A hot wash pot for PET plastics

Abstract

The utility model discloses a kind of hot washing pots of PET plastics, including kettle body, circulating pump, circulating pipeline and support, kettle body is respectively connected with support and circulating pipeline fixedly, circulating pump is fixedly connected with support, and circulating pump is equipped with detachable filter device between circulating pipeline, support is equipped with water replenishing device and wastewater treatment device, the detachable filter device includes filter bin, filter screen, sealing plate, connecting plate and locking device, filter bin is respectively fixedly connected with circulating pipeline and circulating pump, sealing plate is respectively fixedly connected with connecting plate and filter screen, filter screen is movably connected with filter bin, the wastewater treatment device includes processing box, activated carbon screen, light oxygen pipe, filter head and processing pipe, processing pipe is equipped with filter head, activated carbon screen and light oxygen pipe are fixedly connected with processing box, the utility model solves the problem of traditional PET plastics's hot washing pot in filter device dismounting convenience, reaction liquid replenishing convenience and wastewater treatment recovery.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for PET plastics, and more specifically, it relates to a hot washing pot for PET plastics. Background Technology

[0002] PET plastic refers to polyterephthalic acid plastics, mainly including polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). Polyethylene terephthalate, also known as polyester resin, is a condensation polymer of terephthalic acid and ethylene glycol. Together with PBT, it is collectively referred to as thermoplastic polyester or saturated polyester. During the processing of PET plastic, certain stains are generated, which can easily cause dirt to accumulate in the inner cavity of the processing machine and is difficult to clean. At the same time, due to its poor crushing efficiency, it can easily lead to blockage of the conveying pipes. For these reasons, environmentally friendly hot washing pots made of PET plastic were developed. However, traditional environmentally friendly hot washing pots made of PET plastic still have some drawbacks that affect daily use.

[0003] The primary problem is that the filter device of traditional PET plastic environmentally friendly hot washing pots cannot be disassembled. One of the core advantages of environmentally friendly hot washing pots is to reduce water consumption through water circulation. However, the non-removable filter device will significantly increase cleaning costs. To remove impurities from the filter screen surface, a large amount of clean water needs to be used for rinsing, which violates the original intention of environmental protection and water conservation. Filter screen blockage will increase the load on the circulating water pump, and the pump and other components are prone to burnout due to long-term overload operation. Long-term accumulation of impurities will form a hard scale layer on the filter screen surface. Especially in high-temperature environments, oil and impurities will combine and solidify into hard blocks that are difficult to remove, eventually completely blocking the filter channel, causing the circulating water circuit to be interrupted, and the hot washing pot to be forced to shut down.

[0004] More notably, traditional environmentally friendly hot water washing machines for PET plastics lack a water replenishment device. The core cleaning logic of hot water washing machines relies on the synergy of high temperature, water flow, and detergent action. Water level is the foundation for ensuring this synergistic effect. During the washing process, water evaporates due to high temperature. If there is no automatic water replenishment device, the water level will gradually decrease, causing some PET raw materials to be exposed above the water surface and unable to come into contact with hot water and detergent, creating cleaning dead zones. When manually replenishing water, the sudden injection of cold water will cause a sharp drop in water temperature, disrupting the activity balance of the detergent. At the same time, the alternation of hot and cold water will also cause stress damage to the PET raw materials due to thermal expansion and contraction, affecting their mechanical properties.

