JP2001033162A - Container rotating type mixing dryer and breakage prevention mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breakage which can be relatively easily configured, has high versatility, and can effectively prevent co-rotation and breakage of a suction pipe and a piping member connected to the suction pipe. An object of the present invention is to provide a container rotary type mixing / drying machine having a prevention mechanism. A container (1) and a suction pipe (13) are provided,
In a container rotating type mixing / drying machine in which the container (1) is rotatable with the suction tube (13) fixed, the suction tube (13) is urged in a predetermined direction, and is urged in a direction opposite to the predetermined direction. A damage prevention mechanism is provided for stopping rotation of the container (1) before the displacement of the suction pipe (13) exceeds a predetermined displacement, and the damage prevention mechanism biases the suction pipe (13) in a predetermined direction. And a detecting means capable of detecting the displacement of the suction pipe (13).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary container type mixing / drying machine for mixing / drying various kinds of powders, especially powders of medicines, foods, electronic materials, etc. which are not liable to be mixed with impurities. is there.

[0002]

2. Description of the Related Art Heretofore, as a container rotary type mixing / drying machine, for example, one having a configuration as shown in FIGS. 4 and 5 is known. FIG. 4 shows a cross section of a main part of a container rotary type mixing / drying machine according to a conventional technique. FIG.
FIG. 5 is a schematic enlarged view of a reinforcing portion in FIG. 4. Hereinafter, a container rotating type mixing dryer according to the related art will be described with reference to FIGS. 4 and 5.

[0003] In the container rotating type mixing / drying machine shown in FIG.
The container 101 is configured to be rotatable in a state where the suction tube 102 is fixed and the suction tube 102 is fixed.

The suction tube 102 is provided for evacuating the inside of the container 101 during processing such as mixing and drying in a container rotating type mixing dryer. Therefore, a vacuum pump (not shown) or a piping member (not shown) connected to the vacuum pump is connected to the other end 102B of the suction pipe 102.

[0005] In the container rotating type mixing / drying machine configured as shown in FIG. 4, the powder is mixed and dried by rotating the container 101 while evacuating using the suction pipe 102. At this time, since a vacuum pump or the like is connected to the suction tube 102 as described above,
The suction tube 102 must not rotate together with 01.

[0006] The suction tube 102 constituting the container rotating type mixing dryer shown in FIG. 4 is designed to have a strength enough to withstand a load of about the size of a powder or the like that is being rotated in the container 101. Therefore, in a normal use state, the suction tube 102 does not rotate together with the rotation of the container 101.

However, if the solidification of the powder and granules due to an accident or the solidification of the powder and granules due to the occurrence of an improper vacuum break occurs in the container 101, A load higher than the design strength may be applied to the suction tube 102 based on the state of the object. Here, the vacuum break is an operation of returning the inside of the container 101 from a reduced pressure state to an atmospheric pressure state. In the case of a vacuum break in a normal processing step (for example, a vacuum break after stopping the rotation of the container 101), the above-described load is not applied to the suction tube 102. However, if an improper vacuum break (for example, a vacuum break during rotation of the container 101 or a vacuum break that returns from a reduced pressure state to an atmospheric pressure state in a short time) occurs in the container 101 for some reason, powder The granules may be pressed by the gas, and the granules may be in a tightly closed state. That is, as described above, if the rotation of the container 101 is continued in a state in which the granular material is tightly tightened for some reason, the granular material does not flow, but collides with the suction pipe 102 while being pressed against the wall surface. I do. Therefore, there is a possibility that the suction tube 102 and the piping members connected thereto rotate together, and the suction tube 102 and the like are damaged.

[0008] To prevent such a rotation of the suction tube 102, a reinforcing portion formed by using a shear pin 201 or the like is provided.

FIG. 5 is a schematic enlarged view of the reinforcing portion. FIG. 5A is an enlarged view of an X portion showing the reinforcing portion in FIG. 4, and FIG. 5B is a view as viewed in the direction of the arrow Y in FIG. 5A.

