JPH05235A - Apparatus for treating high viscosity liquid - Google Patents

Abstract

PURPOSE:To obtain an apparatus constituted so that the stagnation part of a liquid to be treated is reduced to produce a product of high quality by providing a rectangular frame member having no rotary shaft to the bottom part of a stirring tank and twisting the frame member to connect the same to a stirring shaft on the upper side thereof. CONSTITUTION:A rotary power transmission shaft 2, the stirring shaft 5 connected to the shaft 2 and the rectangular stirring blade members 8a-8g, 9a-9d mounted on the stirring shaft 5 are provided to a cylindrical stirring tank main body 1. The rectangular frame consisting of stirring blade constituting members 8e, 9d, 8f, 9c, 8g is provided to the end part on the lower side of the tank main body of the stirring shaft 5. The members 8e, 8f are mounted so that the mounting angles thereof are shifted in phase within a rotary plane and shearing force is imparted to a liquid to be treated between the members 8e, 8f and the wall of the tank main body. The scraping-up amount of the liquid to be treated and the position thereof are controlled as mentioned above to increase the free surface area of the liquid to be treated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus for removing volatile substances from a highly viscous substance, and particularly to a highly viscous liquid processing apparatus such as a polymer compound manufacturing apparatus suitable for manufacturing highly functional engineering plastics. It is about.

[0002]

2. Description of the Related Art A conventional vertical stirrer for highly viscous substances is generally composed of ribbon blades as shown in FIG. A conventional device will be described with reference to FIG. In the figure, stirring power is transmitted from a drive source to a rotating shaft 5 in the stirring tank main body 1 via a rotating power transmission shaft (hereinafter referred to as a rotating ear shaft) 2. The rotating shaft 5
A plurality of supporting arms 4a, 4b are attached in the horizontal direction, and ribbon blades 3a, 3b are attached to the tips of the supporting arms 4a, 4b in a spiral shape so as to scrape the inner wall of the stirring tank 1 thoroughly. .
A supply port 6 for a liquid to be treated and an additive is provided in an upper part of the stirring tank main body 1, and a discharge port 7 for the liquid to be treated is provided in a lower part. When stirring and mixing a high-viscosity liquid with this device, the viscosity of the liquid to be treated works well from several thousand to ten thousand poises, but when the viscosity of the liquid to be treated reaches tens of thousands poise, the ribbon blade 3a, 3b
The liquid to be treated adheres to the and the co-rotation phenomenon occurs. Further, since the peripheral speed of the surface of the rotating shaft 5 is low, when the liquid becomes a high viscosity liquid, co-rotation of the liquid to be treated occurs, a dead space occurs, and the stirring and mixing performance deteriorates. Therefore, in the conventional apparatus, the viscosity of the liquid to be treated is up to 10,000 poise, and if the viscosity is higher than that, the time required for stirring becomes longer, and further, there is a problem that the quality of the treated object deteriorates due to dead space. .
A device related to this kind of device is disclosed in, for example, JP-A-62-9.
5122 publication is mentioned.

[0003]

The above-mentioned prior art does not take into consideration the stirring and mixing treatment of high-viscosity substances, and as the viscosity of the liquid to be treated becomes higher, the adhesiveness becomes more severe. The flow acts only by the ribbon blade portion having a large shearing action by stirring, and there is almost no flow in the central portion of the stirring tank where the shearing force does not reach. When the viscosity of the liquid to be treated becomes higher, the adhesive force of the liquid to be treated attached to the surface of the ribbon blade becomes larger than the shearing force due to stirring, and the liquid to be treated remains attached to the surface of the ribbon blade and does not move and is in a co-rotating state. As a result, there is a drawback that the stirring and mixing deteriorates, the liquid to be treated adheres to the stirring shaft that is not easily subjected to shearing force, the quality of the adhered substance deteriorates, and the quality of the product deteriorates by stirring and mixing with other substances to be treated. there were. Further, since the conventional apparatus can process only a viscosity of up to about 10,000 poise, another high-viscosity processing apparatus must be used, and the manufacturing process of the high-performance resin becomes complicated and the manufacturing time becomes long.

