DE102009015867A1 - Filter assembly, for Koi fishpond water, has a chamber to clean the continuous filter loop moving with the belt between an upper mechanical filter chamber and a lower biological filter chamber - Google Patents

Abstract

The filter assembly (1) for the water of a fish pond, especially containing Koi fish, has a housing (2) with an upper chamber (3) for mechanical filtration through a woven filter and a lower biological filter chamber (4). The upper chamber has a powered continuous permeable belt (10) for water to be forced through a woven/nonwoven filter loop (14) by water pressure. The filtered water drops into the lower chamber and the filter loop passes through a third cleaning chamber (5) and around deflection rollers (15) to the start of the continuous belt.

Description

The The present invention relates to a filter system for filtration from the water of a fish pond, especially a koi fish pond with a filter housing which comprises at least two chambers, wherein in a first, upper chamber, a mechanical filtration and in a second, below arranged chamber a biological Filtration is carried out, with the mechanical filtration through the Flow of the water to be purified through a filter fabric or a filter fleece takes place.

filter systems for fish ponds are on the market in various designs available. For example, under the name Ultrabad UB40 a single-chamber filtration system known to be in a closed Tank admitted the water to be purified under pressure and swirled and thereafter by a multiplicity of floating filter balls rises above and is cleaned and sucked off. Here are the effect Filter balls on the one hand as a mechanical filtration and on the other they form a large settlement area for the required Bacteria that cause biodegradation.

Of Another is also developed, especially for Koi ponds, a drum filter of the company Hydrotech AS known in which in a Housing a sieve drum runs by the water to be purified inflows or is pumped in and through a special Cell structure of the drum, which is the mechanical filter element represents, mechanically cleaned and that by the cell structure streamed, mechanically purified water then enters an underneath biological filter chamber in which the biological Dismantling done. The drum structure is above the water level cleaned in the drum by water jet from outside the drum act and so by backflow the impurities be flushed out of the cell structure and into an inside the drum attached collecting channel passes and into a collecting container for solids is rinsed. Such a plant must be done to achieve the desired cleaning accordingly be made large, which has the disadvantage that such a facility visually disturbing. Because the backwash and the filtration is done within the same housing, are the noise emissions correspondingly large.

From the German publication DE 100 26 097 is a filter system is known, which can be assembled module by module. Here are in each module in the horizontal direction below each other, several filter compartments available. In this case, stationary filter mats are present in the individual filter compartments, in which both a mechanical and a biological filtration takes place, wherein the structure of the inserted filter mats is finer corrugated in each subsequent filter chamber. These filter mats must be replaced from time to time. Such modules can then be stacked on top of each other, but a cleaning of the system requires continuous maintenance.

The Applicant has recognized this problem and developed a filter system, which in detail on their homepage www.aquafil.org is shown. This filter system has two chambers, wherein in a first, upper chamber, a mechanical filtration and in a second, arranged below chamber, a biological filtration. The mechanical filtration is carried out by the flow of water to be purified through a filter fleece, which comes from a supply roll coming over a carrier conveyor belt, which is designed trough-like. As soon as the filter fleece has reached a certain degree of soiling, the water in the trough rises and as soon as a certain level is reached, the filter fleece is conveyed on by a predetermined distance. The purified water passes from the first chamber, in which the mechanical filtration is carried out, then in the second filter chamber, in which the biological degradation stage is housed. Once the entire web roll is used up, it must be replaced. Although this filter system works extremely effectively, it has the disadvantage that in case of prolonged absence there is a risk that the filter fleece is used up and there is no operator who could replace this filter fleece band.

From Based on this solution, the applicant has the task provided a filter system to create the same filter technology used, but no longer has the disadvantages mentioned.

These Task solves a filter system which is characterized by that in the first chamber a powered, water permeable Carrier conveyor belt is arranged, by means of which one under the water pressure of the adjacent, to be cleaned water non-positively conveyed, endless filter fabric or filter fleece in a third chamber, a cleaning chamber, can be transported by cleaning the filter fabric of the fleece and over pulleys below the carrier conveyor belt traceable to the beginning of the carrier conveyor belt is.

