CN100431657C

CN100431657C - A filter tank

Info

Publication number: CN100431657C
Application number: CNB2006100504494A
Authority: CN
Inventors: 俞建德; 洪积深; 马立峰; 王建峰
Original assignee: DEAN NEW-TECHNOLOGY DEVELOPMENT Co Ltd ZHEJIANG
Current assignee: Zhejiang Dean Technology Co., Ltd.
Priority date: 2006-04-21
Filing date: 2006-04-21
Publication date: 2008-11-12
Anticipated expiration: 2026-04-21
Also published as: CN1864794A

Abstract

The present invention discloses a filter basin which comprises a filter chamber (1), a water inlet tank (2) arranged above the filter chamber (1), and a backwashing water dispensing device at one side of the filter chamber, wherein the filter chamber (1) orderly comprises a blocking device for filtering material (3), a filter layer (4), a supporting device for filter material (5), and an air/water chamber (6) from top to bottom, wherein the upper layer of the backwashing water dispensing device is provided with a backwashing drain tank (7) adjacent to the blocking device (3) for filtering material; the lower layer of the backwashing water dispensing device is provided with an air/water distributing channel (8) communicated with the air water chamber (6); the blocking device for filtering material (3) arranged on the filter layer (4) in an inclined mode towards the backwashing drain tank (7) extends to the rim of the backwashing drain tank (7). Compared with the prior art, the present invention causes backwashing water to overflow from the blocking device for filter material to flow into the backwashing drain tank; the backwashing water can not stay on the blocking device for filter material, and thus, the present invention thoroughly avoids the result that impurities deposit on the blocking device for filter material again, effectively prevents impurities from being clogged in the blocking device for filter material, and ensures backwashing effects.

Description

A kind of filtering ponds

Technical field

The present invention relates to the technical field of water treatment, relate in particular to a kind of filtering ponds.

Background technology

Filtering ponds all have very critical role in fields such as town water supply processing, industrial water supply processing, industrial cycle water treatment, sewage disposal.Present the most frequently used filtering ponds, mostly by the pond body, the filtrate filtering layer, filtrate bearing device and the compositions such as water dispensing apparatus that are used for the backwash filtrate, filtrate generally adopts quartz sand, various materials such as anthracite or fiber filtering, as the patent No. is that the Chinese invention patent " a kind of fibrous filtering pool " of ZL200510049755.1 (publication number is CN1712096A) discloses a kind of filtering ponds that adopt fiber filtering, it includes the filter chamber, the intake chamber of top, filter chamber and the backwash water dispensing apparatus of filter chamber's one side, this filter chamber comprises retaining filtrate device from top to bottom successively, filtering layer, the gentle hydroecium of filtrate bearing device, wherein, on the filtrate bearing device between the gentle hydroecium of filtering layer, be furnished with strainer head uniformly toward contact, this backwash water dispensing apparatus comprises the channel of two-layer setting up and down, be that the upper strata is and the adjacent backwash rhone of retaining filtrate device the air water distributing channel of lower floor for being connected with the air water chamber.These filtering ponds are when backwash, air water in the air water distributing channel is from the intercommunicating pore of itself and air water chamber, be air distribution hole and distributing hole, enter the air water chamber, wash filtrate by the strainer head on the filtrate bearing device then, current promptly overflow through the retaining filtrate device above the filtering layer, thereby flow into the backwash rhone of a side.

But when practice, because of retaining filtrate device also has with a certain distance from the top of the cell wall of backwash rhone, the current that come out from the filtering layer backwash, must be among delay certain hour on the retaining filtrate device just can spill into the backwash rhone, so, impurity in the part backwashing water can be deposited to again on the retaining filtrate device again, and some even process are kept off the filtrate device and flowed back among the filtering layer, reduce the effect of backwash greatly; And after the time was permanent, retaining filtrate device also had increasing impurity and stops up wherein, can directly influence the normal filtration of filtering ponds.

On the other hand, the backwash G﹠W is evenly distributed to and the bottom of whole filtering layer by the strainer head on the filtrate bearing device, thus the flushing filtrate.Existing strainer head generally is the hollow tube that a head is provided with the filter cap, does not possess specially and carries out the function that size is cut apart at bubble, and apparent, the tiny more distribution of backwash bubble is even more, and is more remarkable to the scouring effect of filtrate.

