A textile impregnation coating integrated device

Abstract

The application discloses a kind of textile dip coating integrated equipment, the present application relates to textile processing equipment technical field, including: equipment is provided with micro-liquid film part and wedge extrusion part along the direction of textile conveying, micro-liquid film part and wedge extrusion part below are provided with floater control part, floater control part is provided with the liquid return shell of upper end opening, the liquid return shell is formed by communicating with channel guide section and box recovery section, the bottom of channel guide section is inclined to box recovery section, vertically arranged liquid baffle is fixed in box recovery section, and liquid baffle separates box recovery section into reflux cavity and drainage cavity, the equipment is provided with floater control part and floater part, so that float ball can be lifted with the change of liquid level in liquid return shell, and the flow area between second liquid inlet pipe and infusion tube is adjusted by lever arm, rotating rod and connecting rod drive valve needle to move, so that, equipment can automatically adjust the coating liquid supply amount entering micro-liquid film part according to the liquid level in liquid return shell.

Description

Technical Field

[0001] This invention relates to the field of textile processing equipment technology, specifically to an integrated textile impregnation and coating equipment. Background Technology

[0002] When textiles undergo functional finishing, they typically require processing steps such as impregnation, coating, squeezing, and liquid return. Impregnation allows the finishing or functional liquid to penetrate the interior of the textile, while coating forms a liquid layer on the surface of the textile to improve its waterproof, flame-retardant, antibacterial, abrasion-resistant, or other functional properties.

[0003] When existing post-impregnation coating equipment is in operation, the amount of liquid absorbed by the textile, the running speed, and the amount of liquid returned can change, which can easily lead to unstable supply of coating liquid. When the supply of liquid is too large, liquid can easily accumulate and drip on the surface of the textile, resulting in waste of coating liquid. When the supply of liquid is insufficient, problems such as insufficient coating, local lack of liquid, or discontinuous liquid film may occur.

[0004] To address the issue of unstable liquid supply, existing equipment typically uses methods such as liquid supply pumps, regulating valves, level sensors, electric valves, or manual adjustment to control the flow rate of the coating liquid. However, the electric control method requires the installation of sensors and control systems, which are complex in structure and have high maintenance costs. Manual adjustment relies on operating experience and is difficult to adjust continuously in a timely manner according to changes in the liquid level, which can easily lead to adjustment lag. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated textile impregnation and coating device, comprising: a micro-liquid film section and a wedge-shaped extrusion section along the textile conveying direction; a float control section below the micro-liquid film section and the wedge-shaped extrusion section; a return liquid shell with an open upper end in the float control section; the return liquid shell being formed by connecting a trough-shaped guide section and a box-shaped recovery section; the bottom of the trough-shaped guide section tilting towards the box-shaped recovery section; a vertically arranged baffle plate fixed inside the box-shaped recovery section; the baffle plate dividing the box-shaped recovery section into a return flow chamber and a discharge chamber; a float section installed between the return flow chamber and the discharge chamber; and a float section within the discharge chamber. The system is equipped with a main liquid inlet section for liquid inlet. The inlet end of the float section is connected to the main liquid inlet section, and the outlet end is connected to the micro-liquid film section. Liquid channels are opened in the middle and bottom of the baffle plate. The first adjustment section adjusts the opening of the middle liquid channel. The middle liquid channel is used to connect the buffer liquid supply section and the return chamber. A cleaning return liquid switching section is set in the drain chamber. The connecting section adjusts the opening of the bottom liquid channel. The drain chamber is connected to the cleaning return liquid switching section. With the above structure, the textile can complete surface coating, squeezing and draining, return liquid collection and liquid supply adjustment in sequence during the conveying process, making the coating process of the impregnated textile more continuous and stable.

[0006] Preferably, the trough-shaped guide section is located below the micro-liquid film section, the box-shaped recovery section is located below the wedge-shaped extrusion section, and a porous support plate is fixed to the top of the return liquid shell, which is located below the textile conveying path. A guide plate and a wedge-shaped baffle are fixed inside the trough-shaped guide section, with the lower end of the guide plate facing the box-shaped recovery section. The wedge-shaped baffle is arranged along the guide direction of the trough-shaped guide section, dividing the return space inside the return liquid shell into multiple parallel return liquid zones. Each return liquid zone is connected to a corresponding return liquid cavity, and each return liquid zone is equipped with a corresponding buffer supply section and a float. The sub-section allows for zoned control of different return liquid zones based on their respective return liquid volumes. A connecting pipe is fixed to the outer wall of the return liquid shell, connecting the outlet end of the float section and the micro-liquid film section. An acrylic plate is installed on the side wall of the box-shaped recovery section, corresponding to the return cavity. A center block is fixed on the baffle plate, and an overflow groove connecting the adjacent discharge cavity is opened at the top of the baffle plate. A porous support plate can support the textile and allow the extruded coating liquid to enter the return liquid shell downwards. The guide plate and wedge-shaped baffle can guide the return liquid into the corresponding return liquid zone and reduce the lateral flow of liquid.

[0007] The acrylic plate and center block make it easy for the operator to observe the liquid level, while the overflow trough can provide auxiliary drainage when the liquid level is too high.

[0008] Preferably, the bottom of the baffle plate has a bottom groove along its length, and the bottom liquid channel communicates with the bottom groove. The connecting part includes a connecting block slidably installed in the bottom groove. Multiple first stops are fixedly installed at equal intervals on the outer side of the connecting block. The first stops are slidably connected to the bottom groove, and part of the first stops extends into the bottom liquid channel. One end of the connecting block extends through the return liquid shell to the outside and is fixedly connected to a first handle. A first tension spring is provided on the side of the return liquid shell near the first handle. One end of the first tension spring is fixed to the first handle, and the other end is fixed to the outer wall of the return liquid shell. When the first handle moves the connecting block along the bottom groove, the first stops change their blocking area on the bottom liquid channel. Thus, the operator can adjust the effective liquid flow area of ​​the bottom liquid channel through the first handle to maintain an appropriate liquid flow between the return chamber and the drain chamber.

[0009] Preferably, the baffle plate has a central groove in the middle, and the central liquid channel is connected to the central groove. A first connecting post is slidably arranged in the central groove. One end of the first connecting post passes through the baffle plate and extends to the outside of the return liquid shell. A second stop is fixedly connected to the first connecting post. One end of the first connecting post passes through the return liquid shell and extends to the outside and is fixedly connected to a second handle. A second tension spring is connected between the second handle and the return liquid shell. When the second handle moves the first connecting post along the central groove, the second stop changes its blocking area of ​​the central liquid channel. By adjusting the opening of the central liquid channel, the replenishment or overflow state between the buffer supply section and the return cavity can be controlled to cooperate with the float section for liquid level feedback adjustment.

[0010] Preferably, the main liquid inlet section is provided with a main liquid inlet pipe fixed in the return liquid shell. The main liquid inlet pipe is connected to the first liquid inlet pipe and the circular pipe respectively. The first diverting disc is rotatably disposed in the main liquid inlet pipe. A diverting circular groove is opened on the first diverting disc. A cylinder is fixedly inserted through the first diverting disc. One end of the cylinder passes through the main liquid inlet pipe and is fixedly connected to the first magnetic handle. Two magnetic plates are fixed on the outer wall of the main liquid inlet pipe near one end. The first magnetic handle is magnetically engaged with the magnetic plates.

[0011] Preferably, the buffer supply section is located inside the drain chamber. The buffer supply section includes an elastic bladder that is fixedly connected to the inner wall of the return chamber by a limiting member. The top of the elastic bladder is connected to the first inlet pipe through a diversion pipe, and the bottom of the elastic bladder is connected to the manifold. The manifold is fixed on the baffle plate and is connected to the return chamber through the middle liquid channel.

