Water circulation system of plastic granulator

Abstract

The utility model discloses a water circulation system of a plastic granulator, which comprises at least two granulator tables, and each granulator table comprises a plurality of water inlet pipes and water outlet pipes; and the water treatment pond is connected with a main water collecting pipe and a main water outlet pipe, the main water collecting pipe and the main water outlet pipe both extend to each pelletizer table, the plurality of water inlet pipes of each pelletizer table are communicated with the main water outlet pipe, and the plurality of water outlet pipes are communicated with the main water collecting pipe. According to the system, cooling water of all the pelletizer tables is centralized to the water treatment pond for centralized treatment, the utilization rate of water resources is increased by centralized treatment of the cooling water of the multiple pelletizer tables, unified management and monitoring of the cooling water are facilitated through the centralized treatment mode, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing equipment, in particular to a water circulation system for a plastic granulator. Background Art

[0002] In a plastic granulator production line, cooling water is mainly used to control the temperature of the equipment to ensure stability and product quality during the processing. Traditional cooling water systems are often decentralized, that is, each granulator machine has an independent cooling water circulation system. This method not only wastes water resources but also makes it difficult to effectively manage and treat the cooling water. Content of the Utility Model

[0003] The utility model aims to solve at least one of the problems in the related art to some extent. For this purpose, one of the aims of the utility model is to provide a water circulation system for a plastic granulator, which is used to realize the centralized treatment of cooling water for multiple granulator machines, improve the cooling efficiency and the utilization rate of water resources.

[0004] A water circulation system for a plastic granulator, the water circulation system for a plastic granulator includes:

[0005] At least two granulator machines, each granulator machine includes a plurality of inlet pipes and outlet pipes;

[0006] A water treatment pool, the water treatment pool is connected with a main collecting pipe and a main outlet pipe, the main collecting pipe and the main outlet pipe both extend to each granulator machine, a plurality of the inlet pipes of each granulator machine are all communicated with the main outlet pipe, and a plurality of the outlet pipes are all communicated with the main collecting pipe.

[0007] Further, the number of the water treatment pools is at least two, each water treatment pool is connected with the main collecting pipe and the main outlet pipe, different inlet pipes of each granulator machine are respectively connected with different main outlet pipes, and different outlet pipes are respectively connected with different main collecting pipes.

[0008] Further, at least two of the water treatment pools are arranged at intervals.

[0009] Further, the granulator machine platform includes a machine platform gearbox cooling water tank, a machine platform overall temperature control water tank, a cooling water tank, and a vacuum pump cooling water tank. The machine platform gearbox cooling water tank, the machine platform overall temperature control water tank, the cooling water tank, and the vacuum pump cooling water tank are each connected to the water inlet pipe and the water outlet pipe. The number of water treatment ponds is three, including a first treatment pond, a second treatment pond, and a third treatment pond. The first treatment pond is connected to two of the main collecting water pipes and two of the main outlet water pipes. The second treatment pond and the third treatment pond are each connected to one main collecting water pipe and one main outlet water pipe. The cooling water tank and the machine platform overall temperature control water tank communicate with the first treatment pond. The machine platform gearbox cooling water tank communicates with the second treatment pond. The vacuum pump cooling water tank communicates with the third treatment pond.

[0010] Further, each of the water treatment ponds is provided with a water purification device, a water cooling device, and a circulation pump.

[0011] Further, the water treatment pond is also provided with a filtering device.

[0012] Further, the water treatment pond is also provided with a control component, and the control component is electrically connected to the water purification device, the water cooling device, and the circulation pump.

[0013] Further, the control component includes a controller, a temperature sensor, a pressure sensor, and a flow meter.

[0014] Further, the plastic granulator water circulation system further includes a water house, and at least two of the water treatment ponds are provided in the water house.

[0015] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art: The cooling water of each granulator machine platform is collected into the main collecting water pipe through the water outlet pipe, and then flows into the centralized water treatment pond. The cooling water is purified and cooled in the centralized water treatment pond. After being treated, the cooling water is transported from the centralized water treatment pond to the main outlet water pipe and distributed to each granulator machine platform. The cooling water of each granulator machine platform receives the treated cooling water through the water inlet pipe. By centrally treating the cooling water of multiple granulator machine platforms, the utilization rate of water resources is improved. The centralized treatment method facilitates the unified management and monitoring of the cooling water and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model and used together with the specification to explain the principles of the present utility model.

