Potassium permanganate waste liquid treatment device

Abstract

The application provides a potassium permanganate waste liquid treatment device, which comprises a first pool body and a second pool body, the first pool body is at least two, and adjacent first pool bodies are communicated; the top of each first pool body is provided with a liquid injection assembly for uniformly sprinkling liquid below the first pool body; and the first pool body is further provided with a stirring assembly for stirring the interior of the first pool body; the second pool body is communicated with the first pool body, the second pool body is slidably provided with a filter screen plate, the top of the second pool body is provided with a lifting assembly for driving the filter screen plate to ascend or descend in the second pool body, one side of the second pool body is provided with a discharge chute, and the second pool body is further provided with a pushing assembly for pushing sundries on the filter screen plate to the discharge chute, so that the problem that the added solution cannot quickly react with potassium permanganate in the process of treating potassium permanganate waste liquid, thereby leading to low purification efficiency, is solved.

Description

Technical Field

[0001] This invention relates to the field of hazardous waste treatment technology, and in particular to a potassium permanganate waste liquid treatment device. Background Technology

[0002] Potassium permanganate is a strong oxidizing agent. In industrial production, such as electroplating, metallurgy, and chemical industries, a large amount of potassium permanganate waste liquid is often generated. This waste liquid contains high concentrations of potassium permanganate and other harmful substances. High concentrations of potassium permanganate have strong oxidizing properties and may cause fires or explosions. If discharged into water bodies, it will have a harmful impact on aquatic organisms and ecosystems. Therefore, potassium permanganate waste liquid needs to be purified before being discharged into the environment.

[0003] Currently, the treatment of potassium permanganate is relatively simple. Generally, potassium permanganate is diluted with water, the pH is adjusted, and then stirred to allow for a complete reaction. Sulfuric acid or sulfurous acid is then added for reduction and precipitation, and the precipitate is filtered. For example, Chinese patent CN211546066U, "A Safe Treatment and Utilization System for Waste Potassium Permanganate Reagent," uses the above steps to purify potassium permanganate solution. However, the inventors discovered during the implementation of this patent that the reaction between potassium permanganate and the added solvent is slow during the addition of water and sulfuric acid, making it unsuitable for treating large quantities of industrial-grade potassium permanganate waste liquid. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a potassium permanganate wastewater treatment device, which solves the problem of low purification efficiency caused by the inability of the added solution to react quickly with potassium permanganate during the treatment of potassium permanganate wastewater.

[0005] According to an embodiment of the present invention, a potassium permanganate waste liquid treatment device includes a first pool and a second pool. There are at least two first pools, which are connected to each other. Each first pool is provided with a liquid injection component at its top for uniformly spraying liquid downwards, and a stirring component for stirring the interior of each first pool. The second pool is connected to the first pool. A filter screen is slidably provided in the second pool. A lifting component is provided at the top of the second pool for driving the filter screen to rise or fall in the second pool. A discharge chute is provided on one side of the second pool. A pushing component is also provided in the second pool for pushing debris on the filter screen to the discharge chute.

[0006] Compared with the prior art, the present invention has the following beneficial effects: by using at least two first tanks, the liquid injection component in each first tank evenly sprays liquid into the first tank and the stirring component fully stirs it, thereby improving the mixing and reaction efficiency of potassium permanganate waste liquid and the injected liquid. The other first tank receives the potassium permanganate waste liquid delivered by the first first tank and then treats the potassium permanganate waste liquid in the first tank through the liquid injection component and the stirring component. Finally, the precipitated impurities are discharged under the filtration of the second tank, and the purified liquid in the second tank is discharged separately, thereby improving the efficiency of potassium permanganate waste liquid treatment.

[0007] Furthermore, each of the aforementioned liquid injection components includes: a first spray pipe, wherein there are multiple first spray pipes, which are connected to each other by multiple first connecting pipes and mounted on the top of the first pool body, and each first spray pipe has a liquid injection hole at its bottom.

