Cyclone separator group for high-concentration gypsum wastewater

Abstract

The utility model discloses a high-concentration gypsum wastewater cyclone separator group, which comprises a barrel, a stirring structure, a filtering structure and a cyclone structure, the bottom of the barrel is provided with a water inlet, and the side wall of the barrel is respectively provided with a filtrate outlet and a sewage outlet; the stirring structure is arranged in the cylinder body; the filtering structure is arranged between the filtrate outlet and the sewage outlet and is used for filtering water flowing to the filtrate outlet; a water inlet of the cyclone structure is communicated with the sewage outlet; according to the device, scaling in the cylinder body can be reduced, the solid-liquid separation efficiency of gypsum wastewater can be improved, and the treatment capacity of the cyclone structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-concentration gypsum wastewater treatment, and particularly relates to a high-concentration gypsum wastewater cyclone separator group. Background Art

[0002] Lithium batteries are high-performance batteries with advantages such as high energy density, long life, and light weight. However, in the production of lithium-ion batteries, since the electrolyte used contains oxidants, an oxide film will form on the surfaces of the positive and negative electrode materials of the battery. This oxide film will form a "SEI" film between the electrode and the electrolyte, but this film is sometimes contaminated by sulfur dioxide, resulting in a decline in battery performance. Therefore, when preparing lithium-ion battery materials, it is usually necessary to add desulfurized gypsum to absorb sulfur dioxide in the battery, so that the oxide film in the lithium-ion battery materials is not damaged, achieving the purpose of protecting the battery performance; thus, gypsum wastewater will be generated during the treatment of waste batteries.

[0003] The characteristics of gypsum wastewater mainly include high concentration, acidic pH value, and relatively large suspended solid particles. Since gypsum wastewater contains various pollutants, if directly discharged into the environment, it will cause serious pollution to water resources and the ecological environment. It is particularly necessary to scientifically and reasonably treat gypsum wastewater. The patent with the publication number CN105347554A provides a device for separating and reducing the quantity of lime-gypsum wet desulfurization wastewater sludge, which includes a high-efficiency cyclone precipitator, a pH adjustment tank, a coagulation reaction tank, a flocculation reaction tank, a wastewater clarification and concentration tank, a clean water neutralization and discharge tank, a paddle dryer, a desulfurized lime slurry tank, and a desulfurization tower.

[0004] In the existing treatment of gypsum wastewater, the desulfurized gypsum wastewater will enter the cyclone separator group through the feed cylinder body, and there are problems such as easy scaling and blockage, and the generated gypsum product particles are fine. The fine gypsum products make it difficult to carry out the sedimentation, filtration, and dehydration processes, and further lead to problems such as a decrease in the treatment capacity and poor separation effect. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a high-concentration gypsum wastewater cyclone separator group to solve the technical problems of the decline in the treatment capacity and poor separation effect of the separator in the existing gypsum wastewater treatment.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a high-concentration gypsum wastewater cyclone separator group, comprising: a cylinder body, a stirring structure, a filtering structure and a cyclone structure. An inlet is arranged at the bottom of the cylinder body, and a filtrate outlet and a sewage outlet are respectively arranged on the side wall thereof; the stirring structure is arranged inside the cylinder body; the filtering structure is arranged between the filtrate outlet and the sewage outlet and is used for filtering the water flowing towards the filtrate outlet; and the inlet of the cyclone structure is communicated with the sewage outlet.

[0008] In some embodiments, the cyclone structure is connected to the sewage outlet through a connecting pipe. The cross-section of the connecting pipe at the interface gradually increases from the cyclone structure to the pipe orifice direction. The interface of the connecting pipe connected to the cylinder body is a conical interface, and a valve is installed on the connecting pipe.

[0009] In some embodiments, the stirring structure includes a stirring shaft and stirring paddles. The stirring paddles are fixed at the end of the stirring shaft. The high-concentration gypsum wastewater cyclone separator group further includes a transmission member, and the transmission member is connected to the stirring shaft to drive the stirring shaft and the stirring paddles to rotate.

[0010] In some embodiments, the cylinder body is of a closed structure.

[0011] In some embodiments, the filtering structure includes a filter membrane. The filter membrane is arranged between the filtrate outlet and the sewage outlet, and its periphery is connected to the inner wall of the cylinder body.

