CN2693750Y

CN2693750Y - Water and air distributing device with filter tank having air-water back flush function

Info

Publication number: CN2693750Y
Application number: CN 200420044070
Authority: CN
Inventors: 施能赏
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-23
Filing date: 2004-03-23
Publication date: 2005-04-20
Anticipated expiration: 2014-03-23

Abstract

A water and air distributing device with a filter tank having air-water back flush function comprises a water service and air distributing pipe and a water service and air distributing pipe group; the bottom of the water service and air distributing pipe is provided with drainage holes, and the lateral wall of the water service and air distributing pipe is provided with back flush stomata, and the top of the water service and air distributing pipe is provided with air exit holes. One end of the water service and air distributing pipe group is installed in the assembly hole of the water service and air distributing pipe, and the water service and air distributing pipe group comprises a collective water service pipe and an air distributing pipe. The collective water service pipe is communicated with the under-ground collective water service slot of the filter tank, and the air distributing pipe is provided with air distributing holes and is communicated with the air-bed inlay formed by the under-ground collective water service slot of the filter tank. Because the back flush stomata and the drainage holes on the water service and air distributing pipe are not directly relative to the filter layer in the filter tank, the air or water needs to bend before going up and the air or water is reallocated after going through the supporting layer of the filter tank, therefore, having enough time for adequate distribution. The air and water can uniformly charge into the filter layer and no clean-up blind angle exists. The dirt exfoliated from the filtering materials does not enter into the water service and air distributing pipes from the back flush stomata or drainage holes and does not pollute the water quality.

Description

Water and air distributing device with air-water backwashing function filter tank

Technical field

The utility model relates to a kind of water and air distributing device with air-water backwashing function filter tank.

Background technology

The filter tank is requisite water treating equipment in city water, wastewater treatment and the industrial production.And the filter tank is by the filtration and the adsorption of filtrate water to be carried out filtration treatment, therefore work as filtrate in use for some time, can accumulate some dirts on the filter material layer, to influence effluent quality and output like this, at this moment will carry out back flushing to the filter tank, so that the Fouling Cleaning that will be deposited on the filter material layer is fallen.Common filtrate purging method has: make water pass filtering layer from bottom to up in whole filtering layer plane, filtering layer is partly or entirely suspended, under the effect that the mutual collision friction and the current of filtering material particle are sheared, filtrate is rinsed well, if in this process, make air participate in flushing process together simultaneously, be air-water backwashing, then developing result is better.

In the prior art, the air water back washing cleaning device is that the back flushing water inlet pipe is set below the filtering layer in filter tank, have some through holes at the top of this water inlet pipe, when carrying out back flushing, the top through hole of air-water mixture by this water inlet pipe washed perhaps advanced air to filtering layer, filtrate is become flexible makes dirt peel off simultaneously, and then water inlet simultaneously, with air-water mixture dirt is poured the filtering layer top layer, again sewage is discharged by sewage draining exit.Yet but there is following shortcoming in this backwash process:

1, directly rush at filtering layer owing to have the air water of certain pressure by described through hole, and have the gap of arranging between each through hole, therefore make flushing inhomogeneous, the filtrate dirt that directly is flushed to easily peels off, and rest part then is difficult for rinsing well, has the flushing dead angle.

2, back flushing water inlet pipe top is directly relative with filtering layer in order to the through hole of the water outlet of giving vent to anger, dirt under peeling off from filtrate very easily enters in the back flushing water inlet pipe from this through hole, and this back flushing water inlet pipe is actually the clear water rising pipe in the filtration procedure, therefore easy polluted water.

3, owing to the uneven phenomenon of existence flushing, and, often need a large amount of water of use to wash, perhaps increase the back flushing frequency for rinsing well, so time-consuming and waste.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of water and air distributing device with air-water backwashing function filter tank, and the setting of this device makes back flushing evenly, not have flushing dead angle and can polluted water.

