Cleaning and drying apparatus for sheet material

Abstract

The utility model discloses a cleaning and drying equipment of board material relates to the technical field of board cleaning, including the cleaning unit, water absorption unit, first drying unit and second drying unit who arranges in proper order, the first conveying unit is installed in the inside of cleaning unit, the second conveying unit is installed in the inside of first drying unit and second drying unit, in the technical scheme provided by the utility model, through setting water absorption unit, specifically, if a plurality of hollow roll shafts in water absorption unit adopt up and down arrangement, the water absorption sponge roller of fixed outer wall can be flexibly attached from the upper and lower two sides of board material, avoid rigid friction damage board material, at the same time, the high flow suction pump is communicated with the hollow roll shaft inside through the swivel joint, suction pipe and hollow roll shaft, and the moisture adsorbed by the sponge roller can be pumped to the liquid storage tank in real time through the water absorption hole of the side wall of the hollow roll shaft, to ensure that the sponge roller always maintains good water absorption capacity.

Description

Technical Field

[0001] This utility model relates to the field of board cleaning technology, and in particular to board cleaning and drying equipment. Background Technology

[0002] During the processing of wood panels, cutting debris, dust, oil, and other impurities easily adhere to the surface. If not cleaned in time, these impurities will directly affect the quality of subsequent painting, lamination, and other processing steps, and may even lead to surface defects in the finished panels. Therefore, cleaning and drying the panels is a crucial step in the wood panel processing flow.

[0003] However, when using existing board cleaning and drying equipment, firstly, after cleaning, the boards usually need to be wiped dry to remove excess water. However, the sponges used for absorbing water become saturated after continuous operation, resulting in poor water absorption. Secondly, the cleaning pressure adjustment is limited, with most equipment only having a single cleaning pressure setting. If high-pressure cleaning is used, although it can remove stubborn stains, it is easy to cause scratches and damage to the surface of flexible boards such as wood and plastic. If low-pressure cleaning is used, it is impossible to completely remove oil stains, solidified debris, and other impurities attached to the board surface, resulting in incomplete cleaning. Furthermore, it is inconvenient to adjust the cleaning pressure according to the material. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a cleaning and drying equipment for boards. This equipment addresses the following issues in the prior art: First, after cleaning, the boards usually need to be wiped dry to remove excess water. However, the sponge used for absorbing water becomes saturated after continuous operation, resulting in poor water absorption. Second, the cleaning pressure adjustment is limited, with most equipment only having a single cleaning pressure setting. If high-pressure cleaning is used, although it can remove stubborn stains, it is easy to cause scratches and damage to the surface of flexible boards such as wood and plastic. If low-pressure cleaning is used, it is impossible to completely remove oil stains, solidified debris, and other impurities attached to the surface of the board, resulting in incomplete cleaning. Furthermore, it is inconvenient to adjust the cleaning pressure according to the material.

[0005] In view of this, the present invention provides a cleaning and drying equipment for boards, including a cleaning unit, a water absorption unit, a first drying unit and a second drying unit arranged in sequence. A first conveying unit is installed inside the cleaning unit, and a second conveying unit is installed inside the first drying unit and the second drying unit.

[0006] The water absorption unit includes several hollow rollers, several water absorption holes, a water-absorbing sponge roller, a rotary joint, a liquid storage tank, a suction pipe, a high-flow suction pump, and a drain valve. The hollow rollers are arranged sequentially between the first conveying unit and the second conveying unit. The water-absorbing sponge roller is fixedly installed on the outer wall of the hollow roller. Several water absorption holes are opened on the side wall of the hollow roller. The rotary joint is fixedly installed at one end of the hollow roller. The liquid storage tank is located between the cleaning unit and the first drying unit. The suction pipe is fixedly installed between the rotary joint and the liquid storage tank. The high-flow suction pump is fixedly installed on one side of the liquid storage tank. The drain valve is fixedly installed at the bottom of the liquid storage tank.

[0007] Optionally, several of the hollow rollers are arranged vertically.