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] In the drawings:

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the water circulation system of the plastic granulator of the present application;

[0020] Figure 2 It is a schematic structural diagram of the water treatment pool in the water circulation system of the plastic granulator of the present application;

[0021] Figure 3 It is a schematic structural diagram of another embodiment of the water circulation system of the plastic granulator of the present application.

[0022] Reference numerals: 1, a water circulation system of a plastic granulator; 10, a granulator machine platform; 11, an inlet pipe; 12, an outlet pipe; 13, a cooling water tank for the machine platform gearbox; 14, a cooling water tank for the overall temperature control of the machine platform; 15, a cooling water trough; 16, a cooling water tank for the vacuum pump; 30, a water treatment pool; 31, a main collecting pipe; 32, a main outlet pipe; 33, a first treatment pool; 34, a second treatment pool; 35, a third treatment pool; 36, a control component; 361, a controller; 363, a temperature sensor; 365, a pressure sensor. Detailed embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] As Figure 1 - Figure 3 shown, a water circulation system 1 of a plastic granulator provided by the present application includes:

[0026] At least two granulator machine platforms 10, and each granulator machine platform 10 includes a plurality of inlet pipes 11 and outlet pipes 12;

[0027] Water treatment tank 30, the water treatment tank 30 is connected with a main collecting pipe 31 and a main outlet pipe 32. Both the main collecting pipe 31 and the main outlet pipe 32 extend to each granulator machine platform 10. A plurality of inlet pipes 11 of each granulator machine platform 10 are all communicated with the main outlet pipe 32, and a plurality of outlet pipes 12 are all communicated with the main collecting pipe 31.

[0028] At least two granulator machine platforms 10 are equipped in the system. Each granulator machine platform 10 is designed with a plurality of inlet pipes 11 and outlet pipes 12. These pipes are responsible for delivering water to various key parts of the granulator to ensure that the cooling and cleaning requirements during the granulation process are met. The number of inlet pipes 11 and outlet pipes 12 can be adjusted according to the actual production needs to adapt to different scales of production tasks.

[0029] A water treatment tank 30 is set in the system. The water treatment tank 30 is the core part of the entire water circulation system. The water treatment tank 30 is connected with the outlet pipes 12 of each granulator machine platform 10 through a main collecting pipe 31 to ensure that the water discharged from all machine platforms can be collected in the water treatment tank 30 for treatment. In addition, the water treatment tank 30 is also connected with the inlet pipes 11 of each granulator machine platform 10 through a main outlet pipe 32, so that the treated water can be redistributed into the inlet pipes 11 of each machine platform to form a closed circulation system.

[0030] Specifically, a plurality of inlet pipes 11 of each granulator machine platform 10 are all communicated with the main outlet pipe 32, so as to ensure that each machine platform can obtain treated clean water source for cooling and cleaning the plastic particles and used instruments during the granulation process, such as gearbox, extruder barrel, screw, etc. At the same time, a plurality of outlet pipes 12 of each granulator machine platform 10 are also all communicated with the main collecting pipe 31, so that the used water can be collected and transported back to the water treatment tank 30 for further purification treatment.

[0031] Through this design, the system can not only effectively reduce the waste of water resources, improve the utilization rate of water resources, the centralized treatment method is convenient for unified management and monitoring of the cooling water, reduce the maintenance cost, but also improve the working efficiency and production quality of the granulator. In addition, this closed-circuit water treatment method also helps to reduce environmental pollution and meets the environmental protection requirements of modern industrial production.

[0032] The working principle of this water circulation system is as follows: The cooling water of each granulator unit 10 is collected through the outlet pipe 12 into the main collecting pipe 31 and then flows into the water centralized treatment pool; the water enters the water treatment pool 30 for purification and cooling treatment to remove impurities and pollutants and reach the required temperature; the treated cooling water is transported from the water centralized treatment pool to the main outlet pipe 32 through a circulation pump and distributed to each granulator unit 10; the cooling water of each granulator unit 10 receives the treated cooling water through the inlet pipe 11, thus achieving a closed water circulation once.

