JP2591392Y2 - Crushing and classification device for raw materials in sliding screen type crusher - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an improvement of a sliding screen type crusher in which raw materials supplied into a cylindrical screen are crushed by a sliding rod moving along the inner surface of the screen and are simultaneously classified by the screen. About.

[0002]

2. Description of the Related Art A conventional crusher of this type is provided with a single sliding rod which moves along the inner surface of a cylindrical screen and crushes the raw material supplied by the sliding rod. At the same time, the crushed raw material is pressed into the screen and classified. (See Fig. 3)

[0003]

In the conventional crusher as described above, among the supplied raw materials, those that are caught between the sliding rod and the inner surface of the screen are crushed and classified.
The raw material in a lump larger than that is merely pushed by the sliding rod and moves in the screen, and becomes fine powder due to friction with the screen, so that granules having a desired size cannot be obtained. Further, there is a disadvantage that the crushing time requires a long time.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and the gist of the invention is to supply a raw material into a cylindrical screen, and to supply the raw material to the inner surface of the screen. In the crushing and shaping machine that is configured to crush and classify with a sliding bar that moves along, a plurality of sliding bars are provided in a screen, at least one of the sliding bars is brought close to the inner surface of the screen, and another The sliding bar is provided apart from the inner surface of the screen.

[0005]

The device according to the present invention is constructed as described above, and when the raw material is supplied into the screen and the sliding rod is operated, the sliding rod rotating close to the screen surface and the screen are rotated. Between the inner surface and the inner surface, the small-sized raw material caught in the gap is crushed and classified by the screen. on the other hand,
Between the sliding bar and the screen provided apart from the screen, large raw material is caught and crushed, those that pass through the screen are classified, and those that do not pass are by the close sliding bar. It is crushed and classified. That is, the crushing is performed in two steps in the screen, and the large raw material can be prevented from oscillating in the screen to generate fine powder, and the crushed raw material is supplied to the sliding rod in sliding contact. Therefore, the crushing time can be shortened. Hereinafter, the present invention will be specifically described with reference to the drawings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a cylindrical screen, and 2 denotes a plurality of sliding rods provided in the screen 1 and swinging right and left. The book is designed to rotate close to the inner surface of the screen 1, and the other books are rotated at a fixed distance from the inner surface of the screen 1. Reference numeral 3 is a rotational axis for reciprocating the sliding rod 2, 4, sliding bar 2
FIG. In FIG. 2, a coarse screen 1a is provided below the separated slide bar 2a.
FIG. 3 shows a conventional apparatus.

The device according to the present invention is configured as described above, and the raw material supplied to the screen 1 is provided with a sliding rod 2
With the rotation of, the slide bar 2 that is in sliding contact with the inner surface of the screen 1 is caught and crushed between the slide bar 2 and the inner surface of the screen 1 and simultaneously pressed into the eyes of the screen 1. And classified. On the other hand, the raw material around the sliding rod 2a separated from the inner surface of the screen has a large particle size.
The raw material which is crushed by being sandwiched between the separated sliding bar 2a and the screen 1 and crushed into small particles can be crushed and classified by the adjacent sliding bar 2.

That is, in this type of conventional crusher, FIG.
As shown in (1), the raw material caught between the sliding bar and the screen 1 is crushed and classified, but the large raw material that is not caught is pushed by the sliding bar 2 and moves the screen 1 only by moving the screen 1. During the movement, the powder became fine powder due to friction with the screen 1, and a raw material having a desired particle size could not be obtained. Needless to say, it took a long time for crushing. This invention has solved these problems. .

In the apparatus shown in FIG. 2, a coarse screen is provided between the inner surface of the screen 1 and a slide bar 2a provided at a distance. In this case, the raw material is supplied by a coarse screen. 1a. In this case, even if the diameter of the screen 1a is smaller than the diameter of the screen 1 below, the screen 1a is coarse and the processing ability is balanced with that of the screen 1 below. In this case, since the particles of the raw material falling from the coarse screen 1a have a particle size of a certain size or less, the generation of fine powder is small, and the crushing can be performed quickly.

[0010]

As described above, the apparatus according to the present invention provides a crushing and shaping machine using a sliding screen by providing a plurality of sliding rods for crushing the raw material moving along the inner surface of the screen. It is broken into two stages, with suppressing the generation of fine powder, be one obtained by allowing rapid fracture, in which exhibits the table effect with the case of using the sludge cake was sized to fertilizer.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a screen portion of the device according to the present invention.

FIG. 2 is a cross-sectional view of another embodiment.

FIG. 3 is a cross-sectional view of a screen portion of a conventional crushing classifier.

[Explanation of symbols]

 1 screen 2 sliding bar 2a sliding bar

Claims (1)

(57) [Scope of request for utility model registration] 1. A crushing and shaping machine which supplies a raw material into a cylindrical screen 1 and crushes and classifies the raw material with a sliding rod 2 moving along the inner surface of the screen 1.
A plurality of sliding rods 2 and 2a are provided in a screen, at least one of the sliding rods 2 is provided close to the inner surface of the screen, and the other sliding rod 2a is provided to be separated from the inner surface of the screen 1. A crushing and classifying device for raw materials in a sliding screen crusher characterized by the following features.