[0008] Optionally, one end of the rotary joint is connected to the interior of the hollow roller shaft, one end of the suction tube is connected to the other end of the rotary joint, and the other end of the suction tube is connected to the interior of the liquid storage tank.

[0009] Optionally, the suction end of the high-flow-rate suction pump is connected to the inside of the liquid storage tank.

[0010] Optionally, the cleaning unit is provided with a low-pressure cleaning zone, a medium-pressure cleaning zone and a high-pressure cleaning zone in sequence.

[0011] Optionally, the low-pressure cleaning zone, medium-pressure cleaning zone, and high-pressure cleaning zone each include a liquid supply pipe, a cleaning nozzle, a flow control solenoid valve, and a pressure sensor. The cleaning nozzle is fixedly installed at one end of the liquid supply pipe, the flow control solenoid valve is fixedly installed in the middle of the liquid supply pipe, and the pressure sensor is installed in the section of the liquid supply pipe located between the cleaning nozzle and the flow control solenoid valve.

[0012] Optionally, the pressure sensor detection end is located inside the liquid supply pipe.

[0013] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0014] 1. The board cleaning and drying equipment of this utility model, by setting up a water absorption unit, specifically, several hollow rollers in the water absorption unit are arranged vertically, and the water-absorbing sponge rollers fixed on the outer wall can flexibly adhere to both the top and bottom surfaces of the board, avoiding damage to the board by hard friction; at the same time, a high-flow suction pump is connected to the inside of the hollow rollers through a rotary joint and suction pipe, and the water absorbed by the sponge rollers can be pumped to the storage tank in real time through the water absorption holes on the side wall of the hollow rollers, ensuring that the sponge rollers always maintain good water absorption capacity. In addition, the storage tank can temporarily store and recover water, which can be reused after treatment, thereby improving dehydration efficiency, saving water resources, and ensuring continuous and stable operation of the equipment.

[0015] 2. This utility model's board cleaning and drying equipment, through its three-stage cleaning zones (low-pressure, medium-pressure, and high-pressure) sequentially arranged within the cleaning unit, coupled with pressure sensors and flow control solenoid valves on the liquid supply pipe, solves the problems of existing equipment's single cleaning pressure adjustment, incomplete cleaning, or easy damage to the boards. The three-stage cleaning zones form a gradient cleaning process: the low-pressure zone first removes floating dust, the medium-pressure zone removes oil stains, and the high-pressure zone removes stubborn debris, adapting to different board materials. The pressure sensor monitors the pressure in the liquid supply pipe in real time; if it deviates from the preset value, the flow control solenoid valve can quickly adjust the liquid supply flow to ensure stable cleaning pressure and consistent cleaning results for the same batch of boards. Simultaneously, different cleaning zones can be flexibly started and stopped according to the stains and material of the board, reducing unnecessary energy consumption and balancing cleaning quality and operating costs.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a partial structural diagram of the water absorption unit of this utility model;

[0021] Figure 4 This is a partial structural diagram of the cleaning unit of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Cleaning unit; 2. First conveying unit; 3. Second conveying unit; 101. Low-pressure cleaning zone; 102. Medium-pressure cleaning zone; 103. High-pressure cleaning zone; 4. Water suction unit; 401. Hollow roller shaft; 402. Water suction hole; 403. Water-absorbing sponge roller; 404. Rotary joint; 405. Liquid storage tank; 406. Suction pipe; 407. High-flow suction pump; 408. Water discharge valve; 5. First drying unit; 6. Second drying unit; 801. Liquid supply pipe; 802. Cleaning nozzle; 803. Flow control solenoid valve; 804. Pressure sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] The following describes in detail, with reference to the accompanying drawings, the plate cleaning and drying equipment of this utility model embodiment.

[0025] Example 1

[0026] For easier understanding, please refer to Figures 1 to 4 An embodiment of the board cleaning and drying equipment provided by this utility model includes a cleaning unit 1, a water absorption unit 4, a first drying unit 5 and a second drying unit 6 arranged in sequence. A first conveying unit 2 is installed inside the cleaning unit 1, and a second conveying unit 3 is installed inside the first drying unit 5 and the second drying unit 6.

