JPS6320654Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an apparatus for discharging powder and granular materials that easily generate dust, such as cement raw materials, and is equipped with a mechanism for collecting dust generated from the powder and granular materials.

For example, when this type of powder is discharged by dropping it from a discharge device located at a relatively high place, such as a hopper, tripper, or stacker, and the powder is deposited below, a large amount of dust is generated and the work is carried out. This will worsen the environment and pollute the workplace with dust, but in such cases, the conventional dust prevention measures that have been commonly used include There is a system in which a long guide chute B is suspended, and the powder C is discharged through this guide chute B in order to prevent the generation of dust from the falling powder as much as possible. If it is made longer, the height of the powder C that is discharged and deposited will quickly reach the guide chute B.
If the length of the guide chute B is shortened, the effect of preventing dust generation will be reduced, and the suspended guide chute B will cause the dust to be removed from the wheel. The disadvantage was that the working range of work vehicles such as loaders was restricted, making it difficult to work. This idea was made in view of the above points, and is a powder discharge device with a dust collection mechanism that does not require a long member such as the guide chute to be suspended downward from the discharge port of the discharge device, and which is highly effective in preventing dust generation. This is what we are trying to provide.

Hereinafter, embodiments of this invention will be described based on the drawings. In FIGS. 2 to 4 showing an embodiment of the present invention, 1 is a cylindrical powder discharge cylinder whose lower end is open and which is connected to the discharge port of a discharge device A such as a hopper, a stripper, and a stacker. be.

Reference numeral 2 denotes a cylindrical dust collection cylinder with an open bottom end, and this dust collection cylinder 2 has an annular powder discharge tube between the opening edges 1a and 2c of both cylinders 1 and 2 in the discharge cylinder 1. Arrangements are made such that an outlet 3 is formed. Further, the dust collecting cylinder 2 has a truncated cone-shaped cylinder part 2a whose diameter is gradually reduced upwards continuously from a large-diameter cylinder part at the lower end, and a small-diameter cylinder part 2b is formed at the upper end of the truncated conical cylinder part 2a. Furthermore, the small diameter cylinder part 2b is inclined laterally from the middle, penetrates the wall surface of the discharge cylinder body 1, and projects outward. The small diameter cylindrical portion 2b is connected to a suction device 5 such as a suction fan via a dust collector 4, as schematically shown in FIG.

Next, the operation of the above embodiment will be explained. The powder and granular material in the discharge device A falls from the discharge port approximately at the center of the discharge cylinder 1, and is directed upward to the dust collection cylinder 2 and is gradually reduced in diameter along the circumferential surface of the cylinder part 2a. As shown in FIGS. 3 and 4, the particles are dispersed substantially uniformly in the direction, and fall downward in a cylindrical shape from the annular powder discharge port 3 at the lower end and are discharged.

In this state, the suction device 5 is operated to remove the dust collecting cylinder 2.
If suction is started from the lower end opening, the dust generated when discharging the powder will be transferred to the dust collection cylinder
and collected in the dust collector 4.

At this time, since the powder C is discharged in a cylindrical manner, the powder itself plays the role of a dust collection cylinder, and the dust collection cylinder 2 is not only near the discharge end opening but also relatively relatively from the lower end opening. Dust generated from powder and granular materials at distant locations is also collected.

In this way, when the granular material C is discharged from the discharge port 3, most of the dust generated from the granular material C is sucked into the dust collection cylinder 2 from the inner periphery of the granular material C. Dust generation from the granular material C is considerably prevented. In addition, in the drawings showing the embodiment, the discharge cylinder body 1
Although the dust collection cylinder 2 is cylindrical, it is not limited to this.

As explained above, the powder and granular material discharge device of this invention has a dust collecting cylinder with an open lower end placed inside a discharge cylinder with an open lower end, and an annular powder and granular material discharge port between the opening edges of both cylinders. The conventional guide chute described above is arranged so that the guide chute is formed so that a suction device is connected through the dust collector of the dust collecting cylinder, and the dust generated from the powder and granular material is sucked by the dust collecting cylinder. Compared to dust generation prevention mechanisms, the length of the discharge cylinder that protrudes downward from the discharge port of a discharge device such as a hopper, tripper, or stacker can be considerably shortened, so that the powder and granules that are discharged downward and accumulated can be reduced considerably. The height can be made sufficiently high and a large amount of powder and granules can be deposited, and when carrying out work such as transporting the accumulated powder and granules to another location using a transport device such as a wheel loader, the powder and granules can be easily Since the discharge port is located at a high place and there are no structural members that obstruct the work, it has excellent workability and improves work efficiency. Since a continuous cylindrical body is formed, a kind of sealed space is formed within this cylindrical powder body, and dust can be collected with a relatively small suction force. In addition, especially when the discharge device such as a dustper or stacker is movable, by mounting a dust collector and a suction device on the discharge device, the movement of the discharge device is not hindered and can be smoothly moved to a predetermined location.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing a conventional general dust generation prevention device, Fig. 2 is a schematic front view showing an embodiment of this invention, Fig. 3 is an enlarged central vertical cross-sectional view of the same, and Fig. 4 is a schematic front view showing a conventional general dust generation prevention device.
The figure is a bottom view of the same. DESCRIPTION OF SYMBOLS 1...Discharge cylinder, 1a...Opening edge, 2...Dust collection cylinder, 2a...Truncated conical tube part, 2b...Small diameter cylinder part, 2c...Opening edge, 3...Powder particles body outlet,
4... Dust collector, 5... Suction device, A... Discharge device, B... Guide chute, C... Powder.

Claims (1)

[Scope of utility model registration request] A dust collection cylinder whose lower end is open is arranged in a discharge cylinder whose lower end is open so that an annular powder discharge port is formed between the opening edges of both cylinders, and the dust collection cylinder is A powder discharge device with a dust collection mechanism, characterized in that a suction device is connected to the dust collector through a dust collector.