JP3722890B2 - Vibration type dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dryer used in a drying process, for example, when a gel or semi-solid processed product is made into powder, and in particular, a vibration type dryer that vibrates a processed product to be dried and moves the inside of the dryer. It is about.
[0002]
[Prior art]
In recent years, a polymer compound in a granular or powder form has been used in many fields. For example, a granular polymer flocculant is convenient and frequently used for agglomeration and dehydration of organic sludge produced by sewage and human waste treatment.
As an example of producing such a granular or powdery polymer material, an example of a method for producing a water-soluble polymer compound will be described.
First, a photopolymerization initiator is added to a predetermined monomer aqueous solution whose pH is adjusted, and polymerization is performed by irradiation with an ultraviolet lamp to prepare a semi-solid polymer material. Thereafter, a powdery polymer material is produced through a coarse crushing step, a drying step, a crushing step, and the like.
[0003]
By the way, in the drying process, a vibratory dryer is often used for reasons such as high drying efficiency. An example of this vibration type dryer is shown in FIG.
The vibration type dryer 10 shown in FIG. 5 is configured by connecting three vibration type dryers, that is, a first vibration type dryer 12, a second vibration type dryer 14, and a third vibration type dryer 16. However, basically, all the vibratory dryers 12, 14, and 16 are the same, and only one or two or four or more may be used as necessary.
The first vibratory dryer 12 includes a heat-insulating housing 18, a net 20 provided in the housing 18, a plurality of hot air blowing devices 22 disposed below the net 20, and a net above the net. A plurality of arranged air exhaust devices 24, an inlet 26 provided at one end portion of the housing 18 to input a processed product to be dried, and provided at the other end portion of the housing 18 to discharge the processed product. A discharge port 28 is schematically configured.
[0004]
The net 20 is used to place a processed product to be dried, and is a net-like material having heat resistance and durability, and the mesh is set so that the processed product to be dried cannot pass through.
Further, although not shown, the housing 18 is provided with a vibration device, which vibrates finely in the vertical direction. Due to this vibration, the processed material thrown on the net 20 is moved from the front end (input port side 26) to the rear. Move to the end (discharge port 28 side).
A dispersion plate 30 formed by combining inclined plate surfaces at the front end portion of the net 20 and below the input port 26 so as to uniformly disperse the processed material to be charged and prevent it from staying. Is provided.
The hot air blowing device 22 is substantially constituted by a blowout port 34 and a hot air controller 32 that controls the blowout port 34, and the warm air blown from the blowout port 34 passes through the mesh of the net 20 and is processed on the net. Is heated and dried.
[0005]
Similarly, the second vibratory dryer 14 also has a schematic configuration in which a net 20 provided with a dispersion plate 30 at the front end, a hot air blowing device 22 and an air exhaust device 24 are arranged in a housing 18 ′. In addition, the third vibration type dryer 16 is also schematically configured by arranging a net 20, a hot air blowing device 22, and an air exhaust device 24 in a housing 18 ''.
Further, the discharge port 28 of the first vibration type dryer 12 and the input port 40 of the second vibration type dryer 14 are connected by a pipe 36, and a cyclone 38 is interposed between the pipe 36 and the input port 40. ing. The discharge port 42 of the second vibration type dryer 14 and the input port 44 of the third vibration type dryer 16 are directly connected.
[0006]
In the vibration type dryer 10 shown in FIG. 5, first, a semi-solid processed material is charged into the charging port 26 of the first vibration type dryer 12 from the left side of FIG. 5.
Then, the processed product dropped from the charging port 26 onto the dispersion plate 30 provided at the front end portion of the net 20. The processed material dropped on the dispersion plate 30 is dispersed and dropped on the front end portion of the net 20 along the slope of the dispersion plate 30. The net 20 vibrates, and the processing object placed on the net 20 is shaken by the vibration and gradually moves backward, and is discharged out of the housing 18 through the discharge port 28. The inside of the housing 18 is in a high temperature state by the hot air from the hot air blowing device 22, and the processed material is dried while moving in the housing 18.
The processed product discharged from the first vibration type dryer 12 falls on the dispersion plate 30 of the net 20 through the cyclone 38 from the inlet 40 of the second vibration type dryer 14. In the second vibration type dryer, the same drying treatment as that of the first vibration type dryer 12 is performed, and subsequently, the processed material discharged from the discharge port 42 is supplied from the input port 44 of the third vibration type dryer to the third vibration type dryer. It is placed on the net 20 of the dryer 16, shaken by vibration while being heated, and discharged from the discharge port 46 to the outside.
