IE45847B1

IE45847B1 - Vehicle for the bulk transport of material

Info

Publication number: IE45847B1
Application number: IE243677A
Authority: IE
Original assignee: Wellink Geb Nv
Priority date: 1976-12-03
Filing date: 1977-12-01
Publication date: 1982-12-15
Also published as: DE2753665A1; NL7613523A; IE45847L; GB1587207A; PT66082A; CH624348A5; IT1089589B; FR2372717A1; BE861382A; ATA863077A; AT358935B; PT66082B

Abstract

Each compartment of the bulk-material container (10) is provided with a conical discharge funnel (8) which is connected via a shut-off member (19) to a discharge pipe (1). On the one side, the discharge pipe is connected via a throttle member (41) to the mouthpiece (12) for the compressed air, and on the other side has an outlet for the bulk material with air. The upper end of the container is connected via an air-feed duct (14) to the mouthpiece (12), this duct (14) branching off between the mouthpiece and the throttle member. By introducing the throttle member and by the fact that the air-feed duct branches off from the throttle member it is achieved that there is constantly sufficient air at the top in the compartments. By this means, an easy and rapid discharge of the vehicle is achieved.

Description

The invention relates to a vehicle for conveying bulk material. There is known such a vehicle caiprising at least oie hopper for receiving the material, having at least one compartment provided with a discharge funnel, which ccranunicates through at least one adjustable closing mentoer with a discharge tube, which ccranunicates with a compressed air nozzle and which has an air and material delivery part, the top end of the hopper communicating through an air supply conduit with the compressed air nozzle.

When a ccnpartment is discharged, air is fed into the top part of said compartment beyond the discharge bottom of the compartment via the ID air supply conduit. Thus the compartment as a whole is subjected to pressure and only subsequently the closing member of the ocnpartnent to be discharged is opened so that approximately the sane pressure prevails above and below the material to be discharged. Although each ccnpartment of this known vehicle can be satisfactorily discharged under many operational conditions and certainly by operators familiar with ihe vehicle, the discharge may be slowed down under certain conditions, when unskilled people not/?am?liar with ihe vehicle have to operate it.

According to ihe present invention there is provided a vehicle for transporting bulk material comprising at least one hopper for receiving the material and having at least one coipartment provided with a discharge funnel, ihe or each discharge camnunicating through at least one adjustable closing menber with a discharge pipe, which discharge pipe communicates with a compressed air nozzle and has a delivery part for air and material, the upper end of the hopper communicating through an air supply conduit with the compressed air nozzle, ihe discharge pipe communicating with the nozzle through a throttle having a fixed passage for the flow of air through the throttle, ihe air supply conduit ccmminicating with ihe nozzle upstream of the throttle as seen in ihe direction of ihe air flow. - 2 4S847 According to the .invention it is ensured that during the discharge at any rate sufficient pressure will prevail in the upper part of the compartment as compared witn the air pressure in the discharge pipe.

The invention will be described more fully hereinafter with reference to the accompanying drawings.

In the drawing Fig. 1 is a longitudinal sectional view of a vehicle embodying the invention, Fig. 2. is a sectional view of a discharge funnel of the vehicle shown in Fig. 1 and F ig. 3 is a reduced plan view of the discharge funnel of Hg. 2.

The vehicle 9 shown in F ig. 1 is a trailer carrying a hopper 10. The vehicle according to the invention may alternatively be a self-propelled wagon or a railway truck.

The hopper 10 is divided into five compartments 11, each having on the bottom side a conical discharge funnel 8, the walls of which are at an angle d of 45° to the horizontal plane so that the material. 7 to be discharged automatically slides down along the wall of the discharge funnel 8. The filling openings 6 of the compartments il are closed in airtight manner by means of covers 21. The compartments 11 are separated from one another by partitions 5 and communicate with one another through air passages 4 in the top ends of the partitions 5. The spaces 3 of the hopper 10 beneath the discharge funnels 8 communicate with one another and through vertical air pipes 2 4584*7 and the air passages 4 with the top portions of the compartments 11. The air pipes 2 are formed by angle-section irons welded to the partitions 5 and have a large passage, for example, of 50 square cms.

