Contaminated acid pool desilting device and using method thereof

Abstract

The invention discloses a waste acid pool desilting device and a using method thereof. The waste acid pool desilting device comprises a waste acid pool; the waste acid pump is mounted at the top of the waste acid pool; the cavity is fixedly connected to the center of the bottom of the waste acid pool, and at least part of the cavity is exposed out of the waste acid pool; one end of the cylindrical cavity is movably connected into the cavity, one end of the cylindrical cavity is driven by a driving mechanism to move up and down, and the top of the cylindrical cavity is open; the limiting block is fixedly connected to the surface of the cylindrical cavity and located in the cavity; one end of each branch pipe is communicated with the peripheral surface of the upper part of the cylindrical cavity; the first cleaning block is mounted at the other end of the branch pipe and is in contact with the inner wall of the waste acid pool; the bypass pipeline is arranged on the side wall of the waste acid pool and corresponds to the first cleaning block in height. The device has the beneficial effects that the cleaning process is automatically carried out, manual intervention is not needed, the dredging effect is good, and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of sulfur pyrite acid making, and particularly to a device for dredging a waste acid pond and a method for using the same. Background Art

[0002] In the sulfur pyrite acid making industry, the flue gas entering the purification section usually contains a large amount of dust. Especially in a system with poor dust collection effect of the dust collection device, a large amount of dust in the flue gas enters the purification system. In the purification system, with the circulating washing of dilute acid, the dust in the flue gas continuously accumulates in the dilute acid. When the dust accumulates to a certain extent, it is necessary to discharge the waste acid at the bottom in the form of regular waste acid discharge. The discharged waste acid enters the waste acid pond and is transported to the subsequent treatment device through a waste acid pump. Since the sludge content in the discharged waste acid is relatively high, it is easy to form sedimentation at the bottom and around the waste acid pond. After sedimentation, the capacity of the waste acid pond is greatly reduced. Therefore, it is necessary to frequently clean the sediment at the bottom of the waste acid pond. Usually, the upper waste acid in the waste acid pond is first pumped away, and the sludge at the bottom is removed by excavator or manual cleaning. The method of using an excavator to dig is easy to damage the anti-corrosion layer at the bottom and around the pond body, and the cleaning is not thorough enough; the method of manual cleaning is inefficient and easy to damage the physical health of the cleaning personnel. The sediment removed by these two methods needs to be transported to a special storage by engineering vehicles, and it is easy to affect the road and the surrounding environment during the loading or transportation process, resulting in an unsatisfactory dredging method.

[0003] For example, Chinese Patent Publication No. CN118022536A discloses a device and method for dry regeneration of industrial sulfuric acid from waste sulfuric acid. The neutralization unit therein includes an underground waste acid pond, a first neutralization pond, a second neutralization pond, a waste acid transfer pump and a neutralization pump; the first neutralization pond is respectively connected to the underground waste acid pond and the second neutralization pond.

[0004] Another example is Chinese Utility Model Patent Publication No. CN211133494U, which discloses a device for treating regenerated flue gas, including a washing tower, a tubular ashing device for conveying the regenerated flue gas to the washing tower and communicating with the washing tower, and a waste acid pond connected to the washing tower through an upper water pipe and a lower water pipe. The ashing device includes a pipe skin, a lining wrapped by the pipe skin, a plurality of steel pipes arranged inside the lining, a high-frequency heating coil wound around the outer wall of the steel pipe, and a pump connected to the upper water pipe.

[0005] Although the above two patents both involve waste acid ponds, they do not involve the treatment of removing sediment from waste acid ponds. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that there is no efficient and convenient method for dredging existing waste acid ponds. Therefore, a device for dredging a waste acid pond and a method for using the same are provided.

[0007] The technical solution of the present invention is: a device for dredging a waste acid tank, including: a waste acid tank; a waste acid pump installed on the top of the waste acid tank; a cavity fixedly connected to the center of the bottom of the waste acid tank and at least part of the cavity exposed outside the waste acid tank; a cylindrical cavity, one end of the cylindrical cavity is movably connected inside the cavity, one end of the cylindrical cavity is driven to move up and down by a driving mechanism, and the top of the cylindrical cavity is open; a limiting block fixedly connected to the surface of the cylindrical cavity and located inside the cavity; a plurality of branch pipes, one end of each of the plurality of branch pipes is communicated with the upper peripheral surface of the cylindrical cavity; a first cleaning block installed at the other end of the branch pipe and in contact with the inner wall of the waste acid tank; a bypass pipe opened on the side wall of the waste acid tank and corresponding to the height of the first cleaning block.

[0008] In the above solution, the driving mechanism includes a fluid filled in the cavity, a valve provided on the cavity; a fluid storage tank communicated with the valve through a communication pipe; a power pump connected to the communication pipe.

