JPH03152023A - Disc feeder - Google Patents

Abstract

PURPOSE:To perform discharge of a quantitative amount at a constant speed without being influenced by a powder pressure and to perform push-up of a feed granular material by a method wherein an outer cylinder making contact with the upper surface of a table is mounted on the outer periphery of an inner cylinder mounted on a horizontal rotary table with a distance therebetween, a scraper by which a powdery material is discharged to the outside of an outer cylinder is mounted in a passage formed between an inner and outer cylinders. CONSTITUTION:A reduction motor 11 is mounted to a machine frame 1 and a horizontal rotary table 2 to a reduction drive shaft 12. A powdery material guide conical cylinder 7 is arranged on the upper surface of the table 2, and sucked in an inner cylinder 3 by means of an arm 13. A powdery material guide scraper 8 making contact with the table 2 is secured to a cylinder 14 mounted to the lower end of the conical cylinder 7. An inner cylinder 3 is secured to a table 2 with a distance (t) therebetween and a machine frame 1, and a powdery material feed hopper 9 is mounted to the upper part of the inner cylinder 3. A down outer cylinder 4 is mounted on the outer periphery of a disc 15 secured approximately to the middle of the inner cylinder 3, the lower end thereof makes contact with the upper surface of the table 2, end a space between the inner and outer cylinders 3 and 4 forms a powdery material passage 5. A powdery material discharge scraper 6 extending from the inner cylinder 3 to a side opening part 16 of the outer cylinder 4 is located in the passage 5, and a powdery material discharge port 17 is formed outside the opening part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a quantitative disc feeder for powder and granular materials.

"Conventional technology" In conventional disc feeders, the discharge port is located in the part of the hopper that receives the powder pressure, and the discharge amount is affected by pressure detection and tends to fluctuate depending on the powder remaining in the hopper. The mechanism is such that the upper part of the discharge port is discharged first, which tends to create rat holes and makes it difficult to carry out first-in, first-out operations.

``Problems to be Solved by the Invention'' The object of the present invention is to obtain a disk feeder that can discharge powder at a constant rate and a fixed amount without being affected by pressure detection, and can perform first-in, first-out processing of supplied powder and granules.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a horizontal rotary table on the machine frame, an inner cylinder is provided on the table at a distance, and the upper surface of the table is attached to the outer periphery of the inner cylinder. A disc feeder is provided with an outer cylinder in contact with the inner cylinder to form a powder passage between the inner and outer cylinders, and a powder guide conical cylinder concentric with the inner cylinder is provided in the passage with a powder discharge scraper to the outside of the outer cylinder. The powder guide scraper is fixedly provided inside the conical cylinder, and a powder guiding scraper in contact with the table is fixedly provided at the lower part of the conical cylinder.

``Operation'' Therefore, the powder descending into the inner cylinder 3 from the hopper 9 provided at the upper end of the inner cylinder 3 is guided by the inclined surface of the conical cylinder 7 and the guide scraper 8, and is moved from above the above-mentioned interval to the rotary table 3.
Advance into the passage 5 above. This advancing portion 10 forms an angle of repose α and is not affected by the weight of the powder in the hopper 9 and the inner cylinder 3. This portion 10 moves inside the passage 5 as the rotary table 2 rotates at a constant speed. It rotates along the outer periphery of the inner cylinder 3 and is discharged stationary to the outside of the outer cylinder 4 along the discharge scraper 6 at a constant speed.

``Example'' A reduction motor 11 is provided on the machine frame l, a horizontal rotary table 2 is provided on the reduction drive shaft 12, a powder guiding conical cylinder 7 is arranged at the center of the upper surface of the table 2, and an inner cylinder 3 is provided with an arm 13. Fix it concentrically inside. A cylinder 14 that reaches the table 2 is provided at the lower end of the conical cylinder 7, and a powder guiding scraper 8 that is in contact with the table 2 is fixed to the cylinder 14. The inner cylinder 3 is fixed to the machine frame l on the table 2 at a distance t, and a powder supply hopper 9 is provided on the upper part of the inner cylinder 3. A horizontal disk 15 is fixed to the middle of the inner cylinder 3, and a downwardly directed outer cylinder 4 is fixed to the outer periphery of the disk 15, with its lower end touching the upper surface of the table 2, and the inner and outer cylinders .4 can be used as a powder passage 5. As shown in FIG. 2, this passage 5 is provided with a powder discharge scraper 6 that extends from the inner cylinder 3 to the side opening 16 of the outer cylinder 4.
7. In the figure, the reference numeral 18 is a lower surface support roller of the rotary table 2, and the reference numeral 19 is a tip support rod of the scraper 8.

"Effects of the Invention" Since the present invention is configured as described above, the powder that has advanced into the passage 5 is transferred to the rotary table 2 without being affected by the load of the powder supplied into the inner cylinder 3. Not only can the stationary gas be continuously supplied to the next process at a constant speed, but also the inner cylinder 3
Inside, a first-in, first-out system is implemented, which has the effect of ensuring constant supply without stagnation.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a disk feeder of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an enlarged longitudinal cross-sectional view taken along line A--A in FIG. L...Machine frame, 2...Horizontal rotary table, L...Interval, 3
...Inner cylinder, 4..Outer cylinder, 5..Powder passage, 6..Powder discharge scraper, 7..Powder guide conical tube, 8..Powder guide scraper.

Claims (2)

[Claims] (1) A horizontal rotary table is provided on the machine frame, an inner cylinder is provided at a distance above the table, and an outer cylinder is provided on the outer periphery of the inner cylinder in contact with the top surface of the table to form a powder passage between the inner and outer cylinders. death,
A disk feeder in which a scraper for discharging powder to the outside of the outer cylinder is provided in the passage. (2) Claim (1) wherein a powder guide conical cylinder concentric with the inner cylinder is fixedly provided inside the inner cylinder, and a powder guide scraper in contact with the table is fixedly provided at the lower part of the conical cylinder. Disc feeder as described.