JP2002172319A - Rotary mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary mixer which mixes raw materials contained therein and is prevented from the decrease in scrape-up capacity due to the deposition of the raw materials on a scrape-up plate set up in the inside. SOLUTION: In a rotary cylinder 1, a scrape-down member 5 which, when the cylinder rotates, is pushed against a scrape-up member 4 and removes the deposited raw materials is arranged. When pushed against the scrape-up member 4, the scrape-down member 5 removes the deposited materials 3a while following the scrape-up member 4; and then, the member 5 is freed from pushing and returns to the original position where it is before being moved. Thus, raw materials deposited on the scrape-up surface can be automatically removed at a low cost, enabling the scrape-up capability, i.e., mixing capability, to be maintained high.

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 uniformly mixing fermentation raw materials and the like.

[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 this mixer, organic matter is contained in a 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. 6, a scraping plate 2 extending in the axial direction of the rotary cylinder 1 and perpendicular to the inner wall is provided on the inner wall of the rotary cylinder 1 as a processing tank in the circumferential direction. Mixers arranged at intervals are used. In this mixer, the target raw material 3 is accommodated in a rotating cylinder 1, and the rotating cylinder 1 is driven by a driving source (not shown).
To rotate. The scraping plate 2 attached to the inner wall of the tank moves with the rotation of the cylindrical body 1 and lifts the raw material 3 from the bottom of the tank to the upper part of the tank to promote the stirring of the raw material. In this mixer, the stirring efficiency is improved and the fermentation efficiency is improved because the stirring is performed by the scraping plate 2 without fail.

[0003]

However, the raw materials used in the above treatment have a high water content at first and are somewhat viscous. Therefore, when the raw materials are stirred and mixed by the above mixer, the raw materials are deposited on the scraping plate and the inner wall of the tank. It gradually adheres, and eventually the scraping plate is covered with the raw material. When such a raw material adheres, the raw material 3a forms a gentle surface around the scraping plate, and the original scraping ability of the scraping plate is reduced, so that the raw material cannot be effectively stirred. And
In order to remove the raw material adhering to the fixed scraping plate, a worker must periodically enter the inside of the tank and directly remove the adhered raw material, which is very time-consuming and requires the worker to enter the equipment. Is not desirable in terms of safety. In addition, there is a method of dropping the adhered substance by vibration from the outside of the tank. However, the vibrator itself is expensive, and there is a problem that an excessive load is applied to the rotary cylinder and the durability of the tank is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional rotary mixer as described above, and the raw material adhering to the raw material scraping portion in the mixer can be easily and without any manual operation. It is an object to provide a rotary mixer that can be automatically removed.

[0005]

Means for Solving the Problems To solve the above problems, a first aspect of the rotary mixer according to the present invention is a scraper which projects inwardly on an inner wall of a rotating cylindrical body which accommodates and rotates raw materials. A rotary mixing machine that mixes the contained raw materials by rotating the rotary cylinder, wherein the rotary cylinder is pressed against the scraping portion with the rotation of the rotary cylinder. A scraping member for removing the raw material adhering to the portion from the scraping portion is arranged, and the scraping member is attached to the scraping member with the rotation of the rotary cylinder when the scraping member is pressed against the scraping portion. The apparatus is characterized in that it is configured to move while following the provided copying surface to remove the adhered raw material, and then to release the pushing against the scraping portion and to return to the position before the movement.

A rotary mixer according to a second aspect of the present invention comprises
In the invention, the scraping member is attached to a bridging member bridging between lids respectively arranged at both axial ends of the rotary cylinder.

