Water circulation treatment device applied to battery cleaning machine

Abstract

The utility model relates to water treatment field, concretely is a kind of water circulation treatment device applied to battery cleaning machine, and the cleaning wastewater of cleaning machine system is injected into raw water tank, along wastewater flow direction, raw water tank, the pretreatment system for filtering wastewater, ultrafiltration system, RO system, pure water tank and cleaning machine system are sequentially communicated to constitute wastewater circulation, still include dosing device, and dosing port of dosing device is simultaneously communicated with the inlet of ultrafiltration system and RO system;Emergency override pipe is also provided between pretreatment system and ultrafiltration system, and emergency override pipe is communicated with pretreatment system and RO system, and emergency override pipe and ultrafiltration system are alternatively used.The utility model has realized the repeated cyclic utilization of battery cleaning machine wastewater.

Description

Technical Field

[0001] This utility model relates to the field of water treatment, specifically a water circulation treatment device applied to a battery cleaning machine. Background Technology

[0002] Against the backdrop of the rapid development of the new energy battery industry, the demand for pure water in the cleaning process of battery production has increased dramatically. Battery cleaning machines, as key equipment, are mainly used to remove residual electrolyte, colloids, dust, and other contaminants from the surfaces of freshly manufactured batteries and battery frames. This equipment relies on high-purity deionized water supplied from the factory for cleaning. However, during continuous operation, contaminants such as metal ions, organic matter, and particulate matter in the water accumulate as cleaning progresses, until the conductivity and pH value gradually exceed the allowable range of the process. At this point, the machine must be shut down, wastewater discharged, and pure water replenished.

[0003] However, battery cleaning machines require frequent replacement of pure water, resulting in huge consumption of pure water in the factory, high operating costs, and serious waste of water resources. In addition, the wastewater discharged from battery cleaning machines needs to be filtered and pH adjusted before being discharged into the factory's sewage treatment plant. However, due to the expansion of new energy battery production capacity, the amount of wastewater often exceeds the treatment capacity of the sewage treatment plant, putting great pressure on wastewater treatment. At present, the single-use water model of battery cleaning machines lacks efficient wastewater reuse technology and cannot achieve closed-loop utilization of water resources. Therefore, it is urgent to solve this problem. Utility Model Content

[0004] To avoid and overcome the technical problems existing in the prior art, this utility model provides a water circulation treatment device for battery cleaning machines. This utility model realizes the repeated recycling of wastewater from battery cleaning machines.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A water circulation treatment device for a battery cleaning machine is disclosed. The cleaning wastewater from the cleaning machine system is injected into a raw water tank. Along the wastewater flow direction, the raw water tank, a pretreatment system for filtering wastewater, an ultrafiltration system, an RO system, a pure water tank, and the cleaning machine system are sequentially connected to form a wastewater circulation system. The device also includes a dosing device, whose dosing port is simultaneously connected to the inlets of both the ultrafiltration and RO systems. An emergency bypass pipe is also installed between the pretreatment system and the ultrafiltration system, connecting both systems. Either the emergency bypass pipe or the ultrafiltration system can be selectively activated.

[0007] As a further embodiment of this utility model: the pretreatment system includes a quartz sand filter and an activated carbon filter arranged sequentially along the wastewater flow direction, and a security filter is provided between the activated carbon filter and the ultrafiltration system.

[0008] As a further embodiment of this utility model: the ultrafiltration system includes an ultrafilter, an ultrafiltration water tank, and a booster pump arranged sequentially along the wastewater flow direction. A security filter is installed at the outlet of the booster pump, and the dosing port of the dosing device is connected to both the outlet of the activated carbon filter and the outlet of the booster pump.

[0009] As a further improvement of this utility model: the outlet of the booster pump is connected to the activated carbon filter through a reflux bypass pipe to achieve reflux ultrafiltration.

[0010] As a further embodiment of this utility model: the RO system includes a high-pressure pump and a reverse osmosis membrane device arranged sequentially along the wastewater flow direction, and the wastewater permeated from the reverse osmosis membrane device is discharged to the sewage network through a sewage pipe.

[0011] As a further improvement of this utility model, the purified water outlet of the reverse osmosis membrane device is connected to the inlet of the high-pressure pump through a permeate return pipe, thereby establishing a return pipeline for recirculating reverse osmosis wastewater.

[0012] As a further improvement of this utility model: the inlet of the emergency bypass tube is connected in parallel with the inlet of the ultrafiltration unit and one of them can be used selectively; the outlet of the emergency bypass tube is connected to the inlet of the high-pressure pump in the RO system.

[0013] As a further embodiment of this utility model: the cleaning machine system includes a cleaning machine and a cleaning machine water tank. The wastewater after cleaning by the cleaning machine is discharged into the cleaning machine water tank. The cleaning machine water tank is connected to the original water tank. The cleaning machine water tank is equipped with a pH meter and a conductivity meter. The pure water in the pure water tank is transported to the cleaning machine water tank after passing through a pure water transfer pump and a security filter.

