DE1970934U - VALVE BAG FILLING MACHINE WITH COMBINED MECHANICAL PNEUMATIC FILLING SYSTEM AND QUICK REMOVAL EMPTY. - Google Patents

Description

RA.348 428 * 6/22/67

NATRON CELL MATERIAL ¹ - AND Mannheim, June 21, 196?

PAPIERFABRIKEN A.G. Dr.vdB./Κ,- (O.N.607)

Valve bag filling machine with a combined mechanical-pneumatic filling system and rapid residue emptying _e

A valve bag filling machine, primarily with built-in gross bagging scales for powdery or granular material, with a screw as a feed device and feed for the filling material to the filling spout, has been proposed, in front of which a shut-off element is connected upstream and at the height of which feeds for finely divided compressed air are provided to make the filling material flowable »Here the feed device is designed as a pressure screw and between this and the shut-off element of the filling nozzle in the area of the compressed air supply a pressure _or fluidization chamber is provided that the filling material can emulsify homogeneously with the compressed air and below that of the pressure or stuffing screw exerted pressure under constant pressure ratios and constant fluidity in the valve bag with simultaneous compression in the same.

Filling machines of this type allow very high bagging capacities, Tor all when they are combined into a common bagging station. They let themselves be can easily be used for direct loading, i.e. without intermediate storage of the filled bags.

For example, since in mill operations generally during the loading of transport, ζ.B ₀ of trucks, known in most cases, mixed lots are eligible, ie "Zob ₀ flour of various types must be filled in rapid succession on these Fülliuschinen in sacks, it is necessary to quickly discharge the remaining amounts of one type of flour in the filling machine in question, so that the next type of flour can be filled with the shortest possible interruption in the bagging operation. It must be possible to carry out such residual emptying as completely as possible in order to avoid possible mixing of different types of flour.

The invention aims to create such a residual emptying o

The invention consists in that for the rapid emptying of residues of the filling element, i.e. the pressure or fluidization chamber an outlet opening at the lowest point of the same is provided. In a preferred embodiment, the pressure or fluidization chamber has essentially one cylindrical design with a vertical axis, the lower ventilation plate being conical and a lockable outlet is connected at the lowest point. With the actuation of this closing organ the activation of the inlet pressure screw and the fan that supplies the fluidizing air can be coupled being.

-3-

This arrangement results in emptying of the residue which can be carried out extremely quickly without significant additional effort the pressure or fluidizing channel.

The drawing shows two exemplary embodiments of the subject matter of the invention each in a schematic longitudinal section "

With the snail 3? only the inner end of which is shown and which is enclosed in a housing, the filling material is in a compressed state in the pressure or fluidization chamber 8 introduced. This chamber 8 is designed essentially cylindrical, the axis of this cylinder runs vertically. At the lower right end, a filler neck is connected via a closure member 9.

At the lower end of the chamber 8 is an air distribution device, ZoB. in the form of a conically designed porous Plate 4-0, provided. Residual material can be discharged from the chamber 8 through the lower opening 41.

During normal operation, the discharge opening 41 is closed by a closure member 42. This closing organ stands in connection with a switch 44 via a lever 43, which can be actuated via a linkage 45 with a lever 46. This lever is rotatably mounted in a stationary manner at 47 and hinged to the linkage 45 at 48

The outlet 41 is connected to a conveying pipe 49, which can be bent on one side and via a Suction nozzle 50 can be connected to an inlet 51 for compressed air.

The compressed air for the pluidization of the product is fed through a line 30 which can be shut off at 31.

If the filling residue emptying from the pressure and fluidization chamber 8 is to be carried out, the closing element 42 is opened with the lever 46 via the linkage 45. The lever 43 located on the closing element 42 is pivoted via the linkage 45 and does not switch via the limit switch 44 shown drive motor of the pressure screw 3 and the fan, also not shown, for the introduction of γόη compressed air through the line 30, while at the same time the closing element 9 to the filler neck remains closed ο the residual product now emerges from the chamber through the lower opening 41 at high speed and can run through the suction nozzle 50 directly into the pneumatic suction conveyor line 49, which takes care of the removal. After the closing element 42 has been closed, which happens after the chamber 8 has been completely emptied ₉ , another filling material can be fed to the filling machine.

In a second embodiment, exactly the same Works like this, the lower outlet 41 of the pressure or fluidization chamber 8 is connected to a pipe socket 52, with a mechanical conveying element or with any intermediate container or the like. in connection can stand =

Instead of the flap valve shown in the drawing 42, which is mechanically operated, can also be any other type of closure device, such as, for example, pneumatically operated Pinch valves, electromagnetically operated valves or other locking devices are used.

-5- Protection claims s

Claims (3)

_ 5 - Claims for protection 1. Valve bag filling machine primarily with built-in gross bagging scales for powdery or granular goods with a screw as the feed device and feed for the filling material to the filling nozzle, in front of which a shut-off element is connected upstream, and at the level of feeds for finely divided compressed air to make the flowable Filling goods are provided, characterized in that for rapid residual emptying of the filling element, i.e. the Pressure or fluidization chamber (8), at the lowest Place of the same an outlet opening (41) is provided, 2. Valve bag filling machine according to claim 1, characterized in that in a substantially cylindrical configuration the pressure or fluidization chamber (8), the lower ventilation plate (40) is conical, and on the lowest point of which is connected to a lockable outlet (41, 42). 3. Valve bag filling machine according to claim 1 and 2, characterized in that the actuating member (43-48) for the conclusion the additional outlet (41, 42) at the lower end of the pressure or fluidization chamber (8) with the switching devices for the product inlet pressure screw (3) and the G-ebläses, which supplies the fluidizing air, is coupled.