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Liquid filtration device and method

A filter device, liquid technology, applied in the direction of chemical instruments and methods, filtration separation, separation methods, etc.

Active Publication Date: 2015-08-05
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in this application is to provide a liquid filtration device and method with high filtration efficiency and that can improve the pollution problem of the filter element

Method used

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  • Liquid filtration device and method
  • Liquid filtration device and method
  • Liquid filtration device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 2 As shown, when the filter assembly 2 is in a period of filtering state, the operating mode switching control valve 3 is first in the closed state, that is, the filter assembly 2 operates in the first filtering mode, and when the first filtering mode operates for a period of time, the operating mode switches The control valve 3 is opened, and the filter assembly 2 continues to operate in the second filter mode. Thereafter, the filter assembly 2 enters a cycle of backwashing state, and in this backwashing state, the operating mode switching control valve 3 is always open. Wherein, when the first filtering mode is switched to the second filtering mode, the operating mode switching control valve 3 can be triggered and opened by a set threshold value. . In this embodiment, it is preferable to open the operating mode switching control valve 3 when the filtering pressure difference on both sides of the filter element 202 reaches 0.2-0.4 MPa, so that the pre...

Embodiment 2

[0025] Such as image 3 As shown, when the filter assembly 2 is in a filter state of one cycle, the operation mode switching control valve 3 is first in the open state, that is, the filter assembly 2 operates in the second filter mode, and when the second filter mode operates for a period of time, the operation mode switches The control valve 3 is closed and the filter assembly 2 continues to operate in the first filter mode. Thereafter, the filter assembly 2 enters a cycle of backwashing state, and in this backwashing state, the operating mode switching control valve 3 is always open.

Embodiment 3

[0027] Such as Figure 4 As shown, when the filter assembly 2 is in a period of filtering state, the operating mode switching control valve 3 is first in the closed state, that is, the filter assembly 2 operates in the first filtering mode, and when the first filtering mode operates for a period of time, the operating mode switches The control valve 3 is opened, and the filter assembly 2 continues to operate in the second filter mode. After the second filter mode has been operated for a period of time, the operation mode switching control valve 3 is closed, and the filter assembly 2 continues to operate in the first filter mode. Thereafter, the filter assembly 2 enters a cycle of backwashing state, and in this backwashing state, the operating mode switching control valve 3 is always open. Similar to Embodiment 1, when the first filtering mode is switched to the second filtering mode, it is equivalent to cleaning the filter element 202 once, thereby prolonging the filtering tim...

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Abstract

he invention discloses a liquid filtration device and a method, which have high filtering efficiency and are capable of improving the filter core pollution problem. The liquid filtration device comprises a filtering component located on a circulating flow path; in the course of the operation of the filter component, when a to-be-filtered liquid passes through a filter core from inside to outside and a filtered liquid is discharged from a third end port, the filtering component is in a filtering state; when a backwash fluid enters into a fourth end port and passes through the filter core from outside to inside, the filtering component is in a backwash state; the filtering state and the backwash state of the filtering component are periodically switched; a second end port and the circulating flow path are connected through an operation mode switching control valve; when the filtering component is in a process of the filtering state, the operation mode switching control valve at least switches for one time, so that the filter component operates respectively in transformational a first filter mode when the operation mode switching control valve is in a closed state and a second filter mode when the operation mode switching control valve is in an open state.

Description

technical field [0001] The present invention relates to a liquid filtration device and method. Background technique [0002] There are two most commonly used filter elements in the field of liquid filtration. One is a tubular filter element with one end closed and the other open. It is installed in the shell of the filter assembly through the orifice at the open end. Under the action, it penetrates from the outside of the filter element into the cavity of the filter element, and then flows out from the open end of the filter element to become the filtered liquid; the other is a tubular filter element with two ends open, which is installed on the filter assembly through the orifice plates at both ends. Inside the shell, a closed cavity is formed between the filter element and the shell. When filtering, the filtered liquid enters the cavity of the filter element from the front end of the filter element under the action of pressure, and then flows along the cavity to the rear e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D29/31B01D29/50B01D29/66
Inventor 高麟汪涛樊彬
Owner CHENGDU INTERMENT TECH