MXPA98003158A - Drainage device for containers containing bulk material in the form of particles, and using that device - Google Patents

Abstract

The present invention relates to a method for unloading a cargo container using a discharge device, characterized in that it comprises the steps of: arranging a ventilation line that includes a filter hose so that it can extend from the discharge device to the loading container, connect a discharge chute of the discharge device with the cargo container, pump gas through the ventilation line with the filter hose inside the loading device, receive the supply in the discharge medium from the cargo container, and take the power from the decar out device

Description

DRAINAGE DEVICE FOR CONTAINERS CONTAINING BULK MATERIAL IN THE FORM OF PARTICLES. AND USE OF SAID DEVICE * Description The present invention relates to a device for emptying containers for bulk materials pourable in the form of particles, especially powders and granular materials, by using a cell wheel lock, of the type of through blowing, and also refers to the use * of said device, as well as to a procedure for emptying the containers for bulk materials. The pourable goods in the form of particles, such as powders and granular materials, are transported by the manufacturer in large volumes in containers for bulk materials, to the user's facilities, in which facilities are proceeded to empty those containers. In what follows, the expression "containers for bulk materials" (bul containers) is understood to mean both containers that are in the form of bags, also known as "bulk bags" with a full volume that can be from a few hundred liters to several cubic meters, as well as silos and other containers that have the shape of a container, provided or not with an entrance that has the shape of a bag with a volume of 5 to 50 cubic meters , in particular, from 10 to 30 cubic meters. C200.776 The large containers, in the shape of a container, are usually fixed on the surface or loading platform of a vehicle that circulates in the streets (truck) or on rails (car of FF.CC.), of such that it is possible to discharge the contents through the opening of an outlet opening located on one side of the container and inclination of the loading platform of the vehicle. According to a known embodiment for emptying containers of this type for bulk materials, in particular for emptying large containers having an inlet, an evacuation device connected to the container is coupled. container for bulk materials (in the simplest case it can be treated directly from the exit of the entrance of a container), to a cell wheel lock, of the type of through blowing (Durchblase-Zellenradschleuse). When the engine of the cell wheel is put into operation and the transport gas, which is usually compressed air, is conveyed to the part of the through blowing of the lock of the cell wheel, the bulk material that falls into the lock of the cell wheel, is pneumatically delivered by a transport conduit to the place of destination, specifically a silo or a container-reactor, fixed in situ. The main problem of a drainage device of this type, consists of the venting of air leaks caused by the over-pressure in the part of the Blow-through of the lock of the wheel of cells, and of the compressed air necessary to make it arrive the product to the cell wheels. An insufficient vent blocks, due to the air cushion originated, the circulation of the product and with it the emptying process. For the venting of the through-blow cell wheel lock, up to the present, a vent tube arranged in the lock of the cell wheel was connected or put in communication by means of a hose, with the interior space of the container for the bulk materials; Assuming there is an available entrance, the hose penetrates the entrance. However, and depending on the necessary pressure for transport and the granulometry of the pourable material, serious disturbances in the emptying can occur under service conditions; When the pressure increases, an overpressure is created in the container and / or the inlet, so that the transport air is expelled from the container and / or the inlet, which can also cause a lot of dust on the outside .

