GB2146013A - Ashford bi-filter - Google Patents

Abstract

The filter is it has a regulated flow of water from the pond by means of the overhead spray into the main filter medium, with the input being less than the output back to the pond i.e., the drainage pipes are bigger than the input. No. 2 Fig. 1 and 6-7 Fig. 1. It has, by the vertical cylinder method of a secondary filter that is rot-proof, and effective for final clarification of water after the pond water has become acceptably clear, by means of the main filter medium. Nos. 13-14-15 Fig. 3, and No. 20 Fig. 1, respectively. Without having to empty the main filter medium for cleaning, it is possible to attach a hose to the tap outlet No. 10 Fig. 1 open, and hose through from the top of the tank, because both lid and the spray tube can be removed without disturbance to the remainder of the unit. No. 1-2a & 2. In the unlikely event of an overflow this will be through the top of the vertical cylinder No. 5 Fig. 1. <IMAGE>

Description

SPECIFICATION Biological pond filter This invention relates to a biological pond filter.

Biological filters rely on a container that is filled with a filtering agent such as shingle or sand, or any other medium, to hold mulm/waste, within its particles to allow biological action to take piace which helps clarify any water passing through.

Known existing filter boxes fed by pond pumps, do not appear to give satisfactory results.

The invention presented allows a tank of any size up to 60 gallons to be fitted out with cylindrical drainage on a single or multiple basis, according to the amount of water to be clarified. The cylinders are provided with a secondary/bi-filter for final clarification once an acceptable standard within the pond has been reached, via the main filtering agent.

Figure 1 shows a complete make-up of the lidded tank, with base flushing tap.

Figure 2a is of an overhead water feed tube to the tank with brass adapter feed and end sealing cap.

Figure 2 shows a cylinder with a holed drainage in its base, with a further holed horizontal drainage tube through it. The base of the cylinder is capped.

Figure 3 shows the outline of the secondary filter. A retaining wire which passes through the cylinder base holes to a fin on either side of the tank base which are drilled to accept these wire ends.

Shown also is a three part breakdown of the secondary/bi-filter.

Figure 4 shows the method of fixing of the above wire.

Figure 5 shows the outlet pipe back to the pond.

Referring to the drawing, the lid of the tank holds the overhead spray tube which is drilled for this purpose, accepting water from the pond pump direct into the end of the tube, the opposite end being capped off.

The water then passes through the filter medium within the tank finally entering both the cylinder holes, and tube holes rising through the cylinder towards the top outlet pipe-end if the cylinder filter has been inserted, through it also. The latter being made up of porous fibre on a plastic mesh cylinder with an outer covering of fine plastic mesh.

*The foregoing essentials can be used in multi ples these increasing with the various tank sizes.

NUMBER INDEX TO DRA WING No. 1 of 2 1. Tank Lid. (Plastic) 2a. Drilled tube. Water intake (from pump) opposite end brassed capped.

2. Plastic-adapter with brass fittings for pump hose.

3. Tank (Plastic) 4. Tank adapters (Plastic) 5. Cylinder (Plastic) 6. Horizontal Pipe (Plastic) holed.

7. Cylinder. Holes.

8. Shaped. Plastic covered wire (retaining wire) 9. Tank strengthening fins -- holed.

10. Tap (Plastic) for flushing and drainage.

11. Pipe elbow (Plastic) pond return.

12. Internal secondary/bi-filter (Plastics) and fibre.

13. Mesh. Large mesh (Plastic) 14. Fibre mat.

15. Mesh. Fine mesh (Plastic) 16. Cylinder base cap or capping.

NUMBER INDEX TO DRA WING No. 2 of 2 17. Flattened topside - for adapter.

18. Pipe (Plastic) outlet.

19. Overflow -- returned to pond. (to avoid tank side flooding) 20. Main filter medium.

1. A Biological filter for ponds built completely of rot-proof materials.

2. The main filter medium is cheap and readily available.

3. All materials used are replaceable.

4. A proven method of pond filteration.

5. Overflow returned to pond, thus not flooding the immediate area of tank, and emptying the pond of water.

6. The drainage and flushing tap supplied avoids emptying the tank of filter material in order to cleanse the tank of unwanted dirt. The standard size enables a standard hose to be fitted to drain water well away from the immediate area of pond and tank.

7. The inner secondary filter is washable and replaceable -- standard materials used.

8. Costs are minimal to suit working class pock ets.

New claims or amendments to claims filed on 20 Jan 1984 Superseded claims 1 to 8 New or amended claims: CLAIMS (filed on 10th November, 1983) 1. An Ashford Bi-filter comprising a deep separate-lidded plastic tank, wherein complete plumbing and requirement is of durable composite, means for piped pond-water entry above a primary filter medium, tank adaption to accommodate such medium with addition of an open-topped basecapped vertical base-perforated cylinder outlet with lower horizontal perforated pipe outlet, means to extract treated water via a secondary filter, avoiding overflow, means by pipe to exit clarified water from cylinder top through tank wall to pond, means of flushing out unwanted waste to distant drainage.

