Alkali mist absorption device for cold rolled steel production

Abstract

The utility model belongs to the technical field of waste gas treatment, and discloses an alkali mist absorption device for cold rolled steel production, which comprises a bottom plate provided with moving wheels, a console provided with a plug and a bottom cavity formed in the bottom plate, a moving cavity is formed in the bottom cavity in a sliding manner, and a support plate is mounted on the side surface of the moving cavity. A telescopic cylinder is mounted on the bottom plate, a cylinder is mounted at the input end of the moving cavity, a mounting cylinder is rotatably mounted on the cylinder, supports are mounted on the two sides of the outer wall of the mounting cylinder in a hinged mode, the supports are connected with an air suction hood, and an air pipe is connected between the air suction hood and the mounting cylinder; the bottom plate is provided with a sucking pump and a neutralization chamber, and the neutralization chamber is provided with an overflow pipe and a liquid adding opening with a cover; the bottom plate is provided with a step, the bottom plate is connected with a cart through the step, the cart is provided with a bolt at the step, a waste liquid box is installed on the cart, the waste liquid box is provided with an insertion hole, and the waste liquid box is provided with a discharge outlet.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, specifically relating to an alkaline mist absorption device for cold-rolled steel production. Background Technology

[0002] Cold-rolled strip steel requires degreasing before annealing, typically using alkaline cleaning agents (such as NaOH solution) to remove surface grease and impurities. During this process, heating or spraying the alkaline solution can easily generate alkaline mist. This alkaline mist is highly corrosive, accelerating the oxidation and corrosion of the rolling mill body, electrical control systems, and steel structural components of the plant, significantly shortening equipment lifespan and increasing the frequency of spare parts replacement. Alkaline mist contains highly alkaline particles such as sodium hydroxide, which, when inhaled, can easily cause respiratory burns, chronic bronchitis, and other occupational diseases. Long-term exposure can also lead to conjunctival congestion, skin ulcers, and other health damage. Therefore, it is necessary to absorb the alkaline mist.

[0003] The applicant found that current methods for alkali mist absorption mostly involve air pumps combined with absorption hoods, which are effective and inexpensive. However, the absorbed alkali mist is often directly discharged into the wastewater treatment pond. The absorbed alkali mist wastewater still contains high concentrations of alkaline substances such as sodium hydroxide. Direct discharge disrupts the pH balance of the wastewater treatment system, causing the neutralization tank to overload. This necessitates frequent testing, replacement, and adjustment of the neutralization tank, which is relatively troublesome. Therefore, improvements are needed. Furthermore, there is the issue of fixed-point use. In practice, alkali mist absorption devices on production lines that are not used for extended periods are essentially useless, while those on frequently operating production lines experience frequent malfunctions due to high-intensity operation. Moreover, continuous use on frequently operating production lines reduces the absorption capacity of these devices, leading to incomplete alkali mist absorption and its dispersion. Utility Model Content

[0004] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide an alkali mist absorption device for cold-rolled steel production.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] An alkali mist absorption device for cold-rolled steel production includes a base plate equipped with movable wheels, a control console with a plug mounted on the base plate, a bottom cavity mounted on the base plate, a movable cavity slidably mounted on the bottom cavity, a support plate mounted on the side of the movable cavity, a telescopic cylinder mounted on the base plate, the output end of the telescopic cylinder connected to the base plate, a cylinder mounted on the input end of the movable cavity, an installation cylinder rotatably mounted on the cylinder, brackets hinged to both sides of the outer wall of the installation cylinder, an air suction hood connected to the brackets, and an air pipe connecting the air suction hood and the installation cylinder.

[0007] The base plate is equipped with an air pump and a neutralization chamber. The input end of the air pump is connected to the bottom cavity, and the output end of the air pump is connected to the neutralization chamber. The neutralization chamber is equipped with an overflow pipe and a liquid inlet with a cover.

[0008] The base plate has a step, and a trolley is connected to the base plate through the step. The trolley has a pin at the step, and a waste liquid tank is installed on the trolley. The waste liquid tank has an insertion hole, the position and specification of which correspond to the overflow pipe. The waste liquid tank has a discharge port.

[0009] Furthermore, the base plate is integrally connected to a towing port, a design that facilitates connection and movement by tools such as tractors.

[0010] Furthermore, both the telescopic cylinder and the air pump are controlled by the control console. This design enables electrical control and makes adjustment effortless and efficient.

[0011] Furthermore, the cylinder is equipped with a locking screw, the output end of which contacts the mounting cylinder. This design allows the locking screw to enhance the positional fixation of the mounting cylinder after the angle of the mounting cylinder has been adjusted.

