JP6429270B2 - Horizontal centrifugal thin film evaporator - Google Patents

Description

  The present invention relates to a centrifugal thin film evaporation device used for evaporating and concentrating liquid components contained in a raw material liquid, and more particularly to a horizontal centrifugal thin film evaporation device having a horizontal cylindrical tank body. .

  Conventionally, in order to evaporate and concentrate liquid components contained in raw material liquids such as food and chemicals, the raw material liquid is supplied from a supply port 11 provided on one end side of a cylindrical tank body 1 as shown in FIG. M0 is supplied and a liquid film is formed along the heated inner wall of the tank body 1 by the stirring blade 3 attached to the rotating shaft 2 to evaporate the liquid component contained in the raw material liquid M0. In addition, a centrifugal thin film evaporation apparatus that discharges the concentrated material M and the vapor M1 of the evaporated liquid component from the discharge port 12 and the exhaust port 13 provided on the other end side of the tank body 1 is widely used. (For example, refer to Patent Documents 1 to 3.)

  By the way, as this kind of centrifugal thin film evaporator, a horizontal centrifugal thin film evaporator having a horizontal cylindrical tank body 1 (as shown in FIG. 6) as disclosed in Patent Documents 1 and 2, Although there is a vertical centrifugal thin film evaporator (not shown) provided with a vertical cylindrical tank body as disclosed in Patent Document 3, in any case, the centrifugal thin film evaporator is a tank body 1. In order to increase the evaporation area and heat transfer efficiency by reducing the thickness of the liquid film formed along the heated inner wall, and to concentrate the raw material liquid in a short time, the clearance between the inner wall of the tank body and the outer edge of the stirring blade is 1 It was necessary to set the dimensions to about several mm and with high accuracy.

  For this reason, in particular, in the horizontal centrifugal thin film evaporator as shown in FIG. 6, the rotating shaft 2 to which the stirring blade 3 is attached is easily bent due to the influence of gravity or stirring force. 1. The front and rear end plate members 5 and 6 that are detachably attached to 1 adopt a structure that supports both ends via bearings 51 and 61 and shaft sealing portions 52 and 62, respectively, so that the rotating shaft 2 is not easily bent. I was doing.

Japanese Utility Model Publication No. 43-32212 Japanese Patent Laid-Open No. 2007-23 Japanese Patent Laid-Open No. 2000-24402

  As described above, in the conventional horizontal centrifugal thin film evaporator, the rotary shaft 2 is attached to both the front and rear end plate members 5 and 6 that are detachably attached to the tank body 1, and the bearings 51 and 61 and the shaft seal portions 52 and 62, respectively. In order to clean the inside of the tank body 1, particularly to remove the rotating shaft 2 to which the agitating blade 3 is attached and perform cleaning, a bearing 51, Since it is necessary to disassemble the end plate members 5 and 6 from the tank body 1 after disassembling 61, a large amount of work is required, and the rotation shaft to which the stirring blade is attached is substantially removed. Since it is difficult to clean, it has been difficult to employ one apparatus for manufacturing various products, or in a technical field that is extremely unfavorable for contamination such as fine chemicals and pharmaceuticals.

  In view of the problems of the conventional horizontal centrifugal thin film evaporator described above, the present invention provides a horizontal centrifugal thin film that can be easily cleaned by removing a rotating shaft to which a stirring blade is attached, thereby eliminating restrictions on applications. An object is to provide an evaporation apparatus.

