JPH0583757B2 - - Google Patents
Info
- Publication number
- JPH0583757B2 JPH0583757B2 JP16092088A JP16092088A JPH0583757B2 JP H0583757 B2 JPH0583757 B2 JP H0583757B2 JP 16092088 A JP16092088 A JP 16092088A JP 16092088 A JP16092088 A JP 16092088A JP H0583757 B2 JPH0583757 B2 JP H0583757B2
- Authority
- JP
- Japan
- Prior art keywords
- liner
- ceramic
- ceramics
- wear
- wall portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 43
- 239000000428 dust Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は羽根車に放射状に設けられた羽根板
に、セラミツクスにより表面が被覆保護されたラ
イナが取付けられてなる耐摩耗送風機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wear-resistant blower in which a liner whose surface is coated and protected with ceramics is attached to blade plates provided radially on an impeller.
第７図に示すような送風機用の羽根車１、わけ
てもボイラの廃ガス用、土砂、塵埃の多い空気の
排気用など、固定微粒子のダクトを多く含むガス
を扱う送風機の羽根車１では、特に摩耗の起き易
い各羽根板２の表面に耐摩耗処理が必要であり、
例えば、各羽根板２の表面に直接セラミツクスを
接着したり、又はセラミツクスで被覆保護した金
属性のライナを各羽根板２に取付けることで対処
していた。
The impeller 1 for a blower as shown in Fig. 7 is particularly suitable for a blower that handles gas containing a large amount of fixed fine particles, such as for boiler waste gas, exhausting air containing a lot of earth, sand, and dust. It is necessary to apply anti-wear treatment to the surface of each vane plate 2, which is prone to wear.
For example, this problem has been solved by directly adhering ceramics to the surface of each slat 2, or by attaching a metal liner coated and protected with ceramics to each slat 2.
従来、ライナを取付ける場合には、例えば第７
図および第８図に示すように、羽根車１の中心部
のハブ３から放射状に配設された複数の羽根板２
と、この羽根板２の両側壁をなす主板５および側
板６とで構成された羽根車１に対し、第９図に示
すように、底壁部８と左右の側壁部９，１０で構
成されるチヤンネル状のライナ７を羽根板２の表
面側から装着し、ライナ７の底壁部８から突設し
たボルト１１を羽根板２の裏面側からナツト１２
によつて締結するものである。 Conventionally, when installing a liner, for example, the seventh
As shown in the figures and FIG. 8, a plurality of vane plates 2 are arranged radially from the hub 3 at the center of the impeller 1.
As shown in FIG. 9, the impeller 1 is composed of a main plate 5 and a side plate 6 forming both side walls of the vane plate 2, and is composed of a bottom wall portion 8 and left and right side wall portions 9, 10. A channel-shaped liner 7 is installed from the front side of the vane plate 2, and a bolt 11 protruding from the bottom wall part 8 of the liner 7 is inserted into the nut 12 from the back side of the vane plate 2.
This is hereby concluded.
ライナ７を構成する底壁部８および左右の側壁
部９，１０の各内側面にはそれぞれセラミツクス
１３が接合されており、ライナ７の表面摩耗を防
止しているが、これらセラミツクス１３の接合
は、ライナ７の底壁部８と側壁部９，１０とを溶
接１４，１５によつて組付ける前に、予め各部材
８，９，１０毎に同一形状のセラミツクス片を多
数接合したものである。そして、これらセラミツ
クス片が敷設された底壁部８および側壁部９，１
０を組付けることで、結果的にライナ７の内側面
をセラミツクス１３によつて被覆する手段をとつ
ている。 Ceramics 13 are bonded to the inner surfaces of the bottom wall 8 and the left and right side walls 9 and 10 that make up the liner 7, respectively, to prevent surface wear of the liner 7. , before assembling the bottom wall 8 and side walls 9, 10 of the liner 7 by welding 14, 15, a large number of ceramic pieces of the same shape are joined in advance to each member 8, 9, 10. . A bottom wall portion 8 and side wall portions 9 and 1 are covered with these ceramic pieces.
0, the inner surface of the liner 7 is eventually covered with the ceramic 13.