[0008] Furthermore, it also includes a second spray pipe, which consists of multiple second spray pipes connected by multiple second connecting pipes and installed below the first spray pipe. Each second spray pipe has an injection hole at its bottom. Each first spray pipe is staggered with the second spray pipe, and each first connecting pipe is staggered with the second connecting pipe.

[0009] Furthermore, each stirring assembly includes: a rotating shaft, which is vertically and rotatably disposed in the first tank body, and a plurality of stirring blades are fixedly disposed on the outer wall of the rotating shaft, each stirring blade being inclined, and a drive motor for driving its rotation is also provided at one end of the rotating shaft.

[0010] Furthermore, each stirring blade is provided with several water passage holes.

[0011] Furthermore, a reinforcing rod is provided between every two stirring blades.

[0012] Furthermore, the lifting assembly includes: a mounting plate, wherein there are two mounting plates symmetrically arranged on the top of the second pool body, and two winding shafts are rotatably arranged between the two mounting plates. Each winding shaft has two winding reels sleeved at both ends, and one end of a pull rope is wound between each pair of winding reels. The other end of each pull rope extends vertically downward and is fixedly connected to the filter screen plate. Each winding shaft has a first motor that drives its rotation after passing through the mounting plate.

[0013] Furthermore, the pushing assembly includes: a pushing plate, a groove is provided between the inner walls of the second pool, the pushing plate is horizontally and slidably disposed in the second pool through the groove, a lead screw is rotatably disposed between the inner walls of the second pool, the lead screw passes horizontally through the pushing plate and is threadedly connected to the pushing plate, and a second motor is provided to drive the rotation of the lead screw after it passes through the second pool.

[0014] Furthermore, the pusher plate has a boss at one end facing the discharge trough that matches the size of the discharge trough. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2 This is a top view of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the stirring assembly structure according to an embodiment of the present invention.

[0018] Figure 4 This is a front view of the stirring assembly structure according to an embodiment of the present invention.

[0019] In the above attached figures: 1. First pool body; 2. Second pool body; 3. Filter screen; 4. Discharge trough; 5. First spray pipe; 6. First connecting pipe; 7. Second spray pipe; 8. Second connecting pipe; 9. Rotating shaft; 10. Stirring blade; 11. Water passage hole; 12. Reinforcing rod; 13. Mounting plate; 14. Winding shaft; 15. Winding reel; 16. First motor; 17. Pusher plate; 18. Lead screw; 19. Second motor; 20. Boss. Detailed Implementation