[0005] Crucially, traditional PET plastic environmentally friendly hot water washing machines lack wastewater treatment devices. The washing process consumes a large amount of hot water, and the wastewater is not entirely unusable. Without wastewater recycling devices, this potentially reusable wastewater is directly discharged, increasing the fresh water consumption per unit of PET raw material. Residual detergents in the wastewater can damage aquatic ecosystems after entering water bodies. The lack of wastewater treatment devices significantly increases the long-term operating costs of hot water washing machines. Equipping them with wastewater treatment devices allows for the recycling of some water, directly reducing fresh water consumption by about half and significantly saving on water costs. Direct discharge of wastewater requires compliance with wastewater discharge standards, incurring additional wastewater treatment fees. If wastewater pollutants exceed standards, fines may be imposed, further increasing the economic burden. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a PET plastic hot washing pot to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a PET plastic hot washing pot, comprising a pot body, a circulating pump, a circulating pipe, and a support. The pot body is fixedly connected to the support and the circulating pipe, and the circulating pump is fixedly connected to the support. A detachable filter device is provided between the circulating pump and the circulating pipe. The support is provided with a water replenishment device and a wastewater treatment device. The detachable filter device includes a filter chamber, a filter screen, a sealing plate, a connecting plate, and a locking device. The filter chamber is fixedly connected to the circulating pipe and the circulating pump, the sealing plate is fixedly connected to the connecting plate and the filter screen, the filter screen is movably connected to the filter chamber, and the locking device is fixedly connected to the filter chamber and movably connected to the connecting plate. The wastewater treatment device includes a treatment tank, an activated carbon mesh, a photo-oxidation tube, a filter head, and a treatment pipe. The treatment pipe is fixedly connected to the pot body and the treatment tank, and the treatment pipe is provided with a filter head. The activated carbon mesh and the photo-oxidation tube are both fixedly connected to the treatment tank.

[0010] The present invention is further configured such that the water replenishment device includes a water replenishment tank, a water pump, a heating tube, a water level sensor, and a water replenishment pipe. The water replenishment tank and the water pump are both fixedly connected to the bracket. The water replenishment pipe is fixedly connected to the water pump, the water replenishment tank, or the pot body, respectively. The heating tube is fixedly connected to the water replenishment tank, and the water level sensor is fixedly connected to the pot body.

[0011] The present invention is further configured such that the pot body is provided with a stirring motor, stirring blades, a first valve and a second valve, the stirring motor is fixedly connected to the pot body and the stirring blades respectively, the first valve is fixedly connected to the pot body and the circulation pipe respectively, and the second valve is fixedly connected to the pot body and the processing pipe respectively.

[0012] The present invention is further configured such that the connecting plate is provided with a locking block, the locking block being movably connected to the locking device, thereby improving the stability of the filtration.

[0013] The present invention is further configured such that the locking device includes a fixed base, a locking handle and a locking hook, the fixed base is fixedly connected to the filter chamber and rotatably connected to the locking handle, and the locking hook is rotatably connected to the locking handle and movably connected to the locking block, thereby improving the stability of filtration.

[0014] The present invention is further configured such that a temperature sensor is provided in the water replenishment tank, thereby reducing the temperature difference between the replenishment water and the water used for cleaning.

[0015] The present invention is further provided with a shock-absorbing pad at the bottom of the bracket, which improves the service life of the overall equipment.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a PET plastic hot washing pot, which has the following beneficial effects:

[0018] 1. A complete, easily disassembled filter device is formed by the tight fit between the filter chamber, filter screen, sealing plate, connecting plate, locking block, fixing seat, locking handle, and locking hook. The movement of the locking handle around the fixing seat causes the locking hook to press and release against the locking block, making it easier to fix or remove the filter screen. Operators can complete disassembly in a short time and directly remove the filter screen assembly to thoroughly clean the intercepted PET label fragments, mud, oil, and other impurities, preventing impurities from solidifying into scale on the filter screen surface. Timely cleaning of the filter screen can prevent impurities from entering precision components such as the circulating water pump and spray arms, reducing the frequency of pipe blockage and extending the service life of the equipment.

[0019] 2. A complete water replenishment device is formed by the close cooperation between the water tank, water pump, heating element, water level sensor, and water replenishment pipe. During the hot washing process, the water will decrease due to high-temperature evaporation and adsorption by PET raw materials. The water level sensor detects the water level in the pot to ensure that the water level in the pot is not too low and thus the cleaning is not incomplete. It ensures that the PET raw materials are always completely immersed in hot water, avoiding the formation of cleaning dead corners due to partial exposure of raw materials. The temperature sensor and heating element work together to ensure that the temperature difference between the water replenished to the pot and the water in the pot is not too large, avoiding the sudden drop in water temperature caused by manually adding cold water, and ensuring that the detergent works in the optimal activity range.

