JPS6249031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a twin-screw food extrusion manufacturing machine in which two shafts each having various shapes of screws attached thereto are disposed within a cylinder.

Traditionally, in order to manufacture foods such as sweets, 1
A structure is known in which screws of various shapes are attached to a book shaft and rotated to knead and pressurize food raw materials, which are then extruded through small holes to produce food. However, this type of extrusion manufacturing machine is limited in the number of food raw materials that can be used, and requires adjustment of the food raw materials before inputting.

Therefore, in recent years, twin-screw extrusion manufacturing machines using two shafts have been developed, but in these machines, the shape of the screw is changed from round to round, starting from the food material input part.
They were simply changed into trapezoids or squares, and depending on the type of food raw material, kneading and pressurization were sometimes insufficient.

This invention was made in order to solve the problems of the above-mentioned conventional example, and its purpose is to:
It is an object of the present invention to provide a twin-screw food extrusion manufacturing machine that can sufficiently knead and pressurize food materials regardless of the food materials.

In order to achieve the above object, the present invention has two shafts disposed in a cylinder, a screw with a large lead of screw blades that forwards the food raw material supplied from the raw material input port, and a screw with a large lead for forwarding the food raw material fed from the raw material input port. a screw having a smaller lead of screw blades than the screw that is transferred forward while kneading;
A trapezoidal screw whose screw blades are rotated in the opposite direction to the two screws for pressurizing and kneading the food raw material, and a kneading disk for kneading and pulverizing the food raw material are attached.

The screw with a large lead on the screw blade allows the food raw materials inputted from the raw material input port to be quickly sent forward, and the large lead allows the food raw materials to be prepared in advance into a powder or fluid state. Even if you don't have one, you can directly feed some large granular food ingredients.

In addition, the food raw material is sent to the screw with a small lead of the screw blade, but since the lead of the screw blade is smaller than the screw, the food raw material is transferred at this point suddenly at a small lead. Therefore, kneading is performed together with the transfer of food raw materials.

Subsequently, the food raw material is further sent to the trapezoidal screw, but since this trapezoidal screw is turned in the opposite direction to the two screws, the food raw material tends to move backward. In this way, the food raw materials are pressurized and kneaded by this trapezoidal screw. Since a small gap is provided between the tip of the screw blade of the trapezoidal screw and the inner surface of the cylinder, the food material can be sent forward through this gap.

A kneading disk is attached to the shaft next to the trapezoidal screw, so that the food material pressurized and kneaded by the trapezoidal screw is further crushed and kneaded at the same time. It is then extruded through a nozzle to produce food. Hereinafter, the present invention will be explained in detail with reference to the drawings. In FIG.
A hopper 3 and a water supply pipe 4 are provided at the upper part of the tank. Furthermore, a nozzle 6 having an orifice 5 with various cross-sectional shapes is attached to the tip of the cylinder 1.

The following various screws are fitted into the shafts 2, 2'. That is, first, in the supply zone A below the hopper 3, there is disposed a semicircular screw 7 with a large lead, that is, a screw whose shape from the top of the screw blade to the screw groove is approximately arcuate. By arranging such a semicircular screw 7, the food raw material supplied from the hopper 3 is quickly sent forward.

Next, in the kneading zone B below the water supply pipe 4, a semicircular screw 8 having a smaller lead than the semicircular screw 7 is arranged. This semicircular screw 8 pulverizes the food raw materials and mixes and kneads them with water supplied from the water supply pipe 4 . Since the semicircular screw 8 has a smaller lead than the semicircular screw 7, the conveyance speed of the food raw materials entering the kneading zone B is reduced, and the kneading is carried out sufficiently.

In the pressurizing zone C, a trapezoidal screw 9 rotated in the opposite direction to the semicircular screws 7 and 8 is arranged. The food raw material entering the pressurizing zone C tries to move by the trapezoidal screw 9 in the opposite direction to the previous conveyance direction, so it is pressurized in this zone C. Since the trapezoidal screw 9 is used, the pressurizing effect is very large.

