JPH04114427U - continuous mixer - Google Patents

Abstract

(57) [Summary] [Purpose] Is the specific gravity of gravel and cement significantly different?
In a mixer that mixes materials of widely different sizes, the mixing quality is improved and the mixture supply performance is improved by continuously discharging and supplying the mixture. [Structure] The entire or at least the lower half of the vertical mixing tank 3 is formed into a hollow conical stirring/mixing section 5, and there is an inlet 9 for materials to be mixed above the stirring/mixing section 5, and a lower end of the stirring/mixing section 5. is formed into a continuous discharge hole 10, and furthermore, a belt plate 12 is formed in the stirring and mixing part 5, and the winding direction and winding diameter are different.
In addition, each of them rotates in the same direction with the winding diameter gradually decreasing in the direction of the continuous discharge hole 10, and the wide surface 8 of the strip plate 12 faces the rotation center 7, and the wide surface 8 faces the rotation center 7. At least one pair of spiral-shaped stirring and mixing blades 1 and 2 arranged in a parallel or slightly inclined arrangement are provided, and the material to be mixed introduced from the input port 9 is stirred and mixed by the stirring and mixing blades 1 and 2, and the lower end is continuous. The structure is characterized by continuous discharge from the discharge hole 10.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can be applied to, for example, starch syrup, asphalt, high viscosity glue, or lime, cement, and sand. Continuous mixer used to produce mixtures of various solid-liquid substances such as and cement. It is related to.

0002

[Conventional technology]

Solid-liquid mixers used industrially have a variety of structures suitable for the target mixture. It is used. However, the known mixer is equipped with a mixing blade in a single mixing tank. , put a predetermined amount of materials to be mixed into the mixing tank, and move the mixing blade up and down or in rotation. Mix it for the required time by moving it or rotating the mixing tank itself, and then The mixture is taken out from the tank all at once, and the mixture for the next processing cycle is added. An intermittent production type mixer structure that repeats the mixing process has become common.

0003

[Problem that the idea aims to solve]

According to the conventional mixer structure described above, substances with large specific gravity differences or particles or When mixing substances with large differences in aggregate size, such as gravel and cement, These mixed substances with different physical properties have a qualitative tendency to separate and aggregate individually. At the same time, there is a dead zone in the mixing tank where the mixing action is insufficient. The problem is that it is difficult to obtain a uniform mixture.

0004 Since the mixer generates and discharges the mixture intermittently, the mass production line Continuity and consistency with other manufacturing equipment cannot be achieved, and stirring and mixing processing is required during the process. This is a factor that hinders the productivity of mass production lines.

[0005] The present invention provides a continuous mixer that solves the above-mentioned difficulties of the conventional technology. .

[0006]

[Means to solve the problem]

The continuous mixer of the present invention solves the above technical problems. At least the lower half part is made into a hollow inverted conical stirring and mixing part, and the upper part of the stirring and mixing part is The lower end of the stirring and mixing part is made into a continuous discharge hole for the mixture, and , in the stirring and mixing part, is formed of a strip plate and has different winding directions and winding diameters. Each has a winding diameter that gradually decreases in the direction of the continuous discharge hole, and rotates in the same direction. A pair of stirring and mixing blades are provided in each case, and the stirring and mixing blades are arranged to cover the wide side of the strip. facing the rotation center of the stirring mixing blade, and arranging the wide surface parallel to the rotation center; Or a structure made in a slightly inclined array.

[0007] In principle, the above-mentioned stirring mixing blades are arranged in parallel as described above, but if they are slightly tilted, In this case, the angle should be within 2° in consideration of the mixability of the materials to be mixed. Also, the above series A continuous discharge hole is an exhaust hole that continuously discharges the mixture in the mixing tank except during intentional work interruptions. A closing valve used for intentional work interruptions, emergency stops, work stoppages, etc. It may be provided.

[0008]

[Effect]

The continuous mixer of the present invention having the above configuration has a hollow inverted conical shape and meets the above-mentioned structural requirements. The main part is a stirring and mixing section with at least a pair of spiral stirring and mixing blades. The pair of rotating stirring and mixing blades inserts the thin knife vertically into the mixture. It exhibits a state in which it violently moves up and down, and the up and down movement affects each position in the stirring and mixing section. It is difficult to mix because there are large differences in specific gravity, size, and viscosity. Even the sex substances are mixed extremely uniformly.

[0009] In other words, conventionally known stirrers are designed to mix the mixture up and down. Because it is structured, it is possible to operate the thin knife horizontally or diagonally up and down. However, it was not possible to form a homogeneous mixture with the above-mentioned group of difficult-to-mix substances. However, the structure The idea of the mixing machine of this invention is that the above-mentioned thin knife is vertically operated and operates vertically. Therefore, an extremely excellent mixing effect can be achieved.

0010 Then, the stirring and mixing action is continued to the lower end of the stirring and mixing part in the bottom recess, It is continuously discharged from the continuous discharge hole while being finished agitated and mixed at the lower end of the neck shape. Therefore, it is difficult to mix uniformly with conventional mixing means, and with a large difference in specific gravity. Groups of mixed materials that are small in size, materials that have a large size difference, or liquid materials that have a large viscosity difference. Even in the case of a mixture group, etc., a mixture with a uniform and sufficient mixed form can be continuously generated. can.

