JP2007313381A - Concentrator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a concentrator to prevent the deposit in a treated liquid from occurring in a vapor barrel part. <P>SOLUTION: This concentrator is provided with: a roughly cylindrical drum 5 disposed with an axis L1 directed to be horizontal and having a heating means 37 on the outer periphery thereof; a supply port opened on a body barrel part 15 forming one side of the drum 5 in the axis L1 direction and supplying the treated liquid into the body barrel part 15; a discharge port 21 opened at a lower part of the vapor barrel part 17 forming the other side of the drum 5 and discharging the concentrated treated liquid concentrated by the heating means 37 from the vapor barrel part 17; a rotary shaft 11 rotatably pivoted penetrating through the drum 5 in the direction of the axis L1; and agitation blades 13 fixed to the rotary shaft 11 keeping a space between an inner peripheral wall face 5a of the body barrel part 15 and themselves. A roughly plate-like impingement plate 45 demarcating the inner space in the axis L1 direction is disposed in the vapor barrel part 17, and the surface 45a of the impingement plate 45 facing the body barrel part 15 is tilted downward toward the discharge port 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a concentration apparatus used for concentration treatment of various processing solutions.

  Conventionally, various treatments such as fats and oils such as fatty acids, various beverage foods such as soups and juices, pharmaceuticals such as various vitamins and antibiotics, various synthetic resins such as polypropylene, petrochemical products such as various synthetic rubbers, waxes and detergents, etc. When performing the concentration process by heating and evaporating the liquid, a concentrator (rothotherm) provided with a heating means for heating the process liquid on the outer periphery of a substantially cylindrical drum into which the process liquid flows is used (for example, Patent Document 1). reference.).

In this type of concentrating device, the drum is arranged so that its axial direction is substantially horizontal, and a treatment liquid supply port is provided on one side (the drum body) of the axial direction and the other. A concentrated treatment liquid discharge port and a vapor discharge port are provided on the side (the drum body of the drum). Here, the supply port is attached above the drum in the vertical direction, and the discharge port is attached below the drum in the vertical direction.
That is, the processing liquid flows into the drum from the supply port, and the concentrated processing liquid flows out of the drum from the discharge port by its own weight.

The drum is provided with a rotating shaft that is rotatably supported by penetrating in the axial direction thereof, and a stirring blade that protrudes from the rotating shaft toward the inner peripheral wall surface of the drum. A minute gap is formed between the tip of the inner wall and the inner peripheral wall surface. Therefore, when the stirring blade is rotated, the processing liquid is pressed against the inner peripheral wall surface of the drum by the rotation of the stirring blade. The stirring blades are disposed only in the drum main body of the drum provided with the supply port, and are not disposed in the vapor drum of the drum provided with the discharge port and the exhaust port.
In this type of concentrator, since the processing liquid may be heat-treated in a vacuum state in the drum, a sealing material such as a mechanical seal or packing is provided on the shaft support portion of the rotating shaft with respect to the drum. Is sealed.
JP 2004-197989 A

  By the way, in the conventional concentrating device, since the stirring blades rotate at high speed in the drum, the processing liquid may overrun from the main body barrel and scatter to the vapor barrel. It will adhere to the inner peripheral wall surface of the trunk. The treatment liquid adhering thereto is directly heated by the heating means, so that the treatment liquid adheres and solidifies in the vapor barrel and grows. And when this deposit grows excessively, the discharge port will be blocked, or a trouble that prevents the stirring blade from rotating by contacting the rotating shaft will occur. Further, when deposits enter the shaft support portion of the rotating shaft, there is a problem that the degree of vacuum in the drum is lowered. The above-mentioned problem occurs particularly remarkably when handling a slurry-like or sludge-like treatment liquid.

  In view of the above circumstances, the present invention provides a concentrating device that prevents a deposit of the processing liquid from being generated in the vapor body even if the processing liquid scatters to the vapor body of the drum, and enables safe operation. The purpose is to do.

In order to solve the above problems, the present invention proposes the following means.
According to the first aspect of the present invention, an opening is provided in a substantially cylindrical drum which is arranged so that the axial direction is laterally oriented, and provided with heating means on the outer periphery, and a main body body which forms one side of the drum in the axial direction. A supply port for supplying the processing liquid into the main body barrel, and a drain opening for discharging the processing liquid concentrated by the heating means from the vapor barrel, which is opened at a lower portion of the vapor barrel forming the other side of the drum. An outlet, a rotating shaft that is rotatably supported by penetrating in the axial direction of the drum, and a stirring blade fixed to the rotating shaft with a gap between the inner peripheral wall surface of the main body barrel, and A substantially plate-like collision plate that divides the internal space of the vapor barrel portion in the axial direction is disposed on the vapor barrel portion, and the surface of the collision plate facing the main body barrel portion Is inclined downward toward the discharge port. To.

