Cotton blending and impurity removing device and method for spunlace non-woven fabric

Abstract

The invention discloses a cotton blending and impurity removing device and method for spunlace non-woven fabric, and belongs to the technical field of textile machinery, and the device comprises a multi-bin cotton blending machine main body, a cotton blending assembly, a conveying assembly, an impurity removing assembly and an integrated temperature and humidity regulation and control system. The innovative core of the system is that a vortex tube is adopted as a common cold and heat source of the system, and a cold end outlet and a hot end outlet of the vortex tube are thermally coupled with a water tank of the liquid constant-temperature assembly and a dehumidification unit of the humidity regulation and control assembly respectively, so that a gas-liquid double-loop coupling energy supply system is constructed; the liquid constant-temperature assembly is used for carrying out contact type temperature adjustment on fibers through a constant-temperature cotton feeding roller and a constant-temperature impurity removal roller; and the humidity regulation and control assembly realizes accurate humidity regulation through spray humidification and condensation dehumidification. According to the method, synchronous and distributed optimization regulation and control of the physical state of the fiber in the raw cotton mixing stage are achieved, the problems that a traditional process is high in energy consumption and extensive in regulation and control are solved, and the processing uniformity and cleanliness of the spunlace non-woven fabric raw materials are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology, and particularly relates to a cotton blending and impurity removal device and method for spunlace nonwoven fabrics. Background Technology

[0002] In the production of nonwoven fabrics, especially spunlace nonwoven fabrics, the cleanliness, openness, and uniformity of the physical state of the raw cotton fibers directly determine the uniformity of the final web and the strength of the product. In traditional processes, cotton blending, impurity removal, and temperature and humidity control are usually separate steps. Cotton blending is carried out in a multi-bin blending machine, mainly to solve the problem of uniform mixing of different batches of raw cotton; while temperature and humidity control relies on the regulation of the overall workshop environment or local adjustments in subsequent carding processes. This separate approach has significant drawbacks: First, the overall workshop environment regulation is energy-intensive and has low precision, making it difficult to finely adjust each batch, or even each bin, of raw cotton; second, the physical properties of the fibers (such as softness and moisture regain) are not optimized during the blending stage, affecting the efficiency of subsequent opening and impurity removal, and easily leading to fiber damage or impurity residue; finally, existing equipment lacks the ability to deeply integrate temperature and humidity regulation into the cotton blending process, making it impossible to achieve a synergistic process of "optimizing fiber state while blending".

[0003] Therefore, the industry urgently needs a device and method that can deeply integrate cotton blending, opening, impurity removal and refined temperature and humidity control to improve the product quality of spunlace nonwoven fabrics from the source of raw material processing. Based on the above reasons, this invention designs a cotton blending and impurity removal device and method for spunlace nonwoven fabrics. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art, and to propose a device and method for removing impurities from raw cotton blends.

[0005] This invention first discloses a cotton blending and impurity removal device for spunlace nonwoven fabrics, comprising a multi-compartment cotton blending machine body, a cotton blending component, a conveying component, and an impurity removal component. The main body of the multi-compartment cotton blending machine includes: Multiple parallel blending bins are used for blending and conveying raw cotton bin by bin. The outer shell is located at the bottom of the plurality of cotton mixing bins, and a cotton mixing area is provided in the outer shell. The cotton mixing assembly, the conveying assembly and the impurity removal assembly are all located in the cotton mixing area. The feed pipe and discharge pipe are used for the input and output of raw cotton, respectively; The device further includes: an integrated temperature and humidity control system, the system comprising: The liquid thermostatic component uses a water pump to introduce warm water from the water tank into the circulation pipeline and then outputs it to the cotton mixing component and the impurity removal component for temperature control. A humidity control assembly includes a humidification unit for spraying humidification onto a cotton blending area, and a dehumidification unit for condensing and dehumidifying humid air within the device. A gas-liquid coupling power supply component includes a vortex tube, wherein the cold end connector and the hot end connector of the vortex tube are simultaneously thermally coupled to the water tank and the dehumidification unit. The central controller is used to coordinate and control the operation of the liquid thermostat, humidification unit, dehumidification unit and vortex tube based on the temperature and humidity sensor signals of each area in the device.

