JPH0420010Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a device for continuously kneading ceramic raw materials, and is particularly applicable to spraying materials used when spraying the inner walls of various furnaces, molten metal containers, etc. This device is suitable for continuous kneading.

[Conventional technology]

In order to improve the adhesion rate and suppress the generation of dust during spraying construction, it is conventional practice to pre-knead spraying materials by adding 2 to 5% water in advance when preparing them. .

That is, as shown in FIG. 3, a powdered spraying material is first charged into a mixer 2 from a hopper 1, mixed with an appropriate amount of water, and conveyed by a belt conveyor 3 to just above the spraying machine 4.

The sprayed material kneaded and transported here has dumplings and
If granular lumps are mixed and the spraying machine is loaded as is and spraying is performed, it will cause clogging in the feeder of the spraying machine and clogging in the pipe for transportation to the spraying nozzle, which will affect the quality of the sprayed work. This results in a decrease in

To prevent this, a crusher 5 is provided above the sprayer 4 to loosen the lumps. As described above, conventional kneading equipment requires four separate types of equipment, namely a hopper mixer, a belt conveyor, and a crusher, and is operated in combination.

[Problem that the invention attempts to solve]

The conventional kneading equipment described above has four different
Each type of equipment is installed separately, requiring a large installation area, and three workers are required to operate and monitor each equipment, including the spray machine.
In addition, there is a problem in that moving, installing, cleaning, etc. the entire device is complicated and requires manpower and time, and therefore construction efficiency is low.

This idea was devised to solve these problems, and by improving the overall structure and mechanism of the device, the installation area can be reduced, work can be done by a small number of people, and equipment costs can be reduced. The purpose is to obtain an efficient continuous kneading device.

[Means for solving problems]

The continuous kneading device according to this invention is a kneading device that adds a liquid to a powder material and kneads the material.The continuous kneading device is a kneading device that adds a liquid to a powder material and kneads the material. a screw conveyor that conveys the screw conveyor, a spray nozzle provided near the center of the screw conveyor that adds liquid to the material being kneaded and conveyed, a wire mesh that covers an exit port of the screw conveyor, and the wire mesh. The apparatus is equipped with a ribbon-shaped screw that presses the above-mentioned material kneaded and conveyed onto the lower side of the wire mesh to crush it.

A ribbon-shaped screw is a screw conveyor used for kneading and conveyance, in which the center part of the screw is omitted and only the peripheral part is left, so that the entire screw has a ribbon-like shape.

[Effect]

The present invention provides a screw conveyor that transports the material supplied from a hopper storing the material to an inlet by a supply device to an outlet while kneading the material;
The kneading and
A spray nozzle that adds liquid to the material being conveyed, a wire mesh that covers the exit port of the screw conveyor, and a ribbon-like screw that presses the material kneaded and conveyed onto the wire mesh below the wire mesh to crush it. It is a compact device that has the function of kneading the supplied material with a kneading liquid such as water while conveying it, and finally crushing it.

Further, the crushing mechanism consisting of a rotating ribbon-shaped screw and a mesh having an outer periphery can rub the dumpling-shaped material against a wire mesh and crush the material in synchronization with the kneading.

With the above configuration, the spraying material can be prepared continuously and automatically.

〔Example〕

Figures 1 and 2 show an embodiment of this invention, with Figure 1 being a side view and Figure 2 being A of Figure 1.
-A sectional view. In the figure, 6 is a material supply mechanism, 7 is a kneading mechanism, and 8 is a crushing mechanism.As shown in the figure, these three are directly connected to form an integrated device, and everything from material supply to discharge can be carried out automatically and continuously. I can do it.

That is, the material 9 put into the material hopper 1 is continuously cut out in a predetermined amount by the screw feeder 11 driven by the variable speed motor 10 and transferred to the trough 1 of the screw conveyor 12 of the kneading mechanism 7 .
It is supplied falling within 3. Further, the material cutting speed can be arbitrarily adjusted according to the kneading conditions by the variable speed motor 10 of the material supply mechanism.

The screw conveyor 12 is installed at an angle, and the supplied material is kneaded by the rotation of a screw shaft 15 and screw blades 16 driven by a motor 14, and is successively conveyed to the upper right in the figure.

17 is a spray nozzle that sprays and adds water to the sprayed material, and there are usually 2 to 3 nozzles installed approximately in the center of the screw conveyor, and the amount of added water is within the range of 3 to 5% of the sprayed material. The total amount of water is continuously controlled by an instantaneous water meter 18 so that the amount of water is a predetermined amount. Since the instantaneous water meter 18 is attached to the spray nozzle 17 of the kneading mechanism, it is possible to accurately adjust and spray the amount of added water calculated from the final appropriate water amount of the sprayed material onto the transferred material.

The kneaded and transferred spray material is usually several mm to a maximum of 30 mm.
Since lumps of mm size are generated, a crushing mechanism 8 is provided directly connected to the screw conveyor to loosen them. That is, a ribbon-shaped screw 19 is mounted coaxially with the screw shaft 15, and the lower part thereof is surrounded by a wire mesh 20 having a mesh size of 10 to 15 mm, as shown in a sectional view in FIG.
The spraying material is transported by a ribbon-shaped screw 19 and rubbed against a wire mesh 20 to be crushed, and pieces of a predetermined size pass through the wire mesh and are sent to the spraying machine 4.
A predetermined amount of water is added to the water through a transport hose 21, and the water is sprayed from a spray nozzle 22.

[Effect of idea]

Since this invention has the structure and operation described above, it has the following effects compared to the conventional device.

(1) It is a compact device that combines the functions of material supply, kneading, conveyance, and crushing, so it requires less space for installation.

(2) Less effort and time are required for installation, movement, cleaning, etc.

(3) Since each process can be carried out continuously and almost automatically, two people are sufficient instead of the conventional three.

(4) The equipment cost for all equipment has been reduced to 2/3 of the previous cost.

This continuous kneading device can be applied not only to ceramic raw materials but also to kneading other raw materials by adding water or other liquid to a powder mixture.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of this invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 showing the crushing mechanism, and Fig. 3 is a sectional view showing the crushing mechanism.
The figure is a schematic overall side view of a conventional device. 1...Hopper, 6 ...Material supply mechanism, 7 ...
Kneading mechanism, 8 ... Crushing mechanism, 10... Variable speed motor, 11... Screw feeder, 12...
Screw conveyor, 15... Screw shaft, 1
7... Spray nozzle, 19... Ribbon shaped screw, 20... Wire mesh.

Claims (1)

[Scope of Claim for Utility Model Registration] In a kneading device that adds liquid to granular material and kneads the material, the material is supplied from a hopper storing the material to an inlet by a supply device and then kneaded into an outlet. a spray nozzle provided near the center of the screw conveyor for adding liquid to the material being kneaded and conveyed; a wire mesh covering an exit portion of the screw conveyor; A continuous kneading device comprising: a ribbon-shaped screw that presses the material kneaded and conveyed under a wire mesh to crush the material.