JP2001000846A - Rotary mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the lowering of scraping capacity due to the gradual deposition of raw material on a raw material scraper plate provided within a rotary mixer in the mixing by the mixer. SOLUTION: A raw material scraper plate 3 is invertibly mounted on the inner-wall side of a rotary cylinder, and a rotation impeding member 7 movable in the radial direction of the rotary cylinder is provided to the scraper plate 3. The member 7 is moved on the inner-wall side of the cylinder to impede the rotation of the scraper plate 3. Consequently, the scraper plate is erected in scraping and inverted when scraping is not needed, and the raw material depositing on the scraper plate is removed without deteriorating the scraping function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary mixer used for the purpose of fermentation treatment of organic substances and uniform mixing of materials.

[0002]

2. Description of the Related Art Organic substances such as garbage, livestock dung, agricultural waste, food processing residues, and sludge are aerobically fermented to effectively recover or reduce the volume of soil as a soil conditioner or organic fertilizer. As a method for facilitating disposal, a fermentation apparatus using a rotary mixer is known. In the mixer, the organic matter is contained in the rotating cylinder as a raw material,
If necessary, the inside of the rotating cylinder is adjusted to an appropriate environment, and the organic matter is mixed and stirred while the rotating cylinder is rotated to perform fermentation treatment. In the fermentation treatment, the more appropriate the mixing and stirring of the organic substances, the higher the fermentation efficiency. For this reason, conventionally, as shown in FIG. 3, a mixer in which scraping plates 11... 11 along the axial direction of the rotating cylinder 10 are arranged at equal intervals in the circumferential direction on the inner wall of the rotating cylinder 10 is used. ing. In this mixer, the raw material 12 is surely scraped up by the scraping plates 11... 11 with the rotation of the rotary cylinder 10, so that the stirring efficiency is improved, and thus the fermentation efficiency is improved.

[0003]

However, since the raw materials used in the above treatment have a high water content and some stickiness at first, if the stirring and mixing are carried out by the above-mentioned mixer, the scraping plate 11 is gradually removed. It adheres to the surface and its surrounding wall, and eventually the scraping plate 11 itself is covered with the adhered raw material 12a. When the raw material adheres to the scraping plate 11 and its surrounding wall in this way, the periphery of the scraping plate forms a gentle surface, the original scraping ability of the scraping plate decreases, and the raw material is effectively stirred and mixed. You can't do that. For this reason, it is necessary to periodically remove the raw material adhering to the scraping plate.
This will remove the raw material directly attached. However, there is a problem that this work is very troublesome and is not good as a working environment. Also, as a method of removing the raw material attached to the scraping plate, a method of applying vibration to the rotating cylinder with an external vibrator to drop the attached matter can be considered. There is a problem that an extra load is applied and the durability is impaired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotary mixer capable of easily removing raw materials attached to a stirring plate in a mixer without manual operation. .

[0005]

In order to solve the above-mentioned problems, a first aspect of the rotary mixer according to the present invention is that a raw material scraping plate is provided on an inner wall of a rotating cylindrical body which accommodates and rotates raw materials. A rotary mixing machine for mixing the stored raw materials by rotating the rotary cylinder, wherein the raw material scraping plate is positioned below the rotary cylinder with the rotation of the rotary cylinder. The plate is held upright against the inner wall of the rotating cylinder, and the scraping plate is tilted to the inner wall side of the rotating cylinder while the raw material scraping plate is positioned above the rotating cylinder. It is characterized by having a plate inversion / standing mechanism.

The rotary mixer according to a second aspect of the present invention is the rotary mixer according to the first aspect, wherein a fixed plate is provided upright on the inner wall of the rotary cylinder as a scraping plate inverting / standing mechanism, and the rotary plate is mounted on the fixed plate. The scraping plate is mounted so that the scraping plate can be turned upside down by a hinge having a rotation axis substantially along the axial direction, and the raw material scraping plate is provided with a rotation preventing member movable along the radial direction of the rotating cylinder. The rotation preventing member is characterized in that it has a structure for preventing the raw material scraping plate from falling down while moving to the mounting and fixing plate portion.