[0012] Furthermore, the waste liquid tank is equipped with a level gauge. This design facilitates observation of the liquid level inside the waste liquid tank, allowing for proper emptying and disposal.

[0013] The beneficial effects of using this utility model are as follows:

[0014] By adopting the structural design of this utility model, the alkali mist is first neutralized by the liquid in the neutralization chamber before being directly emitted, so that the liquid poured into the neutralization tank afterward has a smaller impact on the neutralization tank.

[0015] The structural design and the design of the casters in this utility model make the absorption device easy to move. When not in use, it can be moved to a frequently used area for auxiliary use, or it can directly replace the device that has been running for a long time, thereby ensuring the service life and effectiveness of the absorption device.

[0016] The structural design of this utility model, with its waste liquid tank, allows for continuous production after a period of use without stopping the machine. Simply remove the trolley, empty the liquid from the waste liquid tank, and production can continue, ensuring the production cycle time. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of an embodiment of an alkali mist absorption device for cold-rolled steel production according to the present invention;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of an alkali mist absorption device for cold-rolled steel production according to the present invention;

[0020] The symbols for the main components are explained below:

[0021] 1. Moving wheel; 2. Base plate; 3. Plug; 4. Control console; 5. Bottom cavity; 6. Moving cavity; 7. Support plate; 8. Telescopic cylinder; 9. Cylinder; 10. Mounting cylinder; 11. Bracket; 12. Suction hood; 13. Air pipe; 14. Air pump; 15. Neutralization chamber; 16. Overflow pipe; 17. Liquid inlet with cover; 18. Step; 19. Trolley; 20. Pin; 21. Waste liquid tank; 22. Insertion hole; 23. Traction port; 24. Locking screw; 25. Liquid level gauge; 26. Discharge port. Detailed Implementation

[0022] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2 As shown, the present invention provides an alkaline mist absorption device for cold-rolled steel production, comprising a base plate 2 with movable wheels 1, a control console 4 with a plug 3 mounted on the base plate 2, a bottom cavity 5 mounted on the base plate 2, a movable cavity 6 slidably mounted on the bottom cavity 5, a support plate 7 mounted on the side of the movable cavity 6, a telescopic cylinder 8 mounted on the base plate 2, the output end of the telescopic cylinder 8 connected to the base plate 2, a cylinder 9 mounted on the input end of the movable cavity 6, an installation cylinder 10 rotatably mounted on the cylinder 9, brackets 11 hinged to both sides of the outer wall of the installation cylinder 10, a suction hood 12 connected to the brackets 11, and an air pipe 13 connecting the suction hood 12 and the installation cylinder 10.

[0024] The base plate 2 is equipped with a vacuum pump 14 and a neutralization chamber 15. The input end of the vacuum pump 14 is connected to the bottom cavity 5, and the output end of the vacuum pump 14 is connected to the neutralization chamber 15. The neutralization chamber 15 is equipped with an overflow pipe 16 and a liquid inlet 17 with a cover.

[0025] The base plate 2 is provided with a step 18. The base plate 2 is connected to a trolley 19 via the step 18. The trolley 19 is provided with a pin 20 at the step 18. A waste liquid tank 21 is installed on the trolley 19. The waste liquid tank 21 is provided with a socket 22. The position and specifications of the socket 22 correspond to the overflow pipe 16. The waste liquid tank 21 is provided with a discharge port 26.

[0026] In this implementation case, when using an alkali mist absorption device for cold-rolled steel production, the base plate 2 can be easily moved to the required position by the moving wheels 1, that is, the entire absorption device can be moved to the required position. The advantage of this is that it can be replaced with an absorption device that has been used continuously for a long time, preventing damage to the equipment due to long-term operation. It can also set up multiple absorption devices in one place to enhance the absorption effect of alkali mist. In addition, setting up multiple absorption devices in one place can also reduce the power consumption of the absorption device to a certain extent and ensure its service life.

[0027] The entire absorption device is powered by the plug 3 set in the control panel 4. The operation of the telescopic cylinder 8 drives the moving chamber 6 to change its height position to adapt to the usage requirements of different height positions. The operation of the suction pump 14 ensures the absorption capacity of the alkaline mist of the absorption device. The alkaline mist enters the mounting cylinder 10 from the suction hood 12 and passes through the cylinder 9, the moving chamber 6, the bottom chamber 5 and the suction pump 14 in sequence before entering the neutralization chamber 15. It should be noted that the structure of the mounting cylinder 10 rotating on the cylinder 9 allows the suction hood 12 to rotate around the cylinder 9 as the axis. The hinged installation method of the bracket 11 allows the suction hood 12 to be angled at the hinge point of the bracket 11, thereby adapting to the usage requirements of different angles. Furthermore, a damping bearing can be installed at the hinge position of the bracket 11 to prevent the suction hood 12 from changing its angle due to its own weight during use.

