Filtering device for removing impurities in a mixture of biological diatomite

Patent metadata

Field	Value
Publication number	US-11260325-B2
Application number	US-202016992145-A
Country	US
Kind code	B2
Filing date	Aug 13, 2020
Priority date	Jan 6, 2020
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The present invention discloses a filtering device used for removing impurities in a mixture of biological diatomite, which relates to the technical field of sewage treatment. This device includes a plurality of deflectors evenly distributed in multiple layers in the vertical direction. Each deflector includes a shell and a top plate. There is a filter unit symmetrically arranged on the left and right sides of each deflector. The top of the shell is covered with a top plate hinged with the depressed plate. The bottom of the shell is provided with water inlets which communicate with the shunt pipe, and the upper parts of the left and right side walls of the shell are provided with overflow ports. The shell also has a plurality of diversion folding plates located below the overflow ports and vertically staggered and distributed on the left and right side walls. The filter unit includes an inclined water guiding groove and a filtering plate.

First claim

What is claimed is:

1. A filtering device for removing impurities in a mixture of biological diatomite, comprising a water inlet pipe, a plurality of shunt pipes, a plurality of deflectors, a filter unit and a water collecting pipe, wherein the plurality of deflectors are evenly distributed in a plurality of layers in a vertical direction, each deflector of the plurality of deflectors comprises a shell and a top plate, and a left side and a right side of each deflector of the plurality of deflectors are symmetrically provided with the filter unit;
a top of the shell is covered with the top plate, and the top plate is hinged with a depressed plate through a hinge, a bottom of the shell is provided with a water inlet, the water inlet pipe is in fluid communication with each of the plurality of shunt pipes, a water distribution valve is provided on the plurality of shunt pipes, and a plurality of overflow ports are provided on upper portions of a left side wall and a right side wall of the shell;
a plurality of diversion folding plates are horizontally arranged under the plurality of overflow ports, and the plurality of diversion folding plates are staggered and distributed on the left side wall and the right side wall of the shell in the vertical direction; the filter unit comprises a water guide groove and a filter plate, the water guide groove and the filter plate are fixedly connected to a side wall of the shell, the water guide groove is arranged obliquely, a water collecting space with a top opening is formed between the water guide groove and the side wall of the shell, a water collecting port is arranged on a front groove wall of the water guide groove, and the water collecting port is connected to the water collecting pipe;
the filter plate is obliquely arranged in the water collecting space, a top of the filter plate is flush with a bottom of the plurality of overflow ports, and a bottom of the filter plate is flush with a top of a right groove wall of the water guide groove; and
a water outlet pipe is connected to the water collecting pipe, and the water outlet pipe is provided with a water outlet valve.

2. The filtering device according to claim 1 , wherein a bottom of the water guide groove is a curved surface.

3. The filtering device according to claim 1 , wherein the filter plate is an arc-shaped mesh plate and the arc-shaped mesh plate is curved toward the water collecting space.

4. The filtering device according to claim 1 , wherein the filter plate is a screen with a clearance of 0.5-5 mm grid or mesh no less than 50 mesh.

5. The filtering device according to claim 1 , wherein the bottom of the filter plate is connected to a slag guide plate.

6. The filtering device according to claim 1 , wherein the filter unit further comprising an upper shutter for covering, the upper shutter comprises an arc-shaped plate, the arc-shaped plate is arranged obliquely and bent towards the filter plate, a top of the arc-shaped plate is fixedly connected to a top of the depressed plate, and a spaced distance between the arc-shaped plate and the filter plate is more than 10 cm.

7. The filtering device according to claim 1 , further comprising a water return pipe, a first end of the water return pipe is connected to a collecting pipe, a second end of the water return pipe is connected to the water inlet pipe, and the water return pipe is provided with a water return valve.

8. The filtering device according to claim 7 , wherein the filter plate in the filter unit corresponding to an upper layer deflector has a larger filter hole than the filter plate in the filter unit corresponding to an adjacent lower layer deflector.

9. The filtering device according to claim 7 , wherein the filter plate in the filter unit corresponding to an upper layer deflector has a smaller filter hole than the filter plate in the filter unit corresponding to an adjacent lower layer deflector.

Assignees

• Univ Tongji

Inventors

• Dai Xiaohu
• Lu Bin
• Chai Xiaoli
• Wu Boran
• Zhou Zheng
• Wang Xiuzhong

Classifications

• Y02W10/10

  Biological treatment of water, waste water, or sewage · CPC title

• B01D29/035

  with curved filtering elements · CPC title

• B01D29/902

  containing fixed liquid displacement elements or cores · CPC title

• B01D29/92

  for discharging filtrate · CPC title

• B01D2201/184

  Special form, dimension of the openings, pores of the filtering elements · CPC title