Alkali washing device for waste acid pipeline in silicon steel pickling process

Abstract

The utility model relates to a silicon steel pickling process waste acid pipeline alkali washing device which comprises an alkali liquor circulation tank, an alkali liquor inlet pipe, an alkali liquor circulation pump, a steam heating pipe, an alkali liquor circulation inlet pipe, an alkali liquor circulation outlet pipe and a waste acid conveying pipe to be washed, the alkali liquor circulation tank is provided with the alkali liquor inlet pipe, and the outer side of the alkali liquor circulation tank is provided with the alkali liquor circulation pump. The input end of the alkali liquor circulating pump is communicated with the alkali liquor circulating tank through a pipeline, the output end of the alkali liquor circulating pump is provided with an alkali liquor circulating liquid outlet pipe, and the output end of the alkali liquor circulating liquid outlet pipe is communicated with the side, close to the input end, of the waste acid conveying pipe to be cleaned. The side, close to the output end, of the waste acid conveying pipe to be cleaned is communicated with the input end of the alkali liquor circulation liquid inlet pipe, and the output end of the alkali liquor circulation liquid inlet pipe is communicated with the alkali liquor circulation tank. The efficiency and the quality of the pickling process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali washing of waste acid pipelines, in particular to an alkali washing device for waste acid pipelines in a silicon steel pickling process. Background Art

[0002] The silicon steel production process includes pickling, cold stamping, annealing and electroplating. The acid circulation section of the pickling process uses acid to circulate and flush the silicon steel rough billets. The waste acid generated after flushing contains a large amount of silicon mud. The waste acid is transported to the acid regeneration section through pumps and pipelines for further treatment. Since the waste acid contains a large amount of silicon mud, it is very easy to cause blockage of the waste acid pipeline. Failure to discharge the waste acid in time will cause the acid tank level in the acid circulation section to be too high, forcing it to operate at a limited speed. It will also cause the silicon steel pickling to fail to meet the standards, affecting the silicon steel production rate and production quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an alkali washing device for waste acid pipelines in a silicon steel pickling process in view of the above shortcomings.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A device for alkali cleaning waste acid pipelines in a silicon steel pickling process comprises an alkali liquid circulation tank, an alkali liquid inlet pipe, an alkali liquid circulation pump, a steam heating pipe, an alkali liquid circulation inlet pipe, an alkali liquid circulation outlet pipe and a waste acid delivery pipe to be cleaned, wherein the alkali liquid circulation tank is provided with an alkali liquid inlet pipe, an alkali liquid circulation pump is provided on the outside of the alkali liquid circulation tank, the input end of the alkali liquid circulation pump is connected with the alkali liquid circulation tank through a pipe, the output end of the alkali liquid circulation pump is provided with an alkali liquid circulation outlet pipe, the output end of the alkali liquid circulation outlet pipe is connected with a side of the waste acid delivery pipe to be cleaned close to the input end, the side of the waste acid delivery pipe to be cleaned close to the output end is connected with the input end of the alkali liquid circulation inlet pipe, the output end of the alkali liquid circulation inlet pipe is connected with the alkali liquid circulation tank, and the side of the waste acid delivery pipe to be cleaned close to the output end is also connected with an emptying pipe.

[0006] A steam heating pipe is provided on the inner side of the alkali liquid circulation tank, and the input end and output end of the steam heating pipe are respectively provided with a steam inlet pipe and a steam outlet pipe, the steam inlet pipe is used to connect the output end of an external steam generating device, and the steam outlet pipe is used to connect the input end of an external steam generating device. The alkali liquid circulation tank is also provided with a water inlet pipe, and the water inlet pipe is used to transport clean water to the alkali liquid circulation tank, and the alkali liquid circulation pump transports the clean water to the waste acid delivery pipe to be cleaned through the alkali liquid circulation outlet pipe, and performs preliminary cleaning on the waste acid delivery pipe to be cleaned. The emptying pipe is used to discharge the waste water after the preliminary cleaning, and the alkali liquid inlet pipe is used to transport alkali liquid to the alkali liquid circulation tank, and the alkali liquid circulation pump is used to transport alkali liquid to the waste acid delivery pipe to be cleaned through the alkali liquid circulation outlet pipe, and performs alkali cleaning on the waste acid delivery pipe to be cleaned.

[0007] Furthermore, the steam heating tube is a PTFE nylon tube, and the steam heating tube is used to heat the alkali solution to 50-80 degrees through steam.

[0008] Furthermore, a first electrically controlled valve is provided at both the input end and the output end of the waste acid delivery pipe to be cleaned.

[0009] Furthermore, a second electrically controlled valve is provided at both the input end of the alkali solution circulation inlet pipe and the output end of the alkali solution circulation outlet pipe.

[0010] Furthermore, a third electrically controlled valve is provided at the input end of the exhaust pipe.