[0006] In the above device, the cotton mixing component includes a constant temperature cotton feeding roller, which includes a main roller and two auxiliary rollers symmetrically arranged thereon. The surfaces of the main roller and the auxiliary rollers are provided with corner nails, and the inside of each roller is connected to a liquid flow pipe. The liquid flow pipe is configured as a spiral coil structure. The liquid thermostatic component is connected to the main roller and the auxiliary roller respectively through multiple rotary adapters. The three rotary adapters of the same feeding roller are connected to the circulating water pipe after being merged through a triangular tube.

[0007] In the above device, the humidification unit includes multiple atomizing nozzles, and its water supply pipeline is connected to the circulation pipeline to directly obtain constant temperature liquid from the pipeline as the humidification water source. The multiple atomizing nozzles are respectively arranged between every two adjacent constant temperature cotton feeding rollers.

[0008] In the above device, the dehumidification unit includes an airflow duct and a condensate collection pipe; the airflow duct is configured to guide the humid air in the cotton mixing area and the gas output from the cold end of the vortex tube to the heat exchange component for heat exchange, and the condensate collection pipe is used to collect and discharge condensed water droplets.

[0009] In the above-mentioned device, the liquid constant temperature component also includes an auxiliary heater, which is disposed in the water tank and connected to the central controller, for supplementing the heating of the circulating water when the eddy current tube is insufficient.

[0010] In the above-mentioned device, the impurity removal component includes a constant temperature impurity removal roller, which includes multiple adsorption slits connected to a negative pressure system and is composed of multiple gap rollers arranged circumferentially on the constant temperature impurity removal roller. Each gap roller has an elastic needle cloth on its surface for combing fibers.

[0011] In the above-mentioned device, a support is installed on the outside of the main body of the multi-compartment cotton blending machine, and a maintenance platform is provided on the support. The bottom of the maintenance platform is supported by multiple legs.

[0012] In the above-mentioned device, the conveying component is a mesh conveyor belt, which conveys from the feed end to the discharge end, and its end is connected to a horizontal curtain, the end of which is connected to the impurity removal component.

[0013] Secondly, the present invention provides a method for removing impurities from mixed cotton using the above-mentioned apparatus, comprising the following steps: S1: Raw cotton is fed into the main body of the multi-compartment blending machine through the feed pipe, so that it passes through multiple blending compartments in sequence, and is grabbed, loosened and mixed by the blending components below each blending compartment; S2: While the raw cotton input and bin-by-bin mixing steps are being performed, the following operations are performed: the vortex tube is activated, and the cold and heat generated therein are simultaneously supplied to the liquid thermostat and the dehumidification unit. S3: The constant temperature liquid is circulated and transported to the cotton blending component and the impurity removal mechanism through the liquid constant temperature component to regulate the temperature of the raw cotton fibers in contact. S4: Monitor the humidity of each cotton blending compartment through the central controller and control the humidification unit or dehumidification unit to maintain the set humidity environment in each compartment; S5: After mixing and temperature and humidity control, the raw cotton fibers are sent by the conveying component to the impurity removal mechanism for combing and impurity removal. Finally, the clean fibers are discharged through the discharge pipe.

[0014] In the above method, during the synchronous temperature and humidity control step, when the humidity in the cotton blending chamber is too low, the central controller prioritizes starting the humidification unit corresponding to the cotton blending chamber for spray humidification; when the humidity remains low, the auxiliary heater of the liquid constant temperature component is activated to increase the temperature of the circulating liquid, thereby improving the humidity holding capacity of the air in the chamber.

[0015] The beneficial effects of this invention are as follows: 1. The refined temperature and humidity control system of this invention is deeply integrated into the multi-compartment cotton blending machine. It optimizes the softness, strength and moisture regain of the fibers at the raw material mixing stage, laying an excellent physical foundation for subsequent impurity removal and web formation. In applications such as spunlace nonwoven fabrics where cotton material requirements are high, it reduces the number of processes and improves processing efficiency.

[0016] 2. This solution uses vortex tubes as the common heat source for the gas-liquid dual loop, replacing the independent chiller, heater and dehumidifier in the traditional solution. This greatly simplifies the system architecture, reduces equipment complexity and energy consumption, and is particularly suitable for deployment in textile workshops with limited space and energy.

