A multi-stage filtering and purifying device for high-acid waste liquid

Abstract

The utility model discloses a kind of high-acid waste liquid multistage filtration purification treatment devices, including processing jar, water inlet being arranged at the upper end of processing jar one side and drain outlet being arranged at the lower end of processing jar, the inner chamber upper end of processing jar is provided with conical partition, the upper portion of conical partition forms neutralization cavity, and the lower portion forms filter cavity, filter assembly is arranged in the filter cavity, stirring assembly is arranged in the neutralization cavity, the lower end of conical partition is provided with drain, the inboard of drain is provided with sealing plug;The lower end of drain is provided with centrifugal release component for driving sealing plug to move down in linkage with stirring assembly. The high-acid waste liquid multistage filtration purification treatment device, by integrating neutralization and filtration purification in a processing jar, and upper end stirring is fully neutralized, and the lower filtration purification is small in size, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multi-stage filtration and purification treatment device for high-acid waste liquid. Background Technology

[0002] In existing technologies, the treatment of highly acidic wastewater typically employs a step-by-step, discrete combination of equipment. A typical process involves pumping the wastewater into a neutralization reaction tank, where alkaline agents (such as lime slurry or liquid alkali) are added and the mixture is thoroughly stirred to adjust the pH to neutral or weakly alkaline, causing dissolved metal ions to precipitate as hydroxides. After neutralization, the mixture is transferred to a sedimentation tank or clarification tank for initial solid-liquid separation. The supernatant is then pumped to a multi-stage, series-connected filtration unit, passing sequentially through sand filters and precision filters (such as bag filters or cartridge filters) to remove suspended solids and fine particles. If the removal of dissolved organic matter or trace pollutants is required, an activated carbon adsorption tower is also necessary. The entire treatment process involves multiple independent structures or equipment modules, connected and transported via pipelines.

[0003] Traditional treatment methods involve core unit operations such as neutralization, sedimentation, multi-stage filtration, and adsorption being carried out in different independent equipment or structures. This separate equipment layout results in a large footprint for the entire system, requiring significant site space. At the same time, the cost of equipment purchase, installation, and connecting pipelines increases significantly. Liquid transfer between steps in the process requires additional pumps and intermediate storage tanks, which not only leads to high energy consumption but also results in low overall treatment efficiency due to the dispersed and poorly connected treatment stages. Furthermore, the dispersed equipment also leads to complex operation and management, requiring separate monitoring and maintenance of each unit, resulting in low system integration, difficulty in automation control, and more potential leak points and malfunctions.

[0004] Therefore, it is necessary to propose a multi-stage filtration and purification treatment device for high-acid waste liquid to solve the above problems. Utility Model Content

[0005] The main purpose of this invention is to provide a multi-stage filtration and purification treatment device for high-acid waste liquid, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A multi-stage filtration and purification treatment device for high-acid waste liquid includes a treatment tank, an inlet located on one side of the upper end of the treatment tank, and a drain located at the lower end of the treatment tank. A conical baffle is provided at the upper end of the inner cavity of the treatment tank. A neutralization chamber is formed above the conical baffle, and a filtration chamber is formed below the conical baffle. A filtration assembly is provided in the filtration chamber, and a stirring assembly is provided in the neutralization chamber. A discharge port is provided at the lower end of the conical baffle, and a sealing plug is provided on the inner side of the discharge port.

[0008] The lower end of the outlet is provided with a centrifugal release component that is linked to the stirring assembly and is used to drive the sealing plug to move downward.

[0009] Preferably, the stirring assembly includes a stirring shaft rotatably disposed in the middle of the neutralization cavity, stirring blades are provided on the side wall of the stirring shaft, and a drive source for driving the stirring shaft to rotate is provided at the upper end of the processing tank.

[0010] Preferably, the centrifugal release assembly includes a one-way rotating shaft rotatably mounted at the bottom of the stirring shaft via a one-way bearing, with the lower end of the one-way rotating shaft extending through the sealing plug to below the outlet. A hollow shell is fixedly mounted at the lower end of the one-way rotating shaft, and a sliding cavity is provided around the hollow shell. A drive plate is vertically and movably mounted inside the sliding cavity. An inclined guide groove is provided on the side wall of the drive plate. A traction arm corresponding to the drive plate is radially and movably connected to the side wall of the hollow shell. A guide block is provided at one end of the traction arm and movably guided by the guide groove. A traction column extending above the hollow shell is provided at the top of the drive plate, and the upper end of the traction column is rotatably connected to the bottom periphery of the sealing plug via a bearing.