A rotary mixer according to a third aspect of the present invention comprises
Alternatively, in the second invention, a copying surface is formed such that the scraping-up portion moves at least the pressing portion of the scraping member to the center side of the rotary cylinder with the rotation and pressing of the rotary cylinder. It is characterized by being. A rotary mixer according to a fourth aspect of the present invention is the rotary mixer according to any one of the first to third aspects, wherein the scraping portion is substantially perpendicular to the inner wall of the rotary cylinder and extends along the axis of the rotary cylinder. It has a plate shape attached, and further, the plate surface in the rotation direction of the rotating cylinder is a scraping surface and a copying surface, and is located further toward the rotation direction rearward toward the center of the rotating cylinder. It is characterized by being inclined as follows.

[0008] A rotary mixer according to a fifth aspect of the present invention is a rotary mixer.
Alternatively, in the fourth invention, the scraping member is rotatable by a rotating shaft along the axial direction of the rotating cylinder, and a distal end side of the scraping member is a pressing portion. A rotary mixer according to a sixth aspect of the present invention is the rotary type mixer according to the fifth aspect, wherein the scraping member has a biasing unit that resists the rotation caused by the pressing. A rotary mixer according to a seventh aspect of the present invention is the rotary mixer according to the fifth or sixth aspect, wherein the shaving member is provided at a distal end of a shaving member main body rotatable by the rotary shaft. It consists of a structure in which the pressing members are rotatably connected by a rotating shaft along the direction,
It is characterized by having biasing means for resisting rotation of the pressing member due to pressing.

As described above, the mixer of the present invention is suitable as an apparatus used for the fermentation treatment of organic matter, but the present invention is not limited to this application, and various applications used for mixing raw materials can be used. Can be used as a mixer. One or two types of raw materials may be used, and the purpose may be to stir the raw materials or to uniformly mix a plurality of types of raw materials. In addition, raw materials to be mixed are appropriately selected according to the use. However, the present invention is particularly suitable for a fermentation treatment apparatus that mixes an organic substance that is viscous and tends to cause the raw material to adhere to the scraping section.

In the present invention, a raw material scraping section is provided on the inner wall surface of the rotary cylinder. The scraping portion is provided so as to protrude from the inner wall surface to the inner peripheral side, and scrapes the raw material at the protruding portion. The scraping portion is usually arranged along the rotation axis direction of the rotary cylinder. The number of the scraping portions may be one, or a plurality of the scraping portions may be provided at intervals in the circumferential direction of the rotary cylinder.

Although various shapes can be considered as the shape of the scraping portion, a plate-like shape which is installed substantially vertically to the inner surface wall of the rotary cylinder and along the axial direction of the rotary cylinder is exemplified. Can be In addition, the scraping portion of the present invention is preferably a shape suitable for this operation because the scraping member described below presses and removes the adhered raw material, and the shaving member moves in accordance with the essential configuration. It has a copying surface. The copying surface is formed so that the scraping member can copy and move to remove the adhered raw material of the scraping portion. In addition to being integrated with the entire scraping portion, a main portion of the scraping portion is also provided. It may exist at a distance from.

The copying surface is desirably formed so that the scraping member pressed against the scraping portion is copied to the inner peripheral side of the rotary cylinder. Thereby, the raw material adhering to the scraping section can be easily removed, and the scraping member can be smoothly moved to a position where the scraping member does not interfere with the scraping section, thereby allowing the scraping section to pass. In addition, the copying surface may be assigned to the scraping surface, so that the scraping member can scrape off the adhered material at that portion while following the scraping portion. As the above-mentioned shape, preferably, as shown in the third invention, the copying surface is on the rotation direction side (in the rotary cylinder) of the plate-like scraping portion attached substantially perpendicular to the inner wall of the rotary cylinder. And a plate surface which is inclined toward the center of the rotary cylinder toward the rear side in the rotation direction. Also,
The copying surface of the plate surface is desirably formed as a concave surface with respect to the rotation direction of the rotary cylinder so that the scraping member can be copied more smoothly without impairing the scraping function.