[0009] An improvement of the above solution is that the first cleaning block is a hollow cavity, and a plurality of liquid discharge holes are opened on the surface of the first cleaning block facing the waste acid tank.

[0010] In the above solution, the first cleaning block is arc-shaped.

[0011] A further improvement of the above solution is that a plurality of second cleaning blocks are fixedly connected to the bottom of the branch pipe.

[0012] In the above solution, the bottom of the waste acid tank is conical, and the connection between the branch pipe and the cylindrical cavity forms a certain angle so that the branch pipe is substantially parallel to the bottom of the waste acid tank.

[0013] A further improvement of the above solution is that the waste acid pump is communicated with the bypass pipe through a connecting pipe.

[0014] A further improvement of the above solution is that a valve is connected to the connecting pipe.

[0015] The usage method of the waste acid tank dredging device includes the following steps: when dredging is required, the waste acid pump is closed, the waste acid enters the waste acid tank from the bypass pipe, impacts the first cleaning block so that the cylindrical cavity drives the branch pipe to rotate, the first cleaning block rotates and rubs against the inner side wall of the waste acid tank, the driving mechanism drives the cylindrical cavity to descend until the branch pipe contacts the bottom of the waste acid tank, the bypass pipe is closed, the driving mechanism drives the cylindrical cavity to rise to the initial position, and this cycle can remove the accumulated silt on the inner side wall and bottom of the waste acid tank.

[0016] The beneficial effects of the present invention are as follows: Through the cooperation of the bypass pipeline and the driving mechanism, the cylindrical cavity is promoted to rotate and lift. During the process of the cylindrical cavity descending, the first cleaning block can comprehensively clean the side wall of the waste acid tank. When the cylindrical cavity descends until the branch pipe contacts the bottom of the waste acid tank, the bottom of the waste acid tank can be comprehensively cleaned. The cleaning process is automatic without manual intervention, and the dredging effect is good and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the waste acid tank dredging device of the present invention; Figure 2 is Figure 1 a schematic diagram of the cooperation of the cylindrical cavity, several branch pipes and the first cleaning block in Figure 3 is Figure 1 the schematic diagram of the use state of In the figure, 1 is the waste acid tank, 2 is the waste acid pump, 3 is the cavity, 4 is the cylindrical cavity, 5 is the limit block, 6 is the branch pipe, 7 is the first cleaning block, 8 is the bypass pipeline, 9 is the fluid storage tank, 10 is the connecting pipeline, 11 is the power pump, 12 is the liquid discharge hole, and 13 is the second cleaning block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1-3 shown, the waste acid tank dredging device includes: a waste acid tank 1; a waste acid pump 2, which is installed on the top of the waste acid tank; a cavity 3, which is fixedly connected to the center of the bottom of the waste acid tank and at least part of the cavity is exposed outside the waste acid tank. The upper half of the cavity is inside the waste acid tank, and the lower half of the cavity is outside the waste acid tank; a cylindrical cavity 4, one end of the cylindrical cavity is movably connected inside the cavity, one end of the cylindrical cavity is driven to move up and down by a driving mechanism, the top of the cylindrical cavity is open, and the cylindrical cavity is inside the waste acid tank; a limit block 5, which is fixedly connected to the surface of the cylindrical cavity and is inside the cavity; several branch pipes 6, one end of several of the branch pipes is communicated with the upper peripheral surface of the cylindrical cavity; a first cleaning block 7, which is installed at the other end of the branch pipe and contacts the inner wall of the waste acid tank; a bypass pipeline 8, which is opened on the side wall of the waste acid tank and corresponds to the height of the first cleaning block.

[0020] When the waste acid tank is in normal use, waste acid enters from the waste acid pump at the top. Part of the waste acid enters the cylindrical cavity and flows along the branch pipe. When the first cleaning block rotates, it will contact the inner wall of the waste acid tank to remove the sludge that may accumulate on the side wall of the lower half of the waste acid tank.

[0021] The driving mechanism includes the fluid filled in the cavity, a valve provided on the cavity; a fluid storage tank 9, which is communicated with the valve through a connecting pipe 10; a power pump 11, which is connected to the connecting pipe. When dredging, the valve is opened, and the fluid will flow from the cavity into the fluid storage tank, that is, the liquid level in the cavity drops, and the cylindrical cavity drops accordingly. When the cylindrical cavity drops to the lowest point, the power pump is started to pump the fluid in the fluid storage tank into the cavity, and the liquid level in the cavity rises to lift the cylindrical cavity to its original position.

[0022] As a preferred example of the present invention, the first cleaning block is a hollow cavity, and a number of liquid discharge holes 12 are provided on the side of the first cleaning block facing the waste acid tank. When the cylindrical cavity rotates, the waste acid in it will be ejected from the liquid discharge holes due to centrifugal force to wash the sludge on the side wall of the waste acid tank, improving the dredging effect. When the cylindrical cavity drops to the lowest point, the branch pipe will contact the bottom of the waste acid tank to remove the sludge at the bottom.

