JPS6314972B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric powder sieve for sieving powders such as wheat flour, cocoa, etc., or lumps thereof, which can be easily used at home.

BACKGROUND ART A conventional electric powder sieve of this type has a configuration as shown in FIG. The details will be explained with reference to FIGS. 2 to 4.

In the figure, reference numeral 1 denotes a cylindrical container for storing powder to be sieved, and inside the opening at the lower end of the container 1, there are ribs 1a (three ribs in this drawing) extending toward the center integrally with the container 1. ) and these ribs 1a
A support portion 3 is formed in the center where the particles are concentrated.
A support shaft 4 that projects downward is fixed to the support portion 3.

A sieve 2 is rotatably mounted on the support shaft 4, and a retaining ring 5 positions the sieve 2 and prevents it from falling off. Further, a substantially U-shaped rib 6 having walls extending in a direction perpendicular to the rotating direction of the sieve 2 and spaced apart is formed on a part of the outer periphery of the sieve 2 .

7 is a handle, a switch 8 is attached to the upper part, and a battery 9 and a motor 10 are housed and fixed inside. The battery 9 and the motor 10 are connected by a positive lead 11, a switch 8, a common lead 13, and a negative lead 12. Reference numeral 14 is a lid of a battery chamber that houses the battery 9. Motor 1
An eccentric shaft 16 is fixed to the motor shaft 15 of 0,
The handle 7 is attached to the container 1 so that the eccentric shaft 16 fits into a gap between a substantially U-shaped rib 6 formed on a part of the outer periphery of the sieve 2.

The substantially U-shaped rib 6 and the eccentric shaft 16 fit together with a slight gap in the rotational direction of the sieve 2 and with a free space in the direction perpendicular to the rotational direction of the sieve 2. . Therefore, when the contacts of the switch 8 are closed and power from the battery 9 is supplied to the motor 10, the motor 10 starts and the eccentric shaft 16 rotates while slidingly contacting the inner wall of the substantially U-shaped rib 6, and the sieve 2 is moved eccentrically. It vibrates horizontally with an amplitude twice the amount of eccentricity of the shaft 16. This vibration sieved out the powder and lumps in the container.

Further, as can be seen from FIGS. 2 and 3, the shape of the container 1 is approximately a mortar-like shape. With this shape of the container, the opening area becomes gradually narrower in the direction of the sieving of the powder, and the passage of the powder is further narrowed by the several ribs 1a formed integrally with the container 1. Therefore, not only does the falling resistance of the sieved powder increase, but also pressure is applied to the sieved powder due to the vibration of the container 1, causing it to be compacted. As a result, a problem occurred in that the sieving time became long. In addition, battery-operated powder sieves suffer from two disadvantageous conditions: when the sieving time becomes long, the amount of powder that can be sieved by a given dry battery becomes extremely small, making it extremely difficult to use.

In order to overcome this drawback, it was necessary to increase the vibration of the container or the vibration of the sieve.
However, with any of these measures, problems remain, such as the large vibration of the handle, making it difficult to use, or the shortening of battery life, requiring an increase in the number of batteries.

Problems to be Solved by the Invention The present invention solves the above-mentioned conventional problems, and is an inexpensive electric flour powder that speeds up the sieving speed of powder without increasing the vibration of the container or sieve. The purpose is to provide a sieve.

Means for Solving the Problems In order to achieve the above object, the present invention makes the shape of the container approximately truncated conical so that the area through which the powder passes can be expanded approximately continuously in the sieving direction of the powder. I made it. In particular, the passage area of several ribs formed at the lower center of the container to support the sieve was made equal to or larger than the opening surface of the upper end of the container.

Effect: As the cross-sectional area of the container increases in the direction of the flour sieve, that is, the rib portion and the area through which the flour passes between the rib portion and the sieve, the resistance of the flour passing through this area decreases, and the flour flows through the sieve. It is no longer compressed.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG.

In the figure, reference numeral 21 denotes a cylindrical container, and near the opening at the lower end of the container 21 there are ribs 21a (three ribs in this embodiment) extending toward the center, and a support portion 23 at the center where these ribs are concentrated. is formed integrally with the container 21. A support shaft 24 that projects downward is fixed to the support portion 23 .

The container 21 is formed into a substantially truncated conical shape so that the area through which the powder passes increases substantially continuously and smoothly in the sieving direction of the powder.

A sieve 22 is rotatably mounted on the support shaft 24,
A retaining ring 25 positions the sieve 22 and prevents it from falling off. A part of the outer periphery of the sieve 22 has a sieve 22
A substantially U-shaped rib 26 is formed that extends perpendicularly to the direction of rotation of the shaft and has spaced apart walls.

27 is a handle, a switch 28 is attached to the top, and a battery 29 and a motor 3 are installed inside.
0 is housed and fixed. battery 29 and motor 3
0 is connected by a positive lead 31, a switch 28, a common lead 33, and a negative lead 32. 34 is a lid of a battery chamber that houses the battery 29. An eccentric shaft 36 is fixed to the motor shaft 35 of the motor 30, and the handle 27 is fixed to the motor shaft 35 of the motor 30.
6 is attached to the container 21 so as to fit into a gap between substantially U-shaped ribs 26 formed on a part of the outer periphery of the sieve 22.

The substantially U-shaped rib 26 and the eccentric shaft 36 are connected to the sieve 22.
They are fitted with a slight gap in the direction of rotation and with a free space in the direction perpendicular to the direction of rotation. Therefore, when the switch 28 is closed and power from the battery 29 is supplied to the motor 30, the motor 30 starts and the eccentric shaft 36 moves toward the substantially U-shaped rib 26.
The sieve 22 rotates while sliding on the inner wall of the eccentric shaft 3.
It vibrates in the horizontal direction with an amplitude twice the eccentricity of 6. The powder in the container 21 is sieved by the vibration of the sieve 22, but the powder passes through the sieve 2 without being resisted by the inner wall of the container 21 and the central rib 21a.
It falls to 2 and is screened by Speedy.

Effects of the Invention As described above, according to the present invention in which the container has a substantially truncated conical shape, the falling resistance of the powder is reduced, the compression of the powder due to vibration is eliminated, and the powder can be sieved in a short time. can.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an electric powder sieve which is an embodiment of the present invention, Fig. 2 is a sectional view of a conventional electric powder sieve, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is a sectional view of a conventional electric powder sieve. FIG. 3 is a perspective view showing a fitted state between the substantially U-shaped rib and the eccentric shaft. 21... Approximately truncated conical container, 21a... Rib, 2
2...Sieve, 24...Support shaft, 26...Substantially U-shaped rib, 2
7...Handle, 28...Switch, 29...Battery, 30...
Motor, 36...eccentric shaft.

Claims (1)

[Scope of Claims] 1. A cylindrical container with both ends open, a handle attached to the container and containing a built-in electric motor, and a sieve that vibrates when driven by the electric motor; An electric powder sieve, characterized in that a support portion for the sieve is formed, and the container has a lower end opening area larger than an upper end opening area.