[0012] In some embodiments, the filter membrane is arranged horizontally.

[0013] In some embodiments, the filter membrane is arranged obliquely.

[0014] In some embodiments, the position of the filtrate outlet is higher than the position of the sewage outlet.

[0015] In some embodiments, the cyclone structure includes 1-3 cyclones.

[0016] Compared with the prior art, the high-concentration gypsum wastewater cyclone separator group provided by the utility model realizes active stirring by arranging a stirring structure inside the cylinder body, enables the gypsum slurry inside the cylinder body to be in a swirling state, mixes the gypsum slurry evenly through stirring and makes small-particle gypsum enriched and grown, thereby reducing the scaling inside the cylinder body.

[0017] By setting up a filtering structure, the water flowing towards the filtrate outlet can be filtered, allowing some of the slurry to be directly filtered, increasing the concentration of the slurry inside the cylinder, improving the solid-liquid separation efficiency and throughput. The filtered water merges with the clear liquid at the upper end of the filtering structure, while the high-concentration gypsum at the lower part of the cylinder flows towards the hydrocyclone structure through the sewage outlet and undergoes secondary solid-liquid separation under the action of the hydrocyclone structure, enhancing the separation effect. By cooperating with the set filtering structure and hydrocyclone structure, on the one hand, the sewage outlet is connected to the hydrocyclone structure, which can reduce the mud content at the filtering end of the filtering structure, avoid clogging of the filtering structure. On the other hand, the filtering structure can filter out excess clear water, reduce the processing burden of the hydrocyclone, and also facilitate the enrichment and growth of small particle gypsum.

[0018] Through this design, the solid-liquid separation efficiency of gypsum wastewater can be improved, and at the same time, the processing capacity of the hydrocyclone structure can be increased. Brief Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the high-concentration gypsum wastewater hydrocyclone group provided by the embodiment of the present utility model;

[0020] Figure 2 is the structural schematic diagram when the filter membrane of the high-concentration gypsum wastewater hydrocyclone group provided by the embodiment of the present utility model is horizontally arranged;

[0021] Figure 3 is the structural schematic diagram when the filter membrane of the high-concentration gypsum wastewater hydrocyclone group provided by the embodiment of the present utility model is inclinedly arranged.

[0022] Description of the Reference Numerals:

[0023] 1. Cylinder; 11. Water inlet; 12. Filtrate outlet; 13. Sewage outlet; 2. Stirring structure; 21. Stirring shaft; 22. Stirring paddle; 3. Filtering structure; 31. Filter membrane; 4. Hydrocyclone structure; 41. Connecting pipe; 42. Conical interface. Detailed Embodiment

[0024] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further elaborates on the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In order to solve the technical problems of the decline in the throughput and poor separation effect of the separator in the treatment of gypsum wastewater, the present utility model provides a high-concentration gypsum wastewater hydrocyclone group, which can reduce the scaling inside the cylinder, improve the solid-liquid separation efficiency of gypsum wastewater, and increase the processing capacity of the hydrocyclone structure.

[0026] Please refer to Figure 1 ,Figure 1 This is a schematic diagram of the overall structure of a high-concentration gypsum wastewater cyclone separator group in an embodiment of the present utility model. The high-concentration gypsum wastewater cyclone separator group includes: a cylinder body 1, a stirring structure 2, a filtering structure 3, and a cyclone structure 4. An inlet 11 is provided at the bottom of the cylinder body 1, and a filtrate outlet 12 and a sewage outlet 13 are respectively provided on its side wall; the stirring structure 2 is arranged inside the cylinder body 1; the filtering structure 3 is arranged between the filtrate outlet 12 and the sewage outlet 13 for filtering the water flowing towards the filtrate outlet 12; the inlet 11 of the cyclone structure 4 is communicated with the sewage outlet 13.