[0020] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1As shown in Figure 4, this embodiment of the invention proposes a potassium permanganate wastewater treatment device, including a first pool 1 and a second pool 2. There are at least two first pools 1, which are connected to each other. Each first pool 1 is provided with a liquid injection component at its top for uniformly spraying liquid downwards, and a stirring component for stirring the interior of each first pool 1. The second pool 2 is connected to the first pool 1. A filter screen 3 is slidably provided in the second pool 2. A lifting component is provided at the top of the second pool 2 to drive the filter screen 3 to rise or fall in the second pool 2. A discharge trough 4 is provided on one side of the second pool 2. A pushing component is also provided in the second pool 2 to push the debris on the filter screen 3 into the discharge trough 4. In treating potassium permanganate waste liquid, the waste liquid is first introduced into the first tank 1. Specifically, an input pipe connected to the inside of the first tank 1 can be installed on the side wall of the first tank 1, allowing the potassium permanganate waste liquid to directly enter the first tank 1. At this time, the injection component injects the required liquid. In this embodiment, there are two first tanks 1. The injection component of one of the first tanks 1 evenly sprinkles clean water into the first tank 1, thereby diluting the concentration of the potassium permanganate waste liquid. At the same time, the stirring component is activated to fully mix the clean water and potassium permanganate, achieving sufficient dilution. For the purpose of treatment, an acid or alkaline solution is added to the first tank 1 via the injection assembly for adjustment. Potassium permanganate is typically acidic, and workers can use the injection assembly to adjust its acidity or alkalinity by adding hydrogen peroxide or potassium hydroxide solutions. After the potassium permanganate in the first tank 1 has been treated, the waste potassium permanganate solution will enter another first tank 1. (Specifically, a transfer pump or valve can be installed at the connection between the first tanks 1 to open and close the connection between the first tanks 1 and between the first tank 1 and the second tank 2. In this embodiment, adjacent...) There is a height difference between the first tank 1 and the second tank 2. The injection component of the first tank 1 can spray sulfuric acid or sulfurous acid to reduce and precipitate the potassium permanganate waste liquid. The stirring component in the first tank 1 mixes and stirs the potassium permanganate waste liquid, which also accelerates the reaction. Finally, this potassium permanganate waste liquid enters the second tank 2. The filter screen 3 in the second tank 2 is initially located at the bottom of the second tank 2. The lifting component in the second tank 2 drives the filter screen 3 to rise. During the lifting process, the precipitate after the reaction of the potassium permanganate waste liquid in the second tank 2 is filtered through the filter screen. After the filter screen 3 is raised to the horizontal height of the discharge trough 4, the pushing component is activated. The pushing component pushes the sediment on the filter screen 3 into the discharge trough 4, which facilitates the centralized treatment of the sediment. Throughout the process, the injection components and stirring components in the multiple first tanks 1 work together. The uniform distribution of the injection components prevents the liquid from accumulating in one place in the potassium permanganate wastewater. The stirring components accelerate the mixing and reaction between the potassium permanganate wastewater and the injected liquid, thereby speeding up the treatment and purification efficiency of the potassium permanganate wastewater and improving the company's treatment and purification capabilities for potassium permanganate wastewater.

[0022] like Figure 3 As shown in Figure 4, further, each of the aforementioned liquid injection components includes: a first spray pipe 5, wherein there are multiple first spray pipes 5, which are connected to each other by multiple first connecting pipes 6 and are mounted on the top of the first pool body 1. Each first spray pipe 5 has an injection hole at its bottom. In this embodiment, the first spray pipe 5 is annular, and multiple first spray pipes 5 are mounted on the top of the first pool body 1. The multiple first spray pipes 5 are connected to each other by first connecting pipes 6. An external conveying device is connected to one of the first spray pipes 5 (the conveying device is not shown in the attached figure). After passing through multiple first spray pipes 5 and first connecting pipes 6, the injected liquid can be evenly discharged from the injection hole at the bottom of the first spray pipe 5, achieving the purpose of uniform spraying.

[0023] like Figure 3 As shown in Figure 4, further, it also includes a second spray pipe 7. There are multiple second spray pipes 7, which are connected by multiple second connecting pipes 8 and erected below the first spray pipe 5. Each second spray pipe 7 has a liquid injection hole at its bottom. Each first spray pipe 5 is staggered with the second spray pipe 7, and each first connecting pipe 6 is staggered with the second connecting pipe 8. In this embodiment, the second spray pipe 7 is located below the first spray pipe 5, and the first spray pipe 5 and the second spray pipe 7 are staggered. The second connecting pipe 8 is also staggered with the first connecting pipe 6. This allows clean water to be injected into the first tank 1 through the first spray pipe 5, and another solution (such as an alkaline solution of sodium hydroxide) to be injected into the first tank 1 through the second spray pipe 7. This allows for multiple processing steps of potassium permanganate waste liquid within the same first tank 1, reducing the number of first tanks 1 and saving the footprint of the device. Since either the first spray pipe 5 or the second spray pipe 7 only transports one type of liquid, it also avoids cross-contamination between liquids.