[0014] As a further improvement of this utility model, an emergency dilution pipe for injecting pure water into the raw water tank is also provided at the outlet of the pure water delivery pump.

[0015] As a further improvement of this utility model, the raw water tank delivers wastewater to the pretreatment system via a raw water pump.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This invention achieves multi-stage purification of battery cleaning machine wastewater through filtration pretreatment, ultrafiltration, and RO reverse osmosis treatment. This ensures the wastewater meets the conductivity and pH requirements for battery cleaning, enabling wastewater recycling and significantly reducing pure water replenishment. A dosing device is installed, independently adding chemicals to the ultrafiltration and RO systems via branch pipelines. This avoids dilution of chemicals after passing through the ultrafiltration system, preventing scaling in the RO system and improving descaling efficiency. An emergency bypass pipe is installed. When the ultrafiltration system experiences a pressure differential exceeding the limit or malfunction, the emergency bypass pipe activates, shutting down the ultrafiltration system. Wastewater bypasses the ultrafiltration system after pretreatment and directly enters the RO system, ensuring continuous operation of the cleaning system while the chemicals continuously protect the RO system from scaling.

[0018] 2. This utility model uses a two-stage filtration process of quartz sand and activated carbon, combined with a security filter, to ensure that when wastewater enters the ultrafiltration system, the levels of suspended solids, colloids, and organic matter in the water meet the requirements, thereby reducing the load on the subsequent membrane system and extending the membrane life.

[0019] 3. This utility model sets up a permeate return pipe at the outlet of the reverse osmosis membrane device, and builds a return pipeline through the permeate return pipe to repeatedly process reverse osmosis wastewater and improve the quality of reverse osmosis.

[0020] 4. This utility model delivers pure water to the original water tank through an emergency dilution pipe. When the water quality in the battery cleaning machine suddenly deteriorates, the wastewater in the original water tank is diluted through the emergency dilution pipe to prevent the pollutants in the wastewater from exceeding the critical value and causing the treatment membrane in the subsequent treatment device to become clogged. The cleaning machine's water tank is equipped with a pH meter and conductivity meter to monitor the water quality in real time and automatically trigger water replenishment or circulation treatment to avoid affecting battery cleaning due to unqualified water quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] In the picture:

[0023] 1. Cleaning machine system; 11. Cleaning machine water tank; 12. Cleaning machine;

[0024] 2. Raw water tank; 21. Raw water pump;

[0025] 3. Pretreatment system; 31. Quartz sand filter; 32. Activated carbon filter;

[0026] 4. Security filter;

[0027] 51. Ultrafiltration unit; 52. Ultrafiltration water tank; 53. Booster pump; 54. Return bypass pipe;

[0028] 6. Emergency bypass pipe; 7. RO system;

[0029] 71. Reverse osmosis membrane unit; 72. High-pressure pump; 73. Sewage pipe; 74. Recirculation pipe;

[0030] 8. Pure water tank; 81. Pure water transfer pump; 82. Emergency dilution pipe; 9. Dosing device. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1 In this embodiment of the utility model, a water circulation treatment device for a battery cleaning machine is provided, in which the raw water tank 2, the pretreatment system 3, the ultrafiltration system, the RO system 7, the pure water tank 8 and the cleaning machine system 1 are connected in sequence along the water flow direction to form a water circulation loop.

[0033] The cleaning system 1 includes a cleaning machine 12 and a cleaning water tank 11. Wastewater from the cleaning machine 12 is discharged into the cleaning water tank 11, while purified water, after circulation, is filtered by a security filter 4 and then delivered to the cleaning water tank 11. A bidirectional water circulation is formed between the cleaning water tank 11 and the cleaning machine 12 via a valve circuit. The cleaning water tank 11 is equipped with a pH meter and a conductivity meter. Purified water from the pure water tank 8 is delivered to the cleaning water tank 11 via a pure water delivery pump 81 and the security filter 4. An emergency dilution pipe 82 for injecting pure water into the raw water tank 2 is also installed at the outlet of the pure water delivery pump 81.

[0034] Raw water tank 2 delivers wastewater to quartz sand filter 31 via raw water pump 21.

[0035] The pretreatment system 3 includes a quartz sand filter 31 and an activated carbon filter 32 arranged sequentially along the wastewater flow direction. A security filter 4 is provided between the activated carbon filter 32 and the ultrafilter 51.

[0036] The ultrafiltration system includes an ultrafilter 51, an ultrafiltration tank 52, and a booster pump 53 arranged sequentially along the wastewater flow direction. A security filter 4 is installed at the outlet of the booster pump 53. The outlet of the booster pump 53 is connected to the activated carbon filter 32 through a reflux bypass pipe 54 for reflux and repeated ultrafiltration.

[0037] The dosing device 9 is connected to both the outlet of the activated carbon filter 32 and the outlet of the booster pump 53, thereby independently adding chemicals to the ultrafiltration system and the RO system 7. The dosing device 9 includes a scale inhibitor dosing device and a pH adjustment system. By adding chemicals, it inhibits colloidal fouling, prevents scale formation, and avoids diluting the chemicals in the ultrafiltration system before they enter the RO system 7.

