JP4740495B2 - Conical mixing dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conical mixer / dryer, and more particularly, to an apparatus that can circulate smoothly in a processing tank without increasing the rotational speed of a stirring blade even when the amount of processed material is small. Is.
[0002]
BACKGROUND OF THE INVENTION
Conventionally, a conical mixer / dryer D ′ has been used as an apparatus for mixing, crushing, or drying various foods, feeds, pharmaceuticals, chemicals, and the like. As shown in FIG. 6, this is provided with a rotating blade 5 'in an inverted conical processing tank 1', and the rotating blade 5 'allows a circulating flow of the processed material W to flow through the entire processing tank 1'. It is made to raise and the performance of mixing, crushing, and drying of the processed material W is improved. More specifically, the rotary blade 5 'is obtained by attaching a spiral ribbon blade 52' with a support bar 51 'to a rotary shaft 50' raised at the center of the treatment tank 1 '. The ribbon blade 52 'is positioned in the state of being close to the inner wall surface of the processing tank 1'. Then, when the processing object W is introduced into the processing tank 1 ′ from the upper charging port while rotating the rotary blade 5 ′, the entire processing object W is guided to the spiral ribbon blade 52 ′ in the processing tank 1 ′. While rising along the inner wall of the processing tank inner plate 10 ′ and reaching the position of the vortex breaker 6 ′ above the processing tank 1 ′, the vortex breaker 6 ′ is guided to the center and falls from there. Thereafter, the processed product W is subjected to any one or more of mixing, crushing, and drying while circulating through such a path.
[0003]
The above is the standard configuration and operation mode of the standard conical mixer / dryer D ′. However, when a small amount of the processed product W is to be processed in the conical mixer / dryer D ′, the processing is performed. Since the amount of the product W is small, it does not reach the position of the vortex breaker 6 'at the upper part of the processing tank 1', causing a stagnation in the circulating flow of the processing product W, resulting in a decrease in mixing property, and thus poor mixing. It was.
Further, in order to reach a relatively small amount of the processed product W to the vortex breaker 6 ', it is necessary to increase the rotational speed of the rotary blade 5'. It needs a lot of power and is not economical.
[0004]
[Technical problem to be solved]
The present invention has been made in view of such a background, and even when the amount of processed material is small, it is possible to reach the vortex breaker without increasing the rotational speed of the rotor blades, The technical problem is to develop a new conical mixer / dryer that can sufficiently circulate the processed material and does not destroy the particles of the processed material.
[0005]
[Means for Solving the Problems]
That conical mixing and drying machine of claim 1, wherein, depending rotor blades equipped in the opposite conical treatment tank, is raised along the processing of the processing tank to the inner wall of the processing tank, the elevated treated In an apparatus that performs any one or a plurality of treatments of mixing, crushing, and drying of a processed material while repeatedly moving the processed material to the vicinity of the center of the processing tank by a vortex breaker and dropping the processed material downward again The eddy current breaker comprises a circular arc breaker plate in plan view and a fixing bar for fixing it to the side wall, and the eddy current breaker is provided at a plurality of height positions of the processing tank. It is characterized by being able to.
According to the present invention, a single conical mixer / dryer can handle a wide range of processing amounts. Moreover, since the inside of the treatment tank can be circulated by a vortex breaker provided at a relatively low position even if the amount of treatment is small, the number of rotations of the rotor blades can be reduced and the stirring power can be reduced. Further, since it is not necessary to increase the rotational speed of the stirring blade, mixing, drying and the like can be performed without destroying the particles of the processed material.
[0006]
In addition to the above requirements, the conical mixer / dryer according to claim 2 is characterized in that at least one of the vortex breakers is provided below a central height position of the treatment tank. .
According to the present invention, it is possible to reduce the minimum allowable processing amount of the conical mixer / dryer without reducing the size of the processing tank. Even in the case of an extremely small amount of processed material, the rotational speed of the rotor blades can be reduced. Without raising, the treatment can reach the vortex breaker and circulate in the treatment tank.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The conical mixer / dryer of the present invention will be described below based on the illustrated embodiment. What is indicated by a symbol D in the figure is a conical mixer / dryer, which is generated by mixing and stirring the processed product W introduced into the processing tank 1 with the rotary blade 5 and heating the processed product W. It is an apparatus for exhausting the condensable gas (water vapor) and drying, mixing and crushing the processed product W.
The conical mixer / dryer D includes a heat medium circulator 2, a motor M, a speed reducer 3, a rotary blade 5 and a vortex breaker 6 which is a characteristic member of the present invention as main components.
