JPH1099609A - Solid-liquid separation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid-liquid separation apparatus having not only squeezing action but also sucking action. SOLUTION: A solid-liquid separation apparatus is equipped with the screw blade 12 rotated along the peripheral surface of a cylindrical or conical tubular filter element 1 and, in a process transferring a liquid to be treated in one direction by the rotary action of the screw blade 12, the liquid component in the liquid to be treated is filtered by the filter element 1 and the solid therein is taken out in front of the filter element 1. Further, not only a suction means 13 but also a filtrate discharge means 16 are connected to the outer cylinder 6 arranged around the filter element 1 through an interval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to soymilk and okara,
The present invention relates to a novel solid-liquid separation device for various liquids containing solids, such as water-containing mashed tofu stock solution.

[0002]

2. Description of the Related Art A solid-liquid separation apparatus of this kind is disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 08-108, JP-A-8-10323, etc., a filter tube (filament) is provided in an outer tube provided in a horizontal or vertical direction, and a screw blade is provided in the filter tube. A structure that allows the liquid component to be filtered from the filter tube and the solid component to be supplied from the end of the filter tube during the process of transferring the liquid to be treated, such as a soymilk stock solution or a broken tofu stock solution, from one side to the other so as to be rotatable. Prepare.

[0003]

However, in the above-mentioned conventional example, there is a problem that efficient and efficient filtration cannot be performed because only the filtering operation is performed.

The present invention has been made by paying attention to the points described above, and provides a solid-liquid separation apparatus which performs a filtering operation more efficiently by applying a suction pressure reducing operation at the time of a filtering operation. The purpose is to:

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) A screw-shaped blade that rotates along the peripheral surface of a cylindrical or conical tubular filament is provided. In the process of transferring the liquid to be processed in one direction by the rotating action of the screw-shaped blade, A solid-liquid separation device in which a liquid component is filtered by the filament and a solid component can be taken out in front of the filament, wherein a suction means is provided on an outer cylinder disposed at intervals on the outer periphery of the filter element. A solid-liquid separation device, wherein the device is connected to a discharge means capable of discharging the filtrate.

(2) The solid-liquid separation apparatus according to the above (1), wherein the suction means is connected to an outer cylinder by a suction pipe interposed with a vacuum pump so that the pressure in the outer cylinder can be reduced.

(3) The discharge means connects a reservoir tank to a discharge pipe connected to a lower part of the outer cylinder via a valve, and the discharge tank has a valve for opening to the atmosphere and a valve for discharge to the reservoir tank. The solid-liquid separation device according to the above (1), wherein

(4) The solid-liquid separation apparatus according to the above item (1), wherein the liquid to be treated is an undiluted tofu liquid obtained by dispersing broken tofu in water.

[0010]

The liquid to be treated supplied to the filter element is transferred from one side to the other by the rotating action of the screw blades. Is extracted within
Since a suction means such as a vacuum pump is connected to the outer cylinder, the inside of the outer cylinder other than the filter element exhibits a reduced pressure state as compared with the inside of the filter element. Therefore, the liquid component in the filter element is subjected to the suction action toward the outer cylinder side, so that it acts synergistically with the throttle action of the screw blade, and the solid-liquid separation action can be achieved efficiently and in a short time. The solid content can be discharged and taken out from the other of the filter elements.

The separated liquid discharged into the outer cylinder is temporarily stored in a reservoir tank by an outlet pipe, and then a valve above the tank is closed, a valve connected to the tank for opening the atmosphere and a valve below the tank are opened. By opening the valve, the separated liquid in the tank can be easily discharged without being affected by the reduced pressure in the outer cylinder. After the separated liquid in the tank is drained, open the valve above the tank again, close the other two valves, and take out the separated liquid filtered out to the lower part of the outer cylinder again under the same action. Can be.

[0012] In particular, the amount of discharged water in the stock solution generated during the production of ground tofu can be freely adjusted to effectively remove waste water.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1 is a longitudinal sectional side view showing an embodiment of a solid-liquid separation device according to the present invention, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, and FIG. It is a perspective view of a part.

Referring to the drawings, reference numeral 1 denotes a cylindrical filter element, which is a porous filter having a sharp apex portion 2b on the outside while holding a flat bottom surface 2a of a wire 2 having an isosceles triangular cross section on the inside. A spiral groove 4 formed in the inner periphery of the frame cylinder 3 is engaged and wound to form a slit hole 5 of a desired size between adjacent wires 2 and wound by a flat bottom surface 2a. The inner peripheral surface of the wire 2 can be formed flat α.

Reference numeral 6 denotes an outer cylinder disposed at intervals on the outer periphery of a cylindrical filter element 1 having a slit hole 5 of a desired size.
On the other side, there is provided a solids removing mechanism 9 having a filter residue discharge port 8. A hopper 7a is connected to the inlet 7.

Reference numeral 10 denotes a screw-shaped blade 12
The screw is provided vertically, rotatably mounted inside the cylindrical filter element 1, and slides with the flat α of the filter element 1 directly or through a necessary scraper with the leading edge of the screw blade 12. You can get in touch. Note that a scraper is not always necessary.

Reference numeral 13 denotes a suction means connected to the upper part of the outer cylinder 6, which is connected to a suction pipe 14, and which is provided with a desired vacuum pump 15 to reduce the pressure in the outer cylinder 6 to reduce the pressure from the filter element 1. The filtering action is more effectively performed by synergizing the action with the suction action.

