Water tank for plastic film cleaning machine

Abstract

The utility model discloses a water tank for a plastic film cleaning machine, and belongs to the technical field of plastic film production. The water tank for the plastic film cleaning machine comprises a water tank body, a cooling mechanism is arranged on the bottom face of the water tank body and comprises a cooling box, a semiconductor chilling plate is arranged at the bottom end of the interior of the cooling box, one side of the cooling box communicates with a second connecting pipe, and the end, away from the cooling box, of the second connecting pipe communicates with the water tank body; the purifying mechanism comprises a purifying box, first sliding strips and second sliding strips are connected to the two sides of the inner wall of the purifying box, a first filtering assembly is slidably arranged between the pair of first sliding strips, a second filtering assembly is slidably arranged between the pair of second sliding strips, and the back face of the purifying box communicates with a first connecting pipe. The end, away from the purifying box, of the first connecting pipe communicates with the cooling box, a pair of first micro pumps is arranged on one side of the inner wall of the water tank, and the water inlet ends and the water outlet ends of the first micro pumps are connected with a first pipeline and a second pipeline correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a water tank for a plastic film washing machine. Background Art

[0002] Plastic film is a plastic product of a certain thickness, width, and unlimited length, made primarily from synthetic polymers, uniformly mixed with other auxiliary materials in a specific proportion. Plastic film materials primarily include polyethylene, polypropylene, and polyester. Polyethylene, the most common plastic film material, offers excellent tensile strength and abrasion resistance, making it suitable for food packaging, agricultural coverings, and building waterproofing. Polypropylene film, with its excellent high-temperature resistance, is commonly used in microwave food packaging and medical supply packaging. After production, plastic film needs to be cleaned in a plastic film cleaning machine.

[0003] Based on the above, the inventors have found the following problems: In the current production process of plastic film, the plastic film is extruded by a plastic extruder to form a film. The temperature of the film is high during extrusion, and the film needs to be placed in a water tank of a plastic film washing machine for water cooling, and the surface of the plastic film is cleaned by a cleaning roller installed in the water tank. The water tank can only store cleaning water, and it is not convenient to filter and cool the cleaning water after cleaning. When the cleaning water contains more impurities, it will adhere to the plastic film, thereby reducing the cleaning efficiency of the plastic film. At the same time, when the cleaning water in the water tank cools the plastic film, the temperature of the cleaning water in the water tank will continue to rise, which is not convenient for continuing to cool the plastic film.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a water tank for a plastic film washing machine is provided, in order to achieve the purpose of having more practical value. Utility Model Content

[0005] The purpose of the utility model is to provide a water tank for a plastic film washing machine to solve the problems raised in the above background technology.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] The cooling element is connected to the cooling water tank by the cooling fan, and the cooling water tank is cooled by the cooling fan.

[0008] Furthermore, the first filter assembly includes a first fixed frame, in which an activated carbon adsorption bed is provided; the second filter assembly includes a second fixed frame, in which a filter membrane is provided; and the upper end surface of the purification box is provided with a cover plate.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that by setting up a first fixed frame and a second fixed frame, and setting an activated carbon adsorption bed and a filter membrane inside the first fixed frame and the second fixed frame respectively, the water after cleaning the plastic film is filtered and purified through the coordinated use of the activated carbon adsorption bed and the filter membrane for easy recycling. Since the first fixed frame is provided with a first slide groove compatible with the first slide bar on both sides of the outside, and the second fixed frame is provided with a second slide groove compatible with the second slide bar on both sides of the outside, it is convenient to open the cover and take out the first fixed frame and the second fixed frame in the purification box, thereby replacing the first filter assembly and the second filter assembly.

[0010] Furthermore, a plurality of heat dissipation fins are equidistantly provided at the inner bottom of the cooling box, the upper ends of the plurality of heat dissipation fins all pass through the cooling box and are in contact with the hot ends of the semiconductor refrigeration plate, and a pair of heat dissipation fans are embedded in the plurality of heat dissipation fins.

[0011] The beneficial effect of adopting the above further solution is that by setting up heat dissipation fins, the hot end of the semiconductor refrigeration plate is cooled, and at the same time, by starting a pair of heat dissipation fans, the heat dissipation fins are cooled, thereby improving the heat dissipation efficiency of the heat dissipation fins to the semiconductor refrigeration plate.

