JPH08133473A - Blender device for mixing and transferring powders - Google Patents

Abstract

PURPOSE: To blend the granule with the compressed air, and to feed it. CONSTITUTION: A stirring nozzle 20 to eject the compressed air upward into a tank 2 is fitted to the lower part of a granule storage tank 2 where the granule is stored and discharged from the lower part by providing the compressed air, and the granule stored in the tank 2 is blended and stirred with the compressed air from the nozzle 20. The compressed air having the pressure sufficient to carry the granule in the tank 2 is ejected from the stirring nozzle 20. The granule may be blended and, discharged and transferred by the ejection of the compressed air from the stirring nozzle 20. The granule is stirred to be surely blended thereby. Blending as well as transfer of the granule can be achieved with the compressed air ejected from the stirring nozzle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blender device for transferring and blending powdery particles with pressurized air.

[Prior art]

[0002] Fig. 5 shows a mixed transportation procedure for a normal powdery or granular material by compressed air. The transport device 50 includes a storage tank 51 that stores powder and granules, and a transport pipe 52 that transports the powder and granules stored in the tank 51 by an air flow. The transport pipe 52 has a predetermined interval. Install the booster 53. The tank 51 has a cylindrical shape in which the upper part is hermetically closed and the lower part is squeezed into a conical shape. The top air supply pipe 5 is used to supply the powder and granules from above with appropriate means and to push out the stored powder and granules.
4, and a number of lower jet nozzles 55 are attached tangentially to the conical surface on the lower conical portion 51a. As a result, the powder or granules to be stored are sent to the transport pipe 52 by the supply of the pressurized air from the upper top air supply pipe 54, and
The jetting of pressurized air from the lower jet nozzle 55 prevents adhesion to the conical surface or formation of a bridge. In the figure,
L1 is a supply line for the top air supply pipe 54, L2
Is a supply line for the jet nozzle 55, L3 is a supply line for the booster 53, and supply lines L2, L3
Are set to a predetermined pressure by regulators 57 and 58, respectively, and are connected to high pressure air supply receivers 56, respectively. In the figure, reference numeral 60 denotes a discharge control valve.

[0003]

According to the above-mentioned transportation method, there is no problem if the granular material is lightweight and slippery,
In the case of PVA powder, scale-like or other granular material having a large friction coefficient, the granular particles are bonded to each other in the storage tank to form a lump, and there is a problem that a reliable blender cannot be performed.

In view of the above points, the present invention has an object of blending powder particles with pressurized air and sending them out.

[0005]

A blender for mixing and transferring powders and granules according to the present invention for achieving the above object is a powder and granule storage tank for storing powders and granules, applying pressurized air and discharging the powders from below. The gist of the present invention is to install a stirring nozzle for ejecting pressured air upward in the tank at the lower part of the above, and mix and stir the powder particles stored in the tank with the pressured air from the nozzle.

At this time, pressure air having a pressure for transporting the powder or granules in the tank is ejected from the agitation nozzle, and the air is ejected from the agitation nozzle so that the powder or granules are stirred and discharged and transported. It may be performed.

[0007]

[Operation] A stirring nozzle for ejecting pressurized air upward is installed in the lower portion of the granular material storage tank, and the granular air in the tank is agitated by the ejected pressurized air. Therefore, the granular material is dispersed without forming a lump, and the blender is surely performed.

[0008]

FIG. 1 to FIG. 4 show an embodiment of the present invention.
The blender device 1 for mixing and transporting of the present invention comprises a powder and granular material storage tank 2 whose upper part is hermetically closed and whose lower part is squeezed into a conical shape, and a transportation pipe (not shown in FIG. 5) connected to the lower part of the storage tank 2.
(Corresponding to 52) of the above), the storage tank 2 is provided with a top air supply pipe 5 together with a hopper 4 for receiving powder particles, and a large number of jet nozzles 6 are tangentially attached to the conical portion 2a. . 7 and 8 are hoppers 4, respectively
The electromagnetic on-off valve attached to the lower part of the tank and the lower part of the tank 2 is shown.

