JPH0631827U - Liquid and powder mixing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To efficiently mix liquid and powder. [Structure] A hood (2) is placed on the upper part of a mixing tank (1) containing a liquid, and a suction port (5) communicating with a vacuum source is opened in the hood. At the bottom of the mixing tank (1), a powder / granule supply port (9) is provided so as to open below the liquid surface. The powder and granules are supplied to the mixing tank (1) under reduced pressure and are sucked into the liquid.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid / powder / granule mixing device capable of efficiently mixing a liquid / powder / granule.

[0002]

[Prior art]

 When mixing a liquid with powder or granules, conventionally, an apparatus has been used in which the granules are dropped from above the liquid stored in a mixing container and agitated by a stirring means. Often scatters on the upper surface of the liquid and stains the surroundings, or it becomes powdered as it is and is not easily mixed in the liquid, and it often takes a long time to mix. Therefore, an apparatus in which powder particles are fed under pressure has been proposed to improve such a defect, but the structure is complicated and it is not economically obtainable.

[0003]

[Problems to be solved]

 An object of the present invention is to provide a mixing device for liquid and powder that can efficiently mix the powder and liquid.

[0004]

[Means for solving problems]

 According to the present invention, a supply port that communicates with a hopper for powder and granules is opened below the liquid level in the mixing tank, and a suction port that communicates with a vacuum source is provided above the mixing tank, and the upper portion is decompressed. There is provided a mixing device for liquid and powder particles, which is characterized in that the powder particles are supplied and mixed below the liquid surface in the state, and the above object is achieved.

[0005]

[Action]

 By depressurizing the upper part of the mixing tank, the defoaming action in the liquid is performed, and the apparent specific gravity of the liquid is reduced. Then, the powder or granular material supplied from below the liquid surface of the liquid easily flows into the liquid due to the pressure difference between the hopper and the tank and the defoaming action, and mixes extremely well.

[0006]

【Example】

 A description will be given below with examples. FIG. 1 is an explanatory view showing the overall configuration of the mixing apparatus of the present invention. In the figure, a hood (2) for closing the upper part of the mixing tank (1) for containing a liquid is provided so as to be able to move up and down, and penetrates through the hood (2) to provide a planetary structure. -Mixer-Other suitable stirring shafts (3) are provided, and stirring blades (4) are attached to the stirring shafts (3). A suction port (5) communicating with a vacuum source is opened in the hood (2).

The granules (6) are stored in a hopper (7), and the hopper (7) passes through a valve (8) such as a ball valve and the liquid level of the mixing tank (1). It connects to the supply port (9) that opens at the bottom. Although the supply port (9) is provided on the side wall at the bottom of the mixing tank (1) in the figure, it may be opened at the bottom or a pipe may be provided from the top of the tank to the inside of the tank so that its tip is at the liquid level. You may make it open below.

Then, about 8.58 Kg of liquid polymer having a viscosity of 300/16 (poise / ° C.) is stored in the mixing tank (1) from the upper edge to about 95 cm from the upper edge of the tank, and the hopper (7 ), About 1.5 kg of white luster (powder) was put into the experiment, and when the vacuum degree in the tank was set to about 700 mmHg, defoaming started from the liquid polymer and the valve (8) was opened at the vacuum degree of 730 mmHg. When it was opened, the powder was sucked in at a stretch and rose to the liquid inside the hood. Therefore, when the degree of vacuum is set to 200 mmHg to 300 mmHg, the powder begins to be weakly sucked into the liquid, and when it is set to 400 mmHg, it is strongly sucked, and it can be adjusted so that it is gradually sucked by adjusting the valve opening. did it. In this way, the granules were quickly sucked into the liquid polymer. In the above embodiment, the stirring blade (4) was rotated to mix the powder into the liquid polymer, but depending on the viscosity and type of the liquid, it is possible to mix without using the stirring blade.

[0009]

[Effect of device]

 Since the present invention is configured as described above and the powder is supplied from below the liquid surface by reducing the pressure in the mixing tank, the apparent specific gravity decreases due to the defoaming action of the liquid, and at the same time the hopper and the tank are reduced. Due to the pressure difference inside, the granules are very easily sucked into the liquid and can be mixed in a short time.

[Brief description of drawings]

FIG. 1 is an overall explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Mixing tank 2 Hood 5 Suction port 6 Powder and granules 7 Hopper 8 Valve 9 Supply port

Claims (1)

[Scope of utility model registration request] 1. A vacuum source is provided so as to open a supply port for communicating with a hopper for powders and granules below the liquid surface of a mixing tank for containing a liquid and to close the upper portion of the mixing tank to reduce the pressure in the tank. A mixing device for a liquid and a granular material, characterized in that a suction port is provided, and the upper part of the tank is decompressed to supply the granular material below the liquid surface to mix.