Cleaning liquid circulating system with automatic liquid level balancing function and cleaning system

Abstract

The utility model belongs to the field of cleaning equipment, and particularly discloses a liquid level automatic balancing cleaning liquid circulating system and a cleaning system comprising the cleaning liquid circulating system. The cleaning liquid circulation system comprises a first circulation tank, a second circulation tank and a third circulation tank, wherein the first circulation tank is provided with a first circulation pipeline and a first backflow pipeline; the second circulating tank is provided with a second circulating pipeline and a second backflow pipeline; and the liquid level balancing pipeline is communicated with the first circulating tank and the second circulating tank. According to the cleaning fluid circulation system, when the first cleaning tank flows to the second cleaning tank, the cleaning fluid is allowed to automatically flow from the second circulation tank to the first circulation tank, the liquid levels of the two circulation tanks are kept balanced, and the problem that the liquid levels of the two circulation tanks are abnormal is completely eradicated.

Description

Technical Field

[0001] The utility model belongs to the field of cleaning equipment, and in particular relates to a cleaning liquid circulation system with automatic liquid level balance and a cleaning system comprising the cleaning liquid circulation system. Background Art

[0002] Cleaning is a key process in the production of continuous annealing and hot-dip galvanizing (aluminum-zinc / zinc-based alloy) steel strips. Its function is to use physical and chemical reactions to eliminate the sludge on the surface of the strip, so that the strip enters the annealing furnace and zinc pot with a clean surface and is galvanized, preventing furnace roller nodules and ensuring the adhesion of the coating. At present, continuous units such as continuous annealing, hot-dip galvanizing / aluminum-zinc / zinc-aluminum-magnesium basically adopt a composite cleaning method of alkali cleaning + electrolytic degreasing + hot water brushing + soft water rinsing. Among them, alkali cleaning and electrolytic cleaning each use an independent circulation tank, and the alkali liquid in the two tanks cannot flow. In production, due to various factors, the cleaning section often suffers from problems such as wear of the squeeze roller or failure of the pressing mechanism, resulting in the alkali liquid being carried from the alkali washing section to the electrolysis section by the strip and flowing into the electrolysis tank, causing the liquid level of the alkali washing tank to drop abnormally or even be emptied, resulting in no alkali liquid being transported to the alkali washing tank, causing the squeeze roller and brush roller to adhere to sludge, the strip is not cleaned, and the sinking roller seal wears and leaks, and other production quality accidents. At the same time, the alkali solution brought into the electrolysis section causes the liquid level of the electrolysis tank to rise and overflow, increasing the cleaning cost.

[0003] In view of this, the existing technology needs to be improved. Utility Model Content

[0004] The utility model aims to provide a cleaning liquid circulation system with automatic liquid level balance which can eliminate the abnormal liquid level problem caused by liquid cross-talk between two circulation tanks and a cleaning system comprising the cleaning liquid circulation system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] According to a first aspect of the utility model, a cleaning liquid circulation system with automatic liquid level balancing is provided, comprising:

[0007] a first circulation tank, wherein the first circulation tank is provided with a first circulation pipeline and a first return pipeline;

[0008] a second circulation tank, the second circulation tank being provided with a second circulation pipe and a second return pipe; and

[0009] A liquid level balancing pipeline is connected to the first circulation tank and the second circulation tank.

[0010] According to one embodiment of the utility model, the opening of the liquid level balancing pipe at the second circulation tank is higher than the opening of the liquid level balancing pipe at the first circulation tank, and the liquid level balancing pipe is provided with a one-way flow valve that only allows the cleaning liquid to flow from the second circulation tank to the first circulation tank.

[0011] According to an embodiment of the utility model, the second circulation tank is equipped with a second overflow pipe, and the opening of the second overflow pipe at the second circulation tank is higher than the opening of the liquid level balance pipe at the second circulation tank.

[0012] According to an embodiment of the utility model, the first circulation tank is equipped with a first exhaust pipe, and the first exhaust pipe is equipped with a first control valve.

[0013] According to an embodiment of the utility model, the second circulation tank is equipped with a second exhaust pipe, and the second exhaust pipe is equipped with a second control valve.

[0014] According to an embodiment of the present utility model, the first circulation tank is equipped with a first overflow pipe.

[0015] According to an embodiment of the utility model, the first circulation pipeline is provided with a first circulation pump, and the second circulation pipeline is provided with a second circulation pump.

[0016] According to an embodiment of the present invention, the first return pipe and the second return pipe are respectively provided with corresponding filtering devices.