[0020] 3. Through the close cooperation between the treatment box, activated carbon mesh, photo-oxidation tube, filter head, and treatment pipe, a complete wastewater treatment device is formed. The primary filtration of the filter head and the activated carbon adsorption module remove residual detergents from the wastewater. After disinfection treatment by the photo-oxidation tube, the water meets the discharge standards, preventing damage to the ecosystem after discharge. The treated water can also be recycled, reducing the daily consumption of fresh water and saving input costs. This gives the hot water washing equipment both economic and environmental benefits. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a PET plastic hot washing pot according to this utility model;

[0022] Figure 2 This is a cross-sectional view of the overall structure of a PET plastic hot washing pot according to this utility model;

[0023] Figure 3 This is a schematic diagram of the easily disassembled filter device in this utility model;

[0024] Figure 4 This is a schematic diagram of the locking device structure in this utility model;

[0025] Figure 5 This is a cross-sectional view of the water replenishment tank and the treatment tank in this utility model.

[0026] In the diagram: 1. Pot body; 2. Circulation pump; 3. Circulation pipe; 4. Support; 5. Filter chamber; 6. Filter screen; 7. Sealing plate; 8. Connecting plate; 9. Treatment box; 10. Activated carbon mesh; 11. Photo-oxidation tube; 12. Filter head; 13. Treatment pipe; 14. Water supply tank; 15. Water pump; 16. Heating tube; 17. Water level sensor; 18. Water supply pipe; 19. Stirring motor; 20. Stirring blades; 21. First valve; 22. Second valve; 23. Locking block; 24. Fixing base; 25. Locking handle; 26. Locking hook; 27. Temperature sensor; 28. Shock-absorbing pad. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A PET plastic hot washing pot includes a pot body 1, a circulating pump 2, a circulating pipe 3, and a support 4. The pot body 1 is fixedly connected to the support 4 and the circulating pipe 3. The circulating pump 2 is fixedly connected to the support 4. A removable filter device is provided between the circulating pump 2 and the circulating pipe 3. The support 4 is provided with a water replenishment device and a wastewater treatment device. The removable filter device includes a filter chamber 5, a filter screen 6, a sealing plate 7, a connecting plate 8, and a locking device. The filter chamber 5 is fixedly connected to the circulating pipe 3 and the circulating pump 2. The sealing plate 7 is fixedly connected to the connecting plate 8 and the filter screen 6. The filter screen 6 is movably connected to the filter chamber 5. The locking device is fixedly connected to the filter chamber 5 and movably connected to the connecting plate 8. The wastewater treatment device includes a treatment tank 9, an activated carbon mesh 10, a photo-oxidation tube 11, a filter head 12, and a treatment pipe 13. The treatment pipe 13 is fixedly connected to the pot body 1 and the treatment tank 9. The treatment pipe 13 is provided with a filter head 12. The activated carbon mesh 10 and the photo-oxidation tube 11 are both fixedly connected to the treatment tank 9.

[0031] In a further embodiment of this application, the water replenishment device includes a water replenishment tank 14, a water pump 15, a heating element 16, a water level sensor 17, and a water replenishment pipe 18. The water replenishment tank 14 and the water pump 15 are both fixedly connected to the bracket 4. The water replenishment pipe 18 is fixedly connected to the water pump 15, the water replenishment tank 14, or the pot body 1, respectively. The heating element 16 is fixedly connected to the water replenishment tank 14, and the water level sensor 17 is fixedly connected to the pot body 1.

[0032] In a further embodiment of this application, the pot body 1 is provided with a stirring motor 19, stirring blades 20, a first valve 21 and a second valve 22. The stirring motor 19 is fixedly connected to the pot body 1 and the stirring blades 20 respectively. The first valve 21 is fixedly connected to the pot body 1 and the circulation pipe 3 respectively. The second valve 22 is fixedly connected to the pot body 1 and the processing pipe 13 respectively.

