GB1185555A - Improvements in or relating to the Entraining of a Powder in a Gas Stream - Google Patents
Improvements in or relating to the Entraining of a Powder in a Gas StreamInfo
- Publication number
- GB1185555A GB1185555A GB5246367A GB5246367A GB1185555A GB 1185555 A GB1185555 A GB 1185555A GB 5246367 A GB5246367 A GB 5246367A GB 5246367 A GB5246367 A GB 5246367A GB 1185555 A GB1185555 A GB 1185555A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hopper
- duct
- powder
- ducts
- gas
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
1,185,555. Blasting. STANDARD TELEPHONES & CABLES Ltd. 17 Nov., 1967, No. 52463/67. Heading B3D. [Also in Division B8] Powder is entrained in a stream of gas, e.g. for machining by abrasion, by passing gas into a closed powder hopper via an inlet duct or system of ducts communicating with the hopper beneath the surface of the powder contained in the hopper and causing the gas to leave the hopper via an outlet duct or system of ducts communicating with the hopper above that surface; the impedance to gas flow into the hopper prevented by the inlet duct or system of ducts is balanced by the impedance to gas flow out of the hopper presented by the outlet duct or system of ducts, whereby gas flow through the hopper is caused to create a suspension of powder particles above the surface of the powder some of which are entrained in the gas flow issuing from the hopper. A hopper 1 is filled, through a pipe normally closed by a cap 5, with powder, e.g. alumina having a particle size of 27 Á or less. At the lower and upper ends of the hopper are connected inlet and outlet ducts 2, 3. The outlet duct 3 ends in a cutting jet 6 whose bore is lined with one or more annular cylinders 7 of sintered alumina, the length of the bore of the cylinder(s) being greater than the diameter; the bore diameter of the duct is at least twice that of the cylinder(s) 7 to minimize abrasion of the duct. In the duct 3 is a solenoid operated pinch-off valve 8. In the inlet duct 2 are an air switch 9, coupled to the valve 8, and a control jet 10 having a bore diameter equal to that of the cylinders) 7, e.g. 1 mm. A non-return valve 11 prevents entry of powder into the duct 2, its resistance to forward flow being small compared with that of the jet 10. The duct 2 is connected to a H.P. air line through an air transformer adjusted to give a regulated output, e.g. 80 p.s.c., means for drying the air may be included. The hopper may contain a wire mesh 12, above the level of the filler, to prevent the entrainment of agglomerations of particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5246367A GB1185555A (en) | 1967-11-17 | 1967-11-17 | Improvements in or relating to the Entraining of a Powder in a Gas Stream |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5246367A GB1185555A (en) | 1967-11-17 | 1967-11-17 | Improvements in or relating to the Entraining of a Powder in a Gas Stream |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1185555A true GB1185555A (en) | 1970-03-25 |
Family
ID=10464005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5246367A Expired GB1185555A (en) | 1967-11-17 | 1967-11-17 | Improvements in or relating to the Entraining of a Powder in a Gas Stream |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1185555A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010694A (en) * | 1989-08-01 | 1991-04-30 | Advanced Technology Systems, Inc. | Fluid cutting machine |
| US5133160A (en) * | 1979-07-05 | 1992-07-28 | Wacker-Chemitronic Gesellschaft Fur Elektronik-Grundstoffe M.B.H. | Process for the removal of specific crystal structures defects from semiconductor discs |
| CN108938424A (en) * | 2018-09-13 | 2018-12-07 | 青岛益青生物科技股份有限公司 | Capsule production line adds slippery device online |
-
1967
- 1967-11-17 GB GB5246367A patent/GB1185555A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133160A (en) * | 1979-07-05 | 1992-07-28 | Wacker-Chemitronic Gesellschaft Fur Elektronik-Grundstoffe M.B.H. | Process for the removal of specific crystal structures defects from semiconductor discs |
| US5010694A (en) * | 1989-08-01 | 1991-04-30 | Advanced Technology Systems, Inc. | Fluid cutting machine |
| CN108938424A (en) * | 2018-09-13 | 2018-12-07 | 青岛益青生物科技股份有限公司 | Capsule production line adds slippery device online |
| CN108938424B (en) * | 2018-09-13 | 2024-01-30 | 青岛益青生物科技股份有限公司 | Online slip degree adding device for capsule production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |