Pretreatment device for coking wastewater

Abstract

The utility model discloses a pretreatment device for coking wastewater, which relates to the technical field of pretreatment of coking wastewater and comprises a mixing bin, a stirring shaft is movably connected in the mixing bin, one side of the stirring shaft is fixedly connected with a driven gear, one side of the mixing bin is fixedly connected with a stirring bin, and the other side of the mixing bin is fixedly connected with a driving gear. A transmission gear is movably connected to one side of the top of the stirring bin, a driving gear is connected to one side of the transmission gear in a meshed mode, a second stirring shaft is fixedly connected to the interior of the driving gear, and a motor is fixedly connected to one side of the second stirring shaft. By arranging the mixing bin and the stirring bin, during use, wastewater is fully stirred through the mixing bin and the stirring bin so that indissolvable substances in the wastewater can be fully dissolved, then the wastewater is brought into the mixing bin through the water pump, and the indissolvable substances in the wastewater can be filtered through the filter screen; after a period of time, insoluble substances in the mixing bin and the stirring bin are concentrated below the filter screen, so that the effect of filtering the insoluble substances in the wastewater is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coking wastewater pretreatment, in particular to a pretreatment device for coking wastewater. Background Art

[0002] In recent years, the coking industry has developed rapidly, and the problem of treating coking wastewater has gradually become a difficult problem in sewage treatment. The characteristics of coking wastewater are that it contains a certain amount of heavy oil and light oil, and has a high content of harmful substances such as cyanide, phenol, and ammonia nitrogen. The pollutant concentration is high, the chromaticity is high, the toxicity is large, and the nature is unstable. It needs to be specially treated before it can be discharged. It mainly comes from the primary cooling of coke oven gas, the production water in the coking production process, and the steam condensate wastewater. It refers to the wastewater generated in the processes of coal coking, gas purification, chemical product recovery, and chemical product refining, and is a typical toxic and difficult-to-degrade organic wastewater.

[0003] Pretreating coking wastewater before the coking wastewater treatment link helps to improve the treatment effect of coking wastewater. At present, it is difficult to ensure the stable compliance of COD in coking wastewater by combining conventional pretreatment of coking wastewater with the activated sludge method. There is an urgent need for a reasonable pretreatment air flotation system to effectively filter the insoluble substances in coking wastewater, optimize the coking wastewater pretreatment link, and thus improve the coking wastewater treatment effect. Therefore, a pretreatment device for coking wastewater is proposed here. Summary of the Utility Model

[0004] Technical Problem to be Solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a pretreatment device for coking wastewater.

[0006] Technical Solution

[0007] To achieve the above purpose, the utility model provides the following technical solution: A pretreatment device for coking wastewater, including a mixing bin, a stirring shaft is movably connected inside the mixing bin, a driven gear is fixedly connected to one side of the stirring shaft, a stirring bin is fixedly connected to one side of the mixing bin, a transmission gear is movably connected to the top side of the stirring bin, a driving gear is meshed and connected to one side of the transmission gear, a stirring shaft two is fixedly connected to the inside of the driving gear, and a motor is fixedly connected to one side of the stirring shaft two;

[0008] The bottom of the mixing bin and the stirring bin is fixedly connected with support legs. One side of the stirring bin is provided with a water pump through a pipeline, and the water pump is fixed at the bottom of the mixing bin through the pipeline. A filter screen is arranged below the stirring shaft. By setting two bins, namely the mixing bin and the stirring bin, during use, the wastewater is first fully stirred in the mixing bin and the stirring bin to facilitate the full dissolution of the insoluble substances in the wastewater. Then, the wastewater is brought into the mixing bin through the water pump. Due to the setting of the filter screen, the insoluble substances in the wastewater can be filtered. After a period of time, the insoluble substances in the mixing bin and the stirring bin are concentrated below the filter screen, achieving the effect of filtering the insoluble substances in the wastewater.

[0009] Preferably, one side of the top of the mixing bin is fixedly connected with a water inlet.

[0010] Preferably, a connection port is provided on one side of the mixing bin.

[0011] Preferably, a drain port is provided on one side of the stirring bin.

[0012] Preferably, a sealing cover is threadedly connected to the drain port.

[0013] Preferably, a valve is provided on the pipeline.

[0014] Beneficial effects:

[0015] Compared with the prior art, the pretreatment device for coking wastewater has the following beneficial effects:

[0016] By setting two bins, namely the mixing bin and the stirring bin, during use, the wastewater is first fully stirred in the mixing bin and the stirring bin to facilitate the full dissolution of the insoluble substances in the wastewater. Then, the wastewater is brought into the mixing bin through the water pump. Due to the setting of the filter screen, the insoluble substances in the wastewater can be filtered. After a period of time, the insoluble substances in the mixing bin and the stirring bin are concentrated below the filter screen, achieving the effect of filtering the insoluble substances in the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a schematic structural diagram of the mixing bin of the present invention;

[0019] Figure 3 is a schematic cross-sectional structural diagram of the present invention.

