JP2002292339A - Vibrating sieve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibrating sieve which prevents the scattering of powders upward during an operation. SOLUTION: A frame 6 on the periphery of the vibrating sieve 2 contacting the powders is slanted to open upward. Even when the pressure of the powders is increased by being pushed to the frame 6 by vibration, since the frame is slanted, the increase of the pressure is eliminated by moving the powders slightly diagonally upward, preventing the upward scattering of the powders from the periphery of the frame 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sieve for sieving powder, and more particularly to a vibrating sieve which prevents powder from blowing up around the sieve during operation.

[0002]

2. Description of the Related Art In a mixed powder, various powders such as sugar, baking powder, and milk powder are mixed at a predetermined ratio in addition to flour. When producing such a mixed powder, each powder must be sieved with a vibrating sieve to ensure that the components are evenly mixed and that no "dama" occurs before being put into the mixing mixer. Was.

FIG. 5 shows an example of a conventional electric vibrating sieve. As shown in FIG. 5, the vibrating sieve 30 is covered with a metal frame 32, and has a sieve 36 having a predetermined wire mesh 34 at the bottom, a leg 10 that vibrates the sieve 36, And a vibrating motor 12 for generating vibrations.
When the vibration motor 12 is driven, the sieve 36 vibrates, and the powder is fed into a mixer (not shown) while sieving the powder.

[0004]

However, the sieve 36
When a powder such as flour is put into a sieve and sieved, the flour may blow upward from around the sieve 36. This does not occur so much when a small amount of powder is put into the sieve 36 and is sieved, but it is known that it occurs remarkably due to various conditions such as putting a large amount of powder or vibrating strongly. .

Conventionally, the amount of powder to be put into the sieve 36 has been limited or the vibration to be applied has been reduced. When the amount to be charged is divided, the number of powders to be added increases, and it takes time, and when the vibration applied to the sieve 36 is weakened, the processing capacity is increased. In some cases, it took longer to process.

In some cases, the sieve 36 is provided with a lid.
When the lid is put on, the inside cannot be seen, making it difficult to grasp the working state. Further, since the sieve 36 is vibrated by the vibration motor,
During the operation, the lid must be firmly fixed to the sieve 36, and there is a problem that it takes time to remove and fix the lid.

[0007]

Means for Solving the Problems In order to solve the above problems, the present inventors have observed the phenomenon of powder blowing up, and the blowing up has no place for the powder pressed against the side frame by vibration. Notice that it is spouting upwards,
Focusing on this point, the vibrating sieve was configured as follows.

That is, the frame around the vibrating sieve in contact with the powder was inclined so as to open upward. Specifically, the frame holding the periphery of the net is inclined so as to open upward, or the frame is formed vertically as in the past, and an inclined plate that opens upward inside the frame. Was provided. As a result, even if the pressure of the powder is partially increased due to the vibration and pressed against the frame, the rise of the pressure is eliminated by slightly moving the powder obliquely upward because the frame is inclined. Therefore, the phenomenon of powder blowing up from around the frame does not occur.

The shape of the vibrating sieve is not limited to a circle, but may be a square, a circle, or the like. The inclined portion is preferably formed so as to cover the periphery of the powder accommodated in the vibrating sieve, but even if it is not from the bottom of the vibrating sieve, that is, from the position in contact with the net to the upper end of the frame body, And may not necessarily protrude above the upper surface of the stored powder.

[0010] Further, the inclination angle around the sieve is preferably about 5 to 25 degrees from the vertical, and can be changed according to the intensity of vibration, the locus of vibration, the type of powder, and the like. For example, the inclination is reduced when the vibration is weak, and the inclination is increased when the vibration is strong or the powder easily blows up. Also, it is not necessary to provide an inclination on the entire circumference of the frame. For example, when the vibration is reciprocating, the inclination may be provided at both ends in the vibration direction. Also, the vibration of the vibrating sieve need not be due to the eccentric motor,
Vertical movement may be added or only reciprocating movement may be performed. Also, the inclined portion may have elasticity. That is, the frame and the inclined plate are formed of an elastic body, or are attached with elasticity so that the inclination angle of the inclined plate varies. Also, the inclined plate
A hole may be appropriately formed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vibrating sieve according to the present invention will be described.

As shown in FIGS. 1 and 4, the vibrating sieve 2 vibrates the sieve 8 including the net 4 and the frame 6 holding the net 4, a leg 10 supporting the sieve 8, and the sieve 8. Vibration motor 1
2 and so on.

