JPH04194585A - Vibratory pressure reducing dryer - Google Patents

Abstract

PURPOSE:To provide an effective agitating force and to get a high efficient drying action by a method wherein a drying machine is comprised of means for heating an inside part of a sealingly closed container, a dried material supplying port, a dried material discharging port, a gas discharging port, a discharging device and a vibration generating device displaced in respect to an axial direction of the closed container. CONSTITUTION:A vibratory electric motor 60 is fixed to an outer circumferential wall surface of a drum 32 displaced from a central line C-C passing through an axis G of the drum 32. Unbalanced weights 60a and 60b are fixed to both ends of a rotary shaft 60a of the vibratory electric motor 60. Centrifugal force is generated under rotation of these weights and the centrifugal force is applied to the drum 32. Dried material (m) is fed into an inside spacing A of the drum 32 through a supplying port 40. When the vibratory electric motor 60 is driven, the material (m) is transported along an inner circumferential wall surface of the drum 32 toward a top part and as the material reaches a certain height, the material is automatically dropped and this operation is repeated so as to perform an agitating operation around a line G. Thermal medium is supplied from a boiler 35 into a steam jar 34 within the drum 32 and then the material (m) is uniformly heated. Moisture or various solvents are gasified and supplied to a heat exchanger 54, the solvents are separated through a heat exchanging operation with the refrigerant of a freezer 55 and recovered into a solvent recovery device 56.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a vibratory vacuum dryer.

[Prior art and its problems] For example, Japanese Patent Publication No. 55-37944 discloses the following vibration dryer. In other words, as shown in FIGS. 5 to 7, a cylindrical drum (1)
is closed with lids f21 and f31 on both sides to form a sealed structure, and a jacket (4) is attached to the inner peripheral wall in a -like manner, and an inlet (5) is connected to the inlet (5) through which the heat medium is introduced. This is because the heat medium flows out, and the i-drum f1+, which is guided to the outside from the opening (6), is supported by an elastic support mechanism (7) that elastically supports it almost horizontally.
This consists of a pair of front and rear arms (8) and a coil spring (
9), and supports the drum fi+ so as to vibrate. In addition, a material supply port +11) is formed in one earthen wall of the drum (1), to which material is supplied from a hopper (14) via a flexible gap (12) and a rotary valve (13). The other lower wall has a material outlet (15), a flexible tube (16), and a rotary valve (1).
7), the dried material is discharged to the outside. Further, as shown in FIG. 6, a vibration generator (20) comprising a vibration motor or the like is provided directly below the axis of the drum (1).

The conventional dryer is constructed as described above, and when the vibration generator (20) is driven, the material M to be dried in the drum (1) moves as shown by the loop line A. The material is dried by exchanging heat with the heat medium introduced into the jacket (4), but in this conventional example, the material is continuously supplied from the hopper (14), which is then exposed to the lid (2).
The material is discharged to the outside via a material discharge port (15), a flexible cylinder (15), and a rotary valve (17) over a vertically movable weir plate (18) provided near the material.

As described above, the material M to be dried is dried in the drum 11), and as shown in FIG. Furthermore, as shown by the dashed line locus B, this drum +1
In order to perform the stirring action also on the right side in the figure with respect to the axis G of 1, it should rise along the inner wall.

Also, actually this I! It is unlikely that a height as large as A and B can be obtained.

FIG. 7 shows another example of this prior art, in which a plurality of conduits (21) for passing a plurality of heat mediums are provided in the drum fil.
This is intended to expand the heat transfer area, but since it is located below the level of the weir plate (18), there is no problem with this, but the arrangement is limited to this area. If it is not, it will not have any branch collection.

Also, in the conventional example described above, when the material M evaporates moisture, it is exhausted to the outside through the exhaust port (19).
In other words, it acts so that the atmospheric pressure inside the drum jll and the atmosphere are in equilibrium, but if a large amount of moisture is rapidly vaporized from the material M to be dried, the moisture will accumulate in the drum ti), and the This attenuates the drying effect of the drying material M.

[The problem that the invention seeks to solve?] ? ] The present invention has been made in view of the above problems, and it can be used efficiently no matter what amount of water the material to be dried contains, and even if it applies the same vibration force as the conventional example, it can provide a more effective stirring force. An object of the present invention is to provide a vibration vacuum dryer that can obtain a more efficient drying action.

[Means for Solving the Problems] The above object is to provide a sealed container that is supported so as to be able to vibrate, a means for heating the inside of the sealed container, a supply port for a material to be dried formed in the sealed container, and a drying material supply port formed in the sealed container. an exhaust port, a gas exhaust port formed in a part of the airtight container, an exhaust device connected to the gas exhaust port, and a vibration generator provided offset to one side with respect to the narrow direction of the airtight container. This is accomplished by a vibrating vacuum dryer, which consists of a device.