Summary of the invention

First technical problem to be solved by this invention is to provide a kind of impurity that can effectively prevent to be blocked among the retaining filtrate device, to guarantee the filtering ponds of backwash effect at above-mentioned prior art present situation.

Second technical problem to be solved by this invention provides that a kind of backwash bubble is more tiny, filtering ponds more uniformly distribute.

The present invention solves the technical scheme that above-mentioned first technical problem adopts: these filtering ponds, include the filter chamber, the intake chamber of top, filter chamber and the backwash water dispensing apparatus of filter chamber's one side, this filter chamber comprises retaining filtrate device from top to bottom successively, filtering layer, the gentle hydroecium of filtrate bearing device, wherein, this backwash water dispensing apparatus comprises the channel of two-layer setting up and down, be that the upper strata is and the adjacent backwash rhone of described retaining filtrate device, the air water distributing channel of lower floor for being connected with described air water chamber, it is characterized in that: described retaining filtrate device is to being arranged on the described filtering layer that the backwash rhone tilts, and extends on the edge of described backwash rhone always.

Wherein, for improving the utilization rate of channel, be more suitable for practical application, described filter chamber can be by the backwash water dispensing apparatus, be that double-deck middle channel separates and is symmetrical arranged into two, both sides at described air water distributing channel middle part are provided with air distribution hole, and the both sides of its bottom are provided with distributing hole, and described air water chamber and air distribution hole and distributing hole are connected.

For thoroughly removing the impurity and the dirt that are deposited on the retaining filtrate device, the outside of described retaining filtrate device can be provided with flushing pipe, have many apertures on this flushing pipe, after the current of band certain pressure were ejected in the aperture of flushing pipe on the retaining filtrate device endlessly, its lip-deep impurity and dirt also were washed among the backwash rhone thereupon.

For further solving second above-mentioned technical problem, between described filtrate bearing device and filtering layer, can be provided with rubble English layer of sand, like this, when backwash gas passes through rubble English layer of sand, bigger bubble just constantly is divided into tiny bubble by thick quartz sand, upwards enter from the gap of thick quartz sand in the filtering layer, it is also more even to distribute, and fine and smooth minute bubbles wash away fully to filtrate.

When practice, sometimes backwash air water local pressure is more violent, impulsive force to thick quartz sand is stronger, and the position of so thick quartz sand can be offset a little, causes the distribution became uneven of rubble English layer of sand even, for preventing the skew of rubble English layer of sand, guarantee the even distribution of stone layer, can be provided with baffle plate on the described rubble English layer of sand, have the through hole that is slightly less than thick quartz sand size on this baffle plate, can guarantee passing through of current and bubble like this, but stop passing through of thick quartz sand.

In addition, the intake chamber of existing filtering ponds is arranged on a side of top, filter chamber, and it is generally V-shaped, because of intake chamber is distributed in filter chamber's one side, filtering former water can only be from the monolateral inflow in filter chamber top, filters former water and can be distributed to more uniformly among the filtering layer for making, and described intake chamber can be arranged on the Centromedian channel in top, filter chamber, the former water of this spline filter just can spill into from the intake chamber among the filtering layer uniformly, has improved filter efficiency.

Because of filtering ponds often are based upon in the outdoor open-air place, and daylight meeting direct irradiation is on the filtering ponds surface, time one is of a specified duration, current in the filtering ponds can grow algae, for preventing that filtering ponds from producing unnecessary impurity, described filtering ponds also include and are arranged on top, filter chamber sky shade, and this sky shade can adopt common puggaree, directly is fixed on outer the placing of filtering ponds pond body.Setting up of sky shade also can make adverse weather conditions such as filtering ponds opposing wind and rain and sand and dust, is suitable for more being installed under the open-air condition and uses.

