Silk screen cleaning device and process

Abstract

The invention relates to the technical field of printing silk screen production, in particular to a silk screen cleaning device which comprises a winding assembly and an unwinding assembly, and a silk screen is arranged between the winding assembly and the unwinding assembly. A hot air drying box and a gas phase ultrasonic cleaning machine are sequentially arranged between the winding assembly and the unwinding assembly in the conveying direction of the silk screen, the hot air drying box comprises a box body and a plurality of conveying rollers which are sequentially arranged in the box body in the conveying direction of the silk screen, and a drying pipe is arranged above the conveying rollers; the drying pipe is connected with an air heater, and downward air outlet holes are formed in the lower portion of the drying pipe. The invention further relates to a silk screen cleaning process. The device has the effect of reducing energy consumption in the silk screen cleaning process.

Description

Technical Field

[0001] This application relates to the technical field of screen printing production, and in particular to a screen cleaning device and process. Background Technology

[0002] Printing screens are made by weaving metal wires into a mesh. Because screens used for printing require a high degree of cleanliness to avoid affecting print quality, especially for screens used in semiconductor device printing, oil and grease can adhere to the surface of the metal wires during the weaving process. Therefore, the screen needs to be cleaned to remove this oil and grease.

[0003] A related technology discloses a wire mesh washing device, including a frame, with an unwinding assembly and a winding assembly installed on both sides of the frame. A washing assembly and a drying assembly are installed sequentially between the unwinding assembly and the winding assembly. The unwinding assembly includes an unwinding roller, which is rotatably mounted on the frame. An unwinding motor is installed at one end of the unwinding roller, providing power for the rotation of the unwinding roller. The winding assembly includes a winding roller, which is rotatably mounted on the frame. A winding motor is installed at one end of the winding roller, providing power for the rotation of the winding roller. The washing assembly includes a cleaning chamber, with a rinsing assembly installed on one side of the cleaning chamber and a blowing assembly installed on the other side of the cleaning chamber. An ultrasonic generator is installed inside the cleaning chamber. Before entering the cleaning chamber, the wire mesh is first rinsed by the rinsing assembly, then ultrasonically cleaned in the cleaning chamber, and finally blown by the blowing assembly before entering the drying assembly. The drying assembly includes an oven, with an electric heating wire installed at the top inside the oven and a support roller installed at the bottom inside the oven.

[0004] However, the above-mentioned cleaning process for wire mesh requires washing with water and then evaporating the water from the wire mesh in an oven, resulting in a large amount of electricity consumed during the wire mesh cleaning process. Summary of the Invention

[0005] To reduce energy consumption during the wire mesh cleaning process, this application provides a wire mesh cleaning device and process.

[0006] This application provides a wire mesh cleaning device, which adopts the following technical solution: A wire mesh cleaning device includes a winding assembly and an unwinding assembly. A wire mesh is arranged between the winding assembly and the unwinding assembly. A hot air drying chamber and a gas phase ultrasonic cleaner are sequentially arranged between the winding assembly and the unwinding assembly along the wire mesh conveying direction. The hot air drying chamber includes a chamber body and a plurality of conveying rollers arranged sequentially along the wire mesh conveying direction inside the chamber body. A drying pipe is arranged above the conveying rollers. The drying pipe is connected to a hot air fan, and a downward-facing air outlet is opened at the lower part of the drying pipe.

[0007] By adopting the above technical solution, during use, a wire mesh is arranged between the winding assembly and the unwinding assembly, so that the wire mesh can be conveyed to the winding assembly. During the wire mesh conveying process, the wire mesh is cleaned by a hot air drying box and an ultrasonic cleaning assembly. At the same time, the hot air drying box first cleans the dust or oil stains adhering to the wire mesh through the air outlet of the hot air blower connected to the drying pipe. The oil stains are evaporated by hot air, and then a second cleaning is performed by a gas phase ultrasonic cleaner, thereby reducing the energy consumption of the wire mesh cleaning process.