[0011]

【Example】

Hereinafter, a detailed explanation will be given based on examples. First, let us look at Figure 1, which shows one embodiment of the present invention. For reference, in the continuous mixer of this embodiment, about the upper third of the solid mixing tank 3 is a hollow circle. It has a columnar shape, the lower 2/3 of which is hollow and an inverted conical shape, and has a vertically continuous shape. The hollow inverted cone-shaped part is the main stirring and mixing part 5, and the hollow cylindrical part is the auxiliary stirring and mixing part. It forms part 4. At the upper end of this mixing tank 3, there is an inlet 9 for the materials to be mixed, and the hollow The lower end of the mixing tank 3, which corresponds to the apex of the inverted cone, is a continuous discharge hole 1 through which the mixture is continuously discharged. 0.

0012 Furthermore, inside the mixing tank 3, there is a right-handed spiral when viewed from above the mixing tank 3. A spiral-shaped stirring and mixing blade 1 and a left-handed spiral-shaped stirring and mixing blade 2 are paired. It is installed in the vertical direction and rotates freely with the vertical center line of the mixing tank 3 as the rotation center 7. The current operating shaft 6 is installed, and the stirring and mixing blades 1 and 2 hold the holding bar 11 on this operating shaft 6. It is supported and fixed through the shaft and rotates in the direction of arrow A in the figure.

The pair of stirring and mixing blades 1 and 2 have different winding diameters as shown in R 1 R 2 in the same cross section of the mixing tank 3 perpendicular to the rotation center 7, and also have different winding diameters as shown in the figure R ₁ R ₂ . 5 has a spiral shape in which the diameter of each winding gradually decreases toward the lower end, following the inverted conical shape of the main stirring/mixing section 5, and the lower end reaches the inlet of the continuous discharge hole 10. Further, the stirring and mixing blades 1 and 2 of this embodiment form a spiral strip by winding the strip 12 so that its wide surface 8 faces the rotation center 7, and the wide surface 8 intersects with the rotation center 7 at an angle θ= It has a slightly inclined arrangement with an upward opening of 1°.

[0014] When the materials to be mixed are introduced from the input port 9, the stirring and mixing blades 1 and 2 rotate. The materials to be mixed in the tank are mixed via the auxiliary stirring and mixing section 4 and the main stirring and mixing section 5. The structure is such that the mixture is continuously discharged from the discharge hole 10 at the lower end. More than A continuous mixer performs the above-mentioned action and continuously discharges a mixture in a uniformly mixed form. be able to.

[0015] Next, a second embodiment of the present invention will be described with reference to FIG. That is, this example Inside the mixing tank 3 in which the auxiliary stirring and mixing section 4 and the main stirring and mixing section 5, which are the same as in the first embodiment, are arranged in series. , a right-handed stirring mixing blade 1A, a left-handed stirring mixing blade 2A, and , two pairs of stirring and mixing blades consisting of a right-handed stirring and mixing blade 1B and a left-handed stirring and mixing blade 2B. Copper blades are provided, and these four blades are arranged in the same transverse direction perpendicular to the rotation center 7. , the respective winding diameters are different, and the continuous discharge hole 1 is the same as in the above embodiment. There are entrances up to 0. Since this embodiment in FIG. 2 has two pairs of stirring and mixing blades, The effect of the present invention described above becomes even more remarkable.

[0016] In addition, in the above-described configuration of the present invention, the main agitation mixing section 5 of the inverted conical mixing tank is not included. Although it is an essential requirement, the auxiliary stirring and mixing section 4 that is connected to the main stirring and mixing section 5 is omitted. can do.

[0017]

[Effect of the idea]

As explained above, the continuous mixer of the present invention is suitable for mixing groups of materials with large differences in specific gravity, or or mixtures that are difficult to mix, such as mixtures with large size differences, mixtures with large viscosity differences, etc. Uniform and sufficient mixing form for mixing substances and other general solid-liquid substances In addition to providing a high-quality mixture of This improves the continuity and consistency of the processing line, which requires processing during the process, and improves productivity. It has the effect of

[Brief explanation of drawings]

[Fig. 1] Front sectional view showing a continuous mixer according to the first embodiment of the present invention

[Fig. 2] Front sectional view showing a continuous mixer according to the second embodiment of the present invention

[Explanation of symbols]

1 Right-handed stirring mixing blade 2 Left-handed stirring mixing blade 3 Mixing tank 4 Auxiliary stirring mixing section 5 Main stirring and mixing section 6 Operating axis 7 Center of rotation 8 Wide side 9 Inlet 11 Continuous discharge hole 12 Band plate

Claims (1)

[Scope of utility model registration request] Claim 1: The entire or at least the lower half of the vertical mixing tank is formed into a hollow inverted cone-shaped stirring and mixing section, and above the stirring and mixing section there is a material inputting section, and the lower end of the stirring and mixing section is provided. There is no continuous discharge hole for the mixture, and further, a band plate is formed in the stirring mixing part to have a different winding direction and a different winding diameter, and each of the strips has a winding diameter that gradually decreases in the direction of the continuous discharge hole,
and at least a pair of stirring and mixing blades that rotate in the same direction are provided, and further, the stirring and mixing blades have a wide side of the strip facing the rotation center of the stirring and mixing blade, and the stirring and mixing blades are arranged so as to face the rotation center of the stirring and mixing blade. A continuous mixer characterized by a structure in which wide surfaces are arranged in parallel or slightly inclined.