JPH0753702Y2 - Mixer - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixer used in the fields of chemistry, medicine, food industry, etc., and in particular, a stirring blade is arranged at the bottom of the mixer and an inner side wall above the stirring blade is provided. The present invention relates to a mixer having a disintegrating blade arranged in the.

[0002]

2. Description of the Related Art Mixing machines for mixing powder and the like by rotating a crushing blade placed in a mixing tank at high speed are used for mixing, dispersing, granulation, spherical granulation, powder coating granulation, masking coating. Since it can perform various mixing treatments such as emulsification, paste, and kneading, it has been widely used in the fields of chemistry, medicine, food industry, etc. in recent years.

In these mixers, as illustrated in FIG. 4, a stirring blade 42 is provided at the upper end of a rotary shaft 43 which penetrates the central portion of the bottom wall 41a of the mixing tank 41 and projects into the mixing tank 41.
And a drive device 44 installed below the mixing tank 41.
Is configured to rotate the stirring blade 42 at a high speed via the rotating shaft 43 to perform the mixing process. Normally, the stirring blade 42 is disposed close to the bottom surface of the mixing tank 41 in terms of the mixing effect. Further, in order to accelerate the crushing and granulation, a crushing blade 45 which is rotationally driven by another driving device 46 is arranged on the inner wall portion located above the stirring blade 42 of the mixing tank 41.

In the above fields using these mixers, a single apparatus often mixes products of various types, and in this case, the inside of the mixing tank is cleaned after each type of mixing process is completed. By doing so, it is possible to prevent contamination between each variety. However, in these mixers, the stirring blades are arranged in the vicinity of the bottom surface of the mixing tank, so that between the stirring blades and the bottom surface of the mixing tank, the back surface of the stirring blades, or the shaft-sealing portion of the rotating shaft bottom wall penetrating portion. It is difficult to clean the above, and therefore, at the time of cleaning, a complicated and time-consuming procedure of disassembling the stirring blade, taking it out of the tank, and cleaning each of these parts is required.

Therefore, the inventors of the present invention can wash the inside of the mixing tank without disassembling the stirring blade and taking it out of the tank, shortening the time required and smoothly changing the processing type. Prior to the present application, a mixer capable of solving the above problem was proposed (Practical application No. 2-96968).

The mixer of this prior application, as shown in FIG.
The mixing tank 31 penetrates through the central portion of the bottom wall 31b of the mixing tank 31.
The stirring blade 32 is attached to the upper end portion of the rotating shaft 33 which is projected inward, and the lower end portion of the rotating shaft 33 is slidable in the vertical direction by a drive device 34 arranged below the mixing tank 31. While being connected, the driving device 34 of the rotating shaft 33 and the mixing tank 3
1 is connected to a shaft elevating device 35 disposed below the mixing tank 31, and the side wall portion located above the stirring blade 32 in the mixing tank 31 is A crushing blade 36 that is rotationally driven by another drive device 37 is arranged.

In the mixer of this prior application, when cleaning the inside of the mixing tank 31, the rotating shaft 33 is raised by the shaft elevating device 35 so that the gap between the stirring blade 32 mounted on the upper end of the rotating shaft 33 and the bottom surface of the mixing tank 31 is increased. Since the upper lid 31a of the mixing tank 31 can be opened and the interval from the upper portion to the cleaning can be increased, the stirring blade 32
The inside of the tank can be cleaned without disassembling it and taking it out of the tank, and the required time can be shortened to smoothly change the processed product.

[0008]

However, in the mixer of the above-mentioned prior application, the shaft elevating device is operated safely and surely,
It was found that there are still some points to be improved in order to further shorten the time required for cleaning the inside of the tank and achieve higher operation efficiency and productivity. That is, since the crushing blade is arranged on the side wall portion located above the stirring blade of the mixing tank, one of the blades of the stirring blade may be located immediately below the crushing blade when cleaning the inside of the tank. When the temperature is raised as it is, there is a fear that the stirring blade and the crushing blade collide with each other and damage each other. For this reason, before raising the stirring blade, it is necessary to confirm the stop position of each blade of the stirring blade, and to change or adjust the position manually by inching the driving device or from above the tank. This is one of the obstacles to further shortening the cleaning time.

The present invention has been made in order to solve the above-mentioned problems, and makes it possible to raise and lower the rotating shaft more safely and reliably, and to efficiently perform the cleaning of the inside of the mixing tank and the required time. It is an object of the present invention to provide a mixer which can achieve a shorter and smoother change of processed product types, and thus can further improve its operation efficiency and productivity.

[0010]

In order to achieve the above object, the present invention has the following configuration. That is, the mixer according to the present invention includes a mixing tank, a rotating shaft that penetrates through the central portion of the bottom wall of the mixing tank, and has an upper end protruding into the mixing tank, and the rotating shaft arranged in the vertical direction. A stirrer having a plurality of blades mounted on the upper end and arranged in the vicinity of the bottom surface of the mixing tank, and a drive device arranged below the mixing tank and having an output unit connected to the lower end of the rotating shaft. And a crushing blade arranged on a side wall portion above the stirring blade of the mixing tank, the rotating shaft has a lower end portion axially slidably coupled to the output portion of the drive device. At the same time, the intermediate portion between the drive device and the mixing tank is rotatably connected to the shaft elevating means arranged below the mixing tank, while on the outer periphery of the rotating shaft located above the shaft elevating means, The wedge-shaped wing blade positioning claws whose upper ends are sharpened from both sides are attached in the vertical direction, and A shaft rotation guide having a wedge-shaped guide claw whose lower end is sharpened from both side surfaces is provided on the side of the rotary shaft located immediately above the positioning claw, with the guide claw spaced at a predetermined interval on the rotary shaft. The blade positioning claws are fixedly arranged parallel to the vertical direction, and the blade positioning claws are attached to a plurality of circumferential positions on the outer circumference of the rotating shaft corresponding to the circumferential positions of the blades of the stirring blade. The shaft rotation guide is fixedly arranged with its guide claw positioned laterally of the rotary shaft corresponding to the disposition position of the crushing blade.

Also, the above-mentioned one blade wing positioning claw is attached to one circumferential direction position on the outer circumference of the rotary shaft corresponding to the circumferential direction position of any one of the stirring blades at the upper end, The rotation guide has the same number of guide claws as the blades of the stirring blade.
The rotating shaft inner claw in the circumferential direction at equal pitch in co <br/> and makes囲撓, the intermediate beams by positioning the side of the rotary shaft corresponding to the arrangement position of the one of the guide clicks the crushing blade Fixed placement
Good.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the mixer according to the present invention will be described below with reference to the drawings.

1A and 1B are views showing a mixer according to an embodiment of the present invention, wherein FIG. 1A is a partially longitudinal front view, and FIG. 1B is a partial sectional view taken along the line AA of FIG. The figure, (c) figure is a BB arrow partial view of a (b) figure, and (d) figure is a CC sectional view of a (b) figure.

In FIG. 1, reference numeral 1 denotes a mixing tank, which is formed in a cylindrical container and contains a main motor 13 and a speed reducer 12 directly connected to the main motor 13. An upper lid 1a which is arranged on the upper side and which can be opened and closed is provided on the upper portion thereof, and an openable and closable dump lid 1b is provided on the lower portion of the peripheral wall. Further, the upper lid 1a is provided with a raw material inlet, an inspection port, and the like.

Reference numeral 2 denotes a stirring blade. The stirring blade 2 has three blades arranged at equal pitches in the circumferential direction, and is provided so as to penetrate the central portion of the bottom wall of the mixing tank 1. It is attached to the upper end of the rotating shaft 3 and is arranged close to the inner bottom surface of the mixing tank 1.

Here, the rotary shaft 3 has its intermediate portion at the machine base 1
Inner sleeve 5 of the bearing box 5 attached to the intermediate beam 10a
The lower end 3a is connected to the output shaft of the speed reducer 12 directly connected to the main motor 13 via a connecting flange 11, and is rotationally driven by the main motor 13
In addition, the bearing box 5 is pivotally supported and rotates without runout. In addition, the rotating shaft 3 has an inner sleeve 5 a of the bearing box 5.
Is slidably inserted in the axial direction, and its lower end 3
a is connected to the connection flange 11 by a spline configuration,
It is supposed to be movable in the axial direction.