[0008] Preferably, the conveying roller has a hollow interior, and a reflux hole is provided on the side wall of the conveying roller. The reflux hole is connected to a reflux pipe, which is used to connect to the air inlet of the hot air blower.

[0009] By adopting the above technical solution, the inside of the conveying roller is hollow. A return hole is opened on the inner wall of the conveying roller, so that the airflow accurately enters the return hole after passing through the air outlet, reducing the disturbance of the airflow in the box and causing the wire mesh to be dented. At the same time, the return pipe is connected to the air inlet of the hot air blower, so that the hot air can be recovered, further reducing energy consumption.

[0010] Preferably, the conveying roller is connected to a drive assembly for driving the conveying roller to rotate, a support roller is provided inside the conveying roller, the two ends of the support roller are mounted on the housing, an elongated groove is provided on the upper part of the support roller, and the return holes are evenly arranged along the periphery of the conveying roller.

[0011] By adopting the above technical solution, the drive component is used to drive the conveyor roller to rotate. Since the conveyor roller can move synchronously with the wire mesh, the return pipe on the conveyor roller keeps cleaning the dust at the same place on the wire mesh. In addition, the long groove is located on the upper part of the support roller, so that the airflow is directly opposite the air outlet at the position of the long groove. This allows the airflow to be perpendicular to the wire mesh, ensuring accurate airflow direction and high airflow velocity, thereby improving drying efficiency.

[0012] Preferably, the support roller has a hollow structure inside, and the return pipe is connected to the inside of the support roller, and a filter assembly is provided inside the support roller.

[0013] By adopting the above technical solution, the support roller has a hollow structure inside, and a filter component is set inside the support roller. The airflow can be filtered by the filter component inside the support roller before being sent to the hot air blower for recycling.

[0014] Preferably, the filter assembly includes a support frame and filter cotton. The support frame is rotatably connected inside the support roller, and the filter cotton is installed on the support frame. The support frame includes a central tube and multiple dividing plates. The multiple dividing plates are evenly distributed along the circumference of the central tube. The filter cotton is located between two dividing plates, and a through hole is opened on the side wall of the central tube for communicating with the return pipe.

[0015] By adopting the above technical solution, the central tube is rotatably connected inside the support roller. The central tube drives multiple dividing plates to rotate, so that the filter cotton between the multiple dividing plates can rotate with it, thereby allowing multiple filter cotton to be used in sequence and increasing the service life of the filter cotton.

[0016] Preferably, the central tube is provided with an air pipe inside, and the air pipe has an air inlet. The air inlet is inclined upwards. The air pipe is used to communicate with the return pipe. The through hole is rotated to the inclined position to communicate with the air inlet, and after communicating with the air inlet, it is rotated to the vertically upward position.

[0017] By adopting the above technical solution, an air pipe is set inside the central tube, and an air inlet is set upward on the air pipe. When the air inlet on the air pipe is connected to the through hole, a pressure drop is first generated between the two dividing plates. Then, when the area between the two dividing plates reaches the position of the long groove, the lower part of the drying tube can have a relatively uniform suction force, so that the airflow can be more uniform. At the same time, it can also reduce the impact of suction reduction caused by the setting of the filter component.

[0018] Preferably, a gear ring is coaxially fixed on the conveying roller, the end of the support roller is rotatably connected to the drive shaft, one end of the drive shaft is coaxially fixedly connected to a first gear that meshes with the gear ring, and the other end is coaxially fixedly connected to a second gear, and a driven gear is coaxially fixedly connected to the central tube, with the second gear meshing with the driven gear.

[0019] By adopting the above technical solution, when the conveyor roller rotates, the conveyor roller drives the gear ring to rotate, the gear ring then drives the first gear, the first gear drives the second gear, and the second gear then drives the driven gear, thereby causing the central tube to rotate, and the conveyor roller rotates the filter assembly through the gear ring, the first gear, the second gear and the driven gear.

