CN2246015Y

CN2246015Y - Low pressure mud and sand filter

Info

Publication number: CN2246015Y
Application number: CN 96201708
Authority: CN
Inventors: 邱为铎
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-25
Filing date: 1996-01-25
Publication date: 1997-01-29
Anticipated expiration: 2006-01-25

Abstract

The utility model relates to a filter which is suitable for a drip irrigation system when a water source has high sand content. The filter is installed on a suction pipeline of a water pump to avoid high-pressure working environment so that the effective area of a filter screen is possibly enlarged, and the utility model has the advantages of low cost and safe and simple operation and running. The utility model is a polyvinyl chloride plastic pipe, both ends of which are sealed, the upper part of the polyvinyl chloride plastic pipe is provided with holes, and then a filter body (1) is formed; a stainless steel wire net (2) with 100 eyes are covered on pipe holes, a short pipe (3) is connected with the filter body (1) into integration, and a check valve (4) is arranged in the short pipe (3) and is connected with a suction pipeline of the water pump through a flange (5). When the filter works, water enters the filter through the stainless steel wire net (2) on the pipe holes, after the water is filtered, the water enters the suction pipeline of the water pump through the short pipe (3) and the check valve (4), and then silt and dirt are trapped on the outer side of the stainless steel wire net (2). The utility model can be cleaned by a vibrating or a back flushing method as required.

Description

Low pressure type silt filter

The utility model relates to a kind of when the water source sediment charge is very high, is applicable to the net formula filter in the drip irrigation system.

In the traditional exemplary configurations pattern of drip irrigation system hinge sections, well strainer always is arranged on the outlet pipeline of water pump, and operating pressure reaches as high as 11Mpa about 0.4～0.6Mpa.When the water quality sediment charge was not high, existing well strainer can both be competent at the requirement of purification of water quality.But under the situation of high sediment charge (such as Huanghe water), existing well strainer is because limited filter screen effective area, the silt that is retained down very soon is stifled, need constantly open the flushing pollution discharge valve and arrange husky operation, because it is too frequent to open the valve number of times, and causes drip irrigation system to run well.

When solving similar problem, often adopt the very high sandrock filter of cost and specification requirement portion abroad.China market does not still have this type of approved product at present.But because the natural situation of China's uniqueness, the example that consists of with Ningxia the Yellow River mainstream sand grain, sand grain less than 0.035mm accounts for 59%, and sandrock filter is just inoperative less than the silt of 0.02mm to particle diameter, so solve the technical scheme that sandrock filter is used in the high sand-carrying water source abroad, be difficult to indiscriminately imitate on the Yellow River and use.

Existing well strainer uses, principal contradiction when the high sediment charge of water quality is that the effective area of filter screen is too little, if strengthen the filter screen effective area, then the volume of filter also strengthens thereupon, but because filter is under high pressure worked, it all is irrational from manufacturing cost and technology that volume strengthens the back.

The purpose of this utility model is exactly to be the high drip irrigation water source of sediment charge, and a kind of filter of practicality is provided.It is to realize by following technical scheme: change the traditional layout of drip irrigation system hinge typical case, filter is changed the suction line that is installed to water pump from the outlet pipeline that was installed in water pump originally, its advantage is:

1. make the working environment of filter become low-pressure area from the higher-pressure region, thereby reduced filter requirement to technology and technology on making, this just makes the volume that strengthens filter in practice, and the effective area that promptly strengthens screen pack becomes possibility.

2. cost is low.

3. safe in utilization, be easy to management.

Below in conjunction with accompanying drawing, be further elaborated:

Be one section pvc tube among the figure, shut at two, above the punching and with 100 purpose stainless steel cloth (2) overspreads on pore, so the formation filter body (1).Short tube (3) and filter body (1) fuse, and check (non-return) valve (4) water-filling when being convenient to starting mode of pump is arranged in the short tube, are connected with water pump suction pipe by flange (5) then.

During work, water enters filter through the stainless steel cloth (2) on the pore, and the water after the filtration enters the pump sump pipeline by short tube (3) and check (non-return) valve (4).Silt and dirt are cut in stainless steel cloth (2) outside, can arrange husky operation by vibration or back-flushing method (not drawing among the figure) when gathering to a certain degree.

Claims

A kind of filter that is applicable to drip irrigation system, it is characterized in that filter is installed on the suction line of water pump, comprise that a hole container and illiteracy are with stainless steel cloth (2) composition filter body (1), short tube (3) is arranged on the filter body (1), connect with water pump suction pipe, check (non-return) valve (4) is arranged, water-filling when being convenient to starting mode of pump in the short tube (3).