A silicon steel strip cleaning circulation system

Abstract

The utility model provides a kind of silicon steel strip cleaning circulation system, including online cleaning tank and cleaning medium circulating tank, the cleaning medium circulating tank is separated into clear zone and turbid zone by partition, the liquid outlet of clear zone is connected with the liquid inlet end of online cleaning tank by medium delivery pipeline, the liquid outlet end of online cleaning tank is communicated with turbid zone by medium backflow pipeline, and the cleaning medium circulating tank is connected with the circulation filtration assembly of its internal cleaning medium circulation filtration, and the clear zone of cleaning medium circulating tank is connected with the heating assembly of its internal cleaning medium heating.The utility model carries out zoning design to cleaning medium circulating tank, realizes that part of cleaning medium in clear zone is cleaned after steel strip, and then enters clear zone after gravity backflow to turbid zone and being purified by circulation filtration assembly, fully utilizes cleaning medium activity, improves cleaning effect, reduces cleaning medium consumption simultaneously;And heating assembly is arranged to heat cleaning medium in clear zone after cleaning strip, and the utility model optimizes cleaning effect.

Description

Technical Field

[0001] This utility model belongs to the field of strip steel cleaning technology, specifically relating to a silicon steel strip steel cleaning and circulation system. Background Technology

[0002] Cold-rolled silicon steel surfaces typically retain a large amount of rolling oil, emulsion, iron powder, or loose impurities, with the total amount generally reaching 300–600 mg / m³. 2 High-grade silicon steel and electrical steel for new energy applications are difficult to clean due to the high rolling force in the preceding processes, resulting in strong adhesion between contaminants and the strip surface. These residues contaminate the strip surface, and if not cleaned, they will form residual solid particles and carbides after annealing, causing nodules on the furnace rolls, leading to indentations and scratches on the strip surface, ultimately affecting the quality of the annealed coil. Therefore, strip cleaning is a crucial part of the cold rolling process. Current continuous annealing units use a combined multi-stage cleaning process: alkaline washing (chemical) + alkaline brushing (physical + chemical) + electrolytic cleaning + water brushing + water rinsing.

[0003] To ensure the cleaning effect and quality of the online cleaning tank, a media circulation system is installed, which generally consists of a degreasing solution circulation tank, a circulation pump, piping and instruments, etc. The media system provides the unit with a cleaning medium at a certain temperature and concentration. Because the cleaning circulation system is complex and mostly manually operated (e.g., manually adding and draining alkali and water), process stability is insufficient. Currently, cleaning processes generally suffer from the common problems of high consumption of cleaning media (such as alkali and demineralized water) and a large workload. Therefore, the key to the design and control of the cleaning circulation system is to ensure stable cleaning quality, improve the degree of automation in operation, and reduce the unit's energy and media consumption. Utility Model Content

[0004] The purpose of this invention is to provide a silicon steel strip cleaning and circulation system, which can at least solve some of the defects existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A silicon steel strip cleaning and circulation system includes an online cleaning tank and a cleaning medium circulation tank. The cleaning medium circulation tank is divided into a clear zone and a turbid zone by a partition. The outlet of the clear zone is connected to the inlet of the online cleaning tank through a medium conveying pipe. A cleaning circulation pump is installed on the medium conveying pipe. The outlet of the online cleaning tank is connected to the turbid zone through a medium return pipe. A circulation filter assembly is connected to the cleaning medium circulation tank for circulating and filtering the cleaning medium inside. The clear zone of the cleaning medium circulation tank is connected to a heating assembly for heating the cleaning medium inside.

[0007] Furthermore, the circulating filtration assembly includes a magnetic filter pump and a magnetic filter. The suction port of the magnetic filter pump is connected to the clear zone and the turbid zone of the cleaning medium circulation tank through a pipe. The outlet of the magnetic filter pump is connected to the inlet of the magnetic filter. The outlet of the magnetic filter is connected to the clear zone of the cleaning medium circulation tank.