[0020] Preferably, the dividing plate has an installation groove on the side away from the central tube, a sealing plate is provided in the installation groove, and a spring is provided at the bottom of the installation groove. One end of the spring is fixed to the sealing plate and the other end is fixed to the bottom of the sealing groove.

[0021] By adopting the above technical solution, a sealing plate is installed in the mounting groove. The sealing plate abuts against the inside of the support roller under the action of the spring, thereby enabling better sealing between the support roller and the dividing plate, and reducing poor sealing caused by wear.

[0022] Preferably, a conveying pipe is connected to the drying pipe, one end of which is located at the middle of the length of the drying pipe, and the other end is used to connect to a hot air blower.

[0023] By adopting the above technical solution, one end of the conveying pipe is located in the middle of the drying pipe, so that the airflow sent into the drying pipe by the hot air blower can be more evenly distributed on the drying pipe.

[0024] This application provides a wire mesh cleaning process, which adopts the following technical solution: A wire mesh cleaning process includes passing the wire mesh sequentially through a hot air drying chamber and an ultrasonic cleaning assembly. The drying pipe inside the hot air drying chamber blows air vertically downwards. When the return holes on the multiple conveying rollers arranged inside the chamber face upwards, they cooperate with the air outlet holes on the drying pipe to blow air downwards perpendicular to the wire mesh.

[0025] By adopting the above technical solution, the drying pipe inside the hot air drying box blows air vertically downwards, and then the airflow is directed vertically downwards to blow air onto the wire mesh through the return holes on the conveyor rollers.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. During the wire mesh conveying process, the wire mesh is cleaned by a hot air drying box and an ultrasonic cleaning assembly. At the same time, the hot air drying box first cleans the dust or oil stains adhering to the wire mesh through the air outlet of the hot air blower connected to the drying pipe. The oil stains are evaporated by hot air. Then, the wire mesh is cleaned a second time by a gas phase ultrasonic cleaner, which can reduce the energy consumption of the wire mesh cleaning process. 2. The filter cotton is rotatably connected to the support roller through the central tube. The central tube drives multiple dividing plates to rotate, so that the filter cotton between the multiple dividing plates can rotate with it, thereby allowing multiple filter cotton to be used in sequence and increasing the service life of the filter cotton. 3. The conveyor roller drives the gear ring to rotate, which in turn drives the first gear, the first gear drives the second gear, and the second gear drives the driven gear, thereby causing the central tube to rotate. The conveyor roller, through the gear ring, the first gear, the second gear, and the driven gear, rotates the filter assembly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the conveyor roller structure in an embodiment of this application; Figure 3 This is a schematic diagram of the support roller structure in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the filtering component in an embodiment of this application; Figure 5 This is a schematic diagram of the internal structure of the support roller in an embodiment of this application; Figure 6 This is a schematic diagram of the trachea structure in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Rewinding assembly; 2. Unwinding assembly; 3. Hot air drying oven; 31. Oven body; 32. Conveyor roller; 321. Return hole; 33. Drying pipe; 331. Conveyor pipe; 332. Hot air blower; 333. Return pipe; 334. Heating pipe; 335. Heating wire; 4. Ultrasonic cleaning assembly; 5. Wire mesh; 6. Drive assembly; 61. Drive motor; 62. Drive sprocket; 63. Driven sprocket; 64. Transmission chain 7. Support roller; 71. Fixed shaft; 72. Long groove; 8. Filter assembly; 81. Filter cotton; 82. Support frame; 821. Central tube; 8211. Through hole; 822. Dividing plate; 8221. Mounting groove; 823. Sealing chamber; 824. Sealing plate; 825. Spring; 91. Gear ring; 92. Drive shaft; 93. First gear; 94. Second gear; 95. Driven gear; 96. Air pipe; 961. Intake port. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application discloses a wire mesh cleaning device, with reference to... Figure 1 The system includes a winding assembly 1, an unwinding assembly 2, a hot air drying chamber 3, and an ultrasonic cleaning assembly 4. The winding assembly 1 and the unwinding assembly 2 are respectively located on opposite sides of the hot air drying chamber 3 and the ultrasonic cleaning assembly 4. The unwinding assembly 2 is used to unwind the wire mesh 5. The wire mesh 5 then passes through the hot air drying chamber 3 and the ultrasonic cleaning assembly 4 in sequence, and is then wound up by the winding assembly 1. Since the hot air drying chamber 3 first cleans the wire mesh 5 by blowing away dust and oil stains with hot air, the wire mesh 5 is cleaned once before entering the ultrasonic cleaning assembly 4. The ultrasonic cleaning assembly 4 uses a gas phase ultrasonic cleaner to further clean the oil stains on the wire mesh 5. Because both the hot air drying chamber 3 and the ultrasonic cleaning assembly 4 use gas blowing to clean the wire mesh 5, the energy consumed by evaporation is reduced, thereby reducing power consumption.