Compared with prior art, the invention has the advantages that: by being obliquely installed of retaining filtrate device, and extend on the backwash rhone always, make backwashing water from flowing into immediately after retaining filtrate device overflows among the backwash rhone, can on retaining filtrate device, not be detained in the backwashing water, thereby thoroughly avoided impurity to be deposited to the consequence of keeping off on the filtrate device again, prevented that effectively impurity is blocked among the retaining filtrate device, guarantees backwash effect; Simultaneously, the setting up of rubble English layer of sand on the filtrate bearing device makes the bubble in the backwash air water be divided into littler bubble, and it is also more even to distribute, and can well wash away filtrate, thereby improves backwash effect; And setting up of this sky shade makes filtering ponds be suitable for more being installed under the open-air condition and uses.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is the structural representation of flushing pipe in the embodiment of the invention.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, these filtering ponds, comprise that being provided with two double-deck middle channels by two-layer setting up and down separates and symmetrically arranged filter chamber 1, the intake chamber 2 of 1 top, filter chamber and the sky shade 12 that covers 1 top, filter chamber, this filter chamber 1 comprises retaining filtrate device 3 from top to bottom successively, filtering layer 4, filtrate bearing device 5 gentle hydroeciums 6, this bilayer middle channel is the backwash water dispensing apparatus, its upper strata is the backwash rhone 7 adjacent with retaining filtrate device 3, the air water distributing channel 8 of lower floor for being connected with air water chamber 6, both sides at air water distributing channel 8 middle parts are provided with air distribution hole 8a, and the both sides of its bottom are provided with distributing hole 8b, described air water chamber 6 is by this air distribution hole 8a and distributing hole 8b and be connected with air water distributing channel 8, referring to Fig. 1;

Wherein, in the present embodiment, described intake chamber 2 is arranged on the Centromedian channel in 1 top, filter chamber, is evenly equipped with strainer head 5a on the described filtrate bearing device 5, and what place in the described filtering layer 4 is fiber filtering;

And, described retaining filtrate device 3 is to being arranged on the filtering layer 4 that backwash rhone 7 tilts, and extends on the edge of backwash rhone 7 always, and in the arranged outside of retaining filtrate device 3 flushing pipe 9 is arranged, referring to Fig. 2, have many aperture 9a on this flushing pipe 9;

Between described filtrate bearing device 5 and filtering layer 4, be provided with rubble English layer of sand 10, be that rubble English layer of sand 10 is tiled on the filtrate bearing device 5 and directly contacts with strainer head 5a, and also be provided with baffle plate 11 on this rubble English layer of sand 10, have the through hole 11a that is slightly less than thick quartz sand size on this baffle plate 11, thereby stop 10 skews of rubble English layer of sand, guarantee that rubble English layer of sand 10 is evenly distributed all the time.

Claims

1, a kind of filtering ponds, include filter chamber (1), the intake chamber (2) of top, filter chamber (1) and the backwash water dispensing apparatus of filter chamber's (1) one side, this filter chamber (1) comprises retaining filtrate device (3) from top to bottom successively, filtering layer (4), the gentle hydroecium of filtrate bearing device (5) (6), wherein, this backwash water dispensing apparatus comprises the channel of two-layer setting up and down, be that the upper strata is the backwash rhone (7) adjacent with described retaining filtrate device (3), the air water distributing channel (8) of lower floor for being connected with described air water chamber (6), it is characterized in that: described retaining filtrate device (3) is to being arranged on the described filtering layer (4) that backwash rhone (7) tilts, and extends on the edge of described backwash rhone (7) always.

2, filtering ponds according to claim 1 is characterized in that: the arranged outside of described retaining filtrate device (3) has flushing pipe (9), has many apertures (9a) on this flushing pipe (9).

3, filtering ponds according to claim 1 is characterized in that: be positioned between described filtrate bearing device (5) and the filtering layer (4) and be provided with rubble English layer of sand (10).

4, filtering ponds according to claim 3 is characterized in that: be provided with baffle plate (11) on the described rubble English layer of sand (10), have the through hole (11a) that is slightly less than thick quartz sand size on this baffle plate (11).

5, according to the described filtering ponds of arbitrary claim in the claim 1 to 4, it is characterized in that: described intake chamber (2) is arranged on the Centromedian channel in top, filter chamber (1).

6, according to the described filtering ponds of arbitrary claim in the claim 1 to 4, it is characterized in that: also include the sky shade (12) that is arranged on top, described filter chamber (1).

7, filtering ponds according to claim 5 is characterized in that: also include the sky shade (12) that is arranged on top, described filter chamber (1).