Textile dry cleaning apparatus

Abstract

This invention relates to the field of textile cleaning technology, specifically to a dry cleaning equipment for textiles, comprising a housing, a solvent recovery unit, an extrusion unit, a drying unit, and two pressure regulating units. Air curtains are installed at the inlet and outlet of the housing. A solvent tank is located inside the housing, with height-limiting rollers fixedly installed on both sides of the tank to immerse the fabric in the solvent. The solvent recovery unit is connected to the solvent tank. This invention uses air curtains to prevent solvent vapor leakage, and the height-limiting rollers in the solvent tank ensure thorough immersion and oil removal of the fabric. The extrusion unit, in conjunction with the pressure regulating units, squeezes out most of the solvent from the fabric and returns it to the solvent recovery unit. After extrusion, the fabric enters the drying unit, where negative pressure drying with an adsorption cylinder replaces the traditional long hot air drying chamber, significantly shortening the overall machine length. Furthermore, the closed-loop solvent recovery throughout the process protects water-sensitive fabrics such as silk and viscose from deformation, while achieving miniaturization, continuous and efficient dry cleaning, and energy conservation and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of textile cleaning technology, specifically to a dry cleaning device for textiles. Background Technology

[0002] In the industrial production of textiles, processes such as weaving, coating, laminating, and finishing all have strict requirements for fabric cleanliness, necessitating the effective removal of oily contaminants such as spinning oils, knitting lubricants, and environmental dirt. Currently, aqueous washing is widely used as the mainstream cleaning method in the industrial sector due to its mature technology, low cost, and the fact that modern wastewater treatment technology can effectively control its environmental impact. However, washing is not suitable for all fabric types. On the one hand, water-sensitive materials such as silk, viscose, spandex blends, and certain high-performance fibers are prone to fiber swelling, shrinkage, or irreversible wrinkling and deformation when exposed to water, severely damaging the dimensional stability and hand feel of the fabric. On the other hand, for some fabrics containing special finishing agents or requiring the retention of natural oils, washing will remove these agents, thus impairing the product's functional properties. Therefore, for these special fabrics that cannot withstand washing, dry cleaning with organic solvents becomes an irreplaceable process choice. Dry cleaning can efficiently dissolve and remove oily stains while avoiding the negative effects of water on the fiber structure. It completes the cleaning process while ensuring the original quality of the fabric, which forms the basis of the practical demand for industrial continuous dry cleaning equipment.

[0003] Currently available industrial continuous dry cleaning equipment generally employs long hot air drying chambers. Inside the chamber, the fabric travels along a winding path using multiple guide rollers, and the circulating hot air evaporates the solvent carried by the fabric, which is then carried away by the airflow. To reduce the residual solvent level to within permissible limits, the fabric needs to remain in the drying chamber for a sufficient amount of time. This directly results in the drying chamber being designed as a long and narrow structure, several meters or even more than ten meters long, making the entire equipment excessively long. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dry cleaning device for textiles, comprising a housing, a solvent recovery unit, an extrusion unit, a drying unit, and two pressure regulating units; Air curtains are provided at the inlet and outlet of the housing, and a solvent tank is provided inside the housing. Height limiting rollers are fixedly installed on both sides of the solvent tank to immerse the fabric in the solvent. The solvent recovery unit is connected to the solvent tank. The extrusion unit includes an upper roller fixedly installed inside the housing and upper and lower rollers slidably connected to the housing. The output ends of the two pressure adjustment units are respectively connected to the two ends of the lower roller, which are used to drive the lower roller to cooperate with the upper roller to extrude the fabric. The drying unit includes an adsorption cylinder rotatably connected inside the housing, the adsorption cylinder having several air intake holes, a second motor for driving the adsorption cylinder to rotate, an airtight block fixed in position for blocking the air intake holes at the bottom of the adsorption cylinder, and connecting rollers located on both sides of the adsorption cylinder. The cloth passes around the connecting rollers to cover the top of the adsorption cylinder. The unit also includes a vacuum pump whose suction end is connected to the inner cavity of the adsorption cylinder, and the exhaust end of the vacuum pump is connected to the solvent recovery unit.

[0005] As a preferred embodiment of the present invention: a first fan is fixedly installed on each of the two air curtains on opposite sides, and a soft baffle is provided on each of the two first fans on opposite sides.

[0006] As a preferred technical solution of the present invention, it further includes a gas recovery unit, which is fixedly installed inside the housing and located above the solvent tank. The gas recovery unit includes a recovery box and a second fan. The second fan is connected to the inner cavity of the recovery box, and gas recovery holes are respectively opened on both sides of the bottom of the recovery box.

[0007] As a preferred technical solution of the present invention, it further includes a stirring mechanism, which includes a plurality of shafts rotatably connected to the housing, a baffle plate fixedly installed on the shafts and located in the solvent tank, a first motor with a fixed position, and a plurality of transmission components for drivingly connecting the plurality of shafts to the output end of the first motor.

