Sewage purification tank for waste gas washing tower

Abstract

A sewage purification box for a waste gas washing tower comprises a sewage purification box body (2), a water inlet is formed in the upper portion of the sewage purification box body (2), a water outlet is formed in the lower portion of the sewage purification box body (2), and a filtering needle plate (15), a filtering felt plate (16) and an arc-shaped water collecting groove (17) are sequentially arranged between the water inlet and the water outlet of the sewage purification box body (2). The filtering needle plate (15) and the filtering felt plate (16) are obliquely arranged in the sewage purifying box (2) and are opposite in inclination direction, a water outlet is formed in the lower end of the filtering needle plate (15), a water drainage pipe is arranged at the bottom of the arc-shaped water collecting tank (17), and a filtering cylinder (18) is arranged in the water drainage pipe. The sewage treatment device has the advantages that sewage is sequentially subjected to three-time graded purification through the filter needle plate, the filter felt plate and the filter cartridge, impurities in the sewage can be effectively removed, and the sewage treatment device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification, in particular to a sewage purification box for a waste gas washing tower. Background Art

[0002] At present, some industrial waste gas contains a large amount of dust and flocs, which need to be purified before discharge. The existing purification is mostly carried out through a washing tower, and the wastewater after washing is directly discharged or precipitated and then returned to the spray pipe for recycling. Since the wastewater still contains some debris after sedimentation, it is easy to clog the nozzle when it flows back. Utility Model Content

[0003] The purpose of this utility model is to provide a sewage purification box for an exhaust gas washing tower in view of the above-mentioned shortcomings.

[0004] The utility model includes a sewage purification box, which has a water inlet on the upper part and a drain outlet on the lower part. A filter needle plate, a filter felt plate and an arc-shaped water collecting trough are sequentially arranged between the water inlet and the drain outlet of the sewage purification box. The filter needle plate and the filter felt plate are both installed obliquely in the sewage purification box, and the inclination directions are opposite. A drain outlet is provided at the lower end of the filter needle plate, a drain pipe is provided at the bottom of the arc-shaped water collecting trough, and a filter cartridge is provided in the drain pipe.

[0005] The sewage purification box is a square box with an openable door on the upper side. Slots corresponding to the filter needle plate, filter felt plate and arc-shaped water collection tank are respectively provided in the sewage purification box. The filter needle plate, filter felt plate and arc-shaped water collection tank are movably plugged into the sewage purification box.

[0006] A plurality of decontamination plates are plugged into the top of the filter needle plate. A group of avoidance holes corresponding to the steel needles on the filter needle plate are opened on the decontamination plate, and handle grooves are provided at both ends of the decontamination plate.

[0007] The filter needle plate forms an angle α with the horizontal direction, and α is 3-5°.

[0008] The filter felt plate includes a metal filter layer, a filter felt layer and a mesh support plate layer from top to bottom. The mesh support plate layer is provided with upward inclined bending parts on all four sides, and a group of locking plates are provided on the bending parts. The filter felt layer and the metal filter layer are placed in the mesh support plate layer in sequence and locked by the locking plates.

[0009] The utility model has the advantages that sewage is sequentially purified three times through the filter needle plate, the filter felt plate and the filter cartridge, thereby effectively removing impurities in the sewage, and has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of the utility model.

[0011] Figure 2 It is a schematic diagram of the filter needle plate structure.

[0012] Figure 3 It is a schematic diagram of the filter felt plate structure. DETAILED DESCRIPTION

[0013] As shown in the accompanying drawings, the utility model includes a sewage purification box 2, which has a water inlet on the upper part and a drain outlet on the lower part of the sewage purification box 2. A filter needle plate 15, a filter felt plate 16 and an arc-shaped water collection tank 17 are sequentially provided between the water inlet and the drain outlet of the sewage purification box 2. The filter needle plate 15 and the filter felt plate 16 are both installed obliquely in the sewage purification box 2, and the inclination directions are opposite. The lower end of the filter needle plate 15 has a drain outlet, the bottom of the arc-shaped water collection tank 17 has a drain pipe, and a filter cartridge 18 is provided in the drain pipe.

[0014] The sewage purification box 2 is a square box body, and an openable door is provided on one side of the upper part of the sewage purification box 2. Slots corresponding to the filter needle plate 15, the filter felt plate 16 and the arc-shaped water collection tank 17 are respectively provided in the sewage purification box 2. The filter needle plate 15, the filter felt plate 16 and the arc-shaped water collection tank 17 are respectively movably inserted into the sewage purification box 2.

