Desizing treatment process and desizing equipment for memory fabric

Abstract

The invention relates to the technical field of textile fabric processing, and discloses a desizing treatment process of a memory fabric, which comprises the following steps: S1, preparing a treatment liquid: preparing a composite bio-enzyme desizing liquid with the pH value of 6-7 by using 3-5g / L of alpha-amylase, 1-2g / L of lipase and 0.5-1g / L of penetrant JFC, adding 0.1-0.3 g / L of nano titanium dioxide dispersion liquid into the treatment liquid, and uniformly stirring the composite bio-enzyme desizing liquid and the penetrant JFC; s3, performing gradient desizing: performing desizing treatment in three stages of treatment boxes by using a heating system in desizing equipment; S4, performing online cleaning: arranging a high-pressure spraying assembly in a cleaning cabin at an outlet section of a final-stage desizing box for cleaning. Activity complementation is formed by alpha-amylase and lipase in a stepped heating environment, efficient decomposition of the composite slurry is realized under a mild condition in cooperation with a diffusion enhancement effect of a penetrant, fiber damage caused by strong acid and strong alkali treatment is effectively avoided, and meanwhile, through online addition of a nano titanium dioxide dispersion liquid, the composite slurry is prepared. And deep grease residues are further removed by virtue of the surface catalytic characteristic, so that the problem of fiber damage caused by acid-base desizing is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile fabric processing, in particular to a desizing process and desizing equipment for memory fabric. BACKGROUND

[0002] As a new type of functional fabric, memory fabric has been widely used in the fields of clothing and home textiles due to its unique shape memory function, good elastic recovery and comfortable hand feeling. However, in the weaving process of memory fabric, a large amount of sizing agent needs to be applied to ensure that the warp yarn can withstand friction and stretching during weaving. These sizing agents must be removed before subsequent processing and use, otherwise they will seriously affect the performance of the fabric.

[0003] Currently, strong acid and strong alkali are used for desizing of memory fabric. Although strong acid and strong alkali can remove sizing agent to some extent, they cannot effectively remove complex compound sizing agent on the memory fabric, resulting in incomplete desizing and causing great damage to the memory fabric fibers, which destroys the physical properties of the fabric. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a desizing process and desizing equipment for memory fabric, which solves the problem of incomplete desizing and great damage to memory fabric fibers caused by strong acid and strong alkali treatment.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a desizing process for memory fabric, comprising the following steps: S1. Preparing a treatment solution: preparing a compound biological enzyme desizing solution with pH value of 6-7 by mixing alpha-amylase 3-5 g / L, lipase 1-2 g / L and penetrating agent JFC 0.5-1 g / L, and adding 0.1-0.3 g / L of nano titanium dioxide dispersion liquid to the treatment solution for catalytic decomposition of residual oil; S2. Pretreatment: passing the memory fabric through a pre-soaking tank filled with warm water at 40-45℃ at a speed of 5-8 m / min for 2-3 min, and the liquid filtered by a multi-stage filtration device connected to the inclined waste liquid collection tank in the desizing equipment is used for recycling; S3. Gradient desizing: using the heating system in the desizing equipment to divide the desizing process into three stages, the first stage is at 50±2℃, the second stage is at 55±2℃, and the third stage is at 60±2℃, and each stage lasts for 5-8 min; S4. Online cleaning: setting a high-pressure spraying assembly in the cleaning cabin at the outlet section of the last desizing tank for cleaning, and using warm water at 35-40℃ for reverse spraying cleaning, with the spraying water amount being 1.5-2 times the fabric liquid load; S5. Waste liquid recovery: the spray wastewater is filtered by the multi-stage filtering device in the desizing equipment and then recycled to the pre-dipping tank for use; S6. Vacuum dewatering: the surface residual liquid is removed by the vacuum dewatering roller in the desizing equipment, so that the water content of the fabric is ≤15%, and the vacuum degree is -0.08 to -0.1 MPa.

[0006] Preferably, the enzyme activity retention rates of the three-stage treatment boxes in step S3 are respectively: the first box ≥90%, the second box ≥85%, and the third box ≥80%, and the concentration gradient is maintained by real-time enzyme preparation supplement.

