JP2764068B2 - Twin-screw extrusion and squeezing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil press or an animal machine using plant seeds such as sesame, rapeseed, and sunflower as raw materials, and a juice machine using plant as a raw material.

2. Description of the Related Art Conventionally known extruder and squeezer have a single-shaft type in which bars with horizontal slits are arranged around the inside of a barrel around a single screw, and are squeezed out from the inside to the outside.

Problems to be Solved by the Invention A single-shaft type oil mill heats a fat or oil raw material as a pretreatment to denature proteins and at the same time adjusts water content in order to increase the oil pressing efficiency. Further, depending on the raw material, a step such as pressing or pulverization was required. In addition, the raw material is conveyed while being prevented from rotating around the raw material due to frictional resistance between the raw material and the barrel, and is gradually compressed to the outlet portion without being kneaded substantially. The oil content of the raw material in the vicinity of the valley takes a long time to transfer to the outer peripheral portion. Therefore, as the operating conditions, low-speed rotation and high-pressure operation are required, and a high-output motor is required. In addition, a high pressure-resistant structure such as a barrel was required to squeeze oil while generating a pressure exceeding 200 kg / cm ² . An even more serious disadvantage is that oil quality deteriorates such as oil scorch due to heating during pretreatment of oil and fat raw materials and heat generated during oil pressing. In addition, phosphoric acid receives excessive mechanical energy due to frictional force and compressive force. There is a problem that impurity substances such as lipids are easily eluted. The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to reduce the oil quality and to omit the pre-treatment. The aim is to provide a non-extruding squeezing and squeezing machine.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a twin-screw extruder incorporating two screws, a bar with a horizontal slit formed along the inner surface of a barrel having a cocoon-shaped cross section and a cocoon-shaped mesh. Are arranged in parallel and densely, and the upper and lower two on a bisector between the two screws.
A top is formed as a chevron between the horizontal slit bars at the position, and both side surfaces are provided with a fixing bar having a crown-shaped cross section whose extension is tapered to substantially the center of each of the screws, and the both side surfaces of the fixing bar are formed. The bar having horizontal slits is brought into contact with one surface of the bar with horizontal slits and tightened outward from the barrel side with bolts, and the bars with horizontal slits are brought into close contact with each other by the wedge action of the taper of the fixed bar and pressed against the inner surface of the barrel. .

The oil and fat raw material put into the hopper is carried into the barrel by a feeder, crushed and constantly kneaded while being compressed by two screws, and is squeezed at a low pressure and low temperature from the compressed raw material and flows out from the slit of the barrel with a horizontal slit bar. Recover the oil.

Embodiment Hereinafter, the present invention will be described with reference to FIGS. 1 to 4. A known twin-screw extruder, for example, a machine base 1 manufactured by Suehiro Iron Works
Two parallel screws 3 rotatably connected in the same direction to the reduction drive provided above are rotatably mounted in a barrel 4 in which a plurality of screws 3 are arranged concentrically.

Screw 3 is a screw shaft 5 with a spline cut out
A reverse screw block 7 or a cutting disk block or the like is fitted in a part mainly with the screw block 6 segmented on the upper side and fixed by a tip nut 8. At the end of the barrel 4, a die 9 for a die plate extrusion port and a cutting device for forming pellets if necessary are provided.

A hopper 10 for feeding oil and fat raw material is provided on the reduction drive device 2.
Is provided, and the raw material is carried from the hopper 10 through the feed pipe 12 to the inlet of the barrel 4 on the feed side.

In the gap between the barrel 4 and the two screws 3, a number of bars 13 with horizontal slits are arranged along the circumference. The bar 13 has a mountain-shaped cross section with a flat top, and the inclination of the mountain differs depending on the number of arrangements, and is determined so as to face the center of the circle when stored. Then, several horizontal slits 13a are cut in the longitudinal direction, the depth of which varies depending on the position of the screw 3 in the longitudinal direction, and a thin liner 16 is inserted at the top as necessary to make it adjustable depending on the raw material. The upper and lower sides of the bisector between the two screws 3 have a crown-shaped cross section tapered so that the extension thereof is directed substantially to the center of each screw 3 and has a wedge action as shown in FIG. A fixed bar 14 is interposed between the bars 13 with horizontal slits and is tightened to the barrel 4 side by bolts. The bars 13 with horizontal slits are brought into close contact with each other by the lateral component of the tapered surface by the wedge action, and are pressed against the inner periphery of the barrel. Fixed.

The barrel 4 has a flange 4a on both sides and has a cage shape having a cage in which a support plate is arranged in the center with a plurality of reinforcing ribs 17 integrated therewith. It is pressed against the circumference. Accordingly, the squeezed oil flows down through the basket of the barrel 4 from between the horizontal slits. A plurality of barrels 4 are concentrically connected, and an oil receiving gutter 15 is provided below the barrel 4.

In such a configuration, the raw material may be pre-processed in some cases, but an oil or fat raw material that is not pre-processed is put into the hopper 10 in principle. The raw material is carried into the inlet of the barrel 4 through the feed tube 12 by the feed device 11.
The two screws 3 in the barrel 4 are rotated in the same direction by the deceleration drive device 2 and are forcibly moved forward by slippage by the meshed threads. The raw material pulverized and kneaded on the way is squeezed with a frictional and compressive force in a state where the towel is squeezed by the stopper action of the reverse screw block 7 and the oil is removed from the barrel 4 through the slit 13a of the bar 13 having a horizontal slit. It flows out through the basket and is collected in the gutter 15. The oil pressing is performed at a low pressure and a low temperature by the screw block 6 of the screw 3 and the reverse screw block 7, and the oil pressing tank is discharged from the die 9. Note that the same applies to the squeezed juice described in the embodiment.

Effects Since the present invention is configured as described above, the machine of the present invention has the following effects.

A crown-shaped fixing bar with tapered sides on both sides is provided between the bars with horizontal slits and tightened from the barrel side, so that the wedge action strengthens the closeness between the bars with horizontal slits and the inner surface of the barrel In addition, the mounting of the bar with the horizontal slit can be easily performed with two fixed bars.

Also, unlike the one-shaft type, the oil pressure can be reduced at a low pressure and the size of the motor can be reduced, and the pressure acting on the barrel is about one-tenth that of the single-shaft type.

[Brief description of the drawings]

FIG. 1 is a right-angle cross-sectional view of the barrel, FIG. 2 is an external view of an extruding oil and squeezing machine of the present invention, FIG.
FIG. 4 is a perspective view of a bar with a horizontal slit. 3 Screw 4 Barrel 5 Screw shaft 6 Screw block 7 Reverse screw block 10 Hopper 11, Feed device 13 Bar with horizontal slit, 14 Bar

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-17577 (JP, A) JP-A-6-1222795 (JP, U) JP-A-46-15425 (JP, Y2)

Claims (1)

(57) [Claims] 1. A biaxial extruder incorporating two screws, wherein an extruding oil / squeezing machine in which bars with horizontal slits are arranged in parallel and densely along the inner surface of a barrel having a cocoon-shaped cross-section and a scallop formed therein. A top portion is formed between the horizontal slit bars at two upper and lower positions on a bisector between the two screws, and the both sides are tapered such that the extension is directed substantially toward the center of each of the screws. A fixing bar having a crown shape in cross section is provided, and the both side surfaces of the fixing bar are brought into contact with one surface of the bar with a horizontal stud and tightened outward from a barrel side by bolts, and a wedge action by a taper of the fixing bar is provided. A twin-screw extruding and squeezing machine characterized in that bars with horizontal slits are brought into close contact with each other and pressed against the inner surface of the barrel.