JPH0641636Y2 - Media stirring type crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a media agitating crusher in which an auxiliary agitator is arranged substantially at right angles to a main agitator.

[Conventional technology]

Conventionally, in the center of the crushing tank containing the media inside,
A media agitating crusher is known in which agitator shafts having a plurality of agitator arms are concentrically arranged and the agitator shafts are rotatably supported.

[Problems to be solved by the device]

In the conventional media agitating crusher, the media is biased in one direction or the other direction depending on various conditions such as the viscosity and flow rate of the processed material. That is,
The behavior of the media tends to change, making it difficult to obtain a homogeneous product. For this reason, it was necessary to control the viscosity, the processing flow rate, etc. to homogenize the product, but the control equipment was expensive. Further, in this conventional one, coarse particles are apt to be short-passed, and in addition, the pulverizing force is inferior. Furthermore, at the time of start-up, it is locked due to uneven distribution of media,
Sometimes it was not possible to start it up smoothly.

The problem to be solved by this invention is not only to improve the particle size distribution of the media, but also to prevent coarse particle pass, improve the crushing power, and enable a smooth start. The point is whether to take it.

[Means for Solving the Problems]

The media stirring type crusher according to the present invention has the following features to solve such a problem. That is, in the center of a crushing tank containing a media inside, an agitator shaft with a plurality of main agitator arms is arranged to rotatably support the agitator shaft. This is a media stirring type crusher in which agitator shafts having a plurality of auxiliary agitator arms are arranged in a position substantially orthogonal to the agitator shafts, and the agitator shafts are also rotatably supported. The location where the auxiliary agitator is provided may be any location in the intermediate portion except for the vicinity of both ends of the main agitator. You may provide in two or more places. And, one auxiliary agitator may be provided at one place, or two or more auxiliary agitators may be provided.
It is convenient if the auxiliary agitator is capable of changing the rotation speed.

[Action]

In the media stirring type crusher according to the present invention, when the main agitator arm and the auxiliary agitator arm are rotated and stirred together with the media while supplying the crushed material in the form of slurry into the crush tank, the crushed material is distributed between the media. It is crushed by impact and grinding. At this time, the auxiliary auxiliary agitator in the middle acts to block the movement of the media beyond the auxiliary agitator to some extent. Therefore, the dense pressure portion of the media tends to have a plurality of stages. By operating the auxiliary agitator before starting the main agitator, uneven distribution of the media can be eliminated and the startup can be made smooth. Further, when the rotation speed of the auxiliary agitator can be changed, the movement of the media can be controlled and the crushing performance can be controlled while adjusting the rotation speed of the auxiliary agitator.

〔Example〕

FIG. 1 is a vertical sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. A cylindrical elongated grinding tank 1 is arranged vertically, and a cooling jacket 2 is formed on the outer circumference of the grinding tank 1. Cooling water is caused to flow through the jacket 2 to control the temperature of the ground product. At the bottom of the crushing jacket 2, a feed port 14 for a processed material and a ball removing valve 17 are provided. A media input port 16 is provided at the top.

Agitator shaft 3 from above in the center of the grinding tank 1
And the agitator shaft 3 is rotatably supported. The agitator arm 4 is attached to the agitator shaft 3 in multiple stages in the vertical direction, but is not attached to the central portion. In the central part, the grinding tank 1
Insert the agitator shafts 6-1 and 6-2 from the side of the so that the agitator shafts 6-1 and 6-2 can be rotated by the motors 5-1 and 5-2. Is attached to the grinding tank 1. A plurality of auxiliary agitator arms 7-1 and 7-2 are attached to the agitator shafts 6-1 and 6-2, respectively.

A ring-shaped stator 9 is arranged at the upper end of the crushing tank 1, and a disc-shaped rotor 10 is attached to the agitator shaft 3 at a position inside the stator 9. Stator 9 and rotor
A slight gap e is formed between the gap 10 and the gap 10 so that the gap e serves as a ring-shaped gear separator.

A scraping blade 12 is attached to the agitator shaft 3 at a position slightly above the rotor 10. Then, cover the crushing tank 1 with a discharge tank 11 and bolt the discharge tank 11
It is mounted on the grinding tank 1 together with the stator 9 by 15. A nozzle 13 for discharging the product is attached to the discharge tank 11.

The one shown above is operated as follows. The agitator shaft 3 and the agitator shafts 6-1 and 6-2 are rotated while the crushed material slurried by a pump (not shown) is supplied from the supply port 14 to the lower portion of the crushing tank 1, and are stirred together with the media 8. The crushed material is crushed by the impact and the grinding action between the media 8 and separated from the media 8 at the gap e of the gear separator provided at the upper part, and the discharge tank 11
Enter inside. Here, it is discharged to the nozzle 13 by the scraping blade 12 and is collected to the outside.

In the above, the auxiliary agitator in the center tends to prevent the medium 8 from moving between the lower portion and the upper portion to some extent, that is, the dense pressure portion of the medium 8 is divided into upper and lower stages. I will end up.

[Effect of device]

In the media agitating crusher according to the present invention, since the dense pressure portion of the media has a plurality of stages, the crushing power is increased and coarse sieving of coarse particles is less likely to occur, and the crushing performance is improved.
Also, the startup can be made smooth.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. 1 ... Grinding tank 3 ... Agitator shaft 4 ... Agitator arm 6-1, 6-2 ... Agitator shaft 7-1, 7-2 ... Agitator arm

Claims (1)

[Scope of utility model registration request] 1. A grinding tank having a media accommodating therein, wherein an agitator shaft equipped with a plurality of main agitator arms is arranged in the center of the grinding tank so that the agitator shaft is rotatably supported. A media agitating crusher in which agitator shafts having a plurality of auxiliary agitator arms are arranged in an arbitrary position of the agitator shaft in a state substantially orthogonal to the agitator shafts, and the agitator shafts are also rotatably supported.