[0031] refer to Figure 1The hot air drying chamber 3 includes a chamber body 31 and multiple drying pipes 33 disposed inside the chamber body 31. A conveying roller 32 is positioned below the drying pipes 33, and the wire mesh 5 is conveyed above the conveying roller 32, which supports the wire mesh 5. A conveying pipe 331 is connected to the drying pipes 33, with one end of the conveying pipe 331 connected to the middle of the drying pipe 33 along its length. The length of the drying pipe 33 is parallel to the conveying roller 32, which is perpendicular to the conveying direction of the wire mesh 5. Multiple air outlets are provided on the drying pipes 33, facing downwards. These outlets are evenly spaced along the length of the drying pipe 33. Because the conveying pipe 331 is connected to the middle of the drying pipe 33, the hot air conveyed through the outlets along the length of the drying pipe 33 is relatively uniform. A hot air blower 332 is connected to the end of the conveying pipe 331 furthest from the drying pipe 33, blowing air into the conveying pipe 331.

[0032] refer to Figure 1 and Figure 2 The two ends of the conveyor roller 32 are mounted on the housing 31. A drive assembly 6 is connected to the conveyor roller 32, which rotates the conveyor roller 32. A return hole 321 is provided on the side wall of the conveyor roller 32. The return hole 321 can be rotated to an upward position. When the air blown out of the drying tube 33 returns through the return hole 321, the airflow generated by the drying tube 33 can stably blow the screen 5 from top to bottom without causing airflow disturbance inside the housing 31. Because the screen 5 is thin, when the screen 5 is disturbed by the airflow during the conveying process, it will cause the screen 5 to be dented, that is, creases to be formed on the screen 5, which will reduce the quality of the screen 5 and affect subsequent printing. At the same time, the hot air returns quickly through the return hole 321, which improves the efficiency of the hot air passage and ensures rapid drying of both sides of the screen 5. A return pipe 333 is connected to the conveyor roller 32. One end of the return pipe 333 is connected to the end of the conveyor roller 32, and the other end is connected to a heating pipe 334. A heating wire 335 is installed inside the heating pipe 334. At the same time, the other end of the heating pipe 334 is connected to the air inlet of the hot air blower 332, so that the return pipe 333 connected to the conveyor roller 32 can reuse the hot air after purging, thereby reducing energy consumption.