[0024] like Figure 3As shown in Figure 4, further, each stirring assembly includes: a rotating shaft 9, which is vertically and rotatably disposed within the first tank body 1. Several stirring blades 10 are fixedly disposed on the outer wall of the rotating shaft 9, each stirring blade 10 being inclined. One end of the rotating shaft is also provided with a drive motor for driving its rotation. In this embodiment, the drive motor is pre-embedded in the bottom of the first tank body 1 (not shown in the figures). The output end of the drive motor passes through the first tank body 1 and is fixedly connected to the rotating shaft 9. The output end of the drive motor is dynamically sealed to the first tank body 1. The stirring blades 10 on the rotating shaft 9 are inclined, and the forward and reverse rotation of the drive motor can lift the potassium permanganate waste liquid in the first tank body 1 from the bottom to the top of the potassium permanganate waste liquid body under the action of the stirring blades 10, or push the liquid at the top of the potassium permanganate waste liquid body to the bottom of the potassium permanganate waste liquid body, so that the potassium permanganate waste liquid in the first tank body 1 can fully react and mix with the injected liquid.

[0025] like Figure 3 As shown in Figure 4, each stirring blade 10 is further provided with several water passage holes 11. By providing water passage holes 11 on the stirring blade 10, the potassium permanganate waste liquid can be fully stirred while reducing the load on the stirring blade 10, preventing the stirring blade 10 from bending and deforming under the resistance of the potassium permanganate waste liquid, and extending the service life of the stirring blade 10.

[0026] like Figure 3 As shown in Figure 4, a reinforcing rod 12 is further provided between every two stirring blades 10. The reinforcing rod 12 increases the strength between adjacent stirring blades 10 and prevents the stirring blades 10 from bending and deforming during the stirring and mixing of potassium permanganate waste liquid.

[0027] like Figure 1 As shown in Figure 3, the lifting assembly further includes: mounting plates 13, which are two pieces symmetrically arranged on the top of the second pool 2. Two winding shafts 14 are rotatably arranged between the two mounting plates 13. Each winding shaft 14 has two winding reels 15 sleeved at both ends. One end of a pull rope is wound between each pair of winding reels 15. The other end of each pull rope extends vertically downward and is fixedly connected to the filter screen 3. One end of each winding shaft 14 passes through the mounting plate 13 and is equipped with a first motor 16 to drive its rotation. In order to facilitate the collection and treatment of sediment in the second pool 2, the first motor 16 is started during operation. The first motor 16 drives the corresponding winding shaft 14 to rotate, so that the winding shaft 14 winds the pull rope, thereby pulling the filter screen 3 up. When the filter screen 3 is at the horizontal height of the discharge trough 4, the pushing assembly is activated. The pushing assembly pushes the sediment on the filter screen 3 into the discharge trough 4, so that it is discharged to the outside for centralized treatment.

[0028] like Figure 1As shown in Figure 3, the pushing assembly further includes a pushing plate 17. A groove is provided between the inner walls of the second pool 2. The pushing plate 17 is horizontally and slidably disposed within the second pool 2 through the groove. A lead screw 18 is rotatably disposed between the inner walls of the second pool 2. The lead screw 18 passes horizontally through the pushing plate 17 and is threadedly connected to the pushing plate 17. One end of the lead screw 18 extends out of the second pool 2 and is connected to a second motor 19 that drives its rotation. During operation, the second motor 19 is started. While the second motor 19 drives the lead screw 18 to rotate, the pushing plate 17, which is threadedly connected to the lead screw, moves horizontally, pushing the sediment on the filter screen 3 towards the discharge trough 4. In this embodiment, the outer wall of the second pool 2 is provided with a collection box that communicates with the discharge trough 4. It should be noted that, in order to avoid interference between the pull rope and the pushing plate 17, the width of the pushing plate 17 can be reduced, or clearances can be provided on the inner wall of the second pool 2 or at both ends of the pushing plate 17. Preferably, a guide rod is horizontally provided inside the second pool body 2. The guide rod passes through the pusher plate 17 and is slidably connected to the pusher plate 17. The guide rod plays a guiding and stabilizing role for the pusher plate 17. Preferably, multiple mounting slots can also be opened on the side wall of the second pool body 2. A limiting block is provided in each mounting slot. The limiting block is pushed out of the mounting slot by a cylinder. When the filter screen plate 3 is raised to a predetermined position, the limiting block extends under the push of the cylinder and is located directly below the filter screen plate 3, playing an auxiliary support role for the filter screen plate 3.