[0017] According to a second aspect of the utility model, there is provided a cleaning system, comprising:

[0018] First cleaning tank;

[0019] a second cleaning tank; and

[0020] The cleaning liquid circulation system with automatic liquid level balance described in the first aspect of the utility model, the first circulation pipe is connected to the cleaning liquid inlet of the first cleaning tank, the first reflux pipe is connected to the cleaning liquid outlet of the first cleaning tank, the second circulation pipe is connected to the cleaning liquid inlet of the second cleaning tank, and the second reflux pipe is connected to the cleaning liquid outlet of the second cleaning tank.

[0021] According to one embodiment of the utility model, the cleaning system is a strip steel cleaning system, the first cleaning tank is an alkaline cleaning tank, the first circulation tank is an alkaline cleaning tank for supplying alkaline solution to the alkaline cleaning tank, the second cleaning tank is an electrolytic cleaning tank, and the second circulation tank is an electrolytic tank for supplying alkaline solution to the electrolytic cleaning tank.

[0022] By adopting the above technical solution, the utility model has the following beneficial effects:

[0023] The utility model provides a cleaning liquid circulation system and a cleaning system with automatic liquid level balance. By setting a liquid level balance pipe connecting a first circulation tank and a second circulation tank, cleaning liquid is allowed to automatically flow from the second circulation tank to the first circulation tank when liquid flows from the first cleaning tank to the second cleaning tank, thereby maintaining the liquid level balance of the two circulation tanks and preventing abnormal liquid level problems of the two circulation tanks, such as the first circulation tank being emptied and the second circulation tank overflowing.

[0024] The cleaning liquid circulation system and cleaning system with automatic liquid level balance provided by the utility model have the characteristics of simple structure, good stability, obvious effect, automatic and unattended operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a cleaning liquid circulation system with automatic liquid level balance provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] As required, specific embodiments of the present invention are disclosed in the present specification; however, it should be understood that the embodiments disclosed herein are merely examples of the present invention that can be implemented in a variety of alternative forms. In the following description, a number of operating parameters and components are described in a number of contemplated embodiments. These specific parameters and components are used in this specification only as examples and are not intended to be limiting.

[0028] The first aspect of the utility model provides a cleaning liquid circulation system with automatic liquid level balance, such as Figure 1As shown, the cleaning liquid circulation system includes: a first circulation tank 10, the first circulation tank 10 is equipped with a first circulation pipe 11 and a first return pipe 12; a second circulation tank 20, the second circulation tank 20 is equipped with a second circulation pipe 21 and a second return pipe 22; and a liquid level balance pipe 30, the liquid level balance pipe 30 connects the first circulation tank 10 and the second circulation tank 20. The cleaning liquid circulation system with automatic liquid level balance provided by the utility model allows the cleaning liquid to flow automatically between the two circulation tanks by setting the liquid level balance pipe 30 connecting the first circulation tank 10 and the second circulation tank 20, thereby maintaining the liquid level balance of the two circulation tanks and eliminating the abnormal liquid level problem of the two circulation tanks. Specifically, when the liquid level of the second circulation tank 20 rises, the cleaning liquid automatically flows back to the first circulation tank 10 through the liquid level balance pipe 30, which can prevent the first circulation tank 10 from being emptied and the second circulation tank 20 from overflowing.

[0029] In some embodiments, the opening of the liquid level balance pipe 30 at the second circulation tank 20 is higher than the opening of the liquid level balance pipe 30 at the first circulation tank 10, and a one-way flow valve 31 is provided on the liquid level balance pipe 30 to only allow the cleaning liquid to flow from the second circulation tank 20 to the first circulation tank 10. By providing the one-way flow valve 31, it is possible to prevent the dirty cleaning liquid in the first circulation tank 10 from flowing into the second circulation tank 20 and contaminating the cleaning liquid in the second circulation tank 20.

[0030] In some embodiments, the first circulation tank 10 is equipped with a first overflow pipe 13. When the liquid level in the first circulation tank 10 is higher than the first overflow pipe 13, excess cleaning liquid will flow out from the first overflow pipe 13 to prevent the cleaning liquid level in the first circulation tank 10 from being too high. The second circulation tank 20 is equipped with a second overflow pipe 23. When the liquid level in the second circulation tank 10 is higher than the second overflow pipe 23, excess cleaning liquid will flow out from the second overflow pipe 23 to prevent the cleaning liquid level in the second circulation tank 20 from being too high. The opening of the second overflow pipe 23 at the second circulation tank 20 is higher than the opening of the liquid level balance pipe 30 at the second circulation tank 30, ensuring that the cleaning liquid automatically flows back to the first circulation tank 10 before the liquid level in the second circulation tank 20 rises to the overflow opening of the second overflow pipe 23.

