System and method for collecting and recycling cooling water of cold-rolled flash nickel-plated machine seal

Abstract

The present application relates to the technical field of steel rolling, and discloses a system and method for collecting and recycling cooling water for cold-rolled nickel-plated machine seals. The system includes: a cooling water collection tank, which is used to collect cooling water for cooling the nickel-plated circulating pump seal; a stationary liquid supply tank, which is used to obtain cooling water in the cooling water collection tank and provide cooling water for the nickel-plated circulating pump seal; a liquid pump, which is used to transport the cooling water in the cooling water collection tank to the stationary liquid supply tank; an evaporator, which is used to obtain the cooling water transported by the liquid pump, and separate the cooling water into a nickel solution to obtain a concentrated nickel solution. The technical solution proposed in the present application can collect and recycle the cooling water of the cold-rolled nickel-plated machine seal, will not generate external wastewater, and can achieve zero pollution to the external environment.

Description

Technical Field

[0001] The present application relates to the technical field of steel rolling, and discloses a system and method for collecting and recycling cooling water of a cold-rolled nickel flash plating machine seal. Background Art

[0002] In recent years, in order to meet the requirements of lightweight and ultra-high strength of automobile steel, many steel companies have configured a flash nickel plating system on the traditional high-strength galvanizing line. The system is located between the strip cleaning section and the annealing furnace, and its main function is to improve the surface quality of high-strength steel after galvanizing. The solution in the flash nickel plating system is transported to the flash nickel plating working tank through a circulating pump, and each circulating pump is designed with a set of mechanical seal cooling pipelines for mechanical seal cooling. The mechanical seal flushing water is supplied by the production line circulating water, and the flushing water flows out of the pump mechanical seal and is directly discharged into the pit. In theory, the mechanical seal has no leakage, and the flushing water flowing out of the pump mechanical seal does not contain nickel; but after long-term use, the mechanical seal has different degrees of leakage, so the flushing water flowing out of the pump contains nickel solution. Nickel-containing waste liquid is toxic and pollutes the environment. It costs a lot of money to entrust a professional sewage treatment company to recycle and treat it. In order to treat these nickel-containing wastewaters, it will cause serious human damage and financial losses to the company. Therefore, the present application proposes a cold-rolled nickel-plated machine seal cooling water collection and recycling system, which can realize the automatic collection and recycling of cold-rolled galvanized nickel-plated machine seal cooling wastewater, avoiding the production of nickel-containing waste liquid, which in turn requires high costs to entrust professional sewage treatment manufacturers for recycling and treatment. Summary of the invention

[0003] The present application relates to the field of steel rolling technology, and discloses a system and method for collecting and recycling cooling water of cold rolling nickel flash plating machine seals. The system and method can solve the problems of environmental pollution caused by nickel-containing waste liquid and the loss of a large amount of manpower and material resources, and can realize the automatic collection and recycling of cooling waste water of cold rolling zinc-plated nickel flash plating machine seals.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to a first aspect of an embodiment of the present application, a system for collecting and recycling cooling water for a cold-rolled nickel-plated mechanical seal is provided, the system comprising: a cooling water collecting tank, the cooling water collecting tank being used to collect cooling water for cooling a nickel-plated circulating pump mechanical seal; a stationary liquid supply tank, the stationary liquid supply tank being used to obtain cooling water in the cooling water collecting tank and provide cooling water for the nickel-plated circulating pump mechanical seal; a liquid pumping pump, the liquid pumping pump being used to transport the cooling water in the cooling water collecting tank to the stationary liquid supply tank; an evaporator, the evaporator being used to obtain the cooling water transported by the liquid pumping pump, and subjecting the cooling water to nickel solution separation to obtain a concentrated nickel solution.

[0006] In one embodiment of the present application, based on the aforementioned scheme, the cooling water collecting tank includes a first liquid level gauge and a filtering device, the first liquid level gauge is used to detect the first liquid level of the cooling water in the cooling water collecting tank, and the filtering device is used to prevent water-insoluble substances from being transported to the static liquid supply tank by the liquid pump.

[0007] In one embodiment of the present application, based on the aforementioned scheme, the static liquid supply tank includes a second liquid level gauge and a water replenishment valve, the second liquid level gauge is used to detect the second liquid level of the cooling water in the static liquid supply tank, and the water replenishment valve is used to provide desalted water to the static liquid supply tank.

[0008] In one embodiment of the present application, based on the aforementioned scheme, the static liquid supply tank includes two chambers, namely a liquid inlet chamber and a liquid outlet chamber. The liquid inlet chamber is used to allow the cooling water delivered by the liquid pump to pass through, and the liquid outlet chamber is used to deliver the cooling water of the static liquid supply tank to the flash nickel-plated circulating pump seal.

[0009] In one embodiment of the present application, based on the aforementioned scheme, the static liquid supply tank also includes a static overflow plate, which is used to divide the static liquid supply tank into a liquid inlet chamber and a liquid outlet chamber, and prevent substances that are not easily soluble in water from entering the liquid outlet chamber from the liquid inlet chamber.

[0010] In one embodiment of the present application, based on the above-mentioned solution, the system further includes a switching valve, and the switching valve is used to control the delivery of the cooling water in the cooling water collection tank to the stationary liquid supply tank or the evaporator.

[0011] In one embodiment of the present application, based on the aforementioned solution, the system further includes a switching valve, which is used to control the cooling water of the static liquid supply tank to be delivered to the flash nickel-plated circulating pump seal or the evaporator.

[0012] According to a second aspect of an embodiment of the present application, a method for collecting and recycling cooling water of a cold-rolled nickel-plated mechanical seal is provided, the method comprising: collecting cooling water for cooling the nickel-plated circulating pump mechanical seal through the cooling water collecting tank; obtaining a first liquid level of the cooling water in the cooling water collecting tank through the first liquid level gauge, if the first liquid level is greater than a first liquid level threshold, conveying the cooling water in the cooling water collecting tank to the static liquid supply tank or the evaporator through the liquid pump; obtaining the conductivity of the cooling water in the cooling water collecting tank through the conductivity probe, if the conductivity is less than or equal to the conductivity threshold, conveying the cooling water in the cooling water collecting tank to the static liquid supply tank, so as to cool the nickel-plated circulating pump mechanical seal through the cooling water.

[0013] In one embodiment of the present application, based on the aforementioned scheme, the method further includes: if the conductivity is greater than the conductivity threshold, controlling the switching valve to switch to the pipeline to the evaporator to transport the cooling water in the cooling water collection tank to the evaporator, and transporting the concentrated nickel solution obtained by evaporation to the nickel solution circulation box.

[0014] In one embodiment of the present application, based on the aforementioned scheme, the method further includes: obtaining a second liquid level of the cooling water in the static liquid supply tank through the second liquid level meter, and if the second liquid level is less than a second liquid level threshold, replenishing desalted water for the static liquid supply tank through the water replenishment valve.

[0015] In the technical solution proposed in the present application, cooling water used for cooling the seal of the flash nickel-plated circulating pump is collected by a cooling water collection tank, which can prevent the cooling water from being directly discharged into the pit after flowing out of the pump seal. The static liquid supply tank can continuously provide cooling water for the flash nickel-plated circulating pump seal for cooling treatment. The conductivity of the cooling water detected by the conductivity probe can be used to control whether the cooling water is delivered to the static liquid supply tank or to the evaporator, and the nickel solution concentrated by the evaporator can be delivered to the nickel solution circulation tank, so that the cooling water flowing out of the pump seal can be recycled, thereby achieving the goal of reducing environmental pollution and reducing the high cost of entrusting a professional sewage treatment company to carry out recycling treatment.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 A schematic diagram of a system for collecting and recycling cooling water for cold-rolled nickel flash plating machine seals in an embodiment of the present application is shown;

[0019] Figure 2 A flow chart showing a method for collecting and recycling cooling water of a cold-rolled nickel flash plating machine seal in an embodiment of the present application is shown;

[0020] The following are the descriptions of the reference numerals:

[0021] 101—Cooling water collection tank, 102—Stationary liquid supply tank,

[0022] 103 - liquid pump, 104 - evaporator,

[0023] 105—switching valve, 106—static overflow plate,

[0024] 107—Nickel flashed circulation pump. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0026] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0027] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0029] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.

