A stirring device for treating cobalt-containing wastewater

Abstract

The utility model belongs to wastewater treatment equipment technical field especially is a kind of stirring device for cobalt-containing wastewater treatment, including flocculation tank and the stirring shaft rotation in the flocculation tank inside, the surface of stirring shaft is equipped with stirring vane, the upside of flocculation tank is equipped with motor for driving the rotation of stirring shaft, the surface of stirring shaft is provided with dosing assembly, dosing assembly includes the dosing plate of symmetry installation on the surface of stirring shaft, the surface of dosing plate is equipped with several groups of dosing port;Dosing plate surface is equipped with multiple groups of dosing port, and synchronous rotation with stirring shaft, so that the rotation process of stirring shaft, reagent is evenly released from multiple groups of dosing port, simultaneously diffuse to wastewater whole domain with the aid of rotation centrifugal force, avoid the problem that local reagent concentration is too high or too low caused by traditional fixed dosing, ensure that reagent and wastewater whole domain evenly contact.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater treatment equipment, specifically relating to a stirring device for treating cobalt-containing wastewater. Background Technology

[0002] Existing technologies for treating cobalt-containing wastewater mainly involve adding agents such as sodium sulfide, calcium hydroxide, and chelating agents to convert cobalt ions into precipitates such as cobalt sulfide and cobalt hydroxide. These precipitates are then formed into large flocs by flocculants and finally removed through sedimentation. In the coagulation and flocculation process of water treatment, agents need to be added to the wastewater and a stirring device is required to achieve uniform mixing between the agents and the wastewater. Traditional devices mostly use side-mounted dosing pipes or independent dosing devices to add agents to the tank. The agents need to rely on stirring to diffuse into the cobalt-containing wastewater, which can easily lead to localized excessively high or low agent concentrations, resulting in excessive cobalt concentrations in the effluent. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a stirring device for treating cobalt-containing wastewater, solving the problem of uneven reagent dosing in existing devices and improving the efficiency and stability of cobalt-containing wastewater treatment.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a stirring device for treating cobalt-containing wastewater, comprising a flocculation tank and a stirring shaft rotating inside the flocculation tank, stirring blades being mounted on the surface of the stirring shaft, a motor for driving the stirring shaft to rotate being mounted on the upper side of the flocculation tank, and a dosing assembly being provided on the surface of the stirring shaft;

[0005] The dosing assembly includes a dosing plate symmetrically mounted on the surface of the stirring shaft. The surface of the dosing plate has several sets of dosing ports. The stirring shaft has radial injection holes inside, and the injection holes are connected to the multiple dosing ports through a drug delivery channel opened inside the dosing plate. A frame-shaped sealing plate is slidably connected inside the dosing plate near the drug outlet of the drug delivery channel. The frame-shaped sealing plate has a spring inside for resetting the frame-shaped sealing plate.

[0006] As a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, the cross-sectional shape of the reagent conveying channel is L-shaped. When the stirring shaft stops rotating, the spring pushes the frame-type sealing plate to reset and completely block the outlet of the reagent conveying channel.

[0007] As a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, a chemical storage tank is fixed at the top of the flocculation tank, and the discharge pipe of the chemical storage tank is connected to the injection hole inside the stirring shaft through a rotary joint.

[0008] In a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, a counterweight is slidably connected to the side of the dispensing plate away from the frame-shaped sealing plate, and the counterweight and the frame-shaped sealing plate are connected by a connecting rod.

[0009] In a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, a screw is rotatably connected inside the dispensing plate, a movable plate is screwed to one end of the screw, a sliding groove for the movable plate to move is provided inside the frame-shaped sealing plate, and the two ends of the spring abut against the movable plate and the frame-shaped sealing plate respectively.

[0010] In a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, the end of the screw away from the movable plate passes through the interior of the stirring shaft and is connected to a bevel gear disposed inside the stirring shaft. A gear disk is meshed with the surface of the bevel gear, and a rotating rod is fixedly connected inside the gear disk, and the rotating rod is rotatably connected to the interior of the stirring shaft.

[0011] In a preferred embodiment of the stirring device for treating cobalt-containing wastewater according to this utility model, the top end of the rotating rod penetrates the interior of the stirring shaft and is connected to the rotating handle located on the upper side of the rotary joint.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Multiple sets of dispensing ports are opened on the surface of the dispensing plate and rotate synchronously with the stirring shaft. This allows the agent to be evenly released from the multiple dispensing ports during the rotation of the stirring shaft. At the same time, the centrifugal force of rotation diffuses the agent throughout the wastewater, avoiding the problem of excessively high or low local agent concentration caused by traditional fixed dosing, and ensuring that the agent is evenly contacted with the wastewater throughout the entire area.

[0014] 2. Through the centrifugal linkage of counterweight, frame sealing plate and spring, the higher the stirring shaft speed, the larger the opening area of ​​the discharge port. More drugs are added during the high speed of the mixing stage to meet the requirements of rapid reaction between cobalt ions and precipitant; less drugs are added during the low speed of the flocculation stage to avoid waste of flocculant and reduce the problem of dosage imbalance in traditional fixed dosing.

[0015] 3. With the help of the adjustment structure of the rotating rod, gear set and screw, the spring preload can be adjusted according to the cobalt ion concentration in the wastewater to ensure that the dosage is suitable for different working conditions. There is no need to replace the dosing components, which improves the versatility of the device. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the flocculation tank in this utility model;

[0019] Figure 3 This is a cross-sectional view of the dispensing plate in this utility model;

[0020] Figure 4 This is a structural schematic diagram of the frame-type sealing plate and counterweight block of this utility model;

[0021] Figure 5 This utility model Figure 3 Enlarged view of point A in the middle;

[0022] In the picture:

[0023] 1. Flocculation tank; 2. Motor; 3. Dosing assembly; 31. Storage tank; 32. Rotary rod; 33. Rotary joint; 34. Dispensing plate; 35. Gear disc; 36. Bevel gear; 37. Frame-type sealing plate; 38. Counterweight; 39. Injection hole; 310. Chemical delivery channel; 311. Spring; 312. Screw; 313. Movable plate; 4. Agitator shaft; 5. Agitator blades. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-5 As shown:

[0026] A stirring device for treating cobalt-containing wastewater includes a flocculation tank 1 and a stirring shaft 4 rotating inside the flocculation tank 1. The surface of the stirring shaft 4 is equipped with stirring blades 5. A motor 2 for driving the stirring shaft 4 to rotate is installed on the upper side of the flocculation tank 1. A dosing assembly 3 is provided on the surface of the stirring shaft 4.

[0027] The dosing assembly 3 includes a dosing plate 34 symmetrically mounted on the surface of the stirring shaft 4. The surface of the dosing plate 34 has several sets of dosing ports. The stirring shaft 4 has radially opened injection holes 39. The injection holes 39 are connected to the multiple dosing ports through a drug delivery channel 310 opened inside the dosing plate 34. A frame-shaped sealing plate 37 is slidably connected inside the dosing plate 34 near the drug outlet of the drug delivery channel 310. The frame-shaped sealing plate 37 is provided with a spring 311 for resetting the frame-shaped sealing plate 37.

[0028] In this implementation plan: when treating wastewater containing cobalt ions, a precipitant is added to the wastewater, causing the cobalt ions to react with the precipitant to form insoluble precipitates. Then, a flocculant is added to the wastewater, forming large flocs, which are ultimately removed by sedimentation. When the stirring shaft 4 rotates, the counterweight 38, under the action of centrifugal force, drives the frame-shaped sealing plate 37 to slide. The inner groove of the frame-shaped sealing plate 37 connects with the agent delivery channel 310, allowing the agent to enter the dispensing port from the injection hole 39 through the agent delivery channel 310. The flocculant is evenly injected into the flocculation tank 1 in conjunction with the rotating dosing plate 34. During the mixing stage of the flocculant and the tank water, the mixing shaft 4 needs to rotate at high speed. The frame-shaped sealing plate 37 is greatly affected by centrifugal force, and the dosing port of the agent delivery channel 310 has a large opening area, allowing for the addition of more agent. When the reaction generates precipitate flocculation, the stirring shaft 4 rotates at a slower speed, the frame-shaped sealing plate 37 is less affected by centrifugal force, and the opening area of ​​the agent delivery channel 310 is smaller. This allows the dosage to be automatically adjusted according to the rotation speed of the stirring shaft 4, improving the agent utilization rate.

[0029] It should be noted that: the motor 2 is mounted on the upper support of the flocculation tank 1, and both the output end and the top of the stirring shaft 4 are equipped with transmission gear sets. Starting the motor 2 can drive the stirring shaft 4 to rotate through the gear sets, and the speed of the stirring shaft 4 can be adjusted by the frequency converter.

[0030] Furthermore;

[0031] In an optional embodiment, the cross-sectional shape of the drug delivery channel 310 is L-shaped. When the stirring shaft 4 stops rotating, the spring 311 pushes the frame-type sealing plate 37 to reset and completely block the outlet of the drug delivery channel 310, preventing drug leakage or air from entering the injection hole 39 and causing subsequent drug oxidation.

[0032] In an optional embodiment, a chemical storage tank 31 is fixed at the top of the flocculation tank 1, and the outlet pipe of the chemical storage tank 31 is connected to the injection hole 39 inside the stirring shaft 4 through a rotary joint 33. The chemicals required for treating cobalt-containing wastewater are stored in the chemical storage tank 31, and the chemicals in the tank flow to the rotary joint 33 through the outlet pipe. The rotary joint 33 can maintain a sealed state when the stirring shaft 4 rotates at high speed to prevent chemical leakage, and at the same time stably introduce the chemicals into the injection hole 39 inside the stirring shaft 4.

