CN2333770Y

CN2333770Y - Water-saving gravity valveless filter backflushing device

Info

Publication number: CN2333770Y
Application number: CN 98224258
Authority: CN
Inventors: 王
Original assignee: Jiangsu Seagull Cooling Tower Co Ltd
Current assignee: Jiangsu Seagull Cooling Tower Co Ltd
Priority date: 1998-06-11
Filing date: 1998-06-11
Publication date: 1999-08-18
Anticipated expiration: 2008-06-11

Abstract

The utility model relates to a water-saving gravity valve-less filter backflushing device. The utility model is characterized in that a partition board is arranged in a turbid water inlet tank, a return chamber is composed of the partition board and the right wall of the tank, both ends of a small siphon pipe are respectively inserted in a turbid water inlet chamber and a water returning chamber, one end of a siphon communicating pipe is communicated with the small siphon pipe, the other end is connected with a pumping barrel in an upper clean water tank, and the bottom of the water returning chamber is provided with a water returning pipe communicated with the upper clean water tank. The utility model has the advantages of simple structure and low cost and solves the problem that water is wasted when the back flushing is carried out.

Description

Water-saving gravity valveless filter back purge system

The utility model relates to a kind of gravity valveless filter back purge system, particularly relates to a kind of water-saving gravity valveless filter back purge system.

Water treatment at present has been extensive use of the gravity valveless filter back purge system.During normal drainage, muddy water to be filtered enters the muddy water inlet water tank weir plate that overflow and enters the muddy water downstream chamber, enters Rose Box from pipeline, filters the logical filter cap in back through filtering layer and enters down filtered water tank, flows out from the water purification outlet pipe through entering the supernatant water tank communicating pipe then.Because filtration beds can be intercepted and captured the impurity in many muddy waters, the resistance of filtration is increased, cause the water level of Rose Box constantly to rise, make muddy water enter syphon, when water level rises to exhaust tube and syphon interface height, this part water flows through evacuation, just begins backwash after the top elbow that overflow forms siphon.At this moment, the water in the filtered water tank will oppositely lead to filter cap, and filler is washed.Addle after the flushing will flow into the discharge casing discharging by syphon and gutter.Clear water flushing in filtered water tank uses up, because air makes siphon destructive by siphon destructing tube.At this moment, the impurity of filtration beds is got rid of, and resistance descends, and makes to filter to restart.Yet in the process of backwash, the water inlet in the Rose Box does not stop, and the addle of this part water after along with backwash is discharged together, causes the waste of water.

The purpose of this utility model is for using water wisely, overcomes the shortcoming of existing gravity valveless filter back purge system, designs a kind of water-saving gravity valveless filter back purge system.

The utility model is achieved in that water-saving gravity valveless filter back purge system, comprise the muddy water inlet water tank, in its case weir plate is arranged, there is the muddy water import its lower end and has muddy water communicating pipe to communicate with Rose Box, filter material layer is arranged at the water filtering tank bottom, the bottom has the filter cap to communicate with following filtered water tank, the top of water filtering tank has syphon to communicate with gutter, there is the supernatant water tank upper end of water filtering tank, the water purification outlet pipe is arranged at the top of supernatant water tank, there is communicating pipe to communicate between supernatant water tank and the following filtered water tank, also have an automatic terminator of backwash and a siphon destructing tube to communicate in addition in the supernatant water tank with syphon, it is characterized in that, have the right side wall of a dividing plate and muddy water inlet water tank to constitute a return passage in the muddy water inlet water tank, have little siphonal two ends to insert respectively in muddy water intake chamber and the backflow hydroecium, the end of siphon communicating pipe communicates with little syphon, the other end is connected with the indoor suction-pump of supernatant water, has a backflow water pipe to communicate with the supernatant water tank in the bottom of return passage.

Following accompanying drawing has been drawn embodiment of the present utility model, is described further in conjunction with the accompanying drawings:

Fig. 1 is a structural representation of the present utility model.Symbolic representation is as follows among the figure: muddy water water inlet 1, muddy water inlet water tank 2, weir plate 3, muddy water intake chamber 4, muddy water water-supplying chamber 5, little syphon 6, siphon communicating pipe 7, dividing plate 8, backflow hydroecium 9, backflow water pipe 10, syphon 11, siphon destructing tube 12, exhaust tube 13, gutter 14, water purification outlet pipe 15, the automatic terminator 16 of backwash, evacuation 17, communicating pipe 18, discharge casing 19, sewage outlet 20, following filtered water tank 21, filter cap 22, filter material layer 23, Rose Box 24, supernatant water tank 25, suction-pump 26, muddy water communicating pipe 27.There is an exhaust tube 13 to be connected on siphon communicating pipe 7 with evacuation 17.

The utility model is work like this: after backwash begins, water level in the supernatant water tank 25 descends rapidly, the vacuum that water level in the suction-pump 26 is also and then descended and cause will extract the air in siphon communicating pipe 7 and the little syphon 6, air in little syphon 6 is taken out to the greatest extent, water is full of little syphon 6 and forms siphon, at this moment muddy water just is pumped to the backflow hydroecium 9 from muddy water intake chamber 4, thereby muddy water is just no longer from muddy water downstream chamber 5 and muddy water communicating pipe 27 enter Rose Box 24.Muddy water will enter the supernatant water tank also through communicating pipe 18 entering down filtered water tank 21 through backflow water pipe 10 from backflow hydroecium 9 simultaneously, and logical 22 pairs of filtration bedss of filter cap 23 carry out backwash.

The utility model has the advantages that waste water problem when having solved backwash, and The utility model is simple in structure, and cost is low, is easy to promote.

Claims

1, a kind of water-saving gravity valveless filter back purge system, comprise muddy water inlet water tank 2, weir plate 3 is arranged in its case, there is muddy water import 1 its lower end, and there is muddy water communicating pipe 27 to communicate with Rose Box 24, filter material layer 23 is arranged at Rose Box 24 bottoms, the bottom has filter cap 22 to communicate with following filtered water tank 21, the top of water filtering tank 24 has syphon 11 to communicate with gutter 14, there is supernatant water tank 25 upper end of water filtering tank 24, water purification outlet pipe 15 is arranged at the top of supernatant water tank 25, there is communicating pipe 18 to communicate between supernatant water tank 25 and the following filtered water tank 21, also have the automatic terminator 16 of backwash to be connected with syphon 11 in addition in the supernatant water tank 25 with a siphon destructing tube 12, it is characterized in that, in muddy water inlet water tank 2, there are a dividing plate 8 and the right side wall of muddy water inlet water tank 2 to constitute a backflow hydroecium 9, there are the two ends of a little syphon 6 to insert respectively in muddy water intake chamber 4 and the backflow hydroecium 9, the end of siphon communicating pipe 7 communicates with little syphon 6, the other end is connected with suction-pump 26 in supernatant water tank 25, has a backflow water pipe 10 to communicate with supernatant water tank 25 in the bottom of backflow hydroecium 9.

2,, it is characterized in that having on siphon communicating pipe 7 exhaust tube 13 to be connected with evacuation 17 according to the described water-saving gravity valveless filter back purge system of claim 1.