In FIG. 5, the reinforcing portion is a first hub 202 fixed to a flange portion provided on the suction pipe 102.
And a second hub 203 fixed to a mounting table 103 on which the container 101 and the like are provided.

In the prior art, as shown in FIGS. 4 and 5, in order to prevent the suction tube 102 from rotating together, a reinforcing portion made of a shear pin 201 or the like is provided. Then, the strength of the shear pin 201 constituting the reinforcing portion is set to be equal to or less than the design strength of the suction pipe 102, and before the suction pipe 102 is damaged, deformation or breakage of the shear pin 201 is detected. It is configured to prevent breakage.

[0012]

However, the container rotating type mixing dryer according to the above prior art has the following problems.

As described above, in order to prevent damage to the suction tube 102 in advance, it is necessary to set the strength of the shear pin 201 to be equal to or less than the strength of the suction tube 102. But,
This setting needs to be performed based on various parameters such as the material forming the shear pin 201 and the length and thickness of the shear pin 201, and cannot be easily performed. For this reason, in the related art, there is a problem that it is difficult to design the strength of the reinforcing portion.

Further, it is difficult to cope with a design change or the like after a certain value is set for the shear pin 201 constituting the reinforcing portion according to the prior art, and after it is manufactured to the value. That is, in the prior art, in order to cope with a design change or the like, it is necessary to re-create the shear pin 201 itself, and there is a problem that versatility is lacking.

Further, in the prior art, if the deformation and breakage of the shear pin 201 can be dealt with immediately (instantly), the breakage of the suction tube 102 can be prevented. However, if this is not the case, there is a problem that the suction tube 102 and the pipes connected thereto may be damaged after the breakage of the shear pin 201.

Accordingly, the present invention has been made to solve the problems of the above-described conventional container rotary type mixing / drying machine, is relatively easy to configure, has high versatility, and has high suction efficiency. An object of the present invention is to provide a container rotary type mixing / drying machine provided with a breakage prevention mechanism capable of effectively preventing co-rotation and breakage of a pipe member connected to a pipe and a suction pipe.

[0017]

That is, the present invention for solving the above problems comprises a container 1, a suction tube 13 having one end inserted into the container 1, and fixing the suction tube 13. In the container rotating type mixing dryer in which the container 1 is rotatable in a state where the suction tube 13 is rotated, the suction tube 13 is biased in a predetermined direction,
A breakage prevention mechanism is provided, which can stop the rotation of the container 1 before the displacement of the suction tube 13 against the bias exceeds a predetermined displacement. Here, "predetermined displacement"
"Displacement" means a displacement that does not cause damage or the like to the suction pipe 13 and a piping member connected thereto.

According to the container rotary mixing / drying machine of the present invention, even when a load greater than that during normal operation is applied to the suction pipe 13, the amount of movement of the suction pipe 13 and the like is reduced. Before the predetermined displacement is exceeded against the bias, the rotation of the container 1 can be stopped before the breakage prevention mechanism is provided. Damage can be effectively prevented. Here, the direction against the bias (the direction in which the suction tube 13 is displaced) may be opposite to the predetermined direction, or may have a predetermined angle with respect to the bias direction. Direction.

Further, in the container rotary type mixing / drying machine according to the present invention, the breakage prevention mechanism detects the biasing means 20 for biasing the suction pipe 13 in a predetermined direction, and detects the displacement of the suction pipe 13. It is preferable that the detecting means 30 is used. Further, in this configuration, the detecting unit 30 may be configured to be able to detect the displacement of the suction tube 13 based on the displacement of the urging unit 20.

Further, in the container rotating type mixing and drying machine according to the present invention, the position reference plate 1 fixed to the suction pipe 13 is provided.
6 and a detent plate 17 fixed to the mounting table 7 on which the container 1 and the like are provided. The urging means 20 is moved so that the position reference plate 16 and the detent plate 17 come into contact with each other. Preferably, the position reference plate 16 is biased in the predetermined direction.