[0031] In some embodiments, the first circulation tank 10 is equipped with a first drain pipe 14, and a first control valve 15 is provided on the first drain pipe 14. The first drain pipe 14 and the first control valve 15 are used to drain the liquid in the first circulation tank 10 when the first circulation tank 10 is inspected. The second circulation tank 20 is equipped with a second drain pipe 24, and a second control valve 25 is provided on the second drain pipe 24. The second drain pipe 24 and the second control valve 25 are used to drain the liquid in the second circulation tank 20 when the second circulation tank 20 is inspected.

[0032] In some embodiments, the first circulation pipeline 11 is provided with a first circulation pump 16 for delivering the cleaning liquid. The second circulation pipeline 21 is provided with a second circulation pump 26 for delivering the cleaning liquid.

[0033] In some embodiments, the first reflux pipe 12 and the second reflux pipe 22 are each provided with a corresponding filtering device for removing impurities in the cleaning liquid before the cleaning liquid flows back to the first circulation tank 10 and the second circulation tank 20 .

[0034] The second aspect of the utility model provides a cleaning system, which includes: a first cleaning tank; a second cleaning tank; and the cleaning liquid circulation system with automatic liquid level balance described in the first aspect of the utility model. The first circulation pipe 11 is connected to the cleaning liquid inlet of the first cleaning tank, and is used to supply cleaning liquid to the first cleaning tank. The first reflux pipe 12 is connected to the cleaning liquid outlet of the first cleaning tank, and is used to recover cleaning liquid from the first cleaning tank. The second circulation pipe 21 is connected to the cleaning liquid inlet of the second cleaning tank, and is used to supply cleaning liquid to the second cleaning tank. The second reflux pipe 22 is connected to the cleaning liquid outlet of the second cleaning tank, and is used to recover cleaning liquid from the second cleaning tank. Since it has a cleaning liquid circulation system with automatic liquid level balance, the cleaning system provided by the utility model has the advantages corresponding to the cleaning liquid circulation system with automatic liquid level balance, which will not be repeated here.

[0035] In some embodiments, the cleaning system is a steel strip cleaning system, the first cleaning tank is an alkali cleaning tank, the first circulation tank 10 is an alkali cleaning tank, which is used to transport alkali solution to the alkali cleaning tank to clean the steel strip, the second cleaning tank is an electrolytic cleaning tank, and the second circulation tank 20 is an electrolytic tank, which is used to transport alkali solution to the electrolytic cleaning tank to clean the steel strip. The steel strip is cleaned in the alkali cleaning tank and the electrolytic cleaning tank in sequence.

[0036] A specific embodiment of the strip cleaning system is described below.

[0037] In the production of continuous hot-dip or continuous annealing units, in order to prevent problems such as furnace roller nodules, zinc particles, and dezincification, the strip must be cleaned so that the clean surface enters the annealing furnace. The cleaning includes an alkali washing section and an electrolytic cleaning section, and each has a circulation tank to provide alkali solution to the alkali washing section and the electrolytic cleaning section. In the prior art, due to the harsh environmental conditions in the cleaning section, the squeeze rollers frequently wear or press down failures, resulting in the strip carrying liquid from the alkali washing section to the electrolytic cleaning section. The liquid level of the alkali washing section circulation tank (also called the alkali washing tank) is often emptied, resulting in the squeeze rollers and brush rollers without alkali cleaning and adhesion of sludge, the strip is not cleaned, the sinking roller seal wears and leaks, and other production quality accidents. At the same time, the liquid level of the electrolytic cleaning section circulation tank (also called the electrolytic tank) is abnormally increased, and the overflow of alkali solution leads to increased costs.

[0038] In order to solve the above problems, in the strip steel cleaning system provided by the utility model, a liquid level balancing pipe is arranged between the electrolytic tank and the alkali cleaning tank. The opening of the liquid level balancing pipe at the electrolytic tank is higher than the opening at the alkali cleaning tank, but lower than the overflow port of the electrolytic tank, so as to ensure that the liquid level of the electrolytic tank automatically flows back to the alkali cleaning tank before it rises to the overflow port, thereby preventing abnormal liquid levels of the alkali cleaning tank and the electrolytic tank, maintaining liquid level balance, eliminating hidden dangers such as brush roller sticking sludge and seal wear caused by the absence of alkali liquid in the alkali cleaning section, and ensuring the strip steel cleaning quality. At the same time, a one-way flow valve to the alkali cleaning tank is installed on the liquid level balancing pipe to prevent the dirty alkali liquid in the alkali cleaning tank from flowing into the electrolytic tank and causing pollution. The strip steel cleaning system provided by the utility model has the following advantages: (1) preventing the alkali cleaning tank from being evacuated, thereby avoiding problems such as wear of the cleaning tank seal due to the absence of alkali liquid, and sludge sticking to the brush roller and strip steel, avoiding production accidents such as stopping the machine to replace the seal and brush roller, and improving the cleanliness and quality of the strip steel; (2) reducing the ineffective overflow of alkali liquid after the electrolytic tank liquid level rises, thereby reducing cost losses. The arrangement of the utility model fundamentally eliminates the problem of abnormal liquid levels in the alkali washing tank and the electrolytic tank of the cleaning tank, maintains the balance of liquid levels in each tank, and prevents the problems of brush roller sticking to sludge and seal wear caused thereby, thereby ensuring the cleaning quality of the strip and improving the quality level of the actual product, while reducing the cost loss caused by abnormal liquid level overflow, and eliminating production accidents such as shutdown for replacement of brush rollers and seals caused thereby, thereby improving product quality and unit operation stability.