[0011] Preferably, a bearing is embedded in the bottom periphery of the sealing plug, and the upper ends of the plurality of traction columns are fixed on the outer or inner ring of the bearing.

[0012] Preferably, the guide block and the traction arm are rotatably connected.

[0013] Preferably, a counterweight is provided at the end of the traction arm away from the hollow shell.

[0014] Preferably, the sealing plug has a through hole in the middle, and the lower end of the one-way rotating shaft extends downward through the through hole.

[0015] Preferably, a vertical guide pin is fixed to the bottom of the sealing plug, a convex ring is fixed to the lower periphery of the sealing plug, the convex ring is movably sleeved on the outside of the guide pin, and an elastic element is sleeved on the lower periphery of the guide pin.

[0016] Preferably, the filtration assembly includes a coarse filter plate disposed at the upper end of the inner cavity of the filtration chamber, a fine filter plate disposed below the coarse filter plate, and an activated carbon filter layer disposed below the fine filter plate.

[0017] Preferably, the lower end of the stirring shaft extends below the coarse filter plate and is provided with stirring blades corresponding to the top of the conical partition, and the stirring shaft and the coarse filter plate are rotatably connected by bearings.

[0018] Compared with the prior art, this utility model provides a multi-stage filtration and purification treatment device for high-acid waste liquid, which has the following beneficial effects:

[0019] This multi-stage filtration and purification device for high-acid wastewater integrates neutralization and filtration purification into a single treatment tank. The upper part is stirred for thorough neutralization, while the lower part is filtered and purified. It is compact, easy to use, and the centrifugal release component linked to the stirring assembly can maintain only the rotation of the stirring shaft during neutralization. After neutralization, the stirring shaft can reverse to drive the rotation of the centrifugal release component, thereby using centrifugal force to automatically open the sealing plug, facilitating the discharge of wastewater for filtration and also facilitating the rotation of the stirring blades, thus avoiding clogging of the coarse and fine filter plates. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the hollow shell and outlet of this utility model;

[0023] Figure 4 This is a structural diagram of the hollow shell, one-way rotating shaft, sealing plug, and outlet of this utility model in their disassembled state.

[0024] In the diagram: 1. Treatment tank; 2. Inlet; 3. Outlet; 4. Drive source; 5. Neutralization chamber; 6. Filter chamber; 7. Coarse filter plate; 8. Fine filter plate; 9. Activated carbon filter layer; 10. Conical baffle; 11. Stirring shaft; 12. Stirring blade; 13. Hollow shell; 14. Outlet; 15. Agitator blade; 16. One-way rotating shaft; 17. Sealing plug; 18. Traction arm; 19. Counterweight; 20. Convex ring; 21. Through hole; 22. Guide pin; 23. Elastic element; 24. Drive plate; 25. Guide groove; 26. Guide block; 27. Sliding chamber; 28. Traction column. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1-4As shown, a multi-stage filtration and purification treatment device for high-acid waste liquid includes a treatment tank 1, an inlet 2 located on one side of the upper end of the treatment tank 1, and a drain outlet 3 located at the lower end of the treatment tank 1. A conical baffle 10 is provided at the upper end of the inner cavity of the treatment tank 1. A neutralization cavity 5 is formed above the conical baffle 10, and a filtration cavity 6 is formed below the conical baffle 10. A filtration assembly is provided in the filtration cavity 6. The filtration assembly includes a coarse filter plate 7 located at the upper end of the inner cavity of the filtration cavity 6, a fine filter plate 8 located below the coarse filter plate 7, and an activated carbon filter layer 9 located below the fine filter plate 8. A stirring assembly is provided in the neutralization cavity 5. The stirring assembly includes a stirring shaft 11 rotatably located in the middle of the neutralization cavity 5. Stirring blades 12 are provided on the side wall of the stirring shaft 11. A drive source 4 for driving the stirring shaft 11 to rotate is provided at the upper end of the treatment tank 1. The drive source 4 is preferably a geared motor. A drain outlet 14 is provided at the lower end of the conical baffle 10. A sealing plug 17 is provided on the inner side of the drain outlet 14.

