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Jet automatic back flush filter

A backwash and filter technology, applied in the field of water treatment, achieves the effects of low operating energy consumption, simplified automatic control system, and convenient installation and use

Inactive Publication Date: 2011-06-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent "backwash filter drip irrigation device" with application number 00242093.7 discloses a filter element type drip irrigation filter backwash device, which can realize the backwash of the filter device, but the flushing process needs to be completed manually according to the pressure monitoring element

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] refer to figure 1 . The jet element consists of water flow input port 1, nozzle 2, left control hole 3, right control hole 4, left emptying hole 5, right emptying hole 6, splitter 7, right signal hole 8, left signal hole 9, right output channel 10. The left output channel 11 is formed. The splitter 7 divides the flow channel into a right output channel 10 and a left output channel 11. The left signal hole 9 and the left control hole 3 are connected to form the left signal channel through pipes from the outside. The left emptying hole 5 is on the left side of the left output channel 11. On the wall, it communicates with the left output channel 11 and is connected to a sewage pipe from the outside; the right signal hole 8 and the right control hole 4 are connected to form the right signal channel through the external part of the pipeline, and the right emptying hole 6 is on the left side of the right output channel 10 On the side wall, it communicates with the right out...

Embodiment 2

[0023] A jet automatic backwashing filter shown in Example 2 has similar basic structural features to that of Example 1, the difference is that the jet element cancels the signal channel, the filter medium is a filter screen, and the filter screen is arranged inside the filter assembly shell to filter Between the water inlet of the component and the water outlet of the filter component.

[0024] refer to figure 2 . The jet element is composed of a water flow input port 1, a nozzle 2, a left emptying hole 5, a right emptying hole 6, a splitter 7, a right output channel 10, and a left output channel 11. The splitter 7 divides the flow channel into a right output channel 10 and a left output channel 11; the left emptying hole 5 is on the left side wall surface of the left output channel 11, communicates with the left output channel 11, and connects a blowdown pipe from the outside; The emptying hole 6 communicates with the right output channel 10 on the left side wall surface ...

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Abstract

The invention relates to a jet automatic back flush filter which comprises a jet element, two filter units and a back flush pipeline, wherein two output ends of the jet element are respectively connected with the water inlets of the two filter units, and the water outlets of the two filter units are communicated through the back flush pipeline. When in use, one of the two filter units is in a water flow filtering state, and the other is in a back flush state. In the invention, the pressure difference formed due to accumulation and clogging of filter residue in the filter units drives jet to attach to a wall and reverse to switch the direction of flow and working state of the water flow in the filter units, so that the two filter units alternately perform filtration and back flush operation to realize continuous filtration and automatic back flush of the filter units. The cleaning process only depends on the flow pressure and the pressure difference without additional power. The back flush structure provided by the invention is simple, has low manufacturing cost and operation and maintenance costs, and is convenient to install and use. The jet automatic back flush filter is suitable for filtering water for micro-irrigation, sprinkling irrigation and low-pressure pipeline irrigation, and water for industrial cycle and cooling.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to water filtering equipment, in particular to a jet automatic backwashing filter. Background technique [0002] Automatic backwash filter is the most widely used filter equipment in agricultural micro-irrigation system and industrial water treatment. At present, there are no less than two sets of filter components in the common sand and gravel and net automatic backwash filters, equipped with automatic control devices such as differential pressure sensors, controllers, electric valves, and single-chip microcomputers. When the control system detects that the internal and external pressure difference of a certain group of filter components reaches the preset value, it will open the electric blowdown valve and backwash valve of this group of filter components, close the water inlet electric valve of this group of filter components, and allow other filter components to filter Th...

Claims

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Application Information

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IPC IPC(8): B01D24/46B01D24/12
Inventor 王新坤袁寿其李红朱兴业
Owner JIANGSU UNIV
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