Further advantageous embodiments of the subject invention go from the dependent claims and their meaning and mode of action will be described in the following description explained with reference to the accompanying drawings.

In The attached drawing is schematically a preferred embodiment represented the subject invention.

It shows:

1 a schematic vertical section through the filter system and

2 the same plant in a view from above, and

3 a schematic view of the inlet side of the system.

The entire filter system is in total with 1 designated. This filter system 1 has a filter housing 2 which has at least two chambers. The filter housing 2 has an upper chamber 3 in which the mechanical filtration takes place and a lower chamber 4 in which the biological filtration takes place. One, the upper chamber after switched third chamber 5 serves as a cleaning chamber.

In the upper chamber 3 The water to be purified passes through an inlet 6 , The enema 6 For example, it may be closed via an upstream valve or, if an appropriate control circuit is present, controlled by this circuit so as to reduce or increase the amount of water to be purified. This upstream valve is not shown in the drawing. The water level N ₁ in the upper chamber 3 can for example by means of level sensors 7 be detected.

In the first, upper chamber 3 is a carrier conveyor belt 10 available. The upper chamber 3 has an inlet side wall 8th and one, this opposite partition 9 , The carrier conveyor belt 10 is preferably inclined from the near-ground area in the vicinity of the inlet side wall 8th to above the upper edge of the partition 9 , The carrier conveyor belt 10 has a lower circulation roller 11 and a drive roller 12 at the upper deflection point. This drive roller 12 is located above the dividing wall 9 in the area of the third chamber 5 , In between are several pulleys 13 available. The carrier conveyor belt 10 is laterally sealed to the bottom by means of sealing strips so that the water to be purified W ₁ inevitably by the carrier conveyor belt 10 must flow through it.

About the carrier conveyor belt 10 runs an endless filter fabric or filter fleece. The filter fabric or filter fleece forms a self-contained loop 14 , For the sake of simplicity, this filter fabric or filter fabric loop will be described below 14 briefly referred to as a filter loop. The closed filter loop 14 is shown in dashes. It runs directly on the carrier conveyor belt 10 to the drive roller 12 , Here she will be inside the third cleaning chamber 5 until near the ground parallel to this ground via guide rollers 15 directed. From here, the closed filter loop 14 guided back up and by means of pressure rollers 16 to the underside of the run of the carrier conveyor belt 10 pressed.

Between the two guide rollers 15 is in the chamber 5 a variety of over the entire width of the filter loop 14 distributed spray nozzles 18 arranged. These spray nozzles 18 act on the back of the filter loop 14 and so leach the contaminants on the front from the filter loop 14 out. That through the filter loop 14 Waste water along with the impurities gets into one under the third chamber 5 arranged collecting funnel 19 , From the collecting funnel 19 the rinse water enters a catch basin, not shown here, or drains 20 ,

In the cleaning chamber or the third chamber 5 Can additionally a second UV light emitter 30 be arranged to release certain microorganisms that are on the filter loop 14 have annihilated, kill. Partly killed microorganisms are better from the filter loop 14 flooding out as living microorganisms, which is why the arrangement of the or UV emitter 30 in the direction of movement of the filter loop 14 in front of the spray nozzles 18 is advantageous. Preferably, however, only one UV light emitter is provided in the vicinity of the outlet of the filter system, as will be described later.

The now cleaned again portion of the filter loop 14 is about the already mentioned pressure rollers 16 at the bottom of the carrier conveyor belt 10 created and transported by this. From the pressure rollers 16 leads the filter loop 14 now along a guide plate 17 , This guide plate 17 directs the filter loop 14 into the area of the soil 21 the upper chamber 3 , A piece is now the filter loop 14 parallel to the ground 21 guided and now reaches the lower circulation role 11 back. Here lies the filter loop 14 again on top of the carrier conveyor belt 10 on. The prevailing water pressure in the upper chamber 3 pushes the filter loop 14 on the carrier conveyor belt 10 , The filter loop 14 thus becomes non-positively by the driven carrier conveyor belt 10 transported further.