[0033] In a further embodiment of this application, the connecting plate 8 is provided with a locking block 23, which is movably connected to the locking device. The locking device includes a fixed base 24, a locking handle 25, and a locking hook 26. The fixed base 24 is fixedly connected to the filter chamber 5 and rotatably connected to the locking handle 25. The locking hook 26 is rotatably connected to the locking handle 25 and movably connected to the locking block 23. By lifting the locking handle 25 upward, the locking handle 25 rotates around the fixed base 24, causing the locking hook 26 to rotate around the locking handle 25 and move upward to leave the locking block 23, thereby removing the filter screen 6 from the filter chamber 5.

[0034] In a further embodiment of this application, a temperature sensor 27 is provided in the water replenishment tank 14. The temperature sensor 27 detects the temperature of the water in the water replenishment tank 14. When the water temperature is too low, the temperature sensor 27 will turn on the heating tube 16 to heat the water. After heating to a certain temperature, the heating tube 16 will be turned off so that the temperature of the water replenished to the pot body 1 is basically the same as the temperature of the original liquid in the pot body 1.

[0035] In a further embodiment of this application, the bottom of the bracket 4 is provided with a shock-absorbing pad 28, which can effectively reduce the impact of the equipment on the ground and the noise generated by the impact.

[0036] In this embodiment, when the device is needed, the cleaning agent and PET plastic are poured into the cylinder 1 and the stirring motor 19 is started to make the stirring blades 20 rotate to stir and clean the PET plastic. The first valve 21 and the circulation pump 2 are opened so that the cleaning liquid in the pot 1 is filtered through the filter screen 6 of the circulation pipe 3 and returned to the pot 1 for liquid circulation cleaning. After the liquid in the pot 1 has been working for a certain period of time, some of it will evaporate. When the water level sensor 17 detects that the water level in the pot 1 has decreased too much, it will turn on the water pump 15 to replenish the water in the water tank 14 into the pot 1 through the water replenishment pipe 18. The temperature sensor 27 will detect the temperature of the water in the water tank 14. When the water temperature is too low, the temperature sensor 27 will turn on the heating tube 16 to heat the water. After heating to a certain temperature, the heating tube 16 will be turned off so that the temperature of the water replenished into the pot 1 is basically the same as the temperature of the original liquid in the pot 1.

[0037] More specifically, when the wastewater needs to be treated after cleaning, the second valve 22 is opened to allow the wastewater to pass through the treatment pipe 13, be filtered by the filter head 12, and then enter the treatment tank 9. The wastewater entering the treatment tank 9 is treated by the adsorption of the activated carbon mesh 10 and the disinfection by the irradiation of the photo-oxidation tube 11. The treated water can be discharged or reused. When the filter screen 6 needs to be disassembled and cleaned, the locking handle 25 is lifted upward to rotate around the fixed seat 24, so that the locking hook 26 rotates around the locking handle 25 and moves upward to leave the locking block 23. Then, the locking block 23 on the connecting plate 8 is lifted to remove the filter screen 6 from the filter chamber 5 for cleaning. The sealing plate 7 prevents the filtered liquid from leaking out when the filter screen 6 is locked. The shock-absorbing pad 28 of the bracket 4 can effectively reduce the impact of the equipment on the ground and the noise generated by the impact.

[0038] In summary, during the use or operation of the overall equipment: the cleaning agent and PET plastic are poured into the cylinder 1 and the stirring motor 19 is started to make the stirring blades 20 rotate to stir and clean the PET plastic. The first valve 21 and the circulation pump 2 are opened so that the cleaning liquid in the pot 1 is filtered through the filter screen 6 of the circulation pipe 3 and returned to the pot 1 for liquid circulation cleaning. After working for a certain period of time, some of the liquid in the pot 1 will evaporate. When the water level sensor 17 detects that the water level in the pot 1 has decreased too much, it will turn on the water pump 15 to replenish the water in the water tank 14 into the pot 1 through the water replenishment pipe 18. The temperature sensor 27 will detect the temperature of the water in the water tank 14. When the water temperature is too low, the temperature sensor 27 will turn on the heating tube 16 to heat the water. After heating to a certain temperature, the heating tube 16 will be turned off so that the temperature of the water replenished into the pot 1 is basically the same as the temperature of the original liquid in the pot 1.