[0039] In addition, the electrolytic tank is provided with an emptying pipe, a circulation pipe, an overflow pipe and a reflux pipe. The electrolytic tank transports alkali solution to the electrolytic cleaning section through the circulation pipe to clean the strip steel, and recovers the alkali solution through the reflux pipe. The emptying pipe is used to empty the liquid in the electrolytic tank during maintenance. The overflow pipe is installed at the high liquid level of the electrolytic tank. When the tank liquid level is higher than the overflow pipe, the excess alkali solution will flow out from the overflow pipe to prevent the alkali solution in the tank from being too high and affecting the safety of the equipment. The alkali washing tank is provided with an emptying pipe, a circulation pipe, an overflow pipe and a reflux pipe. The alkali washing tank transports alkali solution to the alkali washing section through the circulation pipe to clean the strip steel, and recovers the alkali solution through the reflux pipe. The emptying pipe is used to empty the liquid in the electrolytic tank during maintenance. The overflow pipe is installed at the high liquid level of the alkali washing tank. When the tank liquid level is higher than the overflow pipe, the excess alkali solution will flow out from the overflow pipe to prevent the alkali solution in the tank from being too high and affecting the safety of the equipment.

[0040] Finally, it should be noted that the embodiments described above are only some embodiments of the utility model, not all embodiments. The detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model claimed for protection, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A cleaning liquid circulation system with automatic liquid level balance, characterized in that: include: a first circulation tank, wherein the first circulation tank is provided with a first circulation pipeline and a first return pipeline; a second circulation tank, wherein the second circulation tank is provided with a second circulation pipe and a second reflux pipe; as well as A liquid level balancing pipeline is connected to the first circulation tank and the second circulation tank.

2. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The opening of the liquid level balancing pipe at the second circulation tank is higher than the opening of the liquid level balancing pipe at the first circulation tank, and the liquid level balancing pipe is provided with a one-way flow valve that only allows cleaning liquid to flow from the second circulation tank to the first circulation tank.

3. The cleaning liquid circulation system with automatic liquid level balance according to claim 2, characterized in that: The second circulation tank is equipped with a second overflow pipe, and an opening of the second overflow pipe at the second circulation tank is higher than an opening of the liquid level balance pipe at the second circulation tank.

4. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The first circulation tank is provided with a first exhaust pipe, and the first exhaust pipe is provided with a first control valve.

5. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The second circulation tank is provided with a second exhaust pipe, and the second exhaust pipe is provided with a second control valve.

6. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The first circulation tank is equipped with a first overflow pipe.

7. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The first circulation pipeline is provided with a first circulation pump, and the second circulation pipeline is provided with a second circulation pump.

8. The cleaning liquid circulation system with automatic liquid level balance according to claim 1, characterized in that: The first return pipe and the second return pipe are respectively provided with corresponding filtering devices.

9. A cleaning system, characterized in that: include: First cleaning tank; Second cleaning tank; as well as The cleaning liquid circulation system with automatic liquid level balance according to any one of claims 1 to 8, wherein the first circulation pipe is connected to the cleaning liquid inlet of the first cleaning tank, the first reflux pipe is connected to the cleaning liquid outlet of the first cleaning tank, the second circulation pipe is connected to the cleaning liquid inlet of the second cleaning tank, and the second reflux pipe is connected to the cleaning liquid outlet of the second cleaning tank.

10. The cleaning system according to claim 9, characterized in that: The cleaning system is a strip steel cleaning system, the first cleaning tank is an alkaline cleaning tank, the first circulation tank is an alkaline cleaning tank for supplying alkaline solution to the alkaline cleaning tank, the second cleaning tank is an electrolytic cleaning tank, and the second circulation tank is an electrolytic tank for supplying alkaline solution to the electrolytic cleaning tank.

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