In order to achieve the above object, the horizontal centrifugal thin film evaporator of the present invention supplies a raw material liquid from a supply port provided on one end side of a horizontal cylindrical tank body, and attaches the raw material liquid to a rotating shaft. A liquid film is formed along the heated inner wall of the tank body by the stirring blade to evaporate and concentrate the liquid component contained in the raw material liquid, and from the discharge port and the exhaust port provided on the other end side of the tank body, In the horizontal centrifugal thin film evaporator, wherein the concentrated material and the vapor of the evaporated liquid component are respectively discharged, the rotating shaft attached with the stirring blade is supported by one end plate member that is detachably attached to the tank body. and was supported in a cantilever manner via the shaft seal unit, an electric motor to a rotating shaft which has led to the opposite side of the tank body of the one end plate member, the axis of the electric motor is Ri Do in the vertical direction and the electric motor distribution was set to a suspended state to so that you positioned below the rotation axis Connect, one end plate member said, through the support guide member consisting of linear bearing mechanism disposed on the gantry and disposed to be moved in the axial direction of the rotation axis with respect to the tank body on cradle It is characterized by that.

  In this case, the other end plate member can be disposed on the tank body through a hinge so as to be opened and closed, and a viewing window can be provided on the end plate member.

In addition, the tank body can be disposed on the gantry and the gantry can be moved.

According to the horizontal centrifugal thin film evaporator of the present invention, the rotating shaft to which the stirring blade is attached is supported by one end plate member detachably attached to the tank body via a bearing, and the one end plate is supported. When the inside of the tank body is cleaned by arranging the member so as to be able to advance and retract with respect to the tank body in the axial direction of the rotation axis via the support guide member, the rotation shaft to which the stirring blade is attached. With the one end plate member attached to one end plate member, the stirring blade is moved backward with respect to the tank body in the axial direction of the rotating shaft via the support guide member, so that the stirring blades are attached to the inner wall of the tank body, etc. Can be easily removed from the tank body without touching.
As a result, the internal cleaning of the tank body can be ensured without contamination, and the horizontal centrifugal thin film evaporator can be used for the production of a wide variety of products. Such a technology can be applied to a technical field that extremely dislikes contamination.

  This also eliminates the need to provide a bearing on the other end plate member as in the conventional horizontal centrifugal thin film evaporator, so that the other end plate member can be opened and closed on the tank body via a hinge. In addition, a viewing window can be provided on the end plate member, and the operability and usability of the apparatus can be improved.

  In addition, the support guide member that supports the tank body and one end plate member is disposed on the gantry, and the gantry is movable, thereby improving the mobility of the apparatus and improving the layout of the equipment. Changes can be made easily.

It is a general view which shows one Example of the horizontal type | mold centrifugal thin film evaporator of this invention. It is the left side view. It is the same right view. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. The conventional horizontal centrifugal thin film evaporator is shown, (a) is a general view, (b) is a CC cross-sectional view of (a).

  Embodiments of a horizontal centrifugal thin film evaporator according to the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of a horizontal centrifugal thin film evaporator according to the present invention.
This horizontal centrifugal thin film evaporator supplies a raw material liquid M0 from a supply port 11 provided on one end side of a horizontal cylindrical tank body 1, and this raw material liquid M0 is supplied by a stirring blade 3 attached to a rotary shaft 2. A liquid film is formed along the heated inner wall of the tank body 1 to evaporate and concentrate the liquid component contained in the raw material liquid M0, and the discharge port 12 and the exhaust port 13 provided on the other end side of the tank body 1. The concentrated material M and the vaporized liquid component vapor M1 are respectively discharged.

  Then, the rotating shaft 2 to which the stirring blade 3 is attached is supported by one end plate member 5 detachably attached to the tank body 1 through a bearing 51 and a shaft sealing portion 52, and this one end plate is supported. The member 5 is disposed so as to be capable of advancing and retracting with respect to the tank body 1 in the axial direction of the rotary shaft 2 via the support guide member 8.

  In this case, the inner wall of the tank body 1 and the outer edge of the stirring blade 3 are against the liquid film formed along the inner wall of the tank body 1, and the back pressure (reverse liquid film) due to the centrifugal force generated by the rotation of the stirring blade 3. In order to adjust the residence time of the raw material liquid M0 from the supply port 11 toward the discharge port 12, with respect to the central axis of the rotary shaft 2. The taper angle is 1 ° to 5 °, and in the present embodiment, it is formed so as to be inclined in the direction of diameter reduction so as to be about 2 °.

