JPH07213884A - Continuous mixer - Google Patents

Abstract

PURPOSE:To obtain a continuous mixer capable of continuously and surely kneading liq. and powder. CONSTITUTION:A main shaft 1, to which a dished rotor is fixed, is rotatably erected on a bearing stand 2, a powder rotating plate 7 is fixed to the dished part 5a of the rotor 5 with a gap in between, many pins 6 are implanted in the flat part 5b, a top plate 16 is fixed slightly below the upper end of the pin, a mixer case 8 having an outlet 10 is fixed to the bearing stand 2 to surround the rotor 5, a mixer lid 9 is fixed on the mixer case 8 close to the pin 6, and an inlet pipe 13 is fixed directly above the main shaft 1 to communicate the powder rotating plate 7 with the rotor 5. A powder feed port 14 having almost the same diameter as the plate 7 is furnished around the inlet pipe 13, and a scraper member 15 is fixed close to the plate 7. As a result, the powder deposit is reduced, and the powder is continuously supplied. The powder is never deposited or accumulated on the upper surface of the powder rotating plate, water and powder are surely mixed and guided to the pin part, the powder is not stuck to the pin, and kneading is uniformly conducted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous mixer for continuously kneading liquid and powder such as water and bentonite.

[0002]

2. Description of the Related Art A conventional continuous mixer, as shown in FIG.
A spindle 1 rotatably driven by a motor is rotatably set up on a bearing stand 2, and a circular and dish-shaped rotating body 5 is provided at the upper end of the spindle 1.
Is fixed and attached, and the plate 5a of the rotating body 5 is attached to the plate 5a.
The powder rotary plate 7 is fixed with a predetermined gap from the inner surface of the rotary body 5, and a large number of pins 6 and 6a are planted above and outside the peripheral edge of the rotary body 5 to surround the rotary body 5.
While fixing the mixer lid 9 to the bearing stand 2, a liquid inflow pipe 13 is arranged directly above the main shaft 1 to communicate between the powder rotary plate 7 and the rotary body 5, and further the inflow thereof. There is a configuration in which a funnel-shaped powder supply port 14 is provided around the pipe 13. In this continuous mixer, when water is supplied from the inflow pipe 13, water is supplied to the lower side of the powder rotary plate 7, and the water is radially ejected from the gap between the rotary body 5 and the outer periphery of the powder rotary plate 7. At the same time, when the main shaft 1 is rotated by the motor and, for example, bentonite powder is continuously charged from the powder supply port 14 at a predetermined ratio, the bentonite is scattered toward the water jet surface by the rotation of the powder rotary plate 7. Then, bentonite is mixed with water, and a large number of pins 6 provided on the periphery are
Bentonite is kneaded into water by 6a and is stirred and sent downward along the inner surface of the mixer case 8, and the kneaded mixture (bentonite liquid) is discharged from the outlet 10.

[0003]

However, in the continuous mixer of this structure, powder tends to adhere and accumulate on the upper inner side of a large number of pins 6 planted in the rotating body 5 as shown by A in FIG. There is a drawback in that the substance is peeled off without being dissolved in water to form lumps (lumps of powder), which cannot be uniformly kneaded. In order to prevent sticking to the pins,
As shown in FIG. 4, a mixer lid 9 provided with a fixing pin 6b between the pins 6 of the rotating body 5 has been devised. However, in this structure, the pins 6 and 6b are often broken due to foreign matter being caught. There is. Further, as shown in parts B and C in FIG. 3, the powder is easily attached and deposited below the powder supply port 14 or on the powder rotary plate 7, which deteriorates the flow of the powder and frequently decomposes it. In addition to the need to remove the deposits, the mixing ratio of water and powder is changed, which causes a problem that a bentonite liquid having a desired mixing ratio cannot be obtained. The present invention is intended to solve these problems and to invent a continuous mixer capable of continuously and uniformly kneading a liquid and a powder.

