Subcritical fluid non-aqueous medium overflow dyeing equipment

Abstract

The utility model particularly discloses subcritical fluid non-aqueous medium overflow dyeing equipment which comprises a U-shaped jet overflow dyeing machine, the two ends of a cloth guide pipe of the U-shaped jet overflow dyeing machine are communicated with the two ends of a U-shaped cylinder body respectively, and an overflow pipe on the cloth guide pipe is connected with an outlet pipe of a heat exchanger through an overflow valve. An inlet of the heat exchanger is in pipe connection with a discharge hole of a cylinder body of the U-shaped jet overflow dyeing machine, a storage device for providing subcritical fluid and a batching mechanism for providing dye respectively through a circulating pump; wherein an outlet of the heat exchanger is in pipe connection with the feeding end of the non-aqueous medium separation device through the switch valve, and the non-aqueous medium discharging end of the non-aqueous medium separation device is in pipe connection with the storage device through the gas compression mechanism and the cooling mechanism in sequence. The non-aqueous medium system is adopted for dyeing, so that the problems of huge water resource consumption and serious sewage discharge in the dyeing industry can be improved, and the medium can be effectively recovered and recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of textile equipment especially a subcritical fluid nonaqueous medium overflow dyeing equipment. BACKGROUND

[0002] In the textile printing and dyeing industry, non-aqueous medium dyeing is a new trend to replace traditional water bath dyeing. Although non-aqueous medium cannot dissolve water-soluble dyes, it can transport substances and transfer energy. One of the main advantages of non-aqueous medium dyeing technology is that the water consumption is very low, as the water required for dissolving dyes and other chemical reagents is very small, and the swelling of cotton fibers only requires a small amount of aqueous solution. During the dyeing process, all the aqueous solution can be completely absorbed by the cotton fabric without any dyeing salt, realizing salt-free dyeing of reactive dyes on cotton fibers. For the recycling of non-aqueous medium, after a short period of static separation, more than 90% of the non-aqueous medium can be directly used for the next dyeing. Therefore, the whole dyeing process is very simple, and the dyeing medium is easy to recycle, which has important practical significance for promoting clean production, energy saving and emission reduction.

[0003] Currently, there is no report on subcritical fluid dyeing equipment in the research of subcritical fluid waterless dyeing at home and abroad, therefore, it is urgent for those skilled in the art to develop a dyeing equipment using subcritical fluid non-aqueous medium, which is helpful to solve the key problem of sustainable development caused by the large consumption of water resources and sewage discharge in the traditional water bath dyeing process. SUMMARY

[0004] The purpose of the present application is to provide a subcritical fluid non-aqueous medium overflow dyeing equipment, which uses non-aqueous medium system for dyeing. This technology not only can improve the problems of huge water consumption and serious sewage discharge in the dyeing industry, but also can effectively recover and recycle the medium, change the application bottleneck of high cost and difficult operation of existing non-aqueous medium dyeing, and has good industrial application value.

[0005] To achieve the above-mentioned purpose, the present application provides:

[0006] A subcritical fluid non-aqueous medium overflow dyeing equipment is designed, which comprises a U-shaped jet overflow dyeing machine, the two ends of a cloth guide pipe of the U-shaped jet overflow dyeing machine are respectively communicated with the two ends of a U-shaped cylinder body, an overflow pipe on the cloth guide pipe is connected through an overflow valve and an outlet pipe of a heat exchanger, and an inlet of the heat exchanger is connected with a discharge port of the cylinder body of the U-shaped jet overflow dyeing machine, a storage device for providing subcritical fluid and a dosing mechanism pipe for providing dyes through a circulating pump;

[0007] The outlet of the heat exchanger is connected with an inlet end pipe of a non-aqueous medium separation device through a switch valve, and the non-aqueous medium discharge end of the non-aqueous medium separation device is connected with the storage device pipe through a gas compression mechanism and a cooling mechanism in sequence.

[0008] Further, the non-aqueous medium separation device comprises a gasification distillation separation tank, and a waste residue discharge end is arranged at the bottom of the separation tank.

