Device for bag filling with powder products

IPC classes for russian patent Device for bag filling with powder products (RU 2284285):

B65B1 - MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING (bundling and pressing devices for cigars A24C0001440000; paper-bag holders as shop or office accessories A47F0013080000; apparatus for coating, e.g. by dipping, B05C; devices for tensioning and securing binders adapted to be supported by the article or articles to be bound B25B; nailing or stapling devices B25C, B27F; inserting documents in envelopes and closing the latter B43M0003000000, B43M0005000000; labelling B65C; wrappers, containers or other packaging elements, e.g. binders, closures, protective caps, B65D; transport or storage devices B65G; devices for handling sheets or webs of interest apart from their application in packaging machines B65H; applying closure members to bottles, jars or similar containers B67B; hand- or power-operated devices not attached to, or not incorporated in, containers or container closures for opening closed containers B67B0007000000; packaging of matches C06F; wrapping sugar during manufacture C13B0045020000; packaging of ammunition or explosive charges F42B0039000000; making containers or receptacles, see the appropriate subclasses);

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FIELD: packing equipment, particularly to fill paper or plastic bags with powder materials having low specific weight, for instance with flour, potato chips and so on.

SUBSTANCE: device comprises load-bearing frame in which loading funnel is arranged. Inlet funnel orifice communicates with supply means. Outlet funnel pipe is provided with bag engagement and fixing mechanism and with orifice to supply air from compressed air pipeline. Device also has pressure-operated valve and ejector. Ejector diffuser is fastened to air supply orifice of the funnel. Inlet ejector chamber communicates with atmosphere. Ejector diffuser is opened into outlet pipe of loading funnel. Ejector nozzle is connected to compressed air pipeline through pressure-operated valve. Outlet diffuser opening throat is 0.03-0.07 of that of outlet funnel pipe. Ejector axis extends at 15° to funnel axis.

EFFECT: increased reliability and economy of bag filling operation.

2 cl, 2 dwg

The invention relates to the field of packaging and can be used for filling bags with bulk materials, in particular for filling in paper or plastic bags bulk materials with low specific weight, in particular flour, potato chips, etc.

The known device for filling bags with bulk products containing cargo frame with feeding hopper and the mechanism of capture and fixation of the bag at the neck hoppers (see, e.g., Auth. mon. The USSR №373216, M CL 65 In from 21.05.71 year).

When applying, for example, from the feeder or manually granular material through the hopper enters the bag, which under the action of the weight of the material extends, allowing you to fill the bag completely. When filling, for example, a bag made of burlap sugar no difficulty will arise.

If the device is used for packing lighter material, moreover, prone to caking or clumping, such as soybeans, soy flour, to ensure the bag has been filled use of various types of agitators such as truck frames with feeding hopper or placed under the bag pallet (see, e.g., Auth. mon. The USSR №154810, M CL 65 In 1/22, Appl. 25.09.61, No. 1640013, M CL 65 In 1/22, Appl. 11.04.91, and the magazine "the World of measurement", 2003, p.29, Fig.3).

The disadvantage of these technical is of such solutions is what is the shaking of the bag together with the packing material. For this reason, the shaking device should have considerable power and, more importantly, the bag is subjected to considerable effort and may rupture or break away from the locking mechanism on the neck hoppers, especially paper bag and the bag with polyethylene liner.

The aim of the invention is to improve the reliability and efficiency of the process of filling bags with bulk products.

To this end, in the device for filling bags with bulk products containing cargo frame which is placed in the hopper, the inlet of which communicates with the feeder, and at the outlet port hoppers installed the capture mechanism and the fixing of the bag and made a hole for air supply, a line of compressed air, the pneumatic valve and the ejector, a diffuser is fixed in the hole for air supply hoppers, receiving chamber of the ejector in communication with the atmosphere, the diffuser of the ejector is open into the cavity, the outlet of a feed hopper, the nozzle of the ejector is connected through a pneumatic valve to compressed air, the cross-sectional area of the outlet of the diffuser of the ejector is 0,03-0,07 from the sectional area of the holes of the outlet of a feed hopper, and the axis of the ejector is tilted ogamdo 15 degrees to the axis of the feed hopper. In addition, the axis of the ejector may intersect with the axis of the feed hopper.