[0012] Furthermore, a second micro pump is provided on one side of the inner wall of the cooling box, and the water outlet end of the second micro pump is connected to one end of the second connecting pipe. A third micro pump is provided on the inner wall of the cooling box near the first connecting pipe, and the water inlet end of the third micro pump is connected to one end of the first connecting pipe.

[0013] The beneficial effect of adopting the above further scheme is that by setting up a third micro pump, when the third micro pump is started, it is convenient to transport the filtered and purified cleaning water in the purification box to the interior of the cooling box through the first connecting pipe. By setting up a second micro pump, when the second micro pump is started, it is convenient to transport the cooled water in the cooling box to the interior of the water tank through the second connecting pipe.

[0014] Furthermore, a support mechanism is provided at the bottom end of the cooling box, and the support mechanism includes a support frame, the top surface of the support frame is connected to the bottom surface of the cooling box, and support plates are connected to both sides of the bottom end of the support frame.

[0015] The beneficial effect of adopting the above further solution is that the cooling box and water tank are supported as a whole through the coordinated use of the support frame and the support plate. At the same time, the cross-section of the support frame is in the shape of a "U", which makes it easier for the cooling fan to generate airflow to drive the air flow between the cooling fins.

[0016] Furthermore, the upper end surface of the water tank is provided with a downward pressure mechanism, and the downward pressure mechanism includes a door-type frame, the bottom surface of the door-type frame is connected to the top surface of the water tank, and the upper end surface of the door-type frame is provided with a pair of electric telescopic rods, the movable ends of the pair of electric telescopic rods pass through the door-type frame and extend to the interior, and are provided with a cleaning mechanism.

[0017] The beneficial effect of adopting the above further solution is that by setting up a door frame, it is easy to install the electric telescopic rod. When a pair of electric telescopic rods are started, it is easy to move the cleaning mechanism downward, so that the cleaning mechanism is immersed in the water tank.

[0018] Furthermore, the cleaning mechanism includes a square frame, the upper end surface of the square frame is connected to the movable end of a pair of electric telescopic rods, and the front and back sides of the square frame near the bottom end are provided with slide grooves, the interiors of the pair of slide grooves are slidably connected with sliders, and the inner bottom surfaces of the pair of slide grooves are connected with springs, the bottom ends of the pair of sliders are connected to one end of the spring, a movable frame is connected between the pair of sliders, the interior of the door-shaped frame is connected to a fixed frame, and the interiors of the fixed frame and the movable frame are connected to cleaning rollers.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that by setting a slider, when the movable frame is pulled downward, the slider moves downward in the slide groove, and at the same time the slider squeezes the spring, so that there is a gap between the cleaning roller in the fixed frame and the cleaning roller in the movable frame, so that the plastic film can be inserted into the gap later, and then the movable frame is released, so that the movable frame and the slider are reset under the elastic force of the spring, so that the plastic film is clamped between the cleaning roller in the fixed frame and the cleaning roller in the movable frame.

[0020] Furthermore, the slider is in the shape of an I, and the outer wall of the slider near the center is gap-fitted with the inner wall of the slide groove.

[0021] The beneficial effect of adopting the above further solution is that by setting the slider into an "I" shape and the outer wall of the slider near the center is gap-fitted with the inner wall of the slide groove, the slider is prevented from separating from the slide groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the plastic film cleaning machine uses a water tank, and by setting a pair of first micro pumps, when the pair of first micro pumps are started, it is convenient to transport the cleaned water in the water tank to the interior of the purification box through the second pipe, and under the filtering action of the first filter component and the second filter component, the first filter component is composed of a first fixed frame and an activated carbon adsorption bed, and the second filter component is composed of a second fixed frame and a filter membrane, which filters the impurities or suspended matter inside the cleaned water to achieve the purpose of purifying the cleaned water, and then by starting the third micro pump, it is convenient to transport the filtered and purified cleaning water in the purification box through the first connecting pipe to the interior of the cooling box, start the semiconductor refrigeration plate to cool the water in the cooling box, and when the second micro pump is started, it is convenient to transport the cooled water in the cooling box to the interior of the water tank through the second connecting pipe, so as to facilitate the subsequent cooling of the plastic film containing heat when cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a water tank for a plastic film cleaning machine provided by the utility model;