An object of the present invention is to provide a high-viscosity liquid processing apparatus which has a small amount of retained liquid and which can improve product quality.

[0005]

In order to achieve the above object, a rectangular frame member having no rotating shaft is provided at the bottom of a stirring tank, the frame member is twisted in the rotating direction, and the upper side of the frame member is further rotated. And the stirring blade is connected to the stirring shaft, and the stirring blade is configured so that a plurality of rectangular frame members are twisted and attached to the stirring shaft in the rotational direction.

Further, the plurality of rectangular frame members attached to the stirring shaft are constructed so as not to overlap in the same plane of rotation.

[0007]

By controlling the amount and position of the processing liquid to be scraped by the rectangular frame-shaped stirring blade member, the free surface area of the processing liquid during stirring can be increased and the removal rate of volatile components of the processing liquid can be increased. .

Further, by controlling the amount of the treatment liquid to be picked up, the circulation route of the treatment liquid becomes complicated and the stirring and mixing time can be shortened.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, the stirring tank main body 1 is a cylindrical container having a circular cross section, and although not shown, the outside has a heating medium jacket capable of heating and cooling. The stirring blade is a rotary power transmission shaft (hereinafter referred to as a rotary ear shaft) 2, a stirring shaft 5 connected to the rotary shaft 2, and stirring blade members 8a and 8b, which are rectangular frame constituent members attached to the stirring shaft 5, 8c, 8d,
8e, 8g, 8f, 9a, 9b, 9c and 9d are combined and connected to form a rectangular frame. In this embodiment, the stirring blade members 8a, 8b, 8c, 8d, 8e, 8g, 8f are round bar members, and the stirring blade members 9a, 9b, 9c, 9d are plate members. Although shown, this embodiment does not particularly limit the shape of the member. Stirring blade constituent members 8e, 9
A rectangular frame composed of d, 8f, 9c, and 8g is attached to the end of the stirring shaft 5 on the lower side of the tank. The rectangular frame attached to the bottom of the stirring tank is a horizontal frame component member 8
e, 8g and 8f are attached by shifting the phase in the plane of rotation by the attachment angle θ _{1, and} by rotating the plate-shaped members 9d and 9c, a shearing force is applied to the treatment liquid between the plate-shaped members 9d and 9c, and The surrounding liquid is scraped up to the top of the tank. Further, the rectangular frame constituent members 8c, 9 attached to the stirring shaft 5
b, 8d and 8a, 9a, 8b are also horizontal members 8c and 8
The mounting angles between d, 8a and 8b are set at the respective phase angles θ ₂ and θ ₃ as in the case of mounting the frame member at the bottom of the tank. And these rectangular frames are attached at the attachment angles θ ₄ and θ ₅ , respectively. The twisting angles θ ₁ , θ ₂ , and θ ₃ of the rectangular frame are selected and used according to the viscosity of the liquid to be treated. Also, the mounting angle θ of the rectangular frame
_{Although 4} and θ ₅ are 90 degrees in the present embodiment, optimum values can be selected depending on the values of the twist angles θ ₁ , θ ₂ and θ ₃ of the rectangular frame.