[0027] Furthermore, a centrifugal release assembly is provided at the lower end of the outlet 14, which is linked to the stirring assembly and used to drive the sealing plug 17 to move downward. The centrifugal release assembly includes a one-way rotating shaft 16 rotatably mounted at the bottom of the stirring shaft 11 via a one-way bearing. Specifically, a one-way bearing is embedded at the bottom of the stirring shaft 11, the upper end of the one-way rotating shaft 16 is fixed to the inner wall of the one-way bearing, and the lower end of the one-way rotating shaft 16 extends through the sealing plug 17 to the lower part of the outlet 14. Specifically, a through hole 21 is provided in the middle of the sealing plug 17, and the lower end of the one-way rotating shaft 16 extends downward through the through hole 21. A hollow shell 13 is fixedly provided at the lower end of the one-way rotating shaft 16, and a sliding cavity 27 is provided around the hollow shell 13. A drive plate 24 is vertically and movably mounted inside the sliding cavity 27, and an inclined guide groove 25 is provided on the side wall of the drive plate 24. A radially movably connected part corresponding to the drive plate 24 is provided on the side wall of the hollow shell 13. The traction arm 18 has a counterweight 19 at one end away from the hollow shell 13, and a guide block 26 at the other end that is movably connected to the guide groove 25. The guide block 26 and the traction arm 18 are rotatably connected. The top of the drive plate 24 has a traction column 28 extending above the hollow shell 13, and the upper end of the traction column 28 is rotatably connected to the bottom periphery of the sealing plug 17 through a bearing. Specifically, the bottom periphery of the sealing plug 17 is embedded with a bearing, and the upper ends of multiple traction columns 28 are fixed on the outer or inner ring of the bearing. In order to facilitate the reset of the sealing plug 17 and increase its stability, a vertical guide pin 22 is fixed at the bottom of the sealing plug 17. A convex ring 20 is fixed at the lower periphery of the sealing plug 17. The convex ring 20 is movably sleeved on the outside of the guide pin 22, and an elastic element 23 is sleeved on the lower periphery of the guide pin 22. The elastic element 23 is preferably a spring.

[0028] In order to agitate the top of the fine filter plate 8, an agitator blade 15 corresponding to the top of the conical baffle 10 is provided at the lower end of the agitator shaft 11 extending below the coarse filter plate 7, and the agitator shaft 11 and the coarse filter plate 7 are rotatably connected by bearings.

[0029] It should be noted that this utility model is a multi-stage filtration and purification treatment device for high-acid wastewater. In the initial state, the sealing plug 17 is located inside the outlet 14 and is in a sealed state. The guide block 26 is located at the lower end of the guide groove 25. Wastewater is added into the neutralization chamber 5 through the inlet 2. Then, the drive source 4 is controlled to drive the stirring shaft 11 to rotate. The stirring shaft 11 drives the stirring blades 12 to rotate and stir. Alkaline agents are added for thorough neutralization. Since the one-way rotating shaft 16 is connected to the stirring shaft 11 through a one-way bearing, during neutralization, the stirring shaft 11 rotates relative to the one-way rotating shaft 16. The one-way rotating shaft 16 remains stationary due to the resistance of the inner wall of the through hole 21 and the resistance of the hollow shell 13 below. After neutralization, the drive source 4 reverses to reverse the direction of the stirring shaft 11, thus causing the stirring shaft 11 to rotate in the opposite direction. The unidirectional rotating shaft 16 rotates synchronously, causing the hollow shell 13 to rotate as well. Under the action of centrifugal force, the counterweight 19 and the traction arm 18 move outward, and the guide block 26 is moved outward. Under the action of the guide groove 25, the drive plate 24 moves downward. The drive plate 24 drives the sealing plug 17 to move downward through the traction column 28. The guide pin 22 guides the flow. The guide pin 22 has a "T" shaped cross section, which causes the elastic element 23 to contract. The upper end of the sealing plug 17 separates from the outlet 14, and the wastewater is discharged. Then, the wastewater is filtered and purified sequentially through the coarse filter plate 7, the fine filter plate 8, and the activated carbon filter layer 9. When the unidirectional rotating shaft 16 rotates, it also drives the stirring blade 15 to rotate. The stirring blade 15 stirs the top of the fine filter plate 8, and the traction arm 18 and the counterweight 19 stir the top of the coarse filter plate 7, preventing impurities from depositing and covering the coarse filter plate 7 and the fine filter plate 8, thus avoiding blockage.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration and purification treatment device for high-acid waste liquid, comprising a treatment tank (1), an inlet (2) disposed on one side of the upper end of the treatment tank (1), and a drain outlet (3) disposed at the lower end of the treatment tank (1), characterized in that: The upper end of the inner cavity of the processing tank (1) is provided with a conical baffle (10), a neutralization cavity (5) is formed above the conical baffle (10), and a filter cavity (6) is formed below the baffle. A filter assembly is provided in the filter cavity (6), and a stirring assembly is provided in the neutralization cavity (5). A drain port (14) is provided at the lower end of the conical baffle (10), and a sealing plug (17) is provided on the inner side of the drain port (14). The lower end of the outlet (14) is provided with a centrifugal release component that is linked to the stirring assembly and is used to drive the sealing plug (17) to move downward.

