JPS6140496Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a raw material input device for a batcher plant for inputting concrete materials (gravel, sand, cement) into a plurality of forced mixing mixers.

Batcher plants have traditionally installed multiple forced mixing mixers in order to increase the production volume of ready-mixed concrete, as well as a raw material input device that feeds concrete materials into these mixers.
Concrete materials were alternately introduced into the forced mixing mixer by sequentially switching the rotating chute of the material introduction device.

However, in conventional raw material charging equipment, there are large gaps between the lower part of the aggregate hopper and the upper part of the swing chute, and between the lower part of the swing chute and the charging chute, so dust leaks from these gaps when concrete material is charged. This is making the working environment worse. or,
Concrete materials are poured using the same chute for gravel, sand, and cement, so if moisture in the gravel or sand gets on the inner surface of the chute, the cement will stick to the inner surface of the chute, and this will cause the chute to deteriorate. There is a risk of blockage.

The present invention was developed in view of this point of view, and the opening part of the hopper and chute is made into a sealed structure to prevent dust from leaking to the outside. It is an object of the present invention to provide a raw material input device for a batcher plant which is provided separately to prevent blockage by concrete material.

Hereinafter, embodiments of the present invention will be described based on the drawings.

A cylindrical hood 4 with an airtight structure is disposed below the weighing hoppers 1, 2, and 3, and an aggregate gathering hopper 5 for receiving gravel and sand discharged from the weighing hoppers 1 and 2 is disposed on the hood 4. The aggregate gathering hopper 5
A cement collecting hopper 6 for receiving the cement discharged from the weighing hopper 3 is disposed within the container so that its lower part has a vertical tubular shape.

A drive device 7 is disposed at the lower part of the hood 4, and a vertical shaft 8 rotatably connected to the drive device 7 is inserted into the hood 4 by passing through the bottom of the hood 4, and the hood bottom penetrating portion and the vertical shaft are inserted into the hood 4. Hood 4 in the gap between 8
Seal 9 to prevent internal dust from leaking to the outside
A rotating chute 10 having an inclined portion is fixed to the upper end of the vertical shaft 8 so as to be located inside the hood 4, and a tubular chute having a vertical portion and an inclined portion is fixed at a predetermined position within the rotating chute 10. The cement charging chute 11 is fixed, the upper vertical part of the cement charging chute 11 and the lower vertical part of the cement collecting hopper 6 are connected by a rotary joint 12, and the periphery of the rotary joint 12 is closed off with a hood 13. Rubber seals 14a and 14b as shown in FIG. 2 are attached in a ring shape to the lower end discharge ports of the swing chute 10 and the cement inputting chute 11. Further, the axes of the vertical parts of the cement collecting hopper 6 and the cement charging chute 11 and the axis of the vertical shaft 8 are on the same perpendicular line.

A plurality of openings 15 (three in this embodiment) located on the same circumference are provided at the bottom of the hood 4, and the swinging chute 10 connects the openings 15 and the lower discharge port of the swinging chute 10 to a predetermined position. A charging chute 16 whose lower end is connected to a forced mixing mixer 18 is connected to the lower flange of each opening 15, and a rotating chute 10 is connected to the rotating chute 10 in the charging chute 16. When the cement inputting chute 17 reaches a predetermined position, the tubular cement inputting chute 17 which can communicate with the lower part of the cement inputting chute 11 and whose lower end is inserted into the forced mixing mixer 18 is connected. Further, a scraper 19 is installed at the bottom of the swinging chute 10 for dropping concrete material accumulated on the inner surface of the bottom of the hood 4 into the charging chute 16. 20 in the diagram
21 is a door of the hood 4, 21 is an inspection lid, and 22 is a limit switch for detecting when the swing chute 10 has come to a predetermined position.

When pouring concrete into any of the forced mixing mixers 18, the drive device 7 is driven to move the rotating chute 10 to the cement charging chute 11.
The lower part of the swing chute 10 is positioned above the predetermined opening 15 by rotating the swing chute 10 together with the swing chute 10 .

On the other hand, for example, if the weighing hopper 1 weighs gravel, the weighing hopper 2 weighs sand, and the weighing hopper 3 weighs cement, and the swing chute 10 is in a predetermined position, each weighing hopper 1, 2 , 3 gates are opened and concrete material is supplied.

Of the supplied concrete materials, gravel and sand slide from the aggregate gathering hopper 5 through the rotating chute 10 and are fed into a predetermined forced mixing mixer 18 through the charging chute 16, while cement is fed into the cement gathering hopper 6 and the cement feeding chute 16. It is fed into the forced mixing mixer 18 through the chute 11, 17.

Even if dust is generated when concrete material is poured, the swing chute part is covered with a hood with a sealed structure, so only a small amount of dust will leak out to the outside, and since cement passes through a special chute, it will not adhere to the inner surface of the chute. Never.

Dust accumulated on the inner surface of the bottom of the hood 4 is scraped off by a scraper 19 when the rotating chute 10 rotates, and is thrown into the forced mixing mixer 18 through the opening 15.

In addition, in the embodiment of the present invention, the case where three forced mixing mixers are installed is explained, but it is also possible to install any number of multiple forced mixing mixers, it can also be applied to a tilting mixer, and It can be carried out even if the mixer is placed directly in the area and the fixed feeding chute and cement feeding chute are omitted.
Of course, various other changes may be made without departing from the gist of the present invention.

According to the raw material input device for a batcher plant of the present invention, since the rotating chute part is covered with a hood with a closed structure, there is little leakage of dust to the outside.
Therefore, the working environment is good, and since a special chute through which cement passes is built into the chute through which gravel and sand passes, cement does not adhere to the inside of the chute through which gravel and sand pass, and the chute It is possible to achieve various excellent effects such as preventing blockage of the system and improving the operating rate of the entire equipment.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the raw material input device of the batcher plant of the present invention, Figure 2 is a detailed diagram of the part shown in Figure 1,
FIG. 3 is a view taken along the - arrow in FIG. In the figure, 4 is a hood, 5 is an aggregate gathering hopper, 6 is a cement gathering hopper, 7 is a drive device, 9 is a seal,
10 is a rotating chute, 11 is a cement charging chute, 16 is a charging chute, 17 is a cement charging chute, 18 is a forced mixing mixer, and 19 is a scraper.

Claims (1)

[Scope of utility model registration request] A rotating chute for gravel and sand with an input chute for cement inside is rotatably housed in a hood of a closed structure, and a plurality of input chute for gravel and sand that can communicate with the rotating chute are provided on the underside of the hood. 1. A raw material input device for a batcher plant, characterized in that a cement input chute is fixed to the input chute and can communicate with the input chute built in the rotating chute.