[0008] As a preferred embodiment of the present invention: the housing is provided with an extrusion groove, the extrusion unit is located in the extrusion groove, and the extrusion groove is connected to the solvent recovery unit.

[0009] As a preferred technical solution of the present invention: the two sides of the housing are respectively provided with strip-shaped holes, and the two ends of the shaft rod included in the lower roller pass through the two strip-shaped holes respectively; The pressure regulating unit includes a fixed slide rail, a slider slidably connected to the slide rail, two ends of the shaft rod being fixedly connected to two sliders respectively, and a rotatable threaded rod. The threads on both sides of the threaded rod are opposite and threaded blocks are threadedly connected to them respectively. An elastic component with one end rotatably connected to the slider is rotatably connected to the threaded block.

[0010] As a preferred embodiment of the present invention, it further includes a preheating unit, which is embedded in the bottom wall of the inner cavity of the housing and is located between the extrusion unit and the drying unit.

[0011] As a preferred embodiment of the present invention: the drying unit further includes an arc-shaped component, which wraps around the top of the adsorption cylinder, and the two connecting rollers are respectively located at both ends of the arc-shaped component, and a heating component is fixedly installed on the inner wall of the arc-shaped component.

[0012] As a preferred embodiment of the present invention: the drying unit further includes a fixing rod, which is located inside the adsorption cylinder and fixedly connected to the shell. The airtight block is fixedly installed on the fixing rod. Annular side plates located on both sides of the adsorption cylinder are fixedly installed on the fixing rod. Bearings are sleeved on the annular side plates. The adsorption cylinder is sleeved on the outer wall of the bearing. A toothed ring is sleeved on one side of the outer wall of the adsorption cylinder. A gear meshing with the toothed ring is fixedly connected to the output end of the second motor.

[0013] As a preferred embodiment of the present invention, the obstruction height of the airtight block on the side near the outlet of the housing is higher than the height of the connecting roller on the side near the outlet of the housing.

[0014] The present invention has the following beneficial effects: This invention uses an air curtain to prevent solvent vapor leakage, and a height-limiting roller in the solvent tank to ensure that the fabric is fully immersed and degreased. The extrusion unit, combined with a pressure regulating unit, squeezes out most of the solvent from the fabric and returns it to the solvent recovery unit. After being extruded, the fabric enters the drying unit, which uses an adsorption cylinder negative pressure drying instead of the traditional long hot air drying room, significantly shortening the overall length of the machine. It also features a closed-loop solvent recovery process, which not only protects water-sensitive fabrics such as silk and viscose from deformation, but also achieves the effects of equipment miniaturization, continuous and efficient dry cleaning, energy saving and environmental protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure provided by the present invention.

[0016] Figure 2 This is a schematic diagram of the internal cross-section provided by the present invention.

[0017] Figure 3 This is a schematic diagram of the gas recovery unit provided by the present invention.

[0018] Figure 4 This is a schematic diagram of the internal structure of the side shell provided by the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the housing provided by the present invention.

[0020] Figure 6 This is a cross-sectional schematic diagram of the drying unit provided by the present invention.

[0021] Figure 7 This is a schematic diagram of the overall structure of the drying unit provided by the present invention.

[0022] Appendix Figure 1-7 The structures represented by each label are listed below: 1. Shell; 101. First blower; 102. Air curtain; 103. Side shell; 104. Solvent tank; 105. Liquid inlet pipe; 106. Height limiting roller; 107. Mounting hole; 108. Liquid inlet hole; 109. Extrusion groove; 110. Clearance groove; 111. Strip hole; 112. Soft baffle; 2. Solvent recovery unit; 3. Fabric; 4. Agitation mechanism; 401. Shaft; 402. Spoiler; 403. Transmission assembly; 404. First motor; 5. Gas recovery unit; 501. Recycling box; 502. Gas recovery port; 503. Negative pressure port; 6. Extrusion unit; 601, Upper roller; 602, Lower roller; 6021, Shaft rod; 7. Pressure regulating unit; 701. Slide rail; 702. Slider; 703. Threaded rod; 704. Threaded block; 705. Elastic component; 706. Mounting base; 707. Pry bar; 8. Preheating unit; 9. Drying unit; 901. Arc-shaped component; 902. Connecting roller; 903. Fixing rod; 904. Adsorption cylinder; 905. Suction hole; 906. Gear; 907. Annular side plate; 908. Bearing; 909. Gear ring; 910. Airtight block; 911. Heating assembly; 912. Air extraction hole; 913. Second motor. Detailed Implementation

