JPH0622422Y2 - Stirrer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a stirring device having a heat transfer surface built-in type.

<Prior Art> As a stirring device for heating or cooling a stirring raw material that has been conventionally used, for example, as shown in FIG. 7, a simple stirring blade is provided in a tank main body a into which the stirring raw material is charged. A structure in which a rotary shaft c provided with b is disposed and a jacket type or coil type heat transfer body d for guiding a heat medium is wound around the outer peripheral surface of the tank body a, or JP-A-60- As disclosed in Japanese Patent No. 14929, there has been proposed a structure in which a hollow stirring blade is attached to a rotary shaft having a double pipe path and a heat medium for heating and cooling is circulated.

<Problems to be Solved by the Invention> However, in the structure in which the heat transfer body d is superposed on the outer circumference of the tank body a in this way, the heat of the heating medium for heating or cooling flowing into the heat transfer body d is directly Since the heat is indirectly transferred without being transferred to the stirring raw material filled in the tank main body a, there are disadvantages that the thermal efficiency is extremely poor, the product is insufficiently stirred, and the processing time is long. Further, the structure in which the hollow stirring blade is attached to the rotary shaft having the double pipe line has better thermal efficiency than the former, but the surface area of the stirring blade is limited,
It involves a problem that it takes a long processing time and that the apparatus becomes large because a large number of stirring blades must be provided.

In view of the above situation, the present invention solves the above problems by providing an integral combination structure of a stirring blade and a heat transfer member inside the tank body, and increasing the surface area of the stirring blade to increase the heat transfer coefficient. The object is to provide a stirring device that solves the problem.

<Means for Solving the Problems> The present invention has a double hollow shaft for rotatably circulating a heat medium for heating or cooling, which is rotatably arranged in the center of a tank main body for feeding a stirring raw material. On the outer circumference of the outer cylinder hollow shaft,
Providing a hollow bellows blade for heat transfer and stirring that guides the heat medium,
In addition, in the stirring device in which the baffle is attached to the inner wall side of the tank main body, the bellows surface of the hollow bellows blade for heat transfer and stirring has a corrugated conical surface or a straight conical surface provided with a plurality of fins.

<Operation> Due to the above-mentioned configuration, the stirring raw material charged into the tank main body is stirred by the heat transfer and stirring hollow bellows blade body rotating in the tank main body, and The stirring raw material itself is heated and cooled by heat transfer by a heating or cooling heat medium that flows into the hollow stirring bellows blade body. In this case, since the bellows surface of the hollow blade for heat transfer / stirring is formed by projecting a plurality of fins on the corrugated conical surface or the straight conical surface, the heat transfer surface by the heat medium for heating or cooling can be wide. Good heating, cooling efficiency. The introduction of the heat medium into the hollow bellows blade for heat transfer and agitation is introduced from a rotary joint provided at the proximal end of the hollow shaft, and the discharge recirculation returns from the hollow cylinder part of the outer cylinder to the rotary joint via the hollow shaft of the inner cylinder. It becomes like this.

<Embodiment> The present invention is described below with reference to the drawings of the embodiments.

1 to 3 show a case where the bellows surface of the hollow bellows blade body is corrugated, and 1 is a stirring tank main body which is a vertical polyhedron,
At the center of the tank body 1, a rotary joint 2 is attached to the upper end, and a concentric double hollow shaft 4 for heat medium circulation, which has a lower end bearing 3, is inserted and disposed, and of these, an outer cylinder hollow shaft portion 4a A hollow bellows blade body 5 for heat transfer and agitation, which is provided with bellows chambers 5a that are respectively inserted through the outer circumference, is formed in a projecting manner, and an inflow hole 6 is formed in an outer cylinder hollow shaft portion 4a at an upper end position of the hollow bellows blade body 5. The outer cylinder hollow shaft portion 4a at the lower end portion is pierced to form the outflow hole 7 so as to guide the heat medium, and the inner cylinder hollow portion 4a is separated from the lower end bottom portion of the outer cylinder hollow shaft portion 4a by a predetermined gap l. Axis 4
The lower end return port 8 of b is faced, and the baffle 9 is projected on the inner wall surface of the tank body 1 to form a stirring device 10 having a heat transfer surface as a whole. In this case, the hollow bellows blade body 5 for heat transfer and stirring has a plurality of bellows (four in the figure).
This single bellows surface (heat transfer surface)
Has a corrugated conical surface 11. The bellows surface may have a configuration in which a plurality of curving fins 13 are projected on a straight conical surface 12 having an abacus bead shape as shown in FIGS. 4 to 6. Reference numeral 14 is a steady rest that is passed between the outer cylindrical hollow shaft portion 4a and the inner cylindrical hollow shaft portion 4b, and 19 is a bearing.
20 shows the ground respectively.