[0024] Figure 2 This is an exploded three-dimensional structural diagram of a cleaning mechanism of a water tank of a plastic film cleaning machine provided by the utility model;

[0025] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of a purification mechanism of a water tank of a plastic film washing machine provided by the utility model;

[0026] Figure 4 This is an exploded three-dimensional structural diagram of a cooling mechanism of a water tank for a plastic film washing machine provided by the utility model;

[0027] Figure 5 The utility model provides a three-dimensional structural diagram of a water tank for a plastic film cleaning machine.

[0028] In the figure: 100, water tank; 200, first micro pump; 300, pressing mechanism; 3001, door frame; 3002, electric telescopic rod; 400, cleaning mechanism; 4001, frame; 4002, slide; 4003, spring; 4004, slider; 4005, movable frame; 4006, fixed frame; 4007, cleaning roller; 500, purification mechanism; 5001, purification box; 5002, first slide; 5003 , second slide bar; 5004, first filter assembly; 5005, second filter assembly; 5006, cover plate; 5007, first connecting pipe; 600, cooling mechanism; 6001, cooling box; 6002, semiconductor refrigeration sheet; 6003, heat dissipation fins; 6004, second micro pump; 6005, third micro pump; 6006, second connecting pipe; 700, supporting mechanism; 7001, supporting frame; 7002, supporting plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 5The utility model provides a technical solution: a water tank for a plastic film washing machine, comprising a water tank 100, a cooling mechanism 600 provided on the bottom surface of the water tank 100, the cooling mechanism 600 comprising a cooling box 6001, the top surface of the cooling box 6001 being connected to the bottom surface of the water tank 100, and a semiconductor refrigeration sheet 6002 provided at the bottom end of the cooling box 6001, a second connecting pipe 6006 being connected to one side of the cooling box 6001, an end of the second connecting pipe 6006 being away from the cooling box 6001 being connected to the water tank 100, and a back surface of the water tank 100 The surface is provided with a purification mechanism 500, which includes a purification box 5001. The front of the purification box 5001 is connected to the back of the water tank 100, and the inner wall of the purification box 5001 is connected to a first slide 5002 and a second slide 5003 on both sides. A first filter component 5004 is slidably provided between the pair of first slides 5002, and a second filter component 5005 is slidably provided between the pair of second slides 5003. The back of the purification box 5001 is connected to a first connecting pipe 5007, and the first connecting pipe 5007 is away from the purification box 5001. One end of the pair of first micro pumps 200 is connected to the cooling box 6001, and one side of the inner wall of the water tank 100 is provided with a pair of first micro pumps 200. The water inlet end and the water outlet end of the pair of first micro pumps 200 are respectively connected to the first pipe and the second pipe. One end of the pair of second pipes away from the first micro pumps 200 passes through the water tank 100 and extends to the interior of the purification box 5001. When the pair of first micro pumps 200 are started, the cleaned water in the water tank 100 is transported to the interior of the purification box 5001 through the second pipe, and the water is filtered out in the first filter assembly 5004 and the second filter assembly 5005. Under the filtering action of component 5005, impurities or suspended matter inside the cleaned water are filtered to achieve the purpose of purifying the cleaned water. The filtered and purified cleaning water is transported to the inside of the cooling box 6001 through the first connecting pipe 5007, and the semiconductor refrigeration plate 6002 is started to cool the water in the cooling box 6001. The cooled water in the cooling box 6001 is transported to the inside of the water tank 100 through the second connecting pipe 6006, so as to cool the plastic film when the plastic film containing heat is subsequently cleaned.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 5The utility model provides a technical solution: the first filter component 5004 includes a first fixed frame, in which an activated carbon adsorption bed is arranged; the second filter component 5005 includes a second fixed frame, in which a filter membrane is arranged; the upper end surface of the purification box 5001 is provided with a cover plate 5006; the inner bottom end of the cooling box 6001 is provided with a plurality of heat dissipation fins 6003 at equal distances; the upper ends of the plurality of heat dissipation fins 6003 all pass through the cooling box 6001 and are all in contact with the hot end of the semiconductor refrigeration plate 6002; and a pair of heat dissipation fans are embedded in the plurality of heat dissipation fins 6003; a second micro pump 6004 is provided on one side of the inner wall of the cooling box 6001; the second micro pump 6006 is provided on the inner wall of the cooling box 6001; and the second micro pump 6006 is provided on the inner wall of