[0027] The water absorption unit 4 includes several hollow rollers 401, several water absorption holes 402, a water-absorbing sponge roller 403, a rotary joint 404, a liquid storage tank 405, a suction pipe 406, a high-flow suction pump 407, and a drain valve 408. The hollow rollers 401 are arranged sequentially between the first conveying unit 2 and the second conveying unit 3. The water-absorbing sponge roller 403 is fixedly installed on the outer wall of the hollow rollers 401. The water absorption holes 402 are opened on the side wall of the hollow rollers 401. The rotary joint 404 is fixedly installed at one end of the hollow rollers 401. The liquid storage tank 405 is located between the cleaning unit 1 and the first drying unit 5. The suction pipe 406 is fixedly installed... A high-flow suction pump 407 is fixedly installed on one side of the liquid storage tank 405, and a drain valve 408 is fixedly installed at the bottom of the liquid storage tank 405. Several hollow rollers 401 are arranged vertically. One end of the rotary joint 404 is connected to the inside of the hollow roller 401. One end of the suction pipe 406 is connected to the other end of the rotary joint 404, and the other end of the suction pipe 406 is connected to the inside of the liquid storage tank 405. The suction end of the high-flow suction pump 407 is connected to the inside of the liquid storage tank 405. The cleaning unit 1 is provided with a low-pressure cleaning zone 101, a medium-pressure cleaning zone 102, and a high-pressure cleaning zone 103 in sequence.

[0028] The first conveying unit 2 and the second conveying unit 3 adopt an electric roller conveyor structure, specifically including a drive motor (e.g., model Y80M1-2, power 0.75kW, speed 2800r / min), several transmission rollers (e.g., material 304 stainless steel, diameter 50mm, length adapted to the equipment, adjacent roller spacing 100mm), and a support bracket (e.g., material Q235 steel plate welded and surface sprayed with anti-rust paint); the drive motor is connected to the sprocket at the end of the transmission roller through a chain, and the conveying speed can be adjusted by a frequency converter (e.g., adjustment range 0.5-2m / min), adapting to the stable conveying of boards of different thicknesses (e.g., 3-50mm) and different materials (solid wood, MDF, metal plate), and the surface of the transmission roller is covered with a wear-resistant rubber layer (e.g., thickness 3mm) to avoid scratching the edges of the boards during the conveying process;

[0029] The first drying unit 5 and the second drying unit 6 adopt a hot air circulation drying structure, both including stainless steel heating tubes (e.g., model 304 stainless steel, power 3kW, quantity 4 tubes, evenly distributed at the top and bottom of the drying unit) and centrifugal fans (e.g., model CF-11, power 1.1kW, air volume 1200m³ / h). 3 The drying unit consists of a temperature sensor (e.g., PT100, measuring range 0-150℃, accuracy ±0.5℃) and an insulation shell (e.g., made of color steel plate, with a 50mm thick rock wool insulation layer inside to reduce heat loss); the drying unit is equipped with an air guide plate to create a circulating airflow, ensuring uniform heating of the sheet surface; the temperature sensor is electrically connected to the equipment control system, the first drying unit 5 performs initial low-temperature drying, and the second drying unit 6 further heats up the drying process;