In the concentration apparatus according to the present invention, when the treatment liquid is concentrated, the treatment liquid is supplied from the supply port and the stirring blade integral with the rotating shaft is rotated while the inner peripheral wall surface of the drum is heated by the heating means. At this time, since the processing liquid is pressed against the inner peripheral wall surface of the main body by the stirring blade to form a thin film, the water is efficiently evaporated to adjust the water content of the processing liquid. At this time, the processing liquid gradually moves to the vapor barrel side, and the concentrated processing liquid is discharged from the outlet of the vapor barrel.
Then, the processing liquid scattered on the vapor barrel side collides with the surface of the collision plate. Here, since the surface of the collision plate is inclined downward toward the discharge port, the treatment liquid adhering to the collision plate can flow down toward the discharge port by its own weight.

  According to the second aspect of the present invention, an opening is provided in a substantially cylindrical drum which is arranged so that the axial direction is laterally provided and provided with heating means on the outer periphery, and a main body barrel portion which forms one side of the drum in the axial direction. A supply port for supplying the processing liquid into the main body barrel, and a drain opening for discharging the processing liquid concentrated by the heating means from the vapor barrel, which is opened at a lower portion of the vapor barrel forming the other side of the drum. An outlet, a rotating shaft that is rotatably supported by penetrating in the axial direction of the drum, and a stirring blade fixed to the rotating shaft with a gap between the inner peripheral wall surface of the main body barrel, and And an inclined flow lower portion inclined downward toward the discharge port is provided on an inner peripheral wall surface of the vapor barrel portion located at a lower portion of the vapor barrel portion. .

  According to the concentrating device according to the present invention, the treatment liquid splashed on the inner peripheral wall surface of the vapor barrel part flows down to the inner peripheral wall surface located at the lower part of the vapor barrel part due to its own weight, and an inclined flow lower part is provided here. Therefore, the treatment liquid that has flowed down here can flow down toward the discharge port.

  According to a third aspect of the present invention, in the concentrating device according to the first or second aspect, there is provided a cleaning means for cleaning the treatment liquid staying in the vapor barrel by spraying a cleaning liquid into the vapor barrel. It is characterized by being.

  According to the concentrating device of the present invention, the cleaning liquid is sprayed into the vapor body by the cleaning means, so that the processing liquid staying on the inner peripheral wall surface of the vapor body, the surface of the collision plate, and the inclined flow lower portion can be washed away. .

  According to the first and second aspects of the present invention, since the processing liquid scattered on the vapor barrel side can flow down to the discharge port, it is possible to prevent the deposition of the processing liquid in the vapor trunk portion. This enables safe operation of the concentrator.

  According to the third aspect of the present invention, since the processing liquid staying on the inner peripheral wall surface of the vapor barrel portion, the surface of the collision plate, or the inclined flow lower portion can be washed away by the cleaning liquid, deposits of the processing liquid are deposited in the vapor barrel portion. It can be surely prevented from occurring.

Hereinafter, the concentration apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, the concentrating device 1 of the present embodiment includes a substantially cylindrical drum 5 provided with heating means on the outer periphery, and bearings that are provided at both ends of the drum 5 through the drum 5 in the axis L1 direction. A rotating shaft 11 rotatably supported by the portions 7 and 9, and a plurality of stirring blades 13 fixed to the rotating shaft 11 with a minute gap between the inner peripheral wall surface 5 a of the drum 5. ing.
The drum 5 is disposed sideways so that the direction of the axis L1 is substantially horizontal, and one side (left side in FIG. 1) of the axis L1 direction forms the main body body 15, and the other side (FIG. 1). The right side of FIG. The main body barrel 15 is formed with a supply port 19 that opens into the main body barrel 15 and supplies the processing liquid into the main body barrel 15.