the cooling box 6001. The water outlet end of 004 ​​is connected to one end of the second connecting pipe 6006, the inner wall of the cooling box 6001 is provided with a third micro pump 6005 near the first connecting pipe 5007, the water inlet end of the third micro pump 6005 is connected to one end of the first connecting pipe 5007, the bottom end of the cooling box 6001 is provided with a supporting mechanism 700, the supporting mechanism 700 includes a supporting frame 7001, the top surface of the supporting frame 7001 is connected to the bottom surface of the cooling box 6001, and the bottom sides of the supporting frame 7001 are connected with support plates 7002, by setting a first fixed frame and a second fixed frame, and setting an activated carbon adsorption bed and a filter membrane inside the first fixed frame and the second fixed frame respectively, By using the activated carbon adsorption bed and the filter membrane together, the water after cleaning the plastic film is filtered and purified for easy recycling. Since the first fixed frame is provided with a first slide groove adapted to the first slide bar 5002 on both sides of the outside, and the second fixed frame is provided with a second slide groove adapted to the second slide bar 5003 on both sides of the outside, it is convenient to take out the first fixed frame and the second fixed frame in the purification box 5001, so as to replace the first filter component 5004 and the second filter component 5005. By setting the heat dissipation fins 6003, the hot end of the semiconductor refrigeration plate 6002 is cooled, and at the same time, by starting a pair of heat dissipation fans, the heat dissipation fins 6003 are cooled, thereby improving The heat dissipation efficiency of the heat dissipating fins 6003 on the semiconductor refrigeration plate 6002 is improved. The third micro pump 6005 is started to facilitate the transportation of the filtered and purified cleaning water in the purification box 5001 to the inside of the cooling box 6001 through the first connecting pipe 5007. The second micro pump 6004 is started to facilitate the transportation of the cooled water in the cooling box 6001 to the inside of the water tank 100 through the second connecting pipe 6006. The cooling box 6001 and the water tank 100 are supported as a whole through the coordinated use of the support frame 7001 and the support plate 7002. At the same time, the cross section of the support frame 7001 is in the shape of a "U", which facilitates the heat dissipation fan to generate wind flow to drive the air flow between the heat dissipating fins 6003.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 5 The utility model provides a technical solution: the upper end surface of the water tank 100 is provided with a pressing mechanism 300, the pressing mechanism 300 includes a door frame 3001, the bottom surface of the door frame 3001 is connected to the top surface of the water tank 100, and the upper end surface of the door frame 3001 is provided with a pair of electric telescopic rods 3002, the movable ends of the pair of electric telescopic rods 3002 pass through the door frame 3001 and extend to the interior, and are provided with a cleaning mechanism 400, the cleaning mechanism 400 includes a square frame 4001, the upper surface of the square frame 4001 is provided with a pair of electric telescopic rods 3002, the movable ends of the pair of electric telescopic rods 3002 pass through the square ... The end surface is connected to the movable end of a pair of electric telescopic rods 3002, and the front and back of the box 4001 near the bottom are provided with a slide groove 4002, the interior of the pair of slide grooves 4002 are slidably connected with a slider 4004, and the inner bottom surface of the pair of slide grooves 4002 are connected to a spring 4003, the bottom end of the pair of sliders 4004 are connected to one end of the spring 4003, a movable frame 4005 is connected between the pair of sliders 4004, and the interior of the door frame 3001 is connected to a fixed frame 4006 , the interior of the fixed frame 4006 and the movable frame 4005 are both connected with a cleaning roller 4007, the slider 4004 is in the shape of an "I", and the outer wall of the slider 4004 near the center is in a gap with the inner wall of the slide 4002. When the movable frame 4005 is pulled downward, the slider 4004 moves downward in the slide 4002 and squeezes the spring 4003, so that there is a gap between the cleaning roller 4007 in the fixed frame 4006 and the cleaning roller 4007 in the movable frame 4005, so as to facilitate the subsequent The plastic film is then inserted into the gap, and the movable frame 4005 is then released, so that the movable frame 4005 and the slider 4004 are reset under the elastic force of the spring 4003, so that the plastic film is clamped between the cleaning roller 4007 in the fixed frame 4006 and the cleaning roller 4007 in the movable frame 4005, and then a pair of electric telescopic rods 3002 are started to facilitate the downward movement of the cleaning mechanism 400, so that the cleaning mechanism 400 is immersed in the water tank, making it easier to pull one end of the plastic film for cleaning.

