JPS5856494B2 - Soil kneading machine equipped with pickling device - Google Patents

Description

[Detailed Description of the Invention] (Object of the Invention) The present invention enables uniform composition of the raw clay and more reliable vacuum degassing by crushing the clay discharged from the clay kneading machine into uniform fine particles. , relates to a clay kneading machine equipped with a crushing device for the purpose of improving quality and efficiency in the production of ceramics, etc.

(Prior Art) Since conventional clay kneading machines had no catching and crushing mechanism, kneading of the clay was carried out using blades and screens that conveyed the clay.

A distance was created between the blades and the screen surface, and a clay wall was created here to act as a partition between the vacuum chamber and the vacuum chamber. At the same time, it was possible to equalize the fraction and moisture inside the clay in this high-pressure area. However, it is not possible to capture and crush the small clay lumps that are pushed together between the clay particles, and the purpose of equalizing the moisture content cannot be achieved.In addition, hard lumps of soil that are larger than the holes in the screen can clog the screen. I had to stop operating the soil kneading machine and disassemble it for cleaning.

This had become a bottleneck in production.

In addition, the soil clod that has passed through the holes in the screen does not become fine particles, so it has to be passed through the soil muller many times, and even then, the soil cannot penetrate into the core of the clod sufficiently and the moisture level is insufficient. This required a considerable amount of time for ``nekashi'' to allow moisture to penetrate into the core of the clod, and this was another bottleneck in production.

Moreover, the quality of products using this clay, which was mixed with clay, had uneven moisture content, and was not completely vacuum degassed, was not of good quality.

(Structure of the Invention) In view of the above-mentioned problems, the present invention has an internal crushing female tooth on the body side of the kneading chamber in the middle of the kneading section from the raw material input port to the vacuum chamber of the clay kneader, and From the entrance side to the exit side,
An outer ring with an inner diameter that gradually becomes smaller is fixed concentrically with the cross-wire shaft, and a boss having crushing female teeth corresponding to the crushing female teeth on the outer peripheral surface is fixed to the cross-wire shaft passing through the center of this outer ring. However, the present invention relates to a clay kneading machine equipped with a crushing device in which the gap between the female teeth and the male teeth becomes narrower toward the outlet side than the artificial side.

Next, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 In FIGS. 1 to 3, a clay kneading machine (hereinafter referred to as a clay kneading machine) D equipped with a catching and crushing device 1 is a kneading machine located between the raw material input port 3 and the screen 4 of the duplex body 2. An outer ring 6.6, which will be described later, is fixed concentrically with the kneading shafts 7, 7 inside the body 2 of the section 5, and the kneading shaft corresponding to the outer ring 6.6 is installed inside each of the outer rings 6.6. Fix a boss 8.8, which will be described later, at position 7,7.

To explain the outer ring 6 in detail, as shown in FIGS. 2 and 4, the outer ring 6 is fitted and fixed inside the body 2 of the mixing section 5 between the raw material input port 3 and the screen 4.
The inner circumferential surface of is a conical surface 9 whose diameter gradually decreases from the population side (left side in Figure 2) to the outlet side (right side in Figure 2), and this conical surface inner surface 9 has a spiral shape. A female tooth (hereinafter abbreviated as female tooth) 10 is cut, and another female tooth 11 is further provided between the teeth of the female tooth 10 on the exit side.

To explain the boss 8 in detail, the outer peripheral surface 12 of the boss 8, which is fixed at the position of the cross-wire axis I corresponding to the outer ring 6 in FIGS. 2 and 4, has the female teeth 1 of the outer ring 6.
1, a spiral male crushing tooth (hereinafter referred to as male tooth) 13, and a male crushing tooth 14 (hereinafter referred to as male tooth) corresponding to the female tooth 11.
(hereinafter referred to as male teeth) are removed.

In Figures 1, 2 and 4, 15 is the female tooth 1.
0, 11 and the gap between the male teeth 13, 14, 16 is the kneading part 5
, 17 is the small hole of the screen 4, 18 is the bearing part of the kneading shaft I, 19 is the vacuum chamber, 20 is the extrusion shaft, 21 is the screw of the extrusion shaft 20, 22 is the cap, 23 is the discharge port, B is the bearing , G1 is a driving gear, G2 is a driven gear, G
3. G4 is a transmission gear, K is a machine base, Ll and L2 are base legs, M is a motor, Pl is a motor pulley, P2 is a driven pulley, and ■ is a ■belt.

Example 2 Although illustration is omitted in Example 2, the female teeth 11 on the exit side of the outer ring 6 of Example 1 and the corresponding male teeth 14 on the exit side of the boss 8 are not provided, and the female teeth 13 are not provided. This clay kneading machine is equipped with teeth 10 and 13 whose widths are widened so that the gap 15 gradually narrows toward the outlet side, and the other structure is the same as that of the first embodiment.

In addition, although the present Examples 1 and 2 have been described with respect to a kneading machine having a double body, the same applies to a kneading machine with a single body.

(Action of invention) The operation of the present invention will be explained with reference to figures of embodiments.

Example 1 In FIGS. 1 to 4, the raw material (not shown) input from the raw material input port 3 of the kneading machine is pushed to the screw 16 in the mixing section 5, and Crushing device 1
, and the gap 15 between the female teeth 10 on the inlet side of the outer ring 6 fixed to the inner periphery of the body 2 and the male teeth 13 provided on the outer circumferential surface 12 of the boss 8 fixed to the kneading shaft 7 When the clay is pushed in, the spiral male teeth 13 displace the clay in the gap 15 between the spiral male teeth 13 and the female teeth 10 provided on the conical inner surface 9 of the outer ring 6, which has a smaller diameter toward the exit side. It is further pushed towards the exit side in such a way that it is caught and crushed.

At this time, the small clay lumps contained in the clay are crushed and mixed into even smaller particles, and at the same time, the water content is homogenized.

Further smaller clay lumps are caught and crushed by female teeth 10 and 11 provided on the outlet side of the device 1, which are further narrowed.
A second stage of crushing is performed in the gap 15 between the male teeth 13 and 14, and the small particles remaining in the first stage are further crushed into fine particles, and the water is homogenized and discharged from the crushing device.

Then, the clay is conveyed by the screw 16 of the kneading shaft 7, pressed against the screen 4, passes through the small holes 17 of the screen 4, and enters the vacuum chamber 19, where the micro air particles contained in the clay are removed. While being kneaded by the screw 21 of 20, the clay is pushed into the cap 22 and is discharged as a high quality clay from the discharge port 23 at the tip.

Example 2 Example 2 is a pair of female teeth and male teeth of the crushing device 1 of Example 1, but the tooth width of the female teeth and male teeth is made larger toward the tip than that of Example 1. Then, the gap 15 is narrowed, and the second-stage catching and crushing action in Example 1 is performed in this narrow gap, and the other actions are the same as in Example 1.
It is similar to

In the first embodiment, the screen 4 is provided between the crosstalk section 5 and the vacuum chamber 19, but the screen 4 is not necessarily provided and the crushing device 1 may also serve as the screen 4.

(Effects of the Invention) In the present invention, the gap between the female teeth of the outer ring and the male teeth of the boss is gradually narrowed from the inlet side to the outlet side, so that the clay is well bitten into the gap. Since the compressive force of the clay that has entered the clay is increased, the crushing effect is high, and since the clay being mixed is densely packed under tight pressure, the crushing is performed more efficiently.

In conventional screens, the length was limited by the extrusion force of the screw and the resistance of the clay, but the crushing device of the present invention has the above-mentioned structure, so the distance over which the clay is crushed is long. (approximately 5.5 times that of a conventional screen) Also, since the gap through which it passes is narrow, even hard, dry clods of soil are finely pulverized and crushed, so there is no risk of clogging.

Therefore, in the treatment of hard and dry clay around the surface of a cake in a filter press, or in the recycling process of clay discharged during potter's wheel molding, the inside of the hard small lumps in the clay after being discharged from the clay kneading machine ( In the present invention, there are no large lumps in the clay and the clay is crushed into fine particles, so there is almost no time needed for the clay to be removed. .

Furthermore, by passing the clay through the crushing device of the present invention, the clay is crushed finely, and at the same time, it is pressurized and spread thinly, so that the ingredients and moisture are uniform, and even vacuum degassing is possible. The advantage of being able to obtain good quality clay without any peculiarities is significant.

Further, according to the present invention, there is no need to pass the soil through the kneading machine several times as in the prior art, and the kneading time is significantly shortened.

[Brief explanation of drawings]

FIG. 1 is a partially disclosed front view of an embodiment of the present invention, FIG. 2 is a partially disclosed plan view of the same, FIG. 3 is a sectional view taken along line A-A in FIG. 1, and FIG. 4 is a cradle of the present invention. FIG. 2 is an enlarged perspective view of the crushing device, with a portion thereof shown; Explanation of the symbols of the main parts, 1... Crushing device,
2...Body part, 3...Raw material input port, 5.
... Kneading section, 6 ... Outer ring, 1 ...
...Kneading shaft, 8...Boss, 10...
・(Crushing) Female teeth, 11...(Crushing) Female teeth, 13...(Crushing) Male teeth, 14...
... (crush) male tooth, 15 ... void, 19
...Vacuum chamber, D...Soil kneading machine.

Claims (1)

[Claims] 1 Attach an outer ring with crushing female teeth to the inner periphery of the kneading barrel in the mixing section from the raw clay input port to the vacuum chamber, and fix a boss with catching and crushing male teeth to the mixing shaft at a position corresponding to this outer ring. A soil kneading machine equipped with a crushing device is characterized in that the gap formed by the female crushing teeth and the male crushing teeth is gradually made smaller from the artificial side toward the outlet side.