Fabric fiber separation device for recycled-cotton production

Abstract

A fabric fiber separation device for recycled-cotton production, comprising a housing, and a feeding port, a fiber outlet and a fabric outlet on the housing, wherein the housing comprises a volute (2) and a collection hopper (3); the feeding port is provided on one side of the volute (2), and a starting end of a spiral channel in the volute (2) is connected to the feeding port; a tail end of the spiral channel is located in the middle of the volute (2), and the middle of the volute (2) runs through vertically; a top opening in the middle of the volute (2) is the fiber outlet, and the fiber outlet is in communication with a negative-pressure cotton conveying pipeline (8); an opening at the bottom of the volute (2) is in communication with an upper port of the collection hopper (3); and a lower port of the collection hopper (3) is the fabric outlet.

Description

Cloth fiber separation device for recycled cotton production Technical Field

[0001] The invention belongs to the technical field of textile machinery manufacturing, in particular to a cloth fiber separation device for regenerated cotton production. Background Art

[0002] Waste textiles refer to textile materials and their products discarded during production and use, including both waste and used textiles. Waste textiles refer to waste generated during the production and processing of textile materials and their products; used textiles refer to discarded textile products, including clothing, household textiles, industrial textiles, and other textile products. In recent years, with the accelerated pace of my country's transformation of its development model and the introduction of various national policies promoting the comprehensive utilization of waste textiles, the comprehensive utilization industry has grown in scale, with technological breakthroughs and gradually demonstrating significant resource and environmental benefits.

[0003] Physical opening is currently the main method for recycling waste textiles. The physical opening method uses mechanical processing to cut, tear, open, comb and other physical processes on waste textiles, and directly process them into regenerated fibers or regenerated cotton.

[0004] The current recycled cotton production process involves repeatedly opening rags or yarn waste through 6-10 opening machines to convert them back into fibers. The resulting product may be a mixture of rags and fibers, requiring further opening to break down the rags. During the opening process, the fibers are repeatedly pulled and beaten, resulting in a generally low average fiber length and poor tensile properties. This average fiber length continues to decrease with increasing opening cycles, reducing the spinnability of the recycled cotton raw material and making the resulting regenerated cotton yarn insufficiently strong for use.

[0005] A Chinese patent application titled "Fiber Separation Device for Rags for Fiber Regeneration" (Application No. 202221314106.5) discloses a utility model patent. This patent utilizes a cloth slide to separate rags from fibers. The principle is that the raw material slows down after passing through the cloth slide, and the difference in specific gravity between the fibers and rags is utilized to separate the fibers and rags through positive pressure, facilitating subsequent fiber combing and spinning. This patented technology avoids repeated fiber opening that damages the fiber's physical properties. However, this patent still has the following problems:

[0006] 1. The rag fiber separation device for fiber regeneration has a horizontal structure, and the raw material path is set horizontally. It is large in size and occupies a large area, which is not suitable for installation and use in a small space; 2. The degree of automation and production efficiency are low.

[0007] The present invention aims to solve the above-mentioned problem by designing a cloth fiber separation device for recycled cotton production that can completely separate the opened cloth rags from the fibers, achieve high production efficiency and automation, and possess a compact structure and a small footprint. This is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] In order to solve the problems and shortcomings of the prior art, the present invention provides a cloth fiber separation device for recycled cotton production, which is convenient for completely separating the loosened rags and fibers, has high production efficiency and automation, and has a compact structure and small footprint.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] A cloth fiber separation device for regenerated cotton production, comprising a casing, a feed port, a fiber outlet and a cloth outlet on the casing, characterized in that the casing comprises a volute and a collecting hopper, one side of the volute is the feed port, the starting end of the spiral channel in the volute is connected to the feed port, the end of the spiral channel is located in the middle of the volute, the middle of the volute is connected up and down, the top opening in the middle of the volute is the fiber outlet, the fiber outlet is connected to a negative pressure cotton conveying pipeline, the opening at the bottom of the volute is connected to the upper port of the collecting hopper, and the lower port of the collecting hopper is the cloth outlet.

