first reflux valve 21 and a second reflux valve 21 are connected in parallel on the reflux pipeline 20. The first reflux valve 21 is connected to the first reflux branch, and the second reflux valve 21 is connected to the second reflux branch. The two reflux valves 21 are set one-to-one with the two reflux branches. If the first solid-liquid mixing container 8 is used to mix the cloth and the liquid, the liquid in the reactor 18 will flow back to the second solid-liquid mixing container 9 through the reflux pipeline 20, the second reflux valve 21 and the second reflux branch, and vice versa. This will not be elaborated further here.

[0042] Furthermore, the pressure conveying device includes a high-pressure nitrogen storage tank 15, and the textile waste conveying system also includes an air compressor 16. The air compressor 16 is connected to the high-pressure nitrogen storage tank 15. After the material is conveyed, the discharge valve 14 is closed, the nitrogen pressure boosting inlet valve 12 is kept open, and the air compressor 16 is turned on to recover the nitrogen in the solid-liquid mixing container into the high-pressure nitrogen storage tank 15.

[0043] The pressure conveying device includes a high-pressure nitrogen storage tank 15, a nitrogen pipeline, and a nitrogen pressure boosting inlet valve 12. The high-pressure nitrogen storage tank 15 stores high-pressure nitrogen and has a nitrogen outlet. One end of the nitrogen pipeline is connected to the nitrogen outlet, and the other end is connected to a solid-liquid mixing container. The nitrogen pressure boosting inlet valve 12 is located on the nitrogen pipeline. When the nitrogen pressure boosting inlet valve 12 is opened, nitrogen flows from the high-pressure nitrogen storage tank 15 through the nitrogen pipeline into the solid-liquid mixing container. The pressure inside the container rises to 0.6 MPa. Then, the discharge valve 14 is opened, and the solid-liquid mixture is conveyed to the reaction vessel 18 through the conveying pipeline.

[0044] Air compressor 16 is connected to high-pressure nitrogen storage tank 15, and its function is to provide the necessary pressure to deliver nitrogen to various parts of the system. Air compressor 16 can be electrically or diesel driven.

[0045] After the material in the solid-liquid mixing container has been conveyed, close the discharge valve 14 and keep the nitrogen pressure boosting inlet valve 12 open. At this time, there is still a certain pressure of nitrogen in the solid-liquid mixing container. Start the air compressor 16, filter the nitrogen in the mixing container, and then pump it to the high-pressure nitrogen storage tank 15 to complete one cycle.

[0046] By recycling and reusing nitrogen, the system reduces the demand for new nitrogen, thereby lowering raw material costs and energy consumption, improving the efficiency of the entire conveying system, making the production process more continuous and stable, reducing nitrogen consumption and improving resource utilization, which helps to reduce overall operating costs and improve economic benefits.

[0047] Furthermore, the textile waste conveying system also includes a conveying pipe 17, one end of which is connected to the outlet of the solid-liquid mixing container, and the other end of which is connected to the inlet of the reactor 18. The conveying pipe 17 is fitted with a jacket to preheat the fluid inside the conveying pipe 17.

[0048] The conveying pipeline is equipped with a jacket, which utilizes the waste heat of the main unit to preheat the conveying fluid, thereby increasing the temperature of the material entering the reactor 18. Jacket preheating ensures that the material reaches the required temperature before entering the reactor 18, reducing the energy required for heating within the reactor 18 and thus improving the overall system's energy efficiency.

[0049] Furthermore, the crushing and processing assembly includes at least one crusher.

[0050] In this embodiment, the crushing and processing component includes a primary crusher 1 and a secondary crusher 2. Waste clothing, fabrics, etc., are first coarsely crushed by the primary crusher 1, and the particle size after crushing is about 10cm to 15cm. Then, they are finely crushed by the secondary crusher 2, at which point the particle size is ≤5cm.

[0051] Furthermore, the textile waste conveying system also includes: a belt conveyor 3, located between the crushing and processing component and the solid-liquid mixing container, suitable for conveying crushed textile materials; and a metal adsorption mechanism 4, located above the belt conveyor 3.

[0052] The crushed textile material obtained after being crushed by the crushing processing component is conveyed to the feed hopper 5 by the belt conveyor 3. Above the belt conveyor 3 is a metal adsorption mechanism 4, such as an iron removal device, which can remove metal impurities from the fabric.