[0033] In an optional embodiment, a counterweight 38 is slidably connected to the side of the dispensing plate 34 away from the frame-shaped sealing plate 37, and the counterweight 38 and the frame-shaped sealing plate 37 are connected by a connecting rod. The counterweight 38 increases the influence of centrifugal force on the frame-shaped sealing plate 37, and ensures that the counterweight 38 can pull the frame-shaped sealing plate 37 to move when the stirring shaft 4 rotates.

[0034] Furthermore;

[0035] In an optional embodiment, a screw 312 is rotatably connected inside the dispensing plate 34. One end of the screw 312 is screwed to a movable plate 313. The frame-shaped sealing plate 37 has a sliding groove inside for the movement of the movable plate 313. The two ends of the spring 311 abut against the movable plate 313 and the frame-shaped sealing plate 37, respectively. The end of the screw 312 away from the movable plate 313 passes through the interior of the stirring shaft 4 and is connected to a bevel gear 36 disposed inside the stirring shaft 4. A gear disk 35 is meshed with the surface of the bevel gear 36. A rotating rod 32 is fixedly connected inside the gear disk 35 and is rotatably connected inside the stirring shaft 4.

[0036] In this implementation scheme: when stirring wastewater with different concentrations of cobalt ions, the rotating rod 32 drives the gear disk 35 to rotate, and then the bevel gear 36 meshes to drive the screw 312 to rotate. Under the limiting position of the moving groove of the frame-type sealing plate 37, the movable plate 313 moves, changing the compression of the spring 311. When the concentration of cobalt ions in the wastewater is low, the preload of the spring 311 is increased to ensure that the centrifugal force needs to overcome greater resistance to open the drug outlet, so that the amount of drug added is reduced at the same speed of the stirring shaft 4, avoiding drug waste.

[0037] In an optional embodiment, the top end of the rotating rod 32 passes through the interior of the stirring shaft 4 and is connected to a handle located on the upper side of the rotary joint 33. The handle facilitates the rotation of the rotating rod 32, and a sealing skeleton is provided between the rotating rod 32 and the rotary joint 33 to prevent the agent from seeping into the gear transmission structure.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stirring device for treating cobalt-containing wastewater, comprising a flocculation tank (1) and a stirring shaft (4) rotating inside the flocculation tank (1), wherein stirring blades (5) are mounted on the surface of the stirring shaft (4), and a motor (2) for driving the stirring shaft (4) to rotate is mounted on the upper side of the flocculation tank (1), characterized in that: The surface of the stirring shaft (4) is provided with a dosing assembly (3); The dosing assembly (3) includes a dosing plate (34) symmetrically mounted on the surface of the stirring shaft (4). The surface of the dosing plate (34) is provided with a plurality of dosing ports. The stirring shaft (4) is provided with a radial injection hole (39). The injection hole (39) is connected to the plurality of dosing ports through a drug delivery channel (310) provided inside the dosing plate (34). A frame-shaped sealing plate (37) is slidably connected to the side of the dosing plate (34) near the drug outlet of the drug delivery channel (310). The frame-shaped sealing plate (37) is provided with a spring (311) for resetting the frame-shaped sealing plate (37).

2. The stirring device for treating cobalt-containing wastewater according to claim 1, characterized in that: The cross-sectional shape of the drug delivery channel (310) is L-shaped. When the stirring shaft (4) stops rotating, the spring (311) pushes the frame-type sealing plate (37) to reset and completely block the outlet of the drug delivery channel (310).

3. The stirring device for treating cobalt-containing wastewater according to claim 1, characterized in that: The top of the flocculation tank (1) is fixed with a drug storage tank (31), and the drug outlet pipe of the drug storage tank (31) is connected to the drug injection hole (39) inside the stirring shaft (4) through a rotary joint (33).

4. The stirring device for treating cobalt-containing wastewater according to claim 3, characterized in that: A counterweight (38) is slidably connected to the side of the dispensing plate (34) away from the frame-shaped sealing plate (37), and the counterweight (38) and the frame-shaped sealing plate (37) are connected by a connecting rod.

5. The stirring device for treating cobalt-containing wastewater according to claim 4, characterized in that: The medicine dispensing plate (34) is rotatably connected to a screw (312), and a movable plate (313) is screwed to one end of the screw (312). The frame-shaped sealing plate (37) has a sliding groove for the movable plate (313) to move inside, and the two ends of the spring (311) abut against the movable plate (313) and the frame-shaped sealing plate (37) respectively.

6. The stirring device for treating cobalt-containing wastewater according to claim 5, characterized in that: The end of the screw (312) away from the movable plate (313) passes through the interior of the stirring shaft (4) and is connected to the bevel gear (36) disposed inside the stirring shaft (4). The surface of the bevel gear (36) is meshed with a gear disk (35). A rotating rod (32) is fixedly connected inside the gear disk (35), and the rotating rod (32) is rotatably connected inside the stirring shaft (4).

7. The stirring device for treating cobalt-containing wastewater according to claim 6, characterized in that: The top end of the rotating rod (32) passes through the interior of the stirring shaft (4) and is connected to the handle located on the upper side of the rotary joint (33).

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