According to this preferred configuration, the suction tube 13 can be urged in the predetermined direction based on a simple configuration.

Further, in the container rotary type mixing and drying machine according to the present invention, when the position reference plate 16 is urged in the predetermined direction, the urging force of the urging means 20 causes the displacement of the suction pipe 13. Is preferably set smaller than a load that can exceed a predetermined displacement.

According to this preferred configuration, the suction tube 1
3, when the suction tube 13 is displaced against the urging force of the urging means 20, the displacement does not exceed the predetermined displacement.
Because the rotation of the container 1 is stopped based on the displacement of the suction tube 13, the damage of the suction tube 13 and the like can be effectively prevented. In addition, by stopping the rotation of the container 1, the co-rotation of the suction tube 13 and the like can be effectively prevented.

In the container rotating type mixing / drying machine according to the present invention, the detecting means 30 is constituted by using a limit switch fixed to a mount 7 provided with the container 1 and the like. When the position reference plate 16 fixed to the suction tube 13 and the limit switch are in contact with each other in a predetermined positional relationship by the urging means 20, the rotation of the container 1 is maintained, and the position reference plate 16 Is preferable to be able to stop the rotation of the container 1 when it is separated from the limit switch.

According to this preferred configuration, the container having the detecting means 30 capable of detecting the displacement of the suction tube 13 based on a simple configuration and easily stopping the rotation of the container 1 based on the detection signal. A rotary mixing dryer can be obtained.

Further, in the container rotary type mixing and drying machine according to the present invention, it is preferable that the urging means 20 is constituted by using a spring 23.

According to this preferred configuration, by adjusting the length of the spring 23 and replacing the spring (replacement with a spring having a different wire diameter or the like), the strength of the suction tube 13 or the like can be adjusted. It is possible to easily set the biasing force. Therefore, according to this preferred configuration, even if a design change occurs in the suction tube 13 or the like, the design change is easy, and a versatile damage prevention mechanism can be obtained.

In the container rotating type mixing / drying machine according to the present invention, it is preferable that the predetermined direction is opposite to the rotation direction of the container 1.

According to this preferred configuration, the suction tube 13 is urged in a direction opposite to the rotation direction of the container 1, and when the suction tube 13 is displaced so as to resist this urging force,
The detection means 30 is configured to be able to detect the displacement. Therefore, it is possible to reliably detect the co-rotation in the same direction as the rotation direction of the container 1 that is most likely to occur, and to stop the container 1 based on the detection signal. Therefore, co-rotation and breakage of the suction tube 13 and the like can be effectively prevented.

Further, if necessary, the suction tube 13 can be urged in both the predetermined direction and the opposite direction to detect the displacement of the suction tube 13 when the suction tube 13 is displaced against each other. It is good also as a structure which provides a simple detection means.

The above-described container rotary type mixing / drying machine according to the present invention is an apparatus capable of performing at least one of a mixing process and a drying process on powders and the like (objects) in a container. is there.

Further, the damage prevention mechanism constituting the above-described container rotary type mixing dryer according to the present invention is not limited to the use of only the container rotary type mixing dryer.
Any device having a rotatable first component and a second component partially inserted into the first component is configured to prevent damage to the second component. , Can also be used. That is, a first component and a second component having one end inserted into the first component, and the first component is rotatable with the second component fixed. A damage prevention mechanism provided in an apparatus, wherein the second component is biased in a predetermined direction, and the displacement of the second component against the bias exceeds a predetermined displacement. The damage prevention mechanism may be characterized by stopping rotation of the first component. The first component corresponds to the container 1 described above, and the second component corresponds to the suction tube 13 described above. Therefore, as a specific configuration of the damage prevention mechanism, the various configurations described above for the container 1 and the suction pipe 13 can be applied.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a container rotary type mixing dryer according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view of a rotary mixing and drying machine according to an embodiment of the present invention. Here, the container rotating type mixing / drying machine according to the present embodiment includes a container 1
This is an apparatus capable of performing at least one of a mixing process and a drying process on an object to be contained (eg, a granular material).

