JPH0551447U - High-speed rotary pulverizer - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to prevent wear of a metal piece member standing on a rotary plate and a fixed plate of a high-speed rotary fine pulverizer by a simple means. [Structure] In a high-speed rotary fine pulverizer in which a rotary plate 2 and a fixed plate 3 are provided in a housing 1, and metal piece members 8 and 9 on opposite surfaces of both plates are erected, a piece member 8 on the rotary plate side is provided. A ceramic lining material 10 having a U-shaped cross section is fixed by an adhesive so as to cover three surfaces, which are the front surface in the rotating direction and both side surfaces in the radial direction, which are easily worn. The flat plate-shaped ceramic lining material 11 is fixed to the two surfaces on both sides in the radial direction that are easy to perform with an adhesive. Since the wear surface of the metal piece member is protected by the ceramic lining material having excellent wear resistance, generation of metal powder due to wear of the piece member is eliminated. [Effect] Since only the wear-prone surface of the bridge member is protected by the ceramic lining material, it is possible to significantly reduce the labor and cost of the lining work.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a high-speed rotary fine crusher used for crushing inorganic fibers such as aluminum fibers and alumina silicate fibers used as reinforcing fibers for composite materials such as FRM, ERC, FRD, etc. The present invention relates to the improvement of the structure of the bridge member that serves as a hammer.

[0002]

[Prior Art]

 Conventionally, as this type of high-speed rotary pulverizer, a metal rotating plate and a fixed plate were placed in the housing, and a large number of rectangular cross-section pieces were erected on the opposing surfaces of both plates. A crusher configured to crush the inorganic fiber material supplied into the housing by the rotating bridge member and the stationary bridge member and discharge the crushed product to the outside through a screen fitted in the casing is often used. There is. Further, a metal member such as SS, SUS, cemented carbide or the like is used as the piece member.

[0003]

[Problems to be solved by the device]

 However, in the above high-speed rotary pulverizer, wear metal powder from a metal member such as a bridge member mixes with the inorganic fibers, which are pulverized products, and acts as a harmful metal, leading to deterioration in the performance of the composite material. The disadvantage is that the fibers themselves are colored, leading to a decrease in commercial value. The above-mentioned drawbacks can be prevented by, for example, lining metal parts such as the rotating plate including the bridge member, the fixed plate, and the inner surface of the housing with an organic substance such as rubber or synthetic resin to prevent the wear metal from being mixed into the powder. However, if crushing is carried out for a long time, the lining layer is easily worn on the front surface of the rotating plate member in the rotating direction and on both sides in the radial direction, and on the radial side of the stationary member. There is a problem in terms of durability.

[0004]

[The purpose of the device]

 The present invention has been made to solve the above problems, and provides a high-speed rotary fine pulverizer which does not mix wear metal powder into an inorganic fiber material, has excellent wear resistance, and can be used for a long period of time. The main purpose is to do.

[0005]

[Means for Solving the Problems]

 The present invention is a high-speed rotary fine pulverizer in which a rotating plate and a fixed plate are arranged in a housing, and a large number of metal piece members having a rectangular cross section are erected on opposing faces of both plates. The lining material made of ceramics is fixed to the piece member of 3 which covers the front surface in the rotating direction and both side surfaces in the radial direction, and the piece member on the stationary plate side has two surfaces on both sides in the radial direction. The gist is the structure in which a ceramic lining material covering the above is fixed. The front surface of the rotating plate side piece member collides with the crushed product due to the rotation of the rotating plate, and the crushed product collides with the rotating plate and the fixed plate piece member both sides in the radial direction due to centrifugal force during high-speed rotation. It is considered that these surfaces are particularly likely to be worn because they are easy to wear. Further, the ceramic lining material can be fixed by a method such as screwing, but it is easy to bond with an adhesive.

[0006]

[Action]

 According to the above configuration, since the wear surface of the piece member is lined with ceramics, generation of metal powder due to wear of the piece member is eliminated.

