GB2041252A

GB2041252A - Cyclone combined with a receiver

Info

Publication number: GB2041252A
Application number: GB8004352A
Authority: GB
Original assignee: Linde Maskiner AB
Current assignee: Linde Maskiner AB
Priority date: 1979-02-14
Filing date: 1980-02-08
Publication date: 1980-09-10
Also published as: SE7901312L; FR2448940A1; NL8000864A; DK60780A; DE3003563A1

Abstract

A cyclone (2) is arranged in the receiver (1) in such a way that dust-laden air blown into the receiver (1) e.g. as shown, via an inlet (8), the cyclone apex (5) and an ejector (6), and/or the dust collected in the receiver, Fig. 6 (not shown) creates a pressure in the cyclone apex (5) which is lower than that in the receiver (1). <IMAGE>

Description

SPECIFICATION Cyclone combined with a receiver The present invention relates to a cyclone com- bined with a receiver in which the cyclone is incorpo rated. Characteristic of the invention is that the cyc lone is arranged in the receiver in such a way that the dust-laden air blown into the receiver andlor the material collected in the receiver creates a negative pressure in the cyclone apex as compared to the pressure in the receiver. The advantage gained by the invention is that the outfeed lock previously arranged in the cyclone can be dispensed with.

The invention will be described in more detail hereinbelow with reference to the accompanying drawings which schematically illustrate three embodiments, chosen by way of example, of the cyclone combined with a receiver and in which:~ Fig. 1 shows a longitudinal section of an embodiment of the combination according to the invention; Fig. 2 shows a cross-section of said embodiment on line ll-ll in Fig. 1; Fig. 3 shows a longitudinal section of a second embodiment of said combination; Fig. 4 shows a cross-section of said second embodiment on line IV-IV in Fig. 3; Fig. 5 is a view on line V-V in Fig. 3; Fig. 6 shows a longitudinal section of a third embodiment of the combination; Fig. 7 shows a cross-section of the third embodimenton lineVII-VII; and Fig. 8 shows a cross-section of said embodiment on line VIII-VIII.

Referring now to the drawings, 1 designates the receiver in which coarse particles, light-flying husks and the like are removed from the dust-laden air blown into the cyclone 2, in order to unload the cyclone 2. The receiver 1 is at its bottom provided with a worm conveyor 3 which through the air lock 4 feeds out the material collected in the receiver 1.

According to the embodiment illustrated in Figs. 1 and 2, two cyclones 2 are incorporated in the receiver 1. Each of the cyclones 2 has at its apex 5 an ejector 6 via which the dust-laden air is blown into the receiver 1. The ejector 6 will thus create an appropriate negative pressure in the apex of the cyclone 2. Due to this fact the way of the air through the ejector 6, the receiver 1, the cyclone2 and the chamber 7 will be that shown by the arrows. Thus, the cyclone outlet communicates with a chamber 7 from which the purified air is to leave through a pipe in a suitable direction.

If the air blown in through the two inlets 8 has different pressures, the ejector with the lower pressure will not be affected by the ejector with the higher pressure due to the pressure-equalizing effect of the receiver 1.

In the embodiment of Figs. 3-5 only one cyclone 2 is arranged in the receiver. This cyclone 2 is provided at its apex 5 with a double ejector 6 which is connected to two inlets 8. In this case the cyclone is provided with two inlets 9 while, in the embodiment previously described, it has only one inlet 9. The way of the air through the ejector 6, the receiver 1, the cyclone 2 and the chamber 7 will be that shown by the arrows.

The embodiment of Fig. 6-8 has no ejector. The worm conveyor 3 in the bottom of the receiver 1 acts here as an air lock in that a piston 10 formed of mat erial is always pressed forwards through the covered part of the worm conveyor 3, where there is no screw threads. The cyclone apex 5 is thus connected to the worm conveyor 3 in the bottom of the receiver 1. Further, the worm conveyor 3 is adapted, through its covered, threadless parts, to maintain the sealing pistons 10, formed of material, between the cyclone apex 5 and the receiver 1 so that the desired negative pressure in the cyclone apex 5 is maintained in relation to the receiver 1. Also in this case the way of the air is shown by arrows.

The apparatus of the present invention is particularly apt for application to cleaning machines for grain and the like from which the dust-laden cleaning air is blown directly into the reciever 1 where it creates a positive pressure. Of course it may be used also in other connections, where the air, if desired, is replaced by another gas.

The invention is not restricted to that described above and shown in the drawings but may be modified within the scope of the appendant claims.

Claims

1. Cyclone combined with a receiver in which the cyclone is incorporated, wherein the cyclone is arranged in the receiver in such a way that the dustladen air blown into the receiverand/orthe material collected in the receiver creates a negative pressure in the cyclone apex as compared to the pressure in the receiver.

2. Cyclone as claimed in claim 1, wherein the cyclone apex is provided with at least one ejector via which the dust-laden air is to be blown in.

3. Cyclone as claimed in claim 2, wherein the cyclone apex is provided with a double ejector via which the dust-laden air is to be blown in.

4. Cyclone as claimed in claim 1, wherein the cyclone apex is connected to a worm conveyor in the bottom of the receiver, said worm conveyor being adapted to maintain sealing pistons of material between the cyclone apex and the receiver.

5. Cyclone as claimed in any of claims 1-4, comprising one or more inlets.

6. Cyclone as claimed in any of claims 1-5, wherein the cyclone outlet is provided with a chamber from which the purified air is to leave in a suiatble direction through a pipe.

7. Cyclone combined with a receiver, substantially as herein described with reference to, and as illustrated by the accompanying drawings.