JPH0763600B2 - Horizontal cylindrical stirring crushing drying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to mixing materials under vacuum, stirring, crushing, solid-liquid extraction,
The present invention relates to a horizontal cylindrical stirring and crushing / drying device which performs batchwise operations such as concentration reaction of liquid, crystallization, drying, and granulation, and takes out.

[Prior art and its problems]

A publicly known example of this type of stirring and crushing and drying apparatus is Japanese Patent Laid-Open No. 61-18.
No. 1526 is mentioned.

The device of this known example has a mixing crushing blade that is immovable and a scraping member that rotates along the inner wall of the container. In the device of this known example, the mixing and crushing blades are immovable, so that the mixing and crushing is performed only in one part of the container. Therefore, there remains a problem that the mixed crushing is not sufficiently performed.

[Means to solve the problem and its action]

A wall-heated horizontal cylindrical container 1 for receiving a material to be handled, a rotatable stirring blade 21 installed in an inner peripheral wall region concentric with a central axis 20 thereof, and extending to an inner wall region of the container 1 and stirring. The stirring arms 22 on both sides of the blade 21 and the stirring arm 22 are eccentrically installed so as to be rotatable with respect to the shaft 3 of the container 1, and are freely rotated while rotating inside the stirring blade 21 and the stirring arms 22 on both sides of the stirring blade 21. Rotating direction and stirring blade
A horizontal cylindrical stirring and crushing heating device comprising a mixing and crushing blade 18 that can rotate at a different rotation speed from that of 21, and a detachable scraping knife on the tip of the stirring blade 21 and the arm 22.

[Action]

Since the mixing and crushing blade 18 also serving as a scraper rotates together with the stirring blade 21 and the stirring arm 22 while revolving, the container 1
Material can be mixed and crushed throughout.

The mixing and crushing blade 18 rotates on the inside of the stirring blade 21 and the stirring arm 22 which also serve to scrape off the inner wall of the container.

Then, the resistance of the adhered matter to the stirring blade 21 and the stirring arm 22 becomes constant. As a result, the mixing and crushing blade 18 also does not vibrate due to the resistance of the deposits on the inner wall, its revolution speed becomes constant, and the mixing and crushing efficiency becomes uniform.

[Explanation of Examples]

 Examples of the device of the present invention will be described below.

In the drawing, 1: horizontal cylindrical container, α in FIG. 1 is its inclination angle.

2: Bearing of the support shaft 3 of the horizontal cylindrical container 1, 3: A stirring shaft provided on the center axis 20 of the horizontal cylindrical container 1, 4: A drive device for the stirring blade 21, 5: Fixed on both sides of the stirring shaft The mixing crushing blade 18 is attached to the crusher shaft 15 by a rotating mechanism having a stirring wing 21 at the tip of the stirring arm 22 and having the crusher 6 inside.
The crusher 6 rotates inside the stirring blade 21 to mix and crush materials.

7: Bearing of the crusher shaft 15, which is attached to the rotating mechanism 5.

8: Transmission pulley or gear attached to the crusher shaft 15, 9: Transmission means of the transmission pulley or gears 8 and 10, 10: Transmission pulley or gear attached to the drive shaft 11 of the crushing drive device 12, 11: As described above Drive shaft, 12: drive device for crusher 6, 13: accommodating transmission pulley or gears 8 and 10 and transmission mechanism 9 in a space provided in stirring arm 22 for intrusion of material and leakage of lubricating oil It is sealed to prevent.

14: bearing of the drive shaft 11, 15: crusher shaft as described above, 16: supply passage for supplying a medium for granulating various materials mixed and crushed by the crusher 6.

17: Nozzle hole of the medium nozzle tube, 18: Mixing and crushing blade of the crusher 6, 18a: Crush plate, 19: Nozzle of medium agent, 20: Central axis of the horizontal cylindrical container 1, 21: Stirring blade 21a: hollow part, 22: stirring arm, 23: product discharge port, 24: knife, the tip of which forms a wedge shape in the direction of rotation, and then the constituent functions thereof will be described.

A rotating mechanism 5 is arranged in the horizontal cylindrical container 1.

The rotating mechanism 5 is provided by a bearing 2 so as to be able to rotate concentrically around the stirring shaft 3 in the horizontal cylindrical container 1.

The rotating mechanism 5 has a frame shape and includes a stirring blade 21 and stirring arms 22 on both sides. (FIG. 6) On the other hand, the crusher 6 is provided inside the stirring blade 21 while being supported by the rotating mechanism 5. Although the crusher 6 revolves with the rotation of the stirring blade, it has its own drive mechanism so as to rotate at an arbitrary number of rotations and in any rotation direction.

A cavity 13 is provided inside the stirring arm 22 on one side, and the transmission mechanisms 8, 9, and 10 are housed therein.

In the apparatus having the above structure, the materials adhering to the inner peripheral wall and the side wall of the horizontal cylindrical container 1 are scraped off by the stirring blade 21 and the stirring arm 22 and mixed and crushed by the mixing crushing blade 18.
Moreover, the clearance between the inner peripheral wall and the inner wall and the stirring blade and the stirring arm is set to about 0.5 mm to 2 mm so that the material adhering to the inner peripheral wall and the inner wall is reduced as much as possible to prevent heat transfer resistance as much as possible. If the rotation speed of the stirring blade can be raised to a maximum of 30 rpm depending on the state of the material, the heat transfer resistance due to the adhesion between one scraping and the next scraping is negligible. .

