JPH0312323Y2 - - Google Patents
Info
- Publication number
- JPH0312323Y2 JPH0312323Y2 JP14532287U JP14532287U JPH0312323Y2 JP H0312323 Y2 JPH0312323 Y2 JP H0312323Y2 JP 14532287 U JP14532287 U JP 14532287U JP 14532287 U JP14532287 U JP 14532287U JP H0312323 Y2 JPH0312323 Y2 JP H0312323Y2
- Authority
- JP
- Japan
- Prior art keywords
- filter sand
- water
- pipe
- filter
- sand 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
Links
- 239000004576 sand Substances 0.000 claims description 118
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 102
- 238000004140 cleaning Methods 0.000 claims description 33
- 238000001914 filtration Methods 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000005587 bubbling Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14532287U JPH0312323Y2 (US06272168-20010807-M00014.png) | 1987-09-25 | 1987-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14532287U JPH0312323Y2 (US06272168-20010807-M00014.png) | 1987-09-25 | 1987-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6452516U JPS6452516U (US06272168-20010807-M00014.png) | 1989-03-31 |
| JPH0312323Y2 true JPH0312323Y2 (US06272168-20010807-M00014.png) | 1991-03-25 |
Family
ID=31413806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14532287U Expired JPH0312323Y2 (US06272168-20010807-M00014.png) | 1987-09-25 | 1987-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0312323Y2 (US06272168-20010807-M00014.png) |
-
1987
- 1987-09-25 JP JP14532287U patent/JPH0312323Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6452516U (US06272168-20010807-M00014.png) | 1989-03-31 |
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