JPH04122427A - Continuous treatment apparatus of highly viscous material - Google Patents

Abstract

PURPOSE:To lessen the whole sagging degree of a rotator even if the capacity of an apparatus becomes high to drive the apparatus safely without stirring blades touching a container main body by installing a reinforcing beam in the stirring blades which have rod-like square frames. CONSTITUTION:Two rotary shafts 2b are put in parallel in the longitudinal direction in a cylindrical container 1 put horizontally and both ends are fixed by a bearing 5. A plurality of stirring blades connected with rod-like square frames 3a, 3b, 4a, 4b are attached between rotary shafts in both ends and the rotary shafts 2a, 2b put in parallel are held in the way that the tip parts of the rod-like square frames of one corresponding stirring blade may pass close to the rotary center of the other stirring blade. Then, one or a plurality of parts 7a, 7b which are joined in the direction of the rotary axis between the axial center and the square frames 3a, 3b in the longitudinal direction are installed between a plurality of the square frames 4a, 4b in the radial direction installed between the rotary shafts 2a, 2b. As a result, the stirring blades do not touch the container main body and the apparatus is driven safely.

Description

Detailed Description of the Invention [Field of Application on the Beam] The present invention relates to an M-subsequent treatment device for agitating and treating highly viscous liquids, and particularly for producing polymers by bulk polymerization and for producing low molecules from highly viscous substances. This invention relates to a continuous processing device that devolatilizes solvents and the like.

[Conventional technology]

In general, in continuous processing such as kneading and reaction of high viscosity substances, the dead space within the equipment should be kept as small as possible.
In addition, it is required that the flow be close to that of extrusion. For this reason, various types of containers have been adopted in which a horizontally elongated cylindrical container is used and two rotating shafts with stirring blades are installed in the longitudinal direction. For example, as shown in Fig. 3, a structure in which disk-shaped blades 10 are arranged in multiple stages and the inner surface of the container l can be scraped over the entire surface is used to reduce dead space. If the viscosity becomes higher than
It adheres to the surface of the blade b and the surface of the blade 10 and becomes fluid.The longer the operation, the more the amount increases, causing scaling and adversely affecting the quality of the product.

Therefore, there is an apparatus described in JP-A-62-112624 in which this rotating shaft is eliminated and the stirring blades are also formed from a flat plate or a linear member. With this device, the amount of adhesion can be significantly reduced compared to conventional devices.

In this device, both ends of the rotating body are fixed with bearings, but as the device becomes larger, the stirring effect also increases (this means that the members must be made larger in terms of strength, and the Mik of the rotating body also increases. As a result, the overall deflection of the rotating body due to its own weight in the vertical direction increases, and the amount of deflection becomes even larger due to the additional load applied during operation. A minimum gap is provided in order to scrape and clean the processed material with blades.

Therefore, when the rotating body becomes deflected greatly, there is a problem that it comes into contact with the main body wall.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology has a disadvantage in that the structure of the stirring blade makes the device larger and the tip of the stirring blade comes into contact with the container body.

The purpose of the present invention is to maintain the mixing characteristics of the conventional device even when the amount of the device 8' becomes large, and to produce polymers without having a central axis in the rotating body composed of stirring blades connected to rod-shaped rectangular frames. It is an object of the present invention to provide a continuous processing device which can reduce the amount of adhesion as much as possible and can operate without the blades coming into contact with the inner surface of the container body.

[Failure to solve the problem]

In order to achieve the above object, a reinforcing beam is attached to the stirring blade of the rod-shaped rectangular frame to increase the rigidity.

[For production]

In FIGS. 5 and 6, two radial members 4a, 4
b and the two longitudinal members 3a, 3b forming one rectangular frame is referred to as one stirring blade 3, 4.

At the position of the rod-shaped rectangular frame (stirring blades 3, 4) between the rotating shafts 28 shown in FIGS. 5 and 6, the moment of inertia of area around the left and right horizontal lines passing through the center of the rotating shaft is higher for cross-section A than for cross-section B. Much smaller (easier to deform).

Therefore, IF at position A? In order to increase the dihedral moment, the radial members 4a, 4b of the adjacent blades are separated from the axial center of the rotating shaft 2a and the longitudinal member 3a.

3b is connected in parallel with the longitudinal members 3a and 3b by a single or plural reinforcing beams.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, ■ is the container body of the processing device, which is a horizontally long cylindrical container with a cross section shown in FIG. 2, and is installed horizontally. Generally, the outer periphery of the container body l is covered with a jacket (not shown) for heating. Reference numerals 2a and 2b are rotating shafts arranged horizontally and horizontally at both ends of the container body l in the longitudinal direction, and are supported by bearings 5 fixed to the side surfaces of the container body l. Either the left or right rotating shaft 2a or 2b is driven by a drive device N (
(not shown). Both rotating shafts 2a, 2b
There are two adjacent longitudinal members 3a, 3b in between.
A plurality of rectangular stirring blades 3, 4 formed by two radial members 4a, 4b are attached with a phase angle of 90 degrees in the axial direction.

Also, the radial member 4a of the stirring blades 3, 4 having both shafts.

4b are provided at a phase angle of 45 degrees from each other when viewed from the direction of the rotation axis 28.2b.

Further, the axis rwj distance is set so that the radial member 4a or 4b of one axis passes as close as possible to the center of the other axis by rotation. The radial members 4a, 4b of both shafts are close to the inner wall surface of the container body l and rotate from the inside to the outside so as to lift the liquid inside.

In the stirring blades 3 and 4 having both shafts, a reinforcing beam is installed between the radial members 4a and 4b of the stirring blades on both sides in the axial direction at a radial position between the center of the rotating shafts 2a and 2b and the longitudinal members 3a and 3b. 7a or 7b is attached. L-shaped reinforcing arms are used for the stirring blades at both ends of each shaft, and the other end is connected to the rotating shaft 2a or 2b.

6 and 9 are inlet and outlet nozzles for the liquid to be treated, which are provided at one longitudinal end and the other end of the lower part of the container body l; 8 is an outlet nozzle for volatile matter, which is provided at the upper part of the other end of the container body l. It is.

In this embodiment, two reinforcing beams 7a or 7b are attached to one stirring blade.
Although this is the present example, there is another example of a processing apparatus having stirring blades provided with more than two reinforcing beams.

〔Effect of the invention〕

According to the invention, the device! ! ! Even if the amount is large, the overall amount of deflection of the rotating body can be reduced, and the stirring blades can be operated safely without coming into contact with the container body.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of a continuous processing apparatus for highly viscous substances according to the present invention. A sectional view taken along the line 1-1 is shown. Figures 3 and 4 show an example of a conventional device;
The figure is a cross-sectional view of the main body of the container in the axial direction, and FIG. 4 shows a cross-sectional view taken along the line 1--■ in FIG. Figures 5 and 6 show an example of a conventional processing device, with Figure 5 being a partially sectional plan view seen from the top of the device, and Figure 6 being a sectional view taken along the line 5 (8). show. 1... Container body, 2a, 2b... Rotating shaft, 3a.

Claims (1)

[Claims] 1. Two rotating shafts are arranged in parallel in the longitudinal direction in a cylindrical container installed horizontally, the rotating shafts are fixed with bearings at both longitudinal ends, and there are multiple rotating shafts between the rotating shafts at both ends. Attach agitating blades in which two rod-shaped rectangular frames are connected, and hold the rotary shafts arranged in parallel so that the tips of the rod-shaped rectangular frames of one of the corresponding agitating blades pass close to the center of rotation of the other stirring blade. In the continuous processing apparatus for highly viscous substances, one or more rotary members are rotated between the radial members of a plurality of rod-shaped rectangular frames provided between the rotating shafts, and between the shaft center and the longitudinal members of the rectangular frames. A continuous processing device for highly viscous substances, characterized in that a member is provided that connects in the axial direction.