JPH0657004A - Method and apparatus for mixing polymeric water-absorbing material with water - Google Patents

Abstract

(57) [Summary] [Purpose] To enable a large amount of polymer water supply material to be uniformly dispersed and efficiently mixed with water. [Structure] A mixing device for mixing a polymer water supply material and water is arranged in a storage tank 2 installed on a stage 1, a mixer 3 arranged on the storage tank 2, and an upper part of the mixer 3. The hopper 4 and the vibrator 5 provided above the hopper 4. The lower end opening of the hopper 4 is located on the coaxial center line with the mixer 3, and a regulating valve 10 for regulating the falling amount is provided. A drop path 11 is formed in the center of the mixer 3, and a pair of facing water injection nozzle portions 12 are opened in the drop path 11. The supplied water is jetted into the falling path 11 through the water injection nozzle portion 12 to form a downwardly convex conical water film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing method and a mixing device for efficiently mixing powder of a polymeric water absorbing material with water.

[0002]

2. Description of the Related Art In the field of construction and civil engineering, polymer water-absorbing materials have recently been used in large quantities as a means for improving soil quality. This polymeric water-absorbing material is in the form of powder, supplied in a bag form, mixed with water according to the required amount at a construction site, and used as a viscous liquid having a predetermined concentration.

[0003]

However, when such a powdery polymeric water-absorbing material is mixed with water, if the polymeric water-absorbing material is put into a tank containing water all at once, it becomes a nodule, so-called "damage". There was a defect that the gel concentration of the viscous liquid was unevenly distributed so that it was extremely high in some parts, and the viscosity was kept low in other parts. Therefore, in order to prevent this secondary aggregation and make the gel concentration uniform, it was necessary to stir for a long time using a mixer or the like, and the work efficiency was extremely lowered.

The present invention has been made to solve the above problems, and an object thereof is a method for mixing a polymeric water-absorbing material and water capable of efficiently mixing a large amount of the polymeric water-absorbing material while mixing with water. And a mixing device.

[0005]

In order to achieve the above object, a method of mixing a polymeric water-absorbing material and water according to the present invention is such that while a powder of a polymeric water-absorbing material is successively dropped, while the powder is falling, The water film is continuously supplied while intersecting the powder, and the powder is dropped into the storage container together with the water to be cross-mixed.

Further, the mixing apparatus for polymer water-absorbing material and water according to the present invention stores a powder of the polymer water-absorbing material and has a lower opening for dropping the powder into the air, and the hopper of the hopper. At least a pair of water supply nozzles, which are disposed in the lower part and around the powder drop path and which intersect the drop path to supply water in the form of a film, and powder which falls below the water supply nozzle and falls. And a storage container for storing a mixture of water and water.

Here, mixing the polymeric water absorbing material with water means dispersing the polymeric water absorbing material in water,
For example, it includes a state in which the polymer water-absorbing material is dissolved in water to be in a solution state, a state in which it is not dissolved in a suspension state, and the like.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a mixing apparatus for a polymeric water-absorbing material for carrying out the mixing method according to the present invention.
The mixing device in the figure comprises a storage tank 2 installed on a stage 1, a mixer 3 arranged on the storage tank 2,
A hopper 4 arranged above the mixer 3 and a hopper 4
And a vibration exciter 5 provided on the upper shoulder of the.

The mixer 3 is fixed on the stage 1 via supporting legs 6 in the form of a stepladder. The hopper 4 has a funnel shape for temporarily storing the powder A of the polymeric water-absorbing material, and the mixer 3 is supported by a support leg 9 connected via a spring 8 to a support frame 7 arranged at the upper peripheral edge of the mixer 3. Supported above. The lower end opening of the hopper 4 is located on the coaxial center line with the mixer 3, and a regulating valve 10 for regulating the amount of drop is provided.

The volume of the hopper 4 and the volume of the storage tank 2 correspond to each other, and when at least one batch of the powder A is stored in the storage tank 2, a mixture of the powder A and water is obtained. The capacity of is adapted to the capacity of the tank 2.

At the center of the mixer 3, a horn-shaped drop path 11 whose upper and lower parts are widened is formed corresponding to the central parts of the hopper 4 and the storage tank 2. On the outer periphery of the path 11, a pair of opposed water supply nozzle portions 12 are installed so as to open slightly downward.

The water supply nozzle portion 12 forms a water film in a direction intersecting with the falling path 11, is connected to the hose 14 on the outer periphery of the mixer 3, and the water supplied through the water supply nozzle portion 12 falls through the water supply nozzle portion 12. Water films are jetted into the path 11 and collide with each other to form a convex conical water film below. The supply water is mixed with the powder A of the polymer material that drops from above and drops into the storage tank 2 together with the powder A.

In the above structure, the powder A temporarily stored in the hopper 4 causes a bridging phenomenon due to the internal friction angle of the powder A accumulated when the vibrator 5 is stopped and the narrow space in the lower opening. Therefore, it is stored without falling.

The mixing operation is performed by driving the vibration exciter 5 at the same time as the supply of water. When the vibration exciter 5 is driven, the entire hopper 4 vibrates, and this action causes the powder A to be sequentially sifted from the lower opening, and then successively and continuously loosened in a loosened state. The falling powder intersects with the water film sprayed through the water supply nozzle portion 12 in the falling path 11 and is mixed with the water film, and is sequentially dropped and stored in the storage tank 2 together with the mixed water. Therefore, in the state of being stored in the storage tank 2, it becomes a mixture of the polymeric water-absorbing material and water having a uniform concentration corresponding to each falling amount. Further, by providing a stirring blade in the storage tank 2, a more uniform mixture can be formed.

In order to adjust the concentration during the work, the opening of the adjusting valve 10 may be adjusted or the water supply amount may be adjusted. Further, even if the concentration of the produced mixture becomes inhomogeneous, no "lumps" in the form of agglomerates are generated. Therefore, if the solution is stirred in the storage tank 2 for a short time, a homogeneous polymeric water absorbing material can be easily obtained. A mixture of water and water can be obtained.

[0017]

As described in detail above, in the method and apparatus for mixing a polymeric water-absorbing material and water according to the present invention, the powder of the polymeric water-absorbing material falls in a state of being loosely disassembled. While being in contact with the water film and mixed, it becomes a uniform mixture and is dropped and stored in the storage container. Therefore, a large amount of polymeric water-absorbing material can be efficiently and uniformly dispersed in water without producing "lumps" in the form of lumps. As a result, a homogeneous mixture of the polymeric water-absorbing material and water can be easily and efficiently produced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an apparatus for mixing a polymeric water absorbing material and water according to the present invention.

[Explanation of symbols]

 2 Storage tank 3 Mixer 4 Hopper 5 Shaker 10 Adjusting valve 11 Falling path 12 Water supply nozzle A Powder of polymer water absorbing material

Claims (2)

[Claims] 1. A powder of a polymeric water-absorbing material is successively dropped, and while the powder is falling, a water film is continuously supplied while intersecting the powder, and the powder is stored in a storage container together with the water to be cross-mixed. A method for mixing a polymeric water-absorbing material and water, which comprises dropping. 2. A hopper having a lower opening for storing powder of a polymeric water-absorbing material and for dropping the powder into the air; and a hopper provided under the hopper and disposed around a dropping path of the powder. And provided with at least a pair of water supply nozzles that intersect the falling path to supply water in a film form, and a storage container that is below the water supply nozzle and that stores a mixture of falling powder and water. A device for dissolving a polymeric water-absorbing material and water, which is characterized in that