  Further, the vapor cylinder portion 17 is formed with a discharge port 21 through which the concentrated processing liquid opened and discharged from the vapor cylinder portion 17 and an exhaust port 23 through which the vapor of the processing liquid is discharged. . The discharge port 21 is opened at the lower portion of the vapor barrel portion 17, and the exhaust port 23 is opened at the upper portion of the vapor barrel portion 17. Further, the discharge port 21 is formed at a position adjacent to the end of the main body barrel 15, and the exhaust port 23 is formed at a position farther from the main body barrel 15 in the axis L <b> 1 direction than the discharge port 21. Yes.

The rotating shaft 11 is connected to the motor 27 via the transmission mechanism 25 and is rotated based on the driving force of the motor 27. The transmission mechanism 25 may be a conventionally known one. For example, as shown in the figure, a belt 33 is wound between a pulley 29 attached to the rotary shaft 11 and a pulley 31 attached to the drive shaft of the motor 27. It may be configured.
The bearing portions 7 and 9 that support the rotating shaft 11 can seal the inner space of the drum 5 from the outside by, for example, a mechanical seal. That is, in the concentrating device 1, the inside of the drum 5 can be evacuated.

The plurality of stirring blades 13 are each formed in a long plate shape, and are fixed to the rotating shaft 11 via an arm 35 protruding radially outward from the outer peripheral surface of the rotating shaft 11. Each stirring blade 13 has its longitudinal direction arranged along the direction of the axis L1 and is substantially equal to the dimension of the main body trunk 15 in the direction of the axis L1, that is, it is not arranged in the vapor trunk 17. .
In addition, the clearance gap between the stirring blade 13 and the inner peripheral wall surface 5a of the main body trunk | drum 15 is about 2 mm, and when rotating the rotating shaft 11, the stirring blade 13 is the above-mentioned between the inner peripheral wall surface 5a. The inner circumferential wall surface 5a is moved in the circumferential direction while maintaining the gap. The plurality of stirring blades 13 are arranged at equal intervals in the circumferential direction of the rotating shaft 11 (see FIG. 3).

  The heating means is constituted by a jacket 37 provided on the entire outer periphery of the drum 5 from the main body barrel 15 to the vapor barrel 17, and the jacket 37 is supplied with a heat medium such as high-temperature steam. An inlet 39 and a heat medium outlet 41 for discharging the heat medium are formed. That is, in the concentrator 1, the inner peripheral wall surface 5 a of the drum 5 is heated by the heat medium supplied from the heat medium inlet 39, and the heat medium deprived of heat by the drum 5 is discharged from the heat medium outlet 41. .

As shown in FIG. 2, a substantially plate-like collision plate 45 that divides the internal space in the direction of the axis L <b> 1 is disposed in the vapor body portion 17. The outer shape of the collision plate 45 is substantially elliptical so as to be disposed obliquely with respect to the axis L1. Further, the collision plate 45 is formed with a substantially elliptical through hole (not shown) through which the rotary shaft 11 is inserted, and is fixed to the vapor body 17 so that the collision plate 45 does not touch the rotary shaft 11. .
The front surface 45a of the collision plate 45 facing the main body body 15 side has an upper end facing the exhaust port 23, and the main body along the axis L1 direction as it goes downward toward the discharge port 21. It inclines so that it may approach the trunk | drum 15 side. In other words, the discharge port 21 and the exhaust port 23 are defined by the collision plate 45 and open to one space of the vapor body 17 facing the main body body 15, and are arranged at the end of the vapor body 17. The bearing portion 7 of the rotating shaft 11 is disposed adjacent to the other space.

As shown in FIGS. 2 and 3, cleaning means 47 for cleaning the processing liquid staying in the vapor cylinder portion 17 by spraying the cleaning liquid is provided in the vapor cylinder portion 17. Is composed of a first cleaning nozzle 49 disposed in one space of the vapor barrel portion 17 and a second cleaning nozzle 51 disposed in the other space of the vapor barrel portion 17.
The first cleaning nozzles 49 are suspended downward from the exhaust port 23 toward the inside of the vapor trunk portion 17, and are formed as a pair so as to sandwich the rotating shaft 11. Each first cleaning nozzle 49 is formed with a plurality of injection ports so that the cleaning liquid can be injected toward the inner peripheral wall surface 5 a of the vapor barrel portion 17 and the surface 45 a of the collision plate 45. The second cleaning nozzle 51 is provided at an end portion of the vapor barrel portion 17 and is configured to inject a cleaning liquid toward the inner peripheral wall surface 5 a of the vapor barrel portion 17 and the back surface 45 b of the collision plate 45. .
Note that the above-described cleaning liquid is made of, for example, water, oil, alcohol, or various solvents, and may be any cleaning liquid that can be easily washed out according to the type of the processing liquid.