The tank bottom wall penetrating portion of the rotary shaft 3 is axially slidably sealed by a shaft sealing box 4 provided in the penetrating portion of the mixing tank 1 bottom wall. On the other hand, inside the shaft sealing box 4,
It is communicated with a compressed air supply means (not shown here) through the ventilation hole 4a, and in the mixing operation, the inside of the shaft sealing box 4 is air-purged to ensure the shaft sealing of the rotating shaft 3. Has been done.

The rotary box 3 is rotatably held by the shaft elevating arm 8 via a bearing 8a at an intermediate portion between the bearing box 5 and the connecting flange 11.

On the other hand, one end of the shaft elevating arm 8 is rotatably and laterally movably connected to a lower end of a support member 10b suspended from an intermediate beam 10a of a machine base 10, and the other end is connected. The cylinder 9 is rotatably connected to the piston end of a cylinder 9 which is erected on the bottom of the machine base 10 so as to be swingable. It is rotatably connected to the bearing 8a via a shaft, and is rotated about the connection point with the support member 10b by the operation of the cylinder 9 to raise the rotary shaft 3 via the bearing 8a. ing.

Reference numeral 15 denotes a motor with a speed reducer. The motor with a speed reducer 15 is arranged on a machine stand 10 located on the side of the mixing tank 1, and its output shaft penetrates a side wall of the mixing tank 1. It is projected into the mixing tank 1.

Reference numeral 14 denotes a crushing blade, and this crushing blade 14
Is attached to the output shaft end of the speed reducer motor 15, is disposed on the side wall portion located above the stirring blade 2 in the mixing tank 1, and is rotationally driven by the speed reducer motor 15.
It is supposed to promote the crushing of lumps and agglomerated powder generated during mixing.

On the other hand, 7 is a blade positioning tool, and this blade positioning tool 7 has a game piece shape in which the upper end is sharpened from both sides as shown in FIGS. While arranging three blade positioning claws 7a at equal pitches in the circumferential direction,
The insides of the bases of these blade positioning claws 7a are connected and integrated by a mounting ring 7b that fits on the rotary shaft 3, and the rotary shaft 3 is located immediately above the bearing 8a of the shaft lifting arm 8. It is attached to the outer circumference of the via a set screw 7c. In addition, the blade positioning tool 7 directs each blade positioning claw 7a in a vertical direction parallel to the axis of the rotary shaft 3 and determines the circumferential position of each blade positioning claw 7a.
The stirring blade 2 attached to the rotary shaft 3 is attached to the rotary shaft 3 so as to match the circumferential position of each blade of the stirring blade 2.

Reference numeral 6 denotes a shaft rotation guide tool. The shaft rotation guide tool 6 has an inner diameter larger than the outermost diameter of the blade positioning tool 7, as shown in FIGS. And a guide claw 6a which is formed in the shape of a game piece whose lower end is sharpened from both sides, and whose outer side is connected to the mounting ring 6b and is located on the inner diameter side. The guide claw 6a is located immediately above the blade positioning tool 7 of the rotary shaft 3, and is arranged parallel to the rotary shaft 3 at a predetermined interval in the vertical direction and its mounting ring. It is attached to the lower surface of the intermediate beam 10a around the bearing box 5 via 6b. Further, the shaft rotation guide tool 6 is attached / fixed to the intermediate beam 10a with its guide claw 6a positioned on the side of the rotary shaft 3 corresponding to the disposition position of the crushing blades 14.

Here, the shaft rotation guide tool 6 and the blade positioning tool 7
Means a vertical positional relationship in which a constant space can be maintained between the lower ends of the guide claws 6a and the upper ends of the blade positioning claws 7a during the mixed operation in which the shaft lifting arm 8 is rotated to the lower limit position. Further, the vertical dimension of the guide claw 6a of the shaft rotation guide tool 6 is larger than the lifting stroke of the rotary shaft 3 by the shaft lifting arm 8.

In the mixer of the present embodiment having the above-mentioned structure, when cleaning the inside of the mixing tank, the cylinder 9 is operated to raise the rotating shaft 3 so that the stirring blade 2 mounted on the upper end of
(A) The stirring blade 2 is disassembled because it is possible to increase the distance from the reference position shown by the solid line in the figure to the upper position shown by the alternate long and short dash line in the figure to increase the distance between the bottom surface of the mixing tank 1 and the bottom. It is possible to easily clean the inside of the mixing tank 1 without taking the complicated procedure of taking it out of the tank.