Thereafter, the processed product discharged from the discharge port 46 is subjected to a subsequent process such as a pulverization process, and becomes granular or powdery.
[0007]
[Problems to be solved by the invention]
It is preferable that the polymer material is dried as uniformly as possible. In the above-described vibration-type dryer, the polymer material to be dried is uniformly placed on the net with the thickness of the layer to be processed being constant. It is important to place it.
In the vibration type dryer 10, the polymer material is dispersed by the dispersion plate 30 provided below the input ports 26 and 40 and at the front end portion of the net 20.
However, with this configuration, the dispersion plate 30 vibrates together with the net 20, and the polymer material introduced from the inlets 26 and 40 falls onto the net without being sufficiently dispersed and stays there. Drying may become uneven.
In particular, when the polymer material is placed on the net and the thickness of the polymer material is different, the moisture content varies depending on the location, resulting in incomplete drying and excessive drying. It was very inconvenient.
[0008]
The present invention has been made to solve the above-described problems, and provides a vibration type dryer that dries a processed product uniformly while having a simple configuration.
[0009]
[Means for Solving the Problems]
The vibratory dryer according to the present invention includes a housing in which an input port into which a gel or semi-solid processed product to be dried is input is formed at the front, and an exhaust port through which the processed product is discharged is formed at the rear. A vibratory dryer provided in the housing, comprising a net for transferring the processed material from the inlet to the outlet while vibrating, and a temperature adjusting means for heating the inside of the housing,
A dispersion plate that disperses and places the processed material introduced from the inlet on the net is provided below the inlet so as not to vibrate with the net, and is placed on the net by a rotating roll bar. The distributor for making the layer thickness of the processing object placed constant is arranged above the net in the housing.
[0010]
The invention described in claim 2 is characterized in that a plurality of the vibratory dryers described in claim 1 are connected to each other.
[0011]
In the vibration type dryer of the present invention, a dispersion plate is provided that is separated from the net so that the vibration of the net for transferring the processed material is not transmitted, and below the input port to disperse and drop the processed material on the net, In addition, since a distributor for arranging the layer thickness of the processed material to be transferred is arranged, the processed material to be dried is uniformly placed on the net.
Therefore, the processed product can be evenly dried.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An example of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the component similar to the said conventional vibration type dryer, and description is simplified.
[0013]
The vibratory dryer 60 of the embodiment shown in FIG. 1 is configured by connecting three vibratory dryers, that is, a first vibratory dryer 54, a second vibratory dryer 56, and a third vibratory dryer 58. Has been.
It should be noted that the present invention includes those composed of only one and those composed of two or four or more connected.
[0014]
The first vibration type dryer 54 includes a heat-insulating housing 18, a net 20 provided in the housing 18, a temperature control unit, and a processed product provided at one end of the housing 18 to be dried. The charging port 26 is generally configured by a loading port 26 and a discharge port 28 provided at the other end of the housing 18 for discharging the processed material.
The temperature adjusting means includes a plurality of hot air blowing devices 22 disposed below the net 20 and a plurality of air exhausting devices 24 disposed above the net.
In the present invention, the net 20 is used to place a processed product to be dried, and is a net-like or perforated plate having heat resistance and durability, and the mesh is of a degree that the processed product to be dried cannot pass through. It is said.
[0015]
Further, although not shown, the net 20 is provided with a vibration device, which vibrates finely in the vertical direction. Due to this vibration, the processed material thrown on the net 20 is moved from the front end (input port side 26) to the rear. Move to the end (discharge port 28 side).
The hot air blowing device 22 is substantially constituted by a blowout port 34 and a hot air controller 32 that controls the blowout port 34, and the warm air blown from the blowout port 34 passes through the mesh of the net 20 and is processed on the net. Is heated and dried, and is discharged from the air exhaust device 24.
Similarly, the second vibration type dryer 56 is also schematically configured by arranging the net 20, the hot air blowing device 22 and the air exhaust device 24 in the housing 18 ', and the third vibration type dryer. 58 is also schematically configured by arranging the net 20, the hot air blowing device 22 and the air exhaust device 24 in the housing 18 ''.
[0016]
Further, the discharge port 28 of the first vibration type dryer 54 and the input port 40 of the second vibration type dryer 56 are connected by a pipe 36, and a cyclone 38 is interposed between the pipe 36 and the input port 40. ing. The discharge port 42 of the second vibration type dryer 56 and the input port 44 of the third vibration type dryer 58 are directly connected.
[0017]
In the vibration type dryer 60 of the present embodiment, a dispersion plate 62 is provided below the inlet 26 of the first vibration type dryer 54. The dispersion plate 62 is attached to the inlet 26 so as to be separated from the net 20 so that the vibration of the net 20 is not transmitted as much as possible.