[0031] The implementation details of the technical solution of the embodiment of the present application are described in detail below:

[0032] Figure 1 A schematic diagram of a cold-rolled nickel flash plating machine seal cooling water collection and recycling system in an embodiment of the present application is shown.

[0033] like Figure 1 As shown, in the present application, the cooling water collection and recycling system 100 for cold-rolled nickel flash-plated machine seals includes: a cooling water collection tank 101, wherein the cooling water collection tank 101 is used to collect cooling water for cooling the nickel flash-plated circulating pump machine seal (not shown in the figure); a stationary liquid supply tank 102, wherein the stationary liquid supply tank 102 is used to obtain the cooling water in the cooling water collection tank 101, and provide cooling water for the nickel flash-plated circulating pump machine seal; a liquid pump 103, wherein the liquid pump 103 is used to transport the cooling water in the cooling water collection tank 101 to the stationary liquid supply tank 102; an evaporator 104, wherein the evaporator 104 is used to obtain the cooling water transported by the liquid pump 103, and separate the cooling water into a nickel solution to obtain a concentrated nickel solution.

[0034] In the present application, the ground where the flash nickel plating working tank (not shown in the figure) is located can be used as a reference, and the ground height is defined as 0m. The cooling water collecting tank 101 is set on a pit at -8.5m, and the flash nickel plating circulating pump 107 is set at a position of -6.5m. The cooling water for cooling the flash nickel plating circulating pump seal can be collected through multiple branch collecting pipelines (not shown in the figure). The multiple branch collecting pipelines collect the collected cooling waste water through the main collecting pipeline (not shown in the figure) and transport it to the cooling water collecting tank 101. The cooling water can be cooling water without nickel solution or cooling water containing nickel solution. The branch collecting pipelines and the main collecting pipeline can be set in the ditch of the pit.

[0035] In the present application, the static liquid supply tank 102 is set on the ground at 0m. The static liquid supply tank 102 can filter and statically store the cooling water obtained from the cooling water collection tank 101, and can use the gravitational potential energy to flow the filtered and static cooling water into the flash nickel-plated circulation pump 107 for mechanical seal cooling, so as to fully recycle the cooling water and reduce the loss of cooling water.

[0036] In the present application, the liquid pump 103 transports the cooling water in the cooling water collection tank 101 to the static liquid supply tank 102 or the evaporator 104. The evaporator 104 separates the cooling water into a nickel solution to obtain a concentrated nickel solution. The concentrated nickel solution is transported to a nickel solution circulation box (not shown in the figure), which can provide a concentrated nickel solution for the flash nickel plating working tank and avoid the generation of nickel-containing waste liquid.

[0037] Continue to refer to Figure 1 In one embodiment of the present application, the cooling water collecting tank 101 includes a first liquid level gauge (not shown in the figure) and a filtering device (not shown in the figure), wherein the first liquid level gauge is used to detect the first liquid level of the cooling water in the cooling water collecting tank 101, and the filtering device is used to prevent water-insoluble substances from being transported to the static liquid supply tank 102 by the liquid pump 103.

[0038] In the present application, the first liquid level meter can detect the first liquid level of the cooling water in the cooling water collecting tank 101. If the first liquid level is greater than the first liquid level threshold, the liquid pump 103 is controlled to transport the cooling water in the cooling water collecting tank 101 to the static liquid supply tank 102 or the evaporator 104. A filtering device is arranged in front of the liquid pump 103, and the filtering device can prevent water-insoluble substances from being transported to the static liquid supply tank 102 or the evaporator 104 by the liquid pump 103.