[0017] 3. This invention achieves low fiber damage, and the opening and combing are carried out in a better temperature and humidity environment. The fibers are flexible and impurities are easy to remove. Combined with the precise design of the constant temperature impurity removal roller, a high impurity removal rate is achieved while minimizing fiber damage and short fiber generation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a cotton blending and impurity removal device for spunlace nonwoven fabric provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the main body of a multi-compartment cotton blending machine in a cotton blending and impurity removal device for spunlace nonwoven fabrics provided by the present invention.

[0020] Figure 3 This is a schematic diagram of the cotton mixing area in a cotton mixing and impurity removal device for spunlace nonwoven fabric provided by the present invention.

[0021] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0022] Figure 5 This invention provides a cotton blending component and a conveying component in a cotton blending and impurity removal device for spunlace nonwoven fabrics.

[0023] Figure 6 This is a schematic diagram of the impurity removal component in a cotton blending and impurity removal device for spunlace nonwoven fabric provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the liquid constant temperature component in a cotton blending and impurity removal device for spunlace nonwoven fabric provided by the present invention.

[0025] Figure 8 This is a schematic diagram of the humidification unit and vortex tube in a cotton blending and impurity removal device for spunlace nonwoven fabric provided by the present invention.

[0026] In the picture: 1. Main body of multi-compartment cotton blending machine; 101 cotton blending compartment; 102 outer shell; 103 cotton blending area; 104 feed pipe; 105 discharge pipe; 2. Blending assembly, 21. Thermostatic feeding roller, 22. Main roller, 23. Auxiliary roller, 24. Angle nail, 25. Liquid flow pipe; 3 Conveying assembly, 31 Bottom conveyor belt, 32 Horizontal curtain; 4. Impurity removal components, 41. Constant temperature impurity removal roller, 42. Adsorption slit, 43. Gap roller, 5. Liquid thermostatic assembly, 51. Circulation piping, 52. Water tank, 53. Triangular pipe, 54. Rotary adapter. 6 humidification units, 61 atomizing nozzles, 7. Dehumidification unit, 71. Airflow duct, 72. Condensate collection pipe, 73. Heat exchange components. 8. Vortex tube, 81. Cold end connector, 82. Hot end connector, 83. Main body; 9 supports, 91 maintenance platform, and 92 outriggers. Detailed Implementation

[0027] To facilitate understanding of this application and to make the aforementioned objectives, features, and advantages of this application more apparent, a detailed description of specific embodiments of this application is provided below in conjunction with the accompanying drawings. Numerous specific details are set forth in the following description to provide a thorough understanding of this application, and preferred embodiments are shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application. This application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. 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 is only for describing particular implementations and is not intended to limit the scope of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Reference Figures 1-8 A cotton blending and impurity removal device for spunlace nonwoven fabrics includes a multi-compartment cotton blending machine body 1, a cotton blending assembly 2, a conveying assembly 3, and an impurity removal assembly 4. The multi-compartment cotton blending machine body 1 includes: Multiple parallel cotton blending bins 101 are used for blending and conveying raw cotton bin by bin. The outer shell 102 is located at the bottom of multiple cotton mixing bins 101. A cotton mixing area 103 is provided in the outer shell 102. The cotton mixing component 2, the conveying component 3 and the impurity removal component 4 are all located in the cotton mixing area 103. The feed pipe 104 and the discharge pipe 105 are used for the input and discharge of raw cotton, respectively; The device also includes: an integrated temperature and humidity control system, which includes: The liquid thermostatic component 5 uses a water pump to introduce warm water from the water tank 52 into the circulation pipeline 51 and output it to the cotton mixing component 2 and the impurity removal component 4 for temperature control. The humidity control assembly includes a humidification unit 6 for spraying humidification on the cotton blending area and a dehumidification unit 7 for condensing and dehumidifying the humid air inside the device. The gas-liquid coupling power supply component includes a vortex tube 8, which includes a main body 83, a cold end connector 81 and a hot end connector 82. The cold end connector 81 and the hot end connector 82 are simultaneously thermally coupled to the water tank 52 and the dehumidification unit 7. The central controller is used to coordinate and control the operation of the liquid thermostat component 5, the humidification unit 6, the dehumidification unit 7 and the vortex tube 8 based on the temperature and humidity sensor signals of each area in the device.