  In the embodiment, the clearance between the inner wall of the tank body 1 and the outer edge of the stirring blade 3 is set to a dimension of about 1 to several mm.

  In order to heat the inner wall of the tank body 1, a jacket 4 is formed on the outer peripheral side of the tank body 1, and a heat medium S such as steam is heated in a space formed between the tank body 1 and the jacket 4. The liquid is supplied from the medium supply port 41 and discharged from the heat medium discharge port 42.

  The exhaust port 13 for discharging the vapor M1 of the evaporated liquid component facilitates the evaporation of the liquid component contained in the raw material liquid M0 by allowing the inside of the tank body 1 to be depressurized by a suction pressure reducing device (not shown). In addition to heating the inner wall of the tank body 1, it is possible to obtain a material M that is highly concentrated in a short time, for example, several times to several tens of times, specifically, about 20 times concentrated. I have to.

  A general-purpose bearing can be used as the bearing 51 that supports the rotating shaft 2 in a cantilever manner on one end plate member 5 that is detachably attached to the tank body 1. Supports the cantilever with the clearance between the inner wall of the tank body 1 and the outer edge of the stirring blade 3 constant without bending the rotary shaft 2 rotated several hundreds of revolutions / minute due to the influence of gravity and stirring force. It is necessary to use what can be done.

  The shaft seal portion 52 between the one end plate member 5 and the rotary shaft 2 is a non-contact type such as an oil groove seal, a labyrinth seal, a gas seal, or a contact type using a seal member that is in sliding contact with the rotary shaft 2. A general-purpose shaft sealing mechanism can be used alone or in combination.

  The connecting mechanism between the tank body 1 and one end plate member 5 can be a general-purpose connecting mechanism used for connecting flanges or the like. A clutch ring mechanism capable of performing the above is used.

In addition to the linear motion bearing mechanism 81 used in this embodiment, the end guide member 5 for disposing the end plate member 5 in the axial direction of the rotating shaft 2 so as to be movable back and forth with respect to the tank body 1 is also used. , Rail / wheel mechanisms, and other general-purpose support guide mechanisms can be used.
In this embodiment, the operator performs the forward / backward operation of the one end plate member 5, but an arbitrary drive mechanism such as an electric motor or a cylinder may be provided.

In this way, by supporting the rotary shaft 2 in a cantilever manner on one end plate member 5 that is detachably attached to the tank body 1, the other end plate member 6 has a conventional horizontal centrifugal. Since there is no need to provide a bearing as in the thin film evaporator, the other end plate member 6 is disposed on the tank body 1 through a hinge 64 so as to be opened and closed, and the other end plate member 6 has a viewing window. 65 is provided.
In addition, the general-purpose connection mechanism used for the connection of flanges, etc. can be used for the connection mechanism 63 of the tank main body 1 and the other end plate member 6.
Thereby, the operability and usability of the apparatus can be improved.

A support guide member 8 that supports the tank body 1 and one end plate member 5 is disposed on a gantry 9, and the gantry 9 can be moved selectively using a grounding member 91 and casters 92. I try to make it.
Thereby, the mobility of the apparatus is improved, and the layout of the equipment can be easily changed.

Next, an operation method of the horizontal centrifugal thin film evaporator will be described.
(1) The heating medium S such as steam is supplied to the space formed between the tank body 1 and the jacket 4 from the heating medium supply port 41 and discharged from the heating medium discharge port 42, thereby Heat the interior.
(2) The inside of the tank body 1 is depressurized by exhausting air from the exhaust port 13 provided on the other end side of the tank body 1 by a suction pressure reducing device (not shown).
(3) One end side of the tank body 1 while rotating the stirring blade 3 while keeping the clearance between the inner wall of the tank body 1 and the outer edge of the stirring blade 3 constant by rotating the rotating shaft 2 at high speed by the electric motor 7. The raw material liquid M0 is supplied from the supply port 11 provided in the container, and the liquid liquid contained in the raw material liquid M0 is formed by forming a liquid film along the heated inner wall of the tank body 1 with the stirring blade 3 from the raw material liquid M0. Evaporate continuously and concentrate.
(4) The concentrated material M is discharged from the discharge port 12 provided on the other end side of the tank body 1.
(5) The vapor M1 of the evaporated liquid component is discharged by exhausting from the exhaust port 13 provided on the other end side of the tank body 1 by a suction pressure reducing device (not shown).