[0039] Continue to refer to Figure 1 In one embodiment of the present application, the stationary liquid supply tank 102 includes a second liquid level gauge (not shown in the figure) and a water replenishment valve (not shown in the figure), wherein the second liquid level gauge is used to detect the second liquid level of the cooling water in the stationary liquid supply tank 102, and the water replenishment valve is used to provide desalted water to the stationary liquid supply tank 102.

[0040] In the present application, the second liquid level gauge can detect the second liquid level of the cooling water in the static liquid supply tank 102. If the second liquid level is less than the second liquid level threshold, the water replenishment valve is controlled to provide desalted water to the static liquid supply tank 102, so as to prevent the static liquid supply tank 102 from providing too little cooling water to the flash nickel-plated circulation pump 107, thereby causing the flash nickel-plated circulation pump 107 to overheat and cause an accident.

[0041] Continue to refer to Figure 1 In one embodiment of the present application, the stationary liquid supply tank 102 includes two chambers, namely a liquid inlet chamber and a liquid outlet chamber. The liquid inlet chamber is used to allow the cooling water delivered by the liquid pump 103 to pass through, and the liquid outlet chamber is used to deliver the cooling water of the stationary liquid supply tank 102 to the flash nickel-plated circulating pump seal.

[0042] In the present application, the valve of the liquid outlet chamber needs to be opened before the flash nickel-plated circulating pump 107 starts working, so that the cooling water of the stationary liquid supply tank 102 can be delivered to the seal of the flash nickel-plated circulating pump, to prevent the stationary liquid supply tank 102 from being unable to provide cooling water for the flash nickel-plated circulating pump 107 when the flash nickel-plated circulating pump is working, thereby causing the flash nickel-plated circulating pump 107 to overheat and cause an accident, and the valve of the liquid outlet chamber needs to be continuously opened during the operation of the flash nickel-plated circulating pump 107 until the flash nickel-plated circulating pump no longer works.

[0043] Continue to refer to Figure 1 In one embodiment of the present application, the static liquid supply tank 102 also includes a static overflow plate 106, and the static overflow plate 106 is used to divide the static liquid supply tank 102 into a liquid inlet chamber and a liquid outlet chamber, and prevent substances that are not easily soluble in water from entering the liquid outlet chamber from the liquid inlet chamber.

[0044] Continue to refer to Figure 1 In one embodiment of the present application, the cooling water collection tank 101 further includes a conductivity probe (not shown in the figure), and the conductivity probe is used to detect the conductivity of the cooling water in the cooling water collection tank 101.

[0045] In the present application, the conductivity can detect the conductivity of the cooling water in the cooling water collection tank 101. If the conductivity is greater than the conductivity threshold, the cooling water in the cooling water collection tank 101 is transported to the evaporator 104, and the concentrated nickel solution is obtained by using the evaporator 104, thereby realizing evaporation and recycling.

[0046] Continue to refer to Figure 1 In one embodiment of the present application, the system further includes a switching valve 105 , and the switching valve 105 is used to control the delivery of the cooling water in the cooling water collection tank 101 to the stationary liquid supply tank 102 or the evaporator 104 .

[0047] In the present application, when the conductivity of the cooling water in the cooling water collection tank 101 is less than or equal to the conductivity threshold of the switching valve 105, the switching valve 105 will switch to the pipeline to the static liquid supply tank 102, otherwise the switching valve 105 will be automatically switched to the pipeline to the evaporator 104 through a pre-set program.

[0048] In the present application, the pipelines through which cooling water or concentrated nickel solution circulate are all made of corrosion-resistant materials. The pipelines may be stainless steel pipelines with high corrosion resistance or pipelines made of other corrosion-resistant materials.

[0049] Based on the cold-rolled nickel-plated machine seal cooling water collection and recycling system in the first aspect of the present application, the present application also proposes a cold-rolled nickel-plated machine seal cooling water collection and recycling method.