[0029] Raw cotton is drawn into multiple parallel blending bins 101 of the main body 1 of the multi-bin blending machine through the feed pipe 104 by airflow. The bottom of the blending bin 101 is sealed by a sealed outer shell 102, forming a blending area 103.

[0030] In one feasible embodiment, a cotton blending assembly 2 is provided at the bottom of each cotton blending bin 101. In this embodiment, the cotton blending assembly 2 is a specially designed thermostatic cotton feeding roller 21. The cotton feeding roller 21 consists of a main roller 22 and two symmetrically inclined auxiliary rollers 23. All three rollers have corner nails 24 embedded on their surfaces for gripping and tearing the cotton layer. Crucially, the main roller 22 and auxiliary rollers 23 are all machined with annular or spiral liquid flow pipes 25 inside. The circulation pipe 51 of the thermostatic liquid assembly 5 is connected to the ports of these liquid flow pipes 25 through a high-temperature and high-pressure resistant rotary adapter 54. For each three-roller assembly, the three rotary adapters 54 converge through a stainless steel triangular tube 53 and then connect to the main circulation pipe 51. The circulation pipe 51 is connected to a water tank 52 equipped with an auxiliary heater (not labeled in the figure), and a water pump continuously circulates the circulating water inside the pipe, the water tank 52, and the thermostatic cotton feeding roller 21.

[0031] In one feasible embodiment, the present invention includes a vortex tube 8. The function of the vortex tube 8 is to allow compressed air to enter its main body 83, from which low-temperature gas is discharged from the cold end connector 81 and high-temperature gas is discharged from the hot end connector 82. The cold end connector 81 extends into the water in the water tank 52 via a coil or direct injection to cool the circulating water when the water tank 52 is at a high temperature. Simultaneously, a branch of the cold end connector 81 connects to the heat exchange component 73 of the dehumidification unit 7. The hot end connector 82 is directly connected to the water tank 52 to heat the circulating water when the water tank 52 is at a low temperature. By adjusting the air intake pressure and cold flow ratio of the vortex tube 8, the heating or cooling intensity of the water tank 52 can be controlled, thereby precisely controlling the circulating fluid temperature within a set range. The constant-temperature circulating water flows through the constant-temperature cotton roller 21, maintaining its surface at an optimal temperature. As the raw cotton is gripped and loosened by the corner nails, it receives gentle temperature regulation, achieving optimal fiber softness.

[0032] Regarding humidity control, ultrasonic atomizing nozzles 61 are installed between each constant-temperature cotton feeding roller 21, forming a humidification unit 6. The water supply pipe of the atomizing nozzle 61 is directly connected to the constant-temperature circulation pipeline 51, spraying water mist with the same surface temperature as the constant-temperature cotton feeding roller, achieving efficient humidification without temperature shock. In the upper space of the cotton blending area 103, a dehumidification unit 7 is installed, which includes an airflow duct 71, a condensate collection pipe 72, and a heat exchange component 73. When the humidity in the chamber is too high, the central controller activates the dehumidification mode: humid air is drawn into the airflow duct 71 by the fan, flows through the heat exchange component 73 connected to the cold end pipe 81 in the vortex tube 8, the temperature drops sharply, moisture condenses and drips into the condensate collection pipe 72 and is automatically discharged, and the dried and cooled air is then sent back to the cotton blending area.

[0033] The mixed and conditioned fiber clumps fall into the conveying assembly 3 below. In this embodiment, the conveying assembly 3 is a high-speed polyester mesh conveyor belt 31, whose end is fed evenly into the impurity removal assembly 4 via a horizontal curtain 32. The core of the impurity removal assembly 4 is a constant-temperature impurity removal roller 41, which is also filled with a constant-temperature liquid from the liquid constant-temperature assembly 5. The roller surface is composed of multiple circumferentially arranged gap rollers 43, and the roller surface is covered with elastic needle cloth to perform final flexible combing of the fibers. Adsorption slits 42 connected to the negative pressure system are formed between the gap rollers 43. During the combing process, the separated fine impurities are completely separated from the fibers under the action of centrifugal force and airflow. The clean fibers are finally output through the discharge pipe 105 and enter the next process.