Beneath the discharge funnels 8 is arranged a common discharge pipe 1, whose front end -40 is ecmnacted through a throttle 41 having a fixed air passage with a compressed air nozzle 12 and whose rear end forms an outlet 13 for air and material. The discharge pipe 1 has, for exanple, a passage qf 80 square ens·, whereas the throttle 41 may· have a passage with a cross-sectional area of 12 to 16 square cms. Mie nozzle communicates with the spaces 3 through an air supply conduit 14 having a passage of, for example, 20 to 30 square cms,in cross-section, at least a larger passage than the choke 41. The delivery port 13 is connected through a closing member 15 with a lb coupling 16 for a hose 17.

Each funnel 8 communicates through a discharge funnel port 18 with the discharge pipe 1. This discharge funnel port 18 can be closed by means of a circular closing member 19, which is in sealing relationship with the conical inner wall of the discharge funnel 8 via a toroidal rubber ring 20. The ring 20 is glued in an uninterrupted corner formed by the outer edge 22 of a circular plate 24 and a circular ring 23 welded thereto.

The outer edge 22 is welded to the lower end of a vertical sliding tube 25, which telescopically co-operates with a circular screening hood 26 having a conical top 27. The screening hood 26 is secured by two vertical strips 28 to the discharge funnel 8. To the top end of the sliding tube 25 is glued an elastic -445847 sealing ring 29 in sealing relationship with the inner side of the screening hood 26. The screening hood 26 accommodates the control-means for the closing member 19. These means are formed by an eccentric member 31 fastened to a shaft 30 and engaging a bracket 32 of the closing member 19. Outside the discharge funnel 8 the shaft 30 is provided with a handle 33. The nozzle 12 communicates with a blower (not shown) mounted, for example, on a tractor. The closing member 19 ot the compartment 11 to be discharged is lifted to a height depending upon the length of the hose 17 after actuation of the blower and the spaces 3 of the compartments 11 at the ends and in the top portions of the compartments 11 still filled with the material 7, when the closing member 15 is closed, are filled with compressed air, said height depending furthermore upon the magnitude of elevation, the specific weight and the nature of the material to be discharged, the elevation being preferably such that the hose 17 is not in danger of being clogged.

In this way it is always possible to discharge at maximum capacity.

The discharge capacity of this vehicle is very large, for example, half a ton a minute with an air supply rate through the nozzle 12 of 12 to 14 cubic ms/minute, when the diameter of the discharge pipe 1 and of the hose 17 amounts to 10 cms.

With the vehicle embodying the invention a large quantity of air is supplied at a comparatively low pressure, that is to say, about 0.9 ato., which pressure prevails during the discharge also -545847 in the top portions of the compartments 11, whereas the air pressure in tne discharge pipe 1 is, for example, only 0.8 ato.

It is also possible to discharge simultaneously two 5 or three compartments 11. Moreover three different kinds of fodder may be simultaneously transported in the three compartments The vehicle according to the invention is not only suitable for transporting powdery material but also transporting fodder in lumps, without the use of a sluice crumbling up the lumps between the hopper and the delivery part for the material.

During the discharge of a compartment 11 the satisfactorily sealing closing member 19 of an empty compartment 11 prevents leakage of air.

Consequently, the whole quantity of the air supply remains available for the collection of the material 7 beneath > the opened discharge funnel port 18 so that the constant, maximum discharge capacity is ensured. The design is such that a discharge funnel port 18 can again be Closed, even if the compartment 11 concerned is only partly discharged.

Claims

CLAIMS:

1. A vehicle for transporting bulk material comprising at least one hopper for receiving the material and having at least one compartment provided with a discharge funnel, the

2. 5 or each discharge funnel communicating through at least one adjustable closing member with a discharge pipe, which discharge pipe communicates with a compressed air nozzle and has a delivery part for air and material, the upper end of the hopper communicating through an air supply conduit with

3. 10 the compressed air nozzle, the discharge pipe communicating with the nozzle through a throttle having a fixed passage for the flow of air through the throttle, the air supply conduit communicating with the nozzle upstream of the throttle as seen in the direction of the air flow.

4. 15 2. A vehicle for transporting bulk material substantially as herein described.