[0009] Further, the U-shaped jet overflow dyeing machine comprises a U-shaped cylinder body, a cylinder head, a cloth guide wheel and a nozzle, the cylinder head is installed at one end of the U-shaped cylinder body, a cylinder cover is installed at the outlet of the cylinder head, the cloth guide wheel is installed in the cylinder head and is driven by a magnetic drive motor, a cloth guide pipe is connected to the bottom of the cylinder head, the nozzle is arranged at the pipe opening of the cloth guide pipe close to the cylinder head, an overflow pipe is arranged at the bottom end of the cylinder head and the end of the cloth guide pipe close to the cylinder head respectively, an overflow valve is arranged on the overflow pipe, and the end of the cloth guide pipe away from the cylinder head is in communication with the other end of the U-shaped cylinder body.

[0010] Further, the storage device comprises a non-aqueous medium storage tank for storing the subcritical fluid, the non-aqueous medium storage tank is connected to the inlet pipe of the first feeding pump and the circulation pump;

[0011] The feeding mechanism comprises a feeding cylinder, and the feeding cylinder is connected to the inlet pipe of the second feeding pump and the circulation pump.

[0012] Further, the gas compression mechanism and the cooling mechanism are a compressor and a condenser respectively.

[0013] Further, the subcritical fluid comprises one or a mixture of at least two of tetrafluoroethane, butane, white oil and hydrofluoroether.

[0014] Further, the first feeding pump, the second feeding pump and the circulation pump are all magnetic force pumps.

[0015] The main shaft of the cloth guide wheel is driven by magnetic force.

[0016] With respect to the above background, the utility model provides a kind of subcritical fluid nonaqueous medium overflow dyeing equipment, first textile fabric is placed into the subcritical fluid nonaqueous medium overflow dyeing machine cylinder, and the interface of the both ends of textile fabric is connected using sewing machine to form a closed ring;Secondly, the air in the system is pumped out using vacuum pump;Non-aqueous medium is introduced into circulating pump, and dye is added simultaneously, so that dye is uniformly dispersed in non-aqueous medium;Then, temperature curve is designed to heat and cool;After dyeing is completed, excess dyeing liquid is introduced into non-aqueous medium separation device, and in non-aqueous medium separation device, non-aqueous medium is gasified and distilled, and excess dye is enriched in gasification distillation tank bottom;Clean non-aqueous medium soaping is introduced, and soaping is completed according to designed temperature curve, and soaping liquid is introduced into non-aqueous medium separation device, non-aqueous medium is gasified and distilled, and excess dye and auxiliary agent are enriched in gasification distillation tank bottom;Vacuum is extracted to overflow pipe again, and non-aqueous medium in the inside is extracted into non-aqueous medium separation device for recycling, and finally overflow pipe is emptied, cylinder cover is opened, fabric is taken out, and the whole process is completed.

[0017] Therefore, the device provides a dyeing equipment applying subcritical fluid to dyeing, which can realize the real application of non-aqueous medium (subcritical fluid) in textile industry, the technology can not only improve the problems of huge water consumption and serious sewage discharge in dyeing industry, but also effectively recycle and recycle medium, change the application bottleneck of high cost and difficult operation of existing non-aqueous medium dyeing, and has good industrial application value. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating labor.

[0019] ATTACHMENT Figure 1 Structure diagram of subcritical fluid nonaqueous medium overflow dyeing equipment;

[0020] Among them:

[0021] 1. Storage tank, 2. Dosing cylinder, 3. Condenser, 4. Compressor, 5. U-shaped cylinder body, 6. Cylinder head, 7. Overflow pipe, 8. Gasification distillation tank, 9. Cloth guide pipe, 10. Heat exchanger, 11. Circulating pump. DETAILED DESCRIPTION

[0022] With reference to the drawings and specific embodiments, the technical solutions in the embodiments of the present application will be described in detail below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0024] As Figure 1 shown, the present application provides a subcritical fluid non-aqueous medium overflow dyeing equipment, comprising a U-shaped jet overflow dyeing machine, both ends of a cloth guide pipe 9 of the U-shaped jet overflow dyeing machine are communicated with both ends of a U-shaped cylinder body 5, an overflow pipe 7 on the cloth guide pipe 9 is connected through an overflow valve and an outlet pipe of a heat exchanger 10, and an inlet of the heat exchanger 10 is connected with a discharge port of the cylinder body of the U-shaped jet overflow dyeing machine, a storage device for providing subcritical fluid and a dosing mechanism pipe for providing dyes through a circulating pump 11 respectively;

[0025] Wherein, the outlet of the heat exchanger 10 is connected with a feeding end pipe of a non-aqueous medium separation device through a switch valve, and a non-aqueous medium discharge end of the non-aqueous medium separation device is connected with a storage device pipe through a gas compressor 4 and a cooling mechanism in sequence.