[0033] Furthermore, in order to further optimize the performance of the water circulation system, this application also designs the following additional components and functions:

[0034] Automation control system: Through sensors installed on the water treatment pool 30 and each granulator unit 10, key parameters such as water temperature, flow rate, pH value, etc. are monitored in real time. These data will be transmitted to the central control unit and analyzed and processed by computer programs. When any parameter is detected to deviate from the set range, the system will automatically adjust the working states of relevant valves and pumps to ensure the stable operation of the water circulation system.

[0035] Multi-stage filtration system: In order to improve the water treatment efficiency, a multi-stage filtration device is set in the water treatment pool 30. The first stage is coarse filtration to remove larger suspended solids and particles; the second stage is fine filtration to remove smaller impurities; the third stage is activated carbon filtration to remove organic substances and odors in the water. Through multi-stage filtration, the cleanliness of the circulating water is ensured and the maintenance cycle of the water treatment pool 30 is extended.

[0036] Heat exchanger: In order to improve the energy utilization efficiency, a heat exchanger is also equipped in the system. The heat exchanger uses the hot water discharged from the granulator unit 10 to preheat the water entering the water treatment pool 30, thereby reducing the energy consumption required for heating. This not only saves energy but also shortens the time for the water temperature in the water treatment pool 30 to reach the ideal state.

[0037] Wastewater treatment and reuse system: In order to further reduce the waste of water resources, a wastewater treatment and reuse device is also designed in the system. For those wastewaters that cannot be directly reused, through a combination of chemical treatment and biological treatment, harmful substances in them are removed to make it meet certain discharge standards, or used for other non-direct contact industrial water demands, such as site cleaning, greening irrigation, etc.

[0038] Regular maintenance reminder function: The system is built with an intelligent maintenance reminder function. According to the running time of the water circulation system and the monitored data, it automatically calculates the optimal maintenance cycle and reminds the operator to carry out necessary maintenance work through text messages, emails or the system interface to ensure the long-term stable operation of the system.

[0039] Through the introduction of these additional components and functions, the plastic granulator water circulation system provided by this application can not only meet the requirements of modern industrial production for environmental protection and efficiency, but also provide a convenient management method for operators to ensure the continuity and stability of the production process.

[0040] Furthermore, the number of water treatment pools 30 is at least two. Each water treatment pool 30 is connected to a main collecting pipe 31 and a main outlet pipe 32. Different inlet pipes 11 of each granulator machine table 10 are respectively connected to different main outlet pipes 32, and different outlet pipes 12 are respectively connected to different main collecting pipes 31.

[0041] In the water treatment system, the number of water treatment pools 30 is at least two to ensure the stable operation of the system and its redundant processing capacity. Each water treatment pool 30 is equipped with a dedicated main collecting pipe 31 and a main outlet pipe 32 for the centralized collection and discharge of treated water. In addition, each granulator machine table 10 is equipped with multiple different inlet pipes 11, which are respectively connected to different main outlet pipes 32 to ensure that each machine table can obtain an appropriate water source according to its specific needs. At the same time, different outlet pipes 12 are also respectively connected to different main collecting pipes 31, so that the water treated by each machine table can be effectively centralized for further treatment or discharge. This design not only improves the flexibility and reliability of the system, but also ensures the efficient utilization of water resources and environmental protection.

[0042] The setting of different water treatment pools 30 enables the separate treatment of different cooling waters of the granulator machine table 10, and this approach has the following remarkable effects:

[0043] Firstly, the setting of different water treatment pools 30 can ensure that each type of cooling water maintains its specific water quality requirements during use. Since different parts of the granulator machine table 10 may have different requirements for the temperature, purity, and chemical composition of the cooling water, an independent water treatment system can be optimized for each part, thereby improving the cooling effect and the operating efficiency of the equipment.

[0044] Secondly, separating the treatment of cooling water can reduce the risk of cross - contamination. Different parts of the cooling water may contain different impurities and chemical substances. If they are mixed and treated together, they may react with each other, resulting in water quality deterioration and even damage to the equipment. By independent treatment, this situation can be effectively avoided, and the service life of the equipment can be extended.