[0023] The principles and features of the present invention are described below. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] It should be noted that when a part or component is considered to be "connected to," "located on," or "assembled" to another part or component, it can be directly mounted on the other part or component, or it may be located in an intermediate part or component. The terms "left," "right," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0025] like Figure 1-7 As shown, this application designs a dry cleaning equipment for textiles, specifically including a housing 1, a solvent recovery unit 2, an extrusion unit 6, a drying unit 9, and two pressure regulating units 7; The inner cavity of the housing 1 is entirely straight, eliminating the need for the textile to bend in the planar dimension when passing through it. Air curtains 102 are installed at the inlet and outlet of the housing 1, with the output end of the air curtains 102 facing the fabric 3 and their length matching the width of the inlet and outlet of the housing 1. This prevents the escape of gases containing volatile solvents from the housing 1. A solvent tank 104 is provided inside the housing 1. Height limiting rollers 106 are fixedly installed on both sides of the solvent tank 104 to immerse the fabric 3 in the solvent. The two height limiting rollers 106 are arranged parallel to each other at the same height, with their bottom surfaces below the solvent surface in the solvent tank 104. The fabric 3 passes over the bottom surfaces of the two height limiting rollers 106, immersing the fabric 3 between the rollers in the solvent for cleaning. Solvent recovery unit 2 is connected to solvent tank 104. That is, the output of solvent recovery unit 2 delivers clean solvent into solvent tank 104, while dirty solvent in solvent tank 104 flows into the input of solvent recovery unit 2 for filtration and purification. In other words, the input of solvent tank 104 is located near the outlet of housing 1 and is connected to the output of solvent recovery unit 2, while the output of solvent tank 104 is located near the inlet of housing 1 and is connected to the input of solvent recovery unit 2.

[0026] It should be understood that the solvent recovery unit 2 is used to recover and purify solvent-containing gases, dirty liquid solvents, and liquid solvents generated by extrusion and dehydration discharged from various functional chambers within the equipment, so as to achieve solvent recycling and control emission concentration. The solvent recovery unit 2 is a conventional configuration in the art, typically including one or more combinations of a condensation recovery component, a gas-liquid separation component, a solvent filtration component, and a distillation purification component. During operation, contaminated solvents or solvent-containing mixed gases from the equipment are collected separately. The contaminated solvents are filtered and / or distilled to remove impurities such as lint and oil from fabrics, resulting in clean solvents that can be reused by the equipment. The solvent-containing mixed gases are cooled and condensed to liquefy and separate the solvents, and the exhaust gas is further adsorbed before being discharged in compliance with standards. It should be noted that the specific structure, connection method, and operating parameters of the solvent recovery unit 2 can be selected and implemented by those skilled in the art based on existing mature technologies, depending on the type of solvent used (such as tetrachloroethylene, hydrocarbon solvents, silicon-based solvents, etc.), environmental regulations, and the overall design scale of the equipment. This is not the technical content to be improved by this invention, and therefore will not be elaborated upon here.

[0027] The input end of the solvent tank 104 is also connected to a solvent storage container to facilitate the replenishment of solvent into the solvent tank 104 at any time.

[0028] like Figure 3As shown, specifically, the housing 1 has a mounting hole 107, and a liquid inlet pipe 105 is fixedly installed in the mounting hole 107. The housing 1 also has a liquid inlet hole 108 that connects the solvent tank 104 and the liquid inlet pipe 105. Clean solvent is replenished to the end of the solvent tank 104 through the liquid inlet pipe 105 and the liquid inlet hole 108, so that the last solvent that the fabric 3 that is about to leave the solvent soaking comes into contact with is the cleanest.

[0029] The extrusion unit 6 is located after the solvent tank 104. After the textile is cleaned in the solvent tank 104, it is extruded by the extrusion unit 6 to remove most of the adsorbed solvent. The extrusion unit 6 includes an upper roller 601 fixedly installed inside the housing 1 and a lower roller 602 slidably connected to the housing 1. Preferably, the upper roller 601 and the lower roller 602 are located in the same vertical plane. The fabric 3 passes between the upper roller 601 and the lower roller 602. The sliding direction of the lower roller 602 is vertical, allowing it to move only towards / away from the upper roller 601. The output ends of two pressure regulating units 7 are respectively connected to both ends of the lower roller 602, driving the lower roller 602 to cooperate with the upper roller 601 to extrude the fabric 3. That is, the two pressure regulating units 7 drive the lower roller 602 to move towards the upper roller 601, so that the lower roller 602 presses against the fabric 3 and applies a certain pressure, thereby separating most of the solvent from the fabric 3.