[0026] When the subcritical fluid non-aqueous medium overflow dyeing equipment is applied, first, textile fabric is put into the cylinder body of the subcritical fluid non-aqueous medium overflow dyeing machine, and both end interfaces of the textile fabric are connected to form a closed loop by using a sewing machine; second, the air in the system is pumped out by using a vacuum pump; third, the non-aqueous medium is introduced into the circulating pump 11, and dyes are added at the same time, so that the dyes are uniformly dispersed in the non-aqueous medium; fourth, the temperature is raised and lowered according to the designed temperature curve; after the dyeing is completed, the excess dyeing liquid is introduced into the non-aqueous medium separation device, in the non-aqueous medium separation device, the non-aqueous medium is gasified and distilled, and the excess dyes are enriched at the bottom of the gasification and distillation tank 8; clean non-aqueous medium is introduced for soaping, and after the soaping is completed according to the designed temperature curve, the soaping liquid is introduced into the non-aqueous medium separation device, the non-aqueous medium is gasified and distilled, and the excess dyes and auxiliaries are enriched at the bottom of the gasification and distillation tank 8; the overflow pipe 7 is vacuumized again, the non-aqueous medium in the overflow pipe 7 is pumped out and recycled in the non-aqueous medium separation device, and finally the overflow pipe 7 is emptied, the cylinder cover is opened, the fabric is taken out, and the whole process is completed.

[0027] Therefore, the device provides a dyeing equipment applying subcritical fluid to dyeing, which can realize the real application of non-water medium (subcritical fluid) in the textile industry. The technology can not only improve the problems of huge water consumption and serious sewage discharge in the dyeing industry, but also effectively recycle and recycle the medium, change the application bottleneck of high cost and difficult operation of the existing non-water medium dyeing, and has good industrial application value.

[0028] On the basis of the above embodiment, the non-water medium separation device comprises a gasification distillation separation tank, and a waste residue discharge end is arranged at the bottom of the gasification distillation separation tank.

[0029] Specifically, the gasification distillation separation tank is used for heating the subcritical fluid in it to make it gasify; in implementation, the gasification distillation separation tank comprises a tank body and a heating module, and the heating module can be an electric heating wire;

[0030] In addition, the waste residue discharge end arranged at the bottom of the gasification distillation separation tank can be used for discharging the fuel deposited at the bottom thereof, thereby facilitating cleaning.

[0031] On the basis of the above embodiment, the U-shaped jet overflow dyeing machine comprises a U-shaped cylinder body 5, a cylinder head 6, a cloth guide wheel and a nozzle, the cylinder head 6 is installed at one end of the U-shaped cylinder body 5, a cylinder cover is installed at the outlet of the cylinder head 6, the cloth guide wheel is installed in the cylinder head 6, the cloth guide wheel is driven by a magnetic drive motor, the bottom of the cylinder head 6 is connected with a cloth guide pipe 9, and the nozzle is arranged at the pipe opening of the cloth guide pipe 9 close to the cylinder head 6; an overflow pipe 7 is arranged at the bottom end of the cylinder head 6 and one end of the cloth guide pipe 9 close to the cylinder head 6 respectively, and an overflow valve is arranged on the overflow pipe 7; one end of the cloth guide pipe 9 away from the cylinder head 6 and the other end of the U-shaped cylinder body 5 are communicated; wherein, the cylinder cover is installed at the outlet of the cylinder head 6, so as to close the outlet of the cylinder head 6, thereby facilitating taking and placing materials.

[0032] On the basis of the above embodiment, the storage device comprises a non-water medium storage tank 1 for storing subcritical fluid, and the non-water medium storage tank 1 is connected with the inlet pipe of the first feeding pump and the circulation pump 11; the batching mechanism comprises a batching cylinder 2, and the batching cylinder 2 is connected with the inlet pipe of the second feeding pump and the circulation pump 11.