In this horizontal centrifugal thin film evaporator, the rotating shaft 2 to which the agitating blade 3 is attached is cantilevered via a bearing 51 and a shaft seal 52 on one end plate member 5 that is detachably attached to the tank body 1. By supporting the one end plate member 5 via the support guide member 8 so as to be movable forward and backward with respect to the tank body 1 in the axial direction of the rotary shaft 2, When cleaning is performed, the rotating shaft 2 to which the stirring blade 3 is attached is attached to the one end plate member 5, and the axial direction of the rotating shaft 2 through the support guide member 8 together with the one end plate member 5. The stirring blade 3 can be easily detached from the tank body 1 without contacting the inner wall of the tank body 1 or the like.
Thereby, the cleaning of the inside of the tank body 1 can be ensured without contamination, and the horizontal centrifugal thin film evaporator can be used for manufacturing a variety of products, It can also be applied to technical fields that are extremely disliked by contamination such as pharmaceuticals.

  The horizontal centrifugal thin film evaporation apparatus of the present invention has been described based on the embodiments thereof. However, the present invention is not limited to the configurations described in the above embodiments, and the configurations thereof are appropriately set within the scope not departing from the gist thereof. Can be changed.

  The horizontal centrifugal thin film evaporator according to the present invention can be easily cleaned by removing the rotating shaft to which the stirring blades are attached. Is used for the manufacture of various products, and in technical fields such as fine chemicals and pharmaceuticals that are extremely hated by contamination, and in technical fields such as food and chemicals, the liquid components contained in the raw material liquid are evaporated and concentrated. Can be widely used for the purpose.

DESCRIPTION OF SYMBOLS 1 Tank main body 11 Supply port 12 Discharge port 13 Exhaust port 2 Rotating shaft 3 Stirring blade 4 Jacket 5 End plate member 51 Bearing 52 Shaft sealing part 6 End plate member 64 Hinge 65 Viewing window 7 Electric motor 8 Support guide member 9 Base 91 Grounding member 92 Caster M0 Raw material liquid M Concentrated material M1 Vapor

Claims (3)

A raw material liquid is supplied from a supply port provided at one end of a horizontal cylindrical tank body, and a liquid film is formed along the heated inner wall of the tank body by a stirring blade attached to the rotating shaft. The liquid component contained in the raw material liquid is evaporated and concentrated, and the concentrated material and the vapor of the evaporated liquid component are discharged from the discharge port and the exhaust port provided on the other end side of the tank body, respectively. In the horizontal centrifugal thin film evaporator, the rotating shaft to which the agitating blade is attached is supported by one end plate member detachably attached to the tank body via a bearing and a shaft seal portion, and one end plate an electric motor to a rotating shaft which has led to the opposite side of the tank body member, Ri Do the axis vertical electric motor, and electric motor are disposed in a suspended state to so that you positioned below the rotation axis connect Te, linear bearing machines one end plate member said, is disposed on the frame Through the support guide member consisting of a horizontal centrifugal thin film evaporator, characterized in that arranged to be moved in the axial direction of the rotation axis with respect to the tank body on the stand. 2. The horizontal centrifugal thin film evaporator according to claim 1, wherein the other end plate member is disposed on the tank body so as to be openable and closable via a hinge, and a viewing window is provided on the end plate member. The horizontal centrifugal thin film evaporator according to claim 1 or 2 , wherein a tank main body is disposed on the frame and the frame is movable.

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