CN2216428Y

CN2216428Y - Efficient filter for purifying water

Info

Publication number: CN2216428Y
Application number: CN 95207642
Authority: CN
Inventors: 刘少怀
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-07
Filing date: 1995-04-07
Publication date: 1996-01-03
Anticipated expiration: 2005-04-07

Abstract

The utility model discloses an efficient filter for purifying water, comprising a barrel body and a filter pot which is composed of an upper sealing head and a lower sealing head. The two ends of the utility model are provided with a water inlet pipe and a water outlet pipe, the top part of the pot is provided with a partition board, the middle part of the pot is provided with a flooding nozzle and is filled with filtering materials, and the bottom part of the pot is provided with filter screens. The utility model is characterized in that the central of the pot is provided with a central water distributing pipe whose upper end is sealed and connected with the partition board, and the lower end of the central water distributing pipe is connected with the water inlet pipe. Water collecting pipes are evenly arranged along the side wall of the pot, the upper ends of the water collecting pipes are communicated with the through holes of the partition board, and the lower ends of the water collecting pipes are sealed and connected with an annular supporting board. The walls of the water collecting pipes and the water distributing pipe are respectively provided with evenly arranged water inlet holes and water outlet holes, and the peripheries of the pipes are all enclosed with the filter screens. The utility model has the advantages of high filter efficiency and low water consumption.

Description

Efficient water-purifying filter

The utility model relates to a kind of filter, is a kind of efficient water-purifying filter specifically.

Known water-purifying filter comprises a filter tank that is connected to form by cylindrical shell and upper and lower end socket, and its upper/lower terminal is provided with inlet tube and outlet tube, and a jar internal upper part is provided with dividing plate, and the bottom is provided with filter screen, and the middle part is filled with suspended filter material, and is provided with the filtrate Flushing nozzle.Muddy water is flowed into by the water inlet pipe of filter tank bottom, evenly gently flows through suspended filter material, and water purification after filtering flows out through the outlet pipe of the set filter in dividing plate bottom surface (drain cap) by the filter tank top.Open Flushing nozzle during the backwash suspended filter material, the water of backwash is flowed out by water inlet pipe through filter screen.Its filter area of this filter equals the cross-sectional area of cylindrical shell, i.e. F _θ=π D ²/ 4, D is the diameter of cylindrical shell.Muddy water is to flow through suspended filter material gently equably, and each cross section flow velocity of filtering layer equates.When muddy water passed through filtering layer from bottom to top, a large amount of suspended impurities was held back by the filtering layer bottom, had only a small amount of short grained suspended impurity to penetrate bottom and reached the filtering layer middle part.Along with the prolongation of filtration time, the absurd creature that hold back the filtering layer bottom is more and more, and it is more and more faster that the current head decreases increase.Reach a given head very soon and decrease feasible value.Filtering layer is finished needs backwash a filter cycle, and this moment, filtering layer bottom containing filth amount was big, and the top containing filth amount is little, and the average containing filth amount of filtering layer is also little.Cause the filter efficiency of this filter low.

The purpose of this utility model provides a kind of filter area big, filtrate containing filth amount height, the i.e. high efficient water-purifying filter of filter efficiency.

For achieving the above object, the utility model is achieved in that a kind of efficient water-purifying filter, it comprises one by cylindrical shell and last, the filter tank that low head connects to form, its two ends are provided with into, outlet pipe, the filter tank internal upper part is provided with dividing plate, the bottom is provided with filter screen, the middle part is filled with suspended filter material, and is provided with the filtrate Flushing nozzle, and it circumferentially has equally distributed through hole in the dividing plate upper edge, be provided with the center water distributor in filter tank central authorities, its upper end is tightly connected with dividing plate, and its lower end is connected with water inlet pipe, has equally distributed apopore on the pipe sidewall, the outer filter screen that is with of pipe, be provided with the collector pipe of even layout along the filter tank madial wall, its upper end is connected with the through hole of dividing plate, and its lower end and an annular backup pad are tightly connected, have equally distributed inlet opening on the tube wall, the outer filter screen that is with of pipe.

Compared with prior art, the utility model has the advantages that its filter area is big, filtrate containing filth amount height, water consumption is low, the filter efficiency height.

Now in conjunction with the accompanying drawings and embodiments the utility model is described specifically:

Fig. 1 is efficient water-purifying filter structural representation;

Fig. 2 is that the B-B of Fig. 1 is to view;

Fig. 3 is efficient water-purifying filter external structure.

As shown in Figure 1, a kind of efficient water-purifying filter, it comprises a cylindrical shell 12 and upper and

