JPH0240309B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a device for continuously measuring and extruding food material mixtures and plastic materials.
In particular, when a plastic material with low fluidity is fed into a hopper in the form of a lump with many voids, it is installed below the hopper to continuously measure and feed the material while eliminating the voids. It has great utility value in food factories and other processing industries that use similar materials.

(Prior art and problems) Conventional plastic material feeding devices include those that use a screw installed in a cylinder to transfer the material, and gear pumps that transfer the material by rotating a pair of gears. There are things to do.

When transferring plastic materials using these devices, the air present in the gaps is trapped in the material fed into the hopper, and the material is transferred as is, making it impossible to continuously feed a constant weight. I was getting used to it.

U.S. Patent No.
Devices such as the Circulating Pump No. 3526470, although this prior art can eliminate air, do not solve the metering function of delivery.

The present invention was made based on a completely different conceptual background from this prior art.

(Means for Solving the Problems) The present invention solves the above-mentioned drawbacks, and the present invention forcibly deaerates the air present with the material during extrusion, and continuously weighs the material to maintain a constant density. The purpose is to send out.

Its structure is such that a flat plate that can move in and out is inserted into a slit provided in the axial direction on the generatrix of a hollow cylindrical body, and a cam that circumscribes and a cam that inscribes the end of the flat plate is provided to rotate the hollow cylindrical body. When the flat plate,
The volume of the peripheral chamber of the chamber surrounded by the circumscribed cam, the outer surface of the hollow cylindrical body and the housing side wall is reduced;
A phenomenon in which the volume of the inner circumferential chamber of the room surrounded by the vane, the internal cam, the inner surface of the hollow cylindrical body, and the housing side wall increases is performed relatively, and the outer circumferential chamber and the inner circumferential chamber are This is done by communicating through a gap.

One of the important features of this invention is that when the air particles mixed in irregular positions between the materials in the hopper are pushed into the peripheral chamber by the flat plate and moved in the direction a', By utilizing the phenomenon of air gathering at the leading edge of movement, that is, behind the flat plate, grooves etc. are provided on the back of the flat plate to guide the air at the tip of the outer peripheral chamber to the inner peripheral chamber, and further discharge it to the outside. It serves a purpose.

This ejection force in the present invention appears extremely strong. In other words, as the inner circumferential chamber moves, its volume increases while remaining airtight, resulting in a decrease in air pressure, and the phenomenon in which the volume of the outer circumferential chamber decreases as its position moves, acts to push out air, etc. This has a strong deaeration effect on the material.

This reaction action first removes air and then removes some material while increasing the material density in the outer chamber so that the outer chamber is constantly filled with material to achieve the purpose of metered transfer.

(Embodiment) The present invention will be described below based on an embodiment. A hollow cylindrical body 2 is rotated by a drive shaft 3 at the bottom of a hopper 1 into which food material 17 (hereinafter referred to as "material") is introduced.

Slits 4 are provided on the generatrix of the hollow cylindrical body 2 at predetermined intervals in the axial direction, and a flat plate 5 is inserted into the slit 4 so as to be freely movable in and out of the slit 4 in the direction of its outer circumference.

The flat plate 5 has grooves 6 on its surface. Groove 6 is flat plate 5
When it rotates by the shaft 3, it is located on the back side in the direction of movement.

A circumscribed cam 8 is provided on the outside of the hollow cylindrical body 2, with which the outer end of the flat plate 5 that is inserted into the cylindrical body 2 comes into contact, and an internal cam 9 is provided on the inside of the cylindrical body 2, with which the inner end of the flat plate 5 comes into contact. It is set up.

The hollow cylindrical body 2 has an outer peripheral chamber 11 surrounded by the outer surface of the cylindrical body 2, the flat plate 5, the circumscribed cam 8, and the housing wall surface 10.

Further, the inside of the cylindrical body 2 has an inner circumferential chamber 12 surrounded by the inner surface of the cylindrical body 2, the flat plate 5, the internal cam 9, and the housing wall surface 10.

As shown in FIG. 1, when the hollow cylindrical body 2 rotates in the direction a, the flat plate 5 is pushed in by the outer circumferential cam 8, so that the volume of the outer circumferential chamber 11 gradually decreases.

Conversely, the flat plate 5 is pushed by the circumscribed cam 8 and enters the inner cylinder of the hollow cylindrical body 2, so that the volume of the inner circumferential chamber 12 increases together with the surface of the inner cam 9.

An air outlet 13 is provided at the end position of the internal cam 9, that is, at the position where the flat plate 5 is pushed out the most.

The air 14 that was taken in by the hopper 1 and pushed into the outer peripheral chamber 11 is transferred to the flat plate 5 as shown in FIG.
As the air moves forward, all of the air is sucked into the inner circumferential chamber 12 through the holes in the groove 6 and is discharged from the outlet 13 (in the direction of arrow b).

At this time, some material 17 may also be discharged at the same time, so it is convenient to make the discharge port 13 conductive to the inside of the hopper 1.

(Effect of the invention) As explained above, the air trapped in the material is forcibly degassed while being transferred by the rotation of the hollow cylinder, and the density of the material becomes constant and no random penetration occurs. The material that is not available is continuously supplied downstream.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front sectional view of the embodiment of the invention, and FIG. 3 is a perspective view of a hollow cylindrical body 2. As shown in FIG. 1...Hopper, 2...Hollow cylindrical body, 3...Drum drive shaft, 4...Slit, 5...Flat plate, 6...Groove, 8...External cam, 9...Internal cam, 10... Housing side wall, 11... outer peripheral chamber,
12... Inner peripheral chamber, 13... Air outlet, 14...
Air, 17...material.

Claims (1)

[Claims] 1. When a slidable flat plate is inserted into a slit provided in the axial direction on the generatrix of the hollow cylindrical body, and a cam circumscribed and a cam inscribed at the end of the flat plate is provided, and the hollow cylindrical body is rotated, The volume of the outer peripheral chamber surrounded by the flat plate, the circumscribed cam, the outer surface of the hollow cylindrical body, and the housing side wall decreases, and the volume of the inner peripheral chamber surrounded by the flat plate, the internal cam, the inner surface of the hollow cylindrical body, and the housing side wall increases. The outer circumferential chamber and the inner circumferential chamber communicate with each other on the back surface of the flat plate, and a communicating hole between the inner circumferential chamber and the outside is provided at the end of the internal cam. Measuring and feeding device for food materials.