According to the container rotating type mixing and drying machine shown in FIG. 1, the upper end of the double cone type container 1 has an input port 3 provided with a lid 2 which can be opened and closed. Has a discharge port 4 provided with a butterfly valve (not shown) and the like.

In the center of each side of the container 1, a shaft 5
Are protruded horizontally. Mounting bases 7 are provided upright on the left and right sides of the base 6, and the shaft body 5 is rotatably supported by a bearing base 8 fixed to the upper end of the mounting base 7.

The motor 9 for rotating the container 1 is provided with a sprocket 10, and the power from the motor 9 is used to drive one shaft 5 provided with the sprocket 10, the chain 11, and the sprocket 12. Via container 1
, Whereby the container 1 is rotationally driven.

The suction tube 13 is inserted through the other shaft 5, one end of which is inserted into the container 1, and a filter 14 is attached to one end of the suction tube 13. The filter 14 is formed using a stainless steel wire mesh or the like, and prevents the powder or the like in the container 1 from entering the vacuum side (in the suction pipe 13). The other end of the suction pipe 13 is provided with a flange 15 for connecting a vacuum pump (not shown) or a piping member (not shown) to which the vacuum pump is connected.

Further, in the container rotating type mixing and drying machine according to the present embodiment shown in FIG. 1, a breakage prevention mechanism capable of effectively preventing the corotation and breakage of the suction pipe 13 and the like is provided outside the container 1. At a predetermined location. The break prevention mechanism is provided at the portion A in FIG.

FIG. 2 is an enlarged view of a portion A in FIG. FIG. 3 shows an arrow view from the direction of arrow B in FIG.

2 and 3, the breakage preventing mechanism is provided with a biasing means 20 provided to bias the suction tube 13 in a direction opposite to the rotation direction of the container 1 (the direction of arrow C in FIG. 3).
Detecting means 30 capable of detecting the displacement of the suction tube 13
, A position reference plate 16 fixed to the suction tube 13, a detent plate 17 fixed to the mounting base 7, and the like.

Here, the urging means 20 is provided with the rotation preventing plate 17.
Bolts 21 provided in the through holes of the first embodiment, and spacers 2 provided so as to be inserted into the bolts 21 and to contact the detent plate 17.
2, a spring 23 provided to be inserted into the bolt 21 to be in contact with the spacer 22, and a head portion 2 of the bolt 21.
From the side of 1a, the detent plate 17, the spacer 22, and the spring 23 are positioned in the order of the end of the spring 23 (the end that is not in contact with the spacer 22) while being inserted through the shaft 21b of the bolt 21 in this order. It is configured using a nut 24 and the like which are attached while being mounted.

The detecting means 30 is formed using a limit switch. Here, the limit switch refers to a limit switch, which is a switch whose contacts are switched when the operation reaches a certain limit position. Specifically, a contact mechanism and a pin or lever mechanism for operating the contact mechanism are combined. In the present embodiment, the detecting means 30 composed of a limit switch is a contact mechanism (not shown).
And a detection unit 31 including a pin or the like for operating the contact mechanism. The detection means 30 is fixed to the mounting plate 7 as described above, and the detection unit 31 constituting the detection means 30 is movable in the direction of arrow D in accordance with the movement of the position reference plate 16. Then, inside the detecting means 30, the contacts of the contact mechanism are switched based on the movement of the detecting unit 31. In addition, this contact is configured to be switchable between a first contact and a second contact. In the case of the first contact, the rotational drive of the container 1 is continuously maintained (ie, In the case of the second contact, the rotation of the container 1 is stopped (that is, the energized state is cut off).

Further, a notch 16a is formed in the position reference plate 16. The notch 16a has a predetermined adjustment width L. The position reference plate 16 has an engaging portion 16 b that can be engaged with the outer peripheral portion of the spacer 22.
Is provided.