The mesh 4 is made of metal having a diameter of about 1 m, and has meshes of a predetermined size. The net 4 is not made of metal,
It may be detachable and replaceable with a desired eye. The frame 6 is made of metal and is inclined so as to open upward by about 10 degrees with respect to the vertical as shown in FIG.
And the net 4 is held. The container 20 has an outlet 22
Is provided.

The leg 10 is formed of a spring and supports the sieve 8 so as to vibrate appropriately. Note that the leg 10 need not be a spring. In the vibration motor 12, the weight 24 is attached to the rotating shaft in an eccentric state, and is directly fixed to the bottom of the container 20. The vibration motor 12 has a rotation speed, a weight of the weight 24,
By changing the eccentric state or the like, the vibration state at the time of driving can be appropriately adjusted.

Next, the operation of the vibrating sieve 2 will be described.

The powder is put into the vibrating sieve 2 and the vibration motor 12 is driven. The vibration generated by the vibration motor 12 is
The powder is transmitted to the sieve 8 through the mesh 0, and the powder falls from the mesh of the net 4 by vibration. At this time, since the frame 6 is provided to be inclined so as to open upward, even if the powder is pressed by the frame 6 due to vibration, the powder is forced to move diagonally upward along the frame 6. As a result, the upward force is dispersed, and the powder does not blow up directly from the frame 6.

Next, another example of the vibrating sieve will be described.

In this example, as shown in FIG. 2, the frame 6 of the vibrating sieve 2 is configured vertically, the net 4 is attached to the frame 6, and the inclined plate 3 is attached to the inner periphery of the frame 6. I have. The inclined plate 3 is a metal plate and is provided all around the inside of the vibrating sieve 2 so as to reach the upper end of the frame 6 from the net 4 and is provided so as to be opened upward by about 10 degrees with respect to the frame 6. ing.

In this case, even if the powder is contained in the vibrating sieve 2 and vibrated, the powder is in contact with the inclined plate 3, so that the force from the lateral direction is dispersed and the upward blowing is prevented. Is prevented.

It should be noted that the inclined plate 3 may not be formed of a continuous metal plate all around, but may be partially divided and combined. Further, as shown in FIG. 3, it is not necessary to reach the upper part of the frame 6, and the shape of the frame 6, the vibration motor 1
Inclined plate 3 partially different in shape as appropriate according to the characteristics of
May be arranged. However, it is preferable that the upper end of the inclined plate 3 is in close contact with the frame 6 because the powder does not blow up from between the inclined plate 3 and the frame 6.

Further, a vibration absorbing material (not shown) such as rubber may be provided on the inner surface of the frame 6. By providing the vibration absorbing material, no pressure is applied to the powder from the frame 6 and no blow-up occurs. Alternatively, the frames 6 may be stacked in two stages, and a rubber portion (not shown) may be provided between the frames 6.

[0022]

According to the vibrating sieve of the present invention, the inclined surface which is opened upward is provided on the inner peripheral surface of the powder container of the vibrating sieve, so that the powder blows up from the periphery of the sieve during operation. Nothing. Therefore, a large amount of powder can be put into the vibrating sieve for processing, and the processing capacity can be improved. Further, the trouble of monitoring such as blow-up is reduced, and the number of times of cleaning around the vibrating sieve is reduced as much as possible. be able to.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a vibrating sieve according to the present invention.

FIG. 2 is a sectional view showing another embodiment of the vibrating sieve according to the present invention.

FIG. 3 is a sectional view showing another embodiment of the vibrating sieve according to the present invention.

FIG. 4 is a perspective view showing an embodiment of a vibrating sieve according to the present invention.

FIG. 5 is a view showing a conventional vibrating sieve.

[Explanation of symbols]

 2 Vibrating sieve 3 Inclined plate 4 Net 6 Frame 8 Sieve 10 Leg 12 Vibration motor

Claims (3)

[Claims] 1. A vibrating sieve comprising a mesh portion and a frame body for holding the mesh portion, wherein the inner periphery of the frame body is provided in a vibrating sieve for accommodating powder inside the frame body and sieving the powder. A vibrating sieve formed on an inclined surface that opens upward. 2. A vibrating sieve comprising a net portion and a frame for holding the net portion, wherein the vibrating sieve contains powder inside the frame and sieves the powder. A vibrating sieve characterized by having an inclined portion that opens toward the surface. 3. A mesh comprising: a net; a frame for holding the net; a leg for vibrating a sieve comprising the net and the frame; and a vibration motor attached to the sieve. A vibrating sieve for accommodating powder inside a frame and sieving the powder, wherein the inner peripheral surface of the frame is formed as an inclined surface that is opened upward.