[0004]

To achieve this object, a main shaft driven by a rotary drive source is rotatably provided on a bearing stand, and a circular plate-shaped rotary member is fixed to the upper end of the main shaft. , The powder rotary plate is fixed to the dish part of the rotating body with a predetermined gap, and a large number of pins are planted on the outer flat part, and the flat surface is located slightly below the upper end of the pin. A circular ring-shaped top plate is fixed in parallel with the rotating part, a mixer case surrounding the rotating body is fixed to the bearing stand, and the inner peripheral wall of the mixer case is formed in a conical shape slightly larger than the rotating body and narrowed downward. Then, an outlet is provided on the lower side of the mixer case, and a mixer lid having an opening at the center is horizontally attached to the mixer case in the vicinity of the pin of the rotating body.
An inflow pipe is arranged above the main shaft to communicate between the powder rotary plate and the rotating body, and a cylindrical powder supply port having substantially the same diameter as the powder rotary plate is provided around the inflow pipe. Continuous, which is arranged and connected to the opening of the mixer lid and fixed to the inflow pipe through the upper lid, and a scraping member is fixed to the lower end of the inner wall of the powder supply port in the vicinity of the powder rotary plate. It is a mixer.

[0005]

[Function] Since the powder supply port is formed in a cylindrical shape having substantially the same diameter as the powder rotary plate, the powder adheres to the lower part of the powder supply port very little, and the powder can be stably supplied. Further, since the scraping member is provided and the powder on the upper surface of the powder rotating plate is constantly scraped off, the powder does not adhere to and deposit on the upper surface of the powder rotating plate. Furthermore, a circular top plate is provided slightly below the upper end of the pin and extends to a position close to the powder supply port, so that water and powder are mixed and reliably guided to the pin portion, and the powder adheres to the pin. It is possible to knead uniformly without mixing.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a main shaft arranged upright, which is rotatably assembled to a bearing stand 2 through upper and lower bearings 3 and 3.
The upper bearing 3 has a seal structure. A pulley 4 is rotatably driven by a motor (not shown) at the lower end of the main shaft 1.
Is fixed and the belt is transmitted from the motor. A circular, dish-shaped rotating body 5 is fixed to the upper end of the main shaft 1, and a large number of pins 6 are planted on a triple circular orbit at a predetermined interval on the outer flat surface portion 5b of the rotating body 5. (See FIG. 2), and the flat portion 5 is located at a position slightly below the tip of the pin 6.
A circular ring-shaped top plate 16 having an inner diameter is fixed in parallel with b and adjacent to a powder supply port 14 described later. Further, the powder rotary plate 7 is horizontally arranged in the dish portion 5a of the rotary body 5 through the support column 5c, and a predetermined gap is provided between the dish portion 5a and the outer periphery of the powder rotary plate 7. The powder rotary plate 7 rotates integrally with the rotary body 5 while forming a liquid jet nozzle.

A mixer case 8 and a mixer lid 9 that surround the rotating body 5 are attached to the upper surface of the bearing base 2.
The inner peripheral wall of the mixer case 8 is slightly larger than the rotating body 5 and is formed in a conical shape with a narrowed lower part, and an outlet 10 is provided on the lower side of the mixer case 8.
The mixer lid 9 having an opening 9a in the center is horizontally attached to the mixer case 8 near the upper end of the pin 6 of the rotating body 5. Further, a cylindrical partition wall 11 is assembled between the bottom surface of the mixer case 8 and the lower surface of the rotating body 5 to reduce the retention area around the bearing 3. Further, the scraping blades 12 are radially fixed to the lower side portion of the rotating body 5 in two directions (or may be four directions) so as to rotate integrally with the rotating body 5.

On the other hand, an inflow pipe 13 for introducing a liquid is arranged directly above the main shaft 1, and the lower end of the inflow pipe 13 is provided in the rotating body 5.
And the powder rotary plate 7 are communicated with each other. Around the inflow pipe 13, a cylindrical powder supply port 14 having substantially the same diameter as the powder rotary plate 7 is provided, which is connected to the opening 9a of the mixer lid 9 and via an upper lid 17. It is fixed to the inflow pipe 13. Further, an inverted T-shaped scraping member 15 is provided at the lower end of the inner wall of the powder supply port 14.
Are fixed so as to be close to the upper surface of the powder rotating plate 7 (see FIG. 2).