The damage prevention mechanism according to the present embodiment is configured by combining the above-described components. Specifically, the rotation preventing plate 17 is arranged in the notch 16a of the position reference plate 16, and the urging means 20 provided on the rotation preventing plate 17 is provided.
To urge the suction tube 13 through the engaging portion 16b and the position reference plate 16 in the direction opposite to the rotational direction of the container 1 (the direction of arrow C shown in FIG. 3), and according to the strength of the suction tube 13. By setting the positional relationship (set width S) between the position reference plate 16 and the detent plate 17 within the adjustment width L, the urging force is smaller than the set value derived based on the strength of breakage of the suction pipe 13. In the state where the detection unit 31 is in contact with the position reference plate 16 adjusted to the predetermined set width S, the detection unit 30
The detecting means 3 is located at a position where the contact in the inside is connected to the first contact.
0 is provided.

The damage prevention mechanism according to the present embodiment is configured as described above, and adjusts the length of the spring 23 in accordance with the tightened state of the nut 24, and adjusts the length of the spring 23 in a predetermined direction (arrow C shown in FIG. 3). (In the opposite direction), the urging force is set smaller than the strength that the suction pipe 13 can withstand when a load is applied to the suction pipe 13 in the rotation direction of the container 1. In other words, the urging force is the suction tube 1
3 is set to be smaller than the load that can cause the displacement of the container 1 in the rotation direction to exceed a predetermined displacement. Here, the “predetermined displacement” is a displacement that does not cause breakage or the like of the suction tube 13 or the like. In the following, a load that causes a “predetermined displacement” is referred to as a “predetermined load”.

The container rotating type mixing and drying machine according to the present embodiment is configured as described above, and each component operates as follows.

First, in the container rotary type mixing / drying machine according to the present embodiment, powders and the like to be processed (mixed, dried, etc.) are charged into the container 1 through the charging port 3. here,
Examples of the powders and the like include drug substances or intermediates in fields such as the chemical and pharmaceutical industries.

Next, after the powder or the like is charged into the container 1, the motor 9 is started while the gas is sucked by the suction pipe 13 to make the inside of the container 1 vacuum, and the sprocket 10,
The container 1 is rotationally driven via the chain 11, the sprocket 12, the shaft 5 and the like. In the container rotating type mixing / drying machine according to the present embodiment, the inside of the container 1 is performed by the step of vacuuming the inside of the container 1 and the step of driving the container 1 to rotate (hereinafter, also referred to as “rotation step”). Is appropriately processed (mixed, dried, etc.).

When a load (predetermined load) exceeding the normal operation state is applied to the suction pipe 13 during the rotation process due to some cause (for example, an improper vacuum break, etc.). The breakage prevention mechanism is activated to stop the rotation of the container 1 and effectively prevent the suction pipe 13 and the pipes connected thereto from being damaged.

That is, in the present embodiment, when a predetermined load acts on the suction pipe 13, the urging means 2
Since the position reference plate 16 moves against the urging force of 0, and the detection unit 31 operates accordingly, the contact mechanism in the detection means 30 switches from the first contact to the second contact. And the rotation of the container 1 stops.

In this embodiment, the detecting means 3
Even after the contact mechanism in 0 switches from the first contact to the second contact, the container 1 tends to rotate due to inertial force, especially in a configuration in which no brake or the like is added.
The pipe connected to the flange portion 15 provided at the end of the suction pipe 13 is flexible or has a flexible configuration such that the position reference plate 16 hits the detent plate 17 within the range of these movement amounts. Is configured.

As described above, the container rotating type mixing dryer according to the present embodiment has the damage prevention mechanism, so that the following effects can be obtained.