[0007] Preferably, the spraying pressure in step S4 is 0.3-0.5 MPa, the spraying angle is 30-45° with the fabric surface, and the distance between the spraying pipes is 1 / 8-1 / 10 of the width of the fabric surface.

[0008] Preferably, 0.1-0.3 g / L of nano titanium dioxide dispersion liquid is added to the treatment liquid, and the dispersion liquid is added to the desizing liquid storage tank after being treated by an ultrasonic homogenizer for 30 min.

[0009] A desizing equipment for memory fabric, comprising: a box body, an outlet end of the box body is connected with a cleaning cabin through a flange, a group of S-shaped fabric guide rollers are staggered arranged inside the cleaning cabin, the roller spacing is 50-80 mm, the group of S-shaped fabric guide rollers are 6 fabric guide rollers staggered arranged in an up-down manner, forming a continuous S-shaped fabric path, and both ends of the fabric guide rollers are fixed to the side wall of the cabin body through bearing seats; a high-pressure spraying pipe, the high-pressure spraying pipe is arranged between every two adjacent fabric guide rollers, the spraying hole diameter is 0.2-0.3 mm, the hole density is 20-30 per meter, and the spraying hole axis is 30-45° with the normal line of the fabric surface; an inclined waste liquid collecting tank, the inclined waste liquid collecting tank is located at the bottom of the group of S-shaped fabric guide rollers, the tank body is inclined at an angle of 5-8°, and the bottom end is connected with the inlet of a multi-stage filtering device through a PVC pipeline; a gas-liquid separator, the gas-liquid separator is connected with the air outlet of a vacuum dewatering roller through a stainless steel bellows, the surface of the vacuum dewatering roller is coated with a 3-5 mm thick silica gel layer, and a heating system is arranged at the top of the vacuum dewatering roller.

[0010] Preferably, the multi-stage filtering device is composed of three-stage filtering structures; a first-stage stainless steel filter screen, which is 80-100 mesh and is detachably installed at the outlet of the collecting tank; a second-stage activated carbon adsorption layer, which has a specific surface area ≥1000 m² / g; a third-stage ceramic membrane filter, which has a pore size of 0.1-0.2 μm and a working pressure of 0.2-0.4 MPa.

[0011] Preferably, the heating system comprises: A steam heating unit is arranged at the bottom of the tank, the steam coil is distributed in a serpentine shape, the coil spacing is 100-150 mm, and the steam pressure is 0.15-0.25 MPa; An infrared compensation heater is installed at a height of 50-100 mm from the liquid surface on the side wall of the tank, the power density is 2-3 kW / m², and the heating surface covers 2 / 3 of the length direction of the tank; A temperature sensor is arranged at a position 200 mm below the liquid surface of each treatment tank, and is connected to the PLC control system through an RS485 interface, and the temperature control accuracy is ±0.5°C.

[0012] Preferably, the vacuum dewatering roller comprises: A helical flow guide groove is machined along the circumferential direction of the roller surface, and has a right-handed single-thread groove with a depth of 2-3 mm and a pitch of 15-20 mm; A polytetrafluoroethylene coating is formed by a plasma spraying process to form a 50-80 μm thick coating, and the surface roughness Ra is ≤0.8 μm, covering the area of the roller surface except the flow guide groove.

[0013] Preferably, the cleaning cabin is provided with a humidity sensor and an atomization compensation nozzle at the top, the humidity sensor is installed at the center position of the cabin top plate, the probe is 150-200 mm away from the cloth surface, and the relative humidity in the cabin is monitored in real time; The atomization compensation nozzle is arranged on both sides of the humidity sensor, connected to the pure water supply system through a quick connector, the inclination angle of the nozzle is 20-30°, and the atomization particle size is 10-20 μm.

[0014] Preferably, the ceramic membrane filter is provided with a backwashing module, and the backwashing module comprises: A backwashing pump, the inlet of the backwashing pump is connected to a pure water tank, and the outlet is connected to the inner cavity of the membrane assembly through a three-way valve; A pressure sensor is installed at the outlet of the membrane assembly, and the trigger condition for backwashing is that the transmembrane pressure difference is ≥0.5 MPa; A time sequence controller is arranged, which sets the backwashing to be started every 100-150 m of cloth, the backwashing pressure is 0.6-0.8 MPa, and the duration time is 30-60 s.

[0015] The application provides a desizing treatment process and desizing equipment for memory fabric. The application has the following beneficial effects: 1.The present application realizes the efficient decomposition of the compound slurry under mild conditions by the formation of activity complementation of alpha-amylase and lipase in a stepwise warming environment, combined with the diffusion enhancement effect of penetrant, effectively avoids the fiber damage caused by strong acid and alkali treatment, and further removes the deep oil residue through the surface catalytic properties of the on-line addition of nano titanium dioxide dispersion liquid, thereby avoiding the fiber damage problem caused by acid and alkali desizing.

[0016] 2.The present application reconstructs the resource utilization mode of the desizing process through the organic linkage of equipment modularization integration and circulation system, and through the space-time cooperation of S-shaped guide cloth path and reverse spraying in the cleaning cabin, the contact time of the cloth surface is prolonged and the fluid mechanics effect is optimized, the peeling efficiency of the residual treatment liquid is significantly improved, the closed loop waterway formed by the multi-stage filtration device and the pre-soaking tank not only realizes the cascade utilization of water resources, but also establishes a technical system for the regeneration and utilization of treatment liquid through the triple protection of physical interception, adsorption purification and precision filtration, solving the problems of high energy consumption and high water treatment cost of traditional split type equipment.

[0017] 3.The present application forms the combined effect of flexible extrusion and negative pressure suction through the silicon rubber coating layer of the vacuum dewatering roller and the spiral flow guide groove, avoids the damage of mechanical stress to the memory fiber while efficiently dewatering, and realizes the real-time linkage of the humidity sensing system and the atomization compensation device, thereby constructing a dynamic balance microenvironment control system, preventing the crystallization of the fiber caused by excessive dewatering, avoiding secondary pollution caused by high humidity environment, and completely retaining the shape recovery function of the memory fabric, thereby solving the problem of the attenuation of the characteristics of the functional fabric after treatment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a flowchart of the desizing process of the memory fabric of the present application; Figure 2 It is a flowchart of the desizing equipment of the memory fabric of the present application; Among them, 1, box; 101, Z-shaped guide roller group; 2, pre-soaking tank; 3, heating system; 4, cleaning cabin; 41, S-shaped guide roller group; 42, high-pressure spraying pipe; 43, inclined waste liquid collection tank; 44, multi-stage filtration device; 45, gas-liquid separator; 46, vacuum dewatering roller; 47, humidity sensor; 48, atomization compensation nozzle. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described below in conjunction with the drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] Please refer to the attached Figure 1 The embodiment of the present application provides a desizing treatment process of memory fabric, comprising the following steps: S1. Preparing a treatment solution: a composite bio-enzyme desizing solution with pH value of 6-7 is prepared by using α-amylase 3-5 g / L, lipase 1-2 g / L, and penetrating agent JFC 0.5-1 g / L, and 0.1-0.3 g / L of nano-titanium dioxide dispersion liquid is added to the treatment solution for catalytic decomposition of residual oil; The complex system of α-amylase and lipase decomposes starch and fat pulp through synergistic effect, the penetrating agent JFC reduces the surface tension of the solution, accelerates the diffusion of enzyme molecules to the inside of the fiber, and the nano-titanium dioxide oxidizes and decomposes the hydrophobic oil through photocatalysis in a near-neutral environment, avoiding the hydrolysis damage of alkaline conditions to the polyester fiber in the memory fabric.