[0030] The drying unit 9 includes an adsorption cylinder 904 rotatably connected inside the housing 1, with both ends of the adsorption cylinder 904 sealed. The adsorption cylinder 904 has several suction holes 905, which are staggered and the wall thickness between adjacent suction holes 905 is less than one centimeter, maximizing the hollow area of ​​the sidewall surface of the adsorption cylinder 904. It also includes a second motor 913 for driving the rotation of the adsorption cylinder 904, and a fixedly positioned airtight block 910 for blocking the bottom suction holes 905 of the adsorption cylinder 904. The airtight block 910 is fan-shaped and fits against the inner wall of the adsorption cylinder 904. The outer wall surface of the adsorption cylinder 904 is made of a self-lubricating and wear-resistant material such as polytetrafluoroethylene. The gap between the adsorption cylinder 904 and the airtight block 910 should be as small as possible or form a dynamic seal to reduce or eliminate the suction force of the suction holes 905 blocked by the airtight block 910. This prevents the ventilation area formed by the suction holes 905 that cannot be covered by the fabric 3 from becoming too large, which would reduce the airflow velocity at the suction holes 905 covered by the fabric 3 and decrease the drying effect. Connecting rollers 902 are located on both sides of the adsorption cylinder 904, and the fabric 3 wraps around the connecting rollers 902 to cover the top of the adsorption cylinder 904. In other words, the combination of the fabric 3 and the airtight block 910 covers all the suction holes 905, reducing the ventilation area, allowing for a higher negative pressure inside the adsorption cylinder 904, and a faster airflow velocity through the fabric 3 into the adsorption cylinder 904, thus enhancing the drying effect. It also includes a vacuum pump whose extraction end is connected to the inner cavity of the adsorption cylinder 904, and whose outlet end is connected to the solvent recovery unit 2.

[0031] The peripheral wall of the adsorption cylinder 904 can be made of metal mesh, and the holes in the metal mesh are the air inlets 905, so as to further reduce the contact area between the cloth 3 and the outer wall of the adsorption cylinder 904, further increase the area of ​​the air inlets 905, and reduce the ventilation blind zone.

[0032] The operating principle is as follows: the textile first enters the solvent tank 104 and is soaked in the solvent, which dissolves the dirt on the textile. Then it moves to the extrusion unit 6, where the pressure regulating unit 7 applies continuous pressure to the lower roller 602, causing the lower roller 602 to continuously extrude most of the solvent adsorbed within the fabric 3. Finally, as it passes over the surface of the adsorption cylinder 904, a vacuum pump creates a negative pressure inside the adsorption cylinder 904, allowing external gas to pass through the fabric 3 and through the suction hole 905 into the adsorption cylinder 904, carrying away any remaining solvent adsorbed within the fabric 3, thus completing the drying process of the fabric 3.

[0033] To improve the solvent leakage prevention effect at the inlet and outlet of the casing 1, Example 1 was designed.

[0034] like Figure 1-6 As shown, the basic structure of the dry cleaning equipment for textiles in this embodiment is basically the same as that of the dry cleaning equipment for textiles in this application. The difference lies in the specific structure for airtightening of the inlet and outlet of the shell 1.

[0035] Two air curtains 102 are each fixedly mounted with a first fan 101 on one side facing each other, and a soft baffle 112 is provided on one side facing each of the two first fans 101. That is, from the outside to the inside, the sequence is: air curtain 102, first fan 101, and soft baffle 112. The soft baffle 112 reduces the ventilation area at the inlet and outlet of the housing 1, reducing the amount of overflowing air. The first fan 101 absorbs most of the overflowing gas. The input end of the air curtain 102 is clean outside air. The air curtain ejected from the air curtain 102 forms an air seal. After contacting the bottom fabric 3, part of the gas in the air curtain is transported into the housing 1, generating a vortex, and then moves to the air inlet of the first fan 101 where it is absorbed by the first fan 101. This improves the air seal effect and reduces the output power requirement of the air curtain 102.

[0036] It also includes a gas recovery unit 5, which is fixedly installed inside the housing 1 and located above the solvent tank 104. The gas recovery unit 5 includes a recovery box 501 and a second fan. The bottom of the recovery box 501 extends into the solvent tank 104 in an inverted trapezoidal shape, so that the shape of the bottom of the recovery box 501 conforms to the distribution shape of the fabric 3 below. The second fan is connected to the inner cavity of the recovery box 501, that is, a negative pressure hole 503 is opened on the recovery box 501, and the second fan is connected to the inner cavity of the recovery box 501 through the negative pressure hole 503. Gas recovery holes 502 are opened on both sides of the bottom of the recovery box 501. Because the volatile solvents used in industrial dry cleaning, such as hydrocarbon solvents D40, D60, tetrachloroethylene, silicone oil solvents, etc., have a vapor density much greater than that of air (air molecular weight is about 29, tetrachloroethylene is about 165, and hydrocarbons are about 140-170), these solvent vapors will sink and accumulate in low-lying areas under static or slightly flowing conditions. Therefore, after the solvent evaporates in the solvent tank 104, it will be deposited on the surface of the liquid and gradually accumulate and thicken. Due to the obstruction of the bottom of the recovery box 501, the accumulated volatile solvent can only accumulate from both sides upwards, that is, above the two height limiting rollers 106. The gas recovery hole 502 is also located here, so that most of the evaporated solvent is absorbed by the gas recovery hole 502 into the recovery box 501, and finally transported to the solvent recovery unit 2 for collection through the negative pressure hole 503 and the second fan.