On the other hand, the scraping member for removing the raw material adhering to the scraping portion by pressing against the scraping portion is rotated together with the rotary cylinder so as to be pressed against the scraping portion. It is movably arranged in the vicinity of the rotation trajectory of the scraping unit. However, it is arranged so that the scraping part can pass by the movement. It should be noted that the scraping member only needs to be pressed against the scraping portion by changing its position relative to the scraping portion along with the rotation of the rotary cylinder. Although it may involve movement of the position, it is usually placed at a fixed position (following movement is performed), and in many cases, between the lids arranged at both axial ends of the rotary cylinder. It is attached to the erection member. The scraping portion moves by rotating the rotary cylinder body with respect to the scraping portion, so that the scraping member can sufficiently function even at one location. However, the location of the scraping member is not limited to one location, and a plurality of scraping members may be provided at intervals in the circumferential direction of the rotary cylinder. With a plurality of arrangements, the scraping operation can be performed a plurality of times.

When the scraping portion is pressed against the scraping member by the rotation of the rotary cylinder as described above in the present invention, the scraping member moves along the copying surface of the scraping portion. This movement is, in addition to the position movement in a certain direction,
It may be a rotational movement or a combination thereof. In the scraping member, the portion that follows the copying surface of the scraping portion has its position and shape determined in accordance with the copying surface of the scraping portion, but may be a pressing portion for removing adhered raw material, , Or other parts. Normally, the pressing portion for removing the attached raw material also serves as the copying portion. The pushing portion normally has a function of pushing against the scraping surface of the scraping portion and scraping off the raw material attached to the scraping surface. Therefore, it is desirable that the pressing portion has a shape and a structure suitable for performing this function.

Further, the scraping member of the present invention is provided with a mechanism for removing the adhered raw material, removing the material from the rotational orbit of the scraping section, and returning to the original position after the scraping section has passed. The specific structure for performing this function is not particularly limited. As the structure, a structure using elastic force can be adopted.For example, a structure in which a member is supported by a spring jig, or a member such as a horizontal lid of a rotary cylindrical body that can be changed by pneumatic operation, may be used. Air pipes and valves are provided to allow air to be supplied from outside the cylinder,
Open the valve at the timing when the scraping member contacts the scraping part to release air, and supply the air at the timing when the scraping plate passes to obtain the above function of returning to the original angle again. Can be.

The scraping members described above include:
An example is shown in which the scraping member is made rotatable by a rotating shaft substantially along the axial direction of the rotating cylinder, and a distal end side of the scraping member is pressed against the scraping member. According to this aspect, the scraping portion presses against the pressing portion of the scraping member as the scraping portion rotates, and the scraping member rotates while removing the attached raw material. Further, in the above configuration, it is possible to provide an urging means for preventing the pressing portion side of the scraping member from rotating by the pressing. As a result, when the scraping member rotates, the pressing force against the scraping portion can be appropriately maintained against the inward movement, and the scraping member is quickly moved after the scraping portion passes. The function of returning to the front position is obtained. The urging force only needs to be applied at a necessary time, and may be an urging force that is always applied, or may be an element that starts to act after the scraping member moves following the movement. As the urging means, a spring utilizing elastic force of steel or the like or a device utilizing elastic force of air, liquid or the like can be used, and the present invention is not limited to a specific one.

Further, in the above-mentioned structure in which the scraping member is rotated and moved by the scraping member main body, the pressing portion is provided at the distal end of the shaving member main body in the axial direction of the rotary cylinder. Can be rotatably connected to each other by a rotating shaft along the front end, and the front end side can be used as a pressing portion. Accordingly, when the pressing portion scrapes off the raw material, the pressing portion rotates and the contact attitude with respect to the scraping portion changes, so that the scraping function can be more favorably obtained. Further, it is desirable to provide a biasing means for preventing the pressing portion from rotating by the pressing. For example, when the pressing portion attempts to rotate toward the center of the rotary cylinder due to the pressing, an urging means is provided to resist this rotation. By providing the above-mentioned urging means, the posture of the contact portion can be appropriately maintained, the adhered material can be removed satisfactorily, and the posture before the copying movement can be reliably and promptly returned after the adhered material is removed.