Next, the kneading operation and action of water and bentonite (powder) by the continuous mixer of this construction will be described. When the main shaft 1 is rotationally driven by a motor (not shown) (about 900 revolutions / minute in the embodiment), the rotary body 5 rotates at high speed in the mixer case 8 together with the powder rotary plate 7. When water is supplied from the inflow pipe 13 at a predetermined water pressure, the water flows as a radial jet flow from the gap between the dish portion 5 a of the rotating body 5 and the powder rotary plate 7 to the entire area of the pin 6 to be jetted. To be done. At the same time, when the bentonite is continuously supplied in a fixed amount from the powder supply port 14, the powder rides on the rotating powder rotating plate 7 and is diffused outward by the centrifugal force, and is rotated while being mixed with the jet water and dissolved. It is guided by the body 5 and the top plate 16 and scatters in the direction of the pin 6. The water and the powder blown outward are sufficiently mixed with water and bentonite by a large number of pins 6 rotating at high speed, and are kneaded in an instant. The kneaded bentonite liquid passes through the pin 6 and the mixer case 8
It is sent downward along the inner wall of the nozzle and discharged from the outlet 10. At this time, the scraping blades 12 on the lower side of the rotating body 5 discharge the kneaded material around the bottom of the mixer case 8 and the partition wall 11 from the outlet 10 without accumulating.

[0010]

As is apparent from the above embodiments, the continuous mixer of the present invention has a powder supply port of a cylindrical shape having a diameter close to that of the powder rotating plate. The flow of water is good and stable continuous supply is possible. Further, since the scraping member is provided, the powder does not adhere to and deposit on the upper surface of the powder rotary plate. Furthermore, since the circular top plate is located slightly below the upper end of the pin and extends to the vicinity of the powder supply port, the water and powder are reliably mixed and guided to the pin section. It is possible to obtain a unique effect such that the particles do not adhere and can be kneaded uniformly.

[Brief description of drawings]

FIG. 1 is a front sectional view of a continuous mixer of the present invention.

FIG. 2 is an explanatory diagram showing a part of a section taken along line XX of FIG.

FIG. 3 is a front sectional view of a conventional continuous mixer.

FIG. 4 is an explanatory diagram of a pin portion in a conventional continuous mixer.

[Explanation of symbols]

 1 Spindle 2 Bearing Stand 3 Bearing 4 Pulley 5 Rotating Body 5a Plate 5b Flat 5c Support 6 Pin 7 Powder Rotating Plate 8 Mixer Case 9 Mixer Lid 9a Opening 10 Outlet 11 Partition Wall 12 Scraping Blade 13 Inflow Pipe 14 Powder Body supply port 15 Scraping member 16 Top plate 17 Upper lid

Claims (1)

[Claims] 1. A main shaft driven by a rotary drive source is rotatably provided on a bearing stand, a circular plate-shaped rotating body is fixed to an upper end of the main shaft, and a powder rotary plate is mounted on the plate portion of the rotating body. And a large number of pins are planted on the flat surface on the outer peripheral side, and a circular ring-shaped top plate parallel to the flat surface is placed at a position slightly lower than the upper end of the pin. Stuck,
A mixer case surrounding the rotating body is fixed to the bearing base,
The inner peripheral wall of the mixer case is formed in a conical shape that is slightly larger than the rotating body and has a narrowed lower part, and an outlet is provided on the lower side of the mixer case, and a mixer lid having an opening at the center is provided on the rotating body. While being attached to the upper end of the mixer case in the vicinity of the pin, the inflow pipe is arranged above the main shaft to communicate between the rotating body and the powder rotating plate, and the powder rotating around the inflow pipe. A cylindrical powder supply port having almost the same diameter as the plate is arranged, connected to the opening of the mixer lid and fixed to the inflow pipe through the upper lid, and further scraped to the lower end of the inner wall of the powder supply port. A continuous mixer characterized in that a member is fixed close to the powder rotary plate.