JP2558168Y2 - Inorganic fiber crusher - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to FRM, FRC, FR
The present invention relates to an inorganic fiber crusher used for crushing inorganic fibers such as alumina fibers and aluminosilicate fibers used as reinforcing fibers of a composite material such as P.

[0002]

2. Description of the Related Art Conventionally, a crusher having a structure as shown in FIG. 4 has been used. In the figure, 1 is a housing constituting a crusher, 2 is a screen, 3 is a rotating body, 4 is a large number of hammers projecting radially from the peripheral surface of the rotating body, and is put into a hopper 5. The material to be crushed is sent into the crushing chamber by the screw conveyor 6, crushed by the high speed rotation of the rotating body 3 with hammer, and discharged downward through the screen 2.

[0003]

The crusher of the above construction is usually provided with a metal screen such as steel or stainless steel. However, the crusher is made of inorganic fiber such as alumina fiber or aluminosilicate fiber. When used for grinding,
During the pulverization process, there is a problem that the metal powder generated by the abrasion of the metal screen is mixed into the inorganic fibers to be pulverized, thereby lowering the commercial value due to coloring and adversely affecting the performance of the secondary product. In order to prevent such problems, it is desirable to use a screen made of a material with excellent wear resistance and impact resistance such as engineering plastics such as polyetheretherketone and polycarbonate. Is difficult to process.

[0004]

The purpose of the present invention is to solve the above-mentioned problem, and there is no mixing of wear metal powder into the inorganic fiber material to be pulverized, and the wear resistance and impact resistance are improved. It is an object of the present invention to provide an inorganic fiber pulverizer having an excellent screen.

[0005]

The inorganic fiber crusher according to the present invention crushes an object to be crushed sent to a crushing chamber in a casing by a rotating body with a hammer rotating in the crushing chamber, and crushes the crushed object outside the rotating body. in mills for discharging to the outside through disposed a screen, the screen, an annular support frame facing taking a predetermined distance, leaving the both supporting frame
A polyether having a round cross-section which is supported so as to be attachable and is arranged in a lattice with a predetermined gap in the ring direction, wherein the rod is excellent in wear resistance and impact resistance.
Made of ether ketone resin or polycarbonate resin
The main point is that it is made of plastics .

[0006]

According to the above construction, the screen is formed in a lattice shape, and the bar members forming the lattice are made of a polyetheretherketone resin or a polyetheretherketone resin having excellent wear resistance and impact resistance.
Is made of plastics made of polycarbonate resin, so that metal wear powder does not mix into the crushed object.

[0007]

1 to 3 show an embodiment of the present invention. 4, the same members as those in FIG. 4 are denoted by the same reference numerals.

That is, 1 is a housing constituting a crusher, 3 is a rotating body, 4 is a hammer, 5 is a hopper, and 6 is a screw conveyor. The screen A includes annular support frames 7, 7 facing each other at a predetermined interval, and both support frames 7, 7.
7 and a number of bar members 8 arranged in a lattice with a predetermined gap in the ring direction.

The rod member 8 has abrasion resistance and impact resistance.
Plastics are used consisting of superior polyether ether ketone resin or a poly <br/> carbonate resin sexual. The support frame 7 is preferably made of the same material as the rod member, but is not particularly limited.

As means for assembling the annular support frames 7, 7 and the rod members 8, in the example shown in the figure, a rod member 8 placed at a required central angle (for example, 120 degrees) is fitted to the support frames 7, 7. Then, it is fixed with screws 9 from the side, another rod member 8 is passed through a hole formed in one support frame, and fitted into a concave portion of the other support frame to be assembled. Because of this, the stick
The member 8 can be detached. In the structure of this screen, an opening for receiving the material to be pulverized is formed without providing a bar member on the surface facing the screw conveyor.

[0011]

As described above, the inorganic fiber crusher of the present invention replaces the conventional metal porous screen with a polyether ether excellent in abrasion resistance and impact resistance.
-Made of terketone resin or polycarbonate resin
Since a grid-type screen composed of a round bar member made of plastics and a support frame for supporting these members is used, metal abrasion powder does not enter the object to be ground. Further, since the lattice is formed by using a rod member having a round cross section, clogging is unlikely to occur, and material processing is relatively easy. Furthermore, the rod member is detachably supported on both support frames.
Therefore, even if the bar member is damaged, only the portion needs to be replaced, and there is an advantage that it is not necessary to replace the entire screen.

[Brief description of the drawings]

FIG. 1 is a sectional view of an inorganic fiber crusher showing an embodiment of the present invention.

FIG. 2 is a side view of a screen.

FIG. 3 is a plan view of a main part of the screen.

FIG. 4 is a sectional view of a conventional high-speed pulverizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher casing 2 Conventional screen 3 Rotating body 4 Hammer 5 Hopper 6 Screw conveyor A Screen used in the present invention 7 Support frame 8 Bar member 9 Bar member fixing screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A pulverized by a hammer with the rotating body to rotate the grinding object sent to the grinding chamber in the casing in the grinding chamber, the grinding machine to discharge to the outside through a screen which is disposed outside of the rotary body , The screen is attached to an annular support frame facing at a predetermined interval, and both support frames.
A polyether member which is detachably supported and is arranged in a lattice shape with a predetermined gap in the ring direction and has a round cross section, and the rod member is excellent in wear resistance and impact resistance.
From ruthe ketone resin or polycarbonate resin
An inorganic fiber pulverizer characterized by being formed of plastics .