[0050] Figure 2 A flow chart of a method for collecting and recycling cooling water from a cold-rolled nickel-plated machine seal in an embodiment of the present application is shown.

[0051] like Figure 2 As shown, the method for collecting and recycling cooling water of cold-rolled nickel flash-plated machine seals includes at least steps 210 to 250.

[0052] The following will Figure 2 Steps 210 to 250 are described in detail:

[0053] In step 210, the cooling water used for cooling the flash nickel-plated circulating pump seal is collected by the cooling water collection tank.

[0054] In the present application, cooling water for cooling the flash nickel-plated circulating pump seal can be collected through multiple branch collecting pipelines. The multiple branch collecting pipelines collect the collected cooling waste water through the main collecting pipeline, and transport the collected cooling water to the cooling water collection tank.

[0055] Continue to refer Figure 2 In step 230, the first liquid level of the cooling water in the cooling water collecting tank is obtained by the first liquid level meter. If the first liquid level is greater than the first liquid level threshold, the cooling water in the cooling water collecting tank is transported to the static liquid supply tank or the evaporator by the liquid pump.

[0056] Continue to refer Figure 2 In step 250, the conductivity of the cooling water in the cooling water collection tank is obtained by the conductivity probe. If the conductivity is less than or equal to the conductivity threshold, the cooling water in the cooling water collection tank is transported to the static liquid supply tank to cool the flash nickel-plated circulating pump seal by the cooling water.

[0057] In the present application, the conductivity of the cooling water in the cooling water collection tank is obtained by the conductivity probe. If the conductivity is less than or equal to the conductivity threshold, the cooling water in the cooling water collection tank is transported to the static liquid supply tank. The conductivity threshold can be adjusted according to actual needs. The more flash nickel-plated circulation pumps there are, the higher the conductivity of the cooling water in the cooling water collection tank will be.

[0058] In this application, the staff can obtain the system status signal of each monitoring substation through the HMI human-machine interface system. When special circumstances occur, the staff can remotely open the control valve according to the on-site situation to solve the fault of the current monitoring substation.

[0059] In some embodiments of the present application, the method also includes: if the conductivity is greater than the conductivity threshold, controlling the switching valve to switch to the pipeline to the evaporator to transport the cooling water in the cooling water collection tank to the evaporator, and transporting the concentrated nickel solution obtained by evaporation to the nickel solution circulation box.

[0060] In the present application, if the conductivity is greater than the conductivity threshold, the switching valve is controlled to switch to the pipeline to the evaporator to transport the cooling water in the cooling water collection tank to the evaporator, and the concentrated nickel solution obtained by evaporation is transported to the nickel solution circulation box. This can provide a concentrated nickel solution for the flash nickel plating working tank, avoid the generation of nickel-containing waste liquid, and reduce environmental pollution.

[0061] In some embodiments of the present application, the method further includes: obtaining a second liquid level of cooling water in the static liquid supply tank through the second liquid level meter, and if the second liquid level is less than a second liquid level threshold, replenishing desalted water to the static liquid supply tank through the water replenishment valve.

[0062] In the present application, if the second liquid level is less than the second liquid level threshold, desalted water is replenished to the static liquid supply tank through the water replenishment valve, so as to avoid the static liquid supply tank providing too little cooling water to the flash nickel plating circulation pump, thereby causing the flash nickel plating circulation pump to overheat and cause an accident.

[0063] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0064] The technical solution proposed in this application can collect and recycle nickel-containing wastewater, thereby solving the problem of direct discharge of nickel-containing wastewater and reducing the cost of nickel-containing wastewater treatment.

[0065] The technical solution proposed in this application can reduce the risk of occupational diseases for employees. Nickel-containing wastewater is toxic, and the risk of poisoning for relevant personnel during the pumping process can be reduced.

[0066] The technical solution proposed in this application can prevent the discharge of nickel-containing wastewater, further enhance the company's environmental image, and help the company create and maintain A in environmental protection.

