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Paper mill sewage filtering device

A technology for paper mills and sewage, applied in the fields of filtration and separation, moving filter element filters, separation methods, etc., can solve the problems of impact, increase labor costs, and reduce sewage passability.

Inactive Publication Date: 2020-01-03
邱建军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Paper mill sewage contains a large amount of suspended solids, such as fibers and fiber fines, etc. Most of the prior art removes such suspended solids by means of filtration, that is, the papermaking sewage passes through a channel with a filter, and the filter is used to filter The suspended solids are blocked to separate the sewage from the suspended solids. The above means have the following problems. After the filter screen works for a period of time, the suspended solids blocked on one side of the filter screen will increase, and the sewage passability will decrease. The net is cleaned, which will affect the filtration efficiency of the sewage and increase the labor cost

Method used

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Embodiment 1

[0028] see Figure 1-5 , the present embodiment provides a paper mill sewage filtering device, comprising a filter box 4, the upper side of the filter box 4 is provided with a water inlet 3, and the bottom of the filter box 4 is provided with a drain 26, and the filter box is 4. A filter assembly 5 is rotatably installed inside. The filter assembly 5 includes a central ring 17 and several filter screen assemblies rotatably arranged outside the central ring 17. The inside of the filter box 4 is provided with a A flap assembly that drives the filter screen assembly to rotate, a cleaning assembly for removing debris from the rotated filter screen assembly is provided above the flap assembly, and a collection box 24 for collecting debris is provided below the flap assembly .

[0029] The papermaking sewage is injected into the filter box 4 from the water inlet 3, and the fiber debris and other sundries in the papermaking sewage are filtered through the filter assembly, and the fi...

Embodiment 2

[0047] see figure 1 , a sewage filter device for paper mills. Compared with Embodiment 1 in this embodiment, the upper part of the filter box 4 is also provided with a controller 23 electrically connected to the first motor 1 and the second motor 7 respectively. The controller 23 detects the rotation angle of the first motor 1. When the first motor 1 rotates the centerline of the filter screen body 15 corresponding to a certain filter screen assembly to the extension line of the second rotating shaft 8, the controller 23 Control the second motor 7 to start, so that the second motor 23 rotates 180 degrees, and then drives the filter screen assembly to turn over 180 degrees, and the fiber debris on the upper part of the filter screen assembly is turned to the lower part.

[0048] The detection of the first motor 1 by the controller 23 and the control means to the second motor 7 belong to the prior art, and will not be repeated here. The model of the controller 23 is not limited,...

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Abstract

The invention provides a paper mill sewage filtering device, and belongs to the technical field of sewage treatment. The paper mill sewage filtering device comprises a filtering box, wherein a water inlet is formed in one side of the upper portion of the filtering box, a water discharge opening is formed in the bottom of the filtering box, a filtering assembly is rotatably arranged in the filtering box, and the filtering assembly comprises a central ring and a plurality of filter screen assemblies which are rotatably arranged on the outer side of the central ring. In the paper mill sewage filtering device, through the filter screen assemblies which are rotatably arranged, fiber debris which is filtered out from papermaking sewage is taken away from a sewage filtering region, the filter screen assemblies are overturned by a cooperative turning plate assembly, the fiber debris on the upper portions of the filter screen assemblies is overturned to be on the lower portions, cleaning is conducted by a cooperative cleaning assembly, and the cleaned filter screen assemblies continue to rotate, and participate in sewage filtering again to achieve continuous non-stop filtering of the sewage, so that the situation that due to massive accumulation of fiber debris in sewage, filter screen assemblies are blocked, and normal flowing of the sewage is affected, so that the efficiency of purifying the sewage is reduced is avoided.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a sewage filtering device for paper mills. Background technique [0002] Paper mill wastewater has complex components and poor biodegradability, and is difficult to treat as industrial wastewater. [0003] Paper mill sewage contains a large amount of suspended solids, such as fibers and fiber fines, etc. Most of the prior art removes such suspended solids by means of filtration, that is, the papermaking sewage passes through a channel with a filter, and the filter is used to filter The suspended solids are blocked to separate the sewage from the suspended solids. The above means have the following problems. After the filter screen works for a period of time, the suspended solids blocked on one side of the filter screen will increase, and the sewage passability will decrease. The net is cleaned, which will affect the filtration efficiency of the sewage, and also increase...

Claims

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Application Information

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IPC IPC(8): B01D33/19B01D33/50B01D33/52
CPCB01D33/19B01D33/50B01D33/52
Inventor 邱建军
Owner 邱建军
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