RU2483992C1 - Dispenser for weighing and packing machine - Google Patents

Abstract

FIELD: packing industry.

SUBSTANCE: invention can be used for dispensing of grained cottage cheese. The dispenser comprises a loading hopper 1, connected with a horizontal auger chamber 2 with a non-axial helical conveyor 3, a vertically aligned accumulating hopper 4, equipped in the lower part with a product diverter 5 controlled by a signal of a strain gauge sensor of a control system. Inside the accumulating hopper 4 coaxially with it there is a ripper installed with a reduction gear 7. At the same time the dispenser is additionally equipped with a dispensing reservoir 10, arranged vertically under the accumulating hopper 4 and equipped with the second product diverter 11 controlled by a signal of the strain gauge sensor. The base of the dispensing reservoir 10 is installed on the cantilever of the strain gauge sensor, the ripper comprises an axial shaft with mixing elements, the upper end of which is connected with the reduction gear 7, and the lower one is free, and the mixing element are aligned along the walls of the accumulating hopper 4.

EFFECT: invention provides for higher accuracy of dispensing due to breaking of available lumps in process of packing.

4 cl, 2 dwg

Description

The invention relates to filling and packaging equipment and can be used at dairy enterprises for dispensing cottage cheese, as well as in other industries where dosing of plastic or viscous products, as well as bulk ones prone to clumping, is required.

A device is known for filling containers with a plastic product, mainly cottage cheese [see RF patent for the invention No. 2169683, 2001]. The device contains a feeder, a metering carousel with measuring sleeves, an ejecting piston and a device for supplying containers. A recess is made in the working part of the piston, the diameter of which at the end of the piston does not exceed the diameter of the piston, and channels are made in the piston body that communicate with the cavity of the recess with a source of compressed gaseous medium.

The output sections of the channels can be located at an angle to the axis of the piston so that their geometric axes pass through the zone of the edges of the working part of the piston.

The main problem that arises with automatic strictly dosed packaging of such a product as cottage cheese is its viscosity. In this case, the accuracy of dosing of grain curd is complicated by the coalescence of grains and clumping of the loaded product.

Due to the fact that in the described analogue the product is fed into cups located in the carousel with the help of a pushing piston, this device is not applicable for the packaging of cottage cheese, as squeezing by a piston leads to a violation of the granular structure of the product.

As a prototype, a dispenser for a filling and packaging machine of a rotary type model "PASTPAK-R" was selected [see RF patent for utility model No. 45981, 2005]. The dispenser incorporates a loading hopper, under the outlet part of which there is a screw chamber with a hollow spiral screw fixed therein (an axial spiral pusher). At the exit of the auger chamber, a curd baking powder is installed, which is a drum with radial teeth on the outer surface. The baking powder is equipped with a gear motor, and its axis is oriented horizontally. A vertically oriented storage hopper is located under the baking powder, equipped at the bottom with a product shut-off - a slide gate, controlled from the signal of the weight meter - strain gauge.

The disadvantage described in the prototype dispenser is the low efficiency of the baking powder, the radial teeth of which are clogged with cottage cheese grains during operation, and it ceases to fulfill its function. Lumps entering the collecting hopper reduce dosing accuracy.

The problem solved by the invention is the expansion of the arsenal of funds and the satisfaction of existing needs - the creation of a dispenser that carries out precisely dosed packaging of grained cottage cheese. Achievable technical result - improving the accuracy of dosing of granular products prone to clumping due to loosening of lumps and preventing secondary clumping of the product during packaging.

The problem is solved by changing the design of the dispenser and the introduction of new elements in its composition.

The dispenser incorporates a loading hopper, under the outlet part of which there is a screw chamber connected to it with a non-axial spiral conveyor fixed in it, which is designed to supply the product from the screw chamber to a vertically oriented storage hopper. The storage hopper is equipped in the lower part with a product cutter, controlled by the signal of the strain gauge, and is also equipped with a baking powder with a gear motor. The claimed dispenser differs from the prototype in that it additionally contains a vertically oriented dispensing tank located under the storage hopper and equipped with a second product cutter controlled from the strain gauge signal. The base of the dosing tank is mounted on the console of the strain gauge. The baking powder is installed coaxially inside the storage hopper and has an axial shaft, the upper end of which is connected to the gear motor, and the lower one is free. Mixing elements are fixed on the axial shaft, oriented along the walls of the storage hopper, spaced from the walls with a given clearance.

The mixing elements of the baking powder can be made of rods curved in the form of spiral fragments and mounted on the axial shaft with radial fingers, or in the form of plate scrapers curved in the form of spiral fragments and fixed on the axial shaft also with radial fingers.

The mixing elements can be fixed on the axial shaft of the baking powder tier.