A rotary mixer according to a third aspect of the present invention is the rotary mixer according to the first or second aspect, wherein the rotary mixer is in contact with a scraping surface of the scraping plate in a region where the scraping plate falls down and moves in the rotary cylinder. A scraping member for scraping off the raw material attached to the surface is provided.

As described above, the mixer of the present invention is suitable as an apparatus used for the fermentation treatment of organic matter.
The present invention is not limited to this use, and can be used as a mixer for various uses used for mixing raw materials. In the present invention, a rotary cylinder and a drive source for driving the rotary cylinder have a main structure. The rotating cylinder is usually provided as a bottomed cylinder, but the shape is not limited as long as it is a cylinder, and may be, for example, an elliptical cylinder or a polygonal cylinder. In addition, the type of the driving source that rotationally drives the cylindrical body is not particularly limited, and may be configured by, for example, a motor.

Further, a scraping plate is provided on the inner wall surface of the rotary cylinder. The arrangement direction of the scraping plate may be substantially along the direction of the rotation axis of the rotary cylinder, and may be arranged along a direction intersecting the rotation axis at a predetermined angle. The arrangement directions of the raised plates may be different. The number of scraping plates may be one, or a desired number of scraping plates may be provided. When a plurality of scraping plates are arranged, they are usually provided at equal intervals, but the intervals between adjacent scraping plates can be different. The shape of the scraping plate for scraping is not particularly limited, and may be, for example, a flat plate shape or a comb-shaped tip.

In the present invention, the scraping plate is provided with an inverting / standing mechanism for standing up or down depending on the rotational position of the rotary cylinder as described above. In this inverting / standing mechanism, in a state where the raw material scraping plate is located below the rotary cylinder, the raw material scraping plate is held upright with respect to the rotary cylinder, and the raw material scraping plate is rotated by the rotary cylinder. It has a function of tilting the scraping plate toward the inner wall side of the rotating cylinder while being positioned above the body.
Although a specific structure for achieving this function is not limited, as shown in the second invention, the raw material scraping plate is made rotatable, and the raw material scraping plate is moved or rotated with the rotation of the rotary cylinder. The above function can be obtained by providing a member. The raw material scraping plate, when scraping the raw material with the rotation of the rotating cylinder, by the upside down mechanism,
For example, the rotation of the scraping plate is prevented by the rotation prevention member,
Since the standing state is maintained, the raw material can be surely scraped up. For this reason, it is necessary for the inverting / standing mechanism to maintain a standing state so that the scraping plate does not fall even by the scraping load of the raw material. Also, in the state where the scraping plate is located above the rotating cylinder and scraping is not required,
By the falling / standing mechanism, for example, the function of the rotation preventing member is released, and the rotatable scraping plate is rotated by its own weight to be in a falling state. Accordingly, even when the raw material adheres to the scraping plate, the raw material easily falls, so that it is possible to prevent the raw material from adhering and accumulating while increasing the amount on the surface of the scraping plate.

