Waste textile solvent recovery device

Abstract

The utility model relates to a waste textile solvent recovery device which comprises a shell (1), a supporting base (2) is arranged in the shell (1), a rotating base (3) is arranged on the supporting base (2), a waste textile bearing frame (4) is arranged on the rotating base (3), and a solvent recovery kettle (5) is arranged outside the shell (1). And the shell (1) is connected with the solvent recovery kettle (5) through a first solvent pipeline (6). According to the waste textile solvent recovery device disclosed by the utility model, the loss of a large amount of decolorizing solvent can be avoided, the production cost is reduced, and the pollution to the environment is prevented.

Description

Technical Field

[0001] This utility model relates to the field of decolorization technology for waste textiles, specifically a solvent recovery device for waste textiles. Background Technology

[0002] With environmental protection becoming increasingly important, the recycling and reuse of waste polyester is receiving more and more attention. Among the technologies for recycling and reusing waste polyester, the reuse of already consumed waste textiles is the most meaningful, but also the most technically challenging, with the biggest technical bottleneck being the decolorization technology for waste polyester.

[0003] Decolorization techniques for waste polyester fibers are divided into chemical and physical methods. Chemical methods use redox chemicals such as sodium hydroxide and thiourea dioxide to react with and destroy the dyes in the polyester fibers at high temperatures, achieving decolorization. However, this method has limitations, including the applicability of chemicals to different dyes and the presence of chemical residues on the fabric. The other method is the physical method, which involves elution with organic solvents. This method is more universal; as long as a strong dissolving organic solvent is selected, it can effectively remove all disperse dyes. However, this method requires recycling the organic solvent after decolorization to reduce costs. The decolorized dye solution can be directly distilled and recovered, a mature technology in industry. However, there is currently no equipment available for directly recycling the solvent remaining on the fabric, making this step crucial for waste fabric reuse and solvent recovery. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a solvent recovery device for waste textiles, which can avoid the loss of large amounts of decolorizing solvent, reduce production costs, and prevent environmental pollution.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waste textile solvent recovery device, comprising an outer shell, a support base disposed inside the outer shell, a rotating base disposed on the support base, a waste textile carrying frame disposed on the rotating base, a solvent recovery vessel disposed outside the outer shell, and the outer shell and the solvent recovery vessel being connected by a first solvent pipe.

[0008] Optionally, a negative pressure pump is also provided outside the housing, and the negative pressure pump is connected to the housing through a second solvent pipe.

[0009] Optionally, a second valve is provided on the second solvent pipeline.

[0010] Optionally, a condenser is provided between the second valve and the negative pressure pump.

[0011] Optionally, the condenser is connected to the solvent recovery vessel via a third solvent pipeline.

[0012] Optionally, a hot air duct is also provided at the bottom of the housing.

[0013] Optionally, the outer casing includes a housing, the top of which is provided with a first opening, and a housing sealing cover is provided at the first opening.

[0014] Optionally, the waste textile carrier frame includes a frame body, the top of the frame body is provided with a second opening, and a carrier frame sealing cover is provided at the second opening position.

[0015] Optionally, multiple through holes are uniformly formed on the outer wall of the frame.

[0016] Optionally, the bottom of the frame is provided with a buckle; the front of the rotating base is provided with a slot, which cooperates with the buckle.

[0017] (III) Beneficial Effects

[0018] 1. This utility model can avoid the loss of a large amount of decolorizing solvent, reduce production costs, and prevent environmental pollution;

[0019] 2. The entire device of this utility model has high solvent recovery efficiency and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a solvent recovery device for waste textiles according to the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the carrier frame for waste textiles.

[0022] In the diagram: 1. Outer shell; 1.1. Shell; 1.2. First opening; 1.3. Shell sealing cover; 2. Support base; 3. Rotating base; 4. Waste textile carrier frame; 4.1. Frame body; 4.2. Second opening; 4.3. Carrier frame sealing cover; 4.4. Through hole; 4.5. Buckle; 5. Solvent recovery kettle; 6. First solvent pipe; 7. First valve; 8. Negative pressure pump; 9. Second solvent pipe; 10. Second valve; 11. Condenser; 12. Third solvent pipe; 13. Hot air pipe; 14. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-2 As shown, a waste textile solvent recovery device includes an outer shell 1, a support base 2 is provided inside the outer shell 1, a rotating base 3 is provided on the support base 2, a waste textile carrying frame 4 is provided on the rotating base 3, and a solvent recovery tank 5 is provided outside the outer shell 1. The outer shell 1 and the solvent recovery tank 5 are connected by a first solvent pipe 6.

[0025] A first valve 7 is provided on the first solvent pipeline 6;

[0026] A negative pressure pump 8 is also provided outside the outer shell 1, and the negative pressure pump 8 is connected to the outer shell 1 through a second solvent pipe 9;

[0027] A second valve 10 is provided on the second solvent pipeline 9;

[0028] A condenser 11 is provided between the second valve 10 and the negative pressure pump 8;

[0029] The condenser 11 is connected to the solvent recovery vessel 5 via a third solvent pipe 12;

[0030] The bottom of the outer casing 1 is also provided with a hot air pipe 13;

[0031] There are two hot air pipes 13, which are respectively located on the left and right sides of the bottom of the outer casing 1;

[0032] The outer casing 1 includes a housing 1.1, the top of which is provided with a first opening 1.2, and a housing sealing cover 1.3 is provided at the position of the first opening 1.2;

[0033] The support base 2 is located at the center of the bottom of the outer casing 1;

[0034] The waste textile carrier frame 4 includes a frame body 4.1, a second opening 4.2 is provided at the top of the frame body 4.1, and a carrier frame sealing cover 4.3 is provided at the position of the second opening 4.2;

[0035] The outer wall of the frame 4.1 is provided with a plurality of through holes 4.4 evenly distributed;

[0036] The bottom of the frame 4.1 is provided with a buckle 4.5;

[0037] The rotating base 3 has a slot 14 on its front side, which cooperates with the buckle 4.5.

[0038] Working principle:

[0039] Area B of the waste textile carrier is filled with decolorized waste textiles. These are lifted directly out and placed into the outer shell. The carrier's clips secure it to the high-speed rotating base, and then the outer shell's sealing cover is closed. The rotation is started, causing the waste textile carrier to undergo high-speed centrifugation. The solvent released after centrifugation flows back to the solvent recovery vessel through the first solvent pipe. The first valve on the first solvent pipe is closed, and high-temperature air is introduced into area A. Simultaneously, the negative pressure pump is activated to begin vacuuming. As the temperature of the waste textiles rises, the pressure in area A decreases, and the solvent adsorbed on the textiles begins to evaporate. It then enters the condenser through the second solvent pipe, re-condenses into liquid, and flows into the solvent recovery vessel through the third solvent pipe. Once the solvent adsorbed on the waste textiles has been completely recovered, the hot air and negative pressure pump are turned off, the outer shell's sealing cover is opened, and the entire waste textile carrier is lifted out using a crane. The carrier's sealing cover is then opened again, and the waste textiles are removed, completing the recycling process.

[0040] Zone A is a negative pressure zone, where a negative pressure pump provides a negative pressure environment to reduce the vapor pressure of the decolorizing solvent and aid in its evaporation. Zone B is the waste textile receiving area; the centrifugal force generated by high-speed rotation can significantly reduce the liquid content of the waste textiles, improving decolorization efficiency. Notably, Zone A is heated directly by hot air pipes, resulting in the highest heating efficiency. The solvent after vacuum distillation is cooled by a condenser and recovered to a solvent recovery vessel.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model according to the specific circumstances.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solvent recovery device for waste textiles, characterized in that: Includes an outer shell (1), a support base (2) is provided inside the outer shell (1), a rotating base (3) is provided on the support base (2), a waste textile carrier frame (4) is provided on the rotating base (3), a solvent recovery vessel (5) is provided outside the outer shell (1), and the outer shell (1) and the solvent recovery vessel (5) are connected by a first solvent pipe (6); A negative pressure pump (8) is also provided outside the outer shell (1), and the negative pressure pump (8) is connected to the outer shell (1) through a second solvent pipe (9); A second valve (10) is provided on the second solvent pipeline (9); A condenser (11) is provided between the second valve (10) and the negative pressure pump (8); The condenser (11) is connected to the solvent recovery vessel (5) via a third solvent pipe (12).

2. The solvent recovery device for waste textiles according to claim 1, characterized in that: A hot air duct (13) is also provided at the bottom of the outer casing (1).

3. The solvent recovery device for waste textiles according to claim 1, characterized in that: The outer casing (1) includes a housing (1.1), the top of which is provided with a first opening (1.2), and a housing sealing cover (1.3) is provided at the position of the first opening (1.2).

4. The solvent recovery device for waste textiles according to claim 1, characterized in that: The waste textile carrier frame (4) includes a frame body (4.1), a second opening (4.2) is provided on the top of the frame body (4.1), and a carrier frame sealing cover (4.3) is provided at the position of the second opening (4.2).

5. The solvent recovery device for waste textiles according to claim 4, characterized in that: The outer wall of the frame (4.1) is provided with a plurality of through holes (4.4) evenly distributed.

6. The solvent recovery device for waste textiles according to claim 4, characterized in that: The bottom of the frame (4.1) is provided with a buckle (4.5); the front of the rotating base (3) is provided with a slot (14), which cooperates with the buckle (4.5).

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