[0034] Based on the above-described apparatus, the present invention also provides a method for removing impurities from mixed cotton, the process of which is as follows: Figure 6 As shown, the specific steps are as follows: S1: Raw cotton input and mixing in each bin: After being opened, the raw cotton is evenly distributed to multiple mixing bins 101 through the feed pipe 104, passes through each bin in sequence, and is grabbed, opened and mixed by the constant temperature feed roller 21 at the bottom of each bin.

[0035] S2: Synchronous Start Energy Coupling: While feeding, the central controller starts the vortex tube 8 and guides its cold and hot airflows to the water tank 52 according to the preset temperature, quickly adjusting the circulating liquid to the target temperature.

[0036] S3: Contact-type constant temperature control: The constant temperature liquid is pumped into all constant temperature cotton feed rollers 21 and constant temperature impurity removal rollers 41 through the circulation pipeline 51, so that their surface temperature is constant. The raw cotton fibers are always in contact with the constant temperature surface throughout the entire process of conveying, opening and carding, and their physical properties remain stable and consistent.

[0037] S4: The central controller compares the humidity sensor readings of each compartment with the set values. If the humidity of the cotton blending compartment 101 is too low, the corresponding atomizing nozzle 61 is immediately activated for isothermal spray humidification. If the humidity of all compartments is generally low and the adjustment is slow, the auxiliary heater is activated to increase the circulating liquid temperature, thereby increasing the saturated humidity of the air and enhancing the humidification capacity. If the humidity of a compartment is too high, the humidification of that compartment is turned off, and the dehumidification unit 7 is activated, using the cold end cooling capacity of the vortex tube 8 to condense and dehumidify the air inside the compartment.

[0038] S5: The fibers, after being fully mixed and optimally temperature and humidity controlled, are fed into the constant temperature impurity removal roller 41 by the conveying component 3. Under flexible carding and negative pressure adsorption, the final purification is completed, and the clean fibers are output through the discharge pipe 105.

[0039] Through the above-mentioned device and method, the present invention realizes the intelligentization, refinement and integration of the cotton blending and impurity removal process, which significantly improves the processing quality and efficiency of spunlace nonwoven fabric raw materials.

[0040] The central controller collects temperature and humidity sensor data in each cotton blending chamber 101 in real time. Through the built-in PLC program, it independently controls the opening and closing frequency of the atomizing nozzle 61 in each chamber, the speed of the dehumidification unit 7 fan, and uniformly regulates the operation status of the vortex tube 8 and the start and stop of the auxiliary heater in the water tank 52 to ensure that the entire cotton blending process is carried out within the preset optimal process window.

[0041] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A cotton blending and impurity removal device for spunlace nonwoven fabrics, comprising a multi-compartment cotton blending machine body (1), a cotton blending assembly (2), a conveying assembly (3), and an impurity removal assembly (4), characterized in that, The main body (1) of the multi-compartment cotton blending machine includes: Multiple parallel cotton blending bins (101) are used for blending and conveying raw cotton bin by bin. The outer shell (102) is located at the bottom of the plurality of cotton mixing bins (101), and a cotton mixing area (103) is provided in the outer shell (102). The cotton mixing component (2), the conveying component (3) and the impurity removal component (4) are all provided in the cotton mixing area (103). The feed pipe (104) and the discharge pipe (105) are used for the input and discharge of raw cotton, respectively; The device further includes: an integrated temperature and humidity control system, the system comprising: The liquid thermostat component (5) introduces warm water from the water tank (52) into the circulation pipeline (51) via a water pump and outputs it to the cotton mixing component (2) and the impurity removal component (4) for temperature control. The humidity control assembly includes a humidification unit (6) for spraying humidification on the cotton blending area and a dehumidification unit (7) for condensing and dehumidifying the humid air inside the device. The gas-liquid coupling power supply component includes a vortex tube (8), which includes a cold end connector (81), a hot end connector (82) and a main body (83). The cold end connector (81) and the hot end connector (82) are thermally coupled to the water tank (52) and the dehumidification unit (7). The central controller is used to coordinate and control the operation of the liquid thermostat (5), humidification unit (6), dehumidification unit (7) and vortex tube (8) based on the temperature and humidity sensor signals of each area in the device.