The dispersion plate 62 will be described with reference to FIG. The dispersion plate 62 includes an attachment portion 66 attached to the insertion port 26 and a smooth surface 64 inclined with respect to the housing 18. The attachment portion 66 is fixed to the insertion port 26 with screws or screws. The smooth surface 64 is inclined downward in the width direction of the net 20 and toward the rear portion of the housing 18 with the vicinity of the center in the width direction of the mounting portion 66 as the top.
The processed material falls from the charging port 26 onto the smooth surface 64 of the dispersion plate 62 and equally falls onto the net 20 along the inclined smooth surface 64.
[0018]
In the dispersion plate 62 shown in FIG. 2, the smooth surface 64 is configured by combining four triangular planes, but the present invention is not limited to this, and the treatment dropped from the inlet 26. As long as an object falls evenly on the net 20, for example, it may be composed of a single curved surface.
A similar dispersion plate 62 is also provided below the charging port 40 of the second vibration type dryer 56.
[0019]
Furthermore, in the vibration type dryer according to the present invention, a distributor 68 for keeping the layer thickness of the processed material on the net 20 constant is disposed. As shown in FIG. 1, the distributor 68 is in the vicinity of the rear of the dispersion plate 62 in the first vibration type dryer 54, and in the vicinity of the upper portion of the net 20 in the center of the housing 18 ′ in the second vibration type dryer 56. Are arranged.
The distributor 68 will be described with reference to FIG. The distributor 68 shown in FIG. 3 is roughly configured by a rotating shaft 72, a plurality of roll bars 70 coupled to the rotating shaft 72 by a coupling member 74, and a motor 76 that rotates the rotating shaft 72.
The rotation shaft 72 and the roll bar 70 parallel to the rotation shaft 72 are provided along the width direction of the net 20. Further, when the rotating shaft 72 rotates and the roll bar 70 is at the lowest point, that is, when the roll bar 70 is closest to the net 20 (roll bar 70 'in FIG. 3), the roll bar 70' is placed between the roll bar 70 'and the net. The distributor 68 is provided on the net 20 so that a certain gap is formed. This gap adjusts the layer thickness of the processed product to be constant.
[0020]
Furthermore, a crusher 80 is provided in the vibration type dryer 60 of the present embodiment. In the present embodiment, as shown in FIG. 1, the crusher 80 includes a rear vicinity of the inlet 40 of the second vibration type dryer 56, the middle between the distributor 68 and the discharge port 42, and a third vibration type dryer. It is arranged in the vicinity of the rear of the 58 inlets 44.
The crusher 80 is as shown in FIG. 4, and is roughly constituted by a drive shaft 82 connected to a motor 86 and a plurality of crushing blades 84 protruding outward from the drive shaft 82.
In this crusher 80, the rotating crushing blade 84 crushes the processed material, and prevents the processed materials from adhering to each other.
[0021]
Furthermore, in the vibration type dryer 60 of the present embodiment, layer thickness meters 88 are arranged at a plurality of locations. This layer thickness meter 88 measures the thickness of the processed material placed on the net. As shown in FIG. 1, the vicinity of the distributor 68 behind the second vibratory dryer 56 and the outlet In front of 42 and behind the crusher 80 of the third vibratory dryer 58, they are distributed in three places. The layer thickness meter 88 is preferably of a type using an optical sensor.
[0022]
In the vibration type dryer 60 of the present embodiment, the semi-solid processed material is first charged into the charging port 26 of the first vibration type dryer 54 from the left side of FIG.
Then, the charged processed material is charged into the housing 18 of the first vibration type dryer 54 from the charging port 26. At that time, the processed material falls from the inlet 26 onto the dispersion plate 62 attached to the housing 18. The processed material dropped on the dispersion plate 62 is uniformly dispersed on the front end portion of the net 20 along the smooth surface 64 of the dispersion plate 62 and falls.
The net 20 vibrates, and the processing object placed on the net 20 is shaken by the vibration and gradually moves backward, and the layer thickness is kept uniform by the rotating roll bar 70 of the distributor 68 while maintaining the uniform thickness. It is discharged out of the housing 18 through the discharge port 28 while being dried by the warm air from the air blowing device 22.