[0011] Improvement on the above technical solution: A negative pressure fan is provided on the negative pressure cotton conveying pipeline, and the negative pressure fan is connected to the control system to form an airflow for conveying the regenerated fibers.

[0012] Further improvement to the above technical solution: the feed port on the volute is square, the cross-section of the spiral channel is square, and the feed port is connected to a square-to-circular pipe; the fiber outlet at the middle top of the volute is circular, and the negative pressure cotton conveying pipe is a circular pipe.

[0013] Further improvement of the above technical solution: the collecting hopper includes a cylindrical shell and an upper funnel and a lower funnel inside the cylindrical shell, the outlet of the lower end of the upper funnel is aligned with the upper port of the lower funnel, the outlet of the lower end of the lower funnel serves as the cloth outlet, an openable upper plug plate is provided at the outlet of the upper funnel, and an openable lower plug plate is provided at the outlet of the lower funnel, a cloth accommodating chamber is formed between the upper funnel and the lower funnel inside the cylindrical shell, and a downward extending bracket is provided on the side wall of the cloth accommodating chamber.

[0014] Further improvement to the above technical solution: a transparent window is provided on the side wall of the cloth accommodating cavity.

[0015] Further improvement to the above technical solution: a photoelectric detection device or an image detection device is provided in the cloth accommodating cavity for detecting or observing the storage status of the cloth in the cloth accommodating cavity, and the photoelectric detection device or the image detection device is connected to the control system.

[0016] Further improvement to the above technical solution: the upper plugboard and the lower plugboard are respectively connected to the electric telescopic rod, and the control end of the electric telescopic rod is connected to the control system.

[0017] The advantages and positive effects of the present invention compared with the prior art are:

[0018] 1. The present invention uses the negative pressure generated by the duct fan to draw the cloth-fiber mixture into the separation device. The centrifugal force generated by the volute structure and the different densities of the cloth and fibers are used to separate the cloth from the fibers. This prevents entanglement between the fibers and improves the separation effect. The separation of fibers from the cloth is achieved through negative pressure suction, without causing secondary damage to the regenerated fibers, thereby improving product quality.

[0019] 2. The present invention also has the advantage of small footprint and is suitable for small spaces.

[0020] 3. The present invention controls the negative pressure motor, upper plug-in board, lower plug-in board, photoelectric detection device or image detection device through a control system, which is convenient for automatic adjustment according to the operating conditions and has a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of a cloth fiber separation device for regenerated cotton production according to the present invention;

[0022] FIG2 is a partial transverse cross-sectional view of a volute portion of a cloth fiber separation device for regenerated cotton production according to the present invention;

[0023] FIG3 is a bottom schematic diagram of a volute portion of a cloth fiber separation device for regenerated cotton production according to the present invention;

[0024] FIG4 is a longitudinal cross-sectional view of a cloth fiber separation device for regenerated cotton production according to the present invention.

[0025] The numbers in the figure are: 1. Square-to-circular pipe; 2. Volute; 3. Collecting bucket; 4. Upper plug-in plate; 5. Bracket; 6. Transparent window; 7. Fan; 8. Negative pressure cotton conveying pipe; 9. Lower plug-in plate; 10. Lower funnel; 11. Upper funnel. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings:

[0027] Referring to Figures 1-4, an embodiment of a cloth fiber separation device for recycled cotton production according to the present invention comprises a housing, a feed inlet, a fiber outlet, and a cloth outlet on the housing. The housing includes a volute 2 and a collection hopper 3. The feed inlet is located on one side of the volute 2. The starting end of a spiral channel within the volute 2 is connected to the feed inlet, and the end of the spiral channel is located in the middle of the volute, which is connected from top to bottom. The top opening in the middle of the volute 2 serves as the fiber outlet, which is connected to a negative pressure cotton conveying pipe 8. The bottom opening of the volute 2 is connected to the upper end of the collection hopper, and the lower end of the collection hopper serves as the cloth outlet.

[0028] Furthermore, a negative pressure blower 7 is provided on the negative pressure cotton conveying duct 8, which is connected to a control system and is used to generate an airflow for conveying the regenerated fibers. Alternatively, the negative pressure blower 7 may not be separately provided, and the negative pressure cotton conveying duct 8 may be directly connected in series to the cotton conveying duct of the production line itself, provided that the internal pressure of the cloth fiber separation device is maintained.