[0021] S2. Pretreatment: the memory fabric is passed through a pre-soaking tank 2 filled with warm water at 40-45 DEG C at a speed of 5-8 m / min, and the immersion time is 2-3 min, the pre-soaking tank 2 is connected to the liquid filtered by the multi-stage filtering device 44 in the inclined waste liquid collection tank 43 of the desizing equipment for recycling; The pre-soaking tank 2 softens the pulp and expands the fiber gap by using 40-45 DEG C warm water, providing a wetting basis for subsequent enzyme reaction. The residual enzyme activity in the filtered recycled liquid is utilized twice, reducing the consumption of fresh enzyme preparation, and the direction of the circulating water flow is opposite to the direction of the fabric movement, improving the impurity displacement efficiency.

[0022] S3. Gradient desizing: the desizing equipment uses a heating system 3 with three levels of treatment boxes for desizing treatment, the first level treatment temperature is 50±2 DEG C, the second level is 55±2 DEG C, and the third level is 60±2 DEG C, and each level treatment time is 5-8 min; The temperature gradient design matches the enzyme activity temperature curve: 50 DEG C activates α-amylase to decompose starch backbone, 55 DEG C enhances the hydrolysis of ester bond by lipase, and 60 DEG C accelerates the separation of macromolecular products from fiber through thermal motion, and the three-level treatment time is gradually decreased to prevent over-reaction damage to the fiber.

[0023] S4. Online cleaning: a high-pressure spraying assembly is arranged in the cleaning cabin 4 at the outlet section of the last desizing box for cleaning, and 35-40 DEG C warm water is used for reverse spraying cleaning, and the spraying water amount is 1.5-2 times of the fabric liquid load; The reverse spraying utilizes the fluid shear force to strip the degradation products attached to the fiber surface, the water temperature of 35-40 DEG C maintains the stability of enzyme protein to avoid inactivation and condensation, and the ratio control of spraying water amount and liquid load ensures that the cleaning liquid fully displaces the residual treatment liquid, while preventing excessive consumption of water resources.

[0024] S5. Waste liquid recovery: the spraying waste water is filtered by the multi-stage filtering device 44 in the desizing equipment and then recycled to the pre-soaking tank 2 for recycling. S-shaped cloth path design increases cleaning contact area by multiple bending of cloth, roller spacing control makes cloth tension uniform, avoids cleaning blind area caused by wrinkles, flange connection facilitates modular disassembly and maintenance of cleaning cabin 4, and forms a sealed structure with the box 1 to prevent heat loss.

[0025] S6. Vacuum dewatering: remove surface residual liquid through vacuum dewatering roller 46 in the desizing equipment, so that the moisture content of the fabric is ≤15%, and the vacuum degree is -0.08 to -0.1 MPa.

[0026] The diameter and density of the spray holes match the gap between the fabric textures, the 30-45° spray angle forms a tangential impact force to separate the gaps between fibers and impurities, the staggered arrangement of adjacent spray pipes achieves a cleaning coverage rate of ≥95%, and avoids the stripe-shaped residues caused by straight-line spraying.

[0027] The enzyme activity retention rates of the three-stage treatment tanks in step S3 are: the first tank ≥90%, the second tank ≥85%, and the third tank ≥80%. The enzyme concentration gradient is maintained by real-time enzyme supplement.

[0028] The enzyme will be consumed during the reaction, so enzyme preparation is added to maintain its concentration to ensure activity. Real-time enzyme supplement ensures enzyme concentration, maintains enzyme activity retention rate, ensures enzyme activity in each stage of the treatment tank, and maintains high desizing efficiency.

[0029] In step S4, the spray pressure is 0.3-0.5 MPa, the spray angle is 30-45° to the fabric surface, and the spray pipe spacing is 1 / 8-1 / 10 of the fabric width.

[0030] According to the principles of fluid mechanics, these parameters ensure that water and fabric are in full contact, and the spray pressure, angle, and pipe spacing make the spray water more evenly cover the fabric.

[0031] 0.1-0.3g / L of nano-titanium dioxide dispersion liquid is added to the treatment liquid, and the dispersion liquid is treated by an ultrasonic homogenizer for 30 minutes before being added to the desizing liquid storage tank.

[0032] The cavitation effect of ultrasonic waves makes the nanoparticles uniformly dispersed, and the treatment of the ultrasonic homogenizer makes the nanoparticles uniformly distributed in the desizing liquid, making the nano-titanium dioxide dispersion liquid uniformly dispersed and improving the catalytic effect.