[0033] refer to Figure 1The drive assembly 6 includes a drive motor 61, a drive sprocket 62, a driven sprocket 63, and a transmission chain 64. Multiple conveying rollers 32 are evenly spaced along the conveying direction of the wire mesh 5. Multiple return holes 321 are evenly arranged in the circumferential direction on the side wall of the conveying rollers 32. The distance between the conveying rollers 32 is such that the return holes 321 on the multiple conveying rollers 32 can correspond to different positions on the wire mesh 5. After the wire mesh 5 is conveyed by multiple conveying rollers 32, each position on the wire mesh 5 corresponds to the position of at least one return hole 321. This allows the hot air generated by the drying tube 33 to directly reach the corresponding return hole 321 through the wire mesh 5, resulting in a larger flow rate of the hot air at the return hole 321, which better removes dust from the wire mesh 5. The drive motor 61 is fixed inside the housing 31. The drive sprocket 62 is coaxially connected to the output shaft of the drive motor 61. The driven sprocket 63 can be coaxially fixed to one end of the conveyor roller 32. The transmission chain 64 is connected to multiple driven sprockets 63 and connected to the drive sprocket 62. Thus, the transmission chain 64 can drive multiple driven sprockets 63 through the drive motor 61, thereby enabling multiple conveyor rollers 32 to rotate in the same direction.

[0034] refer to Figure 3 The conveyor roller 32 has a hollow structure with a support roller 7 inside. Both ends of the support roller 7 extend from the two ends of the conveyor roller 32, and a fixed shaft 71 is fixedly installed at both ends of the support roller 7. The fixed shaft 71 is used to fix and connect to the housing 31. The fixed shaft 71 is also hollow, allowing one end of the return pipe 333 to be connected to the end of the fixed shaft 71. The support roller 7 is hollow, and an elongated groove 72 is formed on its upper sidewall. The elongated groove 72 penetrates the sidewall of the support roller 7, and the return pipe 333 is connected to the interior of the support roller 7 via the fixed shaft 71. The elongated groove 72 faces upwards, connecting to the interior of the support roller 7. In use, the conveying roller 32 rotates outside the support roller 7. When the return hole 321 on the conveying roller 32 rotates to a position directly opposite the elongated groove 72, the return hole 321 on the conveying roller 32 can return hot air from the elongated groove 72 to the return pipe 333. This allows the return hole 321 on the conveying roller 32 to only draw air when it is facing upwards, thereby making the direction of air blowing more stable and reducing the insufficient suction caused by multiple return holes 321 around the conveying roller 32 drawing air at the same time.

[0035] refer to Figure 4A filter assembly 8 is provided inside the support roller 7. The filter assembly 8 is used to filter dust or oil that enters the support roller 7 with the airflow. The filter assembly 8 includes filter cotton 81 and a support frame 82. The support frame 82 is used to keep the filter cotton 81 in a proper position. The support frame 82 is rotatably disposed inside the support roller 7. When the support frame 82 rotates with the filter cotton 81, different parts of the filter cotton 81 can be used for filtration, so that the filter cotton 81 can be fully utilized. When the filter cotton 81 in the filter assembly 8 needs to be cleaned, first set the long groove 72 upwards, then add cleaning fluid and water into the support roller 7 through the upper return hole 321, so that the support frame 82 drives the filter cotton 81 to rotate, and the cleaning fluid and water can continuously slosh in the support roller 7, thereby cleaning the filter cotton 81. Then loosen both ends of the support roller 7, rotate the support roller 7 180 degrees so that the long groove 72 is set downwards, and then continue to rotate the support frame 82, so that the water in the filter cotton 81 is thrown out from the position of the long groove 72 by centrifugal force. After multiple cleaning cycles, the filter cotton 81 can be reused.

