JPS6121479Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a rotary feeder with a V-shaped blade rotor used for supplying or discharging granular or small-sized materials to the transport system in an air transport system. The present invention relates to a device for reducing crowding.

As is well known, in a rotary feeder, a rotor is inserted into a cylindrical casing with a small gap.
This is rotated to supply or discharge powder, granules, or small lumps to or from the pressure system while maintaining an airtight state. Due to its structure, the blades of the rotor are attached to the upper opening of the casing. This can cause various inconveniences such as shock, vibration, abnormal noise, etc. by getting caught in the objects being handled, and may even make operation impossible.

For this reason, various measures have been taken to reduce this biting, and each has been effective, but one method is to use a V-shaped blade rotor.
This method significantly reduces the jamming rate compared to the case where a general flat rotor is used. However, even if a V-shaped blade is used, the performance may still be insufficient depending on the material being handled, so this invention aims to further reduce the biting rate. It is possible to reduce the rate.

Examples will be described below with reference to the drawings. FIG. 1 is a developed view of a rotor 1 having V-shaped blades 2, and the rotor 1 rotates in the direction of the arrow.

This V-shaped blade 2 does not face each other directly like a normal flat blade, but forms a certain angle when biting a granular or small-sized object between it and the 4 ends of the upper opening of the casing 6. , the object becomes like a pair of scissors that cannot be cut, and the object slides along the blade, reducing the cutting rate and reducing the impact caused by the cutting. It also has a big effect on

However, when the rotor 1 rotates, the end point of the scissors blade, that is, the part A, finally reaches the open end of the casing, so the object that has slipped along the cutting edge to the part A has no place to escape.
Biting occurs in the area. This phenomenon cannot be prevented in any way.

Therefore, as a measure to improve the problem of the part A being jammed, the present invention is designed to suppress the flow of objects into the A part and secure the empty space.As shown in the partial plan view of FIG. was attached to the casing 6 at right angles to the axial direction. This distribution plate 5 allows particles and small lumps to be handled from the upper opening 4 of the casing 6 to the rotor 1.
The material to be handled is suppressed from flowing into the A section, and the A section is not filled with the material to be handled, leaving an empty space.Not only are the objects caught in the A section itself, but also grains and lumps that have slipped from the sides are also trapped in this empty space. Since it is accommodated in the space, the biting-off phenomenon is dramatically reduced. This state is shown in FIG. 3, a partial front sectional view. Further, the partial side cross-sectional view of FIG. 4 shows the distributing plate 5 in a disposed state.

Although the installation of this distribution plate 5 alone can bring about a considerable effect in reducing the biting rate, in the present invention, in order to further improve the effect, the distribution plate 5
Two partition plates 8 having a width equal to or narrower than the width of the distribution plate 5 are provided on the lower rotor 1 side. That is, the small chamber 9 is provided to ensure that the A section of the rotor 1 is kept as an empty space. FIG. 5 is a developed view of the rotor 1 showing an embodiment in which the small chamber 9 is provided.

That is, the distribution plate 5 provided in the casing 6
Two partition plates 8 are placed between the V-shaped blades 2 on the side of the rotor 1 immediately below the blades 2, so that the outer diameter surface thereof is at least 1 inch larger than the circumferential outer diameter of the rotor 1 and the particle diameter of the grains and agglomerates to be handled.
It is set so that it is submerged. This is done so that objects to be handled that slide from the sides can easily fall into the small chamber 9 and be accommodated therein.

FIG. 6 is a partial front sectional view showing an embodiment of the distribution plate 5 provided with a partition plate 8. As shown in FIG. As is clear from this figure, the empty space is reliably secured in the A part of the rotor 1, and almost no objects to be handled reach the A part while the rotor 1 is rotating, and the effect of reducing jamming is complete. be.

7 is a modification of FIG. 5, and is adopted in order to reduce the reduction in the effective volume of the rotor 1 depending on the nature of the object to be handled.

As described above, the present invention greatly contributes to reducing the biting rate by attaching a distribution plate and a partition plate to a rotary feeder having a V-shaped blade rotor.

[Brief explanation of the drawing]

Figure 1 is a developed view of the V-shaped blade, Figure 2 is a partial plan view of the case where a distribution plate is provided in the upper opening of the casing, and Figure 3 is a partial front cross-sectional view of the casing. The figure is a partial side cross-sectional view. Figure 5 is a developed view of the rotor with partition plates.
The figure is also a partial front sectional view. Moreover, FIG. 7 is a rotor development view showing a modification of FIG. 5. 1...Rotor. 2...V-shaped blade. 3...Side plate. 4...Top opening. 5... Sorting plate, 6... Casing. 7...Rotor shaft. 8... Partition board. 9...
Small room.

Claims (1)

[Scope of utility model registration request] In a rotary feeder with a V-shaped blade rotor that handles granular or small-sized materials, a flat or mountain-shaped distribution plate is inserted in the center of the upper opening of the casing in a direction perpendicular to the axis, and the distribution plate is A device for reducing jamming in a rotary feeder, characterized in that a partition plate is provided on the circumference of the central part of the rotor side immediately below, the outer diameter of which is depressed by at least one particle diameter of the material to be handled.