Cleaning and drying device and working method thereof

Abstract

The invention belongs to the technical field of general cleaning, provides an all-in-one machine which has no special requirements on color master batches, is different in shape, size and thickness, can clean and dry the color master batches, can filter water after cleaning and saves water resources, and particularly relates to a cleaning and drying device for color master batches and a working method of the cleaning and drying device. The device comprises a semi-ring turning way, a drying tunnel furnace, a cleaning tunnel section, a water tank and an oil-water separator. Stable steering and transition of articles in the cleaning and drying process are achieved through the semi-ring turning way, meanwhile, continuous conveying of the articles on the turning way is guaranteed through the arrangement of the belt, the drying tunnel furnace conducts uniform and efficient drying on the articles, it is guaranteed that moisture can be rapidly removed when the articles pass through the tunnel furnace, and the drying efficiency is improved. The cleaning tunnel section conducts high-pressure spray washing on articles through the spray cleaning cover, the upper spray pipe and the lower spray pipe, dirt and oil stains on the surfaces of the articles are effectively removed, oil and water are separated through the oil-water separator, and grease collection is facilitated through the rotating action of the oil scraping plate.

Description

Technical Field

[0001] The invention belongs to the field of general cleaning technology, and provides an all-in-one machine which has no special requirements for masterbatches, can clean and dry masterbatches of different shapes, sizes and thicknesses, can filter the water after cleaning, and save water resources, and particularly relates to a masterbatch cleaning and drying device and a working method thereof. Background Art

[0002] Masterbatch is a new type of colorant specially used for polymer materials. It is composed of three basic elements: pigment or dye, carrier and additive. It is made by evenly loading the pigment into the resin. Its application in the field of plastic processing has significant advantages, including bright colors, good stability, cost savings, improved production efficiency, environmental protection and safety, etc. The use of masterbatch can reduce the waste and loss of pigments, simplify the production process, realize automated production, and at the same time reduce environmental pollution and comply with environmental protection regulations.

[0003] In the production process, the cleaning and drying of masterbatches are very critical steps. During the processing and production of masterbatches, the finished masterbatches need to be cleaned to remove the dust adsorbed on the surface of the masterbatches in order to obtain high-quality products. However, there are some technical defects in the traditional cleaning process, such as the need to recycle and filter the water after cleaning before reuse, which increases the cost of water resource reuse. In order to solve these problems, the industry has carried out a series of technical innovations. Summary of the invention

[0004] The present invention proposes a cleaning and drying device and a working method thereof. The purpose of the present invention is to provide an all-in-one machine which has no special requirements for masterbatches, can clean and dry masterbatches of different shapes, sizes and thicknesses, can filter the water after cleaning, and save water resources.

[0005] The technical solution of the present invention is as follows: a cleaning and drying device, comprising: Semi-circular turns, the number of the semi-circular turns is two; Drying tunnel furnace; Cleaning of tunnel sections; Water tank; Oil-water separator; The semi-circular turning track is arranged on both sides of the drying tunnel furnace and the cleaning tunnel section, the water tank is arranged below the cleaning tunnel section, and the oil-water separator is arranged on the top of the water tank.

[0006] As a preferred solution of the present invention, the semi-circular turning track includes a guide roller, a turning bracket, a tapered cylinder and a belt; The turning bracket is arranged in the middle position of the semi-circular turning track, a plurality of conical cylinder arrays are evenly distributed on the turning bracket, a plurality of guide roller arrays are evenly distributed in the hollowed-out part of the inner wall of the semi-circular turning track, and the belt passes through the drying tunnel furnace and the cleaning tunnel section and covers the two semi-circular turning tracks.

[0007] As a preferred embodiment of the present invention, the drying tunnel furnace comprises a supporting shell, a first driver, a tunnel shell, a hot air pipe, a heating and heat insulation cover, an air drying fan, a first driving shaft, a lifting plate, an upper air jet pipe and a lower air jet pipe; The tunnel shell is installed on the supporting shell, the upper air injection pipe and the lower air injection pipe are installed on both sides of the drying tunnel furnace in a staggered direction, the lifting plate is installed on both sides of the inner wall of the drying tunnel furnace for supporting the belt, the first driver is arranged on one side of the drying tunnel furnace, one end of the first driving shaft is fixedly connected to the output end of the first driver, the first driving shaft is used to drive the belt on the drying side, and two inspection doors are provided on the other side of the drying tunnel furnace; The air drying fan is installed on the tunnel shell, the air duct of the heating and heat insulation cover is connected to the air outlet of the air drying fan, an electric heating wire is installed inside the heating and heat insulation cover, and the hot air duct is connected to the air outlet of the heating and heat insulation cover.

