CN2756295Y - Down flow type deep sand filter - Google Patents
Down flow type deep sand filter Download PDFInfo
- Publication number
- CN2756295Y CN2756295Y CN 200420028624 CN200420028624U CN2756295Y CN 2756295 Y CN2756295 Y CN 2756295Y CN 200420028624 CN200420028624 CN 200420028624 CN 200420028624 U CN200420028624 U CN 200420028624U CN 2756295 Y CN2756295 Y CN 2756295Y
- Authority
- CN
- China
- Prior art keywords
- sand
- filter
- sand filter
- filtering
- collecting layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model relates to a down flow type depth sand filter. The size of filtering medium sand is gradually reduced from top to bottom. The lower side of the minimum filtering sand is provided with a collection layer, so that a partition plate at the bottom is prevented from blocking, regeneration interval is prolonged, filtering speed is enhanced and the size of the sand in the collection layer is gradually enlarged from top to bottom. A fluid body enters a filtering layer of the sand filter, gradually removes suspended substances with different sizes, passes through the collection layer, is collected at an outlet and flows out. The sand filter is composed of an inlet and an outlet passages, the filtering layer, the collection layer, a floor drain, a wall body, etc. The utility model helps the down flow type depth sand filter to stably and economically run via the fresh water supplying method of water resource under the ground. The utility model is suitable for the occasion that sand filtration is carried out in the economic way, particularly the occasion with high using frequency, or the occasion intermittently using a filter.
Description
Technical field
The utility model belongs to water filtering device, particularly a kind of downflow system depth-type sand filter that is provided with the collecting layer.
Background technology
Sand filter is easy and economic filter.Traditional sand filter basic structure is covered with bigger stone and tiny stone below being, is covered with coarse sand or fine sand above.Convenience and the backwash design of following structure for collecting filtered water, top coarse sand or fine sand play a role in filtering.Filtering direction is from top to bottom, and system be need regenerate the time, uses greater than the flow backwash of normal filtration speed or air purge or air purge and washing in conjunction with removing the stifled thing of decontamination.The washing direction is from top to bottom.
In the area of water supply anxiety, be that the water supply method of 03144378.8 rainwater groundwater resourcesization is the most promising solutions with application number.But rainwater treatment device is a difficult problem.Wherein, the operation of sand filter is crucial technology.
Tradition sand filter equipment exists: 1. contamination capacity is little, the filtered water change of water quality is big.2. dirty easily stifled, backwash will be equipped with backwashing pump, pipeline and valve, and air purge also needs air blast.Water use efficiency low, discharge pollutants many.4. complex structure.5. defective such as equipment manufacturing cost and cost of water treatment height.Make it can't economical operation in the water supply method of rainwater groundwater resourcesization.
The depth-type sand filter (200310106624.3) that the size of sand is reduced to characteristics gradually along with the flow direction of normal filtration fluid has solved the above-mentioned shortcoming of traditional sand filter substantially, and wherein, downflow system depth-type sand filter structure is simpler, and is easy to use.But because the sand grains of downflow system depth-type sand filter minimum is in the bottom of the terminal sand filter of normal current, thus the difficulty that is provided with of bottom baffles caused, because the filtration pressure difference of the too little easy increase sand filter of clapboard aperture also causes the obstruction of dividing plate easily.
Summary of the invention
The utility model is the shortcoming that has overcome above-mentioned existing sand filter, a kind of downflow system depth-type sand filter that is provided with the collecting layer according to requirements such as practicality, safety proposition, be characterized in being provided with the collecting layer under the downflow system depth-type sand filter smallest particles layer of sand, the size of collecting layer sand increases from top to bottom gradually.Below structure of the present utility model etc. is described in detail:
Original downflow system depth-type sand filter is made up of the import and export of body of wall, filtrate sand, filter, floor drain, lid, dividing plate etc.According to circumstances, lid and dividing plate can be cancelled.The collecting layer that replenishes place the thinnest fine sand of downflow system depth-type sand filter filter medium (as, 0.05 millimeter) below.It is characterized in that from the size of top, collecting layer sand grains few greater than the thinnest sand of filter (as, 0.1 millimeter), and down increase gradually.Undermost sand size is beneficial to collect filtered water or be convenient to install lower partition and is advisable, as 10 millimeters.Collecting layer sand size can continuously or be interrupted layering and be increased.Because the non-filtration of its function is so its thickness is unsuitable blocked up, as 150 millimeters.