[0011] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0012] The utility model uses an alkali liquid circulation pump to transport the alkali liquid to the waste acid delivery pipe to be cleaned, and utilizes the chemical reaction between the alkali liquid and the acid scale to effectively remove the sediment and impurities in the pipe, thereby ensuring the smooth flow of the pipe and improving the efficiency and quality of the pickling process; the steam heating pipe can heat the alkali liquid to an appropriate temperature (50-80 degrees), thereby increasing the reaction activity of the alkali liquid and further enhancing the cleaning effect.

[0013] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0016] 1. Alkali liquid circulation tank; 2. Alkali liquid inlet pipe; 3. Alkali liquid circulation pump; 4. Steam heating pipe; 5. Alkali liquid circulation inlet pipe; 6. Alkali liquid circulation outlet pipe; 7. Waste acid conveying pipe to be cleaned; 8. Emptying pipe; 9. Steam inlet pipe; 10. Steam outlet pipe; 11. First electric control valve; 12. Second electric control valve; 13. Third electric control valve; 14. Water inlet pipe. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] like Figure 1 As shown, a alkali cleaning device for waste acid pipelines in a silicon steel pickling process comprises an alkali liquid circulation tank 1, an alkali liquid inlet pipe 2, an alkali liquid circulation pump 3, a steam heating pipe 4, an alkali liquid circulation inlet pipe 5, an alkali liquid circulation outlet pipe 6 and a waste acid conveying pipe 7 to be cleaned. The alkali liquid circulation tank 1 is provided with an alkali liquid inlet pipe 2, an alkali liquid circulation pump 3 is provided on the outside of the alkali liquid circulation tank 1, the input end of the alkali liquid circulation pump 3 is connected with the alkali liquid circulation tank 1 through a pipeline, the output end of the alkali liquid circulation pump 3 is provided with an alkali liquid circulation outlet pipe 6, the output end of the alkali liquid circulation outlet pipe 6 is connected with a side of the waste acid conveying pipe 7 to be cleaned close to the input end, the side of the waste acid conveying pipe 7 to be cleaned close to the output end is connected with the input end of the alkali liquid circulation inlet pipe 5, the output end of the alkali liquid circulation inlet pipe 5 is connected with the alkali liquid circulation tank 1, and the side of the waste acid conveying pipe 7 to be cleaned close to the output end is also connected with an emptying pipe 8,

[0020] A steam heating pipe 4 is provided on the inner side of the alkali liquid circulation tank 1, and the input end and output end of the steam heating pipe 4 are respectively provided with a steam inlet pipe 9 and a steam outlet pipe 10, the steam inlet pipe 9 is used to connect the output end of an external steam generating device, and the steam outlet pipe 10 is used to connect the input end of an external steam generating device. The alkali liquid circulation tank 1 is also provided with a water inlet pipe 14, and the water inlet pipe 14 is used to transport clean water to the alkali liquid circulation tank 1, and the alkali liquid circulation pump 3 transports the clean water to the waste acid delivery pipe 7 to be cleaned through the alkali liquid circulation outlet pipe 6, and performs preliminary cleaning on the waste acid delivery pipe 7 to be cleaned. The emptying pipe 8 is used to discharge the waste water after the preliminary cleaning, the alkali liquid inlet pipe 2 is used to transport alkali liquid to the alkali liquid circulation tank 1, and the alkali liquid circulation pump 3 is used to transport alkali liquid to the waste acid delivery pipe 7 to be cleaned through the alkali liquid circulation outlet pipe 6, and performs alkali cleaning on the waste acid delivery pipe 7 to be cleaned.

[0021] As an embodiment, the steam heating tube 4 is a PTFE nylon tube, and the steam heating tube 4 is used to heat the alkali solution to 50-80 degrees through steam.

[0022] As an embodiment, a first electrically controlled valve 11 is provided at both the input end and the output end of the waste acid conveying pipe 7 to be cleaned.

[0023] As an embodiment, a second electrically controlled valve 12 is provided at both the input end of the alkali solution circulation inlet pipe 5 and the output end of the alkali solution circulation outlet pipe 6 .

[0024] As an embodiment, a third electrically controlled valve 13 is provided at the input end of the exhaust pipe 8 .