[0029] Furthermore, the feed port on the volute 2 is square, the cross section of the spiral channel is square, and the feed port is connected to a square-to-circular pipe 1; the fiber outlet at the middle top of the volute 2 is circular, and the negative pressure cotton conveying pipe 8 is a circular pipe.

[0030] Specifically, the collecting hopper 3 includes a cylindrical shell and an upper funnel 11 and a lower funnel 10 within the cylindrical shell. The outlet at the lower end of the upper funnel 11 is aligned with the upper port of the lower funnel 10, and the outlet at the lower end of the lower funnel 10 serves as the cloth outlet. An openable upper plug plate 4 is provided at the outlet of the upper funnel 11, and an openable lower plug plate 9 is provided at the outlet of the lower funnel 10. A cloth receiving chamber is provided between the upper funnel 11 and the lower funnel 10 within the cylindrical shell. A downwardly extending bracket 5 is provided on the outer wall of the cylindrical shell. The bracket 5 is formed into a square frame by four vertical rods and four horizontal beams connecting the four vertical rods. To enhance the stability of the square frame, four connecting rods are provided at the lower parts of the four vertical rods. The bottom of the collecting hopper 3 is directly seated on the four horizontal beams of the square frame and is detachably connected to the cylindrical shell of the collecting hopper 3 by bolts. Since the volute 2 and the collecting hopper 3 in the casing are arranged up and down, and the axis of the cylindrical shell is arranged vertically, the entire casing and the bracket 5 are arranged vertically, the structure is compact, the floor space is reduced, and it is suitable for small spaces.

[0031] In order to facilitate manual observation and understanding of the conditions of the cloth pieces stored in the cloth piece receiving chamber of the collecting bucket 3 , a transparent window 6 is provided on the side wall of the cloth piece receiving chamber of the collecting bucket 3 .

[0032] To keep abreast of the cloth storage conditions within the cloth storage chamber of the collection hopper 3, a photoelectric detection device or image detection device is installed within the cloth storage chamber to detect or observe the cloth storage status within the cloth storage chamber. This photoelectric detection device or image detection device is connected to a control system. The photoelectric detection device can utilize an infrared transmitter and an infrared receiver, positioned at either side of a certain height within the cloth storage chamber. When the stored cloth exceeds this height, a signal is sent to the control system. The image detection device can utilize an image sensor, positioned within the cloth storage chamber. The image sensor automatically detects the cloth content within the cloth storage chamber and transmits a signal to the control system in real time.

[0033] To achieve automatic control, the upper and lower plates 4 and 9 are each connected to an electrically operated telescopic rod, the control end of which is connected to a control system. Based on detection results from a photoelectric or image detection device, the electrically operated telescopic rod is automatically controlled to move the upper or lower plate 4 or 9, opening or closing the outlet of the upper or lower hopper 11 or 10.

[0034] The working principle of the present invention is as follows: the cloth and fiber mixture enter the volute 2 through the square-circular pipe 1, and rotate around the spiral channel in the volute 2 under the drive of the negative pressure generated by the fan 7. Due to the different specific gravity of the cloth and the fiber, the cloth with high density moves along the spiral channel and falls into the collection bucket 3, while the fiber with low density is sucked away from the negative pressure cotton conveying pipe 8 above the volute 2 by the negative pressure of the wind.

[0035] The degree of separation between the cloth and the fibers can be controlled by adjusting the wind force of the fan 7. If the wind force is too strong, the cloth may be sucked away together with the fibers; if the wind force is too weak, the fibers and the cloth may fall into the collecting bucket 3 together.

