JPH0236294B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an apparatus for mixing soybean flour and the like for tofu production with a liquid such as water in a water tank.

"Prior Art" Conventionally, an apparatus in which an axial flow stirrer is supported in a water tank, water and soybean flour are introduced into the water tank, and the two are mixed has been generally used in tofu production. The above-mentioned powder is not only soybean flour but also wheat flour, skim milk powder, etc., and can be used in food manufacturing industries other than tofu manufacturing. However, the above-mentioned powder forms foam-like particles as shown in Figure 6, and the powder inside the foam-like particles is difficult to dissolve in water, so it is necessary to scoop out the foam-like particles, collect them, and manually break them up. Moreover, it was difficult to completely eliminate the foamy particles. There was also a mixer in which a perforated plate perpendicular to the rotating shaft of the axial flow stirrer was fixed to the liquid tank (Utility Model Publication No. 9-773), but the mixed liquid was rotated by the stirring blades installed on the rotating shaft. Since the fluid flows in the axial direction, the fixed pores suppress the above-mentioned swirl, and the flow resistance of the perforated plate is large.Bubble elimination due to passage through the mesh is small, and the bubble elimination effect due to circulation suppression and stirring becomes large, resulting in vibration,
The noise was so loud that it was difficult to eliminate bubbles smoothly and quickly.

``Problems to be Solved by the Invention'' The present invention aims to provide a liquid/powder mixer that can almost completely and quickly eliminate encapsulated particles within a powder in a mixed liquid.

"Means for Solving the Problems" The present invention provides an axial flow agitator in which a rotary shaft supported in a liquid tank is provided with rotary blades, in which a perforated plate for forced passage of a stirring flow along the rotary shaft is connected to the rotary shaft. It is composed of a liquid/powder mixer that is fixed in the axial and rotational directions to the rotary shaft and supported to rotate around the outer circumference of the rotary shaft.

"Function" Therefore, when the mixing liquid 16 is stored in the liquid tank 1 and the rotating shaft 2 is rotated to rotate the rotating blades 3 and the axial flow stirrer 4 is operated, the stored liquid 16 is transferred to the rotating shaft 2. After swirling in the direction of the axis 2 along the axis of rotation, the liquid flows in the opposite direction along the inner surface of the liquid tank 1, and flows again along the axis of rotation 2, producing a stirring flow due to circulation or convection. In this state, when the powder is introduced, the powder is stirred with the storage liquid 16 by the stirring flow, and the fine particles of the powder get wet with the storage liquid 16 to form a mixed liquid. However, when the powder is added, the small lumps of powder form foam particles 11, and the foam particles 11 also flow along the rotating shaft 2 with the stirring flow and rotate together with the rotating shaft 2. When the foam particles 11 are forcibly passed through the perforated plate 5, since the diameter of the foam particles 11 is larger than the diameter of the numerous holes in the perforated plate 5, the foam particles 11 are subdivided, crushed and dissolved, and the foam particles 11 are dissolved. Each of the fine particles that have been exposed to the liquid are wetted with the liquid 16 and mixed with the liquid 16. Since the perforated plate 5 is rotated by the rotary shaft 2 together with the rotary blade 3, the swirling flow caused by the blade 3 passes through the rotating perforated plate 5 in a swirling state. Since there is little suppression of swirling and little stirring due to suppression, forced passage through the perforated plate 5 is easy.

``Example'' A liquid tank 1 is supported on the machine frame, a reduction motor 7 is provided on a support frame 6 installed at the upper end opening, and the output rotating shaft 2 of the motor 7 is extended to the bottom of the liquid tank 1, and the same rotation is performed. axis 2
Two screw rotary blades 3, 3 are provided at the lower part of the screw with a gap between them. Directly below the upper rotating blade 3 is a third
A boss portion 10 of a perforated plate 5 made of a wire mesh 9 stretched inside a circular outer frame 8 as shown in the figure is fitted and supported, and a boss portion 10 of a perforated plate 5 is fitted and supported between the two blades 3, 3 as shown in FIGS. 1 and 4. A rotating vane-shaped perforated plate 5 as shown can be provided. The mesh or mesh of the wire mesh 9 of the perforated plate 5 shown in FIG. 3 may be selected and designed as appropriate, but a mesh or mesh having a diameter smaller than the diameter of the foam particles 11 shown in FIG. 6 is used. Also, instead of the wire mesh 9, a perforated punched board or lath may be used. The perforated plate 5 thus constructed is rotated together with the rotary shaft 2 by fixing the boss portion 10 to the rotary shaft 2 with the set bolts 12. The perforated plate 5 may be formed in the shape of a bottomed basket with an open top as shown in FIG. 5, or the bottom surface of the liquid tank 1 may be formed into an inverted conical hopper. In addition, what is indicated by 14 in the figure is the mixed liquid discharge pipe, 1
5 is an on-off valve provided in the pipe 14.

"Effect" Since the present invention is configured as described above, the countless foam-like particles encapsulating the powder formed by the powder introduced into the liquid contained in the liquid tank rotate with the swirling axial flow. It easily passes through the porous plate 5, and the foamy particles are crushed and dissolved by the passage, so that a powder mixture without foamy particles can be quickly obtained.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view showing the liquid/powder mixer of the present invention, Fig. 2 is a plan view of the rotary vane, Fig. 3 is a plan view of the perforated plate, and Fig. 4 is a plan view of the rotary vane type perforated plate. ,
FIG. 5 is a longitudinal cross-sectional view of another example of the perforated plate, and FIG. 6 is an explanatory diagram of a state in which foam particles are crushed. 1...Liquid tank, 2...Rotating shaft, 3...Rotating blade,
4... Axial flow stirrer, 5... Forced passage perforated plate.

Claims (1)

[Claims] 1. In an axial flow agitator in which rotating blades are provided on a rotating shaft supported in a liquid tank, a perforated plate for forced passage of stirring flow along the rotating shaft is fixed to the rotating shaft in the axial and rotational directions. A liquid/powder mixer supported to rotate around the outer circumference of a rotating shaft.