CN201768435U - Four inch centrifugal screen filter - Google Patents

Abstract

The utility model belongs to an industry and agricultural water conservation filter equipment especially a four cun centrifugation formula filters that add nets, the net filter including grit separator and its series connection. The sand-stone separator also comprises a sand setting tank, a sand-stone separator water inlet pipe, a sand discharge valve and a connecting pipe; the strainer has three filtering barrels with exhaust valves on the water inlet and outlet, and water inlet pipe and water outlet pipe on the side and lower part of the filtering barrels are connected in parallel through butterfly valve, and the other side of the filtering barrels is provided with a drain valve, and the lower part of each filtering barrel is welded with a filtering net seat ring and provided with a seat ring water stop rubber ring, and is inserted with a 304L stainless steel cylindrical filtering net. In addition, a pressure gauge is respectively arranged at the top of the connecting pipe 20 and the water outlet of the water outlet pipe. An object of the utility model is to provide a four cun centrifugation add net formula filters can realize manual water conservancy and wash the filter screen, needn't extract the net and brush with clear water and brush, and is efficient, and loss of head is little and energy-conserving, and management cost and low in labor strength.

Description

Four-inch centrifugal screen filter

technical field

The utility model belongs to industrial and agricultural water-saving filter devices, in particular to a four-inch centrifugal screen filter

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. Small areas and small areas of basic farmers account for a large proportion in our district. In the past, a few or dozens of basic farmers concentrated on building a water supply system. The quality of users is not high. There are many disputes in the unified management of electricity charges, which are difficult to deal with, resulting in 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 four-inch centrifugal screen filter, which can realize manual hydraulic cleaning of the filter screen, without pulling out the screen and cleaning it with clean water and a brush, high efficiency, energy saving due to small water head loss, and management costs With low labor intensity, small users can establish independently managed water systems. the

The purpose of this utility model: a four-inch centrifugal screen filter, including sand and gravel separator and its series-connected screen filter. The sand and gravel separator is composed of a grit settling tank, a sand and gravel separator, a sand and gravel separator inlet pipe and a connecting pipe; the mesh filter has four filter barrels with an exhaust valve on the water inlet and outlet and its side , the water inlet and outlet pipes below; its features are: the front part uses a connecting pipe to connect the sand and gravel separator in series, and the rear part uses a horizontal inlet and outlet pipe for the side, bottom inlet and outlet of the filter barrel to realize parallel connection through a butterfly valve soft connection. A sewage outlet with a ball valve is set up on the other side of the filter barrel, and a 304L stainless steel filter net is installed in each filter barrel, with the top blocked and the bottom opened. In addition, install a pressure gauge at the top of the connecting pipe and at the water outlet of the water outlet pipe. the

The working principle of the utility model is: the water to be treated tangentially flows into the inner side of the sand separator to generate a swirling flow, and the particles in the water are close to the inner wall under the action of the centrifugal force generated by the swirling flow, and sink into the grit settling tank under the action of gravity. The center of the sand-stone separator rises when the water is clear, achieving the purpose of water-sand separation. The water that has just completed the first stage of filtration enters the filter chamber of the filter barrel from the water inlet of the mesh filter to start the second stage of filtration. When the water containing impurities enters from the outer wall of the filter and flows out from the inner wall of the filter, the impurities are attached to the filter. On the outer wall, 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 bucket 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 show a certain pressure difference. When the pressure difference reaches the expected value, the sewage discharge work must be carried out; Sewage valve, at this time, part of the clean water filtered by other filter barrels flows back into the filter barrel to be drained, and flows out from the inner wall of the net to the outer wall of the net, forcing the dirt adsorbed on the outer wall of the net to leave, and drained out of the barrel 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 four-inch centrifugal screen filter, as shown in the 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 bucket Upper 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 net; 15- Water inlet of filter barrel; 16-Water outlet of filter barrel; 17-Seat ring of filter mesh; 18-Seat ring water-stop rubber ring; 19-Mesh filter water inlet valve; 22-sandstone separator inlet pipe; 23-sandstone separator; 24-grit tank; The sand separator 23 is also composed of a grit settling tank 24, a sand separator inlet pipe 22, a sand discharge valve 25 and a connecting pipe 20; 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 sewage valve 3 is set on the other side of the filter barrel 5, and the manual hydraulic cleaning method is used instead of the net brush. Cleaning method, improving the cleaning method of the filter screen for quick sewage discharge, the filter screen seat ring 17 is welded to the lower part of each filter barrel 5 and is equipped with a seat ring water-stop rubber ring 18, a 304L stainless steel one is inserted, and the upper block and the lower open cylindrical filter net14. In addition, a pressure gauge 10,9 is respectively installed at the water outlet 8 of the top of the connecting pipe 20 and the water outlet pipe 13. the

The sand and gravel separator (23) is connected with the mesh filter (26) to realize a series connection to form a two-stage filtration system. A drain valve (3) is respectively set up on the front side of the filtering bucket (5). The filter screen (14) is a filter mesh of 60, 80, 100, 120, 304L stainless steel, a cylindrical filter screen (14) with a height of 500mm and a diameter of 75mm, and the total number is three. Each filter barrel (5) has a butterfly valve (2) and a butterfly valve (1) on the water inlet (15) and water outlet (16); it is softly connected to the water inlet pipe (12) and the water outlet pipe (13) on its side and below . 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 (6)

1. four cun centrifuge screening-type filters comprise the well strainer (26) of sandstone separator (23) and its series connection, and sandstone separator (23) is also by mud settling tank (24), sandstone separator water inlet pipe (22), and sand flash valve (25) and tube connector (20) are formed; It is characterized in that: well strainer has three filter vat (5) and its sides of going up band air bleeding valve (7) of water inlet (15) and delivery port 16, following water inlet pipe (12), outlet pipe (13) is by butterfly valve (2), (1) 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 tube connector (20) top and outlet pipe (13) locates respectively to install a Pressure gauge (10) in addition, (9).

2. four cun centrifuge screening-type filters according to claim 1 is characterized in that: sandstone separator (23) is connected with well strainer (26) realizes that series connection forms two-stage filtration system.

3. four cun centrifuge screening-type filters according to claim 1 is characterized in that: a blowoff valve (3) is respectively set up in the last side of filter vat (5).

4. four cun centrifuge screening-type filters according to claim 1 is characterized in that: screen pack (14) is to filter order several 60,80,100,120, and 304L is stainless, the cylindrical screen pack (14) of high 500mm, diameter 75mm, and total quantity is three.

5. four cun centrifuge screening-type filters according to claim 1 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).

6. four cun centrifuge screening-type filters according to claim 1 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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