CN201760176U - Three-parallel four-inch small combined screen filter - Google Patents

Abstract

The utility model belongs to an industrial and agricultural water-saving filtering device, in particular, a three-parallel four-inch small combined mesh filter. Three filter barrels with exhaust valves on the water inlet and outlet and the water inlet and outlet pipes on the side and below are connected in parallel through butterfly valve soft connections. A sewage valve is set up on the other side of the filter barrel; a filter mesh seat ring is welded at the bottom of each filter barrel and is equipped with a seat ring water-stop rubber ring, and a 304L stainless steel cylindrical filter mesh with a top block and a bottom open is inserted. In addition, a pressure gauge is installed at the water inlet of the water inlet pipe and the water outlet of the water outlet pipe. The purpose of the utility model is to provide a three-parallel four-inch small combined mesh filter, which can realize manual hydraulic cleaning of the filter mesh without pulling out the mesh and brushing it with clean water, with high efficiency, small head loss and energy saving, and low management fees and labor intensity.

Description

Three-parallel four-inch small combined screen filter

technical field

The utility model belongs to industrial and agricultural water-saving filter devices, in particular to a three-parallel four-inch small combined net filter. the

Background technique

At present, the industrial water treatment and water-saving irrigation that are being gradually promoted, such as water treatment and drip irrigation in waterworks, have relatively high water quality requirements for domestic water and irrigation water. Impurities and sediment in the water must be filtered out through filters in advance to prevent drip irrigation. With blockage and meet domestic water standards. The traditionally used filter is a sand filter or a manual cleaning screen filter. Under the same flow conditions, the gravel filter has a large volume, large head loss, and the power of the corresponding power equipment is large, which is uneconomical; the gravel filter used alone or in parallel must be equipped with a special cleaning pump. Stopping work or stopping one of the parallel connections will affect the normal operation of the system and reduce work efficiency. When the manual cleaning net filter used in single or parallel connection needs to be cleaned during the working process, the filter must stop working or stop one of the parallel connection, pull out the net and perform manual cleaning, which will affect the normal operation of the system and reduce the work efficiency. At present, the main service objects of the filter system are large users or contiguous concentrated users. The proportion of basic farmers in small areas and small areas in our district is quite large. In the past, a few or dozens of basic farmers concentrated on building a water supply system. The quality of users was not high. There were many disputes in water supply, fertilization, maintenance, maintenance, unified management of water or electricity fees, and it was difficult to deal with. Leading to unsatisfactory operation and management, the superiority of water-saving irrigation technology is not well reflected, and a series of problems such as slow popularization. the

Contents of the invention

The purpose of this utility model is to provide a three-parallel four-inch small combined net filter, which can realize manual hydraulic cleaning of the filter net, without pulling out the net and cleaning it with clean water and a brush, with high efficiency and energy saving due to small water head loss. The management fee and labor intensity are low, and small-scale users can establish independently managed water systems. the

The purpose of this utility model: a three-parallel four-inch small combined net filter, including four filter buckets with exhaust valves on the top and side and bottom water inlet and outlet pipes with water inlets and outlets; The characteristics are: the side, bottom inlet and outlet of the filter barrel are each connected in parallel with a horizontal inlet and outlet pipe through the soft connection of the butterfly valve, and a sewage valve is set on the other side of the filter barrel, and a 304L stainless steel valve is installed in each filter barrel. The upper block and the lower open cylindrical filter screen. In addition, a pressure gauge is installed at the water inlet of the water inlet pipe and the water outlet of the water outlet pipe to cooperate with the sewage discharge work. the

The working principle of the utility model is: when the water containing impurities enters the filter cavity of the net barrel from the water inlet, and the water containing impurities enters from the outer wall of the filter screen and flows out from the inner wall of the filter screen, the impurities are attached to the outer wall of the filter screen, Clean water flows out from the inner wall of the filter screen, passes through its lower opening, and flows into the water outlet pipe through the water outlet of the filter barrel for utilization. When there is a lot of dirt attached to the outer wall, the pressure gauge at the inlet and outlet of the filter will display a certain pressure difference. When the pressure difference reaches the expected value, the sewage must be discharged; the method is to close one of the water inlet valves in the parallel filter channel and open the Sewage valve, at this time, part of the clean water filtered out by other filters flows back into the filter screen to be discharged, and flows out from the inner wall of the screen to the outer wall of the screen, forcing the dirt adsorbed on the outer wall of the screen to leave, and is discharged from the bucket from the sewage outlet , carry out backwashing, after seeing clear water, close its drain valve and open the water inlet valve to make it enter the normal working state; then carry out backwashing work on the next filter barrel, the method is the same as above. The utility model has a good effect of manual hydraulic backwashing, does not need a hand brush to clean the filtering net, has small water head loss, good energy-saving effect, convenient and quick cleaning, low management cost and labor intensity, and small-scale users can establish independently managed water systems, reflecting energy saving. The superiority of water irrigation technology makes water-saving irrigation appear as energy-saving irrigation and accelerates its popularization rate in local areas. the