Next, this operation will be described. At the time of appropriately stirring the stirring raw material, first, a predetermined amount of the stirring raw material A is charged from the charging port 15 provided in the shoulder portion of the tank body 1. On the other hand, the heating medium B for heating or cooling filled in the hollow bellows blade body 5 is appropriately supplied to a known rotary joint 2 at the base end of the hollow shaft 4 located outside the tank body 1 (not shown). ), And flows into the outer cylinder hollow shaft portion 4a of the hollow shaft 4, and the inflow hole 6
After that, the bellows chambers 5a communicating with the hollow bellows blade body 5 are filled. The flow of the heat medium B in the hollow bellows vane body 5 flows from the outflow hole 7 at the lower end of the outer cylindrical hollow shaft portion 4a to the bellows chamber 5, respectively.
It is constituted by a circulation path that passes through a and returns to the rotary joint 2 via the lower end return port 8 of the inner hollow cylindrical shaft portion 4b.

Here, when the driving pulley 16 mounted on the outer periphery of the upper portion of the hollow shaft 4 is rotated by the drive of the motor 17, the hollow bellows blade body 5 integrated with the outer cylindrical hollow shaft portion 4a is rotated, and each corrugated conical surface is rotated. 11 or straight conical surface 12 with fins 13 protruding
The stirring raw material A is efficiently stirred by the blade resistance of, and the heat transfer surface to which the heat of the heat medium B filled inside is directly transferred by the corrugated conical surface 11 or the straight conical surface 12 itself provided with the fins 13 Therefore, the stirring raw material A can be directly heated or cooled.

Further, at this time, a part of the stirring raw material A stirred by the hollow bellows blade body 5 abuts the baffle 9 projecting on the inner wall of the tank body 1 at the peripheral edge, and is subjected to the action of reversing or reversing. , Mixing is performed, and a good quality stirring product is obtained in a short time. Thus, the heated or cooled material is discharged from the discharge port 18.

<Effects of the Invention> As described above, in the stirring device of the present invention, the stirring blades arranged in the tank body are hollow bellows blades for heat transfer and stirring that guide the heat medium from the rotating shaft side, and the stirring blades are arranged in a plurality of rows. Since the bellows have a structure in which the bellows surface is corrugated or the fins are projected, the stirring raw material put into the tank main body can be forcibly stirred by being contacted with the baffle on the wall surface in the tank main body and can be hollow. Since the surface of the bellows blade is a heat transfer surface due to the heating or cooling heat medium flowing into the inside, the stirring raw material is directly heated or cooled, and the heat transfer coefficient can be made high, and the stirring tank,
Most suitable for use in reaction tanks, aging tanks, evaporation cans, drying cans, cooling cans, etc. Moreover, this rotating shaft has a double pipe structure,
The outer cylinder hollow shaft part is the inflow side, and the inner cylinder hollow shaft part communicating with the lower end is the circulation path structure, so that an efficient heat medium flow is obtained and the hollow bellows with the axial direction as the longitudinal direction. A new heat medium is constantly introduced into the bellows chamber of the blade body, and from this point, the heat transfer effect can be enhanced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention in which the hollow bellows blade body is corrugated, FIG. 2 is the same plan view, FIG. 3 is a side view of the bellows surface, and FIG. 4 is a hollow bellows blade body. FIG. 5 is a sectional view of another embodiment in which fins are projected, FIG. 5 is a plan view thereof, FIG. 6 is a side view of the same bellows surface, and FIG. 7 is a sectional view of a conventional stirring device. 1 ... Tank body 2 ... Rotary joint 4 ... Hollow shaft 4a ... Outer cylinder hollow shaft part 4b ... Inner cylinder hollow shaft part 5 ... Heat transfer and stirring hollow bellows blade body 6 ... Inflow hole 7 ... Outflow hole 8 Return port 9 Baffle 11 Corrugated conical surface 12 Straight conical surface 13 Fin

Claims (2)

[Scope of utility model registration request] 1. A center of a tank main body for feeding a stirring raw material,
A double hollow shaft that circulates a heating or cooling heat medium is rotatably arranged, and a heat transfer and stirring hollow bellows blade body that guides the heat medium is provided on the outer periphery of the outer cylinder hollow shaft portion. A stirrer provided with a baffle on the inner wall side of the tank body, wherein the bellows surface of the hollow bellows blade for heat transfer and stirring is formed into a corrugated conical surface. 2. A bellows surface of a hollow bellows blade body for heat transfer and stirring,
The stirring device according to claim 1, wherein a plurality of fins are provided so as to project on the straight conical surface.