The stirring action when treating a high-viscosity liquid with the above configuration will be described. Rotating ear shaft 2 and stirring shaft 5
By this, stirring power is transmitted to each rectangular frame member, and the stirring blades start rotating. Stirring blade members 8e, 9d, 8f, 9
The rectangular frame composed of c and 8 g rotates along the inner wall near the bottom of the stirring tank main body 1. At this time, the plate-shaped member 9d,
Since 9c is configured to scrape the processing liquid with respect to the rotation direction, the liquid is scraped along the tank wall. Next, the rectangular frame composed of the stirring blade members 8c, 9b, 8d attached to the upper part of the processing liquid scraped up by the lower rectangular frame member is further scraped up by the plate-shaped member 9b. To be And the stirring blade members 8a, 9 on the upper side
The rectangular frame composed of a and 8b is the lower rectangular frame member 8
The treatment liquid scraped by c, 9b, and 8d is scraped further to the upper side. At this time, the rectangular frame member 8 at the bottom of the tank
The amount of the liquid that moves to the upper side among the treatment liquids that have been scraped up by e, 9d, 8f, 9c, and 8g is determined by the amount of the plate-shaped member that acts on the upper side. The liquid that has not been scraped to the upper side here returns to the lower part of the tank again and is lifted to the upper part at the time of the next scraping action. Such an operation occurs in the next rectangular frame, and the processing liquid in the tank is mixed. When the high-viscosity liquid is stirred by the stirring blades of this embodiment, the liquid to be treated by each rectangular frame-shaped stirring member is the treatment liquid because the plate-shaped members are installed at two places in the rotating surface at the bottom of the tank. Has formed large lumps in two places. The next frame-shaped member has only one plate-shaped member in the rotation surface, so there is one large lump of processing liquid, and the next frame-shaped member also has only one plate-shaped member in the rotation surface. Since there is no such, one large lump of processing liquid can be formed. When viewed from the top of the stirring tank, the positions where these large lumps are formed are such that the mounting angles of the rectangular frame members are evenly distributed in a circle, so the path of the large flow of the processing solution spirals from the bottom of the tank to the wall of the tank. Distribution. The liquid is agitated while dropping from the path of the spiral processing liquid. Therefore, the surface shape of the treatment liquid becomes complicated, and the surface renewal action of the treatment liquid also increases, so that the ratio of the surface area of the liquid to the volume of the tank increases, which leads to an improvement in the degassing performance of volatile components, and in the polymerization reaction operation. There is an advantage that the reaction time can be shortened.

FIG. 3 shows another embodiment of the present invention.
This will be described with reference to FIG. This embodiment is the same as the above-mentioned embodiments in terms of basic components and operations, and has the same effect. In this embodiment, in particular, the stirring shaft 5 is extended to the bottom of the stirring tank, and a rectangular frame member is attached to this stirring shaft in the same manner as in the above-described embodiments. In this embodiment, since the stirring shaft is extended to the lower part of the tank, the viscosity of the liquid which can be treated is slightly lower than that of the stirring blade shown in the above-mentioned embodiment, but the strength of the stirring blade is increased. Further, since the high-viscosity liquid is agitated by the agitating blades of this embodiment, the liquid to be treated by each rectangular frame-shaped agitating member has two plate-like members installed in the rotating surface at the bottom of the tank. The treatment liquid forms large lumps at two places. The next frame-shaped member has only one plate-shaped member in the rotation surface, so there is one large lump of processing liquid, and the next frame-shaped member also has only one plate-shaped member in the rotation surface. Since there is no such, one large lump of processing liquid can be formed. When viewed from the top of the stirring tank, the positions where these large lumps are formed are such that the mounting angles of the rectangular frame members are evenly distributed in a circle, so the path of the large flow of the processing solution spirals from the bottom of the tank to the wall of the tank. Distribution. The liquid is agitated while dropping from the path of the spiral processing liquid. Therefore, the surface shape of the treatment liquid becomes complicated, and the surface renewal action of the treatment liquid also increases, so that the ratio of the surface area of the liquid to the volume of the tank increases, which leads to an improvement in the degassing performance of volatile components, and in the polymerization reaction operation. There is an advantage that the reaction time can be shortened.

FIG. 5 shows another embodiment of the present invention.
This will be described with reference to FIG. This embodiment is the same as the above-mentioned embodiments in terms of basic components and operations, and has the same effect. In this embodiment, in particular, the stirring shaft 5 is extended to the bottom of the stirring tank, and a rectangular frame member is attached to this stirring shaft in the same manner as in the above-mentioned embodiments. The horizontal members of the rectangular frames are not in the same plane of rotation, and are arranged in different steps. Also in this embodiment, since the stirring shaft is extended to the lower part of the tank, the viscosity of the liquid which can be treated is slightly lower than that of the stirring blade shown at the beginning like the above-mentioned embodiments, but the strength of the stirring blade is increased.
In addition, the surface renewal performance is configured so that the axial mounting positions of the frame-shaped members do not have the horizontal members of the rectangular frames in the same plane of rotation, but are staggered. By being dispersed, the surface shape of the treatment liquid becomes complicated and the surface renewal action becomes large, and good performance can be obtained. Furthermore, since the frame-shaped members are arranged in different steps, it is also effective in mixing the processing liquids.

[0013]

According to the present invention, the amount and position of the highly viscous treatment liquid to be picked up is controlled by the rectangular stirring blade member and the rectangular frame member attached to the stirring shaft, and the surface shape of the processing liquid is controlled. Can be complicated and the evaporation performance can be improved. Further, there is an effect that the circulation route of the treatment liquid in the tank becomes complicated and the mixing time can be shortened, and the reaction time can be shortened in the polymerization reaction operation.

[Brief description of drawings]

FIG. 1 is a schematic view of a high mucus processing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line I-I of FIG.

FIG. 3 is a schematic view of a high mucus processing device according to another embodiment of the present invention.

4 is a sectional view taken along line II-II of FIG.

FIG. 5 is a schematic view of a highly viscous liquid treatment device according to another embodiment of the present invention.

6 is a sectional view taken along line III-III in FIG.

FIG. 7 is a conventional stirring device for highly viscous substances.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Stirring tank main body, 2 ... Rotating shaft, 5 ... Stirring shaft, 6 ... Supply port, 8a-8g ... Stirring blade member, 9a-9d ... Stirring blade plate member.

Claims (7)

[Claims] 1. A high-viscosity liquid processing apparatus comprising a cylindrical or cone-shaped container and a stirring blade provided on a stirring shaft rotating in the container, wherein a rectangular frame member is provided on the bottom side of the container. An end of a stirring shaft for transmitting stirring power to the rectangular frame-shaped member is connected at the center of rotation of the rectangular frame-shaped member, and one rectangular frame is provided so that the horizontal length of the stirring shaft is close to the tank wall. A high-viscosity liquid processing apparatus, which is provided with a plurality of units. 2. The height according to claim 1, wherein the rectangular frame-shaped member comprises a horizontal rectangular frame-shaped member formed of a round bar and a member adjacent to the tank wall formed of a plate-shaped member. Viscous liquid processing equipment. 3. The rectangular frame-shaped member is configured such that horizontal rectangular frame-shaped members are attached to each other with respect to a center of rotation, and a phase angle is shifted in a direction in which the processing liquid is scraped with respect to the rotational direction. The high-viscosity liquid processing apparatus according to claim 1, which is characterized in that. 4. The high-viscosity liquid treatment according to claim 1, wherein the rectangular frame-shaped member is mounted so that horizontal members of the rectangular frame-shaped member mounted on the stirring shaft do not overlap in the same horizontal plane. apparatus. 5. A high-viscosity liquid processing apparatus comprising a cylindrical or cone-shaped container and a stirring blade provided on a stirring shaft that rotates inside the container, and rotates the center of the container to transmit stirring power. A high-viscosity liquid processing apparatus, characterized in that a plurality of rectangular frame members are attached to the stirring shaft, and a plurality of them are attached in a direction in which the phase angle is scraped up with respect to the rotation direction. 6. The height according to claim 5, wherein the rectangular frame member is formed by a horizontal rectangular frame member made of a round bar and a member close to the tank wall made of a plate member. Viscous liquid processing equipment. 7. The high-viscosity liquid treatment according to claim 1, wherein the rectangular frame member is attached so that horizontal members of the rectangular frame member attached to the stirring shaft do not overlap in the same horizontal plane. apparatus.