The object of the present invention is to provide an improved drainage device for containers of bulk materials, which no longer has the disadvantages indicated. A draining device has been discovered for containers of bulk materials pourable in the form of particles, comprising a cell wheel lock, through blown, (1), a coupling (10) for coupling the wheel lock of cells, of through blowing, with an evacuation device (5) linked or communicated with the container for bulk materials, a conduit (4) for the delivery of the transport gas into the interior of the cell wheel lock, through blown, and a conveying line, (6), for the pourable fluidized material out of the cell wheel lock, through blowing, this device being characterized because the cell wheel lock has, above the cell wheel, at least one vent tube, (3), which tube is in communication with the interior space of the container for bulk materials, by means of a flexible tubular filter, (2), open on both sides. According to the present invention, the problem of venting is solved by the fact that instead of the hoses or pipes, usual heretofore, between the vent tube (s) of the cell wheel lock and the container for bulk materials, or the entrance of the same, flexible tubular filters open up and down are applied. It is possible that a part of the communication between the cell wheel lock and the container for bulk materials is configured in the form of a conventional hose, as long as a sufficiently long portion of the communication is configured as a flexible tubular filter. Thanks to the use according to the invention, of a flexible tubular filter, it is achieved that a part of the transport gas, usually air, can oscillate in the container for bulk materials, or at the entrance of said container, and also that the excess transport gas can escape through the flexible tubular filter to the outside, free of dust. Both the development of dust due to overpressure in a container for bulk materials and the voiding disorders caused by the existence of gas mattresses are avoided, and the schematic representation of a draining device is shown in Figure 1. The cross-section of a preferred device for emptying is shown in Figure 2. The invention will now be explained in more detail, with reference to the Figures. through blown, (1), whose wheel of cells, ((13) in Figure 2) is driven by a motor (14), a pipe (4) for the delivery or arrival of transport gas to the part blown blown def (12) of the cell wheel lock, and a transport line, (6), for the material fluidized to be transported. The cell wheel lock has two vent pipes, (3), and also - represented very schematically in Figure 1, but clearly identifiable in Figure 2 - a drop tube (11) for the material to be transported and a pipeline (9); by means of the latter, the material to be transported is conducted immediately in the cells of the cell wheel. By separating the product connection and venting, disturbances within the lock of the cell wheel are avoided, namely an insufficient filling of the cells and an excessive delivery of the material transported through the vent pipes, and with it, possible blockages in the vent line (19, 2, 22). * It is convenient that one or more vent pipes (11) with a sufficient nominal diameter, preferably parallel to the vertically arranged supply pipes, be arranged in the area of the lock of the cell wheel. Figure 1 also shows a container for - bulk materials, (16), arranged in an inclined or overturning position, with an inlet (15) and the pourable material (17); the vehicle is not shown with its incunable loading platform on which the container for bulk materials is fixed. The evacuation opening of the inlet is communicated * with an evacuation device, (5) - configured as a tightening device in Figure 2 and the latter is in communication through a coupling (1), with the tube . connection, (11), of the cell wheel lock, through-blow, (1). In both vent pipes, (11), a lower section of hose is connected, (19), then through lft a coupling (21) for hoses to the tubular flexible tubular filter (2) open on both sides, at its upper end through another coupling (20) for hoses and an upper hose section (22) is in communication with the interior space of the container for bulk materials. As shown in Figure 2, the upper section of hose is fixed in an opening (18) located at the entrance. Figure 1 also shows a pipe (7) derived from the conveying gas transport, (4), which derivative conduction serves to support the pneumatic transport in the transport pipe (6), and a derivative pipe, ( 8), towards the joints of the lock of the cell wheel, of through blowing. On the other hand, Figure 1 shows closing and regulating valves, which are convenient, a PIS regulator (25), and regulating ducts (26) for an electrical connection of plugs, by means of which the wheel lock of the cells, automatically disconnects in case of a plugging; said electrical connection also leads to the disconnection of the secondary or complementary air through the line (7), when the motor 5 (14) stops. Figure 2 shows a draining device, comprising a cell wheel lock, through blown, (1), with its wheel of cells, (13), the part of blown through, (12), connection pipes, (11), and tubes of . vent, (3); and also shows a coupling, (10), an evacuation device (5) configured as a tightening device, hose sections, (19) and (22), together with the couplings (21) and (20) for hoses, as also the flexible tubular filter (2) which forms an essential part of the present invention. The inlet evacuation opening, (15) of the container for bulk materials (indicated by the reference number (16)), is tightened in the tightening device, (5) whereby the discharge of the bag is maintained free. The evacuation device, (5), configured as a tightening device, comprises a conically shaped discharge (23) and a cylindrical tube (24) for the coupling to the coupling (10). As a flexible tubular filter, the flexible tubular filters that are commercially available are used, the width of which pores is chosen in such a way that it can be trusted that the powder will be retained. For emptying the container for bulk materials, a device according to the invention is used: in this case, an evacuation device (5) is connected by means of a coupling (10), which is connected to the container for Bulk materials, to the lock of a cell wheel, through blown; the vent pipe is joined, (3), either directly by means of an intermediate connection, to a section of hose with a flexible tubular filter (2); the open end of the flexible tubular filter or a section of hose that is connected to it is brought back into the container for bulk materials; and, by putting into operation the cell wheel motor and the blowing through of the transport air through the lock of the cell wheel, the conveyed material is pneumatically released from the container. The emptying device is distinguished by a service free of problems and by an absence of dust when the container for bulk materials is emptied. The emptying device is transportable and can be mounted at ground level. The emptying can be carried out in the range of overpressures, which is usual in the case of the pneumatic transport of pourable materials of low density in bulk as well as pourable materials of high density in bulk, for example in the range of 0.2 to 3 bar of overpressure, On the other hand, the constructive height of the emptying device is usually so small that it is also possible to empty containers for bulk materials installed on vehicles whose loading platform is at a low height. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. The invention having been described above, property is claimed as contained in the following:

Claims (1)

1 - . 1 - Device for emptying containers of pourable bulk materials in the form of particles, comprising a cell wheel lock, through blown, a coupling for connecting the cell wheel lock, through blown, with a device evacuation communicated with the G container for bulk materials, a conduit for the delivery of the transport gas into the cell wheel lock, through-blow, and a transport line for the pourable fluidized material out of the lock of cell wheel, of blowing * through, characterized in that the cell wheel lock has at the top of the cell wheel at least one vent pipe, which tube is in communication with the interior space of the container of the material bulk, by means of a flexible tubular filter open on both sides. 2. Drainage device according to claim 1, characterized in that for the separation of the product intake and venting, the lock of the cell wheel, of through blowing, is provided with a connection tube for the pourable material. and with a duct disposed between said supply pipe and the cell wheel. 3. Drainage device according to claim 1 or 2, characterized in that the lock of the cell wheel, through blown, has two vent pipes, which are in communication with the interior of the container for bulk materials , by means of a flexible tubular filter in common or by means of two separate flexible tubular filters. 4.- Emptying device according to any of the. claims 1 to 3, characterized in that for the emptying of the containers for bulk materials provided with an inlet, it presents as an evacuation device, a tightening device for the evacuation by the inlet, equipped with an evacuation tube for the material in bulk. 5. Process for emptying containers for bulk materials of pourable type in the form of particles, used in conjunction with a cell wheel lock, through blown, characterized in that a device according to any one of claims 1 is used to 4, proceeding to splice an evacuation device in communication with the container for bulk materials, by means of a coupling, to a cell wheel lock, through blown, with one or more vents, after which they are spliced the vent pipe (s), directly or by means of a hose section, with a flexible tubular filter, the open end of the flexible tubular filter is returned directly, or by means of a hose section, to the container for bulk materials, and by putting into operation the cell wheel motor and blowing through the transport air through the lock of the cell wheel, extra and pneumatically the transported material, of the container.