Self-circulation filtering device of water seal dust removal water tank

Abstract

The utility model discloses a self-circulation filtering device of a water seal dust removal water tank. The self-circulation filtering device comprises the water seal dust removal water tank, a bridge type grab crane, a dosing device, a sedimentation tank and a clean water tank which are sequentially arranged from top to bottom, a partition wall is arranged in the sedimentation tank, the sedimentation tank is divided into a primary sedimentation area and a secondary sedimentation area through the partition wall, the upper half portion of the partition wall is communicated with the primary sedimentation area and the secondary sedimentation area through a communicating pipe, a cavity penetrating through the bottom of the sedimentation tank is formed in the lower half portion of the partition wall, and a plurality of through holes communicated with the secondary sedimentation area and the cavity are formed in the lower half portion of the partition wall. A water receiving hopper is arranged at the bottom of the sedimentation tank; a water outlet of the clean water tank is connected with an inlet of the water pump, an outlet of the water pump is connected with a water inlet of the water seal dust removal water tank through a hose, and a water outlet of the water seal dust removal water tank is communicated with the primary settling zone. The device has the advantages that water in the water seal dust removal water tank is subjected to precipitation, flocculation and purification and then recycled, water resources are effectively utilized, and the purpose of environmental protection is achieved.

Description

Technical field:

[0001] The utility model relates to the field of wastewater treatment, in particular to a water-sealed dust removal water tank self-circulation filtering device. Background technology:

[0002] Coking plants usually use water-sealed dust removal devices to purify flue gas. Water-sealed dust removal devices isolate dust through water. Water is stored in the water-sealed dust removal water tank. After long-term accumulation, dust and soil mixed in the water form silt accumulation. The water quality deteriorates and corrodes the water tank wall, seriously restricting the stable operation of environmental protection facilities. Therefore, the water in the water tank needs to be replaced. In the past, it was directly discharged. However, with the increasingly prominent problem of water use for environmental protection, water resources need to be recycled. Utility model content:

[0003] The utility model aims to provide a water-sealed dust removal water tank self-circulating filtering device.

[0004] The utility model is implemented by the following technical solutions:

[0005] A water-sealed dust removal water tank self-circulating filtering device comprises a water-sealed dust removal water tank, a bridge grab crane, a dosing device, a sedimentation tank, a clean water tank, a water pump and a plurality of columns, wherein the bridge grab crane, the dosing device, the sedimentation tank and the clean water tank are arranged in sequence from top to bottom;

[0006] The dosing device, the sedimentation tank, and the clean water tank are all fixed to the plurality of columns, and the bridge grab crane is fixed on the top of the columns;

[0007] The sedimentation tank is provided with a partition wall integrally formed with the inner wall of the sedimentation tank, and the sedimentation tank is divided into a primary sedimentation area and a secondary sedimentation area by the partition wall. A connecting pipe is passed through the upper half of the partition wall, and the connecting pipe connects the primary sedimentation area and the secondary sedimentation area. A first valve is provided on the pipe mouth of the connecting pipe in the secondary sedimentation area. A cavity penetrating the bottom of the sedimentation tank is provided in the lower half of the partition wall, and a plurality of through holes connecting the secondary sedimentation area with the cavity are provided on the lower half of the partition wall. A water receiving hopper is provided at the bottom of the sedimentation tank, and the top of the water receiving hopper is connected to the cavity, and the bottom of the water receiving hopper is connected to the top of the clean water tank;

[0008] The drug outlet of the drug adding device is connected to the top of the secondary precipitation area, and the drug adding device will quantitatively add drugs into the secondary precipitation area;

[0009] The water outlet of the clear water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the water inlet of the water-sealed dust removal water tank through a hose, and the water outlet of the water-sealed dust removal water tank is connected to the primary sedimentation area.

[0010] Preferably, a three-way valve is provided between the outlet of the water pump and the hose, the outlet of the water pump is connected to the first port of the three-way valve, the second port of the three-way valve is connected to the hose, the third port of the three-way valve is connected to the secondary sedimentation area through a second valve, and the secondary sedimentation area is provided with a sewage outlet.

[0011] Preferably, the reagents include: coagulant PAC, coagulant PFS and coagulant aid PAM.

[0012] Advantages of the utility model: In this application, the water in the water-sealed dust removal tank is purified by sedimentation and flocculation, and then reused, effectively utilizing water resources to achieve environmental protection purposes; and the device of this application is arranged vertically to save space, the precipitated sludge can be grabbed and cleaned, and the flocculants can also be rinsed off with purified water. Description of the drawings:

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram of the AA section.

[0016] In the figure: water-sealed dust removal water tank 1, bridge grab crane 2, dosing device 3, sedimentation tank 4, clean water tank 5, water pump 6, column 7, partition wall 8, primary sedimentation area 9, secondary sedimentation area 10, connecting pipe 11, first valve 12, cavity 13, through hole 14, water receiving bucket 15, hose 16, three-way valve 17, second valve 18, sewage outlet 19. Specific implementation method:

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 , Figure 2As shown, a water-sealed dust removal water tank self-circulating filtering device comprises a water-sealed dust removal water tank 1, a bridge grab crane 2, a dosing device 3, a sedimentation tank 4, a clean water tank 5, a water pump 6 and a plurality of columns 7, wherein the bridge grab crane 2, the dosing device 3, the sedimentation tank 4 and the clean water tank 5 are arranged in sequence from top to bottom;

[0019] The dosing device 3, the sedimentation tank 4, and the clean water tank 5 are all fixed to a plurality of columns 7, and the bridge grab crane 2 is fixed on the top of the column 7;

[0020] A partition wall 8 integrally formed with the inner wall of the sedimentation tank 4 is provided in the sedimentation tank 4, and the sedimentation tank 4 is divided into a primary sedimentation area 9 and a secondary sedimentation area 10 by the partition wall 8. A connecting pipe 11 is passed through the upper half of the partition wall 8, and the connecting pipe 11 connects the primary sedimentation area 9 and the secondary sedimentation area 10. A first valve 12 is provided on the pipe mouth of the connecting pipe 11 of the secondary sedimentation area 10. A cavity 13 penetrating the bottom of the sedimentation tank 4 is provided in the lower half of the partition wall 8. A plurality of through holes 14 connecting the secondary sedimentation area 10 and the cavity 13 are provided on the lower half of the partition wall 8. A water receiving bucket 15 is provided at the bottom of the sedimentation tank 4, and the top of the water receiving bucket 15 is connected to the cavity 13, and the bottom of the water receiving bucket 15 is connected to the top of the clean water tank 5;

[0021] The drug outlet of the dosing device 3 is connected to the top of the secondary sedimentation area 10. The dosing device 3 will quantitatively add drugs into the secondary sedimentation area 10. The drugs include: coagulant PAC, coagulant PFS and coagulant aid PAM;

[0022] The water outlet of the clear water tank 5 is connected to the inlet of the water pump 6, and the outlet of the water pump 6 is connected to the water inlet of the water-sealed dust removal water tank 1 through a hose 16. The water outlet of the water-sealed dust removal water tank 1 is connected to the primary sedimentation area 9, and the water outlet of the water-sealed dust removal water tank 1 is higher than the position of the connecting pipe 11.

[0023] A three-way valve 17 is provided between the outlet of the water pump 6 and the hose 16. The outlet of the water pump 6 is connected to the first port of the three-way valve 17. The second port of the three-way valve 17 is connected to the hose 16. The third port of the three-way valve 17 is connected to the secondary sedimentation area 10 through the second valve 18. The secondary sedimentation area 10 is provided with a sewage outlet 19.

[0024] Working principle: When the utility model is in use, the sewage in the water-sealed dust removal water tank 1 flows into the primary sedimentation area 9 from the water outlet, and is left to settle. Then, the first valve 12 is opened to allow clarified water to flow into the secondary sedimentation area 10 from the connecting pipe 11. The dosing device 3 puts reagents into the secondary sedimentation area 10. The reagents include: coagulant PAC, coagulant PFS and coagulant aid PAM. The reagents coagulate the suspended matter and colloid in the secondary sedimentation area 10 to destabilize them, and flocculate the suspended matter and colloid into large and dense alum flowers and precipitate them. The purified clean water flows along the through hole 14 through the cavity 13 and the water receiving bucket 15 into the clean water tank 5 for temporary storage, and the water pump 6 pumps the clean water back to the water-sealed dust removal water tank 1 through the hose 16 for continued use.

[0025] The silt in the primary sedimentation area 9 is accumulated, and the bridge grab crane 2 can be used to grab the silt and do a certain degree of cleaning.

[0026] The water pump 6 is connected to the second valve 18 through the three-way valve 17, the second valve 18 is opened, the valve on the sewage outlet 19 is opened, and clean water is sent to the secondary sedimentation area 10 to flush the flocculated sediment out of the sewage outlet 19, thereby cleaning the secondary sedimentation area 10.

[0027] In the present application, the water in the water-sealed dust removal tank 1 is purified by sedimentation and flocculation, and then reused, thereby effectively utilizing water resources and achieving environmental protection purposes; and the device of the present application is arranged vertically to save space, the precipitated sludge can be grabbed and cleaned, and the flocculants can also be rinsed off with purified water.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-sealed dust removal water tank self-circulating filtering device, comprising a water-sealed dust removal water tank, characterized in that: It also includes a bridge grab crane, a dosing device, a sedimentation tank, a clean water tank, a water pump and a plurality of columns, wherein the bridge grab crane, the dosing device, the sedimentation tank and the clean water tank are arranged in sequence from top to bottom; The dosing device, the sedimentation tank, and the clean water tank are all fixed to the plurality of columns, and the bridge grab crane is fixed on the top of the columns; The sedimentation tank is provided with a partition wall integrally formed with the inner wall of the sedimentation tank, and the sedimentation tank is divided into a primary sedimentation area and a secondary sedimentation area by the partition wall. A connecting pipe is passed through the upper half of the partition wall, and the connecting pipe connects the primary sedimentation area and the secondary sedimentation area. A first valve is provided on the pipe mouth of the connecting pipe in the secondary sedimentation area. A cavity penetrating the bottom of the sedimentation tank is provided in the lower half of the partition wall, and a plurality of through holes connecting the secondary sedimentation area with the cavity are provided on the lower half of the partition wall. A water receiving hopper is provided at the bottom of the sedimentation tank, and the top of the water receiving hopper is connected to the cavity, and the bottom of the water receiving hopper is connected to the top of the clean water tank; The drug outlet of the drug adding device is connected to the top of the secondary precipitation area, and the drug adding device will quantitatively add drugs into the secondary precipitation area; The water outlet of the clear water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the water inlet of the water-sealed dust removal water tank through a hose, and the water outlet of the water-sealed dust removal water tank is connected to the primary sedimentation area.

2. A water-sealed dust removal water tank self-circulating filtering device according to claim 1, characterized in that: A three-way valve is provided between the outlet of the water pump and the hose, the outlet of the water pump is connected to the first port of the three-way valve, the second port of the three-way valve is connected to the hose, the third port of the three-way valve is connected to the secondary sedimentation area through a second valve, and the secondary sedimentation area is provided with a sewage outlet.

3. The water-sealed dust removal water tank self-circulating filtering device according to claim 1, characterized in that: The reagents include: coagulant PAC, coagulant PFS and coagulant aid PAM.

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