[0008] As a preferred solution of the present invention, the cleaning tunnel section includes a semi-sealed box plate, a second drive shaft, a spray cleaning cover, an oil filter fan, an oil removal cylinder, a rubber door curtain, an upper spray pipe, a lower spray pipe, a material baffle, a second drive, a water suction pump, a filter cloth cylinder and a base; The spray cleaning cover is installed on the semi-sealed box plate, the upper spray pipe and the lower spray pipe are installed on both sides of the cleaning tunnel section in a staggered direction, the baffle plates are installed on both sides of the inner wall of the cleaning tunnel section, used to support the belt and prevent the cleaning sewage from splashing, the second driver is arranged on one side of the cleaning tunnel section, one end of the second drive shaft is fixedly connected to the output end of the second driver, the second drive shaft is used to drive the belt on the cleaning side, two inspection doors are opened on the other side of the cleaning tunnel section, and two sets of rubber door curtains are installed at the inlet and outlet of the cleaning tunnel section and the drying tunnel furnace; The base is installed on the spray cleaning cover, the oil removal cylinder is connected to the base, the oil filter fan air inlet duct is connected to the spray cleaning cover, the oil filter fan air outlet duct is connected to the air inlet of the base, and the filter cloth cylinder is arranged in the oil removal cylinder.

[0009] As a preferred solution of the present invention, the water tank comprises a first opening, a second opening and a filter screen; The first opening is opened on one side of the top of the water tank, and the second opening is opened on the other side of the top of the water tank. The filter screen is arranged on the first opening and the second opening to filter out small masterbatch or fine foreign matter that does not meet the specifications.

[0010] As a preferred solution of the present invention, the oil-water separator comprises a flap, a cover, an oil outlet pipe, an oil scraper and a third driver; A cover plate is provided at the bottom of the cover shell, a flip cover is installed on the cover shell, an oil outlet pipe is connected to the opening of the cover plate, the oil scraper is circular, a rotating shaft is fixedly inserted at the center position of the oil scraper, and an output end of the third driver is fixed at one end of the rotating shaft for driving the oil scraper to rotate.

[0011] The working method of the cleaning and drying device comprises the following steps: S1, the masterbatch is first transported to the cleaning tunnel section, in which the masterbatch is cleaned by the staggered spray system of the spray cleaning hood and the upper and lower spray pipes. During the cleaning process, the second drive drives the second drive shaft to rotate, driving the belt on the cleaning side, so that the masterbatch is continuously moved during the cleaning process; S2, the wastewater generated during the cleaning process flows into the water tank through two filters; S3, the cleaned masterbatch is transported to the drying tunnel furnace through the semi-circular turn. The air drying fan and hot air duct system in the drying tunnel furnace blow hot air to the masterbatch. The first driver drives the first drive shaft to rotate, driving the belt on the drying side, so that the masterbatch moves continuously during the drying process; S4, the dried masterbatch enters the cleaning tunnel section again for cleaning. At this time, the masterbatch temperature is relatively high and a large amount of gas is generated after being sprayed with water. The gas is sucked into the oil removal cylinder by the oil filter fan for filtration; S5, the masterbatch is cleaned and dried three times in a reciprocating cycle, and the third driver is started to drive the oil scraper to rotate. The oil scraper scrapes the oil in the wastewater into the cover shell and finally discharges it through the oil outlet pipe.

[0012] The beneficial effects of the present invention are: The waste water generated during the cleaning process of the present invention flows into the water tank through the filter screen, and the cleaning water can be collected and used in subsequent cleaning processes, thereby reducing the demand for fresh water resources.

[0013] The invention can realize efficient cleaning of masterbatch by means of a spray cleaning cover and an interlaced spray system of upper and lower spray pipes. This design can achieve good cleaning effect with less water consumption.

[0014] The oil-water separator of the present invention can effectively separate the oil in the wastewater, and the treated water can be reused in the cleaning process, further reducing the demand for fresh water.

[0015] The air drying fan and the hot air pipe system in the drying tunnel furnace of the present invention use hot air to dry the masterbatch, and this process does not require additional water, which helps to save water resources.