[0012] Preferably, the float section includes a fixed shaft fixed to the inner wall of the return liquid housing, a lever arm rotatably sleeved on the fixed shaft at its middle part, a float ball fixedly connected to one end of the lever arm near the return cavity, and the other end of the lever arm rotatably connected to the upper end of a rotating rod via a pin. The lower end of the rotating rod is rotatably connected to the upper end of a connecting rod, and the lower end of the connecting rod is fixedly connected to a valve needle. A valve body is fixedly connected to the inner wall of the return liquid housing via a connector, and the valve needle is slidably inserted into the valve body. The connecting rod extends into the valve cavity of the valve body and is slidably connected to the valve body. The valve body is connected to the second inlet pipe and the delivery pipe, respectively. The second inlet pipe is connected to the circular pipe, and the delivery pipe is connected to the connecting pipe. The elastic bladder can temporarily store the coating liquid and provide buffer replenishment to the return cavity during the initial start-up or when the liquid level fluctuates, so that the float section can enter a stable adjustment state more quickly.

[0013] Preferably, the cleaning return liquid switching unit is located outside the return liquid shell. The cleaning return liquid switching unit includes a liquid outlet pipe fixed to the side of the return liquid shell. Multiple liquid outlet square shells are fixedly installed at equal intervals on the side of the liquid outlet pipe. Multiple second diverting discs are rotatably arranged inside the liquid outlet pipe. A second connecting post is fixedly connected to the outer wall of the second diverting disc. One end of the second connecting post extends out of the liquid outlet pipe and is fixedly connected to a second magnetic handle. A square groove and a cleaning circular groove are formed on the second diverting disc. When the square groove connects the liquid outlet square shell and the liquid outlet pipe, it forms a drainage passage. When the cleaning circular groove connects the cleaning pipe and the cleaning spray shell, it forms a cleaning passage. During normal operation, the drainage passage is used to discharge or recover the coating liquid in the drainage chamber. During cleaning, the cleaning passage is used to send the cleaning liquid into the cleaning spray shell to rinse the inside of the return liquid shell.

[0014] Preferably, the micro-liquid film section is provided with a first housing fixed to the top of the return liquid shell. An injection nozzle is fixed on the first housing. The injection nozzle is connected to the connecting pipe through a liquid guide branch pipe. Multiple liquid collection cavities are opened inside the first housing. An injection pipe is installed at the lower end of the liquid collection cavity. The liquid collection cavity is connected to the injection nozzle and the injection pipe respectively. A magnetic suction plate and a limiting plate are fixed on the outer wall of the first housing. The magnetic suction plate magnetically attracts a coating soft plate. The coating soft plate is limited by the limiting plate. A coating groove is opened at the bottom of the coating soft plate.

[0015] Preferably, the wedge-shaped extrusion section includes a third housing fixed to the top of the return liquid housing, a threaded housing fixed to the third housing, a threaded column threadedly connected to the threaded housing, the top of the threaded column passing upward through the third housing and fixed with a handle, and the unthreaded exterior of the threaded column slidingly contacting the third housing, the bottom of the threaded column rotatably connected to the connecting frame via a mounting shell, the connecting frame slidingly engaging with the limiting shell, a wedge block fixed to the bottom of the connecting frame, the bottom surface of the wedge block gradually approaching the porous support plate along the textile conveying direction, a roller rotatably connected to the bottom of the wedge block, and an air jet groove also provided at the bottom of the wedge block, which is connected to the air inlet hose. By rotating the handle, the extrusion gap between the wedge block and the porous support plate can be adjusted. The wedge block is used to gradually squeeze out excess coating liquid from the textile, the roller is used to reduce friction, and the air jet groove is used to assist in blowing away localized accumulated liquid.

[0016] This invention provides an integrated impregnation and coating device for textiles. It has the following beneficial effects: (i) The integrated textile impregnation and coating equipment is equipped with a float control unit and a float unit, which allows the float ball to rise and fall with the change of liquid level in the return liquid shell. The valve needle is moved by the lever arm, rotating rod and connecting rod, thereby adjusting the flow area between the second liquid inlet pipe and the liquid delivery pipe. Thus, the equipment can automatically adjust the supply of coating liquid into the micro liquid film part according to the liquid level in the return liquid shell, reducing the situation of excessive or insufficient liquid supply.

[0017] (ii) The integrated textile impregnation and coating equipment forms a mechanical liquid level feedback structure through a float, lever arm and valve needle, so that the float part can be in a state of continuous liquid flow and continuous feedback adjustment during normal operation. This structure does not require additional electronic control sensors or electric valves, and can realize automatic adjustment of the coating liquid supply with a relatively simple mechanical structure, which is convenient for subsequent maintenance.

[0018] (III) The integrated textile impregnation and coating equipment, by setting up a connecting part and a cleaning return liquid switching part, keeps the coating liquid in the return liquid shell in a slow flow state during normal operation. The connecting part is kept in a slightly connected state, and the cleaning return liquid switching part is kept in a normal drainage connection state. This keeps the amount of return liquid entering the area where the float part is located roughly balanced with the amount of liquid discharged, which helps to maintain the liquid level near the float part within the normal range and reduces the impact of large fluctuations in liquid level on the liquid supply regulation.

[0019] (iv) The integrated textile impregnation and coating equipment, by setting up a micro-liquid film section and a wedge-shaped extrusion section, can first release the coating liquid in a thin liquid layer onto the surface of the textile after impregnation, and then gradually extrude the textile to make the excess coating liquid flow back into the return liquid shell, which is conducive to the redistribution of the coating liquid on the surface and inside of the textile, thereby improving the situation of local lack of liquid, local accumulation of liquid or uneven liquid on the surface of the textile after impregnation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure on the back of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the microfluidic membrane portion of the present invention; Figure 5 This is an exploded view of the microliquid film portion of the present invention; Figure 6 This is a schematic diagram of the structure of the coated flexible plate of the present invention; Figure 7 This is a schematic diagram of the structure of the float control unit of the present invention; Figure 8 This is a schematic diagram of the structure at point A of the present invention; Figure 9 This is a schematic diagram of the liquid return shell of the present invention; Figure 10 This is a cross-sectional view of the liquid return shell of the present invention; Figure 11 This is a schematic diagram of the structure of the buffer supply section of the present invention; Figure 12 This is a schematic diagram of the structure of the connecting part of the present invention; Figure 13 This is a schematic diagram of the structure of the first adjustment part of the present invention; Figure 14 This is a schematic diagram of the main liquid inlet section of the present invention; Figure 15 This is a schematic diagram of the structure at point B of the present invention; Figure 16 This is a schematic diagram of the structure of the float section of the present invention; Figure 17 This is a schematic diagram of the cleaning return liquid switching unit of the present invention; Figure 18 This is a schematic diagram of the structure of the second flow-diverting disc of the present invention; Figure 19 This is a schematic diagram of the wedge-shaped extrusion section of the present invention; Figure 20 This is an exploded view of the wedge-shaped extrusion section of the present invention; Figure 21 This is a schematic diagram of the connecting pipe of the present invention.