2. The apparatus according to claim 1, characterized in that, The cotton mixing assembly (2) includes a constant temperature cotton feeding roller (21), which includes a main roller (22) and two auxiliary rollers (23) symmetrically arranged thereon. The surfaces of the main roller (22) and the auxiliary rollers (23) are provided with corner nails (24), and the liquid flow pipes are opened inside them. The liquid constant temperature component (5) is connected to the main roller (22) and the auxiliary roller (23) respectively through multiple rotary adapters (54). The three rotary adapters (54) of the same cotton feeding roller (21) are connected to the circulating water pipe (51) after converging through a triangular tube (53).

3. The apparatus according to claim 1, characterized in that, The humidification unit (6) includes multiple atomizing nozzles (61), whose water supply pipeline is connected to the circulation pipeline (51) to directly obtain constant temperature liquid from the pipeline as a humidification water source. The multiple atomizing nozzles (61) are respectively arranged between every two adjacent constant temperature cotton feeding rollers (21).

4. The apparatus according to claim 1 or 2, characterized in that, The dehumidification unit (7) includes an airflow duct (71) and a condensate collection pipe (72); the airflow duct (71) is configured to guide the humid air in the cotton blending area (103) and the gas output from the cold end connector (81) of the vortex tube (8) to the heat exchange component (73) for heat exchange; the condensate collection pipe (72) is used to collect condensed water droplets and discharge them.

5. The apparatus according to claim 1, characterized in that, The liquid thermostat assembly also includes an auxiliary heater, which is located in the water tank (52) and connected to the central controller, for supplementing the heating of the circulating water when the vortex tube (6) is insufficient.

6. The apparatus according to claim 1, characterized in that, The impurity removal component (4) includes a constant temperature impurity removal roller (41), which includes multiple adsorption slits (42) connected to the negative pressure system and is composed of multiple gap rollers (43) arranged circumferentially on the constant temperature impurity removal roller (41). Each gap roller (43) is provided with elastic needle cloth on its surface for combing fibers.

7. The apparatus according to claim 1, characterized in that, A bracket (9) is installed on the outside of the main body (1) of the multi-compartment cotton blending machine. A maintenance platform (91) is provided on the bracket (9). The bottom of the maintenance platform (91) is supported by multiple legs (92).

8. The apparatus according to claim 1, characterized in that, The conveying assembly (3) is a mesh conveyor belt (31) with its conveying direction from the feed pipe (104) toward the discharge pipe (105) and its end is connected to a horizontal curtain (32), the end of which is connected to the impurity removal assembly (4).

9. A method for removing impurities from mixed cotton using the apparatus described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Raw cotton is fed into the main body (1) of the multi-compartment cotton blender through the feed pipe (104), so that it passes through multiple cotton blending compartments (101) in sequence, and is grabbed, loosened and mixed by the cotton blending component (2) below each cotton blending compartment (101); S2: While the raw cotton input and bin-by-bin mixing steps are being carried out, the following operations are performed: the vortex tube (8) is activated, and the cold and heat generated therefrom are simultaneously supplied to the liquid thermostat (5) and the dehumidification unit (7). S3: The constant temperature liquid is circulated and transported to the cotton blending component (2) and the impurity removal mechanism (4) through the liquid constant temperature component (5) to regulate the contact temperature of the raw cotton fibers. S4: Monitor the humidity of each cotton blending compartment through the central controller and control the humidification unit (6) or dehumidification unit (7) to maintain the set humidity environment in each compartment; S5: The raw cotton fibers after mixing and temperature and humidity control are sent by the conveying component (3) to the impurity removal mechanism (4) for combing and impurity removal, and finally the clean fibers are discharged through the discharge pipe (105).

10. According to the method of claim 9, in the synchronous temperature and humidity control step, when the humidity in the cotton blending chamber (101) is too low, the central controller first starts the humidification unit (6) corresponding to the cotton blending chamber (101) for spray humidification; when the humidity continues to be low, the auxiliary heater of the liquid constant temperature component (5) is used to increase the temperature of the circulating liquid, thereby improving the humidity holding capacity of the air in the chamber.

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