[0007]

【Example】

 1 to 3 show an embodiment of the present invention. In the figure, 1 is a housing constituting a high-speed rotary pulverizer, 2 is a rotary disk, 3 is a fixed disk, and these are made of metal. The fixed platen 3 is supported by a hinge 4 to be rotatable and openable on the housing side. 5 is a handle, 6 is a door, and 7 is a door receiver.

A large number of metal piece members 8 and 9 are erected concentrically on the turntable 2 and the fixed board 3, respectively. A ceramic lining material 10 having a U-shaped cross section is fitted so as to cover the three surfaces on both sides in the radial direction and is fixed by an adhesive. A plate-shaped ceramic lining material 11 is attached to two pieces of both side surfaces in the radial direction which are easily worn and fixed to the piece member 9 of the fixed plate 3 and fixed by an adhesive. Alumina, silicon nitride, zirconia, etc. can be used as the ceramic lining material of the piece member, but considering the occurrence of cracks and damage due to the impact of the crusher, it is preferable to use zirconia with toughness. ..

Further, a lining layer (not shown) made of an organic material such as rubber or synthetic resin is formed on the rotary disk 2 and the fixed disk 3 excluding the bridge members and on the inner surface of the housing 1. ing. Further, it is preferable that the screen 12 fitted in the housing is also lined. This lining layer can be formed by a simple method such as brush painting, a roller method, a tape molding method, or a spray method.

With the above-described structure, the wear-prone surfaces of the metal piece members 8 and 9 are completely protected by the ceramic lining materials 10 and 11 having excellent wear resistance, so that they do not wear. Therefore, generation of wear metal powder is also eliminated. In addition, if a lining layer made of an organic material is formed on the metal parts of the rotating disk and stationary disk, excluding the bridge members, and the inner surface of the housing, not only can these surfaces be prevented from wear, but also the crushing process can be performed. It also helps reduce the noise that sometimes occurs.

[0011]

[Effect of the device]

 As described above, according to the present invention, the rotary plate member and the fixed plate member of the high-speed rotary pulverizer are protected by the wear-resistant ceramic lining material, so that the wear metal powder is not mixed with the inorganic fiber. It can be used for a long period of time. In particular, according to the present invention, since the ceramic lining material is fixed only to the wear-prone surface of the piece member, the lining work can be largely labor-saving and the cost can be reduced at the same time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a high speed rotary pulverizer showing an embodiment of the present invention.

FIG. 2 is a perspective view of a piece member of a rotating disk.

FIG. 3 is a perspective view of a piece member of a fixed board.

[Explanation of symbols]

 1 Housing 2 Rotating Plate 3 Fixed Plate 4 Hinge 5 Handle 6 Door 7 Door Receiver 8 Rotating Plate Side Piece Member 9 Fixed Plate Side Piece Member 10, 11 Lining Material 12 Screen

Claims (3)

[Scope of utility model registration request] 1. A high-speed rotary fine pulverizer comprising a rotary disk and a fixed disk arranged in a housing, and a plurality of metal piece members having a rectangular cross section which are erected on opposite surfaces of both disks. The lining material made of ceramics is fixed to the piece member of 3 which covers the front surface in the rotation direction and both side surfaces in the radial direction, and the piece member on the stationary plate side has two surfaces on both sides in the rotation direction. A high-speed rotary pulverizer characterized in that a ceramic lining material covering the above is fixed. 2. The high-speed rotary fine pulverizer according to claim 1, wherein a lining layer made of an organic substance such as rubber or synthetic resin is formed on a portion of the rotary disc and the fixed disc excluding the bridge member and on the inner surface of the housing. .. 3. The high-speed rotary fine pulverizer according to claim 1, wherein zirconia (ZrO ₂ ) is used as the ceramic lining material that covers the piece members of the rotary plate and the fixed plate.