[0021] In the diagram: 1. Microfilm section; 2. Float control section; 3. Wedge-shaped extrusion section; 11. First housing; 12. Liquid guide branch pipe; 13. Injection nozzle; 14. Liquid collection chamber; 15. Injection pipe; 16. Fixed magnetic suction plate; 17. Limiting plate; 18. Coated flexible plate; 19. Coating tank; 21. Support leg; 22. Return liquid shell; 23. Connecting pipe; 24. Wedge-shaped partition; 25. Porous support plate; 26. Flow guide plate; 27. Float section; 28. Buffer liquid supply section; 29. 41. Cleaning return switching section; 42. First adjustment section; 43. Baffle plate; 44. Main liquid inlet section; 45. Connecting section; 46. Acrylic plate; 47. Overflow groove; 481. Center block; 282. Elastic bladder; 283. First liquid inlet pipe; 284. Diverter pipe; 285. Manifold shell; 446. First stop block; 447. Connecting block; 448. First tension spring; 449. First handle; 410. Second stop block; 411. First connecting column; 412. Second tension spring; 414. Second handle; 431. Main inlet pipe; 432. Cylinder; 433. First diverter disc; 434. Diverter groove; 435. Circular tube; 436. Magnetic plate; 437. First magnetic handle; 271. Float; 272. Lever arm; 273. Fixed shaft; 274. Pin; 275. Rotating rod; 276. Connecting rod; 277. Valve body; 278. Valve needle; 279. Infusion tube; 2710. Second inlet pipe; 291. Outlet square shell; 292. Second diverter disc; 293. Liquid outlet pipe; 294. Second connecting post; 295. Second magnetic handle; 296. Cleaning pipe; 297. Cleaning spray housing; 298. Cleaning circular groove; 299. Square groove; 31. Third housing; 32. Wedge block; 33. Air inlet hose; 34. Connecting frame; 35. Locking block; 36. Turning handle; 37. Threaded housing; 38. Threaded post; 39. Limiting housing; 311. Roller; 312. Jet jet groove; 313. Mounting housing. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 21 The equipment is provided with a micro-liquid film section 1 and a wedge-shaped extrusion section 3 along the textile conveying direction. The micro-liquid film section 1 is located before the textile enters the wedge-shaped extrusion section 3 and is used to release coating liquid onto the surface of the textile after impregnation treatment, so that a liquid film is first formed on the surface of the textile. The wedge-shaped extrusion section 3 is located behind the micro-liquid film section 1 and is used to squeeze the textile that has been coated with coating liquid, so that the excess coating liquid in the textile can be discharged downward.

[0024] Below the micro-liquid film section 1 and the wedge-shaped extrusion section 3, there is a float control section 2. The float control section 2 is located below the coating and extrusion positions. It can receive the coating liquid dripping from the micro-liquid film section 1 and the excess coating liquid squeezed out by the wedge-shaped extrusion section 3, so that the falling liquid enters the subsequent liquid level adjustment area.

[0025] The float control unit 2 is provided with a return liquid shell 22 with an open top. The upper opening of the return liquid shell 22 faces the textile conveying path, so that the coating liquid can fall directly into the return liquid shell 22. The return liquid shell 22 is formed by connecting a trough-shaped guide section and a box-shaped recovery section. The bottom of the trough-shaped guide section is inclined towards the box-shaped recovery section. The trough-shaped guide section is a long trough-shaped structure, and its bottom wall gradually decreases along the liquid flow direction. The box-shaped recovery section is a box structure with an open top, connected to the lower end of the trough-shaped guide section. The coating liquid falling into the trough-shaped guide section can flow into the box-shaped recovery section along the inclined bottom wall, thereby reducing the liquid retention in the trough-shaped guide section.

[0026] A vertically arranged baffle plate 42 is fixed inside the box-shaped recovery section. The baffle plate 42 is a vertical plate structure, with its lower edge fixed to the bottom wall of the box-shaped recovery section and its two side edges fixed to the opposite inner walls of the box-shaped recovery section. This allows the baffle plate 42 to stably divide the internal space of the box-shaped recovery section, dividing it into a reflux chamber and a discharge chamber. The reflux chamber is close to the trough-shaped guide section and is used to receive the coating liquid introduced by the trough-shaped guide section. A float part 27 is installed between the reflux chamber and the discharge chamber. The discharge chamber is located away from the trough-shaped guide section and is used to discharge the coating liquid. Alternatively, the reflux liquid can be separated by the baffle plate 42. The reflux liquid flows in the direction of the reflux chamber and the discharge chamber to avoid disorderly diffusion of liquid in the box-shaped recovery section. The inlet end of the float part 27 is connected to the main inlet part 43, and the outlet end is connected to the micro liquid film part 1. Liquid channels are opened in the middle and bottom of the baffle plate 42. The first adjustment part 41 adjusts the opening of the middle liquid channel. The middle liquid channel is used to connect the buffer supply part 28 and the reflux chamber. The connecting part 44 adjusts the opening of the bottom liquid channel. The discharge chamber is connected to the reflux liquid switching part 29.

[0027] Please continue reading. Figures 7 to 10 The trough-shaped guide section is located below the micro-liquid film section 1, and the box-shaped recovery section is located below the wedge-shaped extrusion section 3. The area below the micro-liquid film section 1 mainly receives the coating liquid dripping during the coating process, while the area below the wedge-shaped extrusion section 3 mainly receives the excess coating liquid that is extruded. Therefore, the box-shaped recovery section is located below the wedge-shaped extrusion section 3 to facilitate the centralized collection of the extruded liquid.

[0028] A perforated support plate 25 is fixed to the top of the return liquid shell 22. The perforated support plate 25 is located below the textile conveying path and is used to support and limit the textile. It cooperates with the wedge extrusion part 3 to extrude the textile. The porous support plate 25 is a plate-shaped structure, and its edge is fixed to the upper edge of the return liquid shell 22, so that the porous support plate 25 covers the return liquid inlet area under the textile. Multiple liquid passage holes are opened on the plate surface of the porous support plate 25. The coating liquid dripping from the surface of the textile and the coating liquid extruded by the wedge extrusion part 3 can first fall onto the porous support plate 25, and then enter the return liquid shell 22 through the liquid passage holes on the porous support plate 25.

[0029] A guide plate 26 and a wedge-shaped baffle 24 are fixed inside the trough-shaped guide section. The lower end of the guide plate 26 faces the box-shaped recovery section. The guide plate 26 is located below the porous support plate 25 and is used to receive the coating liquid falling through the porous support plate 25 and guide the coating liquid into the trough-shaped guide section. Finally, the coating liquid flows into the box-shaped recovery section along the trough-shaped guide section.

[0030] The wedge-shaped baffle 24 is set along the flow direction of the trough-shaped guide section. The wedge-shaped baffle 24 is a baffle structure that extends along the liquid flow direction of the return liquid shell 22. Multiple wedge-shaped baffles 24 are arranged at intervals along the width direction of the return liquid shell 22, thereby dividing the return space in the return liquid shell 22 into multiple parallel return liquid zones. Each return liquid zone corresponds to a different return liquid position in the width direction of the textile, so that the coating liquid falling from different areas of the textile can enter the corresponding return liquid zone. The wedge-shaped baffle 24 can also restrict the lateral diffusion of the coating liquid in each return liquid zone, so that the coating liquid in each return liquid zone enters the box-shaped recovery section along the corresponding flow path.

[0031] When multiple return liquid zones are arranged in parallel, each return liquid zone is equipped with a baffle plate 42. The corresponding segments of the baffle plate 42 form a return flow chamber and a drain chamber in each return liquid zone. That is to say, each return liquid zone can have a corresponding return flow chamber and a drain chamber, so that the liquid level changes in different return liquid zones can be sensed and adjusted separately. A corresponding float part 27 is provided between the return flow chamber and the drain chamber of each return liquid zone. A corresponding buffer supply part 28 is provided on one side of each return liquid zone. The buffer supply part 28 is used to replenish and buffer the corresponding return liquid zone. The float part 27 is used to adjust the supply volume into the micro liquid membrane part 1 according to the liquid level changes of the corresponding return liquid zone. By setting buffer supply parts 28 and float parts 27 in multiple return liquid zones respectively, the equipment can perform zoned control of the return liquid volume at different positions in the width direction of the textile, avoiding the return liquid volume in a single area being too large or too small, which would affect the overall supply stability.

[0032] A connecting pipe 23 is fixed to the outer wall of the return liquid shell 22. The connecting pipe 23 connects the liquid outlet end of the float part 27 and the micro liquid film part 1. The connecting pipe 23 serves as a liquid supply channel between the float part 27 and the micro liquid film part 1. The coating liquid adjusted by the float part 27 is transported to the micro liquid film part 1 through the connecting pipe 23. When the return liquid shell 22 is provided with multiple return liquid zones, multiple connecting pipes 23 are provided accordingly to connect to the liquid outlet end of the float part 27 of the corresponding return liquid zone.

