IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0252506
(2011-10-04)
|
등록번호 |
US-8256996
(2012-09-04)
|
우선권정보 |
DE-102 47 829 (2002-10-14); DE-102 61 053 (2002-12-24) |
발명자
/ 주소 |
- Kleineidam, Andreas
- Kleineidam, Wilhard
|
출원인 / 주소 |
|
대리인 / 주소 |
Calfee, Halter & Griswold LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
49 |
초록
▼
Process and a device (2) for the pneumatic conveyance of powdered material (4), in which a cylindrical chamber (10, 12), which can be connected with a reservoir (6) by a sealable inlet (14, 16) and with a delivery line (28) by a sealable outlet (18, 20), is alternately filled with material from the
Process and a device (2) for the pneumatic conveyance of powdered material (4), in which a cylindrical chamber (10, 12), which can be connected with a reservoir (6) by a sealable inlet (14, 16) and with a delivery line (28) by a sealable outlet (18, 20), is alternately filled with material from the reservoir (6) and emptied of this material by applying a negative pressure to the chamber with its outlet (18, 20) closed and its inlet (14, 16) open through a bordering wall formed by a gas-permeable filter element (50) to draw material into the chamber (10, 12) from the reservoir (6), and by then admitting a gas under pressure into the chamber (10, 12) with its inlet (14, 16) closed and its outlet (18, 20) open to force the material previously drawn into the chamber (10, 12) out of the chamber and into the delivery line (28).
대표청구항
▼
1. A conveyance device for the pneumatic conveyance of powdered material from a feed line connected to a powdered material reservoir to a delivery line, comprising: a first conveying chamber comprising a first rigid gas permeable filter element, a first annular housing, and first and second caps, sa
1. A conveyance device for the pneumatic conveyance of powdered material from a feed line connected to a powdered material reservoir to a delivery line, comprising: a first conveying chamber comprising a first rigid gas permeable filter element, a first annular housing, and first and second caps, said first annular housing having first and second ends, and said first and second caps being removably engaged with said first and second ends respectively of said first annular housing to secure said first rigid gas permeable filter element within said first annular housing to create a first annular space therebetween;and a second conveying chamber comprising a second rigid gas permeable filter element, a second annular housing, and third and fourth caps, said second annular housing having first and second ends, and said third and fourth caps being removably engaged with said first and second ends respectively of said second annular housing to secure said second rigid gas permeable filter element within said second annular housing to create a second annular space therebetween;a first inlet pinch valve at said inlet of said first conveying chamber;a first outlet pinch valve at said outlet of said first conveying chamber;a second inlet pinch valve at said inlet of said second conveying chamber;a second outlet pinch valve at said outlet of said second conveying chamber;a first Y-shaped line section having one inlet and two outlets, with said inlet connected to said reservoir through said feed line and said outlets connected to said first inlet pinch valve and said second inlet pinch valve respectively;a second Y-shaped line section having two inlets and one outlet, with said inlets being connected to said first outlet pinch valve and said second outlet pinch valve respectively, and said outlet connected to said delivery line;one or more control valves being operable to selectively open or close said first and second inlet pinch valves and said first and second outlet pinch valves, and to selectively apply negative pressure or admit compressed gas through said first and second rigid gas permeable filter elements to draw in powdered material from said reservoir through said feed line into said first conveying chamber while said powdered material, which had been previously drawn into said second conveying chamber, is forced out of said second conveying chamber through said delivery line; and to draw powdered material from said reservoir through said feed line into said second conveying chamber, while said powdered material, which had been previously drawn into said first conveying chamber, is forced out of said first conveying chamber through said delivery line. 2. The conveyance device of claim 1 wherein said first and second rigid gas permeable filter elements extend for more than one third of the length of the first and second conveying chambers, respectively. 3. The conveyance device of claim 1, wherein said first Y-shaped line section has a leg connected to said feed line and two arms connected to said first inlet pinch valve and said second inlet pinch valve, respectively, the angles between said leg and said arms being less than 30°, and wherein said second Y-shaped line section has a leg connected to said delivery line and two arms connected to said first outlet pinch valve and said second outlet pinch valve, respectively, the angles between said leg and said arms being less than 30°. 4. The conveyance device of claim 3, wherein the first conveying chamber and the second conveying chamber each have a longitudinal axis, and wherein the angle between each of said arms of said first and second Y-shaped line sections and the longitudinal axis of the chamber to which each of said arms is connected is less than 30°. 5. The conveyance device of claim 1 wherein the length to inside diameter ratio of the first and second rigid gas permeable filter elements is 10 to 30. 6. The conveyance device of claim 1 wherein a vacuum injector is used to apply negative pressure through said first and second rigid gas permeable filter elements. 7. The conveyance device of claim 1 further comprising first and second cleaning valves which can supply compressed gas to said first and second conveying chambers, respectively, without passing said compressed gas through said first and second rigid gas permeable filter elements. 8. The conveyance device of claim 1 further comprising first and second connectors and third and forth connectors, said first and second connectors being received within said first and second caps respectively, and said third and fourth connectors being received within said third and fourth caps respectively. 9. The conveyance device of claim 2 wherein said first rigid gas permeable filter element has first and second ends, and wherein said first and second ends of said first rigid gas permeable filter element are received within said first and second connectors respectively, and wherein said second rigid gas permeable filter element has first and second ends, and wherein said first and second ends of said second rigid gas permeable filter element are received within said third and fourth connectors respectively.
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