[0016] The present invention can ensure the cleanliness of the masterbatch through multiple cleaning and drying cycles, and at the same time, due to the recycling of waste water, the overall water consumption is effectively controlled.

[0017] The automatic control of the driver and the drive shaft of the present invention can accurately control the cleaning and drying processes, thereby reducing the waste of water resources caused by improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the cleaning tunnel section of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cleaning tunnel section of the present invention; Figure 4 It is a schematic diagram of the structure of the drying tunnel furnace of the present invention; Figure 5 This is a schematic diagram of the interior of the drying tunnel furnace of the present invention; Figure 6 It is a schematic diagram of the internal structure of the oil removal cylinder of the present invention; Figure 7 It is a schematic diagram of the structure of the oil-water separator of the present invention; Figure 8 It is a schematic diagram of the semi-circular turn structure of the present invention.

[0020] In the figure: 1, semi-circular turning track; 101, guide roller; 102, turning bracket; 103, tapered cylinder; 104, belt; 2. Drying tunnel furnace; 201. Support shell; 202. First driver; 203. Tunnel shell; 204. Hot air pipe; 205. Heating and heat insulation cover; 206. Air drying fan; 207. First drive shaft; 208. Lifting plate; 209. Upper jet pipe; 210. Lower jet pipe; 3. Cleaning tunnel section; 301. Half-sealed box plate; 302. Second drive shaft; 303. Spray cleaning hood; 304. Oil filter fan; 305. Oil removal cylinder; 306. Rubber door curtain; 307. Upper spray pipe; 308. Lower spray pipe; 309. Material blocking plate; 310. Second drive; 311. Water suction pump; 312. Filter cloth cylinder; 313. Base; 4. water tank; 401. first opening; 402. second opening; 403. filter; 5. Oil-water separator; 501. flip cover; 502. cover; 503. oil outlet pipe; 504. oil scraper; 505. third driver. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 like Figure 1 to Figure 8 As shown, this embodiment provides a cleaning and drying device, including a semi-circular turn track 1, and the number of the semi-circular turn tracks 1 is two; Drying tunnel furnace 2; Cleaning tunnel section 3; Water tank 4; Oil-water separator 5; The semi-circular turning channel 1 is arranged on both sides of the drying tunnel furnace 2 and the cleaning tunnel section 3, the water tank 4 is arranged below the cleaning tunnel section 3, and the oil-water separator 5 is arranged on the top of the water tank 4.

[0023] like Figure 1 to Figure 8 As shown, the semi-circular turning track 1 includes a guide roller 101, a turning bracket 102, a tapered cylinder 103 and a belt 104; The turning bracket 102 is arranged in the middle position of the semi-circular turning track 1, a plurality of conical cylinders 103 are evenly distributed in an array on the turning bracket 102, a plurality of guide rollers 101 are evenly distributed in an array on the hollow inner wall of the semi-circular turning track 1, and a belt 104 passes through the drying tunnel furnace 2 and the cleaning tunnel section 3 and covers the two semi-circular turning tracks 1.

[0024] like Figure 1 to Figure 8 As shown, the drying tunnel furnace 2 includes a supporting shell 201, a first driver 202, a tunnel shell 203, a hot air pipe 204, a heating and heat insulation cover 205, an air drying fan 206, a first driving shaft 207, a lifting plate 208, an upper air injection pipe 209 and a lower air injection pipe 210; The tunnel shell 203 is installed on the supporting shell 201, the upper air jet pipe 209 and the lower air jet pipe 210 are installed on both sides of the drying tunnel furnace 2 in a staggered direction, the lifting plate 208 is installed on both sides of the inner wall of the drying tunnel furnace 2, and is used to support the belt 104. The first driver 202 is arranged on one side of the drying tunnel furnace 2, and one end of the first driving shaft 207 is fixedly connected to the output end of the first driver 202. The first driving shaft 207 is used to drive the belt 104 on the drying side. Two inspection doors are provided on the other side of the drying tunnel furnace 2; The air drying fan 206 is installed on the tunnel shell 203, the air duct of the heating and heat insulation cover 205 is connected to the air outlet of the air drying fan 206, an electric heating wire is installed inside the heating and heat insulation cover, and the hot air duct 204 is connected to the air outlet of the heating and heat insulation cover.

[0025] like Figure 1 to Figure 8 As shown, the cleaning tunnel section 3 includes a semi-sealed box plate 301, a second drive shaft 302, a spray cleaning cover 303, an oil filter fan 304, an oil removal cylinder 305, a rubber door curtain 306, an upper spray pipe 307, a lower spray pipe 308, a material blocking plate 309, a second driver 310, a water suction pump 311, a filter cloth cylinder 312 and a base 313; The spray cleaning cover 303 is installed on the semi-sealed box plate 301, the upper spray pipe 307 and the lower spray pipe 308 are installed on both sides of the cleaning tunnel section 3 in a staggered direction, and the material blocking plate 309 is installed on both sides of the inner wall of the cleaning tunnel section 3 to support the belt 104 and prevent the cleaning sewage from splashing. The second driver 310 is arranged on one side of the cleaning tunnel section 3, and one end of the second drive shaft 302 is fixedly connected to the output end of the second driver 310. The second drive shaft 302 is used to drive the belt 104 on the cleaning side. Two inspection doors are opened on the other side of the cleaning tunnel section 3, and two sets of rubber door curtains 306 are installed at the inlet and outlet of the cleaning tunnel section 3 and the drying tunnel furnace 2; The base 313 is installed on the spray cleaning cover 303, the oil removal cylinder 305 is connected to the base 313, the air inlet duct of the oil filter fan 304 is connected to the spray cleaning cover 303, the air outlet duct of the oil filter fan 304 is connected to the air inlet of the base 313, and the filter cloth cylinder 312 is arranged in the oil removal cylinder 305.

[0026] In this embodiment, the semi-circular turning track 1 is used to guide and transport articles from one area to another, for example, from the cleaning tunnel section 3 to the drying tunnel furnace 2, and includes a guide roller 101, a turning bracket 102, a conical cylinder 103 and a belt 104. These components together ensure a smooth transition of the articles when turning. The drying tunnel furnace 2 is used to dry the cleaned articles, and includes a support shell 201, a first driver 202, a tunnel shell 203, a hot air pipe 204, a heating and heat insulation cover 205, an air-drying fan 206, a first drive shaft 207, a lifting plate 208, an upper air jet pipe 209 and a lower air jet pipe 210. The first driver 202 and the first drive shaft 207 are used to drive the belt 104 to move the articles during the drying process. The hot air pipe 204 and the air-drying fan 206 provide Hot air is supplied to accelerate the drying process. The heating and insulation cover 205 and the electric heating wire are used to generate hot air. The cleaning tunnel section 3 is used to clean items, including a semi-sealed box plate 301, a second drive shaft 302, a spray cleaning cover 303, an oil filter fan 304, an oil removal cylinder 305, a rubber door curtain 306, an upper spray pipe 307, a lower spray pipe 308, a material baffle plate 309, a second driver 310, a water suction pump 311, a filter cloth cylinder 312 and a base 313. The second driver 310 and the second drive shaft 302 are used to drive the belt 104 on the cleaning side to move the items during the cleaning process. The spray cleaning cover 303, the upper spray pipe 307 and the lower spray pipe 308 are used to spray water to clean items. The oil filter fan 304 and the filter cloth cylinder 312 are used to filter the oil-water mixture generated during the cleaning process.

[0027] Example 2 like Figure 1 to Figure 8 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the water tank 4 includes a first opening 401, a second opening 402 and a filter screen 403; The first opening 401 is opened on one side of the top of the water tank 4, and the second opening 402 is opened on the other side of the top of the water tank 4. The filter 403 is arranged on the first opening 401 and the second opening 402 to filter out substandard small masterbatches or fine foreign particles.

[0028] like Figure 1 to Figure 8 As shown, the oil-water separator 5 includes a flip cover 501, a cover 502, an oil outlet pipe 503, an oil scraper 504 and a third driver 505; A cover plate is provided at the bottom of the cover shell 502, the flip cover 501 is installed on the cover shell 502, the oil outlet pipe 503 is connected to the opening of the cover plate, the oil scraper plate 504 is circular, and a rotating shaft is fixedly inserted at the center position of the oil scraper plate 504, and the output end of the third driver 505 is fixed at one end of the rotating shaft for driving the oil scraper plate 504 to rotate.

[0029] In this embodiment, the first opening 401 and the second opening 402 are located on both sides of the top of the water tank 4 for water inlet and outlet. The filter 403 is arranged on the first opening 401 and the second opening 402 for filtering out impurities in the water, such as small masterbatch or fine foreign matter that does not meet the specifications, so as to ensure the cleanliness of the washing water. The flip cover 501 is installed on the cover 502, which may be used to conveniently access and maintain the inside of the oil-water separator 5. The cover 502 constitutes the main body of the oil-water separator 5 for accommodating and separating the oil-water separator 5. The oil outlet pipe 503 is connected to the opening of the cover plate to discharge the separated oil. The scraper plate 504 is circular and is used to scrape the oil layer on the water surface to separate the oil and water. The third driver 505 is fixed to one end of the rotating shaft in the center of the scraper plate 504 to drive the scraper plate 504 to rotate to achieve oil and water separation. The lifting plate 208 (located in the drying tunnel furnace 2) is used to support the belt 104 to ensure that the belt 104 runs stably in the drying tunnel furnace 2, and may also help to evenly distribute heat. The pipe 209 and the lower jet pipe 210 (located in the drying tunnel furnace 2) are installed in staggered directions to spray hot air to the items from different angles to achieve a more uniform drying effect. The rubber door curtain 306 is installed at the entrance and exit of the cleaning tunnel section 3 and the drying tunnel furnace 2 to prevent the loss of water vapor and heat and improve energy efficiency. The baffle plate 309 (located in the cleaning tunnel section 3) is used to support the belt 104 to prevent the items from moving or falling during the cleaning process, and at the same time to prevent the splashing of cleaning sewage to keep the working environment clean. The inspection door is arranged on one side of the drying tunnel furnace 2 and the cleaning tunnel section 3, which is used for maintenance and inspection of the equipment to ensure the normal operation of the equipment. The oil removal cylinder 305 and the filter cloth cylinder 312 (located in the cleaning tunnel section 3) are used to collect and process the oil-water mixture generated during the cleaning process. The filter cloth cylinder 312 is arranged in the oil removal cylinder 305 to further filter and separate the oil and water. The water suction pump 311 (located in the cleaning tunnel section 3) is used to extract the cleaned water from the water tank 4, which may be used for recycling or discharge.

[0030] The present invention also provides a working method of the cleaning and drying device, comprising the following steps: S1. The masterbatch is first transported to the cleaning tunnel section 3. In the cleaning tunnel section 3, the masterbatch is cleaned by the staggered spray system of the spray cleaning cover 303 and the upper and lower spray pipes 308. During the cleaning process, the second driver 310 drives the second drive shaft 302 to rotate, driving the belt 104 on the cleaning side, so that the masterbatch is continuously moved during the cleaning process. S2. The waste water generated during the cleaning process flows into the water tank 4 through the two filter screens 403. S3. The cleaned masterbatch is transported to the drying tunnel furnace 2 through the semi-circular turn 1. The air drying fan 206 and the hot air pipe 204 system in the drying tunnel furnace 2 blow the hot air to Masterbatch, the first driver 202 drives the first drive shaft 207 to rotate, driving the belt 104 on the drying side, so that the masterbatch is continuously moved during the drying process, S4, the dried masterbatch enters the cleaning tunnel section 3 again for cleaning, at this time the masterbatch temperature is relatively high and a large amount of gas is generated after being sprayed with water, the gas is sucked into the oil removal cylinder 305 by the oil filter fan 304 for filtration, S5, the cycle is repeated, the masterbatch is cleaned and dried three times, the third driver 505 is started, driving the scraper plate 504 to rotate, the scraper plate 504 scrapes the oil in the wastewater into the cover 502, and finally discharges it through the oil outlet pipe 503.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning and drying device, characterized in that: include: Semi-circular turns, the number of the semi-circular turns is two; Drying tunnel furnace; Cleaning of tunnel sections; Water tank; Oil-water separator; The semi-circular turning track is arranged on both sides of the drying tunnel furnace and the cleaning tunnel section, the water tank is arranged below the cleaning tunnel section, and the oil-water separator is arranged on the top of the water tank.

2. The cleaning and drying device according to claim 1, characterized in that: The semi-circular turning track includes a guide roller, a turning bracket, a tapered cylinder and a belt; The turning bracket is arranged in the middle position of the semi-circular turning track, a plurality of conical cylinder arrays are evenly distributed on the turning bracket, a plurality of guide roller arrays are evenly distributed in the hollowed-out part of the inner wall of the semi-circular turning track, and the belt passes through the drying tunnel furnace and the cleaning tunnel section and covers the two semi-circular turning tracks.

