JPH0234479Y2 - - Google Patents
Info
- Publication number
- JPH0234479Y2 JPH0234479Y2 JP1986015097U JP1509786U JPH0234479Y2 JP H0234479 Y2 JPH0234479 Y2 JP H0234479Y2 JP 1986015097 U JP1986015097 U JP 1986015097U JP 1509786 U JP1509786 U JP 1509786U JP H0234479 Y2 JPH0234479 Y2 JP H0234479Y2
- Authority
- JP
- Japan
- Prior art keywords
- wear
- resistant member
- plate
- resistant
- vane
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid 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
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は送風機などの羽根車の摩耗を防止する
ために装着される耐摩部材の取付構造の改良に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the mounting structure of a wear-resistant member installed to prevent wear of an impeller of a blower or the like.
羽根車、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、固形微粒子のダストを
多く含むガスを扱う送風機の羽根車では、特に摩
耗の起き易い部分に耐摩加工が必要であり、従来
の金属製ライナや耐摩肉盛に代わつて、最近では
非常に優れた耐摩性能を備えたセラミツクスの利
用が図られるようになつてきた。
Impellers, especially impellers for blowers that handle gas containing a lot of solid particulate dust, such as those used for boiler waste gas or for exhausting air with a lot of dirt and dust, require abrasion-resistant processing on parts that are particularly prone to wear. In place of conventional metal liners and wear-resistant overlays, ceramics, which have excellent wear resistance, have recently been used.
従来、この種の耐摩材としてセラミツクスを利
用する場合には、セラミツクス製の耐摩小片を羽
根の表面など摩耗の激しい部分に接着剤等によつ
て直接貼着して羽根板表面を保護するのが一般的
であつた。
Conventionally, when using ceramics as this type of wear-resistant material, it is best to protect the vane plate surface by directly attaching ceramic wear-resistant pieces to parts of the vane that are subject to severe wear, such as the surface of the vane, using an adhesive or the like. It was common.
しかしながら、上記従来の手段では羽根板表面
に接着剤等により直接耐摩片を貼着するものであ
つたために、耐摩片の取付作業や耐摩片が摩耗し
た時の交換作業等が面倒であつた他、接着剤での
貼着は高温での使用に耐え得ないものとなつてい
た。そこで本件出願人は、上記問題点を解決する
ための手段を先に提案した（実願昭59−169776
号）。 However, in the conventional method described above, the wear-resistant piece is directly attached to the surface of the vane plate using an adhesive or the like, so it is troublesome to attach the wear-resistant piece and replace the wear-resistant piece when it wears out. However, adhesive attachment could not withstand use at high temperatures. Therefore, the applicant proposed a means to solve the above problems (Utility Application No. 59-169776).
issue).
この手段は、第２図乃至第４図に示すように、
ハブ２、主板３、側板４および羽根板５とで構成
される羽根車１に対し、特に摩耗の激しい羽根板
５の表面および羽根板５の吸込側前端面に、第１
の耐摩部材６と第２の耐摩部材７をそれぞれ着脱
可能に装着したものである。第１の耐摩部材６は
羽根板５と略同一形状の金属製の保持板８と、こ
の保持板８上にロー付けされたセラミツク片９か
らなるもので、保持板８の裏面には締結具として
の複数のボルト１０が突設され、このボルト１０
を羽根板５の対応する部位に開設した長孔１１に
差し込み、これを羽根板５の裏面側から締結具と
してのナツト１２で締結することによつて羽根板
５の表面を被覆していた。 This means, as shown in FIGS. 2 to 4,
The impeller 1 is composed of a hub 2, a main plate 3, a side plate 4, and a vane plate 5. A first impeller 1 is provided on the surface of the vane plate 5, which is subject to particularly severe wear, and on the front end surface of the vane plate 5 on the suction side.
A wear-resistant member 6 and a second wear-resistant member 7 are each removably attached. The first wear-resistant member 6 consists of a metal holding plate 8 having approximately the same shape as the blade plate 5, and a ceramic piece 9 brazed onto the holding plate 8. A plurality of bolts 10 are provided protrudingly, and these bolts 10
The surface of the vane board 5 was covered by inserting it into a long hole 11 made in a corresponding part of the vane board 5 and fastening it with a nut 12 as a fastener from the back side of the vane board 5.
一方、羽根板５の前端面に装着される第２の耐
摩部材７は、金属小片からなる保持板１３とこの
保持板１３の先端部分に略Ｊ字形状となすようロ
ー付けされた２個のセラミツク部材１４，１５と
で構成されるもので、羽根板５の裏面に沿つて保
持板１３を配置し、この保持板１３に開設された
挿通孔１６に上記第１の耐摩部材６のボルト１０
を挿通し、保持板１３の裏面側から締め付けたナ
ツト１２によつて羽根板５に共締めされていた。
尚、保持板１３の後端部は回り止め用の小形ボル
ト１７によつて羽根板５に固定されていた。 On the other hand, the second wear-resistant member 7 attached to the front end surface of the blade plate 5 consists of a retaining plate 13 made of a small metal piece and two pieces brazed to the tip of the retaining plate 13 to form a substantially J-shape. A retainer plate 13 is arranged along the back surface of the blade plate 5, and the bolts 10 of the first wear-resistant member 6 are inserted into the insertion holes 16 formed in the retainer plate 13.
was inserted through the retaining plate 13 and tightened together with the wing plate 5 by a nut 12 which was tightened from the back side of the holding plate 13.
Incidentally, the rear end portion of the holding plate 13 was fixed to the vane plate 5 with a small bolt 17 for preventing rotation.
しかしながら、上述のような耐摩部材６，７の
取付構造では、羽根車１の回転によつて生ずる遠
心力（矢印Ａで示す方向）の作用でボルト１０が
長孔１１内を後方へ移動し、第１の耐摩部材６全
体が羽根板５の表面を滑つて後方側にずれてしま
うといつたことがある。この場合、羽根板５の前
端部５ａでは第２の耐摩部材７が上記ボルト１０
に共締めされているために、ボルト１０の後方移
動に伴なつて第２の耐摩部材７も一緒に後方へず
れ動いてしまい、羽根板５の前端部５ａにセラミ
ツク部材１４の後部がまともに衝突してセラミツ
ク部材１４を破損してしまうといつた問題があつ
た。
However, in the mounting structure of the wear-resistant members 6 and 7 as described above, the bolt 10 moves rearward within the elongated hole 11 due to the centrifugal force (in the direction shown by arrow A) generated by the rotation of the impeller 1. It has happened to me that the entire first wear-resistant member 6 slipped on the surface of the vane plate 5 and shifted rearward. In this case, the second wear-resistant member 7 is attached to the bolt 10 at the front end 5a of the blade plate 5.
As the bolts 10 move rearward, the second wear-resistant member 7 also shifts rearward, causing the rear part of the ceramic member 14 to be properly attached to the front end 5a of the vane plate 5. There was a problem in that the ceramic member 14 was damaged due to collision.
本考案は上述の観点に立つてなされたものであ
つて、その目的とするところは羽根車の回転によ
つて生ずる遠心力の作用で耐摩部材がずれ動くと
いつたことがなく、セラミツク片の破損を有効に
防止することのできる羽根車用耐摩部材の取付構
造を提供することにある。 The present invention has been developed based on the above-mentioned viewpoint, and its purpose is to prevent wear-resistant members from slipping due to the action of centrifugal force generated by the rotation of the impeller, and to prevent ceramic pieces from slipping. An object of the present invention is to provide a mounting structure for a wear-resistant member for an impeller that can effectively prevent damage.
本考案は上記目的達成のための手段として、保
持板とこの保持板上にロー付けされた耐摩片とで
形成された第１および第２の耐摩部材を羽根板の
表面と前端面にそれぞれ配置し、第１の耐摩部材
を固定する締結具によつて第２の耐摩部材を羽根
板に共締めしてなる羽根車用耐摩部材の取付構造
において、上記第１の耐摩部材の保持板にはその
前端部に羽根板の前端面に係止するつば部を設
け、このつば部の前方に隙間を介在させて第２の
耐摩部材を配置し、この隙間を第２の耐摩部材を
締結する際に保持板が羽根板に沿つて前後方向に
動き得る最大範囲より大きく形成した取付構造に
よつてなされる。
As a means for achieving the above object, the present invention provides first and second wear-resistant members formed of a retaining plate and a wear-resistant piece brazed on the retaining plate, which are arranged on the surface and front end surface of the vane, respectively. In the impeller wear-resistant member mounting structure in which the second wear-resistant member is fastened to the vane plate using a fastener that fixes the first wear-resistant member, the retaining plate of the first wear-resistant member has a A flange portion that locks onto the front end surface of the vane is provided at its front end, and a second wear-resistant member is disposed with a gap in front of the flange portion, and this gap is used when fastening the second wear-resistant member. This is accomplished by a mounting structure that is larger than the maximum range in which the holding plate can move in the front-rear direction along the vane.
以下添付図面に基づいて本考案の実施例を詳細
に説明する。
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第１図に示す本考案の一実施例において、耐摩
部材は、先の提案例と同様、羽根板５の表面に被
覆される第１の耐摩部材６と、羽根板５の前端面
に被覆される第２の耐摩部材７とで構成される。
第１の耐摩部材６は羽根板５と略同一形状の金属
製保持板８と、この保持板８上にロー付けされた
セラミツク片９とからなるが、この実施例では保
持板８の吸込側前端部にその幅方向に亘つて下方
側へ延びるつば部１９が形成される。このつば部
１９は保持板８の前端部に別部材を溶接したもの
か、又は保持板８の成形時に前端部分を折曲形成
したものであつてもよいが、このつば部１９の長
さ寸法は羽根板５の厚さ以下にしておくのが望ま
しい。一方、第２の耐摩部材７は、金属小片から
なる保持板１３と、この保持板１３の先端部分に
略Ｊ字形状をなすようにロー付けされた２個のセ
ラミツク部材１４，１５とからなる。 In one embodiment of the present invention shown in FIG. 1, the wear-resistant members include a first wear-resistant member 6 coated on the surface of the vane plate 5 and a first wear-resistant member 6 coated on the front end surface of the vane plate 5, as in the previous proposed example. and a second wear-resistant member 7.