When the rotary cylinder continues to rotate and the scraping portion passes through the scraping member portion as described above, the scraping member again receives a reaction force of a spring supporting the member and air is supplied thereto. After returning to the initial position and posture, the next scraping section is ready for scraping raw materials. When the scraping member returns to the pre-movement position, the scraping member does not interfere with the rotation of the scraping portion because the scraping member is not in contact with the scraping portion and is in a position or posture that does not interfere with the scraping portion. On the other hand, the scraping unit scrapes the raw material to be treated contained in the rotary cylinder in the rotation direction of the rotary cylinder with the rotation of the rotary cylinder, thereby promoting the stirring effect.

Further, when the rotary cylinder continues to rotate and the scraping portion passes through the raw material and moves to a position where the scraping member is attached, for example, to the upper portion of the rotary cylinder, the scraping member contacts the scraping portion again. In the same manner as described above, the raw material adhering to the scraping member is scraped off from the scraping portion, and thereafter, the pressing against the scraping portion is released and the position before the movement is returned. By repeating these operations, the function of the scraping section is maintained, and the raw materials contained in the rotary cylinder are continuously and well mixed.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. The rotating cylinder 1 is closed on both sides with an opening / closing door (not shown), and a driving device (not shown) is connected to the center rotating shaft 1a. A scraping plate 4 is provided on the inner wall of the rotary cylinder 1 as a scraping part, which stands radially along the rotation axis and protrudes inward. The scraping plate 4 has a surface perpendicular to the inner surface of the rotating cylinder 1 on a side that is not the rotating direction side of the rotating cylinder 1, and the rotating direction side of the cylinder is closer to the center of the rotating cylinder 1 from the installation side of the rotating cylinder 1. , The surface is inclined so as to be located further rearward in the rotation direction of the rotary cylinder 1, and the surface has a concave curved surface 4 a in the rotation direction. The concave curved surface 4a functions as a scraping surface and a copying surface.

In the vicinity of the orbit on which the scraping plate 4 moves with the rotation of the rotating cylinder 1 above the rotating cylinder 1, it comes into contact with the concave curved surface 4 a of the scraping plate 4. A plate-shaped scraping member 5 is arranged along the axial direction of the rotary cylinder 1. In addition, pipes 6 and 7 are installed as bridge members between the opening and closing lids so as to be close to the scraping member 5, and the pipe 7 is located outside the pipe 6. The scraping member 5 has one end side of a shaving member main body 5a forming a part of its configuration rotatably attached to a pipe 6 via a hinge 8.
Is located in a position in which the distal end is located on the rear side in the rotation direction of the rotary cylinder 1, and in a normal position, the distal ends are located outside the orbit of the scraping plate 4 and interfere with each other, On the other hand, the main portions of the pipes 6 and 7 and the main body 5a on the rotating shaft side are located inside the track. A coil spring 10 is mounted between the pipe 7 and a position on the centrifugal side of the rotation axis of the scraping member 5, so that the scraping member 5 is in a neutral state in the normal posture described above.
Is adjusted to apply a pulling force to the scraping-off member main body 5a, that is, an urging force against rotation of the main body 5a toward the center of the rotating cylinder when the body rotates toward the center of the rotating cylinder 1. . Therefore, the normal posture is maintained by the biasing force until the scraping member 5 comes into contact with the scraping portion 4.