[0020] In the figure:

[0021] 1. Mixing bin; 2. Stirring shaft; 3. Driven gear; 4. Stirring bin; 5. Driving gear; 6. Driving gear; 7. Stirring shaft II; 8. Motor; 9. Support leg; 10. Pipeline; 11. Water pump; 12. Connection port; 13. Filter screen; 14. Drain port; 15. Water inlet; 16. Sealing cover. Detailed implementation

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 3 As shown, the present invention provides a technical solution: a pretreatment device for coking wastewater, including a mixing bin 1, a stirring shaft 2 is movably connected inside the mixing bin 1, a driven gear 3 is fixedly connected to one side of the stirring shaft 2, a stirring bin 4 is fixedly connected to one side of the mixing bin 1, a driving gear 5 is movably connected to the top side of the stirring bin 4, a driving gear 6 is meshed and connected to one side of the driving gear 5, a stirring shaft II 7 is fixedly connected to the inside of the driving gear 6, and a motor 8 is fixedly connected to one side of the stirring shaft II 7.

[0024] Support legs 9 are fixedly connected to the bottoms of the mixing bin 1 and the stirring bin 4. There is a water pump 11 on one side of the stirring bin 4 through a pipeline 10, and the water pump 11 is fixed to the bottom of the mixing bin 1 through the pipeline 10. A filter screen 13 is arranged below the stirring shaft 2. By setting two bins, namely the mixing bin 1 and the stirring bin 4, when in use, the wastewater and other substances are fully stirred in the mixing bin 1 and the stirring bin 4 to facilitate the full dissolution of the insoluble substances in the wastewater. Then, the wastewater is brought into the mixing bin 1 through the water pump 11. Due to the setting of the filter screen 13, the insoluble substances in the wastewater can be filtered. After a period of time, the insoluble substances in the mixing bin 1 and the stirring bin 4 are concentrated below the filter screen 13, achieving the effect of filtering the insoluble substances in the wastewater.

[0025] Please refer specifically to Figure 1 and Figure 2 A water inlet 15 is fixedly connected to one side of the top of the mixing bin 1, a connection port 12 is opened on one side of the mixing bin 1, a drain port 14 is arranged on one side of the stirring bin 4, and a sealing cover 16 is threadedly connected to the drain port 14.

[0026] A valve is arranged on the pipeline 10 of the device.

[0027] Working principle: The utility model is provided with two bins, namely a mixing bin 1 and a stirring bin 4. During use, the wastewater is first fully stirred in the mixing bin 1 and the stirring bin 4 to facilitate the full dissolution of the insoluble substances in the wastewater. Then, the wastewater is brought into the mixing bin 1 by a water pump 11. Due to the setting of a filter screen 13, the insoluble substances in the wastewater can be filtered. After a period of time, the insoluble substances in the mixing bin 1 and the stirring bin 4 are concentrated below the filter screen 13, achieving the effect of filtering the insoluble substances in the wastewater.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for coking wastewater, characterized in that: The invention comprises a mixing chamber (1), wherein a stirring shaft (2) is movably connected inside the mixing chamber (1), a driven gear (3) is fixedly connected to one side of the stirring shaft (2), a stirring chamber (4) is fixedly connected to one side of the mixing chamber (1), a transmission gear (5) is movably connected to one side of the top of the stirring chamber (4), a driving gear (6) is meshedly connected to one side of the transmission gear (5), a stirring shaft (7) is fixedly connected inside the driving gear (6), and a motor (8) is fixedly connected to one side of the stirring shaft (7); The bottoms of the mixing bin (1) and the stirring bin (4) are fixedly connected with support legs (9); one side of the stirring bin (4) is provided with a water pump (11) via a pipeline (10); the water pump (11) is fixed to the bottom of the mixing bin (1) via the pipeline (10); and a filter screen (13) is provided below the stirring shaft (2).

2. A pretreatment device for coking wastewater according to claim 1, characterized in that: A water inlet (15) is fixedly connected to one side of the top of the mixing bin (1).

3. A pretreatment device for coking wastewater according to claim 1, characterized in that: A connection port (12) is provided on one side of the mixing bin (1).

4. A pretreatment device for coking wastewater according to claim 1, characterized in that: A drainage outlet (14) is provided on one side of the mixing bin (4).

5. A pretreatment device for coking wastewater according to claim 4, characterized in that: A sealing cover (16) is threadedly connected to the drain port (14).

6. The pretreatment device for coking wastewater according to claim 1, characterized in that: The pipeline (10) is provided with a valve.

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