2. An Ashford Bi-filter as claimed in Claim 1 wherein means are provided for alternate input position for a restricted environment.

3. An Ashford Bi-filter as claimed in Claim 1 or Claim 2 permits even distribution of water input

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Biological pond filter This invention relates to a biological pond filter. Biological filters rely on a container that is filled with a filtering agent such as shingle or sand, or any other medium, to hold mulm/waste, within its particles to allow biological action to take piace which helps clarify any water passing through. Known existing filter boxes fed by pond pumps, do not appear to give satisfactory results. The invention presented allows a tank of any size up to 60 gallons to be fitted out with cylindrical drainage on a single or multiple basis, according to the amount of water to be clarified. The cylinders are provided with a secondary/bi-filter for final clarification once an acceptable standard within the pond has been reached, via the main filtering agent. Figure 1 shows a complete make-up of the lidded tank, with base flushing tap. Figure 2a is of an overhead water feed tube to the tank with brass adapter feed and end sealing cap. Figure 2 shows a cylinder with a holed drainage in its base, with a further holed horizontal drainage tube through it. The base of the cylinder is capped. Figure 3 shows the outline of the secondary filter. A retaining wire which passes through the cylinder base holes to a fin on either side of the tank base which are drilled to accept these wire ends. Shown also is a three part breakdown of the secondary/bi-filter. Figure 4 shows the method of fixing of the above wire. Figure 5 shows the outlet pipe back to the pond. Referring to the drawing, the lid of the tank holds the overhead spray tube which is drilled for this purpose, accepting water from the pond pump direct into the end of the tube, the opposite end being capped off. The water then passes through the filter medium within the tank finally entering both the cylinder holes, and tube holes rising through the cylinder towards the top outlet pipe-end if the cylinder filter has been inserted, through it also. The latter being made up of porous fibre on a plastic mesh cylinder with an outer covering of fine plastic mesh. *The foregoing essentials can be used in multi ples these increasing with the various tank sizes. NUMBER INDEX TO DRA WING No. 1 of 2 1. Tank Lid. (Plastic) 2a. Drilled tube. Water intake (from pump) opposite end brassed capped. 2. Plastic-adapter with brass fittings for pump hose. 3. Tank (Plastic) 4. Tank adapters (Plastic) 5. Cylinder (Plastic) 6. Horizontal Pipe (Plastic) holed. 7. Cylinder. Holes. 8. Shaped. Plastic covered wire (retaining wire) 9. Tank strengthening fins -- holed. 10. Tap (Plastic) for flushing and drainage. 11. Pipe elbow (Plastic) pond return. 12. Internal secondary/bi-filter (Plastics) and fibre. 13. Mesh. Large mesh (Plastic) 14. Fibre mat. 15. Mesh. Fine mesh (Plastic) 16. Cylinder base cap or capping. NUMBER INDEX TO DRA WING No. 2 of 2 17. Flattened topside - for adapter. 18. Pipe (Plastic) outlet. 19. Overflow -- returned to pond. (to avoid tank side flooding) 20. Main filter medium. CLAIMS

1. A Biological filter for ponds built completely of rot-proof materials.

2. The main filter medium is cheap and readily available.

3. All materials used are replaceable.

4. A proven method of pond filteration.

5. Overflow returned to pond, thus not flooding the immediate area of tank, and emptying the pond of water.

6. The drainage and flushing tap supplied avoids emptying the tank of filter material in order to cleanse the tank of unwanted dirt. The standard size enables a standard hose to be fitted to drain water well away from the immediate area of pond and tank.

7. The inner secondary filter is washable and replaceable -- standard materials used.

8. An Ashford Bi-filter as substantially described herein with reference figures 1-5 of the accompanying drawing and associated index's 1-20.

8. Costs are minimal to suit working class pock ets.

New claims or amendments to claims filed on 20 Jan 1984 Superseded claims 1 to 8 New or amended claims: CLAIMS (filed on 10th November, 1983)

1. An Ashford Bi-filter comprising a deep separate-lidded plastic tank, wherein complete plumbing and requirement is of durable composite, means for piped pond-water entry above a primary filter medium, tank adaption to accommodate such medium with addition of an open-topped basecapped vertical base-perforated cylinder outlet with lower horizontal perforated pipe outlet, means to extract treated water via a secondary filter, avoiding overflow, means by pipe to exit clarified water from cylinder top through tank wall to pond, means of flushing out unwanted waste to distant drainage.

2. An Ashford Bi-filter as claimed in Claim 1 wherein means are provided for alternate input position for a restricted environment.

3. An Ashford Bi-filter as claimed in Claim 1 or Claim 2 permits even distribution of water input over primary filter medium.

4. An Ashford Bi-filter as claimed in Claim 1 or Claim 3 whereby even outflow is established.

5. An Ashford Bi-filter as claimed in Claim 1 or Claim 4 whereby an even flow of treated water only reaches the secondary filter before exit.

6. An Ashford Bi-filter as claimed in Claim 1 or Claim 5 wherein an even flow of water is returned thus avoiding overflow.

7. An Ashford Bi-filter as claimed in Claim 1 wherein an adjustable waste outlet is provided.