[0037] To achieve better cleaning results, Example 2 is designed.

[0038] like Figure 3 , Figure 4 As shown, the basic structure of the textile dry cleaning equipment in this embodiment is basically the same as that of the textile dry cleaning equipment in this application, except that the agitation mechanism 4 has a specific structure.

[0039] It also includes an agitation mechanism 4, which comprises several shafts 401 rotatably connected to the housing 1. The shafts 401 extend through the housing 1 to the outside of the housing 1, and the connection between the shafts 401 and the housing 1 is sealed with a sealed bearing. A baffle plate 402 is fixedly installed on the shafts 401 and located in the solvent tank 104. The baffle plate 402 is located below the fabric 3 and parallel to the width direction of the fabric 3. A first motor 404 is fixedly positioned. Specifically, the side wall of the housing 1 has a mounting hole 107, and the first motor 404 is fixedly installed in the mounting hole 107. Multiple transmission components 403 are also included for drivingly connecting the shafts 401 to the output end of the first motor 404. In one specific embodiment, the transmission component 403 includes two sprockets and a chain. The chain is connected end-to-end and meshes with the two sprockets. The two sprockets are respectively fixedly sleeved on two adjacent shafts 401 and the output shaft of the first motor 404 to drively connect all shafts 401 and the first motor 404, similar to the transmission structure of a multi-person bicycle.

[0040] The operating principle is as follows: the first motor 404 drives the shaft 401 to rotate through the transmission assembly 403, causing the spoiler 402 to rotate, thereby agitating the liquid towards the fabric 3, allowing the liquid to pass through the fabric 3 and clean it. The first motor 404 can also be a servo motor to change the motion of the spoiler 402 to reciprocating oscillation.

[0041] To facilitate the recovery of the solvent squeezed out of the fabric 3, and to facilitate the adjustment of the squeezing force according to the type and thickness of the textile, Example 3 is designed.

[0042] like Figure 3-5 As shown, the basic structure of the dry cleaning equipment for textiles in this embodiment is basically the same as that of the dry cleaning equipment for textiles in this application, except that the specific structures of the extrusion unit 6 and the pressure adjustment unit 7 are different.

[0043] The housing 1 has an extrusion groove 109 inside, and the extrusion unit 6 is located inside the extrusion groove 109. The extrusion groove 109 is connected to the solvent recovery unit 2. The bottom surface of the extrusion groove 109 is an inclined plane that slopes towards a point, which is the lowest point of the extrusion groove 109. The connection between the extrusion groove 109 and the solvent recovery unit 2 is located at the lowest point of the extrusion groove 109, so that the extruded solvent falls into the extrusion groove 109, collects at the lowest point, and flows into the solvent recovery unit 2 for recovery.

[0044] Combination Figure 3 , Figure 5 The housing 1 has strip-shaped holes 111 on both sides. The strip-shaped holes 111 are vertical strips and parallel to the slide rail 701. The two ends of the shaft rod 6021 included in the lower roller 602 pass through the two strip-shaped holes 111 respectively, so that the shaft rod 6021 extends to the outside of the housing 1.

[0045] Combination Figure 4The pressure regulating unit 7 includes a fixed slide rail 701, which is vertically positioned and fixedly mounted on the housing 1. A slider 702 is slidably connected to the slide rail 701. Two sliders 702 are fixedly connected to the two ends of a shaft 6021. The sliders 702 slide along the length of the slide rail 701, and guide ribs are fixedly mounted on the slide rail 701. The sliders 702 are adapted to the slide rail 701 so that they do not rotate during sliding. It also includes a rotatable threaded rod 703. Specifically, the threaded rod 703 is rotatably connected to the housing 1 and can rotate without changing its position. The threads on both sides of the threaded rod 703 are opposite and threadedly connected to threaded blocks 704, meaning that when the threaded rod 703 rotates, the two threaded blocks 704 move closer or further apart synchronously. An elastic component 705 is rotatably connected to the threaded block 704 at one end, which is rotatably connected to the slider 702. Specifically, the threaded rod 703 is horizontally positioned with its midpoint located below the slide rail 701. The distances of the two threaded blocks 704 from the midpoint of the threaded rod 703 are always equal, so that the two elastic components 705 and the threaded rod 703 form an isosceles triangle.

[0046] The operating principle of the pressure regulating unit 7 is as follows: when pressure needs to be adjusted, the threaded rod 703 is rotated to make the two threaded blocks 704 move closer to each other or further away. When they move away from each other, the elastic component 705 extends and the deformation potential energy decreases; conversely, it increases. The deformation potential energy is converted into the force of the lower roller 602 moving upward through the slider 702. The lower roller 602 abuts against the fabric 3 to cause deformation, squeezing the internal solvent away from the fabric 3.

[0047] Furthermore, the pressure regulating unit 7 also includes several mounting seats 706 fixedly connected to the housing 1. The slide rail 701 and the threaded rod 703 are all fixedly or rotatably connected to the housing 1 through the mounting seats 706. The pressure regulating unit 7 also includes a pry bar 707, one end of which passes through the threaded rod 703 and is slidably connected to the threaded rod 703, making it more convenient and effortless to rotate the threaded rod 703 using the pry bar 707. Correspondingly, the side wall of the housing 1 is also provided with a clearance groove 110, which corresponds to the pry bar 707 to prevent the side wall of the housing 1 from jamming the pry bar 707.

[0048] Furthermore, the elastic component 705 includes an elastic element and a linear telescopic rod. The elastic element is a spring, and the linear telescopic rod is located inside the elastic element and coaxial with the elastic element to prevent the elastic component 705 from being accidentally bent and damaged.

[0049] Combination Figure 1 and Figure 4Side shells 103 are fixedly installed on opposite sides of the housing 1. The side shells 103 enclose the pressure regulating unit 7. The pry bar 707 is located on the outside of the side shells 103 for easy use. The side shells 103 are sealed to the side wall of the housing 1 to prevent volatile solvents from overflowing from the slot 111 and polluting the outside air. Furthermore, the side shells 103 also enclose the agitator 4 located on the outside of the housing 1, forming a double seal at the connection between the shaft 401 and the side wall of the housing 1, so that even if leakage occurs at the connection between the shaft 401 and the side wall of the housing 1, it will not overflow to the outside.

[0050] To achieve better drying results after dry cleaning, Example 4 was designed.

[0051] like Figure 6 , Figure 7 As shown, the basic structure of the textile dry cleaning equipment in this embodiment is basically the same as that of the textile dry cleaning equipment in this application, the difference being the specific structure of the drying process.

[0052] It also includes a preheating unit 8, which is embedded in the bottom wall of the inner cavity of the housing 1 and is located between the extrusion unit 6 and the drying unit 9. The heating width of the preheating unit 8 matches the width of the textile, and the heating length of the preheating unit 8 is determined according to the moving speed of the textile, heating efficiency, etc., so it is not limited here.

[0053] The preheating unit 8 is a heating plate, a mature commercially available product in the industrial heating field. Its typical structure usually includes a metal substrate with good thermal conductivity, and heating elements integrated inside or on the lower surface of the substrate, such as heating tubes, heating wires, or heat-conducting oil channels. It is equipped with a temperature sensor and a temperature control interface, enabling precise setting and closed-loop regulation of the plate surface temperature. Its heating power, plate size, and surface treatment process can all be determined by those skilled in the art through conventional design or direct selection and procurement, based on the width of the textile being processed, the running speed, and the required preheating temperature. Since the specific internal structure, heating method, and temperature control circuit of the preheating unit 8 are not the technical aspects to be improved in this invention, and can be fully implemented using existing technologies, they will not be described in detail here.

[0054] like Figure 6As shown, the drying unit 9 also includes an arc-shaped component 901, which is coaxial with the adsorption cylinder 904 and is arc-shaped. The arc-shaped component 901 wraps around the top of the adsorption cylinder 904, meaning the radius of the arc-shaped component 901 is larger than the radius of the adsorption cylinder 904, forming an arc-shaped drying channel between the arc-shaped component 901 and the adsorption cylinder 904. Two connecting rollers 902 are located at both ends of the arc-shaped component 901, and the distances of the connecting rollers 902 from the inner bottom wall of the housing 1 and from the outer surface of the adsorption cylinder 904 are matched with the thickness of the fabric 3, allowing the fabric 3 to smoothly move from the inner bottom wall of the housing 1 to the outer surface of the adsorption cylinder 904 or from the outer surface of the adsorption cylinder 904 to the inner bottom wall of the housing 1 via the connecting rollers 902. A heating component 911 is fixedly installed on the inner wall of the arc-shaped component 901, which heats and keeps the fabric 3 at a high temperature, making the solvent easier to vaporize.

[0055] It should be noted that, since external gas needs to pass through the fabric 3 and enter the adsorption cylinder 904 under pressure difference during the drying process, a certain gap must be maintained on the outside of the fabric 3 to allow airflow. Therefore, the heating component 911 operates using a non-contact heat transfer method. This type of non-contact heating module is a mature product on the market, and its specific implementation can be selected by those skilled in the art according to the working conditions, such as an infrared radiation heating module, a hot air auxiliary heating module, or an induction metal target radiation module, etc., which are not limited here.