[0030] It should be noted that in the water absorption unit 4, the hollow roller 401 is made of 304 stainless steel (e.g., wall thickness 3mm, diameter 80mm), and the water absorption holes 402 on the side wall are circular holes (e.g., diameter 3mm, evenly distributed along the roller shaft axis, with a row spacing of 20mm, and 4 rows distributed circumferentially), ensuring that the water absorbed by the sponge roller can quickly enter the interior of the roller shaft; the water-absorbing sponge roller 403 is made of high-density polyurethane sponge (e.g., density 30kg / m³). 3 The sponge roller (20mm thick) is fixed to the outer wall of the hollow roller shaft 401 with adhesive (such as model 801 strong adhesive). The surface of the sponge roller is hydrophilic to improve water absorption efficiency. The high-flow suction pump 407, model RB-81D-2, has a suction flow rate of 150m³ / h. 3 / h, during operation, a negative pressure of -0.03MPa can be formed inside the hollow roller 401 to quickly pump the water in the sponge roller to the liquid storage tank 405 (e.g., PE material, 50L volume, with a vent at the top to prevent negative pressure from affecting the suction); the drain valve 408 is a ball valve (e.g., model Q11F-16, diameter DN25). When the water level in the liquid storage tank 405 reaches 80%, the valve can be opened to discharge the wastewater. If recycling is required, a filter device (e.g., a PP cotton filter) can be connected to the outlet of the drain valve 408 to filter the wastewater before it is reintroduced to the liquid supply system of the cleaning unit 1. The hollow roller 401 located above can be adjusted in height. This function is a common existing technology and will not be described in detail here.

[0031] Example 2

[0032] In some embodiments, such as Figure 1 , Figure 4As shown, the low-pressure cleaning zone 101, the medium-pressure cleaning zone 102, and the high-pressure cleaning zone 103 each include a liquid supply pipe 801, a cleaning nozzle 802, a flow control solenoid valve 803, and a pressure sensor 804. The cleaning nozzle 802 is fixedly installed at one end of the liquid supply pipe 801, the flow control solenoid valve 803 is fixedly installed in the middle of the liquid supply pipe 801, and the pressure sensor 804 is installed in the section of the liquid supply pipe 801 between the cleaning nozzle 802 and the flow control solenoid valve 803. The detection end of the pressure sensor 804 is located inside the liquid supply pipe 801.

[0033] It should be noted that the liquid supply pipe 801 uses PVC-U pipe (e.g., nominal diameter 25mm, wall thickness 2.8mm). Each liquid supply pipe corresponds to one cleaning zone, and the liquid supply pipe 801 for each cleaning zone is connected to an external liquid supply pump (e.g., model ISG50-160, head 32m, flow rate 12.5m). 3 The system connects to the ( / h) connection to ensure a stable supply of cleaning fluid (usually water; if oil removal is required, a neutral detergent can be added at a concentration of 0.5-1%). The cleaning nozzle 802 is a fan-shaped atomizing nozzle (e.g., model SS-1 / 4JJ, spray angle 60°, orifice diameter 1.5mm). Six nozzles are evenly installed on each supply pipe 801 (symmetrically distributed vertically, with a 150mm distance between the nozzle and the board surface) to ensure uniform coverage of the cleaning fluid. The flow control solenoid valve 803 can independently control each cleaning zone through the equipment control system. The pressure sensor 804, model MPX5010, measures flow rate with a range of 0-1MPa and an accuracy of 0.5%FS. Its output signal (4-20mA analog signal) is transmitted to the control system. If the pressure in the low-pressure cleaning zone 101 is lower than 0.2MPa, the pressure in the medium-pressure cleaning zone 102 is lower than 0.4MPa, or the pressure in the high-pressure cleaning zone 103 is lower than 0.6MPa, the system will automatically adjust the speed of the liquid supply pump to increase the liquid supply pressure, ensuring that the pressure in each cleaning zone is stable within the preset range and avoiding inconsistent cleaning results due to pressure fluctuations.