[Function] Since the sealed container is vibrated by a vibration generator installed biased to one side with respect to the axial direction of the container, the material to be dried inside the container is moved upwardly along the inner wall of the container than in the past. The inside of the closed container is heated by a means that heats the inside of the closed container while drawing a trajectory in which it receives a transfer force and a large stirring force. In addition, the inside of the container is forcibly exhausted from the gas outlet by an exhaust device, so even if moisture or liquid components are generated from the material to be dried, the air is efficiently taken in by the exhaust device, and the material to be dried in the sealed container is can be dried more efficiently than before. Furthermore, by liquefying the gas discharged from the gas outlet outside, not only the moisture but also the solvent that dissolved the material to be dried can be recovered, making it possible to effectively utilize resources.

[Example 1] Hereinafter, a vibration vacuum dryer according to an example of the present invention will be described with reference to FIGS. 1 and 2.

In Figure 1, this vibrating vacuum dryer is (30) as a whole.
The vibration vacuum dryer main body (31) is equipped with a cylindrical metal drum (32), to which a heat insulator (33) made of a heat insulating material is attached. Steam jar (34) (Conventional jacket (
(corresponding to 4)) is attached over the entire inner peripheral wall. A heat medium is supplied to this steam jar (34) from a boiler (35) via a control valve (35) and a bellows pipe (39). This passes through a steam jar f341 and is discharged to the outside from a valve (42). Also, from the boiler (35), the heat medium is introduced in a pressurized state into the steam jar (34) attached to the inner wall of the drum (32) of the main body (31) of the vibration vacuum dryer. The pressure from the (36) side, that is, the boiler (35), is measured by a pressure gauge (37), and the pressure supplied to the vibration vacuum dryer body (31) side is measured by a pressure gauge (38). It looks like this.

The drum (32) has a pair of front, rear, left and right supports f45al f4
5b), f46a) (46b) above spring f44a)
+44bl, and is supported via arms (43a) and (43b), that is, the drum (32) is supported so as to be able to vibrate.

Further, a supply port (40) for supplying the material to be dried is formed at one end of the earthen wall of the drum (32), and a material discharge port (41) is formed at the bottom of one end wall. There is. Furthermore, an exhaust gas outlet (49) is formed on the other side of the earthen wall.
A filter (48) is disposed inside this. The exhaust port (49) is connected to the heat insulating material (53) through the hollow pipe (501).
is connected to a heat exchanger (54) attached to the inner wall surface, and a refrigerator (55) is disposed above this.

From here, refrigerant is supplied into the heat exchanger (54). A solvent recovery device (56) is provided below the heat exchanger (54), and a solvent discharge valve (57) is attached to the bottom wall of the solvent recovery device (56). Heat exchanger (54)
An exhaust system (59) consisting mainly of a vacuum pump (58) is provided on the earthen wall of the oscillatory vacuum dryer body (31) through a heat exchanger (54) and a bellows tube (50). The internal space Δ is configured to be forcibly evacuated at all times.

Further, according to the present invention, as shown in FIG.
) A vibration electric motor (60) is attached to a part of the outer circumferential wall surface of the tram (32), which is offset to the left in the drawing along the vertical center line C--C passing through the axis G of the tram (32).

The vibration electric motor (60) has a known configuration, and has semicircular unbalanced ways hf at both ends of its rotation axis f60a).
60b) +60bl is fixed, and its rotation generates centrifugal force, which is applied to the drum (32).

The vibration vacuum dryer (30) according to the embodiment of the present invention is constructed as described above, and its operation will be explained next.

This embodiment can be applied to various materials to be dried, but for example, it is applicable to drying organic materials containing a certain type of organic heating medium, such as acrylic resins, resin additives, and food additives. explain.

Such materials are introduced into the internal space Δ of the drum (32) from the supply port (4o) in FIG. Once the supply reaches a certain level, the supply will be stopped. Then, when the vibration electric motor (60) is driven, the supplied material m is transferred to the second
Perform the exercise shown by Q in the diagram. That is, the drum (3
Along the inner circumferential wall surface of 2), the material m receives a force that moves it toward the top, and when it reaches a certain height, it falls downward by natural fall as shown by the arrow. By repeating such a movement, a stirring movement shown by the Q line is performed.

