JPH0530499U - Mounting structure of anti-friction member for impeller - Google Patents

Abstract

(57) [Abstract] [Purpose] Abrasion of vane plate base material in the gap between the edges of a plurality of abrasion resistant members does not deteriorate and weaken the strength of each abrasion resistant member, and there is no protruding portion on the surface. It is an object of the present invention to provide a structure for mounting a wear-resistant member for an impeller, which can maintain the above-mentioned shape, and can have a good shape for maintenance such as mounting and replacement. A vane wheel is provided with a plurality of radial blades 5 and a main plate 3 and side plates 4 arranged on both sides of the blade 5, and a plurality of abrasion resistant members are provided on the surface of the blade 5. 9
A plurality of wear-resistant members 9
The wear-resistant material 7 was attached to the base material of the blade plate 5 facing the gap portion 40 formed between the adjacent edge portions.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an anti-friction member for an impeller, and more particularly to an improvement in the mounting structure for an anti-friction member mounted on an impeller to prevent wear of an impeller such as a blower and a pump.

[0002]

[Prior Art]

 The impeller is particularly prone to wear when it is used for treating waste gas from boilers and sintered materials for iron making, exhausting air with a lot of dust and dirt, and for blowers that handle gas containing a large amount of solid fine particles. Abrasion resistant treatment is required on the part. Recently, in place of the conventional metal liner and anti-polishing, it has been attempted to use anti-friction materials such as ceramics, which have very excellent anti-friction performance. Conventionally, as a technique of this kind, when ceramics are used, it is common to attach wear-resistant small pieces made of ceramics to the surface of the blade plate, the main plate, the side plate, etc., which are heavily worn, with an adhesive or the like. It was However, since the anti-friction material was attached directly to the surface of the blade plate, this attachment work and replacement work when it was worn were troublesome, and the adhesive attachment was performed at high temperature. Was unbearable. Therefore, a method has been developed in which a large number of abrasion resistant materials are brazed onto a holding plate as separate members, and a plurality of abrasion resistant members are detachably attached to a blade plate or the like with bolts or the like.

[0003]

[Problems to be solved by the device]

 However, as described above, when a plurality of anti-friction members are attached to the impeller, it is difficult to form an accurate straight line at the edges of the anti-friction members, so that there is an unavoidable gap between the adjacent anti-friction members. Will occur. Therefore, there is a problem that the vane base material that must be covered is exposed in this gap portion, and the purpose of preventing the abrasion of the vane cannot be achieved.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to prevent the wear of the blade plate base material facing the gap generated between the edges of the plurality of wear-resistant members from occurring. We provide a structure for mounting the anti-friction member for the impeller that does not weaken and weaken the strength of the blade, maintains a smooth surface without protruding parts on the surface, and makes it possible to maintain a good shape for maintenance such as mounting and replacement. Especially.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a structure for mounting an anti-friction member for an impeller of the present invention is a blade provided with a plurality of radial blade plates and a main plate and side plates arranged on both sides of the blade plate. A vane wheel in which a plurality of wear-resistant members are coated on the surface of a vane plate, wherein the vane plate base material facing a gap formed between adjacent edges of the plurality of wear-resistant members is abraded. The feature is that the material is attached.

[0006]

[Action]

 According to the present invention having the above-described structure, since the abrasion resistant material is attached to the portion of the blade base material facing the gap formed between the adjacent edge portions of the plurality of abrasion resistant members, the blade of this portion is attached. It is possible to prevent wear of the plate base material.

[0007]

【Example】

 Hereinafter, an embodiment of a structure for mounting an abrasion resistant member for an impeller according to the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIGS. 1 and 2, the impeller 1 includes a hub 2, a main plate 3, side plates 4 and a plurality of blade plates 5, and a plurality of abrasion resistant members 9 are provided on the surface of each blade plate 5. Installed.

As shown in FIG. 3, the wear-resistant member 9 is formed by brazing a plurality of ceramic-made wear-resistant materials 6 on the surface of a metal holding plate 8 so that the edges of the wear-resistant materials 6 are closely contacted with each other. Is made. The abrasion resistant member 9 is attached to the blade plate 5 by an appropriate method such as bolting or bonding.

As described above, a gap 40 is formed between the edges of the adjacent wear resistant members 9, 9 as shown in FIG. 3, and the mother of the blade plate 5 facing the gap 40 is formed. A groove 41 is formed in the material, and the ceramic base material side abrasion resistant material 7 is attached in the groove 41 along the groove 41. The base material side abrasion resistant material 7 is attached so that the surface thereof does not protrude beyond the base material of the blade plate 5. That is, when the abrasion resistant member 9 is attached to the base material of the blade 5, the attachment surface is made smooth so that the base material side abrasion resistant material 7 does not become an obstacle.