〔発明が解決しようとする課題〕
しかしながら、上述のような手段でライナ７の
表面を被覆保護した場合、底壁部８に接合したセ
ラミツクス１３ａの両端部と側壁部９，１０のセ
ラミツクス１３ｂ，１３ｃの下端部との突き合わ
せ部位でガスの流れる方向に沿つて連続した隙間
１６，１７が形成され易く、またセラミツクス１
３ａ，１３ｂ，１３ｃの表面はライナ７の全体に
亘つて平滑面を形成しているためにガスの流速も
大きく、該隙間１６，１７に侵入したダストの大
きな流速によつてライナ７自体が摩耗を受けてし
まうといつた問題があつた。[Problems to be Solved by the Invention] However, when the surface of the liner 7 is coated and protected by the above-described means, both ends of the ceramic 13a bonded to the bottom wall 8 and the ceramics 13b, 13c of the side walls 9, 10 are damaged. Continuous gaps 16 and 17 are likely to be formed along the gas flow direction at the butt part with the lower end of the ceramic 1.
Since the surfaces of 3a, 13b, and 13c form smooth surfaces throughout the liner 7, the gas flow rate is high, and the liner 7 itself is worn out due to the high flow rate of the dust that has entered the gaps 16 and 17. I had a problem when I received it.
そこで、本発明の技術的課題は、ライナの底壁
部と側壁部とのコーナ部位でのライナ表面の摩耗
を効果的に防止する点にある。 Therefore, a technical object of the present invention is to effectively prevent wear of the liner surface at the corner portion between the bottom wall portion and the side wall portion of the liner.
本発明に係る耐摩耗送風機は、上記課題の解決
のために、底壁部と側壁部とを備えるライナのコ
ーナ部位にガスの流れ方向に沿つてセラミツクス
の表面に凹凸面を形成したことを手段としてい
る。
In order to solve the above-mentioned problems, the wear-resistant blower according to the present invention has a method in which an uneven surface is formed on the surface of the ceramic along the gas flow direction at the corner portion of the liner including the bottom wall portion and the side wall portion. It is said that
上述の手段によれば、ライナのコーナ部位では
ガスの流れる方向に沿つてセラミツクスの表面に
凹凸面が形成されているために、この凹凸面によ
つてセラミツクスの表面を流れてきたガスの流速
が弱められ、同時にセラミツクスの隙間に侵入し
たダストも流速も弱められることから、ダストに
よるライナの表面摩耗が防止できることになる。
According to the above-mentioned means, since an uneven surface is formed on the surface of the ceramic along the direction of gas flow at the corner portion of the liner, the flow velocity of the gas flowing on the surface of the ceramic is reduced by the uneven surface. At the same time, the dust that has entered the gaps between the ceramics and the flow velocity are also weakened, making it possible to prevent surface abrasion of the liner due to dust.
以下添付図面に基づいて本発明の実施例を詳細
に説明する。
Embodiments of the present invention will be described in detail below based on the accompanying drawings.
第１図は本発明に係る耐摩耗送風機に用いられ
るライナの一実施例を示したものであり、前述の
従来例と略同一の構成からなる羽根車１の各羽根
板２に、セラミツクス２１により内側面が被覆保
護されたチヤンンネル状のライナ２０がボルト１
１、ナツト１２によつて締結されている。 FIG. 1 shows an embodiment of the liner used in the wear-resistant blower according to the present invention, in which each vane plate 2 of the impeller 1, which has substantially the same structure as the conventional example described above, is made of ceramic 21. A channel-shaped liner 20 whose inner surface is coated and protected is attached to the bolt 1.
1. It is fastened with a nut 12.
ライナ２０は、前述の従来例とは異なつて、底
壁部２２と左右側壁部２３，２４が予め一体に形
成されたもので、その内側面全体に亘つてセラミ
ツクス２１が接合されている。このセラミツクス
２１の接合構造は、特にライナ２０の左右のコー
ナ部位２５，２６において、左側壁部２３の内側
面に接合されたセラミツクス２１ａの表面に底壁
部２２の内側面に接合されたセラミツクス２１ｂ
の端面が当接し、また、該セラミツクス２１ｂの
表面に右側壁部２４の内側面に接合されたセラミ
ツクス２１ｃの端面が当接した構造となつてい
る。 Unlike the conventional example described above, the liner 20 has a bottom wall 22 and left and right side walls 23 and 24 integrally formed in advance, and a ceramic 21 is bonded to the entire inner surface thereof. This bonding structure of the ceramics 21 is such that, particularly at the left and right corners 25 and 26 of the liner 20, the surface of the ceramic 21a bonded to the inner surface of the left wall portion 23 is joined to the surface of the ceramic 21b bonded to the inner surface of the bottom wall portion 22.