[0035] Specifically, the working principle of the water tank of the plastic film cleaning machine is as follows: when in use, when the movable frame 4005 is pulled downward, the slider 4004 moves downward in the slide groove 4002 and squeezes the spring 4003, so that a gap is formed between the cleaning roller 4007 in the fixed frame 4006 and the cleaning roller 4007 in the movable frame 4005, so that the plastic film can be inserted into the gap later. Then, the movable frame 4005 is released, so that the movable frame 4005 and the slider 4004 are reset under the elastic force of the spring 4003, so that the plastic film is clamped between the cleaning roller 4007 in the fixed frame 4006 and the cleaning roller 4007 in the movable frame 4005. The cleaning rollers 4007 are positioned between the cleaning mechanism 400 and the cleaning rollers 4007, and then a pair of electric telescopic rods 3002 are started to facilitate the downward movement of the cleaning mechanism 400, so that the cleaning mechanism 400 is immersed in the water tank, which is convenient for pulling one end of the plastic film to achieve cleaning. When a pair of first micro pumps 200 are started, the cleaned water in the water tank 100 is transported to the interior of the purification box 5001 through the second pipe. By setting a first fixed frame and a second fixed frame, and setting an activated carbon adsorption bed and a filter membrane in the interior of the first fixed frame and the second fixed frame respectively, the water after cleaning the plastic film is filtered and purified by the coordinated use of the activated carbon adsorption bed and the filter membrane. 5005, and the cleaning water in the water tank 100 is prevented from being excessively adhered to the film. Since the first fixed frame is provided with first chutes adapted to the first slide bar 5002 on both sides of the outside, and the second fixed frame is provided with second chutes adapted to the second slide bar 5003 on both sides of the outside, it is convenient to take out the first fixed frame and the second fixed frame in the purification box 5001, so as to replace the first filter assembly 5004 and the second filter assembly 5005, and start the third micro pump 6005 to facilitate the cleaning water filtered and purified in the purification box 5001 to be transported to the cooling water tank 5001 through the first connecting pipe 5007. Inside the box 6001, the semiconductor refrigeration sheet 6002 is started to cool the water in the cooling box 6001, and the heat dissipation fins 6003 are provided to dissipate heat from the hot end of the semiconductor refrigeration sheet 6002. At the same time, a pair of heat dissipation fans are started to dissipate heat from the heat dissipation fins 6003, thereby improving the heat dissipation efficiency of the heat dissipation fins 6003 to the semiconductor refrigeration sheet 6002. The second micro pump 6004 is started to facilitate the transportation of the cooled water in the cooling box 6001 to the inside of the water tank 100 through the second connecting pipe 6006, so as to prevent the temperature of the cleaning water in the water tank 100 from rising due to the temperature of the film.