[0045] In addition, the independent water treatment pool 30 can also facilitate the monitoring and maintenance of the cooling water. Each water treatment pool 30 can be equipped with dedicated monitoring equipment to monitor water quality parameters in real - time, detect problems in a timely manner, and take measures. This not only improves the treatment efficiency, but also ensures the stability and safety of the production process.

[0046] Finally, treating the cooling water separately helps to conserve resources and reduce costs. By optimizing the operating parameters of each water treatment tank 30, the consumption of water and chemicals can be reduced, and the energy consumption can be lowered, thereby achieving the dual goals of economic benefits and environmental protection.

[0047] Furthermore, at least two water treatment tanks 30 are spaced apart.

[0048] Setting two or more water treatment tanks 30 can improve the reliability and flexibility of the water treatment system. When one water treatment tank 30 is being maintained or repaired, another water treatment tank 30 can continue to operate, ensuring the continuity and stability of the entire system. This can prevent the situation where the entire system breaks down due to the failure of a single water treatment tank 30.

[0049] Secondly, multiple water treatment tanks 30 can achieve staged treatment and improve the treatment effect. Each water treatment tank 30 can adopt specific treatment processes for different pollutants. For example, the first water treatment tank 30 can perform preliminary filtration and sedimentation, while the second water treatment tank 30 can perform more refined filtration and disinfection. In this way, various pollutants in the water can be removed more effectively, improving the water quality.

[0050] In addition, multiple water treatment tanks 30 can also improve the adaptability and flexibility of the system. Different water treatment tanks 30 can adjust different treatment processes according to the changes in the influent water quality, so as to better cope with various complex water quality situations. For example, in the case of a large water volume or a high pollutant concentration, the treatment load of some water treatment tanks 30 can be increased, or standby water treatment tanks 30 can be activated to ensure the treatment effect.

[0051] Finally, the setting of multiple water treatment tanks 30 can also improve the shock resistance of the system. When the system is suddenly impacted by a large amount of pollutants, multiple water treatment tanks 30 can share the treatment load and prevent a single water treatment tank 30 from failing due to excessive load. This can better protect the stable operation of the entire water treatment system and ensure the stability and safety of the effluent water quality.

[0052] In summary, at least two water treatment tanks 30 are set, and there should be a certain interval between these water treatment tanks 30, which can significantly improve the reliability and flexibility of the water treatment system, achieve staged treatment, improve the treatment effect, enhance the adaptability and shock resistance of the system, thereby ensuring the stability and safety of the effluent water quality.

[0053] Furthermore, the granulator machine platform 10 includes a machine platform gearbox cooling water tank 13, a machine platform overall temperature control water tank 14, a cooling water tank 15, and a vacuum pump cooling water tank 16. The machine platform gearbox cooling water tank 13, the machine platform overall temperature control water tank 14, the cooling water tank 15, and the vacuum pump cooling water tank 16 are respectively connected with a water inlet pipe 11 and a water outlet pipe 12. The number of water treatment pools 30 is three, including a first treatment pool 33, a second treatment pool 34, and a third treatment pool 35. The first treatment pool 33 is connected with two main collecting pipes 31 and two main outlet pipes 32. The second treatment pool 34 and the third treatment pool 35 are respectively connected with a main collecting pipe 31 and a main outlet pipe 32. The cooling water tank 15 and the machine platform overall temperature control water tank 14 communicate with the first treatment pool 33. The machine platform gearbox cooling water tank 13 communicates with the second treatment pool 34. The vacuum pump cooling water tank 16 communicates with the third treatment pool 35.

[0054] In these water treatment pools 30, the cooling water tank 15 and the machine platform overall temperature control water tank 14 are both connected and communicate with the first treatment pool 33, which means they share the same water treatment system. The machine platform gearbox cooling water tank 13 is connected and communicates with the second treatment pool 34 to ensure that the cooling water in the gearbox part can be effectively treated and recycled. Finally, the vacuum pump cooling water tank 16 is connected and communicates with the third treatment pool 35, enabling the cooling water in the vacuum pump part to also be properly treated and recycled. By connecting the cooling water tank 15, the machine platform overall temperature control water tank 14, the machine platform gearbox cooling water tank 13, and the vacuum pump cooling water tank 16 to different treatment pools respectively, efficient circulation and treatment of the cooling water can be achieved, thereby ensuring that the temperature of each part during the operation of the granulator machine platform 10 is effectively controlled. Secondly, by setting up three independent treatment pools, the cooling water for different parts can be specially treated, improving the usage efficiency and water quality of the cooling water and extending the service life of the cooling system. In addition, this design can also reduce the waste of cooling water, lower the production cost, and improve the operation efficiency and economic benefits of the entire granulator machine platform 10.