[0008]
The treatment tank 1 is provided with a similar inverted-cone-shaped jacket outer body 11 at an appropriate interval with respect to substantially the entire outside of the treatment tank inner plate 10 formed in an inverted conical shape. 10 and the upper opening of the jacket outer body 11 are closed by the top plate 12, so that the internal space of the processing tank inner plate 10 is used as a processing space for the drying process.
[0009]
Further, between the processing tank inner plate 10 and the jacket outer body 11, an appropriate jammer plate 13 is provided to connect both members and to form a circulation path for a heat medium such as cold water, hot water, steam, oil, etc. It is. An inflow pipe 14 is attached to the lower part of the jacket outer body 11, while an outflow pipe 15 is attached to the upper part of the jacket outer body 11, and the heat medium circulator 2 is connected to the inflow pipe 14 and the outflow pipe 15.
In addition, when the conical mixer / dryer D is intended only for mixing or crushing, such a configuration for heat control may be omitted. Further, when the inside of the processing tank 1 is decompressed and dried, auxiliary equipment such as a condenser and a vacuum pump is provided on the rear side of the exhaust port 16 formed in the top plate 12. An input port 17 is formed for the top plate 12, and a discharge port 18 is formed below the processing tank 1.
[0010]
A motor M and a speed reducer 3 are provided on the top plate 12, and an output shaft thereof is connected to a rotary shaft 50 in a rotary blade 5 disposed in the processing tank 1. As shown in FIGS. 1, 3, etc., support bars 51 having different lengths are fixed to the rotary shaft 50 in the longitudinal direction. In this embodiment, a plurality of support bars 51 are provided. Were attached so as to be rotated by 90 ° in plan view.
[0011]
Then, by attaching two ribbon blades 52 having a narrow width (49 mm as an example) to the end of the support bar 51 with a phase shifted by 180 °, a tapered spiral rotor blade 5A is formed. It is what is done. The rotary blade 5A may be configured to have only one ribbon blade 52.
[0012]
Further, the treatment tank 1 is provided with a vortex breaker 6, and the vortex breaker 6 is provided at a plurality of height positions of the treatment tank 1 as a feature of the present invention. This vortex breaker 6 is a member for bringing the processed product W that has been raised along the inner plate 10 of the processing tank by the rotary blade 5 to the central portion and dropping it. Specifically, as shown in FIG. Are provided near the upper part of the treatment tank 1 and near the lower part of the intermediate height position. In the following, when it is necessary to distinguish the upper and lower vortex breakers 6, they will be referred to as the upper vortex breaker 60 and the lower vortex breaker 65, respectively.
As shown in FIG. 3, the ribbon blade 52 provided at the upper stage of the lower vortex breaker 65 is cut off over a range of 90 ° in plan view.
[0013]
Although the upper vortex breaker 60 and the lower vortex breaker 65 have different sizes depending on the circumference of the processing tank 1 to be installed, they have the same configuration, and as shown in FIG. 2 and FIG. Breaker plates 61 and 66 and fixing bars 62 and 67 for fixing the same to the side wall are provided. In the present embodiment, two upper vortex breakers 60 and two lower vortex breakers 65 are provided at positions facing each other by 180 ° in plan view. Of course, in the present invention, in addition to such an installation mode, various implementations in which various numbers of vortex breakers 6 are provided at various mounting positions within a range where a plurality of vortex breakers 6 are provided at a plurality of height positions. The form is included.
[0014]
The conical mixer / dryer D of the present invention is configured as described above as an example, and the state of the processed product W in the conical mixer / dryer D will be described below.
First, the case where the amount of the processed product W that exhibits the effects of the present invention is small will be described. First, when a small amount of the processed material W is introduced into the processing tank 1 from the input port 17 while starting the motor M and rotating the rotary blade 5 </ b> A, the entire processed product W becomes a spiral ribbon blade 52 in the processing tank 1. It will rise along the inner wall of the processing tank inner plate 10 while being guided. Then, when the processed product W reaches the position of the lower eddy current breaker 65 as shown in FIG. 4A, it is guided by the breaker plate 66 and brought to the center, and is dropped from here. W circulates through such a route, and any one or more of mixing, crushing, and drying are performed.
As described above, the conical mixer / dryer D is provided with the lower vortex breaker 65 for the lower stage of the treatment tank 1, so that it does not reach the vortex breaker 6 ′ at the upper part of the treatment tank 1 as in the prior art. Even a small amount of the processed product W can be smoothly circulated. The rotating blade 5A is rotated at a low speed, so that the processed material W sufficiently reaches the lower vortex breaker 65, so that the particles of the processed material W are not destroyed due to unnecessary high speed rotation. Stirring power can be reduced and energy saving is excellent.
[0015]
Next, the case where the amount of the workpiece W is a standard amount will be described. Even in the case of a standard amount of the processed product W, when the processed product W is introduced into the processing tank 1 from the input port 17, the entire processed product W is guided to the spiral ribbon blade 52 in the processing tank 1 and the inner wall of the processing tank inner plate 10. Will rise along. Since the amount of processing is larger than that in the case of the small amount, a part of the lower vortex breaker 65 is moved toward the center, but as shown in FIG. 4B, most of the amount reaches the position of the upper vortex breaker 60. Guided, guided by the breaker plate 61, brought to the center, and falls from here. Thereafter, the processed product W is subjected to any one or a plurality of processes of mixing, crushing, and drying while smoothly circulating through such a path.
[0016]
[Other embodiments]
In addition, the conical mixer / dryer D has a bulky processing tank in which the processing tank 1 has an inverted conical shape and is connected to a cylindrical upper processing body 19 having a relatively high height as shown in FIG. 1 can be applied. In this case, as shown in the drawing, the upper processing cylinder portion 19 has a vertical peripheral wall surface, so that it can be carried out without providing the vortex breaker 6. Of course, the upper processing cylinder portion 19 has an appropriate height. One or a plurality of vortex breakers 6 may be provided at the location. In the present embodiment, in addition to the ribbon blade 52 provided above the lower stage of the lower vortex breaker 65, the ribbon blade 52 provided above the upper stage of the upper vortex breaker 60 is also cut off over a range of 90 ° in plan view. Yes.
[0017]
【The invention's effect】
According to the conical mixer / dryer D according to claim 1, since the vortex breaker 6 is provided at a plurality of height positions of the treatment tank 1, a single conical mixer / dryer D can handle a wide range of treatments. It becomes possible to cope with W. Moreover, since the inside of the processing tank 1 can be circulated by the vortex breaker 6 provided at a relatively low position even if the amount of the processed material W is small, the rotational speed of the rotary blade 5 can be reduced and the stirring power can be reduced. Further, since it is not necessary to increase the rotation speed of the stirring blade 5, mixing, drying, and the like can be performed without destroying the particles of the processed product W.
[0018]
Further, according to the conical mixer / dryer D according to the second aspect, at least one of the vortex breakers 6 is provided below the central height position of the processing tank 1, so that the processing tank 1 is made smaller. In addition, the minimum allowable processing amount of the conical mixer / dryer D can be reduced. Therefore, even if the amount of the processed material W is very small, the processed material W can reach the vortex breaker 6 and circulate in the processing tank 1 without increasing the rotational speed of the rotary blade 5.
[Brief description of the drawings]
FIG. 1 is a skeletal longitudinal side view showing a conical mixing dryer according to the present invention.
2 is a cross-sectional view taken along lines AA and BB in FIG. 1. FIG.
FIG. 3 is a perspective view showing the inside of the treatment tank .
FIG. 4 is an explanatory diagram showing a comparison of the state of circulation of a processed product when the amount of the processed product is small and when it is a standard amount.
FIG. 5 is a longitudinal side view showing another embodiment in which the configuration of the treatment tank is varied.
FIG. 6 is a skeletal longitudinal sectional side view showing a conventional conical mixer / dryer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Processing tank 2 Heat-medium circulation machine 3 Reduction gear 5 Rotor blade 6 Eddy current breaker 10 Processing tank inner plate 11 Jacket outer body 12 Top plate 13 Jama plate 14 Inflow pipe 15 Outflow pipe 16 Exhaust port 17 Inlet port 18 Outlet port 19 Upper process Body 50 Rotating shaft 51 Support bar 52 Ribbon blade 60 Upper vortex breaker 61 Breaker plate 62 Fixed bar 65 Lower vortex breaker 66 Breaker plate 67 Fixed bar D Conical mixing dryer M Motor W Processed

Claims (2)

The rotary blade equipped on the opposite conical treatment tank, the treated product of the processing tank is raised along the inner wall of the processing tank, is moved near the center of the treatment tank the elevated treated by vortex breaker In the apparatus for performing any one or more of mixing, crushing, and drying of the processed material while repeatedly dropping the processed material downward again, the vortex breaker is a breaker plate having an arc shape in plan view And a fixing bar for fixing it to the side wall, and this vortex breaker is provided at a plurality of height positions of the treatment tank.   2. The conical mixer / dryer according to claim 1, wherein at least one of the vortex breakers is provided below an intermediate height position of the treatment tank.

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