NL7701502A - Installation for cooling castings and sepg. them from form sand - has means of emptying the installation after each work period - Google Patents
Installation for cooling castings and sepg. them from form sand - has means of emptying the installation after each work periodInfo
- Publication number
- NL7701502A NL7701502A NL7701502A NL7701502A NL7701502A NL 7701502 A NL7701502 A NL 7701502A NL 7701502 A NL7701502 A NL 7701502A NL 7701502 A NL7701502 A NL 7701502A NL 7701502 A NL7701502 A NL 7701502A
- Authority
- NL
- Netherlands
- Prior art keywords
- drum
- sand
- castings
- fall
- installation
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
- B22D31/007—Tumbling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
- B22C5/085—Cooling or drying the sand together with the castings
Abstract
The installation consists of a drum supported on bearing rollers driven at one end by means of a motor and chain-wheel drive. The axis of the drum is inclined to the horizontal at a narrow angle. At the lower end of the drum is an inlet opening which allows the mould blocks to be fed into the drum. Because of the inclination of the drum, the mould blocks fall into a bed of sand and castings which prevent any impact damage occuring. There are longitudinal ribs mounted on the walls of the drum, whose function is to raise the material in the drum and then let it fall, the movement separating the sand from the casting and permitting the sand to dry out. At the lower end the ribs are larger than those at the higher end. At the latter end, it is primarily the castings which are raised and allowed to fall back into the bed of sand. An exhaust fan draws off the steam and vapours from the drum via a suction hood. Spiral ribs forming an angle with the circumference of the drum tends to move the sand and castings back to the lower end of the drum. The material moving toward the upper end of the drum under the influence of the incoming material passes through a zone which is perforated to allow the sand to fall onto a collecting belt and the castings fall through the open mouth of the drum onto a belt. At the end of a work period, the rotational direction is reversed so that the sprial rib causes the sand and castings to be moved towards the mouth of the drum for emptying.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7701502A NL7701502A (en) | 1977-02-11 | 1977-02-11 | Installation for cooling castings and sepg. them from form sand - has means of emptying the installation after each work period |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7701502A NL7701502A (en) | 1977-02-11 | 1977-02-11 | Installation for cooling castings and sepg. them from form sand - has means of emptying the installation after each work period |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7701502A true NL7701502A (en) | 1978-08-15 |
Family
ID=19827966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7701502A NL7701502A (en) | 1977-02-11 | 1977-02-11 | Installation for cooling castings and sepg. them from form sand - has means of emptying the installation after each work period |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL7701502A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4933073A (en) * | 1981-03-09 | 1990-06-12 | Jonkers Cornelis O | Drum for separating castings and molding sand or the like |
-
1977
- 1977-02-11 NL NL7701502A patent/NL7701502A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4933073A (en) * | 1981-03-09 | 1990-06-12 | Jonkers Cornelis O | Drum for separating castings and molding sand or the like |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |