US20030159412A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust/particle collecting arrangement for cyclone separators
Assignee: Individual
•
Filing: 2001-07-05
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Granted: —
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Expires: 2021-07-05
Abstract
Abstract Apparatus is described for separating particulate material from an airstream established by suction. The apparatus comprises a primary separation chamber ( 12 ) in which particles are separated from the airstream therein by centrifugal force, a main particle collecting region ( 14 ) into which the particles separated by the primary separation can fall under gravity, and a secondary separation chamber ( 90 ) downstream of the primary chamber ( 12 ), to which air and particles not separated in the first chamber, pass. An air outlet in the secondary chamber allows air substantially free of particles to exit. An intermediate particle collecting region ( 22 ) is associated with the secondary chamber, in which particles collect after separation by centrifugal force from the air flowing through the secondary chamber ( 90 ). A valve ( 41 ) is provided between the intermediate particle collecting ( 22 ) region and a second particle collecting region ( 14 ), which is closed while air flows through the apparatus but which is opened when airflow ceases, to allow particles in the intermediate region ( 22 ) to pass into the second region
Inventors
- 👤 John North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:41
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1616; A47L9/1625; A47L9/1608; A47L9/165; A47L9/1658; A47L9/19; B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; B01D45/16; B04; B04C; B04C11/00; B04C3/00; B04C3/04; B04C5/00; B04C5/08; B04C5/103; B04C5/12; B04C5/13; B04C5/14; B04C5/15; B04C5/185; B04C5/24; B04C5/26; B04C5/30; B04C7/00; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02A50/2351; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
200 words
1 . Apparatus for separating particulate material from an airstream established by suction, comprising: (1) a primary separation chamber in which particles are separated from the airstream therein by centrifugal force; (2) a main particle collecting region into which the particles separated by the primary separation can fall under gravity; (3) a secondary separation chamber downstream of the primary chamber, to which air and particles not separated in the first chamber, pass; (4) an air outlet in the secondary chamber through which air substantially free of particles can exit; (5) an intermediate particle collecting region associated with the secondary chamber, in which particles collect after separation by centrifugal force from the air flowing through the secondary chamber; (6) a valve between the intermediate particle collecting region and a second particle collecting region, having a valve closure member which closes the valve while air flows through the apparatus but which opens the valve when airflow ceases, to allow particles in the intermediate region to pass into the second region; characterised in that the valve closure member presents a conical or frusto-conical surface to an annular seating which includes an O-ring against which the said surface engages when the valve is closed.
Claim 2
Dependent Claim
200 words
1 . Apparatus for separating particulate material from an airstream established by suction, comprising: (1) a primary separation chamber in which particles are separated from the airstream therein by centrifugal force; (2) a main particle collecting region into which the particles separated by the primary separation can fall under gravity; (3) a secondary separation chamber downstream of the primary chamber, to which air and particles not separated in the first chamber, pass; (4) an air outlet in the secondary chamber through which air substantially free of particles can exit; (5) an intermediate particle collecting region associated with the secondary chamber, in which particles collect after separation by centrifugal force from the air flowing through the secondary chamber; (6) a valve between the intermediate particle collecting region and a second particle collecting region, having a valve closure member which closes the valve while air flows through the apparatus but which opens the valve when airflow ceases, to allow particles in the intermediate region to pass into the second region; characterised in that the valve closure member presents a conical or frusto-conical surface to an annular seating which includes an O-ring against which the said surface engages when the valve is closed.
Claim 3
Dependent Claim
22 words
2 . Apparatus as claimed in claim 1 , wherein the second collecting region is separate from the main particle collecting region.
Claim 4
Dependent Claim
21 words
3 . Apparatus as claimed in claim 1 wherein the main particle collecting region also comprises the second particle collecting region.
Claim 5
Dependent Claim
20 words
4 . Apparatus as claimed in any of claims 1 to 4 in which the valve means is operable manually.
Claim 6
Dependent Claim
20 words
5 . Apparatus as claimed in any of claims 1 to 3 in which the valve means is operable electrically.
Claim 7
Dependent Claim
57 words
6 . Apparatus as claimed in any of claims 1 to 3 in which the valve operates in response to the flow of air through the apparatus so as to become closed when the air flow reaches and exceeds a given rate of flow, and opens when air fluid flow falls below a given rate of flow.
Claim 8
Dependent Claim
31 words
7 . Apparatus as claimed in claim 1 or 2 in which a baffle is located between the intermediate and second regions to create a tortuous path for particulate material therethrough.
Claim 9
Dependent Claim
15 words
8 . Apparatus as claimed in claim 7 in which the baffle is a helix.
Claim 10
Dependent Claim
26 words
9 . Apparatus as claimed in claim 8 in which the entry point of the helix is spaced from the exit from the secondary separation chamber.
Claim 11
Dependent Claim
33 words
10 . Apparatus as claimed in claim 9 wherein the gap between the entrance to the helix and the exit from the secondary separation chamber is in the range 4 to 6.4 mm.
Claim 12
Dependent Claim
20 words
11 . Apparatus as claimed in claim 8 , 9 or 10 in which the helix has two complete turns.
Claim 13
Dependent Claim
32 words
12 . Apparatus as claimed in any of claims 7 to 11 in which a gap of the order of 4 mm exists between the ball and a valve seating, when open.
Claim 14
Dependent Claim
29 words
13 . Apparatus as claimed in any of claims 1 to 12 , wherein spring means acts on the closure member in a direction to maintain the valve open.
Claim 15
Dependent Claim
44 words
14 . Apparatus as claimed in any of claims 1 to 13 further comprising a level sensing device in the or each particle collecting region to indicate when the contents of the collecting region has reached a given level, requiring it to be emptied.
Claim 16
Dependent Claim
30 words
15 . Apparatus as claimed in claim 14 in which the sensing device includes a switch generating an alarm and/or for interrupting the power supply to the suction producing means.
Claim 17
Dependent Claim
37 words
16 . Apparatus as claimed in any of claims 1 to 15 characterised in that the air is replaced by a liquid and the material to be separated therefrom is particulate material or another more dense liquid.
Claim 18
Dependent Claim
22 words
17 . Apparatus constructed and adapted to operate substantially as herein described with reference to and as illustrated in the accompanying drawings.
Claim 19
Dependent Claim
22 words
17 . Apparatus constructed and adapted to operate substantially as herein described with reference to and as illustrated in the accompanying drawings.
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