[0033] Acrylic plates 45 are installed on the side walls of the box-shaped recovery section. The acrylic plates 45 correspond to the reflux chambers. The acrylic plates 45 are transparent observation plates. Their installation positions correspond to the reflux chambers, allowing the operator to observe the liquid level in each reflux chamber from the outside of the equipment. When multiple reflux zones are set up side by side, multiple acrylic plates 45 are installed at equal intervals to divide the reflux chamber into multiple sections so as to observe the liquid level status of different reflux zones.

[0034] A center block 47 is fixed on the baffle plate 42. The center block 47 is located within the observation range of the acrylic plate 45 and corresponds to the normal liquid level position of the return cavity. When the operator observes the liquid level through the acrylic plate 45, he can judge whether the liquid level in the return cavity is within the normal range based on the relative position of the liquid level and the center block 47. When multiple return zones are set up in parallel, a corresponding center block 47 can be set in each return cavity so that the liquid level status of each return zone can be observed separately.

[0035] The top of the baffle plate 42 is provided with an overflow groove 46 that connects to the adjacent drain chamber. The overflow groove 46 is located on the upper part of the baffle plate 42. When the liquid level in the return chamber is too high, the coating liquid can flow into the adjacent drain chamber through the overflow groove 46, so as to avoid the float part 27 from being affected by the high liquid level in a single area. In multiple return liquid areas, the overflow groove 46 can be respectively set on the baffle plate 42 in the corresponding return liquid area to form high liquid level overflow protection in the corresponding return liquid area.

[0036] Please see Figure 12 The bottom of the baffle plate 42 is provided with a bottom groove along its length direction. Multiple bottom liquid channels are provided at equal intervals on the bottom side of the baffle plate 42. The multiple bottom liquid channels are symmetrically distributed in each return liquid area, so that some of the coating liquid in the return cavity can flow into the adjacent drain cavity along the bottom liquid channels. The bottom liquid channel is connected to the bottom slide groove. The bottom liquid channel is a long hole that passes through the baffle plate 42 laterally or other through hole that can pass liquid. The bottom liquid channel and the bottom slide groove are cross-connected. The connecting part 44 includes a connecting block 442 that is slidably installed in the bottom slide groove. The connecting block 442 is a strip-shaped connector. Multiple first blocks 441 are fixedly installed at equal intervals on the outer side of the connecting block 442. The first blocks 441 are slidably connected to the bottom slide groove, and part of the first blocks 441 extends into the bottom liquid channel. The first blocks 441 are sheet-shaped shielding members. After the first stop block 441 extends into the bottom liquid channel, it can change the liquid flow cross section of the bottom liquid channel. One end of the connecting block 442 extends through the return liquid shell 22 to the outside and is fixedly connected to the first handle 444. The first handle 444 is convenient for the operator to pull from the outside of the equipment. A first tension spring 443 is provided on the side of the return liquid shell 22 near the first handle 444. One end of the first tension spring 443 is fixed to the first handle 444, and the other end is fixed to the outer wall of the return liquid shell 22, so that the first tension spring 443 can apply a reset pulling force to the first handle 444.

[0037] When the first handle 444 moves the connecting block 442 along the bottom slide, the first stop 441 changes its blocking area on the bottom liquid channel. Specifically, when the first handle 444 is pulled, the connecting block 442 moves the first stop 441 laterally. When the overlap area between the first stop 441 and the bottom liquid channel increases, the effective liquid passage area of ​​the bottom liquid channel decreases. When the overlap area between the first stop 441 and the bottom liquid channel decreases, the effective liquid passage area of ​​the bottom liquid channel increases. The bottom liquid channel is mainly used to maintain a small flow of communication between adjacent cavities under normal liquid level conditions. Therefore, the first stop 441 does not completely close the bottom liquid channel during normal operation.

[0038] The effective liquid flow area of ​​the bottom liquid channel is adjusted by setting the first handle 444, the first stop 441, and the connecting block 442 to facilitate the rapid flow of cleaning fluid during cleaning. Specific adjustment method: By pushing the first handle 444 towards the return liquid housing 22, the first handle 444 drives the first stop block 441 to move towards the return liquid housing 22 through the connecting block 442, thereby increasing the effective liquid passage area of ​​the bottom liquid channel and facilitating the rapid discharge of cleaning fluid.

[0039] When the return liquid shell 22 is divided into multiple return liquid zones by the wedge-shaped partition 24, the bottom of the baffle plate 42 in each return liquid zone can be provided with a corresponding bottom liquid channel and connecting part 44, so that the bottom liquid flow of each return liquid zone can be adjusted separately. The connecting block 442 is set as a strip that spans multiple return liquid zones, so as to adjust the opening of the bottom liquid channel of multiple return liquid zones at the same time.

[0040] Please see Figure 13 A central groove is provided along the length of the baffle plate 42. Multiple central liquid channels are provided at equal intervals on the side of the baffle plate 42. The central liquid channels are connected to the central groove. The central groove extends laterally along the baffle plate 42. The central liquid channel is a long hole or other through hole that extends laterally through the baffle plate 42 and is set higher than the bottom liquid channel. A first connecting post 412 is slidably arranged in the central groove. One end of the first connecting post 412 passes through 42 and extends to the outside of the return liquid shell 22. The first connecting post 412 is rod-shaped.

[0041] A second stop 411 is fixedly connected to the first connecting post 412. One end of the first connecting post 412 extends through the return liquid housing 22 to the outside and is fixedly connected to a second handle 414. A part of the second stop 411 extends into the middle liquid channel. The second stop 411 is a sheet-like blocking component used to change the effective liquid flow area of ​​the middle liquid channel.

[0042] When the operator pulls the second handle 414, the second handle 414 drives the first connecting column 412 to move laterally, and the first connecting column 412 drives the second stop 411 to move synchronously. The second tension spring 413 is connected between the second handle 414 and the return liquid housing 22. One end of the second tension spring 413 is fixed on the second handle 414, and the other end is fixed on the hook part on the outer wall of the return liquid housing 22. It is used to drive the first connecting column 412 and the second stop 411 to reset after the second handle 414 is released.

[0043] When the second handle 414 moves the first connecting column 412 along the middle slide groove, the second stop 411 changes its blocking area on the middle liquid channel. The middle liquid channel is connected to the manifold 284 of the buffer supply section 28 and leads to the return cavity. When the blocking area of ​​the second stop 411 on the middle liquid channel decreases, the effective liquid passage area of ​​the middle liquid channel increases. The coating liquid temporarily stored in the elastic bladder 281 can quickly enter the return cavity through the manifold 284 and the middle liquid channel. When the blocking area of ​​the second stop 411 on the middle liquid channel increases, the effective liquid passage area of ​​the middle liquid channel decreases to reduce the amount of liquid replenished from the buffer supply section 28 to the return cavity. The bottom liquid channel is used to maintain a low-level, low-flow connection between the return cavity and the drain cavity. The middle liquid channel is used for rapid replenishment when the liquid level in the initial state or when the liquid level in the return cavity is low.

[0044] Please see Figure 14 The main liquid inlet section 43 is provided with a main liquid inlet pipe 431 fixed inside the liquid return shell 22. The main liquid inlet pipe 431 is a tubular liquid supply component, one end of which is connected to an external liquid supply source for inputting coating liquid into the equipment. The main liquid inlet pipe 431 is connected to the first liquid inlet pipe 282 and the round pipe 435 respectively. The first liquid inlet pipe 282 leads to the buffer liquid supply section 28, and the round pipe 435 leads to the float section 27. When multiple liquid return zones are arranged in parallel, the first liquid inlet pipe 282 and the round pipe 435 can be set into multiple groups respectively, and correspond to the buffer liquid supply section 28 and the float section 27 of each liquid return zone respectively.

[0045] The first diverting disc 433 is rotatably disposed inside the inlet manifold 431. The first diverting disc 433 is a disc-shaped valve core, the outer edge of which is adapted to the inner cavity of the inlet manifold 431 and can rotate relative to the inlet manifold 431. A diverting groove 434 is provided on the first diverting disc 433. The diverting groove 434 is a circular groove that passes through the first diverting disc 433 and is used to connect different liquid outlet directions at different rotation positions. A cylinder 432 is fixedly disposed on the first diverting disc 433. One end of the cylinder 432 passes through the inlet manifold 431 and is fixedly connected to the first magnetic handle 437. When the operator rotates the first magnetic handle 437, the cylinder 432 drives the first diverting disc 433 to rotate inside the inlet manifold 431.

[0046] Two magnetic plates 436 are fixed on the outer wall of the liquid inlet main pipe 431 near the end of 437. The first magnetic handle 437 is magnetically engaged with the magnetic plate 436. The switching positions of the magnetic plate 436 and the first magnetic handle 437 correspond. After the first magnetic handle 437 and the magnetic plate 436 are magnetically attracted, they can limit the first diversion disc 433 from being deflected by liquid flow impact or equipment vibration. When the first diversion disc 433 rotates, the diversion groove 434 can control the connection of the first liquid inlet pipe 282. When the diversion groove 434 is aligned with the first inlet pipe 282, the coating liquid in the main inlet pipe 431 flows to the buffer supply section 28 through the first inlet pipe 282 to fill the buffer supply section 28 with coating liquid. When the diversion groove 434 is misaligned with the first inlet pipe 282, the coating liquid in the main inlet pipe 431 is blocked by the first diversion disc 433 and thus cannot flow to the buffer supply section 28. The first diverting disc 433 and the circular tube 435 are staggered along the length of the cylinder 432. Therefore, the first diverting disc 433 can only control the opening and closing of the first liquid inlet pipe 282, but cannot affect the flow of the circular tube 435. Thus, the coating liquid in the main liquid inlet pipe 431 flows directly to the float section 27 through the circular tube 435.

[0047] Please see Figure 11 The buffer supply unit 28 is located in the drain chamber and is set close to the corresponding central liquid channel. The buffer supply unit 28 is used to quickly replenish the corresponding return chamber in the initial state. When multiple return zones are arranged in parallel, each return zone is equipped with a corresponding buffer supply unit 28. The buffer supply unit 28 is set close to the corresponding return chamber and is used to replenish and buffer the corresponding return zone.

[0048] The buffer supply unit 28 includes an elastic bladder 281 fixedly connected to the inner wall of the return shell 22 by a limiting member. The elastic bladder 281 is an elastic liquid storage component and can be made of rubber and other elastic materials that are resistant to the corrosion of the coating liquid. When the elastic bladder 281 is not filled with coating liquid, it is in a contracted state. When the coating liquid enters the elastic bladder 281 through the first inlet pipe 282 and the diversion pipe 283, the elastic bladder 281 expands under the action of liquid pressure and temporarily stores the coating liquid.

[0049] The top of the elastic bladder 281 is connected to the first liquid inlet pipe 282 through the diversion pipe 283. The coating liquid delivered by the first liquid inlet pipe 282 enters the elastic bladder 281 through the diversion pipe 283. The bottom of the elastic bladder 281 is connected to the manifold shell 284. The manifold shell 284 is located below the elastic bladder 281 and is used to receive the coating liquid released by the elastic bladder 281. The manifold shell 284 is fixed on the baffle plate 42. The side of the manifold shell 284 is provided with a liquid outlet, which is connected to the liquid channel in the middle of the baffle plate 42.

[0050] When the central liquid channel is opened, the elastic bladder 281 can return to its contracted state under its own elastic restoring force, and the coating liquid temporarily stored inside it is quickly squeezed into the return chamber through the liquid outlet on the side of the manifold 284 and the central liquid channel. Thus, when the equipment is in its initial state or the liquid level in the return chamber is low, the buffer liquid supply unit 28 can quickly replenish the liquid in the return chamber, so that the return chamber can quickly reach the normal liquid level range, thereby enabling timely triggering 27 and ensuring timely and accurate control.

[0051] When multiple return liquid zones are arranged in parallel, each return liquid zone is equipped with a corresponding buffer supply unit 28, and the outlet of the manifold 284 of each buffer supply unit 28 is connected to the middle liquid channel of the corresponding return liquid zone, so that each return liquid zone can be quickly replenished when there is no liquid in the return liquid zone.

[0052] Please see Figure 16 The float section 27 is located between the reflux chamber and the discharge chamber, and is used to convert the liquid level change in the reflux chamber into the mechanical movement of the float section 27. When the reflux shell 22 is divided into multiple reflux zones by the wedge-shaped baffle 24, multiple float sections 27 are respectively set in the corresponding reflux chamber, so that each reflux zone can form independent mechanical feedback adjustment according to its own liquid level change.

[0053] The float part 27 includes a fixed shaft 273 fixed on the inner wall of the return liquid shell 22. The fixed shaft 273 serves as the fulcrum for the rotation of the lever arm 272. The middle part of the lever arm 272 is rotatably sleeved on the fixed shaft 273. The lever arm 272 is a bent long rod-shaped structure. The lever arm 272 and the fixed shaft 273 can be rotatably connected through a shaft hole. A float ball 271 is fixedly connected to one end of the lever arm 272 near the return cavity. The float ball 271 is located in the return cavity and can rise and fall with the liquid level in the return cavity. The float ball 271 is a spherical floating part. It can be a hollow sphere or made of a material with a density less than that of the coating liquid, so that it can rise and fall with the liquid level in the return cavity.

[0054] The other end of the lever arm 272 is rotatably connected to the upper end of the rotating rod 275 via a pin 274. The fixed shaft 273 is located between the float 271 and the rotating rod 275, so that the rise and fall of the float 271 can be converted into the swing of the lever arm 272, and transmitted to the rotating rod 275 via the pin 274. The lower end of the rotating rod 275 is rotatably connected to the upper end of the connecting rod 276. This structure allows the movement of the rotating rod 275 to continue to be transmitted to the connecting rod 276 and reduces motion interference. The lower end of the connecting rod 276 is fixedly connected to the valve needle 278. When the connecting rod 276 moves, it can drive the valve needle 278 to move synchronously.

[0055] The inner wall of the return liquid housing 22 is fixedly connected to the valve body 277 via a connector. The valve needle 278 is slidably inserted into the valve body 277, forming a valve cavity. The valve needle 278 is a tapered adjusting member, with its end extending into the valve cavity. The connecting rod 276 extends into the valve cavity of the valve body 277 and is slidably connected to the valve body 277. When the valve needle 278 slides within the valve body 277, the position of its end relative to the flow channel within the valve cavity changes. When the valve needle 278 is mostly within the valve cavity, the flow rate within the valve cavity is relatively small. When the valve needle 278 is less within the valve cavity or mostly away from the valve cavity, the flow rate within the valve cavity is relatively large. The valve body 277 is connected to the second inlet pipe 2710 and the delivery pipe 279 respectively. The second inlet pipe 2710 is connected to the circular pipe 435, and the delivery pipe 279 is connected to the connecting pipe 23. The second inlet pipe 2710 and the delivery pipe 279 are connected to the valve cavity inside the valve body 277 respectively. The valve needle 278 changes the flow area by moving closer to or further away from the connection position of the second inlet pipe 2710 and the delivery pipe 279. The coating liquid enters the second inlet pipe 2710 through the circular pipe 435, then flows through the valve body 277 and the delivery pipe 279 to the connecting pipe 23, and finally enters the microfilm section 1.

[0056] The coating liquid in the main inlet pipe 431 flows through the round pipe 435 to the second inlet pipe 2710. The coating liquid in the second inlet pipe 2710 enters the valve body 277 and flows through the flow area between the valve needle 278 and the valve cavity to the delivery pipe 279. Then it can flow to the micro liquid membrane section 1 through the connecting pipe 23.