[0008] Furthermore, the outlet of the magnetic filter pump is connected to a short-circuit pipe, the end of which extends into the cleaning zone of the cleaning medium circulation tank.

[0009] Furthermore, both the clear zone and the turbid zone of the cleaning medium circulation tank are equipped with level gauges, the cleaning circulation pump is interlocked with the level of the clear zone, and the magnetic filter pump is interlocked with the level of the turbid zone.

[0010] Furthermore, the heating assembly includes an ultra-hot water pipe that penetrates the cleaning zone of the cleaning medium circulation tank.

[0011] Furthermore, the superheated water pipeline is provided with multiple branch pipelines within the cleaning zone of the cleaning medium circulation tank.

[0012] Furthermore, the heating assembly also includes a steam heating pipeline, the steam outlet end of which extends from the bottom of the cleaning medium circulation tank into the cleaning area.

[0013] Furthermore, both the superheated water pipeline and the steam heating pipeline are equipped with regulating valves, and the cleaning zone of the cleaning medium circulation tank is equipped with a thermometer. The opening degree of the regulating valve is interlocked with the temperature of the cleaning medium in the cleaning zone of the cleaning medium circulation tank.

[0014] Furthermore, the end of the media return pipe is located below the middle of the turbid zone of the cleaning media circulation tank, and a basket filter is provided on the media return pipe.

[0015] Furthermore, the bottom of the cleaning medium circulation tank has a conical structure.

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

[0017] The silicon steel strip cleaning circulation system provided by this utility model features a partitioned design for the cleaning medium circulation tank. After cleaning the strip in the clean zone, the cleaning medium is gravity-fed back to the turbid zone, where it is purified by the circulation filtration component before re-entering the clean zone. This fully utilizes the activity of the cleaning medium, improves the cleaning effect, and reduces the consumption of the cleaning medium. Furthermore, a heating component is installed to heat the cleaning medium in the clean zone before cleaning the strip, further optimizing the cleaning effect.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the silicon steel strip cleaning and circulation system in an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Steel strip; 2. Online cleaning tank; 3. Superheated water pipeline; 4. Cleaning medium circulation tank; 5. Cleaning circulation pump; 6. Medium conveying pipeline; 7. Clean zone; 8. Turbid zone; 9. Steam heating pipeline; 10. Magnetic filter pump; 11. Short-circuit pipeline; 12. Magnetic filter; 13. Medium return pipeline; 14. Basket filter. Detailed Implementation

[0021] 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 scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, abutting connections, or integral connections. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] like Figure 1As shown, this embodiment provides a silicon steel strip cleaning and circulation system, including an online cleaning tank 2 and a cleaning medium circulation tank 4. The cleaning medium circulation tank 4 is divided into a clear zone 7 and a turbid zone 8 by a partition. The outlet of the clear zone 7 is connected to the inlet of the online cleaning tank 2 through a medium conveying pipe 6. A cleaning circulation pump 5 is provided on the medium conveying pipe 6. The outlet of the online cleaning tank 2 is connected to the turbid zone 8 through a medium return pipe 13. A circulation filter assembly for circulating and filtering the cleaning medium inside the cleaning medium circulation tank 4 is connected to the cleaning medium circulation tank 4. A heating assembly for heating the cleaning medium inside the cleaning medium circulation tank 4 is connected to the clear zone 7 of the cleaning medium circulation tank 4.

[0026] The online cleaning tank 2 can be at least one of the following: alkaline washing tank, alkaline brushing tank, electrolytic cleaning tank, water brushing tank, water rinsing tank, etc. The cleaning medium can be alkaline solution, degreasing agent, rinsing water, etc., selected according to actual needs.