When the rotary shaft 3 is raised for cleaning the inside of the mixing tank, even if any one of the blades of the stirring blade 2 is located directly below the crushing blade 14, it is positioned below this crushing blade 14. And the guide claws 6a of the shaft rotation guide 6 are present, and on the other hand, on the outer periphery of the rotary shaft 3 below each blade of the stirring blade 2, a blade positioning tool whose circumferential position is matched with these blades. Since the blade wing positioning claw 7a of No. 7 exists, the rotary shaft 3 is raised as it is, and one blade wing positioning claw 7a existing below the wing and the guide claw 6a below the crushing blade 14 collide with each other. In addition, the sliding shafts are slid between the upper end face and the lower end face which are sharpened and inclined from both sides, and the rotary shafts 3 are rotated in the directions avoiding each other by the component force in the lateral direction. The blade of the stirring blade 2 located immediately below the crushing blade 14 is automatically By animals and retraction, it can be increased to no predetermined height to cause collision therebetween. Therefore, when cleaning the inside of the mixing tank, it is not necessary to confirm the stop position of the blades of the stirring blade 2 or to change or adjust the position before raising the stirring blade 2, and thus the cleaning is performed. The required time can be further shortened.

Further, by setting the spline connection between the lower end portion 3a of the stirring blade 2 and the connecting flange 11 to an appropriate length, the rotating shaft 3 with the stirring blade 2 mounted is connected to the drive unit. Since it can be raised without releasing, it is possible to automatically return to the operation ready state after cleaning only by operating the cylinder 9, and before and after cleaning, the stirring blade is set in the narrow mixing tank 1. Compared with the conventional mixer that requires disassembling and reassembling No. 2, the cleaning time can be greatly shortened and the process type can be changed smoothly, improving its operating efficiency and productivity. be able to.

FIG. 2 is a view showing a main part of a mixer according to another embodiment of the present invention, and FIG. 2 (a) is a partially longitudinal front view of the main part,
(B) is a partial sectional view taken along the line AA of (a), (c) is a partial view taken along the line BB of (b), and (d) is a line C-C of (b). FIG.

This embodiment is different from the embodiment shown in FIG.
Wing position attached to the blade positioning device attached to the rotating shaft in
Number of setting claws and shaft rotation guide fixedly arranged above them
It is the same as the device of the embodiment shown in FIG. 1 except that the number of the guide claws attached to the device is exchanged . Here, only the main part of the device is shown. , Equivalent components are given the same reference numerals, their explanations are omitted, and the differences will be summarized.

In the mixer of this embodiment shown in FIG. 2, the rotary shaft 3 located immediately above the bearing 8a of the shaft lifting arm 8 is used.
As shown in FIGS. (B) and (d), one wing-blade positioning claw 17 having a shogi piece shape whose upper end is sharpened from both sides is attached to the outer periphery of the blade. In addition, the blade positioning claw 17 is provided at one circumferential position on the outer circumference of the rotary shaft 3 corresponding to the circumferential position of any one blade of the stirring blade 2 (not shown here) via a stop bolt 17a. It is attached like a key.

On the other hand, immediately above the blade positioning claw 17 of the rotary shaft 3, as shown in FIGS. (B) and (c), an attachment having an inner diameter larger than the rotation diameter of the outermost peripheral portion of the blade positioning tool 17 is mounted. A ring 16b and three guides that are formed in a shogi piece shape with the lower end pointed from both sides, and are connected to the mounting ring 16b on the outside of each base and are located at three positions at equal pitches in the circumferential direction. An axis rotation guide 16 having a claw 16a is arranged. In addition, this shaft rotation guide 16
The three guide claws 6a surround the rotary shaft 3 and the respective guide claws 6a are parallel to the rotary shaft 3 in the vertical direction at a predetermined interval.
Attach the intermediate beam 10a to the lower surface around the bearing box 5 via
It is fixed. Further, any one of the guide claws 16a of the shaft rotation guide tool 16 is located on the side of the rotary shaft 3 corresponding to the disposition position of the crushing blades 14, not shown here.

With the mixer of this embodiment having the above structure, the same effects as those of the embodiment shown in FIG. 1 can be obtained.