[0015] A plurality of decontamination plates 22 are plugged into the top of the filter needle plate 15 . A group of avoidance holes corresponding to the steel needles on the filter needle plate 15 are opened on the decontamination plate 22 . Handle grooves are provided at both ends of the decontamination plate 22 .

[0016] The filter needle plate 15 forms an angle α with the horizontal direction, and α is 3-5°.

[0017] The filter felt plate 16 includes a metal filter layer 23, a filter felt layer 24 and a mesh support plate layer 25 from top to bottom. The mesh support plate layer 25 is provided with upward inclined bending portions on all four sides, and a group of locking plates 26 are provided on the bending portions. The filter felt layer 24 and the metal filter layer 23 are placed in the mesh support plate layer 25 in sequence and locked by the locking plates 26.

[0018] Working method and principle: The sewage in the washing tower enters the sewage purification box 2, and the sewage is filtered through the filter needle plate 15 and the filter felt plate 16 in turn and then enters the arc-shaped water collection tank 17. The sewage is coarsely filtered when flowing through the filter needle plate 15. Large particles of impurities and flocs can be intercepted by the steel needles on the filter needle plate 15. Then the sewage enters the filter felt plate 16, is filtered twice by the felt on the filter felt plate 16, and then falls into the arc-shaped water collection tank 17, and then passes through the filter cartridge 18 for tertiary filtration. The filtered water is directly supplied to the washing tower spray through the pump for recycling.

[0019] The sewage purification box 2 is a square box body, and an openable door is provided on one side of the upper part of the sewage purification box 2. Slots corresponding to the filter needle plate 15, the filter felt plate 16 and the arc-shaped water collection tank 17 are respectively provided in the sewage purification box 2. The filter needle plate 15, the filter felt plate 16 and the arc-shaped water collection tank 17 are respectively movably plugged into the sewage purification box 2, which is convenient for quick installation and disassembly.

[0020] Multiple decontamination plates 22 are inserted into the top of the filter needle plate 15. These plates have a set of holes that correspond to the steel needles on the filter needle plate 15. When cleaning the filter needle plate 15, simply lift the decontamination plates 22 upward to remove debris from the needles. The filter needle plate 15 forms an angle α with the horizontal direction, α being 3-5 degrees, so that the incoming sewage flows slowly over the filter needle plate 15.

[0021] When the filter felt plate 16 needs to be cleaned, the locking plate 26 is opened, and the metal filter screen layer 23 is removed, and the metal filter screen layer 23 and the filter felt layer 24 can be cleaned separately.

Claims

1. A wastewater purification box for an exhaust gas scrubber, characterized in that It comprises a sewage purification box (2), the sewage purification box (2) having a water inlet at its upper portion and a drainage outlet at its lower portion, a filter needle plate (15), a filter felt plate (16) and an arc-shaped water collecting trough (17) being sequentially arranged between the water inlet and the drainage outlet of the sewage purification box (2), the filter needle plate (15) and the filter felt plate (16) being both installed in an inclined manner in the sewage purification box (2) and having opposite inclination directions, a drainage outlet being arranged at the lower end of the filter needle plate (15), a drainage pipe being arranged at the bottom of the arc-shaped water collecting trough (17), and a filter cartridge (18) being arranged in the drainage pipe.

2. The wastewater purification tank for an exhaust gas scrubber according to claim 1, characterized in that The sewage purification box (2) is a square box body. An openable door is provided on one side of the upper portion of the sewage purification box (2). Slots corresponding to the filter needle plate (15), the filter felt plate (16) and the arc-shaped water collecting trough (17) are provided in the sewage purification box (2). The filter needle plate (15), the filter felt plate (16) and the arc-shaped water collecting trough (17) are respectively movably plugged into the sewage purification box (2).

3. The wastewater purification tank for an exhaust gas scrubber according to claim 1, characterized in that A plurality of decontamination plates (22) are plugged into the top of the filter needle plate (15). The decontamination plates (22) are provided with a group of avoidance holes corresponding to the steel needles on the filter needle plate (15). Handle grooves are provided at both ends of the decontamination plates (22).

4. The wastewater purification tank for an exhaust gas scrubber according to claim 1, characterized in that The filter needle plate (15) forms an angle α with the horizontal direction, and α is 3-5°.

5. The wastewater purification box for an exhaust gas scrubber according to claim 1, characterized in that The filter felt plate (16) comprises, from top to bottom, a metal filter layer (23), a filter felt layer (24) and a mesh support plate layer (25). The mesh support plate layer (25) is provided with an upwardly inclined bending portion on each of its four sides, and a group of locking plates (26) are provided on the bending portion. The filter felt layer (24) and the metal filter layer (23) are placed in the mesh support plate layer (25) in sequence and locked by the locking plates (26).

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