[0027] In this solution, by arranging the stirring structure 2 inside the cylinder body 1, active stirring is realized, so that the gypsum slurry inside the cylinder body 1 is in a swirling state. Through stirring, the gypsum slurry is mixed evenly and small-particle gypsum is enriched and grown, reducing scaling inside the cylinder body 1; the gypsum slurry inside the cylinder body 1 will flow out from two outlets, namely the filtrate outlet 12 and the sewage outlet 13. The arrangement of the filtering structure 3 can filter the water flowing towards the filtrate outlet 12, enabling some slurry to be directly filtered, improving the concentration of the slurry inside the cylinder body 1, and improving the solid-liquid separation efficiency and treatment capacity. The filtered effluent converges with the clear liquid at the upper end of the filtering structure 3, while the high-concentration gypsum at the lower part of the cylinder body 1 will flow towards the cyclone structure 4 through the sewage outlet 13, and secondary solid-liquid separation is carried out under the action of the cyclone structure 4, increasing the separation effect.

[0028] In order to prevent the leakage of gypsum wastewater, in this embodiment, the cylinder body 1 is of a closed structure.

[0029] In this embodiment, the cyclone structure 4 is connected to the sewage outlet 13 through a connecting pipe 41. The cross-section of the interface of the connecting pipe 41 gradually increases from the cyclone structure 4 to the pipe orifice direction. Specifically, the interface of the connecting pipe 41 connected to the cylinder body 1 is a tapered interface 42. The tapered interface 42 facilitates the entry of the swirling medium into the cyclone and is not easily blocked, and at the same time is also convenient for dredging and cleaning; through the tapered connection, the retention and scaling of gypsum wastewater formed at the sewage outlet 13 can be reduced, and the maintenance and cleaning time can be reduced.

[0030] Furthermore, a valve (not shown in the figure) is installed on the connecting pipe 41, and the flow of gypsum slurry into the cyclone structure 4 can be controlled through the valve.

[0031] In order to realize the stirring of the gypsum slurry inside the cylinder body 1, in this embodiment, the stirring structure 2 includes a stirring shaft 21 and stirring paddles 22. The stirring shaft 21 is arranged in the middle inside the cylinder body 1, and the stirring paddles 22 are fixed to the end of the stirring shaft 21. The high-concentration gypsum wastewater cyclone separator group further includes a transmission member, and the transmission member is connected to the stirring shaft 21 to drive the stirring shaft 21 and the stirring paddles 22 to rotate, so as to mix the gypsum slurry evenly.

[0032] Preferably, in this solution, the transmission member is a motor, which is installed at the top of the cylinder body 1. The stirring paddle 22 is a propeller, and the hydrodynamic shear force and forced convection generated by the propeller are used to realize the mixing and stirring of the liquid, and a swirling flow phenomenon will occur inside the cylinder body 1.

[0033] In this embodiment, the filtering structure 3 includes a filter membrane 31, which is arranged between the filtrate outlet 12 and the sewage outlet 13. The peripheral side thereof is hermetically connected to the inner wall of the cylinder body. Through the filter membrane 31, the clear liquid in the gypsum slurry can be filtered to realize the solid-liquid separation and thickening of the gypsum slurry.

[0034] In one of the embodiments, please refer to Figure 2 , the filter membrane 31 is horizontally arranged. At this time, the position of the filtrate outlet 12 is higher than the position of the sewage outlet 13. The filtrate outlet 12 is above the filter membrane 31, and the sewage outlet 13 is below the filter membrane 31. During implementation, the slurry below the filter membrane 31 will be filtered through the filter membrane 31, and the filtered water will converge with the clear liquid above the filter membrane 31 and be discharged from the filtrate outlet 12.

[0035] In other embodiments, please refer to Figure 3 , the filter membrane 31 can also be inclinedly arranged. This installation method can increase the filtering area of the filter membrane 31. At this time, the height of the filtrate outlet 12 is equal to or higher than the height of the sewage outlet 13.

[0036] Preferably, in some embodiments, the hydrocyclone structure 4 includes 1-3 hydrocyclones. When one hydrocyclone is provided, its water inlet 11 is connected to the sewage outlet 13 of the cylinder body 1 through a connecting pipe 41; when two or more hydrocyclones are provided, the water inlet 11 of one of the hydrocyclones is connected to the sewage outlet 13 of the cylinder body 1 through a connecting pipe 41, and the inlets of the other hydrocyclones are sequentially connected to the outlet of the previous hydrocyclone.