According to this embodiment, since the urging force of the urging means 20 is set to a predetermined load or less, the suction pipe 1
The detection means 30 before the load on 3 becomes more than the design strength.
Operates, and the rotation of the container 1 can be stopped.
Therefore, according to the container rotating type mixing dryer according to the present embodiment, unlike the reinforcing portion according to the related art, the container 1 is automatically removed by the damage prevention mechanism before the load on the suction pipe 13 reaches the design strength. Since the suction pipe 13 can be stopped, it is possible to effectively prevent the suction pipe 13 and the surrounding piping members from rotating and breaking.

According to the present embodiment, the spacer 22
By adjusting the length in the longitudinal direction or the tightening state of the nut 24, it is possible to easily set the urging force according to the strength of the suction tube 13. In other words, it is possible to easily set the biasing force by adjusting the length of the spring 23. Therefore, the strength can be set more easily as compared with the reinforcement according to the related art. Furthermore, even if the adjustment cannot be made by adjusting the spring, a wide range of strength setting can be easily changed by replacing the spring with a wire having a different diameter or length. Therefore, according to the present embodiment, it is possible to obtain a breakage prevention mechanism that can easily cope with a change in design of the suction tube 13 or the like. Therefore, according to the present embodiment, it is possible to obtain a container rotating type mixing / drying machine which is easy to change in design and has a versatile damage prevention mechanism.

Further, in the present embodiment, the detecting means 30 is operated to stop the rotation of the container 1, the load on the suction pipe 13 is released, and the detecting section 31 is moved from the second contact to the first contact. Even if it returns to the position where it switches to, the container 1 is configured not to immediately start rotating. That is, after the limit switch serving as the detection means 30 is operated, unless the reset switch (not shown) provided in the control unit (not shown) of the container rotary mixing and drying machine is operated, the rotation of the container 1 is not driven. Will not start. Therefore, according to the present embodiment, the container 1
Since the reset switch is always required for re-driving, the worker or the like confirms the cause of the load applied to the suction pipe 13 at a predetermined level or more, and then performs the next processing (cause location). Repair or rotation of the container 1). Therefore, according to the present embodiment, a container rotating type mixing / drying machine having higher safety can be provided.

In this embodiment, the urging means 2
Although the description has been given of the case where the coil 0 is configured using the coil-shaped spring 23, the present invention is not limited to this configuration, and can be set to a predetermined strength (biasing force) and the biasing means thereof Displacement (displacement in the rotation direction of the suction tube)
Any configuration may be used as long as it is easy to detect. For example, leaf springs may be overlapped and used instead of a coiled spring. In this case, it is possible to easily change the setting of the biasing force over a wide range by increasing or decreasing the number of leaf springs. Further, as another configuration, the urging means may be configured using a cylinder or the like in which gas or liquid is sealed.

In this embodiment, the detecting means 3
Although the case where the limit switch is used as 0 has been described, the present invention is not limited to this configuration.
Any configuration is possible as long as it can detect the displacement of the suction tube 13 in the rotation direction, and can transmit a detection signal to the control unit in order to control the rotation drive of the container based on the detection signal. It may be a configuration. Therefore, for example, the displacement of the suction tube 13 is detected in a non-contact state by using a photoelectric sensor or the like, and the driving / driving of the container 1 is performed based on the detection signal.
The detection unit 30 may be configured to control the stop.

In this embodiment, the urging means 2
0 and the suction tube 13 in a direction opposite to the rotation direction of the container 1.
Has been described, and the detection means 30 operates when the suction tube 13 is displaced against the urging force. That is, the case has been described in which the detection means 30 is operated only when the suction tube is displaced in one direction (the rotation direction of the container 1), and the rotation of the container 1 can be stopped. Not something. Therefore, the urging means is provided so as to urge the suction tube 13 in both directions, and when the suction tube 13 exceeds a predetermined displacement in either direction, the detecting means is configured to detect the displacement. May be provided. With such a configuration, the suction tube 1 can be moved in either the rotation direction or the anti-rotation direction of the container 1.
When 3 exceeds a predetermined displacement, it is possible to obtain a container rotating type mixing dryer capable of stopping rotation of the container 1.