Installation is provided with the downflow system depth-type sand filter of collecting layer, keep flat reliable depth-type sand filter body of wall, put well floor drain and bottom dividing plate up successively the shop put bigger sand and tiny sand is done the collecting layer, the sand that the minimum of filter course is installed then arrives the given degree of depth, shake up, beat in fact, up install by same sequence again.Lid or shield as required are installed behind the maximum filtration sand.
The downflow system depth-type sand filter that this patent is provided with the collecting layer has the following advantages:
1. prevent fine sand and sludge blockage bottom baffles, prolong regeneration at interval, stable quick the filtration.
2. can fully phase out bottom baffles, directly play the effect of collecting filtered water by the collecting layer.
Above advantage makes it help the stable operation of downflow system depth-type sand filter in the water supply method of rainwater groundwater resourcesization.
Description of drawings
Fig. 1 is the schematic diagram that is provided with the downflow system depth-type sand filter of collecting layer.The downflow system depth-type sand filter by import 1, particle from top to bottom the size reduce gradually filter course (as, form by the loud sand region 2 of filter course, medium sand district 3, fine sand district 4 etc.), gathering ground 5, outlet 6, baffle plate 7, dividing plate 8, body of wall 9, floor drain 10 and particle from top to bottom the collecting layer 11 that increases gradually of size (as, medium sand district 12 and loud sand region 13 by the collecting layer are formed, and see Fig. 2) form.
The specific embodiment
Water to be filtered enters from import 1, the filter course that the process granular size reduces is from top to bottom gradually progressively removed suspension and (is removed the bulky grain suspension as the loud sand region 2 at filter course, the medium grain suspension is removed in medium sand district 3, small granular suspended matters is removed in fine sand district 4) after enter collecting layer 11 (as medium sand district 12, the loud sand region 13 of collecting layer), enter gathering ground 5 after progressively compiling, go out product water from exporting 6 by floor drain 10.Baffle plate 7 prevents that dust from entering filter, and dividing plate 8 prevents the effect that the sand grains that differs in size mixes, and both are not the parts that must have.Body of wall 9 supporting filters.
Comparative Examples:
The square column type downflow system depth-type sand filter function ratio that is provided with and is not provided with the collecting layer, as shown in Figure 1, body of wall 9 and outlet pipe 6 usefulness glass are made, 1 millimeter of wall thickness, be provided with 100 millimeters of loam cake 7 length above, wide 80 millimeters, 100 millimeters of the square body length of sides, high 350 millimeters, in adorn three layers of sand, upper strata loud sand region 2 sand grains size is the 2-0.3 millimeter, 50 millimeters thick, medium sand district, middle level 3 sand grains size is the 0.3-0.1 millimeter, 50 millimeters thick, lower floor's fine sand district 4 sand grains size is the 0.1-0.01 millimeter, 150 millimeters thick, the bottom, it is 0.01 millimeter that the aperture is respectively used on middle part and top, 0.1 the polyester sheet dividing plate 8 of millimeter and 0.3 millimeter 1 millimeters thick, voidage 20% is not provided with scarce 11 of collecting layer.Get 20 liters of rivers behind the heavy rain, ss suspended solid 2000ppm, enter depth-type sand filter from import 1, along with water is past dirty from bottom, mainly big-and-middle sand grains layer is trapped big suspension on the upper strata, and tiny suspension is mainly held back at the fine sand layer 5 of bottom, after dividing plate 8 and gathering ground 5 collections, outlet 6 below floor drain 10 is flowed out, and obtains clean water, ss suspended solid 20ppm.But bottom baffles stops up after filtering 5 liters, can't carry out work, haves no alternative but the regenerated from washing filter.The downflow system depth-type sand filter of collecting layer is set, does not spread dividing plate below the thinnest filter medium sand, and collecting layer 11 is set, form by two-layer sand up and down.Upper strata 12 sand grains size 0.1-0.4 millimeter, 20 millimeters thick, lower floor's 13 sand grains size is 0.6-5 millimeter 30 millimeters thick, its clapboard aperture size of spreading below is 3 millimeters, voidage 20%.Same water quality can be filtered 15 liters, obtains the filtered water of same high-quality, illustrates that being provided with of collecting layer can prolong the regeneration interval or prolong useful working life.
