FR2306910A1 - Screw conveyor for feeding powder under controlled atmosphere - employing screw with non-uniform pitch - Google Patents
Screw conveyor for feeding powder under controlled atmosphere - employing screw with non-uniform pitchInfo
- Publication number
- FR2306910A1 FR2306910A1 FR7511087A FR7511087A FR2306910A1 FR 2306910 A1 FR2306910 A1 FR 2306910A1 FR 7511087 A FR7511087 A FR 7511087A FR 7511087 A FR7511087 A FR 7511087A FR 2306910 A1 FR2306910 A1 FR 2306910A1
- Authority
- FR
- France
- Prior art keywords
- tube
- pitch
- shaft
- inlet
- powder
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
Abstract
A conveyor for feeding compactible powder into a controlled atmosphere system includes a tube within which rotates a shaft mounted in sealed bearing a tube having an inlet adjacent to one end and opening over the shaft, and an outlet adjacent to the other end and opening below the shaft. Carried on the shaft are two screw flights, the first having a certain pitch at the inlet end of the tube, reducing to a closer pitch in the region of the inlet opening and then reverting to the original pitch which extends to the discharge orifice; the second flight extends from the opposite end of the tube to the discharge and has a pitch reversed relative to that of the first flight. Preferably the pitch adjacent to the inlet is 1 inch and elsewhere is 2 inches; the flights and bore of the tube may be chromium plated. Feeding aluminium powder into a reactor in the production of alcohols. Packing of the powder, and penetration into bearings and seals, is prevented. The shaft (65) is supported in bearings (74) spaced from lip seals (44) and ring seals (45) by wide bore tubes (70) which retain any powder escaping through the seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7511087A FR2306910A1 (en) | 1975-04-09 | 1975-04-09 | Screw conveyor for feeding powder under controlled atmosphere - employing screw with non-uniform pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7511087A FR2306910A1 (en) | 1975-04-09 | 1975-04-09 | Screw conveyor for feeding powder under controlled atmosphere - employing screw with non-uniform pitch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2306910A1 true FR2306910A1 (en) | 1976-11-05 |
| FR2306910B1 FR2306910B1 (en) | 1980-12-26 |
Family
ID=9153696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7511087A Granted FR2306910A1 (en) | 1975-04-09 | 1975-04-09 | Screw conveyor for feeding powder under controlled atmosphere - employing screw with non-uniform pitch |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2306910A1 (en) |
-
1975
- 1975-04-09 FR FR7511087A patent/FR2306910A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2306910B1 (en) | 1980-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |