JPS6052966B2 - Nozzle for powder transfer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nozzle for a powder or granular material transfer device, and particularly to a nozzle having a vibrating device inside.

Conventional nozzles used in devices that use compressed air to transfer powder and granules from one storage location to another, such as the hopper of a processing machine, do not have a vibrating device, so they can handle powder and granules with poor fluidity. In this case, bridging and dead stock occurred in the storage container, making it difficult to transfer the powder and granules thoroughly.

Therefore, in order to transfer the powder particles remaining in the corners of the container without leaving any residue, the nozzle must be constantly moved, which requires extra labor. The present invention eliminates the above-mentioned drawbacks by incorporating a vibrating device into the nozzle for a transfer device, and also has a simple structure that eliminates the need to add a special power source to drive the vibrating device, and achieves a suction effect. It is an object of the present invention to provide a nozzle for a transfer device with a high efficiency. Embodiments of the invention will be described in detail below with reference to the drawings.

A nozzle 1 for a transfer device according to the invention is shown in section in FIG. A suction tube 4 is provided.

An upper housing 2 and a lower housing 3 made of aluminum casting, for example, are attached to the suction tube. The upper housing 2 has a hole in the center through which a suction tube 4 passes, and a connecting part 5 at the top to which a compressed air pipe 6 is connected.
has. The upper housing is further provided with a passage 7 communicating with the connecting part 5. The lower housing has a hole in the center through which a suction tube 4 passes, and a cavity 13 for delivering compressed air to an ejection hole 14 of said tube. ; An annular ball ring 9 is housed in the upper housing along with the intermediate ring 8, and a plurality of pores 11, for example, 4 to 1 square, are provided in the circumferential wall of the ball ring 9 at a constant angle of inclination to the tangential direction. (See Figure 2).

A ball 10 is housed in a running path 12 defined between the inner wall of the ball ring 9 and the outer wall of the suction tube 4. With such a configuration, compressed air enters the passage 7 from the vibrator 6 via the connecting portion 5, and is further blown out from this passage at an angle into the running path 12 from the numerous pores 11 of the ball ring. Therefore, the ball 10 is rotated at high speed within the running path 12 by this jet flow, and vibrates the nozzle. The compressed air passing through the passageway 12 enters upwardly through the cavity 13 in the lower housing 3 through a number of circumferential ejection holes 14 provided in the suction vibrator 4 and rises within the vibrator 4 .

Therefore, a negative pressure is generated at the tip of the suction vibrator, and the powder is sucked into the vibrator. A guard 15 is attached to the lower part of the lower housing 3 so as to surround the tip of the suction vibrator 4,
This protects the tip and also facilitates the intrusion of powder and granules.

The guard 15 is firmly attached to a hole provided in the upper housing 2 with a fixing screw 16. FIG. 3 diagrammatically shows the overall structure of a powder transfer device including a nozzle according to the present invention.

The rectangular body 19 of the powder separation device includes a transfer chamber 23,
One end of a flexible hose 18 is connected to its upper side. A filter bag 20 is attached to the top of the main body 19 by a retaining ring 21 . A transparent lid made of acrylic is fixed to the front surface of the main body 19 with mounting screws 22. An electronically controlled level control device 25 is located near the center of the transfer chamber 23.
is installed. An outlet tube 25 is attached to the lower part of the main body, from which the powder is discharged into a hopper 26 of a manufacturing machine, for example, a plastic injection molding machine. Ru. The other end of the flexible hose 18 is connected to the suction tube 4 of the nozzle.

When the compressed air source is connected to the vibrator 6, the nozzle 1 vibrates and sucks the powder into the container 17 as described above.

The sucked powder enters the transfer chamber 23 of the powder separation device attached to the upper part of the hopper 26 of the manufacturing machine via the flexible hose 18. Here, the mixture of powder, granules, and air is transferred to the deflector plate 2.
4, the granular material having a high specific gravity is discharged into the hopper 27 through the outlet tube 26, while the air having a low specific gravity is discharged upwardly through the filter bag 20. When the material is sufficiently transferred into the hopper 27, the transfer chamber 2
Once the granules fill the chamber 3 and reach the level control device 25, the integrated electronics (not shown) prevent the automatic entry of compressed air, thus stopping the transfer of material.

Transfer begins automatically again when the material moves below the level control device due to consumption of the production machine. The nozzle for a powder transfer device according to the present invention uses compressed air for transfer to vibrate the nozzle itself, so no additional power is required to drive the vibrator.

Therefore, the structure is simple, the power consumption is low, and the consumption of compressed air is also extremely low. In addition, the vibrating device built into the nozzle ensures smooth and continuous transfer of the powder and granules without causing bridging or dead stock.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing a nozzle for a powder or granular material transfer device according to the present invention, FIG. 2 is a cross-sectional view taken along line 1 and 2 in FIG. 1, and FIG. It is a front view diagrammatically showing a powder and granular material transfer device including. DESCRIPTION OF SYMBOLS 1...Nozzle, 2...Upper housing, 3...Lower housing, 4...Suction tube, 5...Connection part, 6... ... Compressed air vibe, 7 ... Passage, 9 ... Ball ring, 10 ... Ball, 11 ... Pore, 12 ... ... Runway, 13 ... Blank space, 1
4...Blowout hole, 15...Guard, 18
...Flexible hose, 19 ... Main body, 2
0...Filter bag, 23...Transfer chamber, 25...
...Lubel control device, 26...Exit tube, 27I4e●●●●hopper.

Claims (1)

[Claims] 1. A nozzle operated by compressed air that is connected to a powder separator with a hose, the nozzle having a suction tube having an inclined tip and a plurality of peripheral ejection holes near the tip, and a suction tube in the center. an upper housing having a hole through which a suction tube passes through and a connecting part to which a compressed air pipe is connected at the upper part; a lower housing having a hole through which a suction tube passes through the center and a cavity for sending compressed air to the tube; an annular ball ring housed in an upper housing having a plurality of pores provided in the circumferential wall at an inclined angle; and a ball housed between the ball ring and the outer wall of the suction tube; For a powder or granular material transfer device, characterized in that compressed air is injected from a pore to cause the balls to rotate at high speed on a travel path defined between an inner wall of a ball ring and an outer wall of a suction tube, thereby generating vibrations. nozzle.