[0036] refer to Figure 5 A gear ring 91 is fixedly installed inside the conveyor roller 32, and the gear ring 91 is coaxially fixed to the conveyor roller 32. A drive shaft 92 is rotatably connected to the end of the support roller 7. A first gear 93 is coaxially fixed to one end of the drive shaft 92, and the first gear 93 is used to mesh with the gear ring 91. A second gear 94 is installed inside the support roller 7, and the second gear 94 is coaxially fixed to the drive shaft 92. A driven gear 95 is coaxially fixed to the support frame 82, and the driven gear 95 meshes with the second gear 94. Since the drive device can drive the conveyor roller 32 to rotate, the conveyor roller 32 drives the first gear 93 to rotate through the gear ring 91. The first gear 93 then drives the second gear 94 to rotate through the drive shaft 92. Since the second gear 94 meshes with the driven gear 95, the support frame 82 can be rotated through the driven gear 95, which facilitates the rotation of the filter assembly 8 inside the support roller 7. The diameter of the second gear 94 is larger than that of the driven gear 95, and the gear ring 91 is also larger than that of the first gear 93. Thus, when the conveying roller 32 is driven to rotate by the drive device, the rotational speed increases twice after passing through the gear ring 91, the first gear 93, the second gear 94 and the driven gear 95, resulting in a larger rotational speed of the filter assembly 8.

[0037] refer to Figure 4 and Figure 5The support frame 82 includes a central tube 821 and multiple dividing plates 822. The dividing plates 822 are arranged in a radiating pattern along the radial direction of the central tube 821. One side of each dividing plate 822 is fixedly connected to the outer wall of the central tube 821. A sealed chamber 823 is formed between two adjacent dividing plates 822. A filter cotton 81 is placed inside the sealed chamber 823, allowing the filter cotton 81 to rotate with the rotation of the support frame 82. A driven gear 95 is coaxially fixed to the central tube 821. An air pipe 96 is installed inside the central tube 821, and one end of the air pipe 96 is connected to the return pipe 333 via a fixed shaft 71. Figure 6 An air inlet 961 is provided on the air pipe 96, and the air inlet 961 is arranged in an inclined upward position. A through hole 8211 is provided on the central pipe 821 corresponding to the position of each sealing chamber 823. When the sealing chamber 823 is rotated to the inclined upward position, the through hole 8211 is connected to the air inlet 961, so that the return pipe 333 reduces the air pressure in the sealing chamber 823 through the air inlet 961 and the through hole 8211 for a period of time. When the sealing chamber 823 is rotated to the vertical upward position, the sealing chamber 823 takes in air through the elongated groove 72, so that the entire area in the sealing chamber 823 has the same suction force. During the rotation of the support frame 82, the airflow speed fluctuates, and the speed change has a better dust removal effect.

[0038] refer to Figure 4 An installation groove 8221 is provided on the side of the dividing plate 822 away from the central tube 821. A sealing plate 824 is provided in the installation groove 8221. A spring 825 is also provided at the bottom of the installation groove 8221. One end of the spring 825 is fixed to the sealing plate 824, and the other end is fixed to the bottom of the installation groove 8221. One side of the sealing plate 824 extends out of the installation groove 8221 and abuts against the inner wall of the support roller 7 to seal, thereby improving the sealing performance of the sealing chamber 823. The force of the spring 825 is used to drive the sealing plate 824 to extend out of the support roller 7.

[0039] This embodiment also discloses a wire mesh cleaning process, which uses the wire mesh cleaning device disclosed above. The process includes passing the wire mesh 5 through a hot air drying box 3 and an ultrasonic cleaning assembly 4 in sequence. Multiple drying tubes 33 inside the box 31 blow air vertically downwards. At the same time, when the return holes 321 on multiple conveying rollers 32 inside the box 31 are facing upwards, they cooperate with the air outlet holes on the drying tubes 33 to blow air downwards perpendicularly to the wire mesh 5, thereby reducing the concavity formed by the airflow disturbance on the wire mesh 5 during the cleaning process.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire mesh cleaning device, comprising a winding assembly (1) and an unwinding assembly (2), characterized in that: A wire mesh (5) is arranged between the winding assembly (1) and the unwinding assembly (2). A hot air drying box (3) and a gas phase ultrasonic cleaner are arranged sequentially between the winding assembly (1) and the unwinding assembly (2) along the conveying direction of the wire mesh (5). The hot air drying box (3) includes a box body (31) and a plurality of conveying rollers (32) arranged sequentially inside the box body (31) along the conveying direction of the wire mesh (5). A drying pipe (33) is arranged above the conveying rollers (32). A hot air blower (332) is connected to the drying pipe (33). A downward-facing air outlet is opened at the lower part of the drying pipe (33).