In the kneading zone D, three fixed kneading disks 10 are arranged out of phase with each other. Each kneading disk 10 is approximately oval shaped, and as shown in FIG.
a pair of kneading disks 10 fixed to the
10' are rotated with a phase shift of 90 degrees and in constant contact with each other. These kneading discs 10 generate very high shear forces on the food raw materials, so that the raw materials are ground very finely and thoroughly kneaded.

In the kneading zone E, a semicircular screw 11 similar to that in the kneading zone B is disposed, and in the pressurizing zone F, a trapezoidal screw 12 similar to the pressurizing zone C is disposed. In the kneading zone G, two sets of kneading disks 13 similar to those in the kneading zone D are arranged.
In these zones E, F, and G, the food raw materials are kneaded and pressurized again, and then extruded from the orifice 5.

In this embodiment, both shafts 2, 2' rotate in the same direction, and each screw 7, 8, 9, 1
1 and 12, as shown in FIG. 3, screw blades and screw grooves are fitted. However, it is also possible to rotate the shafts 2, 2' in opposite directions, or to arrange the screw blades of each screw in contact with each other.

FIG. 4 shows another embodiment of the screw used in pressurizing zone C or F. This trapezoidal screw 14 has screw blades 15 similar to the trapezoidal screws 9 and 12, and further has a screw groove 16 turned in the opposite direction to the screw blade 15.
have. If you use this screw 14,
The food ingredients are pressurized by the screw blades 15 and are sent forward through the screw grooves 16 while being kneaded. Therefore, although the degree of pressurization and kneading is lower than that of the trapezoidal screw 9, the feeding speed is faster. Therefore, this screw 14 is suitable for food materials that require such processing conditions.

Further, in this embodiment, a semicircular screw 11, a trapezoid screw 12, and a kneading disk 13 are further provided following the kneading disk 10, so that the food raw materials are kneaded, pressurized, etc. again. Therefore, there is an advantage that the grinding, kneading, and high temperature and high pressure can be further progressed.

Furthermore, since the semicircular screws 7, 8, and 11 are used, there is also an effect that the food material is fed without remaining in the screw groove.

In addition, if a heating device (not shown) is provided in any part other than the supply zone A, the food raw material whose temperature has increased due to pressurization and kneading can be further heated and baked.

This invention has the above-mentioned configuration, and the food raw materials supplied by the screw 7 with a large reed of the screw blade are conveyed and sent to the screw 8 with a small reed. Even large granular food raw materials such as the above can be directly charged into the cylinder 1 without having to be prepared into powder or the like in advance. In addition, after the food raw materials are crushed and kneaded by the screw 8 with a small lead, the trapezoidal screw 9 rotating in the opposite direction further pressurizes and kneads, and then the kneading disk 10
Since food ingredients are finely pulverized and kneaded using shearing force, even if the food ingredients are in the granular form mentioned above, they are reliably pulverized finely and uniformly kneaded, and are also sufficiently pressurized. , which has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a twin-screw food extrusion manufacturing machine according to the present invention. Figure 2 is a sectional view taken along the same line. Figure 3 is a sectional view taken along the same line. FIG. 4 is a front view showing another embodiment of the trapezoidal screw. 1...Cylinder, 2...Shaft, 7, 8, 11...
Semicircular screw, 9, 12, 14... trapezoid screw, 10, 13... kneading disk.

Claims (1)

[Scope of Claims] 1. A twin-screw food extrusion manufacturing machine in which two shafts each having screws of various shapes installed in a cylinder are disposed, wherein the shaft forwards food raw materials supplied from a raw material input port. A screw with a large lead of the screw blade to be transferred, a screw with a lead of the screw blade with a smaller lead than the screw with which the food material is transferred forward while kneading it, and the screw blade is rotated in the opposite direction to the two screws. a trapezoidal screw that pressurizes and kneads the food raw materials;
A twin-screw food extrusion manufacturing machine characterized by being equipped with a kneading disk for kneading and pulverizing the food raw materials.