For solving the problems of the technologies described above, technical solution of the present utility model is: a kind of water and air distributing device with air-water backwashing function filter tank comprises water and air distributing pipe and water and air distributing pipe group; The bottom of this water and air distributing pipe has the water hole, and its sidewall has the back flushing pore, and its top then has venting hole; And an end of water and air distributing pipe group is seal-installed in the pilot hole of water and air distributing pipe, it comprises collection water distributing pipe and gas distribution pipe, this collection water distributing pipe communicates with the ground next part distributing trough in filter tank, communicates with the air cushion layer that the ground next part distributing trough in filter tank forms and have qi-emitting hole on the gas distribution pipe.

The cross section of this water and air distributing pipe is circular.

The cross section of this water and air distributing pipe is inverted U-shaped; And bottom surface or sidewall bottom in the water and air distributing pipe are opened in described water hole.

After adopting such scheme, the utility model is compared than known techniques has following advantage:

1, because back flushing pore and water hole on the water and air distributing pipe are located at its sidewall or bottom surface, and be not to be located at its top, air water with certain pressure needs earlier, and bending makes progress again, reallocate with supporting layer, thereby the time enough uniform distribution is arranged, therefore this air water can rush at filtering layer uniformly, does not have any flushing dead angle.

2, because the back flushing pore on the water and air distributing pipe is directly directly not relative with filtering layer with the water hole, the dirt under peeling off from filtrate can not enter in the water and air distributing pipe from this back flushing pore or water hole, therefore can polluted water yet.

3, owing to there is not the uneven phenomenon of flushing, so this back flushing can wash away filtering layer totally up hill and dale, and do not need frequently to carry out back flushing, and water consumption also significantly reduces.

4, water and air distributing pipe group integrates gas distribution pipe and collects water distributing pipe, can conveniently reach first air inlet to carry out air purge, intakes to mix the purpose of washing away to carry out air water again, and cost simple in structure is low.

Description of drawings

Fig. 1 is the structure sectional view in the utility model filter tank;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the sectional elevation of the utility model water and air distributing device;

Fig. 4 is the longitudinal section of the utility model water and air distributing device;

Fig. 5 is the sectional elevation of the utility model water and air distributing pipe;

Fig. 6 is the stereo appearance figure of the utility model water and air distributing pipe group.

Embodiment

Please as shown in Figure 1, 2, be placed with back flushing water inlet pipe 2, water and air distributing device 3, supporting layer 4 and filtering layer 5 from bottom to top successively in the filter tank 1 described in the utility model.Wherein:

1 below, filter tank is provided with ground next part distributing trough 11, and on the sidewall in filter tank 1, be positioned at filtering layer 5 above have mudhole, which is provided with mud valve 12, mudhole also is provided with drainage tray 13 outward.

Back flushing water inlet pipe 2 is located in the ground next part distributing trough 11, and its end that stretches out filter tank 1 is provided with water pipe 21 and inlet pipe 22.

Water and air distributing device 3 (shown in Fig. 3,4) comprises water and air distributing pipe 31 and water and air distributing pipe group 32; The shape of cross section of water and air distributing pipe 31 (as shown in Figure 5) is not limit, can be circular, inverted U-shaped or other any feasible shape, be example with inverted U-shaped among the figure, have water hole 311 in the bottom of this water and air distributing pipe 31, its sidewall has back flushing pore 312, its top then has the less venting hole in aperture 313, also has pilot hole 314 in the appropriate location of water and air distributing pipe 31 bottoms in order to water and air distributing pipe group 32 to be installed; And in the pilot hole that is installed on water and air distributing pipe 31 314 of water and air distributing pipe group 32 1 ends sealing, its other end is inserted in the ground next part distributing trough 11; This water and air distributing pipe group 32 (as shown in Figure 6) comprises the gas distribution pipe 322 of collection water distributing pipe 321 and lower end closed, this collection water distributing pipe 321 communicates with ground next part distributing trough 11, communicates with the air cushion layer that next part distributing trough 11 tops, ground form and have qi-emitting hole 323 on the gas distribution pipe 322.

The top carrying filtering layer 5 of supporting layer 4, filtering layer 5 comprises quartz sand 51 and hard coal 52.