[0033] Please refer to the attached Figure 2 A desizing equipment for memory fabric, comprising: A box 1, the end outlet of the box 1 is connected to a cleaning cabin 4 through a flange, the S-shaped cloth guide roller group 41 is arranged inside the cleaning cabin 4, the roller spacing is 50-80mm, the S-shaped cloth guide roller group 41 is composed of 6 cloth guide rollers arranged in an upper and lower staggered manner, forming a continuous S-shaped cloth path, and the two ends of the cloth guide roller are fixed to the side wall of the cabin body through a bearing seat. High-pressure spray pipe 42, high-pressure spray pipe 42 is provided between every two adjacent guide cloth roller, spray hole diameter 0.2-0.3mm, hole density 20-30 / m, spray hole axis and cloth surface normal angle 30-45 ° angle; Inclined waste liquid collection tank 43, inclined waste liquid collection tank 43 is located at the bottom of S-shaped guide cloth roller group 41, the tank body inclination angle 5-8 °, the bottom end is connected with the inlet of multistage filter device 44 through PVC pipeline; Gas-liquid separator 45, gas-liquid separator 45 is connected with the air outlet of vacuum dehydration roller 46 through stainless steel corrugated pipe, the surface of vacuum dehydration roller 46 is covered with 3-5mm thick silica gel layer, and heating system 3 is arranged at the top of vacuum dehydration roller 46.

[0034] The elastic deformation of the silica gel layer compensates the cloth thickness fluctuation, the right-handed thread groove generates centrifugal force to guide liquid to be discharged to the roller end when the roller body rotates, the depth of the spiral flow guide is optimized in proportion to the pitch to improve the liquid flow guide efficiency, and the back suction phenomenon is reduced.

[0035] Multistage filter device 44 is composed of three-stage filter structure; The first stage is a stainless steel filter screen, which is 80-100 mesh and can be detachably installed at the outlet of the collection tank; The second stage is an activated carbon adsorption layer, and the specific surface area is greater than or equal to 1000m² / g; The third stage is a ceramic membrane filter, and the pore size is 0.1-0.2μm, and the working pressure is 0.2-0.4MPa.

[0036] The stainless steel filter screen intercepts suspended particles greater than 180μm, the activated carbon adsorbs organic matters with a molecular weight of 200-500Da, the ceramic membrane retains colloidal substances smaller than 0.2μm, the three-stage filtration precision is gradually improved, different phase pollutants are removed, and the COD of the recycled water is less than or equal to 50mg / L.

[0037] Heating system 3 includes: Steam heating unit, the steam heating unit is arranged at the bottom of the box body 1, the steam coil is distributed in a serpentine shape, the coil spacing is 100-150mm, and the steam pressure is 0.15-0.25MPa; Infrared compensation heater, the infrared compensation heater is installed on the side wall of the box body 1 at a height of 50-100mm from the liquid surface, the power density is 2-3kW / m², and the heating surface covers 2 / 3 of the length direction of the box body 1; Temperature sensor, the temperature sensor is arranged at a position 200mm below the liquid surface of each stage, is connected with the PLC control system through the RS485 interface, and the temperature control precision is ±0.5℃.

[0038] Vacuum dehydration roller 46 includes: Spiral flow guide groove, the spiral flow guide groove is a right-handed single-thread groove with a depth of 2-3mm and a pitch of 15-20mm along the circumferential direction of the roller surface. Polytetrafluoroethylene coating, polytetrafluoroethylene coating is formed by plasma spraying process 50-80 μm thick coating, surface roughness Ra≤0.8 μm, covering the area of the roller surface except the flow guide groove.

[0039] The cleaning cabin 4 top is provided with humidity sensor 47 and atomization compensation nozzle 48, humidity sensor 47 is installed in the center of the cabin roof, the probe is 150-200 mm away from the cloth surface, and the relative humidity in the cabin is monitored in real time. Atomization compensation nozzle 48: set on both sides of humidity sensor 47, connected with pure water supply system through quick connector, the inclination angle of nozzle is 20-30°, and the atomization particle size is 10-20 μm.