[0023] The first cleaning block can be arc-shaped to avoid impact on the side wall of the waste acid tank during rotation. The first cleaning block is preferably made of an elastic material and can undergo a certain deformation.

[0024] As a preferred example of the present invention, a number of second cleaning blocks 13 are fixedly connected to the bottom of the branch pipe. The second cleaning blocks contact the bottom of the waste acid tank to remove the sludge at the bottom.

[0025] As a preferred example of the present invention, the bottom of the waste acid tank is conical, and the connection between the branch pipe and the cylindrical cavity forms a certain angle so that the branch pipe is substantially parallel to the bottom of the waste acid tank.

[0026] The bypass pipe can directly introduce waste acid, or the waste acid pump can be communicated with the bypass pipe through a connecting pipe. When dredging is required, there is a switching valve on the connecting pipe, and the switching valve introduces the waste acid into the bypass pipe.

[0027] The usage method of the waste acid tank dredging device includes the following steps: When dredging is required, the waste acid pump is closed, and the waste acid enters the waste acid tank from the bypass pipe, impacting the first cleaning block so that the cylindrical cavity drives the branch pipe to rotate. The first cleaning block rotates and rubs against the inner wall of the waste acid tank, and the driving mechanism drives the cylindrical cavity to drop until the branch pipe contacts the bottom of the waste acid tank. The bypass pipe is closed, and the driving mechanism drives the cylindrical cavity to rise to the initial position. The limiting block contacts the cavity to prevent the cylindrical cavity from detaching from the cavity. The bypass pipe is opened again, and so on. After the cylindrical cavity rises and drops multiple times, the sludge on the inner wall and bottom of the waste acid tank can be removed.

Claims

1. The device for dredging the contaminated acid pond is characterized in that: Comprising: An acid waste pool (1); an acid waste pump (2), which is installed on the top of the acid waste pool; a cavity (3), which is fixedly connected to the center of the bottom of the acid waste pool and at least part of the cavity is exposed outside the acid waste pool; A cylindrical cavity (4), one end of the cylindrical cavity is movably connected inside the cavity, one end of the cylindrical cavity is driven to move up and down by a driving mechanism, and the top of the cylindrical cavity is open; a limiting block (5), which is fixedly connected to the surface of the cylindrical cavity and is located inside the cavity; several branch pipes (6), one end of several branch pipes is communicated with the upper circumferential surface of the cylindrical cavity; a first cleaning block (7), which is installed at the other end of the branch pipe and contacts the inner wall of the acid waste pool; a bypass pipe (8), which is arranged on the side wall of the acid waste pool and corresponds to the height of the first cleaning block.

2. The sludge dredging device for the acid waste pond according to claim 1, wherein: The driving mechanism includes a fluid filled in the cavity, a valve, which is arranged on the cavity; a fluid storage tank (9), which is communicated with the valve through a connecting pipe (10); a power pump (11), which is connected to the connecting pipe.

3. The sludge dredging device for the contaminated acid pond according to claim 1, characterized in that: The first cleaning block is a hollow cavity, and several liquid discharge holes (12) are arranged on the surface of the first cleaning block facing the acid waste pool.

4. The sludge cleaning device for the contaminated acid pond according to claim 3, wherein: The first cleaning block is arc-shaped.

5. The sludge cleaning device for the contaminated acid pool according to claim 1, characterized in that: Several second cleaning blocks (13) are fixedly connected to the bottom of the branch pipe.

6. The sludge cleaning device for the acid waste pond according to claim 1, characterized in that: The bottom of the acid waste pool is conical, and the connection between the branch pipe and the cylindrical cavity forms a certain angle so that the branch pipe is substantially parallel to the bottom of the acid waste pool.

7. The sludge dredging device for waste acid pool according to claim 1, characterized in that: The acid waste pump is communicated with the bypass pipe through a connecting pipe.

8. The sludge cleaning device for the acid waste pond according to claim 7, characterized in that: A valve is connected to the connecting pipe.

9. The usage method of the sludge cleaning device for the contaminated acid pool according to any one of claims 1-8, characterized in that: Comprising the following steps: When dredging is required, the acid waste pump is closed, the acid waste enters the acid waste pool from the bypass pipe, impacts the first cleaning block so that the cylindrical cavity drives the branch pipe to rotate, the first cleaning block rotates and rubs against the inner side wall of the acid waste pool, the driving mechanism drives the cylindrical cavity to descend until the branch pipe contacts the bottom of the acid waste pool, the bypass pipe is closed, the driving mechanism drives the cylindrical cavity to rise to the initial position, and this process is repeated to remove the silt accumulated on the inner side wall and the bottom of the acid waste pool.

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