In this embodiment, the case where the container 1 is of a double cone type has been described, but the shape of the container 1 according to the present invention is not limited to this.
Therefore, for example, the container 1 may be spherical, rectangular parallelepiped, cylindrical, V-shaped, or the like.

[0061]

As described above, in the present invention,
Container rotation type mixing that is relatively easily configurable, has high versatility, and is provided with a damage prevention mechanism that can effectively prevent co-rotation and breakage of the suction pipe and piping members connected to the suction pipe. You can get a dryer.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a container rotating type mixing dryer according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of the container rotating type mixing and drying machine shown in FIG.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a cross-sectional view of a main part of a container rotating type mixing / drying machine according to the related art.

FIG. 5 is a schematic enlarged view of a reinforcing portion constituting the container rotary mixing / drying machine shown in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Lid, 3 ... Input port, 4 ... Discharge port, 5 ... Shaft, 6 ... Base, 7 ... Mounting stand, 8 ... Bearing stand, 9 ...
Motors, 10, 12 ... sprockets, 11 ... chains,
13: suction tube, 14: filter, 15: flange, 1
6 position reference plate, 16a notch, 16b engaging part, 17 detent plate, 20 urging means, 21 bolt, 21a head part, 21b shaft part, 22 spacer, 23 ... Spring, 24 nut, 30 detection means, 31 detection part

Claims (8)

[Claims] 1. A container (1), and a suction tube (13) having one end inserted into the container (1).
In a rotating container type mixing / drying machine in which the container (1) is rotatable with 3) fixed, the suction tube (13) is urged in a predetermined direction, and the suction tube (13) resists the urging. )
A container rotation type mixing / drying machine provided with a damage prevention mechanism capable of stopping the rotation of the container (1) before the displacement of the container exceeds a predetermined displacement. 2. The method according to claim 1, wherein the breakage prevention mechanism includes the suction pipe (1).
2. The container rotating type according to claim 1, further comprising: an urging means for urging the suction pipe in a predetermined direction; and a detection means capable of detecting a displacement of the suction pipe. Mixing dryer. 3. A position reference plate (16) fixed to the suction pipe (13) and a detent plate (17) fixed to a mounting table (7) provided with the container (1) and the like. Have
The position reference plate (16) is urged in the predetermined direction using the urging means (20) so that the position reference plate (16) and the detent plate (17) come into contact with each other. Item 2
2. The container rotary type mixing and drying machine according to item 1. 4. A load in which the urging force of the urging means (20) when the position reference plate (16) is urged in the predetermined direction can cause the displacement of the suction pipe (13) to exceed a predetermined displacement. The container rotary type mixing / drying machine according to claim 3, wherein the mixing / drying machine is set to be smaller than the container. 5. The detecting means (30) is constituted by using a limit switch fixed to a mounting table (7) provided with the container (1) and the like, and is provided by the urging means (20). When the position reference plate (16) fixed to the suction pipe (13) is in contact with the limit switch in a predetermined positional relationship, the rotation of the container (1) is maintained, and the position reference plate is maintained. The container rotary type mixing and drying machine according to any one of claims 2 to 4, wherein when the (16) is separated from the limit switch, the rotation of the container (1) can be stopped. 6. The spring (2) wherein said urging means (20) is a spring (2).
The container rotating type mixing / drying machine according to any one of claims 2 to 5, wherein the mixing / drying machine is configured using (3). 7. The container rotary mixing and drying machine according to claim 1, wherein the predetermined direction is a direction opposite to a rotation direction of the container (1). 8. A first component having a first component and a second component having one end inserted into the first component, wherein the first component is fixed with the second component fixed. Is a breakage prevention mechanism provided in a rotatable device, which biases the second component in a predetermined direction, and the displacement of the second component against the bias exceeds a predetermined displacement A damage prevention mechanism, wherein the rotation of the first component is stopped beforehand.