Nottingham.
CONTENTS
| CHAP. | PAGE | |
| PREFACE | [vii] | |
| I. | SYSTEMS AND APPLICATIONS OF PNEUMATIC CONVEYING | [1] |
| II. | DETAILS OF PLANT—PUMPS, EXHAUSTERS AND AIR FILTERS | [10] |
| III. | DETAILS OF PLANT (CONTD.)—DISCHARGERS, PIPE LINES AND SUCTION NOZZLES | [28] |
| IV. | TYPICAL INSTALLATIONS FOR GRAIN | [45] |
| V. | PNEUMATIC COAL HANDLING PLANTS | [54] |
| VI. | THE INDUCTION CONVEYOR | [62] |
| VII. | STEAM JET CONVEYORS | [72] |
| VIII. | MISCELLANEOUS APPLICATIONS OF PNEUMATIC CONVEYING | [80] |
| BIBLIOGRAPHY | [105] | |
| INDEX | [107] |
ILLUSTRATIONS
| FIG. | PAGE | |
| Intake end of Pneumatic Conveyor, with rise and fall adjustment | [Frontispiece] | |
| 1. | King’s pneumatic system. Steam-driven air pump | [12] |
| 2. | Sturtevant rotary blower | [17] |
| 3. | Nash “Hydro-Turbo” exhauster | [19] |
| 4. | Sturtevant “Cyclone” dust separator | [21] |
| 5. | Automatic bag filter | [23] |
| 6. | Mollers’ air filter | [24] |
| 7. | Sturtevant wet filter | [26] |
| 8. | Fixed discharger with glass receiver | [30] |
| 9. | Sturtevant patent junction | [33] |
| 10. | Course taken by material round bend | [35] |
| 11. | Segment-back bend | [35] |
| 12. | Lobster bend | [35] |
| 13. | King full-way junction valve | [37] |
| 14. | Suction nozzles for high pressure systems | [40] |
| 15. | Sturtevant equipment removing wood refuse from double tenoning machine | [41] |
| 16. | Sturtevant equipment removing dust from sand papering machines | [42] |
| 17, 18. | Ancient and Modern | [46] |
| 19. | Typical grain-handling plant | [47] |
| 20. | Floating pneumatic transport plant | [49] |
| 21. | Portable pneumatic plant on railway truck | [50] |
| 22. | Portable railway plant in operation | [52] |
| 23. | Pneumatic unloading of coal | [55] |
| 24. | Discharger for coal conveying plant | [57] |
| 25. | Brady steam jet ash conveyor | [75] |
| 26. | Typical Lamson inter-communication carrier | [82] |
| 27. | Tube central in wholesale drug house | [87] |
| 28. | Lamson distributing station | [88] |
| 29. | Stationary turbo-exhauster with dust separator | [91] |
| 30. | Portable turbo-exhauster | [91] |
| 31. | Suction cleaning for railway carriage cushions | [93] |
| 32. | Sturtevant equipment for office cleaning | [93] |
| 33, 34. | Air-lift pumping | [98] |
PNEUMATIC
CONVEYING
CHAPTER I
SYSTEMS AND APPLICATIONS OF PNEUMATIC CONVEYING
Conveying by mechanical means has existed for many centuries, and is one of the earliest forms of man’s ingenuity towards labour saving as we know it to-day. The pneumatic conveyance of materials from one position to another, either horizontally or vertically, is the most recent form of automatic handling of solid substances.
Genesis and Applications of Pneumatic Conveying. The need of water for human consumption and for irrigation purposes caused the ancient inventor to carry out nearly all his experiments with that substance, and the first instance we have of anything approaching pneumatic conveying is the well known injector in which steam is passed through one pipe, placed at right angles to a second pipe, at such a velocity as to reduce the pressure in the second pipe to below the atmospheric pressure. The excess of atmospheric pressure over the reduced pressure in the second pipe then drives up the latter the material (in this case water) in which the end of the pipe is submerged. This invention is about a century old, if it emanated from the Marquis Mammonry d’Eclet, in 1818, as is usually believed.