On the other hand, the heat medium is transferred from the boiler (35) to the valve (36),
It is supplied to the steam jar (34) inside the drum (32) through the bellows pipe (39), and uniformly heats the interior space Δ. The material m subjected to the stirring action as shown in Fig. 2 is heated uniformly, and moisture and various solvents are vaporized from this, but this is carried out by the bellows pipe (50) by the exhaust system (59).
The vaporized gas immediately passes through a filter (48) to remove dust and the like, and the vaporized gas is supplied to the heat exchanger (54). Here, the solvent is separated by heat exchange with the refrigerant from the refrigerator (55), and the solvent recovery unit (
56). This is appropriately discharged to the outside via a valve (57).

The vibrating vacuum drying %t301 according to the embodiment of the present invention is constructed and operates as described above, but the material to be dried is subjected to a large stirring action as shown in Fig. 2, and the water separated from it is Since the gas containing liquid and liquid is forcibly exhausted by the exhaust system (59), the drying effect can be greatly improved compared to the conventional method.

3 and 4 show a vibration vacuum dryer according to a second embodiment of the present invention, parts corresponding to those in the first embodiment are denoted by the same reference numerals, and detailed explanation thereof is omitted. do. That is, according to this embodiment, a pair of vibration electric motors f70al' (70bl) are mounted on the side wall of the drum (32).
71), and these vibration motors f
70al +70bl is its rotation axis (81al (81
b) Unbalanced weights (9'Oa) + 9 at both ends
ON is installed on the tail. Vibration electric motor (70a) f70
b) has the same configuration, but the rotation axis f81a) f8
1b) rotates in opposite directions, as is known, a linear vibration force V, which is synthesized by the center forces of both speeds due to the synchronization force, is obtained in the direction shown in FIG. 4. This allows the drum (32)
Unlike the first embodiment, the material m introduced into the interior is centered at the axis G.
It receives a transporting force along the right inner circumferential wall toward the top, and undergoes a stirring movement as shown by line R. It is clear that the same effects as those of the above embodiment can be obtained by such an embodiment. In addition, due to the linear vibration force, compared to the first embodiment,
The transfer force toward the top is received along the larger inner circumferential wall, the distance to the top is greater, and the stirring force is even greater than in the first embodiment. Therefore, the drying effect becomes greater.

Although each embodiment of the present invention has been described above, the present invention is of course not limited to these, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiments, one vibration motor or two vibration motors are used as the vibration generator, but the shaft center G is set at a position offset from the first shaft G of the drum (32) in the same way as in the above embodiments. A rotating shaft rotatably supported at both ends in parallel with the above may be provided, and unbalanced weights may be attached to both of the rotating shafts to rotate the rotating shaft. A linear vibration force as in the second embodiment may be applied to the drum (32) by an electromagnetic drive unit.

In addition, in the above embodiments, the solvent is vaporized from the material and recovered, but it may be only moisture.In this case, not only will the drying effect be increased, but also moisture will be added to the exhaust system (59). This is to protect it by preventing it from being introduced.

Further, the means for heating the closed container is not limited to the steam jar (34), but may be an electric heating coil disposed inside or an induction heating means disposed outside.

[Effect of the invention 1] As described above, according to the vibration vacuum dryer of the present invention, even if the material to be dried contains a large amount of water or liquid, it is possible to efficiently and quickly dry the material. can.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a vibration heating dryer according to a first embodiment of the present invention, FIG. 2 is a front view of the main body of the dryer, and the third section is a vibration heating according to a second embodiment of the present invention. A side view of the main body of the dryer, FIG. 4 is a front view of the same, FIG. 5 is a partially broken side view of a conventional vibration heating dryer, FIG. 6 is a front view of the same, and FIG. 7 is a front view showing the other side. It is. In the figure, (30)... Vibration vacuum dryer (31)... Vibration vacuum dryer body (32)...・・・ ・・・・・・ ・・・
Drum-F341...
・・・・・・・・・・・・Steam jar (40)
·· ·· · ·· ·· supply
Opening (41) ・・・・・・・・・・・・・ Discharge port (4a)・・・・・・・・・・・・
...Exhaust gas inlet f60) f70al f70b)
---Vibration electric motor (60a)...
・・・・・・・・・Axis (60bl・・・・・・・・・・・・
... Unbalance weight Fig. 2 60 ...... Bottle motor No. 61! 1 Fig. 7

Claims (1)

[Claims] a closed container supported so as to vibrate; a means for heating the inside of the closed container; a material supply port and a discharge port for the material formed in the closed container; and a means for heating the inside of the closed container; A vibratory vacuum dryer comprising a gas outlet, an exhaust device connected to the gas outlet, and a vibration generator provided offset to one side with respect to the axial direction of the closed container.