The operation of the concentrating device 1 configured as described above will be described below.
When concentrating the processing liquid in the concentrating device 1, the processing liquid is supplied from the supply port 19 into the main body barrel 15 while the inner peripheral wall surface 5 a of the drum 5 is heated by the heating means, and the motor 27 is used. The stirring blade 13 integrated with the rotating shaft 11 is rotated. At this time, the processing liquid is pressed against the inner peripheral wall surface 5a of the main body barrel portion 15 by the stirring blade 13 to form a thin film, so that the water is efficiently evaporated to adjust the water content of the processing liquid.
At this time, the processing liquid gradually moves toward the vapor barrel portion 17, and the concentrated processing liquid is discharged from the discharge port 21 of the vapor barrel portion 17. Further, at this time, the vapor evaporated from the processing liquid is discharged to the outside of the drum 5 from the exhaust port 23 of the vapor barrel portion 17.

Further, the processing liquid that overruns from the main body body 15 and scatters toward the vapor body 17 side collides with the surface 45 a of the collision plate 45. Here, since the surface 45 a of the collision plate 45 is inclined downward toward the discharge port 21, the treatment liquid adhering to the collision plate 45 flows down on the surface 45 a of the collision plate 45 by its own weight, and the discharge port 21. Will be reached. As described above, since the scattered processing liquid collides with the collision plate 45, it does not reach the bearing portion 9 of the rotating shaft 11 disposed at the end of the vapor barrel portion 17.
Further, in this concentrating device 1, the vapor barrel portion is sprayed from the first washing nozzle or the second washing nozzle toward the inner peripheral wall surface 5 a of the vapor barrel portion 17 and the front surface 45 a and the back surface 45 b of the collision plate 45. The treatment liquid staying on the inner peripheral wall surface 5a of 17 and the front surface 45a and the back surface 45b of the collision plate 45 can be washed away.

As described above, according to the concentrating device 1 according to this embodiment, by providing the collision plate 45, the treatment liquid scattered on the vapor barrel portion 17 side can flow down to the discharge port 21. It is possible to prevent the deposits of the processing liquid from being generated in 17.
Further, since the collision plate 45 is disposed between the main body body portion 15 and the bearing portion 9, it is possible to reliably prevent the scattered processing liquid from reaching the bearing portion 9. Therefore, even if the inside of the drum 5 is in a vacuum state, the degree of vacuum can be prevented from decreasing.
Further, since the processing liquid staying on the inner peripheral wall surface 5a of the vapor barrel portion 17 and the front surface 45a and the back surface 45b of the collision plate 45 can be washed away by the cleaning liquid, deposits of the processing liquid are generated in the vapor barrel portion 17. Can be reliably prevented. Therefore, the safe operation of the concentrating device 1 becomes possible.

  Next, a second embodiment according to the present invention will be described with reference to FIG. The concentrating device according to the second embodiment is different from the concentrating device 1 according to the first embodiment in terms of the configuration of the vapor barrel portion 17. Here, only the structure of the vapor barrel portion will be described, and the same components as those of the concentrating device 1 of the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted.

  As shown in FIG. 4, the concentrating device 61 according to this embodiment has an inner peripheral wall surface 63 a positioned at the lower part of the vapor barrel portion 65 that constitutes the drum 63 together with the main body barrel portion 15, and is directed downward toward the discharge port 21. An inclined lower flow portion 67 is provided. More specifically, the inclined flow lower portion 67 is formed in a semicircular or U-shaped groove shape recessed from the inner peripheral wall surface 63 a of the vapor barrel portion 65 and communicates with the side portion of the discharge port 21. And is inclined downward toward the discharge port 21. That is, the bottom surface 67a of the inclined flow lower portion 67 is inclined downward from the other end portion of the vapor barrel portion 65 toward the discharge port 21 located on the one side.

  In the concentrating device 61, when the processing liquid scatters on the inner peripheral wall surface 63a or the end surface 63b of the vapor barrel 65 in the processing liquid concentration process, the processing liquid adhering to the inner peripheral wall surface 63a or the end surface 63b. The processing liquid flows down and flows down to the inner peripheral wall surface 63a located at the lower portion of the vapor barrel portion 65, and further flows into the inclined flow lower portion 67 provided at the lower portion of the vapor barrel portion 65. The inclined flow lower portion 67 has a bottom surface 67a inclined downward from the end of the vapor barrel portion 65 toward the discharge port 21, so that the processing liquid flows down on the bottom surface 67a and flows into the discharge port 21. Will be discharged.

