JPH0641831U - Stirrer - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent liquid from accumulating on the upper side of the commutation plate and causing insufficient stirring. [Composition] The commutation plate 22 of the stirrer 21 is formed in a partially spherical shape in which the outer peripheral edge portion projects toward the liquid surface rather than the central portion, and the outer peripheral edge portion has a height before and after contact with the liquid surface. As described above, the stator rod 10 is attached via the set screw 23. The liquid raw material L is indicated by an arrow A by stirring by the turbine 9 and the stator 11.
Even if an upward flow in the direction occurs and this flow collides with the lower surface side of the commutation plate 22, this flow rises at the center along the concave curved surface of the commutation plate 22, and the outer peripheral edge portion of the commutation plate 22. The liquid raw material L can be prevented from staying in the emulsification tank 1, and the liquid raw material L can be prevented from accumulating in the emulsification tank 1 because the liquid material L flows in the emulsification tank 1 from the center to the outside to form a constant gradient. It is possible to circulate completely and to perform uniform stirring.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stirrer suitable for use in producing an emulsion such as cosmetics, chemicals, foods, etc. by stirring and mixing liquid raw materials such as water, oils and fats, sizing agents or pigments.

[0002]

[Prior art]

 FIG. 3 shows a vacuum emulsification device as an example of a stirring device according to the prior art.

In the figure, reference numeral 1 denotes an emulsification tank as a stirring tank, and the emulsification tank 1 is composed of a tank main body 2 and a lid 3 for covering the tank main body 2 from above. Here, the tank main body 2 is formed in a bottomed circular cylinder shape having a cylindrical body portion 2A and an arc-shaped bottom portion 2B closing the lower end side of the body portion 2A, and an opening at the upper end side of the body portion 2A. An annular flange portion 2D is formed on the portion 2C so as to project radially outward. Further, a pipe fitting hole 2E is formed in the bottom portion 2B of the tank main body 2 and a sampling pipe 4 having a cock 4A is fitted in the pipe fitting hole 2E, and the cock 4A of the sampling pipe 4 is fitted. The contents of the emulsification tank 1 are removed by opening the.

On the other hand, a motor mounting hole 3A is formed in the center of the lid body 3, and four screw insertion holes 3B, 3B, ... (At a position spaced radially outward from the motor mounting hole 3A. Only two are shown). Further, one pipe fitting hole 3C is formed on the outer peripheral side of the lid body 3, and an exhaust pipe 14 described later is fitted in the pipe fitting hole 3C. The lid body 3 is fixed to the flange portion 2D of the tank body 2 by a fastening means (not shown) such as a fastening lever.

Reference numeral 5 denotes a stirring device, which is composed of an electric motor 6, a turbine 9 and a stator 11 which will be described later, and the stirring device 5 is attached to the lid 3 and the lid 3 serves as a tank. The turbine 9, the stator 11 and the like are inserted into the emulsification tank 1 when the main body 2 is covered.

Reference numeral 6 denotes an electric motor as a motor. The electric motor 6 is composed of a motor body 6A and a motor base 6B. Inside the motor base 6B, the motor main body is connected via coupling, bearing, etc. A rotating shaft 6A (none of which is shown) is connected to a turbine shaft 8 described later. An annular flange portion 6C is formed on the lower end side of the motor base 6B, and the flange portion 6C is provided with, for example, four screw insertion holes (not shown). Then, male screw portions 10A of stator rods 10 to be described later are inserted from the lower side into the respective screw insertion holes of the flange portion 6C through the screw insertion holes 3B, 3B, ... By tightening each nut 7 on 10A, the electric motor 6 is fixed on the lid 3 together with each stator rod 10.

Reference numeral 8 denotes a turbine shaft, which is axially hung from the electric motor 6 into the emulsification tank 1, and a turbine 9 which rotates integrally with the turbine shaft 8 is provided at a lower end of the turbine shaft 8. Installed.

Here, the turbine 9 has a boss portion 9A having a substantially truncated cone shape attached to the turbine shaft 8 and a boss portion 9A that protrudes radially outward and inclines downward from the bottom surface of the boss portion 9A at predetermined intervals in the circumferential direction. It is composed of spaced parallelogrammic blades 9B, 9B, .... When the turbine 9 is driven to rotate by the turbine shaft 8, the turbine 9 together with the stator 11 causes an upward flow in the direction of arrow A in the liquid raw material L in the emulsification tank 1.