[0028] Alkali mist enters neutralization chamber 15 and is neutralized by the liquid inside. Preferably, the alkali mist enters from the bottom side of neutralization chamber 15, and a one-way valve is provided at the inlet to prevent liquid backflow. Gas enters from the bottom to ensure thorough neutralization. The neutralizing liquid can be, but is not limited to, hydrochloric acid or sulfuric acid. After a period of use, as the amount of alkali mist absorbed increases, the level of the neutralizing liquid rises and flows from overflow pipe 16 into the connected waste liquid tank 21. However, this will not affect the normal operation of the absorption device. When there is too much liquid in the waste liquid tank 21, it will directly... Remove the pin 20, push the trolley 19, and pour the liquid in the waste liquid tank 21 on it into the wastewater treatment system. It should be noted that the liquid in the waste liquid tank 21 has already been treated once by the liquid in the neutralization chamber 15, so it is unlikely to affect the neutralization tank or wastewater treatment system when it enters the subsequent neutralization tank or wastewater treatment system. Moreover, the normal operation of the absorption device will not be affected when the trolley 19 is detached, ensuring the production cycle. After the waste liquid tank 21 is tilted, the trolley 19 and the backing plate 2 can be reconnected.

[0029] Preferably, the base plate 2 is integrally connected with the towing port 23. This design facilitates the connection and movement of tools such as towing vehicles. In fact, measures to facilitate the movement of the base plate 2 can also be considered depending on the specific circumstances.

[0030] It is preferred that both the telescopic cylinder 8 and the vacuum pump 14 are controlled by the control console 4. This design enables electrical control and makes adjustment labor-saving and efficient. In fact, the control method of the telescopic cylinder 8 and the vacuum pump 14 can also be considered according to the specific situation. It should be noted that the technology of using the control console to control electrical equipment such as telescopic cylinders and vacuum pumps is already mature in the existing technology.

[0031] Preferably, the cylinder 9 is equipped with a locking screw 24, the output end of which contacts the mounting cylinder 10. With this design, after the angle of the mounting cylinder 10 is adjusted, the locking screw 24 can be used to strengthen the position fixation of the mounting cylinder 10. In fact, measures to reinforce the angle of the cylinder 9 can also be considered depending on the specific situation.

[0032] Preferably, the waste liquid tank 21 is equipped with a level gauge 25. This design makes it easy to observe the liquid level inside the waste liquid tank 21 and then empty and discharge it. In fact, liquid level monitoring measures for the waste liquid tank 21 can also be considered according to specific circumstances.

[0033] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An alkali mist absorption device for cold-rolled steel production, comprising a base plate (2) equipped with casters (1), wherein the base plate (2) is equipped with a control console (4) with a plug (3), characterized in that: The base plate (2) is equipped with a bottom cavity (5), the bottom cavity (5) is slidably equipped with a movable cavity (6), the movable cavity (6) is equipped with a support plate (7) on its side, the base plate (2) is equipped with a telescopic cylinder (8), the movable cavity (6) is equipped with a cylinder (9) at its input end, the cylinder (9) is rotatably equipped with an installation cylinder (10), the installation cylinder (10) is hinged to both sides of its outer wall with a bracket (11), the bracket (11) is connected to an air suction hood (12), and an air pipe (13) is connected between the air suction hood (12) and the installation cylinder (10); The base plate (2) is equipped with a vacuum pump (14) and a neutralization chamber (15), the neutralization chamber (15) being provided with an overflow pipe (16) and a liquid inlet with a cover (17); The base plate (2) is provided with a step (18), and a trolley (19) is connected to the base plate (2) through the step (18). The trolley (19) is provided with a pin (20) at the step (18). A waste liquid tank (21) is installed on the trolley (19). The waste liquid tank (21) is provided with a socket (22) and a discharge port (26).

2. The alkali mist absorption device for cold-rolled steel production according to claim 1, characterized in that: The base plate (2) is integrally connected to the traction port (23).

3. The alkali mist absorption device for cold-rolled steel production according to claim 2, characterized in that: Both the telescopic cylinder (8) and the vacuum pump (14) are controlled by the control console (4).

4. The alkali mist absorption device for cold-rolled steel production according to claim 3, characterized in that: The cylinder (9) is fitted with a locking screw (24), the output end of which contacts the mounting cylinder (10).

5. The alkali mist absorption device for cold-rolled steel production according to claim 4, characterized in that: The waste liquid tank (21) is equipped with a level gauge (25).

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