[0056] like Figure 7 As shown, the drying unit 9 also includes a fixing rod 903, which is located inside the adsorption cylinder 904 and fixedly connected to the housing 1. An airtight block 910 is fixedly installed on the fixing rod 903. Annular side plates 907 located on both sides of the adsorption cylinder 904 are fixedly installed on the fixing rod 903. Bearings 908 are sleeved on the annular side plates 907, and the adsorption cylinder 904 is sleeved on the outer wall of the bearings 908. A gear ring 909 is sleeved on one side of the outer wall of the adsorption cylinder 904. A gear 906 meshing with the gear ring 909 is fixedly connected to the output end of the second motor 913, so that the second motor 913 drives the adsorption cylinder 904 through the gear 906 and the gear ring 909. The fixing rod 903, the two annular side plates 907, and the bearings 908 cooperate to seal both ends of the adsorption cylinder 904, allowing air to enter only through the suction hole 905 inside the adsorption cylinder 904. Specifically, one of the annular side plates 907 is provided with an air extraction hole 912, and the air extraction machine is connected to the inner cavity of the adsorption cylinder 904 through the air extraction hole 912.

[0057] like Figure 6As shown, the obstruction height of the airtight block 910 near the outlet of the housing 1 is higher than the height of the connecting roller 902 near the outlet of the housing 1. That is, before the fabric 3 separates from the adsorption cylinder 904, the air suction hole 905 in the front section of the separation is blocked by the airtight block 910, so the fabric 3 loses its adsorption force in the front section of the separation from the adsorption cylinder 904, making the separation of the fabric 3 from the adsorption cylinder 904 smoother.

[0058] Further explanations and / or improvements can be made to the above-mentioned dry cleaning equipment for textiles based on actual needs: Fabric 3 is laid out flat by an unwinding device and then wound up by a winding device after cleaning. Both the unwinding and winding devices are standard equipment commonly used in the textile, film, and roll material processing industries. Their typical structure usually includes an air shaft or mechanical chuck for clamping the roll, a speed-regulating motor for driving the roll's rotation, and a tension control unit for maintaining constant or varying tension according to a preset curve. Depending on process requirements, optional auxiliary components such as automatic web guiding devices and fabric splicing mechanisms can also be added. A large number of mature commercially available products of this type are readily available for direct selection and purchase. Their specific specifications, drive methods, and control logic can be determined by those skilled in the art based on parameters such as the width, roll diameter, running speed, and tension requirements of the textile, through conventional design or market selection. Since the specific construction of the unwinding and winding devices is not the technical content to be improved in this invention, and can be fully implemented using existing technologies, it will not be described in detail here.

[0059] It should be noted that among the rollers in contact with the fabric 3 involved in the equipment of this invention, such as the height limiting roller 106, the upper roller 601, the lower roller 602, and the connecting roller 902, at least some of these rollers are configured as active drive rollers to pull the fabric 3 continuously along a preset path. The driving method of the active drive rollers is a conventional technique in the art, typically involving a speed-regulating motor connected to the roller shaft via a chain, synchronous belt, or gear transmission mechanism, allowing it to rotate at a controllable speed. In specific implementations, since the pressure on the fabric 3 is relatively high at the upper roller 601 and the lower roller 602, at least one of the upper roller 601 and the lower roller 602 needs to have an active drive function. The other rollers, including which are configured as active drive rollers, which are passive driven rollers, and the speed matching and tension coordination between each roller, can all be determined by those skilled in the art through conventional design based on the equipment's path layout, the tension characteristics of the textile, and the process speed requirements. Since the drive configuration and transmission structure of the rollers are not the technical content to be improved in this invention, and can be fully implemented using existing mature technologies, they will not be described in detail here.

[0060] Since the swelling effect of organic solvents on most fibers is much smaller than that of water, fabric 3 still has sufficient mechanical strength when containing organic solvents, and can withstand the mechanical extrusion force of extrusion unit 6 without causing fiber damage.

[0061] In this application, all devices and components whose structures are not described are commercially available devices or components.