As described above, according to this embodiment, the blade plate 5 includes the wear resistant member 9 and the base material side wear resistant material 7 provided in the gap 40 between the edges of the adjacent wear resistant members 9. The entire surface of the base material is covered. Therefore, the wear of the entire surface of the blade base material is prevented, and in particular, the wear which is conventionally unavoidable at the portion facing the gap 40 between the edge portions of the adjacent wear resistant members 9 is prevented.

Further, even if the blade 41 is provided with the groove 41 and the base material side abrasion resistant material 7 is provided in the groove 41, the upper surface of the abrasion resistant member 9 is devised so as to be smooth. (Aerodynamics) An impeller having good performance can be obtained. Further, since the abrasion resistant member 9 has no protruding portion, local abrasion of the abrasion resistant member 9 can be prevented.

Next, another embodiment of the attachment structure of the wear resistant member for an impeller according to the present invention will be described with reference to FIG. In FIG. 4, components having the same functions and functions as those of the components in FIG.

In this embodiment, the ceramic base material side wear-resistant material 7 is directly attached to the surface of the base material of the base plate 5 facing the gap 40 between the edges of the adjacent wear-resistant members 9. It is installed. Further, a metal spacer 10 having a thickness slightly thicker than or substantially the same as that of the wear-resistant material 7 is arranged at an appropriate position between the wear-resistant materials 7. The abrasion resistant member 9, the spacer 10 and the blade plate 5 are integrally fixed by co-fastening bolts and nuts (not shown).

Also in this embodiment, the same effects as those of the first embodiment shown in FIG. 3 can be expected, and since it is not necessary to groove the base material of the vane plate 5, the strength of the base material is reduced. Is more preferable.

[0016]

[Effect of the device]

 As described above, according to the mounting structure of the wear resistant member for the impeller of the present invention, the surface of the blade plate base material exposed in the gap formed at the edge of the wear resistant material is covered with the base material side wear resistant material. It is possible to prevent wear of the blade plate base material at a portion. Also, since the strength of the abrasion resistant member is not weakened and the smoothness of the surface is not impaired, good aerodynamic performance can be maintained, and even when the base material side abrasion resistant material is adhered with an adhesive, the abrasion resistance is always maintained. Since the material is pressure-bonded to the base material, even if the adhesive is peeled off, there is no accident such as abrasion-resistant material scattering and it can be used safely.

[Brief description of drawings]

FIG. 1 is a front view of an impeller to which an embodiment of an attachment structure of an abrasion resistant member for an impeller according to the present invention is applied.

FIG. 2 is a cross-sectional view of an impeller to which an embodiment of an attachment structure of a wear-resistant member for an impeller according to the present invention is applied.

FIG. 3 is a cross-sectional view showing details of an embodiment of a mounting structure for an impeller wear-resistant member according to the present invention, which is a cross-sectional view taken along line III-III of FIG.

FIG. 4 is a cross-sectional view showing another embodiment of the mounting structure of the wear resistant member for the impeller according to the present invention, which is a cross-sectional view corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Impeller 2 Hub 3 Main plate 4 Side plate 5 Blade plate 6 Abrasion resistant material 7 Base material side abrasion resistant material 8 Holding plate 9 Abrasion resistant member 10 Spacer 40 Gap 41 Groove

Front page continuation (72) Inventor Kazumi Usato 2470 Takaoka-cho, Suzuka-shi, Mie Ebara Machinery Co., Ltd. (72) Yoshimasa Inamori 2470 Takaoka-cho, Suzuka-shi, Mie Ebara Machinery Co., Ltd. (72) Inventor, Yasuo Ishiyama Marunouchi 1-2 chome, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor, Hiroki Sugiyama 1 Kanda Mitoshiro-cho, Chiyoda-ku, Tokyo Sumitomo Cement Co., Ltd. (72) Creator Yoshiaki Sakaguchi 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Inside EBARA CORPORATION

Claims (3)

[Scope of utility model registration request] 1. An impeller having a plurality of radially arranged blades and a main plate and side plates arranged on both sides of the blades, wherein a plurality of abrasion resistant members are attached to the surface of the blades by coating. In the impeller configured as described above, an abrasion-resistant member mounting structure for an impeller, characterized in that an abrasion-resistant material is attached to a blade plate base material facing a gap formed between adjacent edge portions of the plurality of abrasion-resistant members. . 2. A groove is provided in the portion of the vane plate base material facing a gap formed between adjacent edge portions of the plurality of abrasion resistant members, and the abrasion resistant material is fitted in the groove. The mounting structure of the wear resistant member for an impeller according to claim 1. 3. A wear resistant material is attached to the portion of the vane plate base material facing the gap formed in the adjacent edge portions of the plurality of wear resistant members, and a spacer is arranged around the wear resistant material. The mounting structure of the wear resistant member for an impeller according to claim 1, wherein the wear resistant member is fixed to the vane plate base material from the upper surfaces of the wear resistant material and the spacer.