[0067] The technical solution proposed in this application can be promoted and applied in similar working conditions in related industries such as chemical industry, metallurgy, and papermaking.

[0068] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0069] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0070] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be performed without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A cold rolling flash nickel plating machine seal cooling water collection and recycling system, characterized in that: The system comprises: A cooling water collection tank, the cooling water collection tank is used to collect cooling water for cooling the flash nickel-plated circulating pump seal; A stationary liquid supply tank, which is used to obtain cooling water from the cooling water collection tank and provide cooling water for the flash nickel-plated circulating pump seal; A liquid pump, the liquid pump is used to transport the cooling water in the cooling water collection tank to the static liquid supply tank; An evaporator, the evaporator is used to obtain the cooling water delivered by the liquid pump, and separate the cooling water into a nickel solution to obtain a concentrated nickel solution; The cooling water collection tank further comprises a conductivity probe, and the conductivity probe is used to detect the conductivity of the cooling water in the cooling water collection tank; The system further comprises a switching valve, and the switching valve is used for controlling the delivery of cooling water in the cooling water collection tank to the stationary liquid supply tank or the evaporator according to the conductivity.

2. The system according to claim 1, characterized in that The cooling water collecting tank comprises a first liquid level gauge and a filtering device, wherein the first liquid level gauge is used to detect a first liquid level of the cooling water in the cooling water collecting tank, and the filtering device is used to prevent water-insoluble substances from being transported to the static liquid supply tank by the liquid pump.

3. The system according to claim 1, characterized in that The stationary liquid supply tank comprises a second liquid level gauge and a water replenishment valve, wherein the second liquid level gauge is used to detect a second liquid level of cooling water in the stationary liquid supply tank, and the water replenishment valve is used to provide desalted water to the stationary liquid supply tank.

4. The system according to claim 1, characterized in that The stationary liquid supply tank includes two chambers, namely a liquid inlet chamber and a liquid outlet chamber. The liquid inlet chamber is used to allow cooling water delivered by the liquid pump to enter, and the liquid outlet chamber is used to deliver the cooling water of the stationary liquid supply tank to the flash nickel-plated circulating pump seal.

5. The system according to claim 4, characterized in that The stationary liquid supply tank also includes a stationary overflow plate, which is used to divide the stationary liquid supply tank into a liquid inlet chamber and a liquid outlet chamber, and prevent substances that are not easily soluble in water from entering the liquid outlet chamber from the liquid inlet chamber.

6. A method for collecting and recycling cooling water of cold-rolled flash nickel-plated machine seals, characterized in that: The method is applied to the system according to any one of claims 1 to 5, and the method comprises: The cooling water used for cooling the flash nickel-plated circulating pump seal is collected by the cooling water collection tank; Obtaining a first liquid level of the cooling water in the cooling water collecting tank by means of a first liquid level meter, and if the first liquid level is greater than a first liquid level threshold, delivering the cooling water in the cooling water collecting tank to the stationary liquid supply tank or the evaporator by means of the liquid pump; The conductivity of the cooling water in the cooling water collection tank is obtained by the conductivity probe. If the conductivity is less than or equal to the conductivity threshold, the cooling water in the cooling water collection tank is transported to the static liquid supply tank to cool the flash nickel-plated circulating pump seal by the cooling water.

7. The method according to claim 6, characterized in that The method further comprises: If the conductivity is greater than the conductivity threshold, the switching valve is controlled to switch to the pipeline to the evaporator to transport the cooling water in the cooling water collection tank to the evaporator, and to transport the concentrated nickel solution obtained by evaporation to the nickel solution circulation box.

8. The method according to claim 6, characterized in that The method further comprises: The second liquid level of the cooling water in the stationary liquid supply tank is obtained by a second liquid level meter. If the second liquid level is less than a second liquid level threshold, the stationary liquid supply tank is supplemented with desalted water by a water replenishment valve.

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