Reference numerals 10, 10, ... Denote stator rods, and each stator rod 10 is made of, for example, a high-strength metal rod such as stainless steel. The upper end side of each stator rod 10 has a male screw portion 10A and a lower end portion. Male screw portions 10B are formed on the respective sides. Then, in each stator rod 10, the male screw portion 10B on the lower end side is screwed into the screw hole on the upper side of the stator 11, and the male screw portion 10A on the upper end side is inserted into the screw insertion hole provided in the flange portion 6C of the motor base 6B. Then, by tightening the nut 7, the electric motor 6 hangs from the electric motor 6 substantially parallel to the turbine shaft 8, for example, four, and the stator 11 is positioned around the turbine 9.

Reference numeral 11 denotes a stator. The stator 11 is formed in a tubular shape, and has a stator main body 11A having four screw holes formed on the upper side, and an axially intermediate portion from the upper end side central portion of the stator main body 11A. A small-diameter cylindrical bearing portion 11B that extends coaxially up to and through which the turbine shaft 8 is inserted, and connecting portions 11C, 11C, ... (2 pieces) that connect the bearing portion 11B and the stator body 11A at a plurality of points. And a plurality of substantially elliptical discharge holes 11D penetrating in the axial direction are formed between the respective connecting portions 11C.

Reference numeral 12 denotes a commutation plate. The commutation plate 12 is composed of a commutation plate main body 12A formed in a disk shape having a diameter larger than that of the stator 11, and the commutation plate main body 12A is provided at the center thereof. A shaft insertion hole 12B through which the turbine shaft 8 is inserted is formed, and four rod insertion holes 12C and 12C (only two are shown) are formed so as to surround the shaft insertion hole 12B. Further, the commutation plate body 12A is provided with a cylindrical bearing portion 12D protruding above the shaft insertion hole 12B, and three short boss portions 12E, 12E are provided above the rod insertion holes 12C, 12C, .... (Only one is shown) and one long boss portion 12F is formed to project, and one screw hole 12G is formed in the radial direction in the side surface middle portion of the boss portion 12F. The commutation plate 12 is inserted through the turbine shaft 8 into the central shaft insertion hole 12B, and the stator rod 10 is inserted into each rod insertion hole 12C so that the stator rod 10 can move in the axial direction. The set screw 13 is attached to the long boss portion 12F, and the set screw 13 is inserted and tightened in the screw hole 12G so as to be positioned and fixed at an intermediate portion of the stator rod 10.

Reference numeral 14 denotes an exhaust pipe fitted in the pipe fitting hole 3C of the lid body 3, and the tip end side of the exhaust pipe 14 is connected to a vacuum pump (not shown), and through the exhaust pipe 14. The inside of the emulsification tank 1 is depressurized by sucking the air in the emulsification tank 1 to prevent air from being mixed into the liquid raw material L such as the emulsified liquid as much as possible.

As described above, the vacuum-type emulsifying apparatus according to the prior art is configured by assembling the stirring device 5 in the emulsifying tank 1, and when the emulsified liquid is produced from the liquid raw material L using the vacuum-type emulsifying apparatus. First, the liquid raw material L is put into the emulsification tank 1, and the commutation plate 12 of the stirring device 5 is moved in the axial direction of the stator rod 10 so as to match the height of the liquid surface of the liquid raw material L. Fix with set screw 13.

Then, the air in the emulsification tank 1 is exhausted by the vacuum pump through the exhaust pipe 14, and the electric motor 6 of the agitator 5 is supplied with electric power to rotate the turbine 9 at a high speed. A pressure difference occurs between the upper part and the upper part, and the liquid raw material L is sucked upward from the bottom part side of the stator 11. At this time, each connecting portion 11C of the stator 11 regulates the flow of the liquid raw material L 1 in the rotational direction of the turbine 9, while applying a shearing force or the like to the liquid raw material L between the turbine 9 and the stator 11. Create a flow. As a result, the liquid material L is discharged with a vigorous agitation from the discharge holes 11D, 11D, ... Of the stator 11 in the upward direction of the arrow A. On the other hand, the commutation plate 12 receives the upward flow in the direction of arrow A discharged from the respective discharge holes 11D of the stator 11 on the lower surface side, and diverts the liquid raw material L into the downward flow in the direction of arrow B. Let it flow. In this way, the liquid material L circulates in the emulsification tank 1 between the turbine 9 and the stator 11 and the commutation plate 12 in the directions A and B, and is vigorously stirred to be manufactured as an emulsion.

[0015]

[Problems to be solved by the device]

 By the way, in the above-described conventional vacuum emulsification device, while the upward flow discharged from each discharge hole 11D of the stator 11 in the arrow A direction is received by the commutation plate 12 on the lower surface side, the liquid raw material L Is diverted to the downward flow in the direction of arrow B.