That through the filter loop 14 trickling water from the upper chamber 3 gets into one above the guide plate 17 but below the carrier conveyor belt 10 arranged drip tray 22 , This drip tray 22 has one overflow or several overflows 23 , Through the overflows 23 gets the so mechanically cleaned What into the second, lower chamber 4 , The existing water W ₂ is now being purified biologically. For this purpose are in the chamber 4 a large amount of support bodies available, which are not shown here. At these carriers store the bacteria that are required for the biodegradation of chemical impurities. These are in particular bacteria that are able to break down ammonia. Also in the lower chamber 4 the level N _{2 of} the water W _{2 is} monitored. For this purpose, for example, again a level sensor or as shown here, a float 24 to be available. The swimmer 24 can turn directly or indirectly on the enema 6 Act. Finally, this is now both mechanically and biologically filtered water via a return 25 returned to the pond T.

Preferably, the filter system according to the invention is operated essentially statically. In this case one speaks of a gravity model. Here, the level corresponds to the water level in the chamber 3 corresponds to the pond level. The water passes under the influence of gravity, through the filter system and is finally out of the chamber 4 pumped out into the pond. This version is preferred in order to be able to arrange sunk the technical equipment in the surrounding landscape, so that the filter system visually does not bother. In addition, the pump can then operate as a submersible pump below the water level, which also noise emissions are reduced. If such a solution is not possible in the pond design, the filter system can also be partially or completely placed above the pond level, in which case the pump regulates the water supply.

In the gravity versions, it is preferable to have two enemas 6 Provide, as this from the 2 and 3 is apparent. There are several floats available to regulate this supply. For one thing, there are two swimmers 24 present on valve plates 26 act and so the enemas 6 can throttle or close. If too much water passes through the mechanical filtration into the biological filtration, the level in the chamber rises 4 on, the swimmers 24 go up and the valve plates 26 throttle the water supply in which the enemas 6 partially or completely until they are closed. This will ensure that the biodegradation in the lower chamber 4 is sufficiently advanced before the water is pumped out of the chamber.

However, it is also possible that the Filtergewebe- or filter fleece loop 14 becomes less permeable after a certain period of operation. This can be done on the one hand by limescale and on the other hand by the fact that on the filter loop 14 forms a biofilm. If so, the water level N ₂ in the chamber drops 4 and there is a danger that the chamber 4 is pumped dry, the entire biology of biological filtration would suffer significant damage. For this purpose is in the biological filter stage in the lower chamber 4 a safety swimmer 27 available. This safety swimmer 27 protrudes with an overflow pipe 28 in the upper chamber 3 , Decreases the level in the lower chamber 4 below a given lower level N ₃ , water from the upper chamber flows directly into the biological degradation stage into the chamber bypassing the mechanical filtration 4 , This situation can be additionally detected with appropriate sensors and as soon as the sensor detects this condition, an optical or acoustic signaling can take place and additionally, for example, the delivery rate of the pump can be increased, as a result, an increased oxygen input into the water can take place. In any case, this will ensure that the water level in the chamber 4 does not fall below the minimum level N ₃ .

In the lower chamber 4 can be a first UV light emitter 29 be present, which is arranged near the outlet or return in the pond T. The microorganisms killed here reach the pond, where they are degraded or return to the filter system as floating particles and are filtered out as described above.

The Filter unit described here can be completely automatically monitor and the maintenance work is extremely low. Consequently, a pond owner can also easily for be absent for a long time without danger that his fish are poisoned by untreated water in the pond.