Further, at the distal end of the main body 5a,
A plate-shaped pressing plate 5b whose longitudinal surface extends in the axial direction of the rotary cylinder is rotatably mounted as a pressing member by a rotating shaft extending in the axial direction of the rotary cylinder. The pressing plate 5b is located substantially along the inner peripheral surface of the rotary cylinder 1, and the end on the rear side in the rotation direction of the rotary cylinder is assigned to the pressing portion. In addition, pressing plate 5b
The coil spring 11 is attached between the end of the rotary cylinder body on the rotation direction side and the position from the centrifugal end of the shaving member main body 5a to the position from the rotary shaft, and is in a neutral state in the normal posture. When the pressing plate 5b rotates toward the center of the rotary cylinder 1, the pulling force against the pressing plate 5b, that is, the urging force against the rotation of the pressing plate 5b toward the center of the rotary cylinder, is applied. It has been adjusted to work. Therefore, the pressing plate 5b is kept in the normal posture by this urging force until it comes into contact with the scraping portion 4. The springs 10 and 11 only need to have a reaction force enough to maintain the normal position of the scraping member when the scraping member 5 does not contact the scraping portion 4.

The operation of this embodiment will be described below. A predetermined amount of an organic substance 3 as a raw material is accommodated in the rotating cylinder 1, and a rotation driving device (not shown) and a rotation shaft 1.
The rotary cylinder 1 is rotated in the counterclockwise direction through the line a as shown in FIG. With this rotation, the scraping plate 4 also rotates with the rotary cylinder 1. In steps 1 to 3 in FIG.
The concave curved surface 4a of the scraping plate 4 scrapes up, agitates, and mixes the organic substance 3 accommodated in the rotary cylinder 1. During this time,
The scraping member main body 5a and the pressing plate 5b are held in a normal posture by springs 10 and 11. Then, when the scraping plate 4 reaches the position of the step 4 after the step 3 by the rotation of the rotary cylinder 1 and reaches the position of the step 4, the scraping plate 4 comes into contact with the pressing portion at the tip of the pressing plate 5b.

FIG. 4 shows the details of step 4. Process 4-
As shown in FIGS. 1 and 4-2, even in this contact, the scraping plate 4 moves with the rotation of the rotary cylinder 1, so that the concave curved surface 4 a of the scraping plate 4 is pressed against the plate 5 b by itself. Become. The pressing plate 5b is pressed by the rotating and moving concave curved surface 4a, and is a scraping surface.
While rotating the raw material 3 attached to the surface, the raw material 3 is simultaneously rotated along the curved surface to change the angle. At this time, the main body 5a to which the pushing plate 5b is attached is simultaneously rotated to change the angle, and finally comes off the rotation track of the scraping plate 4 together with the pushing plate 5b. During this time, the body 5a and the pushing plate 5b do not change their angles extremely even when pushed by the scraping plate 4 due to the reaction force of the springs 10 and 11, and the tip of the pushing plate 5b is scraped by the scraping plate. 4 along the concave curved surface 4a. As the pushing plate 5b moves, the raw material 3a attached to the scraped-up concave surface 4a is reliably scraped off.

When the rotation of the rotary cylinder 1 further proceeds and the position of the scraping plate 4 moves, as shown in step 4-3, only the plate 5b has been extended, and the spring 11 whose load has been released is released. Pressing plate 5 because it returns to the original length
b returns to the original position again. When the rotation of the rotary cylinder 1 further proceeds and the position of the scraping plate 4 moves, step 4-4
As shown in FIG. 5, the contact between the scraping plate 4 and the pressing plate 5b is completely released, and the extended spring 10 releases the load and returns to the original length, so that the main body 5a is returned to the original position. Go back. From this state, the scraping plate 4 rotates together with the rotating cylinder 1 that continues to rotate, and scrapes the raw material 3. By repeating the above process, the raw material 3 can be efficiently stirred and mixed, and since the raw material can be prevented from gradually accumulating on the scraping surface of the scraping plate 4, the scraping ability can always be kept good. it can.