[0027] During operation, the cleaning medium in the clean zone 7 of the cleaning medium circulation tank 4 is pumped to the online cleaning tank 2 by the cleaning circulation pump 5 to clean the surface of the strip steel 1 running in the online cleaning tank 2. After cleaning, the cleaning medium flows back to the turbid zone 8 in the cleaning medium circulation tank 4 through the medium return pipe 13. At the same time, the cleaning medium returning from the turbid zone 8 is filtered and purified by the circulation filter assembly before entering the clean zone. This cycle is repeated to achieve the reuse of the cleaning medium. The filtered cleaning medium can ensure its activity and cleaning effect, reducing the consumption of cleaning medium by the unit. At the same time, the cleaning medium in the clean zone 7 of the cleaning medium circulation tank 4 is heated by the heating assembly, so that the cleaning medium is heated before being pumped to the online cleaning tank 2, thereby improving the cleaning effect of the cleaning medium on the strip steel 1.

[0028] Preferably, the cleaning medium in the online cleaning tank 2 is designed to enter the turbid zone 8 of the cleaning medium circulation tank 4 by gravity reflux, thereby reducing the energy consumption of the unit. Specifically, the medium reflux pipe 13 extends vertically into the turbid zone 8 of the cleaning medium circulation tank 4. Preferably, the end of the medium reflux pipe 13 is located in the area below the middle of the turbid zone 8 of the cleaning medium circulation tank 4, so as to prevent the refluxed cleaning medium from entering the clean zone 7.

[0029] Furthermore, in order to ensure the purification effect of the returned cleaning medium, a basket filter 14 can be installed in the medium return pipe 13 to pre-filter the cleaning medium returning to the turbid zone, and then filter and purify it through the circulating filter assembly. This not only improves the purification effect of the cleaning medium, but also reduces the filtration load of the circulating filter assembly.

[0030] Optionally, a mechanical defoaming device can be installed on the top of the cleaning medium circulation tank 4 to defoam the cleaning medium returning to the turbid zone 8, thereby further improving the filtration and purification effect of the subsequent circulating filter components on the returning cleaning medium.

[0031] The bottom of the cleaning medium circulation tank 4 is designed to be conical, preferably a double-conical bottom structure, that is, the clear zone 7 and the turbid zone 8 of the cleaning medium circulation tank 4 are both conical bottom structures, which facilitates the sedimentation of solid substances in the cleaning medium in the cleaning medium circulation tank 4 and further improves the purification effect of the cleaning medium.

[0032] In one specific embodiment, the circulating filtration assembly includes a magnetic filter pump 10 and a magnetic filter 12. The suction port of the magnetic filter pump 10 is connected to the clear zone 7 and the turbid zone 8 of the cleaning medium circulation tank 4 via a pipe. The outlet of the magnetic filter pump 10 is connected to the inlet of the magnetic filter 12, and the outlet of the magnetic filter 12 is connected to the clear zone 7 of the cleaning medium circulation tank 4. Preferably, the suction port of the magnetic filter pump 10 is connected to the bottom of the clear zone 7 and the turbid zone 8, and the outlet of the magnetic filter 12 is connected to the top of the clear zone 7.

[0033] In an optimized configuration, the outlet of the magnetic filter pump 10 is connected to a short-circuit pipe 11, the end of which extends into the cleaning zone 7 of the cleaning medium circulation tank 4, in order to protect the magnetic filter pump 10 and maintain the stability of the filtration and purification process of the circulating filter assembly.

[0034] In the optimized implementation, both the clean zone 7 and the turbid zone 8 of the cleaning medium circulation tank 4 are equipped with level gauges. The cleaning circulation pump 5 is interlocked with the level of the clean zone 7, and the magnetic filter pump 10 is interlocked with the level of the turbid zone 8. The flow rates of the cleaning circulation pump 5 and the magnetic filter pump 10 are automatically adjusted by level detection, which improves the automation level of the system operation.

[0035] In one specific embodiment, the heating assembly includes a superheated water pipe 3, which penetrates the cleaning zone 7 of the cleaning medium circulation tank 4. The superheated water exchanges heat with the cleaning medium in the cleaning zone 7 through the superheated water pipe 3, thereby heating the cleaning medium. The heated cleaning medium is then used to clean the strip steel 1. Optimally, the superheated water pipe 3 has multiple branch pipes within the cleaning zone 7 of the cleaning medium circulation tank 4 to improve the uniformity of heating of the cleaning medium within the cleaning zone 7.