[0057] Please see Figure 17 and Figure 18 A cleaning return liquid switching part 29 is provided in the drainage chamber. The cleaning return liquid switching part 29 is located close to the drainage chamber and is used to switch between drainage state and cleaning state. The cleaning return liquid switching part 29 includes a liquid outlet pipe 293 fixed to the side of the return liquid shell 22. Multiple liquid outlet square shells 291 are fixedly installed at equal intervals on the side of the liquid outlet pipe 293. The number of liquid outlet square shells 291 is the same as the number of float parts 27. The end of the liquid outlet square shell 291 near the return liquid shell 22 passes through the side of the return liquid shell 22 and communicates with the drainage chamber. The coating liquid in the drainage chamber can enter the liquid outlet pipe 293 through the liquid outlet square shell 291.

[0058] Multiple second diverting discs 292 are rotatably arranged inside the liquid outlet pipe 293. The second diverting discs 292 are disc-shaped switching components, and their outer edges are adapted to the inner cavity of the liquid outlet pipe 293. A second connecting post 294 is fixedly connected to the outer wall of the second diverting disc 292. One end of the second connecting post 294 extends out of the liquid outlet pipe 293 and is fixedly connected to the second magnetic handle 295. Two mating magnetic blocks are fixedly connected to the end of the liquid outlet pipe 293 near the second magnetic handle 295. When the operator rotates the second magnetic handle 295 to magnetically connect with the two cooperating magnetic blocks, the second connecting post 294 drives the second diverting disc 292 to rotate inside the liquid outlet pipe 293.

[0059] The second diversion disc 292 has a square groove 299 and a cleaning groove 298. When the square groove 299 connects to the liquid outlet shell 291 and the liquid outlet pipe 293, it forms a drainage passage. When the second diversion disc 292 rotates to the drainage position, the square groove 299 is aligned with the liquid outlet shell 291 and the liquid outlet pipe 293. The coating liquid in the drainage chamber is discharged or recovered through the liquid outlet pipe 293. When the cleaning groove 298 connects to the cleaning pipe 296 and the cleaning spray shell 297, it forms a cleaning passage. One end of the cleaning pipe 296 is connected to the liquid outlet... Pipe 293 is connected to the other end, and the other end is connected to the cleaning spray shell 297. The cleaning spray shell 297 is provided with a spray nozzle for spraying cleaning fluid into the return liquid shell 22. When the second diverting disc 292 rotates to the cleaning position, the cleaning groove 298 is aligned with the cleaning pipe 296 and the cleaning spray shell 297. The cleaning fluid is sprayed into the return liquid shell 22 through the cleaning spray shell 297 to flush the return chamber and the drain chamber. Normal production and cleaning maintenance are completed by rotating the second diverting disc 292, reducing the disassembly and assembly of pipelines.

[0060] Please see Figures 4 to 6 The microfilm section 1 is provided with a first housing 11 fixed on the top of the return liquid shell 22. The first housing 11 serves as the mounting base for the microfilm section 1 and is fixed on the top of the return liquid shell 22, so that the microfilm section 1 and the float control section 2 are in communication. A liquid injection nozzle 13 is fixed on the first housing 11. The liquid injection nozzle 13 is connected to the connecting pipe 23 through the liquid guide branch pipe 12. The flow rate of the coating liquid is adjusted by the float section 27. The coating liquid enters the first housing 11 in sequence through the infusion pipe 279, the connecting pipe 23, the liquid guide branch pipe 12 and the liquid injection nozzle 13. Multiple liquid collection chambers 14 are opened in the first housing 11. A liquid injection pipe 15 is installed at the lower end of the liquid collection chamber 14. The 14 is connected to the liquid injection nozzle 13 and the liquid injection pipe 15 respectively. The liquid collection chamber 14 is used to temporarily collect the coating liquid entering from the liquid injection nozzle 13 and then transport and disperse it downward by the liquid injection pipe 15.

[0061] A magnetic suction plate 16 and a limiting plate 17 are fixed on the outer wall of the first housing 11. The magnetic suction plate 16 magnetically attracts a coating soft plate 18, which is limited by the limiting plate 17. The magnetic suction plate 16 is used to attract the coating soft plate 18, and the limiting plate 17 is used to limit the installation position of the coating soft plate 18, so that the coating soft plate 18 is not easily displaced during the coating process. A coating groove 19 is opened at the bottom of the coating soft plate 18. The coating soft plate 18 is a flexible plate structure with its bottom facing the textile surface. The coating groove 19 extends along the width direction of the textile, so that the coating liquid can be released to the textile surface along the width direction of the textile. The coating soft plate 18 has a certain degree of flexibility and can produce slight deformation when in contact with the textile, which is conducive to maintaining a relatively stable contact state between the coating groove 19 and the textile surface. The magnetic suction plate 16 and the limiting plate 17 cooperate to allow the coating soft plate 18 to be disassembled and positioned, which is convenient for replacement according to the width, thickness or coating amount requirements of the textile.

[0062] Specifically, both the bottom of the fixed magnetic plate 16 and the top of the coated flexible plate 18 are provided with magnetic blocks that magnetically attract each other. When installing the coated flexible plate 18, the top of the coated flexible plate 18 is first inserted into the limiting position formed by the limiting plate 17, and the magnetic block on the top of the coated flexible plate 18 is aligned with the magnetic block on the bottom of the fixed magnetic plate 16. When the two magnetic blocks attract each other, the coated flexible plate 18 can be detachably installed on the bottom of the fixed magnetic plate 16. The limiting plate 17 is used to limit the installation position of the coated flexible plate 18. The magnetic attraction between the fixed magnetic plate 16 and the magnetic blocks is used to provide a bonding and fixing force, thereby jointly limiting the detachment or displacement of the coated flexible plate 18 during the coating process, and facilitating the subsequent disassembly, cleaning or replacement of the coated flexible plate 18.

[0063] Please see Figure 19 and Figure 20 The wedge-shaped extrusion section 3 is provided with a third housing 31 fixed to the top of the return liquid housing 22. The third housing 31 is fixed above the box-shaped recovery section and serves as the supporting base for the wedge-shaped extrusion section 3. A threaded housing 37 is fixedly connected to the third housing 31. The threaded housing 37 is threadedly connected to the threaded post 38. The top of the threaded post 38 passes upward through the third housing 31 and is fixed with a handle 36. The unthreaded exterior of the threaded post 38 slides in contact with the third housing 31. When the operator rotates the handle 36, the threaded post 38 can move up and down relative to the threaded housing 37. The bottom of the threaded post 38 is rotatably connected to the connecting frame 34 through the mounting housing 313. The mounting housing 313 allows the threaded post 38 to rotate relative to the connecting frame 34, thereby reducing the situation where the connecting frame 34 rotates synchronously with the threaded post 38.

[0064] Specifically, a U-shaped mounting cavity is provided on the inner side of the mounting shell 313, and a bearing is fixedly connected to the lower end of the threaded post 38, with the bearing snapped into the mounting shell 313; The connecting frame 34 is slidably engaged with the limiting shell 39, and the limiting shell 39 restricts the connecting frame 34 from rotating with the threaded column 38, so that the connecting frame 34 mainly moves vertically; Specifically, the upper end of the connecting frame 34 is fixedly connected to a vertical rod that is adapted to the limiting shell 39, and the vertical rod is slidably connected to the inner cavity of the limiting shell 39. The wedge block 32 is fixed to the bottom of the connecting frame 34. The bottom surface of the wedge block 32 gradually approaches the porous support plate 25 along the textile conveying direction. The bottom surface of the wedge block 32 is an inclined surface. When the textile moves along the conveying direction, it is first subjected to a smaller extrusion force and then gradually subjected to a larger extrusion force. Excess coating liquid is gradually squeezed out and falls to the porous support plate 25. The bottom of the wedge block 32 is rotatably connected to a roller 311. The roller 311 rolls in contact with the textile, reducing the friction between the wedge block 32 and the textile surface. The bottom of the wedge block 32 is also provided with an air jet groove 312. The inside of the wedge block 32 is hollow. The wedge block 32 is connected to the air inlet hose 33. The air jet groove 312 is connected to an external air source through the air inlet hose 33. The air jet can blow away the local liquid accumulation near the extrusion area and redistribute the coating liquid.

[0065] Working principle: During operation, the textiles treated by the previous impregnation process enter the equipment. The coating liquid first enters the float control section 2. At the initial stage of equipment startup, the buffer supply section 28 can temporarily store and replenish a certain amount of coating liquid, so that the area where the float section 27 is located can quickly reach the initial liquid level state that can be adjusted by liquid level feedback. Specifically, the liquid level of the coating liquid in the return chamber is preferably close to the normal liquid level position corresponding to the middle block 47 and lower than the height of the overflow tank 46, so that the float 271 is in a position that can generate feedback action with the rise and fall of the liquid level.

[0066] Subsequently, the coating liquid enters the micro-liquid film section 1 under the adjustment of the float section 27. The micro-liquid film section 1 disperses the coating liquid and sends it to the coating plate 18. The coating liquid is then released onto the surface of the textile through the coating tank 19, so that a thinner and more uniform coating liquid layer is formed on the surface of the textile, thereby replenishing the liquid and coating the surface of the impregnated textile.

[0067] During the coating process, the textile continues to pass through the wedge-shaped extrusion section 3. The wedge-shaped extrusion section 3 gradually extrudes the textile, squeezing out excess coating liquid and facilitating the penetration of the coating liquid into the textile. The wedge-shaped extrusion section 3 can also disperse the accumulated liquid near the extrusion area by air jetting, redistributing the coating liquid on or around the textile surface, ensuring uniform absorption of the coating liquid on the textile.

[0068] Excess coating liquid squeezed out flows back down into the return liquid shell 22. The return liquid shell 22 collects and guides the return liquid. During normal operation, the coating liquid in the return chamber of the return liquid shell 22 maintains a slow flow. After the coating liquid falling from the surface of the textile enters the return liquid shell 22, it is first guided into the corresponding return liquid area by the guide plate 26 and the wedge-shaped partition 24, and then enters the return liquid cavity of the corresponding return liquid area. The return liquid does not directly cause the float part 27 to float up every time. Instead, it determines whether the liquid level in the return liquid cavity rises based on the relationship between the amount of coating liquid entering the return liquid cavity and the amount discharged from the bottom liquid channel.

[0069] When the amount of coating liquid entering the reflux chamber is less than or equal to the flow rate of the bottom liquid channel, the coating liquid in the reflux chamber can be discharged out in time through the bottom liquid channel and the cleaning return liquid switching part 29. At this time, the liquid level in the reflux chamber is maintained within the normal liquid level range near the middle block 47, or does not rise significantly. The float 271 does not produce a significant upward movement, and the valve needle 278 basically maintains its original adjustment position.

[0070] Under normal conditions, the connecting part 44 maintains a slightly connected state, allowing the coating liquid to pass through at a small flow rate, thus preventing the liquid in the return tank 22 from draining too quickly; the cleaning return switching part 29 maintains a normal drainage connection state, allowing the coating liquid after passing through the connecting part 44 to continue to drain. In this way, the amount of return liquid entering the area where the float part 27 is located can be roughly balanced with the amount of liquid discharged, so that the liquid level near the float part 27 is maintained within the normal range.

[0071] When the liquid level near the float section 27 is within the normal range, the float ball 271 is in a relatively stable floating position, and the valve needle 278 is also in a relatively stable adjustment position, so that the coating liquid entering the delivery pipe 279 from the second inlet pipe 2710 maintains a continuous and stable flow state. In other words, the float section 27 is not a simple switching structure when it is working normally, but is in a continuous flow and continuous feedback adjustment state.

[0072] When the amount of coating liquid entering the reflux chamber is greater than the flow rate of the bottom liquid channel, the liquid level of the coating liquid in the reflux chamber gradually rises from near the middle block 47. The float part 27 begins to generate feedback action. At this time, the float ball 271 rises with the liquid level, causing the lever arm 272 to swing upward at the end near the float ball 271 and downward at the end away from the float ball 271. The lever arm 272 also moves downward through the rotating rod 275 and the connecting rod 276, causing the valve needle 278 to move relative to the valve body 277, thereby reducing the flow area between the second inlet pipe 2710 and the delivery pipe 279, thus reducing the amount of coating liquid supplied to the micro-liquid membrane part 1.

[0073] During the above adjustment process, some of the coating liquid in the return chamber can continue to flow out through the bottom liquid channel and be discharged through the bottom liquid channel and the cleaning return liquid switching part 29. When the liquid level in the return chamber subsequently decreases, the float 271 descends with the liquid level, and the lever arm 272, the rotating rod 275 and the connecting rod 276 drive the valve needle 278 to move in the direction of increasing the flow area, thereby increasing the supply of coating liquid into the micro liquid film part 1. Thus, the device can automatically adjust the supply of coating liquid according to the change of liquid level in the return liquid shell 22, reducing the situation of excessive or insufficient liquid supply.

[0074] When the liquid level in the return chamber rises abnormally and approaches the overflow tank 46, the coating liquid can also flow into the adjacent drain chamber through the overflow tank 46, thereby forming a high-level auxiliary discharge, avoiding the single return liquid zone from being too high and affecting the stable adjustment of the float part 27. The operator can also adjust the opening of the bottom liquid channel through the first adjustment part 41 based on the liquid level position observed by the acrylic plate 45 and the reference of the middle block 47.

[0075] After coating is completed, the state of the cleaning return liquid switching unit 29 can be adjusted to discharge the residual coating liquid in the return liquid shell 22, or to introduce cleaning liquid into the return liquid shell 22 for rinsing, so as to clean the residual liquid inside the equipment, reduce coating liquid residue and blockage, and facilitate subsequent reuse.

[0076] Through the above process, this equipment can continuously replenish, coat, squeeze, return, and adjust the liquid level of the impregnated textiles, making the coating liquid more evenly distributed on the surface of the textiles and reducing coating liquid waste.

[0077] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated textile impregnation and coating device, characterized in that, include: The equipment is provided with a micro-liquid film section (1) and a wedge-shaped extrusion section (3) along the textile conveying direction. Below the micro-liquid film section (1) and the wedge-shaped extrusion section (3) is a float control section (2). The float control section (2) is provided with a return liquid shell (22) with an open top. The return liquid shell (22) is formed by connecting a trough-shaped guide section and a box-shaped recovery section. The bottom of the trough-shaped guide section is inclined towards the box-shaped recovery section. A vertically arranged baffle plate (42) is fixed inside the box-shaped recovery section. The baffle plate (42) divides the box-shaped recovery section into a return chamber and a discharge chamber. A float section is installed between the return chamber and the discharge chamber. 27) A main liquid inlet (43) for liquid inlet is installed in the drain chamber. The liquid inlet end of the float (27) is connected to the main liquid inlet (43), and the liquid outlet end is connected to the micro liquid film (1). Liquid channels are opened in the middle and bottom of the baffle plate (42). The first adjustment part (41) adjusts the opening of the middle liquid channel. The middle liquid channel is used to connect the buffer liquid supply part (28) and the return chamber. A cleaning return liquid switching part (29) is provided in the drain chamber. The connecting part (44) adjusts the opening of the bottom liquid channel. The drain chamber is connected to the cleaning return liquid switching part (29).

2. The integrated textile impregnation and coating equipment according to claim 1, characterized in that: The trough-shaped guide section is located below the micro-liquid film section (1), the box-shaped recovery section is located below the wedge-shaped extrusion section (3), and a porous support plate (25) is fixed on the top of the return liquid shell (22). The porous support plate (25) is located below the textile conveying path. A guide plate (26) and a wedge-shaped baffle (24) are fixed inside the trough-shaped guide section. The lower end of the guide plate (26) faces the box-shaped recovery section. The wedge-shaped baffle (24) is set along the guide direction of the trough-shaped guide section. The wedge-shaped baffle (24) divides the return space inside the return liquid shell (22) into multiple parallel return liquid zones. Each return liquid zone is respectively connected to the corresponding return liquid zone. The return chamber is connected, and each return liquid zone is provided with a corresponding buffer supply part (28) and float part (27) so that different return liquid zones can be zoned and controlled according to their respective return liquid volume. The outer wall of the return liquid shell (22) is fixed with a connecting pipe (23), which connects the outlet end of the float part (27) and the micro liquid film part (1). An acrylic plate (45) is installed on the side wall of the box-shaped recovery section. The acrylic plate (45) corresponds to the return chamber. A middle block (47) is fixed on the baffle plate (42). An overflow groove (46) connecting the adjacent drain chamber is opened on the top of the baffle plate (42).

3. The integrated textile impregnation and coating equipment according to claim 1, characterized in that: The bottom of the baffle plate (42) is provided with a bottom groove along its length direction, and the bottom liquid channel is connected to the bottom groove; the connecting part (44) includes a connecting block (442) slidably installed in the bottom groove, and a plurality of first blocks (441) are fixedly installed at equal intervals on the outer side of the connecting block (442). The first blocks (441) are slidably connected to the bottom groove, and part of the first blocks (441) extends into the bottom liquid channel. One end of the connecting block (442) extends through the return liquid shell (22) to the outside and is fixedly connected to the first handle (444). A first tension spring (443) is provided on the side of the return liquid shell (22) near the first handle (444). One end of the first tension spring (443) is fixed on the first handle (444), and the other end is fixed on the outer wall of the return liquid shell (22). When the first handle (444) drives the connecting block (442) to move along the bottom groove, the first blocks (441) change their blocking area on the bottom liquid channel.

4. The integrated textile impregnation and coating equipment according to claim 1, characterized in that: The baffle plate (42) has a central groove in the middle, and the central liquid channel is connected to the central groove. A first connecting post (412) is slidably arranged in the central groove. One end of the first connecting post (412) passes through the baffle plate (42) and extends to the outside of the return liquid shell (22). A second stop block (411) is fixedly connected to the first connecting post (412). One end of the first connecting post (412) passes through the return liquid shell (22) and extends to the outside and is fixedly connected to a second handle (414). A second tension spring (413) is connected between the second handle (414) and the return liquid shell (22). When the second handle (414) drives the first connecting post (412) to move along the central groove, the second stop block (411) changes its blocking area on the central liquid channel.

5. The integrated textile impregnation and coating equipment according to claim 1, characterized in that: The main liquid inlet section (43) is provided with a main liquid inlet pipe (431) fixed in the return liquid shell (22). The main liquid inlet pipe (431) is connected to the first liquid inlet pipe (282) and the round pipe (435) respectively. The first diverting disc (433) is rotatably disposed in the main liquid inlet pipe (431). A diverting groove (434) is opened on the first diverting disc (433). A cylinder (432) is fixedly inserted on the first diverting disc (433). One end of the cylinder (432) passes through the main liquid inlet pipe (431) and is fixedly connected to the first magnetic handle (437). Two magnetic plates (436) are fixed on the outer wall of the main liquid inlet pipe (431) near the end of 437. The first magnetic handle (437) and the magnetic plates (436) are magnetically engaged.

6. The integrated textile impregnation and coating equipment according to claim 5, characterized in that: The buffer supply section (28) is located in the drain chamber. The buffer supply section (28) includes an elastic bladder (281) that is fixedly connected to the inner wall of the return shell (22) by a limiting member. The top of the elastic bladder (281) is connected to the first inlet pipe (282) through a diversion pipe (283). The bottom of the elastic bladder (281) is connected to the manifold shell (284). The manifold shell (284) is fixed on the baffle plate (42) and is connected to the return chamber through the middle liquid channel.

7. The integrated textile impregnation and coating equipment according to claim 5, characterized in that: The float section (27) includes a fixed shaft (273) fixed to the inner wall of the return chamber (22). The middle part of the lever arm (272) is rotatably sleeved on the fixed shaft (273). A float ball (271) is fixedly connected to one end of the lever arm (272) near the return chamber. The other end of the lever arm (272) is rotatably connected to the upper end of the rotating rod (275) through a pin (274). The lower end of the rotating rod (275) is rotatably connected to the upper end of the connecting rod (276). The lower end of the connecting rod (276) is connected to the valve needle (278). The valve body (277) is fixedly connected to the inner wall of the return liquid shell (22) through a connector. The valve needle (278) is slidably inserted into the valve body (277). The connecting rod (276) extends into the valve cavity of the valve body (277) and is slidably connected to the valve body (277). The valve body (277) is connected to the second inlet pipe (2710) and the delivery pipe (279) respectively. The second inlet pipe (2710) is connected to the round pipe (435), and the delivery pipe (279) is connected to the connecting pipe (23).

8. The integrated textile impregnation and coating equipment according to claim 6, characterized in that: The cleaning return liquid switching part (29) is located outside the return liquid shell (22). The cleaning return liquid switching part (29) includes an outlet pipe (293) fixed on the side of the return liquid shell (22). Multiple outlet square shells (291) are fixedly installed at equal intervals on the side of the outlet pipe (293). Multiple second diversion discs (292) are rotatably arranged inside the outlet pipe (293). A second connecting column (294) is fixedly connected to the outer wall of the second diversion disc (292). One end of the second connecting column (294) passes through the outlet pipe (293) and is fixedly connected to the second magnetic handle (295). A square groove (299) and a cleaning circular groove (298) are opened on the second diversion disc (292). When the square groove (299) connects the outlet square shell (291) and the outlet pipe (293), it forms a drainage passage. When the cleaning circular groove (298) connects the cleaning pipe (296) and the cleaning spray shell (297), it forms a cleaning passage.

9. The integrated textile impregnation and coating equipment according to claim 1, characterized in that: The micro-liquid membrane section (1) is provided with a first housing (11) fixed on the top of the return liquid shell (22). A liquid injection nozzle (13) is fixed on the first housing (11). The liquid injection nozzle (13) is connected to the connecting pipe (23) through the liquid guide branch pipe (12). Multiple liquid collection chambers (14) are opened in the first housing (11). A liquid injection pipe (15) is installed at the lower end of the liquid collection chamber (14). The liquid collection chamber (14) is connected to the liquid injection nozzle (13) and the liquid injection pipe (15) respectively. A magnetic suction plate (16) and a limiting plate (17) are fixed on the outer wall of the first housing (11). The magnetic suction plate (16) magnetically attracts a coating soft plate (18). The coating soft plate (18) is limited by the limiting plate (17). A coating groove (19) is opened at the bottom of the coating soft plate (18).

10. The integrated textile impregnation and coating equipment according to claim 7, characterized in that: The wedge-shaped extrusion section (3) is provided with a third housing (31) fixed on the top of the return liquid housing (22). The threaded housing (37) is fixed on the third housing (31). The threaded column (38) is threadedly connected to the threaded housing (37). The top of the threaded column (38) passes through the third housing (31) and is fixed with a throttle (36). The unthreaded part of the threaded column (38) slides in contact with the third housing (31). The bottom of the threaded column (38) is rotatably connected to the connecting frame (34) through the mounting housing (313). The connecting frame (34) slides in cooperation with the limiting housing (39). The wedge block (32) is fixed on the bottom of the connecting frame (34). The bottom surface of the wedge block (32) gradually approaches the porous support plate (25) along the textile conveying direction. The bottom of the wedge block (32) is rotatably connected to a roller (311). The bottom of the wedge block (32) is also provided with an air jet groove (312). The air jet groove (312) is connected to the air inlet hose (33).

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