[0025] The workflow of the present invention is as follows: First, clean water is supplied to the alkali liquid circulation tank 1 through the water inlet pipe 14. Next, the alkali liquid circulation pump 3 is started, and the first electrically controlled valves 11 at both ends of the waste acid delivery pipe 7 to be cleaned and the second electrically controlled valve 12 of the alkali liquid circulation inlet pipe 5 are simultaneously closed. Clean water is then supplied to the waste acid delivery pipe 7 to be cleaned through the alkali liquid circulation outlet pipe 6, performing a preliminary cleaning of the pipe. The wastewater after the preliminary cleaning is discharged through the drain pipe 8 to an external pit for sedimentation. After the preliminary cleaning is completed, the third electrically controlled valve 13 on the drain pipe 8 is closed, and the second electrically controlled valve 12 on the alkali liquid circulation inlet pipe 5 is opened. The alkali liquid circulation pump 3 is then started again, supplying alkali liquid through the alkali liquid circulation outlet pipe 6 to the waste acid delivery pipe 7 to be cleaned, performing an alkali cleaning of the pipe. The wastewater after the alkali cleaning is then transferred to the alkali liquid circulation tank 1 through the alkali liquid circulation inlet pipe 5. During this process, the steam heating pipe 4 heats the alkali liquid to a suitable temperature of 50-80°C using steam to enhance its reactivity. After the alkali cleaning is completed, the second electrically controlled valve 12 of the alkali solution inlet pipe 2 is closed, and the electrically controlled valve on the waste acid delivery pipe 7 to be cleaned is opened to discharge the alkali solution in the waste acid delivery pipe 7 to be cleaned into the external pit. The alkali solution circulation tank 1 and pipeline are cleaned and maintained as necessary to ensure cleanliness and efficiency for the next use.

[0026] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. An alkaline washing device for waste acid pipelines in silicon steel pickling process, characterized in that: The invention comprises an alkali liquid circulation tank (1), an alkali liquid inlet pipe (2), an alkali liquid circulation pump (3), a steam heating pipe (4), an alkali liquid circulation inlet pipe (5), an alkali liquid circulation outlet pipe (6) and a waste acid delivery pipe (7) to be cleaned, wherein the alkali liquid circulation tank (1) is provided with an alkali liquid inlet pipe (2), an alkali liquid circulation pump (3) is provided outside the alkali liquid circulation tank (1), an input end of the alkali liquid circulation pump (3) is connected to the alkali liquid circulation tank (1) through a pipeline, and the alkali liquid circulation pump (3) is connected to the alkali liquid circulation tank (1) through a pipeline. ) is provided with an alkali solution circulation outlet pipe (6), the output end of the alkali solution circulation outlet pipe (6) is connected to the side of the waste acid delivery pipe (7) to be cleaned near the input end, the side of the waste acid delivery pipe (7) to be cleaned near the output end is connected to the input end of the alkali solution circulation inlet pipe (5), the output end of the alkali solution circulation inlet pipe (5) is connected to the alkali solution circulation tank (1), and the side of the waste acid delivery pipe (7) to be cleaned near the output end is also connected to an emptying pipe (8), A steam heating pipe (4) is provided on the inner side of the alkali liquid circulation tank (1), and a steam inlet pipe (9) and a steam outlet pipe (10) are provided at the input end and the output end of the steam heating pipe (4), respectively. The steam inlet pipe (9) is used to connect to the output end of an external steam generating device, and the steam outlet pipe (10) is used to connect to the input end of the external steam generating device. The alkali liquid circulation tank (1) is also provided with a water inlet pipe (14), and the water inlet pipe (14) is used to transport water to the alkali liquid circulation tank (1). Clean water, the alkali liquid circulation pump (3) transports the clean water through the alkali liquid circulation outlet pipe (6) to the waste acid delivery pipe (7) to be cleaned, and performs preliminary cleaning on the waste acid delivery pipe (7) to be cleaned. The emptying pipe (8) is used to discharge the waste water after preliminary cleaning. The alkali liquid inlet pipe (2) is used to transport alkali liquid to the alkali liquid circulation tank (1), and the alkali liquid circulation pump (3) is used to transport the alkali liquid through the alkali liquid circulation outlet pipe (6) to the waste acid delivery pipe (7) to be cleaned, and performs alkali cleaning on the waste acid delivery pipe (7) to be cleaned.

2. The alkali cleaning device for waste acid pipelines in a silicon steel pickling process according to claim 1, characterized in that: The steam heating pipe (4) is a tetrafluoroethylene nylon pipe, and the steam heating pipe (4) is used to heat the alkali solution to 50-80 degrees through steam.

3. The alkali cleaning device for waste acid pipelines in a silicon steel pickling process according to claim 1, characterized in that: The input end and the output end of the waste acid delivery pipe (7) to be cleaned are both provided with a first electrically controlled valve (11).

4. The alkali cleaning device for waste acid pipelines in a silicon steel pickling process according to claim 1, characterized in that: The input end of the alkali solution circulation inlet pipe (5) and the output end of the alkali solution circulation outlet pipe (6) are both provided with a second electrically controlled valve (12).

5. The alkali cleaning device for waste acid pipelines in a silicon steel pickling process according to claim 1, characterized in that: A third electrically controlled valve (13) is provided at the input end of the exhaust pipe (8).

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