The working process of filter tank 1 described in the utility model when filtering is:

close mud valve

12,1 top enters from the filter tank to make the filtering water of desire, the hard coal 52 and the quartz sand 51 of process filtering layer 5 filter successively again, enter supporting layer 4 belows through filtering clear water, water hole 311 by water and air distributing pipe 31 bottoms enters into water and air distributing pipe 31 inside (because the venting hole 313 at back flushing pore 312 on water and air distributing pipe 31 sidewalls and top is less, therefore clear water is mainly entered by the water hole 311 of its bottom), and then enter in the ground next part distributing trough 11 by the collection water distributing pipe 321 of water and air distributing pipe group 32, after the water pipe 21 of back flushing water inlet pipe 2 (being actually the rising pipe of filtration procedure) discharge, to finish filtration procedure.

The working process of filter tank 1 described in the utility model when carrying out back flushing is: air is entered in the ground next part distributing trough 11 by the inlet pipe 22 of back flushing water inlet pipe 2, and after forming air cushion layer at an upper portion thereof, qi-emitting hole 323 through the gas distribution pipe 322 of water and air distributing pipe group 32 enters into water and air distributing pipe 31 inside, owing to be full of water in the water and air distributing pipe 31 at this moment, the air that enters will at first be oppressed its indoor water and be discharged by water hole 311, small part is discharged and is directly passed supporting layer 4 by venting hole 313 and rushes at filtering layer 5, when dropping to back flushing pore 312 under water when following in the water and air distributing pipe 31, a large amount of gas is discharged by this back flushing pore 312, and bending is upward through supporting layer 4 and rushes at filtering layer 5, because this back flushing pore 312 is opened on the sidewall of water and air distributing pipe 31, gas is not directly to rush at filtering layer 5, but bending upwards, reallocation via supporting layer 4, therefore the time enough uniform distribution is arranged, thereby can rush at filtering layer 5 uniformly, make filtering layer 5 loosening and the dirt on it is peeled off; When air admission after for some time, backwashing water again by water pipe 21 in back flushing water inlet pipe 2 enters ground next part distributing trough 11, enter in the water and air distributing pipe 31 by collection water distributing pipe 321 then, and reach certain balance with the air on it, this backwashing water is discharged by water hole 311, and same reflexed upwards washes away filtering layer 5 with air, because the bottom of water and air distributing pipe 31 is located in this water hole 311, backwashing water is not directly to rush at filtering layer 5 equally, but reflexed upwards, at supporting layer 4 and air thorough mixing, and rushes at filtering layer 5 uniformly, make the dirt on the filtering layer 5 rush at filtering layer 5 tops, therefore do not have the flushing dead angle together with air-water mixture; When the sewage of filtering layer 5 tops runs up to when a certain amount of, open mud valve 12, it is discharged from drainage tray 13, thereby finish backwash process.

What deserves to be mentioned is: the water hole 311 of described water and air distributing pipe 31 is not necessarily as shown to be on the bottom surface of being located at water and air distributing pipe 31; also can be provided with the bottom of water and air distributing pipe 31 sidewalls; when backwashing water is discharged; equally will be through bending upwards again through the redistribution process of supporting layer 4, therefore also within protection domain of the present utility model.

Claims

1, a kind of water and air distributing device with air-water backwashing function filter tank is characterized in that: this device comprises water and air distributing pipe and water and air distributing pipe group; The bottom of this water and air distributing pipe has the water hole, and its sidewall has the back flushing pore, and its top then has venting hole; And an end of water and air distributing pipe group is seal-installed in the pilot hole of water and air distributing pipe, it comprises collection water distributing pipe and gas distribution pipe, this collection water distributing pipe communicates with the ground next part distributing trough in filter tank, communicates with the air cushion layer that the ground next part distributing trough in filter tank forms and have qi-emitting hole on the gas distribution pipe.

2, the water and air distributing device with air-water backwashing function filter tank as claimed in claim 1 is characterized in that: the cross section of this water and air distributing pipe is for circular.

3, the water and air distributing device with air-water backwashing function filter tank as claimed in claim 1 is characterized in that: the cross section of this water and air distributing pipe is inverted U-shaped.

4, as claimed in claim 3, it is characterized in that: this water hole is opened in the bottom surface of water and air distributing pipe or the sidewall bottom.