[0011] The scraping plate falls and stands on the upper and lower sides of the rotary cylinder, but it is not particularly limited where the upper and lower parts start to fall and stand. The inversion / standing start position can be appropriately determined. Also,
In order to promote the falling of the raw material, the scraping plate moves to the upper side inside the rotating cylinder and no scraping is required. It is desirable to arrange. By fixing the scraping member at an appropriate position, the scraping plate that moves with the rotation of the rotary cylinder comes into contact with the scraping member, and the scraping is automatically performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The rotating cylinder (cylindrical body) 1
Both sides are closed by an opening / closing door (not shown), and the central rotating shaft 1a
Is connected to a drive device (not shown). A scraping plate 3 is provided on the inner peripheral wall of the rotary cylinder 1 so as to stand in the radial direction along the rotation axis direction, and the scraping plates 3 are arranged at intervals of 45 degrees along the inner peripheral surface direction. A plurality is provided. The scraping plate 3 is, as shown in FIG.
Is fixed rotatably to a mounting plate 4 erected along the direction of the center rotation axis by a hinge 5 on the inner peripheral wall of the rotary cylinder 1 on a surface opposite to the rotation direction of the rotary cylinder 1. It is fixed to the scraping plate 3 and the mounting fixing plate 4. Therefore, the scraping plate 3 can rotate only in the direction opposite to the rotation direction of the rotary cylinder 1. In addition, scraping board 3
A bent portion 3 which is bent almost at a right angle to the rotation direction side
1 is formed, and a through hole 32,
32 are formed. The slide pins 71, 71 of the rotation preventing member 7 penetrate through the through holes 32, 32. At the ends of the slide pins 71, 71 on the inner wall side of the cylinder,
A support plate 72 is fixed, which can be in contact with the inner wall surface of the rotary cylinder 1 and the fixing plate 4 and which prevents the slide pins 71, 71 from coming out of the through holes 32, 32. A weight plate 73 is provided at the other end of the slide pins 71, 71.
Has been fixed. The support plate 72 also functions as a weight plate. The structure of the rotation preventing member is not limited to the above-described structure, and the structure that can be moved in the substantially radial direction (in the rotating cylinder) with respect to the scraping plate is not particularly limited. Further, as a structure for preventing the rotation of the scraping plate when the rotation preventing member moves to the rotary cylinder side, a support portion such as the above-described support plate is provided, and the support portion partially contacts or engages with the rotary cylinder side. Or any other material that prevents rotation of the scraping plate.
The support portion does not necessarily have to be provided at the end of the rotation preventing member on the side of the rotating cylinder, and may be any member provided at an appropriate position of the rotation preventing member and cooperating with the rotating cylinder. A raw material scraping member 9 that contacts the upper surface side of the scraping plate 3 is provided above the rotary cylinder 1 and near the track on which the scraping plate 3 moves as the rotating cylinder 1 rotates. The position of the member is fixed even when the rotary cylinder 1 rotates.

The operation of this embodiment will be described below. A predetermined amount of an organic substance 8 as a raw material is accommodated in the rotating cylinder 1, and the rotating cylinder 1 is rotated counterclockwise in FIG. 1 by a rotation driving device (not shown). With this rotation, the scraping plate 3 also rotates together with the rotary cylinder 1. In the case where the scraping plate 3 is located below the rotary cylinder 1 during the rotation, in FIG. 1, in steps 1 to 4, the rotation preventing member 7 is The support plate 72 of the rotation preventing member 7 is in a state of being moved down to the inner wall side of the body 1.
Are in contact with the inner wall surface of the rotary cylinder 1. In this state, when the scraping plate 3 tries to rotate around the hinge 5 as a fulcrum, the support plate 7
Since the plate 2 comes into contact with the fixing plate 4, the rotation of the scraping plate 3 is prevented. Further, since the scraping plate 3 cannot rotate in the reverse direction, as a result, the scraping plate 3 is kept in a standing state. The scraping plate 3 scrapes up, stirs, and mixes the contained organic matter 8 with the rotation of the rotary cylinder 1. Then, when the scraping plate 3 reaches the position of the step 4a beyond the step 4 by the rotation of the rotary cylinder 1, it is turned obliquely downward, so that the rotation preventing member 7
The support plate 72 moves diagonally downward by its own weight while being supported by the support plates 2 and 32, and finally the support plate 72 comes into contact with the bent portion 31 of the scraping plate 3. The movement of the rotation preventing member 7 allows the scraping plate 3, whose rotation has been prevented, to rotate, and rotates downward due to its own weight and the weight of the rotation preventing member 72 that has moved diagonally downward, and is in a suspended state. become. As a result, the raw material 8a attached to the scraping plate 3 falls. At this time, since the rotation preventing member 7 is slid downward, the rotation moment is increased, and the rotation of the scraping plate 3 is promoted. Efficiency is improved.