[0037] During implementation, the gypsum slurry enters from the water inlet 11 at the bottom of the cylinder body 1 and is fully mixed by the spiral stirring paddle 22. The feeding flow rate is relatively large, which will generate a certain pressure, and the internal gypsum slurry will flow out from two directions, namely the filter membrane 31 and the hydrocyclone. The filtering effect of the filter membrane 31 will initially increase the gypsum concentration inside the cylinder body 1. The high-concentration gypsum in the lower part of the cylinder body 1 undergoes secondary solid-liquid separation under the action of the hydrocyclone structure 4, increasing the separation effect. Affected by gypsum scaling, a conical interface 42 is provided at the connection between the hydrocyclone and the cylinder body 1 for easy dredging, and the filter membrane 31 inside the cylinder body 1 also needs to be replaced regularly.

[0038] The utility model realizes active stirring by arranging a stirring structure 2 inside the cylinder body 1, so that the gypsum slurry inside the cylinder body 1 is in a swirling flow state. Through stirring, the gypsum slurry is mixed evenly and small-particle gypsum is enriched and grown, reducing the scaling inside the cylinder body 1.

[0039] The utility model can filter the water flowing towards the filtrate outlet 12 by setting the filtering structure 3, enabling some slurries to be directly filtered, increasing the concentration of the slurries inside the cylinder 1, improving the solid-liquid separation efficiency and throughput. The filtered water merges with the clear liquid at the upper end of the filtering structure 3, while the high-concentration gypsum at the lower part of the cylinder 1 flows towards the cyclone structure 4 through the sewage outlet 13 and undergoes secondary solid-liquid separation under the action of the cyclone structure 4, enhancing the separation effect. By cooperating with the set filtering structure 3 and cyclone structure 4, on the one hand, the sewage outlet 13 is connected to the cyclone structure 4, which can reduce the mud content at the filtering end of the filter membrane 31 and prevent the filter membrane 31 from being blocked. On the other hand, the filter membrane 31 can filter out the excess clear water, reduce the processing burden of the cyclone, and facilitate the enrichment and growth of small-particle gypsum.

[0040] Through this design, the solid-liquid separation efficiency of the gypsum wastewater can be improved, and at the same time, the processing capacity of the cyclone structure 4 can be increased.

[0041] The specific implementation manners of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and deformations made according to the technical concept of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A high concentration gypsum wastewater cyclone separator group, characterized in that: include: A cylinder, wherein a water inlet is arranged at the bottom of the cylinder, and a filtrate outlet and a sewage outlet are arranged on the side walls thereof; A stirring structure, wherein the stirring structure is arranged inside the cylinder; A filtering structure, the filtering structure is arranged between the filtrate outlet and the sewage outlet, and is used to filter the water flowing to the filtrate outlet; as well as, A cyclone structure, wherein the water inlet of the cyclone structure is connected with the sewage outlet.

2. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The cyclone structure is connected to the sewage outlet through a connecting pipe, the cross section at the interface of the connecting pipe gradually increases from the cyclone structure to the pipe mouth, and the interface connecting the connecting pipe and the cylinder is a conical interface.

3. The high-concentration gypsum wastewater cyclone separator group according to claim 2, characterized in that: A valve is installed on the connecting pipeline.

4. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The stirring structure includes a stirring shaft and a stirring paddle, wherein the stirring paddle is fixed to the end of the stirring shaft. The high-concentration gypsum wastewater cyclone separator group also includes a transmission member, which is connected to the stirring shaft to drive the stirring shaft and the stirring paddle to rotate.

5. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The cylinder is a closed structure.

6. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The filtering structure comprises a filter membrane, which is arranged between the filtrate outlet and the sewage outlet, and the peripheral side of the filter membrane is connected to the inner wall of the cylinder.

7. The high-concentration gypsum wastewater cyclone separator group according to claim 6, characterized in that: The filter membrane is arranged horizontally.

8. The high-concentration gypsum wastewater cyclone separator group according to claim 6, characterized in that: The filter membrane is arranged in an inclined manner.

9. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The position of the filtrate outlet is arranged to be higher than the position of the sewage outlet.

10. The high-concentration gypsum wastewater cyclone separator group according to claim 1, characterized in that: The cyclone structure includes 1-3 cyclones.

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