[0033] On the basis of the above embodiment, the gas compression mechanism and the cooling mechanism are respectively a compressor 4 and a condenser 3; so as to compress the gaseous medium of the subcritical fluid, and cooperate with the condenser 3 to reduce the temperature, so that the gaseous medium of the compressed subcritical fluid can be converted into liquid to flow into the storage tank 1 for recycling.

[0034] On the basis of the above embodiment, the subcritical fluid comprises one or a mixture of at least two of tetrafluoroethane, butane, white oil and hydrofluoroether; here, no specific limitation is made, which can be any one or any mixture of multiple, which is common sense in the art.

[0035] In order to better technical effect, on the basis of the above embodiment, the first feeding pump, the second feeding pump and the circulating pump 11 are all magnetic force pumps; wherein the main shaft of the cloth guide wheel adopts magnetic force transmission.

[0036] Specifically, the first feeding pump, the second feeding pump, the circulating pump 11 all adopt magnetic force pumps, and the transmission device matched therewith adopts magnetic force transmission and belongs to static sealing; the main shaft of the cloth guide wheel adopts magnetic force transmission and is a static sealing structure; and all parts of the device are static sealing, without dynamic shaft sealing, and the design pressure of the whole equipment is 10 MPa.

[0037] It should be noted that in the present specification, relational terms such as first and second and the like are used solely to distinguish one entity from another entity, without necessarily requiring or implying any such actual relationship or order between such entities.

[0038] The utility model has been introduced in detail above. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A subcritical fluid non-aqueous medium overflow dyeing apparatus comprising a U- shaped jet overflow dyeing machine, characterized in that, The two ends of the guide tube are communicated with the two ends of the U-shaped cylinder body respectively, the overflow pipe on the guide tube is connected through the overflow valve and the outlet pipe of the heat exchanger, and the inlet of the heat exchanger is connected with the discharge port of the cylinder body of the U-shaped jet overflow dyeing machine, the storage device for providing subcritical fluid and the dosing mechanism pipe for providing dye through the circulating pump respectively. The outlet of the heat exchanger is connected with the feed end pipe of the non-water medium separation device through the switch valve, and the non-water medium discharge end of the non-water medium separation device is connected with the storage device pipe through the gas compression mechanism and the cooling mechanism in sequence.

2. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 1, characterized by, The non-water medium separation device comprises a gasification distillation separation tank, and the bottom of the separation tank is provided with a waste residue discharge end.

3. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 1, characterized by, The U-shaped jet overflow dyeing machine comprises a U-shaped cylinder body, a cylinder head, a guide cloth wheel and a nozzle, the cylinder head is installed at one end of the U-shaped cylinder body, a cylinder cover is installed at the outlet of the cylinder head, the guide cloth wheel is installed in the cylinder head and is driven by a magnetic drive motor, the bottom of the cylinder head is connected with a guide cloth tube, the guide cloth tube is provided with the nozzle at the pipe opening close to the cylinder head, the bottom end of the cylinder head and the end of the guide cloth tube close to the cylinder head are respectively provided with overflow pipes, the overflow pipes are provided with overflow valves, and the end of the guide cloth tube away from the cylinder head is communicated with the other end of the U-shaped cylinder body.

4. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 3, characterized by The storage device comprises a non-water medium storage tank for storing subcritical fluid, and the non-water medium storage tank is connected through the inlet pipe of the first feeding pump and the circulating pump. The dosing mechanism comprises a dosing cylinder which is connected with the inlet pipe of the circulating pump through the second feeding pump.

5. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 1, characterized by, The gas compression mechanism and the cooling mechanism are a compressor and a condenser respectively.

6. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 1, characterized by, The subcritical fluid comprises one or a mixture of at least two of tetrafluoroethane, butane, white oil and hydrofluoroether.

7. The subcritical fluid non-aqueous medium overflow dyeing apparatus according to claim 4, characterized by The first feeding pump, the second feeding pump and the circulating pump are all magnetic force pumps. The main shaft of the guide cloth wheel adopts magnetic drive.

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