FIG. 5 shows another embodiment in which the support structure of the body 5a of the scraping member and the pressing plate 5b is provided with bellows-shaped air bags 15, 16 and an air pipe 17.
And a structure provided with a valve. FIG.
The detailed process is shown below. Main body 5a, pressing plate 5b
By holding, exhausting, and resupplying the air in accordance with the timing at which the scraping plate 4 moves to the position where it is pushed down, the scraping member body 5a and the pressing plate 5b The above function can be obtained by adjusting the rotational movement. In each of the above embodiments, a mixer for mixing and stirring an organic substance has been described. However, the present invention is not limited to this, and other applications in which adhesion of a raw material to a scraping surface is a problem. It is also applicable to:

[0027]

As described above, according to the present invention,
In the rotating cylinder, a scraping member that pushes against the scraping portion with the rotation of the rotating cylinder and removes the raw material attached to the scraping portion from the scraping portion is arranged, and further, the scraping member, With the rotation of the rotary cylinder when hitting the scraping part, it moves while following the scraping member to remove the adhered raw material, and then releases the pushing against the scraping part and returns the position before movement. With such a configuration, it is possible to automatically and inexpensively remove the deposits on the scraping surface continuously, and there is an effect of maintaining good scraping performance.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional side view of the same.

FIG. 3 is an enlarged perspective view of the scraping plate mounting portion.

FIG. 4 also shows a detailed process.

FIG. 5 shows a detailed process of another embodiment of the present invention.

FIG. 6 is a sectional side view showing a conventional rotary mixer having a scraped-up plate structure.

[Explanation of symbols]

 Reference Signs List 1 rotating cylinder 3 raw material 4 scraping plate 4a concave curved surface 5 scraping member 5a scraping member main body 5b pressing plate 6 pipe 7 pipe 10 coil spring 11 coil spring 15 air bag 16 air bag 17 air piping

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4G036 AA13 4G037 DA15 EA05 4H061 AA03 CC36 CC42 CC47 CC51 CC55 EE66 FF06 GG16 GG41 GG49 GG70

Claims (7)

[Claims] 1. A rotary mixing machine, wherein a rotatable portion protruding inward is provided on an inner wall of a rotary cylinder that accommodates and rotates a raw material, and the raw material is mixed by rotation of the rotary cylinder. A scraping member for pressing the scraping portion along with the rotation of the rotating cylinder and removing the raw material attached to the scraping portion from the scraping portion with the rotation of the rotating cylinder is disposed, and the scraping member is further provided. With the rotation of the rotary cylinder when pushing against the scraping section, the scraping member moves while following the scraping member to remove the adhered raw material. Rotary mixer characterized by being configured to perform 2. The rotary mixing device according to claim 1, wherein the scraping member is attached to a bridge member that is bridged between lids respectively disposed at both axial ends of the rotary cylinder. Machine 3. The scanning surface of the scraping portion is formed such that at least the pressing portion of the scraping member moves toward the center of the rotary cylinder when the rotary cylinder is rotated and pressed. The rotary mixer according to claim 1 or 2, 4. The scraping-up section has a plate shape attached substantially perpendicular to the inner wall of the rotary cylinder and along the axial direction of the rotary cylinder, and further in the rotation direction of the rotary cylinder. 4. The rotary type according to claim 3, wherein the plate surface is a scraping surface and a copying surface, and is inclined toward the center side of the rotary cylinder so as to be located further rearward in the rotation direction. Mixing machine 5. The scraping member according to claim 3, wherein the shaving member is rotatable by a rotating shaft along an axial direction of the rotating cylinder, and a distal end side of the shaving member is a pressing portion. 4. The rotary mixer according to 4. 6. The rotary mixer according to claim 5, wherein the scraping member has a biasing unit that resists the rotation caused by the pressing. 7. The scraping member is provided at a distal end of a shaving member body rotatable by the rotating shaft,
The pressing member has a structure in which the pressing member is rotatably connected by a rotating shaft extending along the axial direction of the rotary cylinder, and further includes biasing means for resisting rotation of the pressing member due to the pressing. Item 7. Rotary mixer according to item 5 or 6