Reference numeral 16 denotes a discharge means connected to a lower portion of the outer cylinder 6, which connects an outlet pipe 17 to the outer cylinder 6, connects a reservoir tank 19 via a valve 18, and has a reservoir tank 19 for opening the atmosphere. And a valve 22 provided with a discharge pipe 21 is interposed. The valves 18, 20, and 23 can be automatically opened and closed in relation to each other in accordance with the amount of filtrate stored in the reservoir tank 19.

A driving mechanism 23 connects the electric motor 24 to the rotating shaft 11 of the screw 10 via speed reducing means such as a belt and gears. Reference numeral 25 denotes a known handle opening / closing mechanism.

It is to be noted that, with respect to the other reference numerals, 26 is the support 2
An underframe 7 standing up and a number of support rods 28 each having one end fixed to a column 27 are provided so that the filter element 1 and the outer cylinder 6 can be securely supported by a so-called cantilever structure.

The operation will be described based on the above configuration.

The raw material of the tofu tofu, for example, a solidified product by adding a coagulant such as bittern is broken up, and a liquid to be treated in a solid-liquid mixed state exposed to cold water is first introduced into the hopper 7a.

The liquid to be treated is transferred from one side to the other inside the cylindrical filter element 1 by the action of the screw 10 from the inlet 7. The liquid to be treated in the filter element 1 is synergistically depressurized by the action of the suction means 13 provided on the outer cylinder 6 while being squeezed by the screw blades 12 of the screw 10, so that the liquid component is more efficient than the filter element 1. Extracted outside.

The extracted liquid component flows down through the valve 18 and is stored in the reservoir tank 19, and when the storage amount in the reservoir tank 19 reaches a set value, the valve 18 is closed and the valves 20, 22 are closed. Since it is opened, the stored liquid is automatically discharged from the discharge pipe 21. Therefore, the liquid in the tank 19 is discharged without being subjected to the depressurizing action in the outer cylinder 6.

When the reservoir in the reservoir tank 19 is exhausted, the valves 20 and 22 are closed, the valve 18 is opened, and the liquid component filtered and extracted from the filter element 1 again passes through the outlet pipe 17 and is stored in the reservoir tank 19. Then, the same operation is repeated.

It should be noted that the tofu to be solidified can be taken out via the solids take-out mechanism 9 after the required amount of water is adjusted and discharged by the filtering action of the filter element 1.

The extracted solid content is widely used mainly as a raw material for mimicking cancer.

In the above description, the production of undoed tofu, which is to be used as a raw material for cancer, has been described as an example of operation. However, it is needless to say that solid-liquid separation from soymilk and soybean during production of tofu can be carried out.

Although the screw filtration mechanism including the outer tube 6 and the filter element 1 is shown in the horizontal direction in the figure, it can be carried out in the upright and vertical direction, and the filter element may of course have the cylindrical structure shown in the figure. thing,
The same can be applied to the conical shape, and a filter having a desired filtering structure such as a punching metal or a porous structure can be used.

Further, the pitch between the blades of the screw blade 12 is reduced from the inlet 7 to the outlet 8 to increase the throttle action force.
The pitch of the blades can be made the same, and the length of the diameter of the shaft 11 can be gradually increased to similarly increase the aperture effect.

When a scraper mechanism is provided, the scraper mechanism may be provided at an end of the screw blade 12 or may be horizontally mounted on an adjacent screw blade 12 in an oblique direction. It is needless to say that, similarly to the rotary shaft 11 whose rotation can be adjusted, the set pressure of the vacuum pump 15 can be freely changed and adjusted to obtain an optimum state for filtering the liquid to be treated.

[0033]

According to the present invention, since the filtering action is performed synergistically by the squeezing action and the vacuum suction action, the filtering action is extremely high and is used for general tofu production.
In particular, it is suitable for the production of reconstituted tofu, which should be used as a raw material for cancer, and has a high filtration efficiency, so that the screw blade can be processed at high efficiency in a short time even at a low rotation speed.

[Brief description of the drawings]

FIG. 1 is an overall longitudinal sectional side view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of a whole vertical cross-sectional side view showing an embodiment of the present invention.

FIG. 3 is a partially cutaway slope view of a filter element.

[Explanation of symbols]

 Reference Signs List 1 cylindrical filter element 6 outer cylinder 10 screw 12 screw blade 13 suction means 14 suction pipe 15 vacuum pump 16 discharge means 17 outlet pipe 18, 20, 22 valve 19 reservoir tank 21 discharge pipe

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[Procedure amendment]

[Submission date] October 1, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

Claims (4)

[Claims] 1. A method according to claim 1, further comprising a screw-shaped blade rotating along the peripheral surface of the cylindrical or conical tubular filament, wherein the liquid to be processed is transferred in one direction by the rotating action of the screw-shaped blade. A solid-liquid separation device in which a liquid component is filtered by the filament and a solid component can be taken out in front of the filament, wherein a suction means is connected to an outer cylinder disposed at intervals on the outer periphery of the filter element. And a discharge means capable of discharging the filtrate. 2. The solid-liquid separation device according to claim 1, wherein the suction means connects a suction pipe interposed with a vacuum pump to the outer cylinder so that the inside of the outer cylinder can be depressurized. 3. The discharge means connects a reservoir tank to a discharge pipe connected to a lower part of the outer cylinder via a valve, and connects the discharge pipe provided with a valve for opening to the atmosphere and a valve for discharge to the reservoir tank. The solid-liquid separation device according to claim 1, wherein the device is connected. 4. The solid-liquid separation apparatus according to claim 1, wherein the liquid to be treated is a ground tofu liquid obtained by dispersing broken tofu in water.