In order to better demonstrate the distinctive features of the invention, as an example, not having any restrictive character, the preferred embodiment described below is embodied in the PITPAK model range machine designed for packing and packing grained cottage cheese in plastic film bags.

An example implementation is illustrated by the figures of the drawings, which show:

Figure 1 - dispenser,

Figure 2 - storage hopper dispenser.

The dispenser is mounted on the frame and has a loading hopper 1 connected to a horizontal screw chamber 2 with an axisless spiral conveyor 3. The output of the screw chamber 2 is flanged by a flange transition connected to a vertically oriented collecting hopper 4, equipped with a product cutter 5 (slide gate) in the lower part controlled from signal of the strain gauge sensor of the control system. Inside the storage hopper 4, a baking powder is installed coaxially with it, having an axial shaft 6, the upper end of which is connected to the gear motor 7, and the lower one is free. On the axial shaft 6 are fixed mixing elements oriented along the walls of the storage hopper. The mixing elements are mounted on the shaft 6 using radial fingers 8 and are installed at an angle to the axis.

The mixing elements of the baking powder can be made of rods curved in the form of spiral fragments or, as shown in the Figures, in the form of sickle-shaped scrapers 9, curved in the form of spiral fragments. Scrapers 9 are made of metal strips (plates). The mixing elements can be arranged in two tiers, several at the same level, for example, 4 pcs. at the upper level, equidistant from each other, and two at the lower level, diametrically opposite.

Under the storage hopper 4 a metering tank 10 is installed, made in the form of a cylinder (pipe section). The dosing tank is equipped with a second product cutoff 11 (second slide gate) controlled from the signal of the strain gauge sensor. The base of the dosing tank is installed on the console of the strain gauge sensor of the control system.

The device operates as follows.

Grain cottage cheese is fed into the loading hopper 1, from which it enters the auger chamber 2, where, using an axisless spiral conveyor 3, it is additionally gently mixed and moves to the input of the storage hopper 4. In the storage hopper 4, the curd is directed downward, while it is affected by the mixing elements of the baking powder, which rotate from the gear motor 11. When mixing in the storage hopper 4 loose lumps of grained cottage cheese due to the action of the mixing elements break up into smaller fractions. Due to the fact that the rods or scrapers are bent in the form of spiral fragments, mixing occurs in the entire volume of the storage hopper. Larger adhering lumps, or lumps with greater grain adhesion to each other, during the mixing process are pushed to the periphery of the hopper and fall into the zone of intensive mixing and direct exposure to mixing elements. The tiered arrangement of the mixing elements contributes to a more efficient grinding of lumps. It is established that the described construction does not lead to a violation of the structure of individual grains and a change in the fractional composition.

During the supply of the product, the first slide gate is open and the product, passing the opening of the lower base of the storage hopper, enters the dosing tank 10. When the set portion weight of the product is set, the strain gauge is triggered and the first slide gate closes at its signal. The product that remains in the working area of the baking powder remains in the storage hopper, thereby achieving the exact dosage of the product. After the strain gauge is triggered, the second slide gate opens (second cutter), and the product enters the bag formed in the packaging machine. The package is brewed and trimmed.

Thus, during the packaging process, the grained cottage cheese fed into the machine not only does not worsen its granular structure, but improves it, acquiring the original friable consistency. Breaking up existing lumps during dosing and packaging increases dosing accuracy.

The invention can find application for any other bulk products prone to clumping, the packaging of which requires an exact dosage

Claims (4)

1. A dispenser comprising a loading hopper, under the outlet part of which there is a screw chamber connected to it with a non-axial spiral conveyor fixed in it, designed to supply the product from the screw chamber to a vertically oriented storage hopper, equipped with a product cutter in the lower part controlled by from the signal of the strain gauge sensor, and also equipped with a baking powder with a gear motor, characterized in that a vertically oriented metering is additionally introduced into the metering unit full-time container located under the storage hopper and equipped with a second product cut-off controlled by the strain gauge signal, the base of the dosage tank is installed on the console of the strain gauge, the baking powder is installed coaxially with it and has an axial shaft, the upper end of which is connected to the gear motor, and the lower one is free, mixing elements fixed along the walls of the storage hopper are fixed on the axial shaft. 2. The dispenser according to claim 1, characterized in that the mixing elements of the baking powder are made of rods curved in the form of spiral fragments and mounted on an axial shaft with radial fingers. 3. The dispenser according to claim 1, characterized in that the mixing elements of the baking powder are made in the form of scrapers, curved in the form of spiral fragments and mounted on the axial shaft with radial fingers. 4. The dispenser according to any one of claims 1 to 3, characterized in that the mixing elements are fixed on the axial shaft of the baking powder in tiers.

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