Reference numeral 10 denotes a vent pipe, which is attached to the upper part of the tank 2 and has its upper end connected to the upper part of the hopper 4. In addition, in the upper opening of the hopper 4, a gas-solid separating member 1 such as a wire mesh is provided.
1 is stretched. However, the upper end of the vent tube 10 may be connected to the bag type dust collector 12. Reference numeral 13 indicates an electromagnetic on-off valve.

An agitation nozzle 20 is attached to the lower part of the powder and granular material storage tank 2 and is designed to eject pressurized air upward into the tank. The agitation nozzle 20 is shown in FIGS. As shown in FIG. 4, a bottom plate 21 is attached to the bottom of the tank 2, and the perforation 22 is formed in the bottom plate 21 at an angle α slightly outward from the vertical line and at an angle β in the horizontal direction, that is, in the circumferential direction. The stirring nozzle 20 is connected to this.

Reference numeral 23 designates a discharge pipe interposed between the tank 2 and the electromagnetic on-off valve 8, and a high pressure air jet nozzle 24 for preventing bridge is tangentially attached to the pipe 23. However, the illustrated example shows only one nozzle 24, but preferably 2 to
Install 3 pieces.

In the above structure, when the powder and granules supplied to the hopper 4 are blended and transported, the electromagnetic on-off valve 7 is opened, the powder and granules in the hopper 4 are supplied into the tank 2, and after a predetermined amount is supplied, Close the valve. Then, pressurized air is jetted from the stirring nozzle 20 into the tank to stir the powder or granules. On this occasion,
The pressure air ejected from the nozzle 20 is ejected slightly outward and in the circumferential direction through the perforations 22, so that the powder and granules can be efficiently stirred. In addition, the pressurized air that has been jetted out passes through the vent pipe 10 and the wire mesh 11 on the upper part of the hopper 4.
From or through the dust collector 12.

Next, when the powdery or granular material is transported, the electromagnetic opening / closing valve 13 of the vent pipe 10 is closed, the electromagnetic opening / closing valve 8 is opened, and the injection from the stirring nozzle 20 is continued. At this time, it is preferable that the amount of pressurized air with respect to the stirring nozzle 20 is the same as the amount supplied from the top air supply pipe 5. As a result, the ejection of the compressed air from the nozzle 20 can be used as the transportation air by closing the electromagnetic on-off valve 13 of the vent pipe 10 although the ejection of the pressurized air is from the lower side to the upper side. Can be done by

Alternatively, the jetting from the stirring nozzle 20 may be performed only with the blender, and the blended powdery particles may be transported by high pressure air from the normal top air supply pipe 5. Alternatively, the stirring nozzle 20 and the top air supply pipe 5
Both may be used.

[0015]

As described above, according to the present invention, a stirring nozzle for ejecting pressurized air upward is installed in the lower portion of the powder or granular material storage tank, and the powder or granular material stored in the tank is pressurized with air. Since the mixing and stirring are carried out by means of, it is possible to surely stir the powdery material. At this time, the pressure air ejected from the stirring nozzle is adjusted to a pressure suitable for transporting the powder or granular material, so that the pressure air jetted from the agitation nozzle can perform both stirring and transportation of the powder or granular material.

[Brief description of drawings]

FIG. 1 is a front view of a blender for transferring and mixing powder and granules of the present invention.

FIG. 2 is a plan view with the supply hopper in FIG. 1 removed.

FIG. 3 is a cross-sectional view showing how to install a stirring nozzle.

FIG. 4 is a view taken along line XX in FIG.

FIG. 5 is a diagram of a mixed transportation procedure of compressed air for powder and granules.

[Explanation of symbols]

 1 Blender device for powder and granular mixture transfer 2 Powder and granular material storage tank 20 Stirrer nozzle

Claims (2)

[Claims] 1. A stirrer nozzle for ejecting upwardly pressurized air into the tank is attached to the lower part of the granular material storage tank for storing the granular material and applying pressured air to discharge it from below. A blender device for mixing and transferring powder particles, wherein the powder particles are mixed and stirred by pressurized air from the nozzle. 2. The agitation nozzle ejects pressurized air having a pressure for transporting the granular material in the tank, and the agitation nozzle ejects the pressurized air to agitate the granular material and discharge and transport the granular material. The blender device for mixing and transferring powder and granules according to claim 1.