The end surface of the ceramic 21c that is joined to the inner surface of the right side wall portion 24 is in contact with the surface of the ceramic 21b.
そして、この実施例では、第２図に示すよう
に、上記コーナ部位２５，２６（図面上はライナ
２０の底壁部２２と左側壁部２３とのコーナ部位
２５のみ示す）におけるセラミツクス２１ａ，２
１ｂの表面がライナ２０の長手方向に沿つて不均
一なものとなつている。即ち、これらセラミツク
ス２１ａ，２１ｂは、直方体のセラミツクス小片
をライナ２０の内側面に多数敷き詰めてロウ付け
したものであるが、例えば底壁部２２に接合され
るセラミツクス小片のうち、小片Ａ，Ｂを他の標
準セラミツクス片２７の表面よりも突出させて設
け、また左側壁部２３に接合されるセラミツクス
小片のうち、小片Ｃ，Ｄを他の標準セラミツクス
片２８の表面より突出させて設けてある。 In this embodiment, as shown in FIG.
The surface of 1b is non-uniform along the length of liner 20. That is, these ceramics 21a and 21b are made by laying a large number of rectangular parallelepiped ceramic pieces on the inner surface of the liner 20 and brazing them. The ceramic pieces C and D are provided to protrude from the surface of the other standard ceramic pieces 27, and among the ceramic pieces to be joined to the left side wall portion 23, the pieces C and D are provided to protrude from the surface of the other standard ceramic pieces 28.
上記小片Ａ，Ｂは、第３図および第４図に示す
ように標準セラミツクス片２７と同一平面形状を
有するが、その高さ寸法h1が標準セラミツクス２
７の高さ寸法h2より大きく、約倍寸法のものとな
つている。一方、小片Ｃ，Ｄは、第５図に示すよ
うに、表面側に段部が形成された形状となつてお
り、下部の厚み寸法t1を第６図に示す標準セラミ
ツクス片２８の厚みに合わせ、上部をこれより約
倍の厚肉寸法t2としたものである。尚、段部より
下側の高さ寸法h3は上記標準セラミツクス片２７
が嵌り込む大きさとなつている。 The small pieces A and B have the same planar shape as the standard ceramic piece 27 , as shown in FIGS.
It is larger than the height dimension h 2 of No. 7, and is about twice as large. On the other hand, the small pieces C and D have a step formed on the surface side, as shown in FIG. In addition, the upper part has a thickness t 2 that is approximately twice that. In addition, the height dimension h3 below the stepped portion is the standard ceramic piece 27 mentioned above.
It is large enough to fit into it.
従つて、この実施例ではライナ２０の内側面を
セラミツクス２１で被覆保護した場合、第２図に
示すように、コーナ部位２５ではライナ２０の長
手方向に沿つて凹凸面が形成されることになる。
そのために、セラミツクス２１の表面をダストを
含むガスが流れた時、特にコーナ部位２５ではセ
ラミツクスの小片Ａ，Ｂ，Ｃ，Ｄが堰の役割を果
たし、ガスのスムーズな流れを妨げる。 Therefore, in this embodiment, when the inner surface of the liner 20 is covered and protected with ceramics 21, an uneven surface is formed along the longitudinal direction of the liner 20 at the corner portion 25, as shown in FIG. .
Therefore, when gas containing dust flows over the surface of the ceramic 21, the ceramic pieces A, B, C, and D act as a dam, particularly at the corner portions 25, and prevent the gas from flowing smoothly.
その結果、ガス中に含有されているダストも同
時に流勢が弱められることになり、仮にコーナ部
位２５においてセラミツクス２１ａと２１ｂとの
間に隙間が生じていてダストが侵入したとして
も、ダストによるライナ２０表面の摩耗は生じに
くいものとなる。 As a result, the flow force of the dust contained in the gas is also weakened at the same time, and even if there is a gap between the ceramics 21a and 21b at the corner part 25 and the dust enters, the liner due to the dust 20 surface wear is less likely to occur.
尚、上記実施例では一方のコーナ部位２５につ
いて説明したが、他方のコーナ部位２６について
も同様の構成となつている。 In the above embodiment, one corner portion 25 has been described, but the other corner portion 26 has a similar configuration.