lower envelope centre

2 and 8 filter tanks that connect to form made by carbon steel or stainless steel, its two ends are provided with inlet tube and outlet tube 9 and 1, the filter tank internal upper part is provided with carbon steel or stainless steel separator 3, the bottom is provided with 20-30 order stainless steel filtering net 7, and the middle part is filled with the foamed polystyrene pearl and makes suspended filter material 5, and is provided with carbon steel or stainless steel filtrate Flushing nozzle 11.On dividing plate 3, have the through hole of circumferentially evenly arranging along it.Be provided with center water distributor 6 in filter tank central authorities, its upper end is tightly connected with dividing plate 3, and its lower end is connected with water inlet pipe 9, manages and has equally distributed apopore on 6 sidewalls, is with above-mentioned filter screen outside the pipe 6.Be provided with the collector pipe 4 of even layout along the filter tank madial wall, its upper end is communicated with the through hole of dividing plate 3, and its lower end and an annular backup pad 10 (see figure 2) that is tightly connected is managed and had equally distributed inlet opening on 4 sidewalls, manage 4 outward also figure above-mentioned filter screen is arranged.Center water distributor 6 and collector pipe 4 are made by carbon steel or stainless steel.Be provided with visor 13, charging hole 14 and manhole 15 (see figure 3)s in the outside of filter tank.Collector pipe 4 has 12 in the present embodiment, and about 30 ° of each intervals are evenly arranged, the caliber of pipe 4 is φ 50, has the aperture on the pipe 4 and be inlet opening 50-80 of φ 10.The caliber of center water distributor 6 is φ 150-200, has apopore 500-800 of φ 10 on the pipe 6.Diameter D 〉=the 1m of cylindrical shell 12, collector pipe 4 height H 〉=1m.The packed height of suspended filter material 5 is (H+0.3) m, makes its lower surface and collector pipe 4 bottom discrepancy in elevation h=0.3m, and the height of cylindrical shell 12 is 2H.

In the utility model, muddy water is flowed into by the water inlet pipe 9 of filter tank bottom, and from the apopore ejection of center water distributor 6, the water purification after suspended filter material 5 filters injects collector pipe 4 by the inlet opening of collector pipe 4, by outlet pipe 1 outflow on filter tank top.Its maximum filtering area is about half of lateral area of cylindrical shell, be F=π (D-2d) H, wherein H is the height of collector pipe, d is the diameter of collector pipe, and d=0.05D, this shows, under the identical condition of the suspended filter material volume of filling, and satisfy H 〉=0 in design, filter area then of the present utility model is about 3.6 times of existing filter filter area, i.e. F/F ₉=π (D-2d) H/1/4 π D ²=3.6H/D, when H 〉=D, F/F ₉〉=3.6.Compare with existing plain filter, under filtering velocity the same terms, flow can improve 2.6 times.This filter is a radial filter, and flow equates on each hoop cross section of filtering layer, and filtering velocity alters a great deal.Filtering velocity V and its radius r on each hoop filtering surface are inversely proportional to (by 2 π r ₁Hv ₁=2 π r ₂Hv ₂, draw v ₁/ v ₂=r ₂/ r ₁), promptly center water distributor outer wall filtering velocity is the highest, and the filtering velocity at the tube wall place that catchments is minimum, and the filtering velocity that outer shroud is lower makes that the less impurity of particle diameter does not penetrate filtering layer in the muddy water, guarantees the water quality of pure water.The higher filtering velocity of interior ring can make the outstanding absurd creature in the muddy water penetrate thicker filtering layer again.Along with the prolongation of time, what interior ring was held back in the filtering layer is big particle diameter suspension, and what middle ring was held back is the suspension of big or middle particle diameter, and what outer shroud was held back is the suspension of path.When the filtering layer loss of flood peak reached a certain set-point, filtering layer had been finished a filter cycle, and this moment, big portion filtering layer all can have more dirt, and the filtering layer containing filth amount is bigger, and whole filtering layer containing filth amount is improved.With the plain filter ratio, under the identical situation of the average containing filth amount of filtering layer, the loss of flood peak is much smaller, and when the loss of flood peak equated, the average containing filth amount of filtering layer improved greatly.Make by above-mentioned two reasons to the utlity model has very high filter efficiency, and water consumption is low.

Claims

1. efficient water-purifying filter, it comprises one by cylindrical shell (12) and last, the filter tank that low head (2) and (8) connect to form, its two ends are provided with into, outlet pipe (9) and (1), the filter tank internal upper part is provided with dividing plate (3), the bottom is provided with filter screen (7), the middle part is filled with suspended filter material (5), and be provided with filtrate Flushing nozzle (11), it is characterized in that it circumferentially has equally distributed through hole in dividing plate (3) upper edge, be provided with center water distributor (6) in filter tank central authorities, its upper end is tightly connected with dividing plate (3), its lower end is connected with water inlet pipe (9), have equally distributed apopore on pipe (6) sidewall, pipe (6) is outer to be with filter screen, is provided with the collector pipe (4) of even layout along the filter tank madial wall, its upper end is communicated with the through hole of dividing plate (3), its lower end and an annular backup pad (10) are tightly connected, and have equally distributed inlet opening on pipe (4) sidewall, the outer filter screen that is with of pipe (4).

2. according to the said a kind of efficient water-purifying filter of claim 1, it is characterized in that the diameter D 〉=1m of said cylindrical shell (12), the height H 〉=1m of collector pipe (4), the packed height of the filter outer (5) that suspends is (H+0.3) m.

3. according to claim 1 or 2 said a kind of efficient water-purifying filters, the caliber that it is characterized in that said center water distributor (6) and collector pipe (4) is respectively 150-200mm and 50mm, have equally distributed aperture on the center water distributor (6) and be apopore 500-800 of 10mm, be provided with (4) 12 of collector pipes, 30 ℃ of each intervals, evenly arrange, have equally distributed aperture on the collector pipe (4) and be inlet opening 50-80 of 10mm.