2. The multi-stage filtration and purification device for high-acid wastewater according to claim 1, characterized in that: The stirring assembly includes a stirring shaft (11) rotatably disposed in the middle of the neutralization cavity (5), and stirring blades (12) are provided on the side wall of the stirring shaft (11). A drive source (4) for driving the stirring shaft (11) to rotate is provided at the upper end of the processing tank (1).

3. The multi-stage filtration and purification device for high-acid wastewater according to claim 2, characterized in that: The centrifugal release assembly includes a one-way rotating shaft (16) rotatably mounted at the bottom of the stirring shaft (11) via a one-way bearing. The lower end of the one-way rotating shaft (16) extends through a sealing plug (17) to below the outlet (14). A hollow shell (13) is fixedly mounted at the lower end of the one-way rotating shaft (16). A sliding cavity (27) is provided around the hollow shell (13). A drive plate (24) is vertically and movably mounted inside the sliding cavity (27). The side wall of the hollow shell (13) is provided with an inclined guide groove (25). The side wall of the hollow shell (13) is radially movably connected with a traction arm (18) corresponding to the drive plate (24). One end of the traction arm (18) is provided with a guide block (26) that is movably guided and connected to the guide groove (25). The top of the drive plate (24) is provided with a traction column (28) extending to the top of the hollow shell (13), and the upper end of the traction column (28) is rotatably connected to the bottom periphery of the sealing plug (17) through a bearing.

4. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: The bottom periphery of the sealing plug (17) is fitted with a bearing, and the upper ends of the plurality of traction columns (28) are fixed on the outer or inner ring of the bearing.

5. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: The guide block (26) and the traction arm (18) are rotatably connected.

6. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: A counterweight (19) is provided at the end of the traction arm (18) away from the hollow shell (13).

7. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: The sealing plug (17) has a through hole (21) in the middle, and the lower end of the one-way rotating shaft (16) extends downward through the through hole (21).

8. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: The bottom of the sealing plug (17) is fixed with a vertical guide pin (22), and a convex ring (20) is fixed on the lower periphery of the sealing plug (17). The convex ring (20) is movably sleeved on the outside of the guide pin (22), and an elastic element (23) is sleeved on the lower periphery of the guide pin (22).

9. The multi-stage filtration and purification device for high-acid wastewater according to claim 3, characterized in that: The filter assembly includes a coarse filter plate (7) disposed at the upper end of the inner cavity of the filter chamber (6), a fine filter plate (8) disposed below the coarse filter plate (7), and an activated carbon filter layer (9) disposed below the fine filter plate (8).

10. The multi-stage filtration and purification device for high-acid wastewater according to claim 9, characterized in that: The lower end of the stirring shaft (11) extends below the coarse filter plate (7) and is provided with stirring blades (15) corresponding to the top of the conical partition (10), and the stirring shaft (11) and the coarse filter plate (7) are rotatably connected by bearings.

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