JPH0427540Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a continuous supply structure for an inorganic kneaded material.

[Conventional technology]

When extrusion molding an inorganic kneaded material using hydraulic raw materials such as cement, it is necessary to make the quality of the mixture uniform, so cement, aggregate, water, etc. are mixed in advance using a mixer before feeding the materials to the extrusion molding machine. What is done is done.

Since the mixing in the mixer is a batch system, there is a blank time during which materials cannot be supplied to the extruder during the material mixing time.

On the other hand, when a large amount of mixed material is fed into the hopper of an extrusion molding machine all at once, the material gets clogged in the hopper, resulting in so-called bridging, so it is necessary to gradually feed the mixed material in the required amount. A stock conveyor with a capacity corresponding to the mixer and the hopper is inserted between the mixer and the hopper, and this stock conveyor gradually supplies the material and also shortens the blank time mentioned above.

[Problems with conventional technology]

However, even if the material is supplied to the hopper by the stocking conveyor, the material previously discharged during the mixing time is sequentially conveyed toward the hopper, so that no mixed material is placed on the stocking conveyor. Blank areas were created, and as a result, the supply of material to the hopper of the extrusion kneader was interrupted during the conveyance time of these blank areas, making it difficult to adjust the correlation with the extrusion speed.

[Problems solved by invention]

In view of the above-mentioned problems, this invention aims to provide a continuous supply structure for inorganic kneaded materials that can continuously supply mixed materials to an extrusion molding machine even though mixing is performed using a batch system. It has been done.

[Technology to solve problems]

That is, the continuous supply structure of the inorganic kneaded material of this invention is such that a stock conveyor with a variable conveyance speed is arranged at the discharge port of the inorganic material mixer, and a supply conveyor with a constant conveyance speed is connected to the stock conveyor.
It is characterized in that a hopper of a kneading extruder is connected to the supply conveyor.

〔Example〕

Next, an example of this invention will be described.

Figure 1 is a side view of an embodiment of this invention, Figures 2-
FIG. 4 is an explanatory diagram of the operation of the embodiment.

The continuous supply structure of the inorganic kneaded material of this invention is such that a stock conveyor 2 with variable conveyance speed is arranged at the discharge port of a batch type inorganic material mixer (hereinafter referred to as mixer) 1. 2
A supply conveyor 3 with a constant conveyance speed is connected and arranged,
A hopper 5 of a kneading extruder 4 is connected to this supply conveyor 3.

In the above, the conveyance speed of the supply conveyor 3 is the optimum conveyance speed for supplying the material to the hopper 5, and the conveyance speed of the stock conveyor 2 is, for example, the speed of the supply conveyor 3 and the time when the material is discharged from the mixer 1. , and a high speed at which the amount of material deposited per unit belt length is equal to that on the supply conveyor 3.

[Effect]

Next, the operation of the embodiment of this invention will be explained.

First, as shown in FIG. 2, material A mixed in a mixer 1 is discharged onto a stock conveyor 2. At this time, the stock conveyor 2 is transported at the aforementioned high speed. When the material is uniformly placed on the stock conveyor 2, the speed is reduced to synchronize with the supply conveyor 3, and the material A is transferred onto the supply conveyor 3 as shown in FIG. At this time, at the same time, new materials are supplied to the mixer 1 and mixing is started.

When the mixing by the mixer 1 is completed, the speed of the stock conveyor 2 is increased again and the material A is discharged. At this time, most of the previous material has just been transferred onto the supply conveyor 3, so
Moreover, as shown in FIG. 4, the blank area B on the supply conveyor 3 until the next new material A is supplied is extremely shortened. , this is a time period where there are almost no problems.

〔effect〕

As explained above, although the material is fed in batches, this invention allows material to be substantially continuously fed to the kneading extruder by adjusting the speed of this conveyor, making production management easy. This has practical effects.

[Brief explanation of the drawing]

Figure 1 is a side view of an embodiment of this invention, Figures 2-
FIG. 4 is an explanatory diagram of the operation of the embodiment.

Claims (1)

[Scope of utility model registration request] A stock conveyor with a variable conveyance speed is arranged at the discharge port of the inorganic material mixer, a supply conveyor with a constant conveyance speed is connected to the stock conveyor, and a hopper of a kneading extruder is connected to the supply conveyor. A continuous supply structure for an inorganic kneaded material, characterized by: