Degreasing system for ultrathin silicon steel strip

Abstract

The degreasing system comprises a degreasing tank set, a vacuumizing device and a distillation device, and the degreasing tank set is used for conducting degreasing cleaning on the steel strip; the degreasing tank group comprises a main degreasing tank containing a cleaning medium and is used for cleaning and passivating a steel belt; the vacuumizing device is used for forming a vacuum environment in the distillation device; and the distillation device is used for separating and removing grease and impurities in the degreasing tank group. According to the device, the same degreasing tank is adopted for degreasing cleaning and passivating of the steel belt, the distillation device is matched for distilling the cleaning medium in the vacuum environment, then grease and impurities are separated and removed, a passivating tank does not need to be independently arranged for passivating the steel belt, and therefore the overall occupied space can be greatly reduced, and the production efficiency is improved. And energy consumption and waste liquid yield are reduced.

Description

Technical Field

[0001] This application relates to the field of steel strip cleaning technology, specifically to a degreasing system for ultra-thin silicon steel strip. Background Technology

[0002] Strip degreasing and cleaning refers to the process of removing contaminants such as grease, oil, lubricant, and cutting fluid from the surface of strip using physical or chemical methods. This is a critical pretreatment step before strip processing (such as rolling, plating, welding, and painting), directly affecting the quality of subsequent processes and the performance of the finished product. Traditional cleaning processes typically require a passivation tank after cleaning the ultra-thin silicon steel strip to prevent rusting, resulting in a larger overall size and greater space occupation, thus significantly increasing factory space requirements. Utility Model Content

[0003] This application provides a degreasing system for ultra-thin silicon steel strips to solve the problems of large overall volume and large space occupation in the prior art, and adopts the following technical solution:

[0004] A degreasing system for ultra-thin silicon steel strip includes a degreasing tank assembly and a distillation device, wherein the degreasing tank assembly is used to degrease and clean the steel strip;

[0005] The degreasing tank assembly includes a main degreasing tank containing a cleaning medium, used for cleaning and passivating the steel strip;

[0006] A vacuum device is used to create a vacuum environment within the distillation apparatus to reduce the flash point of the cleaning medium.

[0007] The distillation apparatus is used to separate and remove grease and impurities from the degreasing tank group.

[0008] Preferably, the degreasing tank assembly further includes a pre-degreasing tank containing degreasing liquid, the pre-degreasing tank being located at the front end of the main degreasing tank for pre-cleaning the steel strip.

[0009] Preferably, the distillation apparatus includes a distillation kettle, and a condensation recovery device and a slag discharge device connected to the distillation kettle, wherein the vacuum device is used to create a vacuum environment inside the distillation kettle.

[0010] Preferably, it also includes a drying device located at the end of the main degreasing tank, used to dry the cleaned steel strip.

[0011] Preferably, it also includes an automatic adding device, which is connected to the main degreasing tank and is used to provide passivation solution into the main degreasing tank to ensure the concentration of passivation solution.

[0012] More preferably, both the main degreasing tank and the pre-degreasing tank are provided with at least one set of extrusion rollers, which are located at the end of the steel strip that exits the degreasing liquid and are used to remove the degreasing liquid from the surface of the steel strip.

[0013] More preferably, both the main degreasing tank and the pre-degreasing tank are equipped with guide rollers, which are used to guide the direction of the steel strip and increase the contact time with the degreasing liquid.

[0014] The beneficial effects of this application are as follows:

[0015] This application uses the same degreasing tank to degrease and clean the steel strip, while simultaneously passivating it. In conjunction with the distillation device, the cleaning medium is distilled in a vacuum environment, thereby separating and removing grease and impurities. There is no need to set up a separate passivation tank for passivation treatment of the steel strip, which can greatly reduce the overall space occupied, energy consumption and waste liquid production.

[0016] By performing two degreasing and cleaning processes on the steel strip using the main degreasing tank and the pre-degreasing tank, the amount of residual oil on the surface of the steel strip can be reduced, thereby improving the cleaning quality of the steel strip. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a simplified schematic diagram of this application.

[0019] In the picture:

[0020] 00. Steel belt; 10. Main degreasing tank; 20. Pre-degreasing tank; 30. Drying device; 40. Extrusion roller; 50. Guide roller; 60. Distillation device; 70. Vacuuming device; 80. Automatic adding device. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] See Figures 1 to 2 Further explanation of this application:

[0023] The degreasing system for ultra-thin silicon steel strip includes a degreasing tank assembly, a vacuum device 70, and a distillation device 60. The degreasing tank assembly is used to degrease and clean the steel strip 00. The degreasing tank assembly includes a main degreasing tank 10 containing a cleaning medium for cleaning and passivating the steel strip 00. The cleaning medium consists of a degreasing liquid and a passivating liquid. The concentration of the passivating liquid in the main degreasing tank can be 0.3%-0.5%, which can be set according to requirements. The vacuum device 70 is used to create a vacuum environment in the distillation device to lower the flash point of the degreasing liquid. The vacuum device can be a vacuum pump. The distillation device 60 is used to separate and remove grease from the degreasing tank assembly. By using the same degreasing tank to degrease, clean, and passivate the steel strip 00, and by using the distillation device 60 to distill the cleaning medium in a vacuum environment to separate and remove grease and impurities, there is no need to set up a separate passivation tank for passivation treatment of the steel strip 00, thereby greatly reducing the overall space occupied, energy consumption, and waste liquid production.

[0024] In this embodiment, the degreasing tank assembly further includes a pre-degreasing tank 20 containing a cleaning medium. The pre-degreasing tank 20 is located at the front end of the main degreasing tank 10 and is used to pre-clean the steel strip 00. The cleaning medium in the pre-degreasing tank 20 is a degreasing liquid. After the steel strip 00 undergoes pre-degreasing cleaning in the pre-degreasing tank 20, it enters the main degreasing tank 10 for secondary degreasing and cleaning, while simultaneously undergoing passivation treatment. This further improves the degreasing quality of the steel strip 00, reduces the amount of residual oil on the surface of the steel strip 00, and enhances the cleaning quality.

[0025] In this embodiment, both the main degreasing tank 10 and the pre-degreasing tank 20 are equipped with a distillation device 60. The vacuum device 70 can evacuate the distillation device 60 separately to reduce the flash point of the cleaning medium in a vacuum environment. Of course, the distillation device 60 can also be evacuated separately by the independent vacuum device 70.

[0026] The distillation apparatus includes a distillation kettle, a condensation recovery device, and a slag discharge device connected to the distillation kettle. The vacuum device is used to create a vacuum environment inside the distillation kettle. The cleaning medium is drawn into the distillation kettle and heated for distillation. The distilled cleaning medium is condensed and recovered by the condensation recovery device, while the grease and impurities remaining in the distillation kettle are recovered by the slag discharge device.

[0027] As the steel strip 00 moves out of the degreasing liquid, its surface will be covered with degreasing liquid. Both the main degreasing tank 10 and the pre-degreasing tank 20 are equipped with at least one set of squeeze rollers 40. These squeeze rollers 40 are located at the end of the steel strip 00 that has exited the degreasing liquid and are used to remove the degreasing liquid from its surface. The squeeze rollers 40 remove the degreasing liquid from the surface of the steel strip 00.

[0028] Combination Figure 2 In some embodiments, both the main degreasing tank 10 and the pre-degreasing tank 20 are equipped with guide rollers 50. The guide rollers are used to guide the direction of the steel strip 00 and the contact time with the degreasing liquid. Specifically, the guide rollers 50 can guide the steel strip 00 into a serpentine distribution to increase the contact time between the steel strip 00 and the degreasing liquid, thereby improving the degreasing and cleaning quality.

[0029] To prevent degreasing solution residue from remaining on the surface of the steel strip 00 after cleaning, a drying device 30 is also included. The drying device 30 is located at the end of the pre-degreasing tank and is used to dry the cleaned steel strip 00. After degreasing and cleaning in the degreasing tank assembly, the steel strip 00 enters the drying device 30, where residual degreasing solution is dried from its surface. The drying device 30 can be equipped with a heating element to heat and dry the steel strip 00, and a fan can be used to accelerate airflow and improve drying efficiency.

[0030] Combination Figure 2 In some embodiments, the drying device 30 is further provided with a guide roller 50, which is used to guide the steel strip 00 in the drying device 30. The guide roller can guide the steel strip 00 to be distributed in a serpentine pattern, thereby increasing the residence time of the steel strip 00 in the drying device 30 and improving the drying efficiency.

[0031] In some embodiments, an automatic adding device 80 is further included, which is connected to the main degreasing tank 10 and is used to provide passivating solution into the main degreasing tank 10, thereby ensuring the concentration of passivating solution in the main degreasing tank 10. The concentration of passivating solution in the main degreasing tank 10 and the liquid level in the main degreasing tank 10 and / or the pre-degreasing tank 20 can be detected in real time by a detection device.

[0032] In an embodiment not shown, both the main degreasing tank 10 and the pre-degreasing tank 20 are connected to a filtration device, which is used to remove impurities from the degreasing solution. The filtration device may include a filter and a circulation pump to circulate and filter the degreasing solution in real time, reducing impurities in the degreasing solution, avoiding damage to the surface of the steel belt 00, and improving the cleaning quality.

Claims

1. A degreasing system for ultra-thin silicon steel strip, characterized in that: It includes a degreasing tank assembly and a distillation device, wherein the degreasing tank assembly is used to degrease and clean the steel strip; The degreasing tank assembly includes a main degreasing tank containing a cleaning medium, used for cleaning and passivating the steel strip; A vacuum pumping device, used to create a vacuum environment within the distillation apparatus; The distillation apparatus is used to separate and remove grease and impurities from the degreasing tank group.

2. The degreasing system for ultra-thin silicon steel strip according to claim 1, characterized in that: The degreasing tank assembly also includes a pre-degreasing tank containing degreasing liquid, which is located at the front end of the main degreasing tank and is used to pre-clean the steel strip.

3. The degreasing system for ultra-thin silicon steel strip according to claim 1 or 2, characterized in that: The distillation apparatus includes a distillation kettle, a condensation recovery device and a slag discharge device connected to the distillation kettle, and the vacuum device is used to create a vacuum environment inside the distillation kettle.

4. The degreasing system for ultra-thin silicon steel strip according to claim 1, characterized in that: It also includes a drying device, which is located at the end of the main degreasing tank and is used to dry the cleaned steel strip.

5. The degreasing system for ultra-thin silicon steel strip according to claim 1, characterized in that: It also includes an automatic addition device, which is connected to the main degreasing tank and is used to provide passivation solution into the main degreasing tank to ensure the concentration of passivation solution.

6. The degreasing system for ultra-thin silicon steel strip according to claim 2, characterized in that: Both the main degreasing tank and the pre-degreasing tank are equipped with at least one set of extrusion rollers. The extrusion rollers are located at the end of the steel strip that is detached from the degreasing liquid and are used to remove the degreasing liquid from the surface of the steel strip.

7. The degreasing system for ultra-thin silicon steel strip according to claim 2, characterized in that: Both the main degreasing tank and the pre-degreasing tank are equipped with guide rollers, which are used to guide the direction of the steel strip and increase the contact time with the degreasing liquid.

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