[0034] Working principle: First, the board to be cleaned is placed at the feed end of the first conveying unit 2. After starting the equipment, the first conveying unit 2 conveys the board to the cleaning unit 1. Then, the board first enters the low-pressure cleaning zone 101, where low-pressure water flow removes surface dust and loose debris; then it enters the medium-pressure cleaning zone 102, where medium-pressure water flow removes surface oil and sticky impurities; finally, it enters the high-pressure cleaning zone 103, where high-pressure water flow removes residual stubborn solidified debris. The pressure sensor 804 monitors the pressure in each zone in real time, and the flow control solenoid valve 803 adjusts the liquid supply according to the degree of soiling on the board to ensure thorough cleaning without damaging the board. After cleaning, the board is sent by the first conveying unit 2 to the water absorption unit 4. The hollow rollers 401 arranged vertically rotate synchronously with the board conveying, and the outer wall... The absorbent sponge roller 403 closely adheres to the upper and lower surfaces of the board, absorbing surface moisture. Simultaneously, the high-flow suction pump 407 starts, creating negative pressure inside the hollow roller shaft 401. The moisture absorbed by the sponge roller enters the roller shaft through the suction holes 402, and is then transported to the liquid storage tank 405 through the rotary joint 404 and suction pipe 406, achieving real-time dehydration of the sponge roller and preventing saturation. The board that has completed water absorption enters the second conveying unit 3, and is first sent to the first drying unit 5, where circulating hot air initially removes the shallow moisture remaining on the surface of the board. Subsequently, it enters the second drying unit 6, where circulating hot air further dries the deeper moisture. A temperature sensor monitors the drying temperature in real time to prevent overheating and damage to the board. The dried board is then discharged from the discharge end of the second conveying unit 3, completing the entire cleaning and drying process.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning and drying equipment for boards, characterized in that: It includes a washing unit (1), a water absorption unit (4), a first drying unit (5) and a second drying unit (6) arranged in sequence. The washing unit (1) is equipped with a first conveying unit (2), and the first drying unit (5) and the second drying unit (6) are equipped with a second conveying unit (3). The water absorption unit (4) includes several hollow rollers (401), several water absorption holes (402), a water-absorbing sponge roller (403), a rotary joint (404), a liquid storage tank (405), a suction pipe (406), a high-flow suction pump (407), and a drain valve (408). The hollow rollers (401) are arranged sequentially between the first conveying unit (2) and the second conveying unit (3). The water-absorbing sponge roller (403) is fixedly installed on the outer wall of the hollow rollers (401). A hole (402) is formed on the side wall of the hollow roller shaft (401). The rotary joint (404) is fixedly installed at one end of the hollow roller shaft (401). The liquid storage tank (405) is located between the cleaning unit (1) and the first drying unit (5). The suction pipe (406) is fixedly installed between the rotary joint (404) and the liquid storage tank (405). The high-flow suction pump (407) is fixedly installed on one side of the liquid storage tank (405). The drain valve (408) is fixedly installed at the bottom of the liquid storage tank (405).

2. The board cleaning and drying equipment according to claim 1, characterized in that: Several hollow rollers (401) are arranged vertically.

3. The board cleaning and drying equipment according to claim 1, characterized in that: One end of the rotary joint (404) is connected to the inside of the hollow roller shaft (401), one end of the suction pipe (406) is connected to the other end of the rotary joint (404), and the other end of the suction pipe (406) is connected to the inside of the liquid storage tank (405).

4. The board cleaning and drying equipment according to claim 1, characterized in that: The high-flow suction pump (407) has its suction end connected to the inside of the liquid storage tank (405).

5. The board cleaning and drying equipment according to claim 1, characterized in that: The cleaning unit (1) is provided with a low-pressure cleaning zone (101), a medium-pressure cleaning zone (102) and a high-pressure cleaning zone (103) in sequence.

6. The board cleaning and drying equipment according to claim 5, characterized in that: The low-pressure cleaning zone (101), medium-pressure cleaning zone (102), and high-pressure cleaning zone (103) each include a liquid supply pipe (801), a cleaning nozzle (802), a flow control solenoid valve (803), and a pressure sensor (804). The cleaning nozzle (802) is fixedly installed at one end of the liquid supply pipe (801), the flow control solenoid valve (803) is fixedly installed in the middle of the liquid supply pipe (801), and the pressure sensor (804) is installed in the section of the liquid supply pipe (801) between the cleaning nozzle (802) and the flow control solenoid valve (803).

7. The board cleaning and drying equipment according to claim 6, characterized in that: The detection end of the pressure sensor (804) is located inside the liquid supply pipe (801).

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