1

filter system

2

filter housing

3

upper chamber

4

lower chamber

5

third chamber

6

enema

7

level sensor

8th

inlet side wall

9

partition wall

10

Carrier conveyor

11

revolving roller below

12

capstan

13

guide rollers

14

Filtergewebe- or filter fleece loop = filter loop

15

deflection rollers

16

pressure rollers

17

guide plate

18

spray nozzles

19

receiving hopper

20

catch basin or sewerage

21

ground the upper chamber

22

drip tray

23

overflows

24

swimmer

25

returns

26

valve plates

27

safety float

28

Overflow pipe

29

UV light emitters, first

30

UV light emitters, second

W ₁

Water in chamber 3

W ₂

Water in chamber 4

N ₁

Water level in chamber 3

N ₂

Water level in chamber 4

N ₃

lower level

T

pond

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10026097 A [0004]

Cited non-patent literature

• - www.aquafil.org [0005]

Claims (11)

Filter system ( 1 ) for filtering water from a fish pond, in particular a Koi fish pond with a filter housing ( 2 ), which comprises at least two chambers, wherein in a first, upper chamber ( 3 ) a mechanical filtration and in a second, arranged underneath chamber ( 4 ) a biological filtration takes place, wherein the mechanical filtration takes place by the flow of the water to be purified through a filter fabric or a filter fabric, characterized in that in the first chamber ( 3 ) a powered, water-permeable carrier conveyor belt ( 10 ) is arranged, by means of which a under the water pressure of the adjacent water to be purified water positively promoted endless Filtergewebe- or filter fleece loop or filter loop ( 14 ) in a third chamber ( 5 ), a cleaning chamber, is transportable by the filter fabric or filter fleece loop ( 14 ) and via pulleys ( 15 ) underneath the carrier conveyor belt ( 10 ) to the beginning of the carrier conveyor belt ( 10 ) is traceable. Filter system ( 1 ) according to claim 1, characterized in that the carrier conveyor belt ( 10 ) from the inlet-side, ground-level area via an inlet ( 6 ) opposite partition wall ( 9 ) of the first chamber ( 3 ) into the third chamber ( 5 ) runs. Filter system ( 1 ) according to claim 1, characterized in that the endless filter fleece ( 14 ) when returning under a guide plate ( 17 ) through to the beginning of the carrier conveyor belt ( 10 ). Filter system ( 1 ) according to claim 3, characterized in that between the guide plate ( 17 ) and the carrier conveyor belt ( 10 ) a drip tray ( 22 ) is arranged, in which the mechanically filtered water is collected and laterally from the drip pan ( 22 ) by at least one overflow ( 23 ) into the lower chamber ( 4 ). Filter system ( 1 ) according to claim 1, characterized in that in the second chamber ( 4 ) at least one float ( 24 ) or level sensor is present over the supply of the water to be purified from the fish pond in the first chamber is regulated or controlled. Filter system ( 1 ) according to claim 1, characterized in that in the third chamber ( 5 ) the filter fabric or filter nonwoven loop ( 14 ) from the upper end of the carrier conveyor belt ( 10 ) is deflected downwards and in a ground-level area of this chamber ( 5 ) is charged from the back with clean water, which flooded the impurities of the filter fabric or fleece. Filter system ( 1 ) according to claim 6, characterized in that the clean water by means of spray nozzles ( 18 ) can be supplied under pressure. Filter system ( 1 ) according to claim 1, characterized in that in the lower chamber ( 4 ) on the leaking water UV rays ( 30 ) are directed. Filter system ( 1 ) according to claim 1, characterized in that the plant ( 1 ) is designed as a pumped or gravity version, the level (N ₁ ) in the first chamber ( 3 ) corresponds to the pond level and in the return ( 25 ) A pump is arranged. Filter system ( 1 ) according to claim 5, characterized in that the at least one float ( 24 ) with a valve plate ( 26 ), which controls the flow of water into the at least one inlet ( 6 ) throttles or closes if the water in the lower, second chamber ( 4 ) exceeds a predetermined level (N ₂ ). Filter system ( 1 ) according to claim 1, characterized in that in the second chamber ( 4 ) a safety swimmer ( 27 ) provided with an overflow nozzle ( 28 ) into the first chamber ( 3 ), whereby the water from the first chamber ( 3 ) bypassing the mechanical filtering by the overflow nozzle ( 28 ) can flow directly into the second chamber.