[0039] More specifically, when the wastewater needs to be treated after cleaning, the second valve 22 is opened to allow the wastewater to pass through the treatment pipe 13, be filtered by the filter head 12, and then enter the treatment tank 9. The wastewater entering the treatment tank 9 is treated by the adsorption of the activated carbon mesh 10 and the disinfection by the irradiation of the photo-oxidation tube 11. The treated water can be discharged or reused. When the filter screen 6 needs to be disassembled and cleaned, the locking handle 25 is lifted upward to rotate around the fixed seat 24, so that the locking hook 26 rotates around the locking handle 25 and moves upward to leave the locking block 23. Then, the locking block 23 on the connecting plate 8 is lifted to remove the filter screen 6 from the filter chamber 5 for cleaning. The sealing plate 7 prevents the filtered liquid from leaking out when the filter screen 6 is locked. The shock-absorbing pad 28 of the bracket 4 can effectively reduce the impact of the equipment on the ground and the noise generated by the impact.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PET plastic hot washing pot, comprising a pot body (1), a circulation pump (2), a circulation pipe (3), and a support (4), characterized in that: The pot body (1) is fixedly connected to the support (4) and the circulation pipe (3) respectively. The circulation pump (2) is fixedly connected to the support (4). A removable filter device is provided between the circulation pump (2) and the circulation pipe (3). The support (4) is provided with a water replenishment device and a wastewater treatment device. The removable filter device includes a filter chamber (5), a filter screen (6), a sealing plate (7), a connecting plate (8), and a locking device. The filter chamber (5) is fixedly connected to the circulation pipe (3) and the circulation pump (2) respectively. The sealing plate (7) is fixedly connected to the connecting plate (8) and the filter screen (6). The filter screen (6) is fixedly connected to the filter chamber (5), the locking device is fixedly connected to the filter chamber (5) and is movably connected to the connecting plate (8). The wastewater treatment device includes a treatment box (9), an activated carbon screen (10), a photo-oxidation tube (11), a filter head (12) and a treatment pipe (13). The treatment pipe (13) is fixedly connected to the pot body (1) and the treatment box (9) respectively. The treatment pipe (13) is equipped with a filter head (12). The activated carbon screen (10) and the photo-oxidation tube (11) are both fixedly connected to the treatment box (9).

2. The PET plastic hot washing pot according to claim 1, characterized in that: The water replenishment device includes a water replenishment tank (14), a water pump (15), a heating pipe (16), a water level sensor (17), and a water replenishment pipe (18). The water replenishment tank (14) and the water pump (15) are both fixedly connected to the bracket (4). The water replenishment pipe (18) is fixedly connected to the water pump (15), the water replenishment tank (14), or the pot body (1) respectively. The heating pipe (16) is fixedly connected to the water replenishment tank (14), and the water level sensor (17) is fixedly connected to the pot body (1).

3. A PET plastic hot washing pot according to claim 1, characterized in that: The pot body (1) is equipped with a stirring motor (19), stirring blades (20), a first valve (21) and a second valve (22). The stirring motor (19) is fixedly connected to the pot body (1) and the stirring blades (20) respectively. The first valve (21) is fixedly connected to the pot body (1) and the circulation pipe (3) respectively. The second valve (22) is fixedly connected to the pot body (1) and the processing pipe (13) respectively.

4. A PET plastic hot washing tank according to claim 1, characterized in that: The connecting plate (8) is provided with a locking block (23), which is movably connected to the locking device.

5. A PET plastic hot washing pot according to claim 4, characterized in that: The locking device includes a fixed base (24), a locking handle (25) and a locking hook (26). The fixed base (24) is fixedly connected to the filter chamber (5) and rotatably connected to the locking handle (25). The locking hook (26) is rotatably connected to the locking handle (25) and movably connected to the locking block (23).

6. A PET plastic hot washing pot according to claim 2, characterized in that: The water supply tank (14) is equipped with a temperature sensor (27).

7. A PET plastic hot washing pot according to claim 1, characterized in that: The bottom of the bracket (4) is provided with a shock-absorbing pad (28).

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