CN1417137A - Foaming aerating disc - Google Patents
Foaming aerating disc Download PDFInfo
- Publication number
- CN1417137A CN1417137A CN02149447A CN02149447A CN1417137A CN 1417137 A CN1417137 A CN 1417137A CN 02149447 A CN02149447 A CN 02149447A CN 02149447 A CN02149447 A CN 02149447A CN 1417137 A CN1417137 A CN 1417137A
- Authority
- CN
- China
- Prior art keywords
- disc
- aerating
- foaming
- polystyrene
- aerating disc
- 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.)
- Granted
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The foamed aerating disc for disc type surface aerating machine is made from polystyrene with proper amount of foaming agent and through molding. During molding, great amount of micro bubbles are formed so that the formed aerating disc has specific weight lowered to below 1. The foaming agent is compounded with polyolefine and polycarbonate and accounts 0.75-2.3 wt% of raw material. Reducing the specific weight to below 1 can prevent crushed disc from depositing to sludge of oxidizing groove and affecting normal biochemical reaction.
Description
Technical field
The present invention relates to a kind of disc type meter aerator aerating disc, particularly relate to a kind of proportion less than 1 foaming aerating disc.
Background technology
Press, oxidation ditch process is one of leading technology of municipal sewage treatment, has obtained increasingly extensive application in middle or small sewage treatment, and disc type meter aerator promptly is the key equipment of oxidation ditch process.Disc type meter aerator mainly is made of horizontal drive shaft and the one group of circular aerating disc that is fixed on the horizontal drive shaft, horizontal drive shaft is installed on the bearing support and can be driven by motor and speed reducer by the bearing level and drives aerating disc at the vertical plane internal rotation, the lower edge of aerating disc is soaked to be located in the oxidation ditch water body and to promote water body whereby and is circulated in oxidation ditch, makes the water surface aeration simultaneously and finishes the biochemical treatment process.
Aerating disc adopts the polystyrene injection moulding more, because the proportion of polystyrene is greater than 1, therefore, when in the disc type meter aerator operational process, causing aerating disc damaged because of accidental cause, damaged video disc fragment will sink at the bottom of the oxidation ditch and upset the bottom of trench sludge blanket, thereby influence normally carrying out of biochemical treatment process.For the proportion that makes aerating disc drops to below 1, to avoid damaged video disc fragment to sink to sludge blanket, prior art has adopted the nitrogen technology of filling when the video disc moulding, promptly in the video disc injection molding process, in polystyrene, be blown into nitrogen, in the polystyrene video disc, forming bubble, thereby the proportion of video disc is dropped to below 1.The defective of filling the nitrogen technology is all more complicated of technology and equipment, and the bubble in the video disc also is difficult to evenly and may therefore influence the physical strength of video disc.
Summary of the invention
Purpose of the present invention is promptly obtaining the foaming aerating disc of a kind of proportion less than 1.
To achieve these goals, the present invention adds an amount of whipping agent in the polystyrene raw material of moulding aerating disc.
The polystyrene that is added with whipping agent can form a large amount of small bubbles in injection molding process, thereby the proportion of aerating disc is dropped to below 1, and moulding process is simple.In addition, along with alleviating of aerating disc weight, the force-bearing situation of disc type meter aerator transverse axis and bearing is improved, and the amount of deflection of transverse axis can reduce, thereby prolongs the work-ing life of bearing.Below in conjunction with specific embodiment the foam technical characterictic of aerating disc of the present invention is described in further detail.
Embodiment
The present invention foams aerating disc still by the polystyrene injection moulding, be added with the whipping agent that is mixed and is formed by 50% polyolefine, 20% poly-carbonic acid and 30% inorganic carbon acid esters in the polystyrene raw material, the weight ratio of whipping agent and polystyrene is (0.75-2.3): 100.When above-mentioned weight ratio was 2.0: 100, the foaming aerating disc proportion of injection moulding can reduce to 0.9308.
In a word, the present invention's aerating disc moulding process that foams is simple, and video disc proportion can be reduced to below 1, can avoid damaged video disc fragment to sink to the bottom of trench sludge blanket and influence normally carrying out of biological process.
Claims (3)
1, a kind of foaming aerating disc is by the polystyrene injection moulding; The invention is characterized in and be added with an amount of whipping agent in the described polystyrene raw material.
2, foaming aerating disc according to claim 1 is characterized in that described whipping agent by 50% polyolefine, and 20% poly-carbonic acid and 30% inorganic carbon acid esters are mixed and form, and the weight ratio of whipping agent and polystyrene is (0.75-2.3): 100
3, foaming aerating disc according to claim 2, the weight ratio that it is characterized in that described whipping agent and polystyrene is 2.0: 100, the proportion of foaming aerating disc finished product is 0.9308.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021494479A CN1211297C (en) | 2002-11-21 | 2002-11-21 | Foaming aerating disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021494479A CN1211297C (en) | 2002-11-21 | 2002-11-21 | Foaming aerating disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417137A true CN1417137A (en) | 2003-05-14 |
| CN1211297C CN1211297C (en) | 2005-07-20 |
Family
ID=4751682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021494479A Expired - Lifetime CN1211297C (en) | 2002-11-21 | 2002-11-21 | Foaming aerating disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1211297C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790859A (en) * | 2021-12-15 | 2022-07-26 | 重庆工业职业技术学院 | Installation and use method of classroom double-opening door leaf limiter |
-
2002
- 2002-11-21 CN CNB021494479A patent/CN1211297C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790859A (en) * | 2021-12-15 | 2022-07-26 | 重庆工业职业技术学院 | Installation and use method of classroom double-opening door leaf limiter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1211297C (en) | 2005-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUOMEI (TIANJIN) WATER TECHNOLOGY ENGINEERING CO., Free format text: FORMER NAME: SIEMENS (TIANJIN) WATER TECHNOLOGY ENGINEERING CO., LTD. Owner name: SIEMENS (TIANJIN) WATER TECHNOLOGY ENGINEERING CO. Free format text: FORMER NAME: GUOMEI (TIANJIN) WATER BUSINESS EQUIPMENT ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300000 Tianjin economic and Technological Development Zone Xin Garden New Village No. 3 Patentee after: USFILTER (TIANJIN) WATER TECHNOLOGIES AND ENGINEERING Co.,Ltd. Address before: 300000 Tianjin economic and Technological Development Zone Xin Garden New Village No. 3 Patentee before: SIEMENS (Tianjin) water technology Engineering Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 300000 Tianjin economic and Technological Development Zone Xin Garden New Village No. 3 Patentee after: SIEMENS (Tianjin) water technology Engineering Co.,Ltd. Address before: 300074 Hexi District Meteorological Observatory Road, Tianjin, No. 99 Patentee before: Guomei (Tianjin) Water Business Equipment Engineering Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20050720 |
|
| CX01 | Expiry of patent term |