The invention is illustrated by drawings. Figure 1 shows a General view of the device, figure 2 - installation of the ejector.

Device for filling bags with bulk products contains cargo frame 1 which is placed in the hopper 2, an inlet 3 which is in communication with the feeder 4, and the outlet port 5 a feed hopper 2 has a mechanism 6 capture and fixation of the bag 7 and the hole 8 for supply air pipe 9 is compressed air, pneumatic valve 10 and the ejector 11, the diffuser 12 which is fixed in the hole 8 for air supply hoppers 2, the receiving chamber 13 of the ejector 11 is communicated with the atmosphere, the diffuser 12 of the ejector 11 is open into the cavity 14 of the outlet pipe 5 hoppers 2, the nozzle 15 of the ejector 11 is connected through a pneumatic valve 10 to highway 9 compressed air, the area of the 16 cross-section of the outlet of the diffuser 12 of the ejector 11 is 0,03-0,07 from the sectional area of the openings of the outlet pipe 5 a feed hopper 2, and the axis 17 of the ejector 11 is tilted at an angle up to 15 degrees to the axis 18 a feed hopper 2. In addition, the axis 17 of the ejector 11 may intersect with the axis 18 of the feed hopper 2.

The device operates as follows.

In the initial state of the bulk material to be Packed, is Pete is barely 4, the output of which is closed by a flap (not shown), the bag 7 in flattened or folded is fixed to the output pipe 5 hoppers 2 mechanism 6 capture and fixation of the bag 7.

On command from a controller (not shown) opens the pneumatic valve 10 and the nozzle 15 of the ejector 11 receives a portion of the compressed air, the bag 7 is inflated (POPs) and drop the remains of the bulk material, if they remained on the walls of the hoppers 2 after the previous cycle of filling the bag 7. It should be noted that the use of ejector 11 enables "soft" reveal of the bag 7, as when the first ejector cycle coming through the nozzle 15 from line 9 compressed air entrains into the cavity of the bag 7 is a significant number of air through communicated with the atmosphere of the receiving chamber 13 of the ejector 11. By increasing the air pressure in the bag 7, the efficiency of the ejector 11 drops, and then excessive air begins to come out of the bag through the gap between the nozzle 15 of the ejector 11 and the receiving chamber 13 and the diffuser 12, which is best if the ratio between the cross-sectional area of the outlet of the diffuser 12 of the ejector 11 and the sectional area of the openings of the outlet pipe 5 within 0,03-0,07. If this ratio is less than the specified limit, then the output of the redundant air supplies the tsya insufficient and probably excessive shocks to inflate the bag 7, if the hole is too large, reducing the efficiency of the aperture of the bag 7. The inclination of the axis 17 of the ejector 11 to the axis 18 a feed hopper 2 at an angle of 15 degrees provides the removal of residues of Packed granular product on the walls of the feed hopper 2 through the turbulence of air flow and a small injection box air out of the outlet pipe 5 a feed hopper 2. If the axis 17 of the ejector 11 does not intersect with the axis 18 of the hoppers 2, there is also a funnel-shaped curl of the air flow that with appropriate choice of temporal modes of opening of the valve 10 and the filing of Packed granular product provides accelerated receipt in the bag 7, i.e. in this case, the system neck hoppers 2 - ejector 7 itself has the entraining properties and provides better cleaning hoppers 2 from the remnants of Packed material and accelerated filling of the bag 7 to be Packed bulk solids entering the bag 5 through the hopper 2.

1. Device for filling bags with bulk products containing cargo frame which is placed in the hopper, the inlet of which communicates with the feeder, and at the outlet port hoppers installed the capture mechanism and the fixing of the bag and made a hole for air supply, the magician is stral compressed air, characterized in that it introduced the pneumatic valve and the ejector, a diffuser is fixed in the hole for air supply hoppers, receiving chamber of the ejector in communication with the atmosphere, the diffuser of the ejector is open into the cavity, the outlet of a feed hopper, the nozzle of the ejector is connected through a pneumatic valve to compressed air, the cross-sectional area of the outlet of the diffuser of the ejector is 0,03-0,07 cross-sectional area of the holes of the outlet of a feed hopper, and the axis of the ejector is tilted at an angle up to 15° to the axis of the feed hopper.

2. The device according to claim 1, characterized in that the axis of the ejector intersects with the axis of the feed hopper.