2. The wire mesh cleaning device according to claim 1, characterized in that: The conveying roller (32) has a hollow interior and a return hole (321) is provided on the side wall of the conveying roller (32). The return hole (321) is connected to a return pipe (333), which is used to connect to the air inlet of the hot air blower (332).

3. The wire mesh cleaning device according to claim 2, characterized in that: The conveying roller (32) is connected to a drive assembly (6) that drives the conveying roller (32) to rotate. A support roller (7) is provided inside the conveying roller (32). The two ends of the support roller (7) are mounted on the housing (31). A long groove (72) is opened on the upper part of the support roller (7). The return holes (321) are evenly arranged along the periphery of the conveying roller (32).

4. The wire mesh cleaning device according to claim 3, characterized in that: The support roller (7) has a hollow structure inside, and the return pipe (333) is connected to the inside of the support roller (7). A filter assembly (8) is provided inside the support roller (7).

5. The wire mesh cleaning device according to claim 4, characterized in that: The filter assembly (8) includes a support frame (82) and filter cotton (81). The support frame (82) is rotatably connected to the support roller (7). The filter cotton (81) is installed on the support frame (82). The support frame (82) includes a central tube (821) and multiple dividing plates (822). The multiple dividing plates (822) are evenly distributed along the circumference of the central tube (821). The filter cotton (81) is located between two dividing plates (822). A through hole (8211) is opened on the side wall of the central tube (821), and the through hole (8211) is used to communicate with the return pipe (333).

6. The wire mesh cleaning device according to claim 5, characterized in that: The central tube (821) is provided with an air pipe (96) inside, and an air inlet (961) is provided on the air pipe (96). The air inlet (961) is inclined upward. The air pipe (96) is used to communicate with the return pipe (333). The through hole (8211) is rotated to the inclined position to communicate with the air inlet (961), and after communicating with the air inlet (961), it is rotated to the vertical upward position.

7. The wire mesh cleaning device according to claim 5, characterized in that: A gear ring (91) is coaxially fixed on the conveying roller (32). The end of the support roller (7) is rotatably connected to the transmission shaft (92). One end of the transmission shaft (92) is coaxially fixedly connected to a first gear (93) that meshes with the gear ring (91), and the other end is coaxially fixedly connected to a second gear (94). A driven gear (95) is coaxially fixedly connected on the central tube (821), and the second gear (94) meshes with the driven gear (95).

8. A wire mesh cleaning device according to claim 5, characterized in that: The dividing plate (822) has an installation groove (8221) on the side away from the central tube (821). A sealing plate (824) is provided in the installation groove (8221). A spring (825) is provided at the bottom of the installation groove (8221). One end of the spring (825) is fixed on the sealing plate (824), and the other end is fixed at the bottom of the sealing groove.

9. A wire mesh cleaning device according to claim 1, characterized in that: The drying tube (33) is connected to a conveying tube (331). One end of the conveying tube (331) is located in the middle of the length of the drying tube (33), and the other end is used to connect to a hot air blower (332).

10. A wire mesh cleaning process, employing a wire mesh cleaning device according to any one of claims 1-9, characterized in that: The process involves passing the wire mesh (5) through a hot air drying box (3) and an ultrasonic cleaning assembly (4) in sequence. The drying tube (33) inside the box (31) of the hot air drying box (3) blows air vertically downwards. When the return holes (321) on the multiple conveying rollers (32) arranged inside the box (31) face upwards, they work in conjunction with the air outlet on the drying tube (33) to blow the airflow downwards perpendicularly to the wire mesh (5).

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