また、ライナの構成も本実施例のように底壁部
と左右側壁部が予め一体となつている場合に限ら
れず、従来例のように、セラミツクスを接合した
のちに組付けるようにしたライナにも適用され
る。 Furthermore, the configuration of the liner is not limited to the case where the bottom wall and the left and right side walls are integrated in advance as in this embodiment, but the liner may be assembled after bonding ceramics as in the conventional example. also applies.
更に、上記実施例では標準セラミツクス片の表
面より突出させて凹凸面を形成した例について説
明したが、標準セラミツクスの表面より背の低い
セラミツクスを配置することで凹凸面を形成して
もよく、また両者を組合わせることもできる。そ
して更に、凹凸面を形成するためのセラミツクス
片の形状および数は上記実施例のものに限られな
いことは勿論である。 Furthermore, in the above embodiment, an example was explained in which an uneven surface was formed by protruding from the surface of a standard ceramic piece, but an uneven surface may also be formed by arranging ceramics that are shorter than the surface of the standard ceramic piece. A combination of both is also possible. Furthermore, it goes without saying that the shape and number of ceramic pieces for forming the uneven surface are not limited to those of the above embodiment.
以上説明したように、本発明に係る耐摩耗送風
機によれば、ライナのコーナ部位ではダストを含
むガスの流速が弱められることになるため、仮に
コーナ部位にセラミツクスの隙間が生じていてダ
ストが侵入したとしても、ダストによるライナ表
面の摩耗が起りにくいものとなり、ライナの耐久
性を一段と向上させることができた。
As explained above, according to the wear-resistant blower according to the present invention, the flow velocity of gas containing dust is weakened at the corner portions of the liner, so if a gap is created in the ceramics at the corner portions, dust may enter. Even so, wear of the liner surface due to dust is less likely to occur, and the durability of the liner can be further improved.
第１図は本発明に係る耐摩耗送風機の一実施例
を示すライナ取付部の断面図、第２図は第１図の
要部斜視図、第３図乃至第６図はセラミツクス片
の例を示す斜視図、第７図は送風機用羽根車の正
面図、第８図は第７図の縦断面図、第９図は従来
例におけるライナの取付部の断面図である。
１……羽根車、２……羽根板、７，２０……ラ
イナ、１３，２１……セラミツクス、２２……底
壁部、２３……左側壁部（側壁部）、２４……右
側壁部（側壁部）、２５，２６……コーナ部位。
Fig. 1 is a sectional view of a liner attachment part showing an embodiment of the wear-resistant blower according to the present invention, Fig. 2 is a perspective view of the main part of Fig. 1, and Figs. 3 to 6 show examples of ceramic pieces. FIG. 7 is a front view of the blower impeller, FIG. 8 is a vertical cross-sectional view of FIG. 7, and FIG. 9 is a cross-sectional view of a liner attachment portion in a conventional example. DESCRIPTION OF SYMBOLS 1... Impeller, 2... Vane plate, 7, 20... Liner, 13, 21... Ceramics, 22... Bottom wall part, 23... Left side wall part (side wall part), 24... Right side wall part (side wall portion), 25, 26...corner portion.
Claims (1)
スにより表面が被覆保護されたライナが取付けら
れてなる耐摩耗送風機において、 上記ライナは底壁部と側壁部とを備えており、
これら両壁部のコーナ部位ではガスの流れ方向に
沿つてセラミツクスの表面に凹凸面が形成されて
いることを特徴とする耐摩耗送風機。[Scope of Claims] 1. A wear-resistant blower in which a liner whose surface is coated and protected with ceramics is attached to each vane plate provided on the impeller, wherein the liner has a bottom wall portion and a side wall portion. Ori,
A wear-resistant blower characterized in that at the corners of both walls, an uneven surface is formed on the ceramic surface along the gas flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16092088A JPH0211899A (en) | 1988-06-30 | 1988-06-30 | Wear resisting blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16092088A JPH0211899A (en) | 1988-06-30 | 1988-06-30 | Wear resisting blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0211899A JPH0211899A (en) | 1990-01-16 |
| JPH0583757B2 true JPH0583757B2 (en) | 1993-11-29 |
Family
ID=15725155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16092088A Granted JPH0211899A (en) | 1988-06-30 | 1988-06-30 | Wear resisting blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0211899A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648601B2 (en) * | 2001-11-19 | 2003-11-18 | Good Earth Tools, Inc. | Labyrinth seal for fan assembly |
-
1988
- 1988-06-30 JP JP16092088A patent/JPH0211899A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0211899A (en) | 1990-01-16 |
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