[0053] The present invention also provides a fabric recycling device, comprising: a reaction vessel 18; and a textile waste conveying system of any one of the present invention, the textile waste conveying system being adapted to convey solid-liquid mixed crushed textile materials to the reaction vessel 18.

[0054] The fabric recycling equipment uses a textile waste conveying system to transport textile waste to the reaction vessel 18 after crushing and solid-liquid mixing, which improves the recycling quality and efficiency of the fabric recycling equipment and enhances the overall economic benefits.

[0055] Furthermore, the reactor 18 is provided with a reactor 18 inlet, and a solid-liquid separation device 19 is provided below the reactor 18 inlet. Specifically, the solid-liquid separation device 19 is a liquid collection tray.

[0056] like Figure 1 and Figure 3 As shown, the liquid enters the liquid collection tray after separation and flows back to the second solid-liquid mixing container 9 through the return pipe fitting, while the solid material falls to the bottom of the reactor 18.

[0057] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation.

[0058] For those skilled in the art, various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this invention.

Claims

1. A textile waste conveying system, suitable for conveying fabric to a reaction vessel, characterized in that, The textile waste conveying system includes: The crushing and processing unit is equipped with a crushing discharge port, which is suitable for outputting crushed textile materials; A solid-liquid mixing container is provided with a feed hopper, a pressure air inlet and a stirring device. The feed hopper is adapted to receive the crushed textile material output from the crushed discharge port, and the stirring device is adapted to stir the solid-liquid mixture in the solid-liquid mixing container. A pressure conveying device, connected to the pressure inlet, is adapted to deliver pressurized gas into the solid-liquid mixing container to convey the solid-liquid mixture of the fabric to the reaction vessel.

2. The textile waste conveying system according to claim 1, characterized in that, The feed hopper is equipped with a compression device to compress the broken textile material entering the feed hopper. The bottom of the feed hopper is equipped with a feed valve to feed material into the solid-liquid mixing container when the feed valve is opened.

3. The textile waste conveying system according to claim 1, characterized in that, It also includes an anti-oxidation device, which is connected to the solid-liquid mixing container so that the air concentration in the solid-liquid mixing container does not exceed a preset value range after the solid-liquid mixing container has finished feeding.

4. The textile waste conveying system according to any one of claims 1 to 3, characterized in that, The side wall of the reactor is provided with a reflux pipeline, and at least two reflux valves are connected in parallel to the reflux pipeline. At least two solid-liquid mixing containers are provided, and the side walls of the two solid-liquid mixing containers are connected with reflux branches. Each reflux branch corresponds to one reflux valve, so that the liquid in the reactor flows back into one of the solid-liquid mixing containers.

5. The textile waste conveying system according to claim 4, characterized in that, The pressure conveying device includes a high-pressure nitrogen storage tank, and the textile waste conveying system also includes an air compressor. The air compressor is connected to the high-pressure nitrogen storage tank to open the reflux valve to recover the nitrogen in the solid-liquid mixing container into the high-pressure nitrogen storage tank.

6. The textile waste conveying system according to any one of claims 1 to 3, characterized in that, It also includes a conveying pipe, one end of which is connected to the outlet of the solid-liquid mixing container, and the other end of which is connected to the inlet of the reactor. The conveying pipe is fitted with a jacket to preheat the fluid inside the conveying pipe.

7. The textile waste conveying system according to any one of claims 1 to 3, characterized in that, The crushing and processing assembly includes at least one crusher.

8. The textile waste conveying system according to any one of claims 1 to 3, characterized in that, Also includes: A belt conveyor is provided between the crushing and processing component and the solid-liquid mixing container, and is suitable for conveying the crushed textile material; A metal adsorption mechanism is located above the belt conveyor.

9. A fabric recycling device, characterized in that, include: Reactor; The textile waste conveying system according to any one of claims 1 to 8, wherein the textile waste conveying system is adapted to convey solid-liquid mixed crushed textile materials to the reactor.

10. A fabric recycling device according to claim 9, characterized in that, The reactor is provided with a reactor inlet, and a solid-liquid separation device is provided below the reactor inlet.

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