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing. the

Accompanying drawing is the sectional structure schematic diagram of the utility model. the

Detailed ways

A three-parallel four-inch small combined net filter, as shown in the attached figure, 1-filter poke outlet valve; 2-filter poke water inlet valve; 3-filter bucket drain valve; 4-back shelf; 5-filter bucket ;6- filter barrel cover; 7- exhaust valve; 8- water inlet; 9- water inlet pressure gauge; 10- water outlet pressure gauge; 11- water inlet; 12- water inlet pipe; 13- water outlet pipe; 14- Filter screen; 15-filter bucket water inlet; 16-filter bucket water outlet; 17-filter screen seat ring; The filter barrel 5 of the valve 7 and its side, the lower water inlet pipe 12, and the water outlet pipe 13 are connected in parallel through the soft connection of the butterfly valve 2 and 1, and a drain valve 3 is set on the other side of each filter barrel 5, which is replaced by manual hydraulic cleaning. Pull out the screen and brush to clean the method, improve the cleaning method of the filter screen as quick sewage discharge, in each filter bucket 5, the filter screen seat ring 17 is welded at the lower part and the seat ring water-stop rubber ring 18 is installed, and a 304L stainless steel one is inserted, the top is blocked and the bottom is blocked Open cylindrical filter screen 14. In addition, a pressure gauge 10,9 is respectively installed at the water inlet 11 of the water inlet pipe 12 and the water outlet 8 of the water outlet pipe 13. the

A drain valve (3) is respectively set up on the front side of the filter barrel (5). Filter screen (14) is filter mesh, 60,80,100,120, and 304L stainless steel, the cylindrical filter screen (14) of high 500mm, diameter 75mm, total quantity is three. : each filtering barrel (5) water inlet (15) and water outlet (16) all have butterfly valve (2) and butterfly valve (1); With its side, the water inlet pipe (12) below, the water outlet pipe (13) realize soft connect. The side of filter barrel (5) water inlet (15) and water outlet (16), below are connected with horizontal water inlet pipe (12), water outlet pipe (13). the

Claims (5)

1. four cun small-sized combination well strainers in parallel, comprise three filter vat (5) and its sides of going up band air bleeding valve (7) that have water inlet (15) and delivery port (16), following water inlet pipe (12), outlet pipe (13), it is characterized in that: filter vat (5) is by butterfly valve (2), (1) with water inlet pipe (12) outlet pipe (13) be flexible coupling realize in parallel, a blowoff valve (3) is respectively set up in filter vat (5) another side, each filter vat (5) interior bottom welding screen pack seat ring (17) also is equipped with seat ring water stop gel ring (18), a 304L is stainless for plug-in mounting, open cylindrical screen pack (14) under upward stifled, the delivery port (8) of the water inlet (11) of water inlet pipe (12) and outlet pipe (13) locates respectively to install a Pressure gauge (10) in addition.

2. according to claim 1 three four cun small-sized combination well strainers in parallel, it is characterized in that: blowoff valve (3) is respectively set up in the last side of filter vat (5).

3. according to claim 1 three four cun small-sized combination well strainers in parallel, it is characterized in that: screen pack (14) is for filtering order number, 60,80,100,120,304L is stainless, the cylindrical screen pack (14) of high 500mm, diameter 75mm, and total quantity is three.

4. according to claim 1 three four cun small-sized combination well strainers in parallel is characterized in that: all be with butterfly valve (2) and butterfly valve (1) on each filter vat (5) water inlet (15) and the delivery port (16); Realize being flexible coupling with its side, following water inlet pipe (12), outlet pipe (13).

5. according to claim 1 three four cun small-sized combination well strainers in parallel is characterized in that: the side of filter vat (5) water inlet (15) and delivery port (16), below be connected with horizontal water inlet pipe (12), outlet pipe (13).

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