[0040] 20-30° inclination angle makes the atomized water curtain cover the width of the cloth surface, 10-20 μm particle size water mist is uniformly adsorbed on the fiber surface through Brownian motion, and the humidity sensor 47 feeds back data in real time. When RH>75%, the atomization system is triggered to adjust the water content fluctuation of cloth surface ≤±3% The ceramic membrane filter is provided with a backwashing module, and the backwashing module comprises: Backflush pump, the inlet of backflush pump is connected with pure water tank, and the outlet is connected with the inner cavity of membrane assembly through three-way valve switching; Pressure sensor, the pressure sensor is installed on the outlet of the membrane assembly, and the condition of triggering backflush is that the transmembrane pressure difference is greater than or equal to 0.5 MPa; Time sequence controller, the time sequence controller sets to start backflush every processing 100-150 m cloth, the backflush pressure is 0.6-0.8 MPa, and the duration time is 30-60 s.

[0041] The transmembrane pressure difference threshold corresponds to the critical point of ceramic membrane pollution, and the backflush pressure generates turbulent flow to remove the filter cake layer on the membrane surface. The double mode of time sequence control and pressure difference triggering ensures the backflush efficiency, the recovery rate of membrane flux is greater than or equal to 90%, and the service life of the membrane is prolonged to 2-3 times of that of the traditional equipment.

[0042] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A desizing process for memory fabric, characterized in that, It comprises the following steps: S1. Preparing the treatment solution: preparing a compound bio-enzyme desizing solution with pH value of 6-7 by adding 3-5 g / L of α-amylase, 1-2 g / L of lipase and 0.5-1 g / L of penetrating agent JFC, and adding 0.1-0.3 g / L of nano-titanium dioxide dispersion liquid in the treatment solution for catalytic decomposition of residual oil; S2. Pretreatment: passing the memory fabric through the pre-soaking tank (2) filled with warm water at 40-45°C at a speed of 5-8 m / min for 2-3 min, and the pre-soaking tank (2) is connected to the inclined waste liquid collection tank (43) in the desizing equipment to filter the liquid through the multi-stage filtering device (44) for recycling; S3. Gradient desizing: desizing treatment is performed by using the heating system (3) in the desizing equipment to divide the treatment box into three stages, the first stage is at 50±2°C, the second stage is at 55±2°C, and the third stage is at 60±2°C, and the treatment time of each stage is 5-8 min; S4. Online cleaning: high-pressure spraying components are arranged in the cleaning cabin (4) at the outlet section of the last desizing box for cleaning, and reverse spraying cleaning is performed by using warm water at 35-40°C, and the spraying water amount is 1.5-2 times the fabric loading amount; S5. Waste liquid recovery: the spraying waste water is filtered through the multi-stage filtering device (44) in the desizing equipment and then is fed back to the pre-soaking tank (2) for recycling; S6. Vacuum dewatering: the surface residual liquid is removed by the vacuum dewatering roller (46) in the desizing equipment, and the moisture content of the fabric is ≤15%, and the vacuum degree is -0.08 to -0.1 MPa.

2. A desizing process for memory fabric as claimed in claim 1, wherein: The enzyme activity retention rates of the three-stage treatment box in step S3 are: the first box ≥90%, the second box ≥85%, and the third box ≥80%, and the concentration gradient is maintained by real-time enzyme preparation supplementing.

3. A desizing process of memory fabric as claimed in claim 1 wherein: The spraying pressure in step S4 is 0.3-0.5 MPa, the spraying angle is 30-45° with the fabric, and the spraying pipe spacing is 1 / 8-1 / 10 of the fabric width.

4. A desizing process for memory fabric as claimed in claim 1, wherein: The nano-titanium dioxide dispersion liquid is added in the treatment solution at 0.1-0.3 g / L, and the dispersion liquid is treated by the ultrasonic homogenizer for 30 min and then is added into the desizing solution storage tank.