[0033]

As described above, in the mixer according to the present invention, the stirring blade mounted on the upper end of the rotary shaft can be safely and surely raised without colliding with the crushing blade arranged above the stirring blade. When cleaning the inside of the mixing tank, the stirring blade can be raised to easily increase the distance between the mixing tank and the bottom surface of the mixing tank, and the inside of the mixing tank can be easily cleaned without disassembling the stirring blade and taking it out of the tank. As compared with the conventional mixer, which requires disassembling and reassembling the stirring blades in a narrow mixing tank after each cleaning, the cleaning time can be greatly reduced and Changes can be made smoothly, and the operating efficiency and productivity can be significantly improved.

[Brief description of drawings]

FIG. 1 is a view showing a mixer according to an embodiment of the present invention,
(A) figure is a partially longitudinal front view, (b) figure is A- of (a) figure.
A partial sectional view taken along the arrow A, a view (c) is a partial view taken along the line BB of FIG. (B), and a view (d) is a partial view taken along the line CC of FIG.

2A and 2B are views showing a main part of a mixer according to another embodiment of the present invention, wherein FIG. 2A is a partially longitudinal front view of the main part, and FIG.
The figure is a partial cross-sectional view taken along the line AA of the figure (a), a part (c) of the figure is a partial view taken along the line BB of the figure (b), and a diagram (d) is the view C of the figure (b).
-C is a partial view seen from an arrow.

FIG. 3 is a partially longitudinal front view of the mixer of the prior application.

FIG. 4 is a partially longitudinal front view of a conventional mixer.

[Explanation of symbols]

 1 ... Mixing tank 2 ... Stirring blade 3 ... Rotating shaft 4 ... Shaft sealing box 5 ... Bearing box 6 ... Shaft rotation guide tool 6a ... Guide claw 7 ... Blade positioning tool 7a ... Wing blade positioning claw 8 ... Shaft lifting arm 8a ... Bearing 9 ... Cylinder 10 ... Machine stand 11 ... Connection flange 12 ... Reduction gear 13 ... Main motor 14 ... Crushing blade 15 ... Reduction gear motor

Claims (2)

[Scope of utility model registration request] 1. A mixing tank, a rotary shaft that penetrates through a central portion of a bottom wall of the mixing tank and has an upper end protruding into the mixing tank, and is arranged in a vertical direction, and is attached to an upper end of the rotating shaft. A mixing blade having a plurality of blades arranged in the vicinity of the bottom surface of the mixing tank, a drive device arranged below the mixing tank and having an output unit connected to the lower end of the rotating shaft, In a mixer comprising a crushing blade arranged on a side wall portion located above a stirring blade, a rotating shaft is connected to an output portion of a drive device such that a lower end portion of the rotating shaft is slidable in an axial direction, and the driving device is driven. An intermediate portion between the device and the mixing tank is rotatably connected to a shaft elevating means arranged below the mixing tank, while an upper end portion is formed on both sides of an outer periphery of a rotating shaft located above the shaft elevating means. A wedge-shaped blade positioning claw sharpened in the vertical direction is attached in the vertical direction and directly above the blade positioning claw. A shaft rotation guide having a wedge-shaped guide claw whose lower end is sharpened from both side directions is provided on the side of the rotary shaft located in the direction parallel to the vertical direction with the guide claw at a predetermined distance from the rotary shaft. Fixedly arranged along, and the blade positioning pawl is attached to each of a plurality of circumferential positions on the outer circumference of the rotating shaft corresponding to the circumferential position of each blade of the stirring blade,
The mixer according to claim 1, wherein the shaft rotation guide is fixedly arranged with its guide claw positioned to the side of the rotary shaft corresponding to the disposition position of the crushing blade. 2. A single blade positioning claw is attached to a circumferential position on the outer circumference of the rotary shaft corresponding to the circumferential position of any one of the stirring blades at the upper end, and the shaft is rotated. The guide is the above
It has the same number of guide claws as the blades of the stirring blade,
It is characterized in that the rotating shaft is bent and bent at the same pitch as the direction, and any one of the guide claws is positioned on the side of the rotating shaft corresponding to the disposing position of the crushing blade and fixedly arranged on the intermediate beam.
Mixer according to claim 1, wherein you with.