[0036] During operation of the present invention, the upper plate 4 of the upper funnel 11 in the collection hopper 3 is normally open, and the lower plate 9 of the lower funnel 10 is normally closed. During normal operation, cloth pieces fall into the cloth-holding chamber between the upper funnel 11 and the lower funnel 10, and the accumulated cloth pieces can be viewed through the transparent window 6. Of course, the transparent window 6 can also be converted into a photoelectric detection device or an image detection device. The control system can determine the number of cloth pieces in the cloth-holding chamber or the separation quality. The control system can then issue a full-bin alarm or adjust the wind speed of the negative pressure blower 7, thereby improving the automation and intelligence of the equipment. When the cloth-holding chamber is full, the upper plate 4 is closed and the lower plate 9 is opened to remove the cloth pieces. The design of the upper plate 4 and the lower plate 9 forming two plates allows the cloth fiber separation device to operate continuously and maintain an internal negative pressure state. At the same time, the separated cloth pieces can be removed at any time, thereby improving the production efficiency of the equipment.

[0037] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A cloth fiber separation device for regenerated cotton production, comprising a housing, a feed inlet, a fiber outlet, and a cloth outlet on the housing, characterized in that: The casing includes a volute and a collecting hopper. One side of the volute is the feed port. The starting end of the spiral channel in the volute is connected to the feed port. The end of the spiral channel is located in the middle of the volute. The volute is connected from top to bottom. The top opening in the middle of the volute is the fiber outlet, which is connected to the negative pressure cotton conveying pipeline. The opening at the bottom of the volute is connected to the upper port of the collecting hopper, and the lower port of the collecting hopper is the cloth outlet.

2. The cloth fiber separation device for recycled cotton production according to claim 1, characterized in that: A negative pressure fan is provided on the negative pressure cotton conveying pipeline, and the negative pressure fan is connected to the control system to form an airflow for conveying the regenerated fibers.

3. The cloth fiber separation device for regenerated cotton production according to claim 1 or 2, characterized in that: The feed port on the volute is square, the cross section of the spiral channel is square, and the feed port is connected to a square-to-circular pipe; the fiber outlet at the middle top of the volute is circular, and the negative pressure cotton conveying pipe is a circular pipe.

4. The cloth fiber separation device for regenerated cotton production according to claim 1 or 2, characterized in that: The collecting hopper includes a cylindrical shell and an upper funnel and a lower funnel inside the cylindrical shell. The outlet of the lower end of the upper funnel is aligned with the upper port of the lower funnel. The outlet of the lower end of the lower funnel serves as the cloth outlet. An openable upper plug plate is provided at the outlet of the upper funnel, and an openable lower plug plate is provided at the outlet of the lower funnel. A cloth accommodating chamber is provided between the upper funnel and the lower funnel in the cylindrical shell, and a downwardly extending bracket is provided on the outer side wall of the cylindrical shell.

5. The cloth fiber separation device for recycled cotton production according to claim 3, characterized in that: The collecting hopper includes a cylindrical shell and an upper funnel and a lower funnel inside the cylindrical shell. The outlet of the lower end of the upper funnel is aligned with the upper port of the lower funnel. The outlet of the lower end of the lower funnel serves as the cloth outlet. An openable upper plug plate is provided at the outlet of the upper funnel, and an openable lower plug plate is provided at the outlet of the lower funnel. A cloth accommodating chamber is provided between the upper funnel and the lower funnel in the cylindrical shell, and a downwardly extending bracket is provided on the outer side wall of the cylindrical shell.

6. The cloth fiber separation device for recycled cotton production according to claim 4, characterized in that: A transparent window is provided on the side wall of the cloth accommodating cavity.

7. The cloth fiber separation device for recycled cotton production according to claim 5, characterized in that: A transparent window is provided on the side wall of the cloth accommodating cavity.

8. The cloth fiber separation device for regenerated cotton production according to claim 4, characterized in that: A photoelectric detection device or an image detection device is provided in the cloth accommodating cavity for detecting or observing the storage status of the cloth in the cloth accommodating cavity. The photoelectric detection device or the image detection device is connected to a control system.

9. The cloth fiber separation device for regenerated cotton production according to claim 5, characterized in that: A photoelectric detection device or an image detection device is provided in the cloth accommodating cavity for detecting or observing the storage status of the cloth in the cloth accommodating cavity. The photoelectric detection device or the image detection device is connected to a control system.

10. The cloth fiber separation device for regenerated cotton production according to claim 8 or 9, characterized in that: The upper plug-in plate and the lower plug-in plate are respectively connected to the electric telescopic rod, and the control end of the electric telescopic rod is connected to the control system.

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