Further, when the knife 24 is detachably attached to the stirring blade 21 as shown in FIG. 2, the material attached to the inner wall of the horizontal cylindrical container 1 can be scraped more accurately.

Further, the stirring blade 21 has a mechanism in which a heat medium flows into the hollow portion 21a, so that the heat transfer from the stirring blade also gives 1/3 to 1/2 of the heat transfer amount from the inner peripheral wall to the material. Has become.

Further, it is general that two stirring blades are provided at every 180 ° as shown in FIG. 5, but three stirring blades may be provided at every 120 ° as shown in FIG.

Further, as shown in FIG. 2, the tip of the stirring blade 21 has an acute angle so as to scrape off the material without resistance, and the scraped material has a wing shape of an airplane inside so that the material can be dug without resistance. On the side of the peripheral wall, a receding angle θ is provided on the side opposite to the rotating direction in order to reduce frictional resistance. The receding angle θ is 5 ° or more.

Further, the tip of the stirring arm 22 has an acute angle so as to scrape off the material on the side wall of the horizontal cylindrical container 1 without resistance, and the side surface of the stirring arm 22 is inside the side wall of the container 1 at the retreat angle θ ′ opposite to the rotational direction. Is inclined to. This receding angle θ'is normally 1 to 2 °.

Further, the mixing and crushing blade 18 is attached at a right angle to the crusher shaft 15. A thin crush plate 18a is attached if necessary.
(FIG. 4) Further, when the crush plate 18a is twisted, the material is discharged as a smooth flow to the discharge port 23 when discharging the material. This twist corresponds to the twisting direction of the screw of the screw conveyor.

〔The invention's effect〕

Compared with the apparatus of the prior art, the mixing and crushing blade 18 revolves along with the stirring blade 21 and the stirring arm 22 while revolving around its axis, so that the mixing and crushing is completely performed in the entire inside of the container 1.

Further, the rotation speeds of the stirring blade 21 and the stirring arm 22 are constant by eliminating the resistance of the inner wall attachment due to the scraping function. As a result, the mixing and crushing blade 18 also has no vibration due to the resistance of the material adhering to the inner wall, the revolution speed thereof is constant, and the mixing and crushing efficiency is uniform.

[Brief description of drawings]

 FIG. 1: Cross-sectional view of the apparatus of the present invention, FIG. 2: Side view of stirring blade 21, FIG. 3: Plan view of stirring arm 22, FIG. 4: Front view of mixing and crushing blade 18, FIG. An example of attaching the wing is shown. Fig. 6: Front view of rotating mechanism, 1: Horizontal cylindrical container, 3: Mixing shaft, 6: Crusher, 13: Void, 15: Crusher shaft, 18: Mixing blade, 21: Mixing blade, 22: Mixing Arm, 24: knife.

Claims (11)

[Claims] 1. A wall-heated horizontal cylindrical container 1 for receiving a material to be handled, and a rotatable container which is installed concentrically with respect to its central axis 20 in the inner peripheral wall region and extends in the inner wall region of the container 1. Stirring blade 21 and stirring arms 22 on both sides of stirring blade 21
And is rotatably installed eccentrically with respect to the shaft 3 of the container 1, and is freely rotatable while rotating inside the stirring blades 21 and the stirring arms 22 on both sides of the stirring blades 21. The horizontal cylindrical stirring and crushing and drying apparatus is characterized by comprising a mixing and crushing blade 18 that can be rotated at a different rotation speed from, and a scraping knife that can be attached to and detached from the tip of the stirring blade 21 and the arm 22. 2. The apparatus according to claim 1, wherein the number of revolutions of the stirring blade 21 can be freely changed at 30 rpm or less. 3. The apparatus according to claim 1 or 2, wherein the cross section of the stirring blade 21 is hollow so that a heating medium can pass through it. 4. An apparatus according to any one of claims 1 to 3, wherein two stirring blades (21) are installed on the stirring shaft (3) every 180 ° or three at every 120 °. 5. The apparatus according to any one of claims 1 to 4, wherein the shape of the stirring blade 21 is sharp at the tip in the rotational direction and the inside is streamlined like an airfoil of an airplane. 6. The apparatus according to claim 1, wherein the peripheral wall side of the stirring blade 21 has a receding angle θ, and the angle is equal to or larger than 5 °. 7. The shape of the stirring arm 22 is such that the tip end in the rotational direction, and the opposite side in the rotational direction of the surface of the horizontal cylindrical container 1 facing the inner surface blade has a receding angle θ ′ that inclines inward. The apparatus according to any one of claims 1 to 6, wherein θ'is around 2 °. 8. The mixing and crushing machine 16 which is installed inside the stirring blade 21 and rotates about its own axis is driven by a transmission mechanism incorporated in the stirring arm 22, and any one of claims 1 to 7 is set forth. The device according to. 9. The apparatus according to any one of claims 1 to 8, wherein the mixing and crushing machine 16 has a large number of mixing and crushing blades 18 mounted at right angles to the crushing machine shaft 15. 10. The apparatus according to any one of claims 1 to 9, wherein a crush plate 18c is attached to the mixing crush blade 18. 11. The apparatus according to claim 1, wherein the crushing plate 18a is twisted so that the material inside is crushed and is conveyed toward the discharge port at the same time.