[0029] like Figure 2 As shown, furthermore, the pusher plate 17 has a boss 20 at one end facing the discharge trough 4, which is adapted to the size of the discharge trough 4. The size of the boss 20 is the same as the size of the discharge trough 4, so that after the pusher plate 17 moves to the maximum stroke position, the boss 20 can enter the opening of the discharge trough 4, which can clean the sediment more thoroughly. In this embodiment, the opening of the discharge trough 4 is a downward sloping surface, which facilitates the discharge of sediment.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A potassium permanganate wastewater treatment device, characterized in that, include: The first pool (1) is at least two, and the adjacent first pools (1) are connected. Each first pool (1) is provided with a liquid injection component at the top for evenly spraying liquid downwards, and each first pool (1) is also provided with a stirring component for stirring inside. The second pool (2) is connected to the first pool (1). A filter screen plate (3) is slidably provided inside the second pool (2). A lifting component is provided at the top of the second pool (2) to drive the filter screen plate (3) to rise or fall inside the second pool (2). A discharge trough (4) is provided on one side of the second pool (2). A pushing component is also provided inside the second pool (2) to push the debris on the filter screen plate (3) into the discharge trough (4). Each injection assembly includes: a first spray pipe (5), which consists of multiple first spray pipes (5), which are circular. The multiple first spray pipes (5) are connected by multiple first connecting pipes (6) and mounted on the top of the first pool body (1). Each first spray pipe (5) has an injection hole at its bottom. It also includes a second spray pipe (7), which consists of multiple second spray pipes. The second spray pipe (7) is circular. The multiple second spray pipes (7) are connected by multiple second connecting pipes (8) and are installed below the first spray pipe (5). Each second spray pipe (7) has an injection hole at its bottom. Each first spray pipe (5) is staggered with the second spray pipe (7), and each first connecting pipe (6) is staggered with the second connecting pipe (8). The lifting assembly includes: a mounting plate (13), which consists of two plates. The two mounting plates (13) are symmetrically arranged on the top of the second pool body (2). Two winding shafts (14) are rotatably arranged between the two mounting plates (13). Two winding reels (15) are sleeved on both ends of each winding shaft (14). One end of a pull rope is wound between each pair of winding reels (15). The other end of each pull rope extends vertically downward and is fixedly connected to the filter screen plate (3). One end of each winding shaft (14) passes through the mounting plate (13) and is equipped with a first motor (16) that drives its rotation.

2. The potassium permanganate wastewater treatment device as described in claim 1, characterized in that, Each stirring assembly includes: a rotating shaft (9), which is vertically and rotatably disposed in the first tank body (1), and a plurality of stirring blades (10) are fixedly disposed on the outer wall of the rotating shaft (9), each stirring blade (10) is inclined, and a drive motor for driving its rotation is also provided at one end of the rotating shaft.

3. The potassium permanganate wastewater treatment device as described in claim 2, characterized in that: Each stirring blade (10) has several water passage holes (11).

4. A potassium permanganate wastewater treatment device as described in claim 2 or 3, characterized in that: A reinforcing rod (12) is provided between each pair of stirring blades (10).

5. The potassium permanganate wastewater treatment device as described in claim 1, characterized in that, The feeding assembly includes: a feeding plate (17), a groove is provided between the inner walls of the second pool (2), the feeding plate (17) is horizontally and slidably set in the second pool (2) through the groove, a lead screw (18) is rotatably provided between the inner walls of the second pool (2), the lead screw (18) passes horizontally through the feeding plate (17) and is threadedly connected to the feeding plate (17), and a second motor (19) is provided to drive the rotation of the lead screw (18) after it passes through the second pool (2).

6. The potassium permanganate wastewater treatment device as described in claim 5, characterized in that: The pusher plate (17) has a boss (20) at one end facing the discharge trough (4) that is adapted to the size of the discharge trough (4).

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