When the rotation of the rotary cylinder 1 further proceeds and the position of the scraping plate 3 reaches step 5, one surface of the scraping plate 3 comes into contact with the scraping member 9. Also in this contact, the scraping plate 3 moves with the rotation of the rotary cylinder 1, so that the scraping plate 3 comes into a state of pressing itself against the scraping member 9, and the raw material 8a attached to the surface thereof is securely removed. And is stripped off by the scraping member 9. When the scraping plate 3 further moves, as shown in step 6, the scraping member 9 is moved.
Is released from the contact, and the process goes from step 7 to step 8. At this time, since the scraping plate 3 is not allowed to rotate in the rotation direction side of the rotary cylinder 1, it remains standing against the inner wall of the rotary cylinder by its own weight. When the rotary cylinder 1 is further rotated, the scraping plate 3 reaches the step 8a and is in a state of facing obliquely upward. Then, a downward moving force acts on the rotation preventing member 7 by its own weight, so that the guide pins 71, 71 move diagonally downward while being supported by the through holes 32, 32, and finally, the support plate 72. Comes into contact with the inner wall surface of the rotary cylinder 1 and stops. In this state, the rotation of the scraping plate 3 is prevented as described above, so that the raw material 8 is moved up together with the rotating rotary cylinder 1 and scraped up. By repeating the above process, raw material 8
Can be efficiently stirred and mixed, and the raw material can be prevented from gradually accumulating on the scraping plate 3, so that the scraping ability can always be kept good.

In the above-described embodiment, a mixer for mixing and stirring organic substances has been described. However, the present invention is not limited to this, and there is a problem that the adhesion of the raw material to the scraping plate becomes a problem. It can also be applied to applications.

[0016]

As described above, according to the rotary mixer of the present invention, with the rotation of the rotary cylinder, the raw material scraping plate is positioned below the rotary cylinder so that the scraper can be removed. The scraping plate is held upright against the inner wall of the rotating cylinder, and the scraping plate is tilted toward the inner wall of the rotating cylinder while the raw material scraping plate is positioned above the rotating cylinder.・ With the vertical mechanism, the raw material adhering to the scraping plate can be removed reliably and inexpensively with the rotation of the mixer, eliminating the need for manual cleaning and removal work and costly removal equipment. The mixing capacity is always kept good.

Further, in a region where the scraping plate falls down and moves in the rotary cylinder, a scraping member which comes into contact with the scraping surface of the scraping plate and scrapes off the material adhered to the surface is arranged. The removal of the raw material adhering to the surface becomes more reliable.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of the scraping plate.

FIG. 3 is a front sectional view showing a conventional mixer.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating cylinder 3 scraping plate 32 through hole 4 mounting fixing plate 5 hinge 7 rotation preventing member 71 slide pin 72 support plate 8 raw material 8a attached raw material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Otani 1-6-1, Funakoshi Minami, Aki-ku, Hiroshima City, Hiroshima Prefecture Inside Japan Steel Works, Ltd. (72) Inventor Masakazu Yokota 1-chome, Funakoshi-minami, Aki-ku, Hiroshima City, Hiroshima Prefecture No.6-1 F-term in Japan Steel Works, Ltd. (Reference) 4D004 AA02 CA15 CA18 CA50 CB09 CB50 CC08 4G036 AA04

Claims (3)

[Claims] 1. A rotary mixer in which a raw material scraping plate is provided on an inner wall of a rotating cylinder that accommodates and rotates a raw material and the raw material is mixed by rotation of the rotary cylinder. Along with this, in a state where the raw material scraping plate is positioned below the rotary cylinder, the raw scraping plate is held upright against the inner wall of the rotary cylinder, and the raw material scraping plate is positioned above the rotary cylindrical body. Rotary mixing machine having a scraping plate tilting / standing mechanism for tilting the scraping plate to the inner wall side of the rotary cylinder while being positioned on the side 2. A scraping plate falling and standing mechanism, wherein a fixed plate is mounted on the inner wall of the rotating cylinder and is erected by a hinge having a rotation axis substantially in the axial direction of the rotating cylinder. Is mounted so that it can be turned upside down, and the raw material scraping plate is provided with a rotation preventing member movable along the radial direction of the rotating cylinder, and the rotation preventing member is attached to the mounting fixed plate portion. 2. A structure for preventing a raw material scraping plate from falling down in a state where the raw material scraping plate has been moved to a predetermined position.
Rotary mixer plate described 3. A scraping member which is in contact with a scraping surface of the scraping plate and scrapes off the raw material adhering to the scraping plate is disposed in a region of the rotating cylinder in which the scraping plate falls and moves. The rotary mixer according to claim 1 or 2,