According to the concentrating device 61 according to this embodiment, since the inclined lower portion 67 is provided, the treatment liquid scattered on the vapor barrel portion 65 side can be caused to flow down to the discharge port 21 as in the first embodiment. Further, it is possible to prevent the deposits of the processing liquid from being generated in the vapor body 65.
In addition, you may provide the washing | cleaning means 47 similar to 1st Embodiment in the concentration apparatus 61 of 2nd Embodiment mentioned above. In this case, the cleaning means 47 is preferably arranged so as to be injected into the inner peripheral wall surface 63 a and the end surface 63 b of the vapor barrel portion 65 and the inclined flow lower portion 67. Thereby, the processing liquid staying in the inner peripheral wall surface 63 a and the end surface 63 b of the vapor barrel portion 65 and the inclined flow lower portion 67 can be washed away.
Moreover, you may make it provide the collision board 45 of 1st Embodiment while providing the inclined flow lower part 67. FIG.

  In all the embodiments described above, the drum 5 is disposed so that the axis L1 direction thereof is substantially horizontal. However, the present invention is not limited thereto, and at least the axis L1 direction is disposed sideways. It only has to be done. That is, the drum 5 may be arranged obliquely so that the direction of the axis L1 is inclined. However, the degree of inclination of the drum 5 needs to be such that the surface 45 a of the collision plate 45 and the bottom surface 67 a of the inclined flow lower portion 67 can be inclined downward toward the discharge port 21.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

It is a sectional side view which shows the outline of the concentration apparatus which concerns on 1st Embodiment of this invention. FIG. 2 is an enlarged side cross-sectional view showing a vapor barrel part of a drum in the concentration apparatus of FIG. 1. It is AA arrow sectional drawing of FIG. In the concentration apparatus which concerns on 2nd Embodiment of this invention, it is an expanded sectional side view which shows the vapor trunk | drum part of a drum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,61 Concentrator 5,63 Drum 5a, 63a Inner peripheral wall surface 11 Rotating shaft 13 Stirrer blade 15 Main body trunk | drum 17, 65 Vapor trunk | drum 19 Supply port 21 Discharge port 37 Jacket (heating means)
45 Collision plate 45a Surface 47 Cleaning means 67 Inclined flow lower part L1 axis

Claims (3)

A substantially cylindrical drum that is arranged so that the axial direction is lateral, and provided with heating means on the outer periphery;
A supply port that opens to a main body barrel that forms one side in the axial direction of the drum and supplies a processing liquid into the main body barrel;
A discharge port that opens to a lower portion of the vapor barrel portion that forms the other side of the drum and discharges the processing liquid concentrated by the heating means from the vapor barrel portion;
Concentration comprising: a rotating shaft that is rotatably supported by penetrating in the axial direction of the drum; and a stirring blade fixed to the rotating shaft with a gap between the inner peripheral wall surface of the main body barrel A device,
A substantially plate-shaped collision plate that divides the internal space of the vapor barrel portion in the axial direction is disposed on the vapor barrel portion,
The concentrating device, wherein a surface of the collision plate facing the main body body portion is inclined downward toward the discharge port. A substantially cylindrical drum that is arranged so that the axial direction is lateral, and provided with heating means on the outer periphery;
A supply port that opens to a main body barrel that forms one side in the axial direction of the drum and supplies a processing liquid into the main body barrel;
A discharge port that opens to a lower portion of the vapor barrel portion that forms the other side of the drum and discharges the processing liquid concentrated by the heating means from the vapor barrel portion;
Concentration comprising: a rotating shaft that is rotatably supported by penetrating in the axial direction of the drum; and a stirring blade fixed to the rotating shaft with a gap between the inner peripheral wall surface of the main body barrel A device,
A concentrating device, wherein an inclined flow lower portion inclined downward toward the discharge port is provided on an inner peripheral wall surface of the vapor barrel portion located at a lower portion of the vapor barrel portion. 3. The concentration apparatus according to claim 1, further comprising a cleaning unit that sprays a cleaning liquid into the vapor body and cleans the treatment liquid staying in the vapor body.

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