[0055] Furthermore, each water treatment pool 30 is provided with a water purification device, a water cooling device, and a circulation pump. In each water treatment pool 30, dedicated water purification devices, water cooling devices, and circulation pumps are equipped. The setting of these devices aims to ensure the cleanliness of the water quality and an appropriate temperature, while maintaining the circulating flow of the water to achieve the best water treatment effect.

[0056] The function of the water purification device is to remove impurities, harmful substances, and microorganisms in the water to ensure that the water quality meets the standards. It usually includes various technical means such as filters, activated carbon adsorption devices, and ultraviolet disinfection systems to comprehensively purify the water quality.

[0057] The water cooling device is responsible for regulating the water temperature to keep it within a relatively stable range. This is very important for certain industrial applications or specific occasions because too high or too low water temperature may affect the normal operation of equipment or the quality of products. The water cooling device usually uses equipment such as cooling towers and heat exchangers to achieve water temperature regulation.

[0058] The function of the circulation pump is to push the water to continuously circulate in the system. Through the continuous operation of the circulation pump, the water in the water treatment pool 30 can be evenly mixed, improving the purification and cooling effects, while preventing dead zones in the water body and avoiding water quality deterioration.

[0059] Furthermore, the water treatment pool 30 is also provided with a filtering device.

[0060] The filtering device can effectively remove suspended particulate matter in the water, ensuring the clarity and transparency of the water quality. Secondly, it can intercept and remove harmful microorganisms and bacteria in the water, thus improving the hygiene standard of the water quality. In addition, the filtering device can also adsorb and remove some organic substances and heavy metal ions in the water, further enhancing the safety and purity of the water quality.

[0061] Furthermore, the water treatment pool 30 is also provided with a control component 36, and the control component 36 is electrically connected to the water purification device, the water cooling device and the circulation pump. What is the effect

[0062] The water treatment pool 30 is equipped with advanced control components 36, and these control components 36 are closely connected to the water purification device, the water cooling device and the circulation pump through electrical connections. Such a design enables the entire water treatment system to operate efficiently and precisely. The control component 36 can monitor and adjust the water quality parameters in the water treatment pool 30 in real time to ensure that the water quality reaches the predetermined standard. At the same time, it can automatically adjust the working state of the water purification device according to actual needs, optimize the operating efficiency of the water cooling device, and control the flow rate and pressure of the circulation pump, so as to achieve the best water treatment effect. Through this intelligent control method, not only can the water treatment efficiency be improved, but also the energy consumption can be saved, ensuring the stability and reliability of the entire system.

[0063] Furthermore, the control component 36 includes a controller 361, a temperature sensor 363, a pressure sensor 365 and a flow meter.

[0064] The controller 361 is the core of the entire control component 36, responsible for receiving data from each sensor and processing it according to preset programs and algorithms. The controller 361 can adjust the operating parameters of the system in real time to ensure that the equipment operates in the best state.

[0065] The temperature sensor 363 is used to monitor the temperature change of the system. By providing real-time feedback of the temperature data, the controller 361 can timely adjust the power of the heating or cooling equipment to maintain the system within the set temperature range. This can effectively prevent the equipment from overheating or overcooling and ensure the stability and safety of the system.

[0066] The pressure sensor 365 is used to monitor the pressure change of the system. By providing real-time feedback of the pressure data, the controller 361 can timely adjust the opening of the pump or valve to maintain the system within the set pressure range. This can effectively prevent the system pressure from being too high or too low and avoid equipment damage or performance degradation.

[0067] The flow meter is used to monitor the flow change of the system. By providing real-time feedback of the flow data, the controller 361 can timely adjust the rotational speed of the pump or the opening of the valve to maintain the system within the set flow range. This can effectively prevent the flow from being too large or too small and ensure the efficient operation of the system.

[0068] In summary, by integrating the functions of the controller 361, temperature sensor 363, pressure sensor 365, and flow meter, the control component 36 can achieve comprehensive monitoring and precise control of the system. This comprehensive control method can significantly improve the operating efficiency of the equipment, extend the service life of the equipment, and ensure the safety and reliability of the system.

[0069] Furthermore, the water circulation system of the plastic granulator also includes a water room, and at least two water treatment tanks 30 are arranged in the water room.

[0070] The water room can separate the water treatment tank 30 from the granulator machine platform 10, forming two independent treatment systems. Since the water treatment tank 30 and the granulator machine platform 10 are separated, each system can operate independently without interference, thus ensuring that each link can work in the best state. Secondly, this separation design helps to improve the safety performance of the system. By separating the water treatment tank 30 and the granulator machine platform 10, it can effectively avoid potential water pollution or other safety hazards that may occur during the production process, thus ensuring the safety and reliability of the entire production process. Finally, this design also has environmental significance. Through an independent water treatment system, the wastewater can be more effectively treated and recycled, reducing environmental pollution and achieving a sustainable production mode.

[0071] It can be understood that the above embodiments only represent the preferred embodiments of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present utility model shall fall within the scope covered by the claims of the present utility model.

Claims

1. A water circulation system for a plastic granulator, characterized in that, Comprising: At least two granulator units, each of the granulator units comprising a plurality of water inlet pipes and water outlet pipes; A water treatment tank, the water treatment tank being connected with a main collecting water pipe and a main outlet water pipe, both the main collecting water pipe and the main outlet water pipe extending to each of the granulator units, a plurality of the water inlet pipes of each of the granulator units being communicated with the main outlet water pipe, and a plurality of the water outlet pipes being communicated with the main collecting water pipe.

2. The water circulation system of a plastic granulator according to claim 1, wherein, The number of the water treatment tanks is at least two, each of the water treatment tanks being connected with the main collecting water pipe and the main outlet water pipe, different water inlet pipes of each of the granulator units being respectively connected with different main outlet water pipes, and different water outlet pipes being respectively connected with different main collecting water pipes.

3. The water circulation system of a plastic granulator according to claim 2, characterized in that, At least two of the water treatment tanks are arranged at intervals.

4. The water circulation system of a plastic granulator according to claim 3, characterized in that, The granulator unit comprises a machine platform gearbox cooling water tank, a machine platform overall temperature control water tank, a cooling water tank and a vacuum pump cooling water tank, the machine platform gearbox cooling water tank, the machine platform overall temperature control water tank, the cooling water tank and the vacuum pump cooling water tank are respectively connected with the water inlet pipe and the water outlet pipe, the number of the water treatment tanks is three, including a first treatment tank, a second treatment tank and a third treatment tank, the first treatment tank is connected with two main collecting water pipes and two main outlet water pipes, the second treatment tank and the third treatment tank are respectively connected with one main collecting water pipe and one main outlet water pipe, the cooling water tank and the machine platform overall temperature control water tank are communicated with the first treatment tank, the machine platform gearbox cooling water tank is communicated with the second treatment tank, and the vacuum pump cooling water tank is communicated with the third treatment tank.

5. A water circulation system for a plastic granulator according to any one of claims 2 to 4, characterized in that, Each of the water treatment tanks is provided with a water purification device, a water cooling device and a circulation pump.

6. The water circulation system of a plastic granulator according to claim 5, characterized in that, The water treatment tank is further provided with a filtering device.

7. The water circulation system of a plastic granulator according to claim 6, characterized in that, The water treatment tank is further provided with a control component, the control component being electrically connected with the water purification device, the water cooling device and the circulation pump.

8. The water circulation system of a plastic granulator according to claim 7, characterized in that, The control component comprises a controller, a temperature sensor, a pressure sensor and a flowmeter.

9. A water circulation system for a plastic granulator according to any one of claims 2 to 4, characterized in that, The plastic granulator water circulation system further comprises a water room, and at least two of the water treatment tanks are arranged in the water room.

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