However, since the liquid raw material L has a relatively high viscosity, when the flow in the direction of the arrow A becomes faster, the liquid raw material L rises outside the commutation plate 12 in the radial direction as shown in FIG. It is said that a part of the liquid raw material L stays above the commutation plate 12 and cannot be circulated in the emulsification tank 1, resulting in insufficient stirring in a part of the liquid raw material L, resulting in non-uniform stirring. There's a problem.

The present invention has been made in view of the above-mentioned problems of the prior art. The present invention can prevent the liquid from staying on the upper side of the commutation plate and can uniformly stir the liquid. It is intended to provide a stirring device.

[0018]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the feature of the configuration adopted by the present invention is that the lower side surface of the commutation plate is formed so as to be inclined downward from the central portion toward the outer peripheral edge portion.

[0019]

[Action]

 With the above configuration, when the liquid in the stirring tank is agitated by a turbine or the like with the commutation plate attached to the stator rod so that the outer peripheral edge of the commutation plate is in contact with the liquid surface of the liquid, the liquid is Since the bottom surface of the commutation plate rises toward the center and the outer peripheral edge side slopes downward, part of the liquid can be prevented from staying above the commutation plate. .

[0020]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The same components as those of the conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

First, FIG. 1 shows a first embodiment of the present invention.

In the figure, 21 indicates an agitator according to an embodiment of the present invention. The agitator 21 is similar to the agitator 5 described in the related art, and includes an electric motor 6, a turbine shaft 8, a turbine 9, Although comprised of stator rods 10, 10, ..., Stator 11, etc., the stirring device 21 is provided with a commutation plate 22 of this embodiment, which replaces the commutation plate 12 of the prior art.

Here, the commutation plate 22 is constituted by a commutation plate body 22A having a partial spherical surface having a concave curved shape at the center of the lower surface, and the shaft insertion hole 22B is formed in the center of the commutation plate body 22A. Four rod insertion holes 22C and 22C (only two are shown) are formed around the shaft insertion hole 22B. In addition, a cylindrical bearing portion 22D is provided above the shaft insertion hole 22B, and three short boss portions 22E (only one is shown) and one long portion are provided above each rod insertion hole 22C. A boss portion 22F is provided, and a screw hole 22G in the radial direction is formed in the boss portion 22F.

In the commutation plate 22, the bearing portion 22D is inserted into the turbine shaft 8 and the boss portions 22E and 22F are inserted into the four stator rods 10, respectively. By fixing the screw 23 to one of the stator rods 10, the screw 23 is fixed to a midway portion thereof. At this time, the lower side surface of the commutation plate 22 is adjusted so that the outer peripheral edge portion projects downward from the central portion toward the liquid surface, and the outer peripheral edge portion has a height before and after contact with the liquid surface. There is.

The stirrer 21 according to the present embodiment has the above-mentioned configuration, and its basic operation is not particularly different from that according to the prior art.

However, in this embodiment, the commutation plate 22 of the stirring device 21 is formed in a partially spherical shape, and the commutation plate 22 has an outer peripheral edge portion projecting toward the liquid surface more than a central portion, Since the portion is mounted on the stator rod 10 so as to have the height before and after the contact with the liquid surface, the following operational effects can be obtained.

That is, even if the liquid 9 is stirred by the turbine 9 and the stator 11, an upward flow is generated in the liquid raw material L as shown by an arrow A, and even if this flow collides with the lower surface side of the commutation plate 22, this flow is Since the flow rises in the center along the concave curved surface of the commutation plate 22 and inclines downward along the outer peripheral edge of the commutation plate 22, the liquid raw material L 1 flows on the outer side in the radial direction of the commutation plate 22. The surface can be prevented from rising as in the prior art, and the liquid raw material L can be effectively commutated by the commutation plate 22 into a downward flow in the arrow B direction.

Therefore, according to the present embodiment, the liquid raw material L can be reliably circulated in the emulsification tank 1 in the directions of arrows A and B, uniform stirring can be performed, and a part of the liquid raw material L can be obtained. Can be prevented from staying on the commutation plate 22 and problems such as insufficient stirring of the liquid raw material L can be solved.

Next, FIG. 2 shows a second embodiment. The feature of this embodiment is that the commutation plate is a disc-shaped commutation plate main body and a cone provided on the outer peripheral side of the commutation plate main body. It is that it is formed into an umbrella shape from the part.

In the figure, 31 indicates a stirring device according to the second embodiment. The stirring device 31 is similar to the stirring device 5 described in the prior art, and is similar to the electric motor 6, the turbine shaft 8, the turbine 9, the stator. Although comprised of rods 10, 10, ..., Stator 11, etc., the stirring device 31 is provided with a commutation plate 32 of this embodiment described later.

Reference numeral 32 denotes a commutation plate. The commutation plate 32 is a disc-shaped commutation plate main body 32 A forming a central portion, and a conical portion (described later) provided on the outer peripheral side of the commutation plate main body 32 A. 32H and the like. Here, one shaft insertion hole 32B is formed in the center of the commutation plate main body 32A, which is substantially the same as the commutation plate 12 described in the prior art, and four rod insertion holes 32C surround the shaft insertion hole 32B. , 32C (only two of which are shown) are bored, a cylindrical bearing portion 32D is provided above the shaft insertion hole 32B, and three short boss portions 32E (above each rod insertion hole 32C). Only one is shown) and one long boss 32F is provided.

Further, on the outer peripheral side of the commutation plate main body 32A, a substantially conical conical portion 32H that extends radially outward and has a predetermined inclination downward is integrally formed. Then, the commutation plate 32 is fixed to the stator rod 10 via a set screw 33 in a screw hole 32G provided in the radial direction of the boss portion 32F, and at this time, the commutation plate 32 is described in the first embodiment. Almost the same as the commutation plate 22, the lower end of the conical portion 32H is attached to the height before and after the contact with the liquid surface.

The present embodiment configured as described above also has substantially the same operational effects as the above-described first embodiment, but in particular, in this embodiment, the commutation plate 32 is formed with the commutation plate main body 32A and the conical plate 32A. Since it is formed in an umbrella shape from the portion 32H, it is not necessary to form the commutation plate 32 with a curved surface, and it is possible to manufacture it relatively easily.

In the second embodiment, the commutation plate body 32A is formed to have a diameter substantially corresponding to the stator 11, but instead of this, the commutation plate body 32A is formed to have a smaller diameter. The rod insertion holes 32C and the bosses 32E, 32F may be provided in the middle of the conical portion 32H.

Further, in each of the above-mentioned embodiments, a vacuum type emulsification apparatus for manufacturing an emulsion by stirring the liquid raw material L with the stirring apparatus 21 (31) while depressurizing the inside of the emulsification tank 1 with a vacuum pump is taken as an example. Although the present invention is not limited to this, the present invention may be used in a pressure type stirring device in which the inside of the stirring tank such as the emulsification tank 1 is higher than the atmospheric pressure, or the lid. The body 3 and the like may be eliminated and the stirring device may be suspended from above by a stand or the like in a stirring tank having an open upper part.

On the other hand, in each of the above-described embodiments, the electric motor 6 is composed of the motor body 6A and the motor base 6B, and the stator rod 10 is attached to the flange portion 6C of the motor base 6B. 6C may be eliminated and the stator rod 10 may be attached to the motor base 6B. On the other hand, in a small agitator, the electric motor may be composed of only the motor body 6A, and the stator rod 10 may be directly attached to the motor body 6A.

Further, in the above-described embodiment, the case where the electric motor 6 is used as the motor has been described as an example, but the present invention is not limited to this, and an air motor or the like may be used, for example.

[0038]

[Effect of device]

 As described above in detail, according to the present invention, the lower surface of the commutation plate is formed so that the outer peripheral edge portion thereof projects downward toward the liquid surface of the turbine and the stator. When the liquid flows upward due to agitation by and collides with the lower surface of the commutation plate, the liquid surface rises at the center of the lower surface of the commutation plate and slopes downward toward the outer peripheral edge. At this time, it is possible to reliably prevent a part of the liquid from accumulating on the commutation plate, prevent the liquid from being insufficiently stirred, and uniformly stir the liquid. .

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a vacuum emulsification device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a vacuum emulsification device according to a second embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a vacuum type emulsifying apparatus according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Emulsification tank (stirring tank) 6 Electric motor (motor) 8 Turbine shaft 9 Turbine 10 Stator rod 11 Stator 22,32 Commutation plate

Claims (1)

[Scope of utility model registration request] 1. A motor, a turbine shaft hung from the motor and rotationally driven by the motor, a turbine provided at a lower end side of the turbine shaft for agitating liquid in an agitation tank, and a turbine from the motor. A stator rod that hangs substantially parallel to the shaft, and a liquid in the stirring tank provided between the stator rod and the lower end side of the stator rod so as to surround the turbine from the outside in the radial direction and between the turbine and the turbine when the turbine rotates. A cylindrical stator that generates an upward flow in the axial direction, and a commutation plate that is provided midway in the axial direction of the stator rod and that commutates the upward flow generated between the stator and the turbine into a downward flow. In the stirring device, the lower surface of the commutation plate is formed so as to be inclined downward from the central portion toward the outer peripheral edge portion. .