5. A desizing apparatus for a memory fabric, characterized by, A desizing treatment process for the memory fabric according to any one of claims 1-4, comprising: a box body (1), the outlet end of the last section of the box body (1) is connected to a cleaning cabin (4) through a flange, S-shaped fabric guide roller groups (41) are arranged alternately inside the cleaning cabin (4), the roller spacing is 50-80 mm, the S-shaped fabric guide roller groups (41) are composed of 6 fabric guide rollers arranged alternately in an upper-lower manner to form a continuous S-shaped fabric path, and the two ends of the fabric guide rollers are fixed to the side walls of the cabin body through bearing seats; high-pressure spraying pipes (42) are arranged between every two adjacent fabric guide rollers, the spraying hole diameter is 0.2-0.3 mm, the hole density is 20-30 per meter, and the spraying hole axis is 30-45° with the normal line of the fabric; an inclined waste liquid collection tank (43) is arranged at the bottom of the S-shaped fabric guide roller groups (41), the tank body is inclined at an angle of 5-8°, and the bottom end is connected to the inlet of a multi-stage filtering device (44) through a PVC pipe. A gas-liquid separator (45) is connected to the air outlet of a vacuum dehydration roller (46) by a stainless steel bellows. The surface of the vacuum dehydration roller (46) is coated with a 3-5 mm thick silica gel layer. A heating system (3) is arranged on the top of the vacuum dehydration roller (46).

6. A desizing apparatus for a memory fabric according to claim 5, wherein: The multi-stage filtering device (44) is composed of three filtering structures; The first stage is a stainless steel filter screen with a mesh size of 80-100, which is detachably installed at the outlet of the collection tank; The second stage is an activated carbon adsorption layer with a specific surface area of ≥1000 m² / g; The third stage is a ceramic membrane filter with a pore size of 0.1-0.2 μm and a working pressure of 0.2-0.4 MPa.

7. A desizing apparatus for a memory fabric according to claim 5, wherein: The heating system (3) includes: A steam heating unit is arranged at the bottom of the box (1). The steam coil is distributed in a serpentine shape with a coil spacing of 100-150 mm and a steam pressure of 0.15-0.25 MPa; An infrared compensation heater is installed on the side wall of the box (1) at a height of 50-100 mm from the liquid surface. The power density is 2-3 kW / m², and the heating surface covers 2 / 3 of the length direction of the box (1); A temperature sensor is arranged 200 mm below the liquid surface of each stage of the processing box. It is connected to the PLC control system through an RS485 interface, and the temperature control accuracy is ±0.5°C.

8. A desizing apparatus for a memory fabric according to claim 5, wherein: The vacuum dehydration roller (46) includes: A spiral flow guide groove is machined along the circumferential direction of the roller surface with a right-handed single-thread groove with a depth of 2-3 mm and a pitch of 15-20 mm; A polytetrafluoroethylene coating is formed by plasma spraying process to form a 50-80 μm thick coating with a surface roughness Ra≤0.8 μm covering the area of the roller surface except the flow guide groove.

9. A desizing apparatus for a memory fabric according to claim 5, wherein: A humidity sensor (47) and an atomization compensation nozzle (48) are arranged on the top of the cleaning cabin (4). The humidity sensor (47) is installed at the center of the cabin roof with a probe distance of 150-200 mm from the cloth surface to monitor the relative humidity in the cabin in real time. The atomization compensation nozzle (48) is arranged on both sides of the humidity sensor (47) and connected to the pure water supply system through a quick connector. The inclination angle of the nozzle is 20-30°, and the atomization particle size is 10-20 μm.

10. A desizing apparatus for a memory fabric according to claim 6, wherein: The ceramic membrane filter is provided with a backwashing module, which includes: A backwashing pump with an inlet connected to a pure water tank and an outlet connected to the inner cavity of the membrane assembly through a three-way valve; A pressure sensor is installed at the outlet of the membrane assembly. The trigger condition for backwashing is a transmembrane pressure difference of ≥0.5 MPa; A time sequence controller is set to start backwashing every 100-150 m of cloth processed, with a backwashing pressure of 0.6-0.8 MPa and a duration of 30-60 s.

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