Claims (4)
1. a downflow system depth-type sand filter is made up of filter course, gathering ground, outlet, body of wall and floor drain that import, sand granular size reduce from top to bottom gradually, it is characterized in that: be provided with the collecting layer below the thinnest filter medium sand.
2. downflow system depth-type sand filter according to claim 1 is characterized in that the collecting layer is made up of the sand that granular size increases from top to bottom gradually.
3. downflow system depth-type sand filter according to claim 1 is characterized in that the filter course filtrate sand granular size of the sand granular size on top, collecting layer greater than minimum.
4. downflow system depth-type sand filter according to claim 1 is characterized in that sand size layering of described collecting layer or increase continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028624 CN2756295Y (en) | 2004-03-29 | 2004-03-29 | Down flow type deep sand filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028624 CN2756295Y (en) | 2004-03-29 | 2004-03-29 | Down flow type deep sand filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2756295Y true CN2756295Y (en) | 2006-02-08 |
Family
ID=35964683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420028624 Expired - Fee Related CN2756295Y (en) | 2004-03-29 | 2004-03-29 | Down flow type deep sand filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2756295Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728111A (en) * | 2011-04-11 | 2012-10-17 | 北京仁创铸造有限公司 | Combined sand filtration apparatus |
-
2004
- 2004-03-29 CN CN 200420028624 patent/CN2756295Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728111A (en) * | 2011-04-11 | 2012-10-17 | 北京仁创铸造有限公司 | Combined sand filtration apparatus |
| CN102728111B (en) * | 2011-04-11 | 2015-05-20 | 北京仁创砂业科技有限公司 | Combined sand filtration apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207512052U (en) | A kind of gardens rain water collecting system | |
| CN109372087B (en) | Non-point source sewage control catch basin | |
| CN110559702A (en) | Adjustable composite dynamic filtering device | |
| CN207371173U (en) | A kind of self-cleaning filtering water system | |
| US5252230A (en) | Granulated filter for the filtration of fine graded suspensions | |
| CN217661690U (en) | Prevent filtration purifier that hardens | |
| CN2756295Y (en) | Down flow type deep sand filter | |
| CN2403480Y (en) | Cross flow sieve filter for sewage containing oil | |
| CN210905117U (en) | Adjustable composite dynamic filtering device | |
| CN105712582A (en) | Reverse-size deep bed filter pool applied to sewage treatment plant upgrading and reconstruction | |
| CN212742815U (en) | A block dirty device of decontaminating for road receipts mouth of a river | |
| CN2748149Y (en) | Upper flow type deep molding sand filter | |
| CN209906480U (en) | Water tank with filtering function | |
| CN219825539U (en) | Catch basin with water purification function | |
| CN2179779Y (en) | Deep-bed filter | |
| CN2885379Y (en) | High performance pressurized air filter | |
| CN102258912B (en) | Gill type filter | |
| CN2719816Y (en) | Precipitating-filtering integrated water treating device | |
| CN111632430B (en) | Modular inclined plate type efficient sewage precipitation process based on different media | |
| CN2177708Y (en) | Water purifier | |
| CN114405078B (en) | Multistage rotational flow particle suspended matter discharge device and process thereof | |
| CN2557207Y (en) | Sewage filtering and reusing device | |
| CN219815581U (en) | Novel sewage filtration system | |
| CN216739846U (en) | Rainwater collection and recycling device | |
| CN2699973Y (en) | Highly effective filtering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060208 |