[0038] The RO system 7 includes a high-pressure pump 72 and a reverse osmosis membrane device 71 arranged sequentially along the wastewater flow direction. The wastewater permeated from the reverse osmosis membrane device 71 is discharged to the sewage network through the sewage pipe 73. The purified water outlet of the reverse osmosis membrane device 71 is connected to the inlet of the high-pressure pump 72 through the osmosis return pipe 74. If the pure water after reverse osmosis treatment does not meet the usage standards, it is returned through the osmosis return pipe 74 and repeated reverse osmosis filtration to improve the reverse osmosis effect.

[0039] An emergency bypass pipe 6 is also installed between the pretreatment system 3 and the ultrafiltration system. The emergency bypass pipe 6 connects the inlet of the high-pressure pump 72 in both the pretreatment system 3 and the RO system 7. Either the emergency bypass pipe 6 or the ultrafiltration system can be activated. When the pressure difference of the ultrafiltration system exceeds the limit or malfunctions, the system automatically switches to bypass mode: after pretreatment and chemical dosing, the wastewater bypasses the ultrafiltration system and flows directly into the RO system 7, ensuring continuous operation of the cleaning machine, while the chemicals continuously protect the RO membrane from scaling.

[0040] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0041] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A water circulation treatment device for use in a battery cleaning machine, characterized in that, The cleaning wastewater from the cleaning machine system (1) is injected into the raw water tank (2). Along the wastewater flow direction, the raw water tank (2), the pretreatment system (3) for filtering wastewater, the ultrafiltration system, the RO system (7), the pure water tank (8), and the cleaning machine system (1) are connected in sequence to form a wastewater circulation. It also includes a dosing device (9), the dosing port of which is connected to the inlet of both the ultrafiltration system and the RO system (7). An emergency bypass pipe (6) is also provided between the pretreatment system (3) and the ultrafiltration system. The emergency bypass pipe (6) connects the pretreatment system (3) and the RO system (7). Either the emergency bypass pipe (6) or the ultrafiltration system can be activated.

2. The water circulation treatment device for a battery cleaning machine according to claim 1, characterized in that, The pretreatment system (3) includes a quartz sand filter (31) and an activated carbon filter (32) arranged sequentially along the wastewater flow direction, and a security filter (4) is provided between the activated carbon filter (32) and the ultrafiltration system.

3. The water circulation treatment device for a battery cleaning machine according to claim 2, characterized in that, The ultrafiltration system includes an ultrafilter (51), an ultrafiltration water tank (52), and a booster pump (53) arranged sequentially along the wastewater flow direction. A security filter (4) is installed at the outlet of the booster pump (53), and the dosing port of the dosing device (9) is connected to both the outlet of the activated carbon filter (32) and the outlet of the booster pump (53).

4. The water circulation treatment device for a battery cleaning machine according to claim 3, characterized in that, The outlet of the booster pump (53) is connected to the activated carbon filter (32) via a reflux bypass pipe (54) for reflux ultrafiltration.

5. A water circulation treatment device for a battery cleaning machine according to any one of claims 2 to 4, characterized in that, The RO system (7) includes a high-pressure pump (72) and a reverse osmosis membrane device (71) arranged sequentially along the wastewater flow direction. The wastewater permeated from the reverse osmosis membrane device (71) is discharged to the sewage network through the sewage pipe (73).

6. A water circulation treatment device for a battery cleaning machine according to claim 5, characterized in that, The purified water outlet of the reverse osmosis membrane device (71) is connected to the inlet of the high-pressure pump (72) through the osmosis return pipe (74), thereby establishing a return pipeline for recirculating reverse osmosis wastewater.

7. A water circulation treatment device for a battery cleaning machine according to claim 3 or 4, characterized in that, The inlet of the emergency bypass pipe (6) is connected in parallel with the inlet of the ultrafilter (51) and one of them can be activated. The outlet of the emergency bypass pipe (6) is connected to the inlet of the high-pressure pump (72) in the RO system (7).

8. A water circulation treatment device for a battery cleaning machine according to any one of claims 1 to 4, characterized in that, The cleaning machine system (1) includes a cleaning machine (12) and a cleaning machine water tank (11). The wastewater after cleaning by the cleaning machine (12) is discharged into the cleaning machine water tank (11). The cleaning machine water tank (11) is connected to the original water tank (2). The cleaning machine water tank (11) is equipped with a pH meter and a conductivity meter. The pure water in the pure water tank (8) is transported to the cleaning machine water tank (11) through the pure water transfer pump (81) and the security filter (4).

9. A water circulation treatment device for a battery cleaning machine according to claim 8, characterized in that, An emergency dilution pipe (82) for injecting pure water into the raw water tank (2) is also installed at the outlet of the pure water transfer pump (81).

10. A water circulation treatment device for a battery cleaning machine according to any one of claims 1 to 4, characterized in that, The raw water tank (2) delivers wastewater to the pretreatment system (3) via the raw water pump (21).

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