[0036] In the optimized implementation, the heating component further includes a steam heating pipe 9, the steam outlet end of which extends from the bottom of the cleaning medium circulation tank 4 into the cleaning zone 7; in this embodiment, two heating modes are provided: superheated water and steam injection. Superheated water heating is used during normal production, while steam supplementary heating is used when the furnace is not started or in an emergency, which improves the stability of unit operation.

[0037] Furthermore, both the superheated water pipeline 3 and the steam heating pipeline 9 are equipped with regulating valves, and the cleaning zone 7 of the cleaning medium circulation tank 4 is equipped with a thermometer. The opening degree of the regulating valve 9 is interlocked with the temperature of the cleaning medium in the cleaning zone 7 of the cleaning medium circulation tank 4. It can be adjusted and controlled using PID regulation mode, which improves the automation level of system operation.

[0038] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A silicon steel strip cleaning and circulation system, characterized in that: The system includes an online cleaning tank and a cleaning medium circulation tank. The cleaning medium circulation tank is divided into a clear zone and a turbid zone by a partition. The outlet of the clear zone is connected to the inlet of the online cleaning tank through a medium delivery pipeline. A cleaning circulation pump is installed on the medium delivery pipeline. The outlet of the online cleaning tank is connected to the turbid zone through a medium return pipeline. A circulation filter assembly is connected to the cleaning medium circulation tank to circulate and filter the cleaning medium inside. The clear zone of the cleaning medium circulation tank is connected to a heating assembly to heat the cleaning medium inside.

2. The silicon steel strip cleaning and circulation system as described in claim 1, characterized in that: The circulating filtration assembly includes a magnetic filter pump and a magnetic filter. The suction port of the magnetic filter pump is connected to the clear zone and the turbid zone of the cleaning medium circulation tank through a pipe. The outlet of the magnetic filter pump is connected to the inlet of the magnetic filter. The outlet of the magnetic filter is connected to the clear zone of the cleaning medium circulation tank.

3. The silicon steel strip cleaning and circulation system as described in claim 2, characterized in that: The outlet of the magnetic filter pump is connected to a short-circuit pipe, the end of which extends into the cleaning zone of the cleaning medium circulation tank.

4. The silicon steel strip cleaning and circulation system as described in claim 2, characterized in that: The cleaning medium circulation tank is equipped with level gauges in both the clear zone and the turbid zone. The cleaning circulation pump is interlocked with the level in the clear zone, and the magnetic filter pump is interlocked with the level in the turbid zone.

5. The silicon steel strip cleaning and circulation system as described in claim 1, characterized in that: The heating assembly includes an ultra-hot water pipe that runs through the cleaning zone of the cleaning medium circulation tank.

6. The silicon steel strip cleaning and circulation system as described in claim 5, characterized in that: The superheated water pipeline has multiple branch pipelines within the cleaning zone of the cleaning medium circulation tank.

7. The silicon steel strip cleaning and circulation system as described in claim 5, characterized in that: The heating assembly also includes a steam heating pipeline, the steam outlet end of which extends from the bottom of the cleaning medium circulation tank into the cleaning area.

8. The silicon steel strip cleaning and circulation system as described in claim 7, characterized in that: Both the superheated water pipeline and the steam heating pipeline are equipped with regulating valves, and the cleaning zone of the cleaning medium circulation tank is equipped with a thermometer. The opening degree of the regulating valve is interlocked with the temperature of the cleaning medium in the cleaning zone of the cleaning medium circulation tank.

9. The silicon steel strip cleaning and circulation system as described in claim 1, characterized in that: The end of the media return pipe is located below the middle of the turbid zone of the cleaning media circulation tank, and a basket filter is provided on the media return pipe.

10. The silicon steel strip cleaning and circulation system as described in claim 1, characterized in that: The bottom of the cleaning medium circulation tank has a conical structure.

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