Claims

1. A water tank for a plastic film cleaning machine, characterized in that: The invention comprises a water tank (100), wherein a cooling mechanism (600) is provided on the bottom surface of the water tank (100), wherein the cooling mechanism (600) comprises a cooling box (6001), wherein the top surface of the cooling box (6001) is connected to the bottom surface of the water tank (100), and a semiconductor refrigeration plate (6002) is provided at the bottom end of the cooling box (6001), and a second connecting pipe (6006) is connected to one side of the cooling box (6001), and the end of the second connecting pipe (6006) away from the cooling box (6001) is connected to the water tank (100), and a purification mechanism (500) is provided on the back side of the water tank (100), wherein the purification mechanism (500) comprises a purification box (5001), wherein the front side of the purification box (5001) is connected to the back side of the water tank (100), and the inner wall of the purification box (5001) is provided on both sides. The sides of the water tank (100) are connected to a first slide bar (5002) and a second slide bar (5003), a first filter assembly (5004) is slidably provided between a pair of the first slide bars (5002), and a second filter assembly (5005) is slidably provided between a pair of the second slide bars (5003), the back of the purification box (5001) is connected to a first connecting pipe (5007), and the end of the first connecting pipe (5007) away from the purification box (5001) is connected to the cooling box (6001), and a pair of first micro pumps (200) are provided on one side of the inner wall of the water tank (100), the water inlet end and the water outlet end of the pair of first micro pumps (200) are respectively connected to a first pipe and a second pipe, and the end of the pair of second pipes away from the first micro pump (200) passes through the water tank (100) and extends to the interior of the purification box (5001).

2. A water tank for a plastic film washing machine according to claim 1, characterized in that: The first filter assembly (5004) includes a first fixed frame, in which an activated carbon adsorption bed is provided. The second filter assembly (5005) includes a second fixed frame, in which a filter membrane is provided. The upper end surface of the purification box (5001) is provided with a cover plate (5006).

3. The water tank for a plastic film washing machine according to claim 2, characterized in that: A plurality of heat dissipation fins (6003) are provided at equal distances on the inner bottom of the cooling box (6001), the upper ends of the plurality of heat dissipation fins (6003) all pass through the cooling box (6001) and are in contact with the hot end of the semiconductor refrigeration plate (6002), and a pair of heat dissipation fans are embedded in the plurality of heat dissipation fins (6003).

4. The water tank for a plastic film washing machine according to claim 3, characterized in that: A second micro pump (6004) is provided on one side of the inner wall of the cooling box (6001), and the water outlet end of the second micro pump (6004) is connected to one end of the second connecting pipe (6006). A third micro pump (6005) is provided on the inner wall of the cooling box (6001) near the first connecting pipe (5007), and the water inlet end of the third micro pump (6005) is connected to one end of the first connecting pipe (5007).

5. The water tank for a plastic film washing machine according to claim 4, characterized in that: A support mechanism (700) is provided at the bottom end of the cooling box (6001), and the support mechanism (700) includes a support frame (7001), the top surface of the support frame (7001) is connected to the bottom surface of the cooling box (6001), and support plates (7002) are connected to both sides of the bottom end of the support frame (7001).

6. The water tank for a plastic film washing machine according to claim 5, characterized in that: The upper end surface of the water tank (100) is provided with a pressing mechanism (300), and the pressing mechanism (300) includes a door-shaped frame (3001), the bottom surface of the door-shaped frame (3001) is connected to the top surface of the water tank (100), and the upper end surface of the door-shaped frame (3001) is provided with a pair of electric telescopic rods (3002), the movable ends of the pair of electric telescopic rods (3002) pass through the door-shaped frame (3001) and extend to the interior, and are provided with a cleaning mechanism (400).

7. The water tank for a plastic film washing machine according to claim 6, characterized in that: The cleaning mechanism (400) comprises a square frame (4001), the upper end surface of the square frame (4001) is connected to the movable ends of a pair of electric telescopic rods (3002), and the front and back surfaces of the square frame (4001) near the bottom are both provided with slide grooves (4002), the interiors of the pair of slide grooves (4002) are both slidably connected with sliders (4004), and the inner bottom surfaces of the pair of slide grooves (4002) are both connected with springs (4003), the bottom ends of the pair of sliders (4004) are both connected to one end of the spring (4003), a movable frame (4005) is connected between the pair of sliders (4004), the interior of the door frame (3001) is connected to a fixed frame (4006), and the interiors of the fixed frame (4006) and the movable frame (4005) are both connected with cleaning rollers (4007).

8. The water tank for a plastic film washing machine according to claim 7, characterized in that: The slider (4004) is in the shape of an "I" character, and the outer wall of the slider (4004) near the center is gap-fitted with the inner wall of the slide groove (4002).

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