3. The cleaning and drying device according to claim 1, characterized in that: The drying tunnel furnace comprises a supporting shell, a first driver, a tunnel shell, a hot air pipe, a heating and heat insulation cover, an air drying fan, a first driving shaft, a lifting plate, an upper air injection pipe and a lower air injection pipe; The tunnel shell is installed on the supporting shell, the upper air injection pipe and the lower air injection pipe are installed on both sides of the drying tunnel furnace in a staggered direction, the lifting plate is installed on both sides of the inner wall of the drying tunnel furnace for supporting the belt, the first driver is arranged on one side of the drying tunnel furnace, one end of the first driving shaft is fixedly connected to the output end of the first driver, the first driving shaft is used to drive the belt on the drying side, and two inspection doors are provided on the other side of the drying tunnel furnace; The air drying fan is installed on the tunnel shell, the air duct of the heating and heat insulation cover is connected to the air outlet of the air drying fan, an electric heating wire is installed inside the heating and heat insulation cover, and the hot air duct is connected to the air outlet of the heating and heat insulation cover.

4. The cleaning and drying device according to claim 1, characterized in that: The cleaning tunnel section includes a semi-sealed box plate, a second drive shaft, a spray cleaning cover, an oil filter fan, an oil removal cylinder, a rubber door curtain, an upper spray pipe, a lower spray pipe, a material baffle, a second drive, a water suction pump, a filter cloth cylinder and a base; The spray cleaning cover is installed on the semi-sealed box plate, the upper spray pipe and the lower spray pipe are installed on both sides of the cleaning tunnel section in a staggered direction, the baffle plates are installed on both sides of the inner wall of the cleaning tunnel section, used to support the belt and prevent the cleaning sewage from splashing, the second driver is arranged on one side of the cleaning tunnel section, one end of the second drive shaft is fixedly connected to the output end of the second driver, the second drive shaft is used to drive the belt on the cleaning side, two inspection doors are opened on the other side of the cleaning tunnel section, and two sets of rubber door curtains are installed at the inlet and outlet of the cleaning tunnel section and the drying tunnel furnace; The base is installed on the spray cleaning cover, the oil removal cylinder is connected to the base, the oil filter fan air inlet duct is connected to the spray cleaning cover, the oil filter fan air outlet duct is connected to the air inlet of the base, and the filter cloth cylinder is arranged in the oil removal cylinder.

5. The cleaning and drying device according to claim 1, characterized in that: The water tank comprises a first opening, a second opening and a filter screen; The first opening is opened on one side of the top of the water tank, and the second opening is opened on the other side of the top of the water tank. The filter screen is arranged on the first opening and the second opening to filter out small masterbatch or fine foreign matter that does not meet the specifications.

6. The cleaning and drying device according to claim 1, characterized in that: The oil-water separator comprises a flap, a cover, an oil outlet pipe, an oil scraper and a third driver; A cover plate is provided at the bottom of the cover shell, a flip cover is installed on the cover shell, an oil outlet pipe is connected to the opening of the cover plate, the oil scraper is circular, a rotating shaft is fixedly inserted at the center position of the oil scraper, and an output end of the third driver is fixed at one end of the rotating shaft for driving the oil scraper to rotate.

7. A method for operating a cleaning and drying device, using the cleaning and drying device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, the masterbatch is first transported to the cleaning tunnel section, in which the masterbatch is cleaned by the staggered spray system of the spray cleaning hood and the upper and lower spray pipes. During the cleaning process, the second drive drives the second drive shaft to rotate, driving the belt on the cleaning side, so that the masterbatch is continuously moved during the cleaning process; S2, the wastewater generated during the cleaning process flows into the water tank through two filters; S3, the cleaned masterbatch is transported to the drying tunnel furnace through the semi-circular turn. The air drying fan and hot air duct system in the drying tunnel furnace blow hot air to the masterbatch. The first driver drives the first drive shaft to rotate, driving the belt on the drying side, so that the masterbatch moves continuously during the drying process; S4, the dried masterbatch enters the cleaning tunnel section again for cleaning. At this time, the masterbatch temperature is relatively high and a large amount of gas is generated after being sprayed with water. The gas is sucked into the oil removal cylinder by the oil filter fan for filtration; S5, the masterbatch is cleaned and dried three times in a reciprocating cycle, and the third driver is started to drive the oil scraper to rotate. The oil scraper scrapes the oil in the wastewater into the cover shell and finally discharges it through the oil outlet pipe.

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