[0023]
The processed product discharged from the first vibration type dryer 54 is introduced into the housing 18 ′ from the inlet 40 of the second vibration type dryer 56 through the cyclone 38. Here again, the processed material introduced from the introduction port 40 falls on the dispersion plate 62 and then uniformly falls on the net 20 along the smooth surface 64. The processing object placed on the vibrating net 20 is gradually transferred to the discharge port 42 while being shaken and dried. The processed material is first crushed by the crusher 80 during the transfer. The inside of the housing 56 of the vibration type dryer 56 is in a high temperature state, and the processed material once dispersed tends to adhere again. Therefore, the prevention of the adhesion by the crusher 80 is effective in preventing the fixedness of the processed material. is there. The processed product that has passed through the crusher 80 is made uniform by the distributor 68 and then the layer thickness is measured by a layer thickness meter 88. Thereafter, the processed material is crushed again by the crusher 80, and after the layer thickness is measured by the layer thickness meter 88, it is discharged out of the housing 18 ′ from the discharge port 42.
Subsequently, the processed product is transferred to a third vibration type dryer. The processed material is also dried on the net 20 in the third vibration type dryer 58, and is first crushed by the crusher 80, and the thickness of the layer is measured by a layer thickness meter 88 disposed at three locations. After that, it is discharged from the discharge port 46 to the outside of the housing 18 ''.
In this way, the processed product that is uniformly and sufficiently dried is subjected to a subsequent step such as a pulverization step, if necessary, and becomes granular or powdery.
[0024]
The above-described vibration type dryer 60 is configured by connecting three vibration type dryers 54, 56, and 58. Therefore, the vibration type dryer that does not have the dispersion plate 62 and the distributor 68 (individually). 3rd vibration type dryer) is also included, but it is needless to say that the dispersion plate 62, the distributor 68, the crusher 80, and the layer thickness meter 88 may be arranged in one vibration type dryer. is there.
[0025]
In the vibration type dryer 60 according to the present embodiment, a dispersion plate 62 that does not vibrate together with the net 20 is provided, and the processed product is uniformly placed on the net 20 and the thickness of the processed product layer is reduced. Since the distributor 68 that keeps constant is disposed, the processing object is uniformly placed on the net without being biased. Therefore, it is possible to uniformly dry the processed material, and it is possible to prevent partial drying incomplete or excessive drying.
Further, by disposing the crusher as in this embodiment, it is possible to prevent the processed products from adhering to each other, and the processed products can be placed on the net 20 uniformly.
[0026]
If a plurality of vibration dryers are connected as in the present embodiment, the size of each vibration dryer can be reduced. If the vibration dryer is downsized, the net can be shortened, the driving force for vibrating the net can be reduced, and the temperature can be finely adjusted.
[0027]
【The invention's effect】
The vibration-type dryer of the present invention is a vibration-type dryer including a housing, a net that transfers a processed material from the inlet to the outlet of the housing while vibrating, and a temperature control unit that heats the inside of the housing. Dispersion plate that disperses and places the processed material thrown in from the loading port on the net is disposed below the loading port and placed on the net by a rotating roll bar. A distributor for making the layer thickness of the product constant is arranged above the net in the housing, and the distribution plate that does not vibrate with the vibration of the net and the layer thickness of the processed product to be transferred With a distributor that keeps constant, the processed product can be placed on the net and dried. Accordingly, the processed product is uniformly dried, and problems such as partial insufficiency and excess of drying can be solved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a vibration type dryer according to an embodiment of the present invention.
FIG. 2 is a perspective view of a dispersion plate.
FIG. 3 is a front view of a distributor.
FIG. 4 is a front view of a crusher.
FIG. 5 is a block diagram showing a conventional vibration type dryer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Vibration type dryer 12 1st vibration type dryer 14 2nd vibration type dryer 16 3rd vibration type dryer 18 Housing 20 Net 22 Hot air blowing device 24 Exhaust device 26 Input port 28 Outlet port 30 Dispersion plate 38 Cyclone 40 inlet 42 outlet 44 inlet 46 outlet 54 first vibratory dryer 56 second vibratory dryer 58 third vibratory dryer 60 vibratory dryer 62 dispersion plate 64 smooth surface 68 distributor 70 roll bar 80 Crusher

Claims (2)

A housing in which an input port into which a gel or semi-solid processed product to be dried is input is formed at the front, and an exhaust port through which the processed product is discharged is formed at the rear;
A net provided in the housing for transferring the processed material from the input port to the discharge port while vibrating;
A vibration type dryer having a temperature control means for heating the inside of the housing,
A dispersion plate that disperses and places the processed material introduced from the input port on the net is provided below the input port so as not to vibrate with the net,
A vibratory dryer, characterized in that a distributor for making a layer thickness of a processing object placed on a net constant by a rotating roll bar is disposed above the net in the housing. 2. A vibration dryer according to claim 1, wherein a plurality of the vibration dryers are connected to each other.

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