[0062] In summary: This invention uses an air curtain 102 to prevent solvent vapor leakage, and a height-limiting roller 106 inside the solvent tank 104 to ensure that the fabric 3 is fully immersed and degreased. The extrusion unit 6, combined with the pressure regulating unit 7, extrudes most of the solvent from the fabric and returns it to the solvent recovery unit 2. After being extruded, the fabric 3 enters the drying unit 9, where the negative pressure drying of the adsorption cylinder 904 replaces the traditional long hot air drying room, significantly shortening the overall length of the machine. Furthermore, the entire process involves closed-loop solvent recovery, which not only protects water-sensitive fabrics such as silk and viscose from deformation, but also achieves the effects of equipment miniaturization, continuous and efficient dry cleaning, and energy saving and environmental protection.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A dry cleaning equipment for textiles, characterized in that: It includes a housing (1), a solvent recovery unit (2), an extrusion unit (6), a drying unit (9), and two pressure regulating units (7); Air curtains (102) are provided at the inlet and outlet of the housing (1), and a solvent tank (104) is provided inside the housing (1). Height limiting rollers (106) are fixedly installed on both sides of the solvent tank (104) to immerse the fabric (3) in the solvent in the solvent tank (104). The solvent recovery unit (2) is connected to the solvent tank (104). The extrusion unit (6) includes an upper roller (601) fixedly installed in the housing (1) and an upper roller (602) slidably connected to the housing (1). The output ends of the two pressure adjustment units (7) are respectively connected to the two ends of the lower roller (602) to drive the lower roller (602) to cooperate with the upper roller (601) to extrude the fabric (3). The drying unit (9) includes an adsorption cylinder (904) rotatably connected inside the housing (1), the adsorption cylinder (904) having a plurality of air suction holes (905), a second motor (913) for driving the adsorption cylinder (904) to rotate, an airtight block (910) fixed in position for blocking the air suction holes (905) at the bottom of the adsorption cylinder (904), and connecting rollers (902) located on both sides of the adsorption cylinder (904). The fabric (3) passes around the connecting rollers (902) to cover the top of the adsorption cylinder (904), and also includes a vacuum pump whose suction end is connected to the inner cavity of the adsorption cylinder (904). The exhaust end of the vacuum pump is connected to the solvent recovery unit (2).

2. The textile dry cleaning equipment according to claim 1, characterized in that: A first fan (101) is fixedly installed on one side of each of the two air curtains (102), and a soft baffle (112) is provided on one side of each of the two first fans (101).

3. The textile dry cleaning equipment according to claim 2, characterized in that: It also includes a gas recovery unit (5), which is fixedly installed inside the housing (1) and located above the solvent tank (104). The gas recovery unit (5) includes a recovery box (501) and a second fan. The second fan is connected to the inner cavity of the recovery box (501). Gas recovery holes (502) are respectively opened on both sides of the bottom of the recovery box (501).

4. The textile dry cleaning equipment according to claim 1, characterized in that: It also includes an agitation mechanism (4), which includes a plurality of shafts (401) rotatably connected to the housing (1), a baffle plate (402) fixedly installed on the shafts (401) and located in the solvent tank (104), a first motor (404) fixed in position, and a plurality of transmission components (403) for drivingly connecting the plurality of shafts (401) to the output end of the first motor (404).

5. The textile dry cleaning equipment according to claim 1, characterized in that: The housing (1) has an extrusion groove (109) inside, and the extrusion unit (6) is located inside the extrusion groove (109). The extrusion groove (109) is connected to the solvent recovery unit (2).

6. The textile dry cleaning equipment according to claim 5, characterized in that: The housing (1) has strip holes (111) on both sides, and the two ends of the shaft rod (6021) included in the lower roller (602) pass through the two strip holes (111). The pressure regulating unit (7) includes a fixed slide rail (701), a slider (702) slidably connected to the slide rail (701), and the two ends of the shaft rod (6021) are respectively fixedly connected to the two sliders (702). It also includes a rotatable threaded rod (703). The threads on both sides of the threaded rod (703) are opposite and are respectively threaded to threaded blocks (704). An elastic component (705) with one end rotatably connected to the slider (702) is rotatably connected to the threaded block (704).

7. The textile dry cleaning equipment according to claim 1, characterized in that: It also includes a preheating unit (8), which is embedded in the bottom wall of the inner cavity of the housing (1) and is located between the extrusion unit (6) and the drying unit (9).

8. The textile dry cleaning equipment according to claim 7, characterized in that: The drying unit (9) also includes an arc-shaped component (901), which wraps around the top of the adsorption cylinder (904). Two connecting rollers (902) are located at the two ends of the arc-shaped component (901), and a heating component (911) is fixedly installed on the inner wall of the arc-shaped component (901).

9. A textile dry cleaning equipment according to claim 8, characterized in that: The drying unit (9) also includes a fixing rod (903), which is located inside the adsorption cylinder (904) and fixedly connected to the shell (1). The airtight block (910) is fixedly installed on the fixing rod (903). Annular side plates (907) located on both sides of the adsorption cylinder (904) are fixedly installed on the fixing rod (903). Bearings (908) are sleeved on the annular side plates (907). The adsorption cylinder (904) is sleeved on the outer wall of the bearing (908). A gear ring (909) is sleeved on one side of the outer wall of the adsorption cylinder (904). A gear (906) meshing with the gear ring (909) is fixedly connected to the output end of the second motor (913).

10. A dry cleaning equipment for textiles according to claim 9, characterized in that: The obstruction height of the airtight block (910) near the outlet side of the housing (1) is higher than the height of the connecting roller (902) near the outlet side of the housing (1).

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