Heavy metal waste liquid treatment device

Abstract

The utility model relates to the technical field of heavy metal waste liquid treatment, in particular to a heavy metal waste liquid treatment device which comprises a mixing box and a filtering assembly, a communicating pipe communicated with the filtering assembly is fixed to the bottom end of the mixing box, a material injection pipe is connected to the top end of the mixing box, and a stirring mechanism is installed at the top of the mixing box. Sewage and chemicals can be guided into the mixing box through the communicating pipe, the stirring mechanism can mix the sewage and the chemicals which are added into the mixing box, and the chemicals deposited at the bottom end of the mixing box can be lifted upwards through the lifting assembly. The purpose of effective mixing work can be achieved in cooperation with the stirring mechanism, the situation of insufficient mixing is avoided, and the mixed sewage is guided into the filtering assembly through the communicating pipe to be filtered and separated.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy metal waste liquid treatment technical field, specifically a heavy metal waste liquid treatment device. BACKGROUND

[0002] In the field of industrial wastewater treatment, the removal of heavy metal pollutants is an important issue of environmental protection. As the mainstream process for treating heavy metal waste liquid, chemical precipitation method usually forms insoluble precipitates by adding sodium sulfide, sodium hydroxide and other chemical reagents into the reaction vessel. The existing treatment device mostly adopts mechanical stirring structure, and vortex mixing is carried out by setting stirring paddle on the top of the reaction tank.

[0003] However, in actual operation, it is found that because the density of most precipitating reagents is significantly greater than that of wastewater (such as 30% sodium sulfide solution with a density of 1.28g / cm 3 When the reagent is injected into the stirring container, it will quickly settle at the bottom of the tank under the action of gravity. The radial flow field generated by the traditional stirrer cannot penetrate the high-concentration reagent accumulation layer at the bottom, resulting in three significant problems: the contact area between the reagent and the waste liquid is limited, the effective reaction area is concentrated near the stirring paddle, the sediment at the bottom forms a "dead zone", and the stirring time needs to be continuously extended to meet the reaction requirements, and the residual unreacted reagent will increase the difficulty of subsequent sludge treatment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a heavy metal waste liquid treatment device to solve the problems in the above background technology.

[0005] The technical scheme of the utility model is: a heavy metal waste liquid treatment device, comprising a mixing box and a filter assembly, the bottom end of the mixing box is fixed with a communication pipe in communication with the filter assembly, the top end of the mixing box is connected with a material injection pipe, the top of the mixing box is installed with a stirring mechanism, and the bottom end of the stirring mechanism is fixed with a lifting assembly for lifting materials.

[0006] The above components achieve the following effects: the sewage and reagents can be introduced into the mixing box through the communication pipe, the sewage and reagents added into the mixing box can be mixed by the stirring mechanism, the reagents deposited at the bottom end of the mixing box can be lifted upwards by the lifting assembly, and the effective mixing purpose can be achieved by cooperating with the stirring mechanism, so that the insufficient mixing situation is avoided, and the mixed sewage is introduced into the filter assembly for filtering and separating work through the communication pipe.

[0007] Preferably, the stirring mechanism comprises a driving motor fixed on the top of the mixing box, an output shaft of the driving motor is fixed with a rotating shaft located in the mixing box, a plurality of stirring rods are fixed on the outside of the rotating shaft, stirring blades are fixed on the ends of the stirring rods away from the rotating shaft, the stirring blades are composed of two intersecting oval pieces, and the lifting assembly is fixed on the bottom end of the rotating shaft.

[0008] The above components achieve the effect that the stirring rods and the stirring blades on the rotating shaft can be rotated by the driving motor, and the stirring rods and the stirring blades can be used to mix the medicament and the sewage.

[0009] Preferably, the lifting assembly comprises a spiral blade fixed on the bottom end of the rotating shaft, the spiral blade is externally sleeved with a guide pipe fixed on the inner wall of the bottom of the mixing box, and a flow guide opening is formed in the bottom end of the guide pipe.

[0010] The above components achieve the effect that the spiral blade can be rotated under the driving of the rotating shaft, and the sewage and the medicament at the bottom end of the mixing box can be lifted from the flow guide opening to the top end of the guide pipe and collide with the stirring rods by cooperating with the guide pipe, so that the mixing effect is improved.

[0011] Preferably, the filtering assembly comprises a filtering box, a flow guide pipe connected with the communication pipe is fixed in the bottom end of the filtering box, a filter plate located in the filtering box is externally sleeved with the flow guide pipe, a sewage discharge pipe is connected with the top end of the filtering box, and a water discharge element is connected with one side of the bottom end of the filtering box.

[0012] The above components achieve the effect that the sewage discharged from the communication pipe can be guided into the top end of the filtering box through the flow guide pipe, the precipitate in the sewage can be accumulated on the top of the filter plate, the filtered sewage can be discharged from the water discharge element, and the sewage discharge pipe can be externally connected with a sewage pump to perform the sewage discharge work.

[0013] Preferably, the water discharge element comprises a water discharge pipe connected with the filtering box, and a water pump is connected with the water discharge pipe.

[0014] The above components achieve the effect that the water discharge work can be performed by cooperating with the water discharge pipe through the water pump.

[0015] Compared with the prior art, the heavy metal waste liquid treatment device has the following improvements and advantages:

[0016] Firstly, the sewage and the medicament can be guided into the mixing box through the communication pipe, the stirring mechanism can perform the mixing work on the sewage and the medicament added into the mixing box, the lifting assembly can lift the medicament deposited at the bottom end of the mixing box upwards, the stirring mechanism can realize the effective mixing work purpose, the insufficient mixing condition can be avoided, and the mixed sewage can be guided into the filtering assembly through the communication pipe to perform the filtering and separating work.

[0017] Secondly, the spiral blade can rotate under the driving of the rotating shaft, and the mixed sewage at the bottom end of the mixing box and the reagent can be lifted from the flow guide opening to the top end of the material guide pipe and collide with the stirring rod in cooperation with the material guide pipe, so that the mixing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be explained further in combination with the drawings and examples:

[0019] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;

[0020] Fig. 2 It is the cross section three-dimensional structure schematic diagram of the mixing box in the utility model;

[0021] Fig. 3 It is the cross section three-dimensional structure schematic diagram of the filter box in the utility model.

[0022] Explanation of reference signs:

[0023] 1, mixing box;2, stirring mechanism;21, drive motor;22, rotating shaft;23, stirring blade;24, stirring rod;3, material injection pipe;4, communication pipe;5, filter box;6, drainage part;7, sewage pipe;8, lifting assembly;81, material guide pipe;82, flow guide opening;83, spiral blade;9, flow guide pipe;10, filter plate. DETAILED DESCRIPTION

[0024] The utility model will be explained further in combination with the drawings and examples:

[0025] The utility model discloses a kind of heavy metal waste liquid treatment devices by improvement, and the technical scheme of the utility model is:

[0026] In the embodiment of the utility model, as Figs. 1-3As shown, a heavy metal waste liquid treatment device, including mixing box 1 and filter assembly, the bottom end of mixing box 1 is fixed with the communication pipe 4 in communication with the filter assembly, the top end of mixing box 1 is connected with the injection pipe 3, the top of mixing box 1 is installed with stirring mechanism 2, stirring mechanism 2 includes drive motor 21 fixed on the top of mixing box 1, the output shaft of drive motor 21 is fixed with the rotating shaft 22 located in the mixing box 1, the outer side of rotating shaft 22 is fixed with a plurality of stirring rods 24, the end of stirring rod 24 away from rotating shaft 22 is fixed with stirring blade 23, stirring blade 23 is composed of two intersecting oval pieces, lifting assembly 8 is fixed at the bottom end of rotating shaft 22, drive motor 21 can drive rotating shaft 22 on the stirring rod 24 and stirring blade 23 to rotate, the stirring rod 24 and stirring blade 23 can be used to mix the reagent and sewage, the bottom end of stirring mechanism 2 is fixed with lifting assembly 8 for lifting material, lifting assembly 8 includes spiral blade 83 fixed at the bottom end of rotating shaft 22, the outer part of spiral blade 83 is sleeved with guide pipe 81 fixed on the inner wall of the bottom of mixing box 1, the bottom end of guide pipe 81 is provided with flow guide opening 82, spiral blade 83 can rotate under the driving of rotating shaft 22, cooperating with guide pipe 81 can lift the sewage and reagent at the bottom end of mixing box 1 from flow guide opening 82 to the top end of guide pipe 81 and collide with stirring rod 24, the filter assembly includes filter box 5, the bottom end of filter box 5 is fixed with flow guide pipe 9 connected with communication pipe 4, the outer part of flow guide pipe 9 is sleeved with filter plate 10 located in filter box 5, the top end of filter box 5 is connected with sewage discharge pipe 7, one side of the bottom end of filter box 5 is connected with drainage device 6, the sewage discharged from communication pipe 4 can be guided into the top end of filter box 5 through flow guide pipe 9, the sediment in the sewage is accumulated on the top of filter plate 10, the filtered sewage is discharged from drainage device 6, sewage discharge pipe 7 can be connected with sewage pump for sewage discharge work, drainage device 6 includes drainage pipe connected with filter box 5, the drainage pump is connected with the drainage pipe, the drainage pump can cooperate with the drainage pipe for drainage work.

[0027] The working principle of the heavy metal waste liquid treatment device is as follows: through the communication pipe 4, the sewage and the reagent can be introduced into the mixing box 1, the drive motor 21 can drive the stirring rod 24 and the stirring blade 23 on the rotating shaft 22 to rotate, the stirring rod 24 and the stirring blade 23 can be used to mix the reagent and the sewage, and the spiral blade 83 can rotate under the driving of the rotating shaft 22, cooperating with the guide pipe 81 can lift the sewage and the reagent at the bottom end of the mixing box 1 from the flow guide opening 82 to the top end of the guide pipe 81 and collide with the stirring rod 24, realizing the purpose of effective mixing, avoiding the situation of insufficient mixing, the flow guide pipe 9 can guide the sewage discharged from the communication pipe 4 into the top end of the filter box 5, the sediment in the sewage is accumulated on the top of the filter plate 10, the filtered sewage is discharged from the drainage device 6, the sewage discharge pipe 7 can be connected with the sewage pump for sewage discharge work.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy metal waste liquid treatment device, comprising a mixing box (1) and a filter assembly, a communication pipe (4) in communication with the filter assembly is fixed at the bottom end of the mixing box (1), characterized in that: The mixing box (1) top end is connected with the injection pipe (3), the mixing box (1) top is equipped with the stirring mechanism (2), the stirring mechanism (2) bottom end is fixed with the lifting assembly (8) for lifting material, the stirring mechanism (2) includes the drive motor (21) fixed in the mixing box (1) top, the output shaft of drive motor (21) is fixed with the rotating shaft (22) in the mixing box (1), the rotating shaft (22) outside is fixed with a plurality of stirring rods (24), the stirring rod (24) is fixed with the stirring blade (23) away from the rotating shaft (22) one end, the stirring blade (23) is composed of two intersecting oval pieces, the lifting assembly (8) is fixed in the rotating shaft (22) bottom end, the lifting assembly (8) includes the spiral blade (83) fixed in the rotating shaft (22) bottom end, the spiral blade (83) outside is sleeved with the guide pipe (81) fixed on the inner wall of the mixing box (1) bottom, the guide pipe (81) bottom end is provided with the flow guide opening (82).

2. A device for the treatment of heavy metal waste solutions as claimed in claim 1, characterised in that: The filter assembly includes a filter box (5), the filter box (5) bottom end inside is fixed with the flow guide pipe (9) connected with the communication pipe (4), the flow guide pipe (9) outside is sleeved with the filter plate (10) located in the filter box (5), the filter box (5) top end is connected with the blowdown pipe (7), the filter box (5) bottom end one side is connected with the drainage (6).

3. A heavy metal waste liquid treatment device according to claim 2, characterized in that: The drainage (6) includes the drainage pipe connected with the filter box (5), and the drainage pipe is connected with a drainage pump.

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