The first wear-resistant member 6 consists of a metal holding plate 8 having approximately the same shape as the blade plate 5, and a ceramic piece 9 brazed onto the holding plate 8. In this embodiment, the suction side of the holding plate 8 is A flange portion 19 is formed at the front end portion and extends downward in the width direction. This flange portion 19 may be made by welding a separate member to the front end of the retaining plate 8, or may be formed by bending the front end portion during molding of the retaining plate 8, but the length dimension of this flange portion 19 It is desirable that the thickness be less than the thickness of the blade plate 5. On the other hand, the second wear-resistant member 7 consists of a retaining plate 13 made of a small metal piece, and two ceramic members 14 and 15 brazed to the tip of the retaining plate 13 so as to form a substantially J-shape. .
次に、上記耐摩部材６，７の取付手段について
説明すれば、先ず、羽根板５の表面上に第１の耐
摩部材６を配置し、羽根板５に開設された長孔１
１内に保持板８の裏面に溶接された締結具として
のボルト１０を差し込む。この場合、保持板８の
前端部に形成したつば部１９を羽根板５の前端部
５ａより先方に突出させ、該つば部１９で羽根板
５の前端面を覆い隠すと共に羽根板５の表面に保
持板８の裏面を密着させ、羽根板５の裏面側から
締結具としてのナツト１２で締結する。次に、第
２の耐摩部材７を羽根板５の前端部５ａ前方に配
設する。即ち、第２の耐摩部材７のセラミツク部
材１４を上記つば部１９の前方に隙間t1を介在さ
せて配置し、羽根板５の裏面に沿つて配設した保
持板１３の挿通孔１６に上記第１の耐摩部材６の
ボルト１０を挿通し、保持板１３の裏面側から締
め付けたナツト１２によつて羽根板５に共締めす
る。なお、上記隙間t1の大きさは、少なくとも第
２の耐摩部材７を締結する際、羽根板５に沿つて
保持板１３を取付け位置調整のために前後方向に
動かし得る範囲、即ち保持板１３の挿通孔１６に
ボルト１０を挿通させた時にボルト１０の前後に
生ずる隙間（t2＋t3）より大きく設定してある。 Next, to explain the means for attaching the wear-resistant members 6 and 7, first, the first wear-resistant member 6 is placed on the surface of the blade plate 5, and the elongated hole 1 formed in the blade plate 5 is
A bolt 10 as a fastener welded to the back surface of the holding plate 8 is inserted into the holding plate 1. In this case, the flange 19 formed at the front end of the retaining plate 8 is made to protrude forward from the front end 5a of the slat 5, and the flange 19 covers the front end surface of the slat 5 and also covers the surface of the slat 5. The back side of the holding plate 8 is brought into close contact with the holding plate 8, and the blade plate 5 is fastened from the back side with a nut 12 as a fastener. Next, the second wear-resistant member 7 is disposed in front of the front end portion 5a of the vane plate 5. That is, the ceramic member 14 of the second wear-resistant member 7 is placed in front of the flange portion 19 with a gap t 1 interposed therebetween, and the ceramic member 14 of the second wear-resistant member 7 is placed in the insertion hole 16 of the retaining plate 13 disposed along the back surface of the vane plate 5. The bolts 10 of the first wear-resistant member 6 are inserted, and together they are tightened to the vane plate 5 with the nuts 12 tightened from the back side of the holding plate 13. The size of the gap t 1 is determined at least within the range in which the holding plate 13 can be moved forward and backward along the blade plate 5 to adjust the mounting position when the second wear-resistant member 7 is fastened, that is, the size of the holding plate 13 The gap is set to be larger than the gap (t 2 +t 3 ) that occurs before and after the bolt 10 when the bolt 10 is inserted through the insertion hole 16 .
従つて、この実施例では羽根板５の前端部５ａ
と第２の耐摩部材７のセラミツク部材１４との間
につば部１９が介在する取付構造となつているの
で、羽根車１の回転によつて羽根板５に遠心力
（矢印Ａで示す方向）が生じたとしても、第１の
耐摩部材６は羽根板５の前端部５ａにつば部１９
が係止するために後方への移動が妨げられる。ま
た、これによつて第１の耐摩部材６のボルト１０
も長孔１１内を移動しないために、このボルト１
０の一つに共締めされた第２の耐摩部材７も最初
の固定状態が保持されることとなり、第１の耐摩
部材６との取付位置関係は取付時と変わらない。
その結果、第２の耐摩部材７のセラミツク部材１
４が羽根板５に衝突するといつたこともなく、セ
ラミツク部材１４の破損を有効に防止できること
になる。また、第２の耐摩部材７の保持板１３が
これを締結しているナツト１２の緩み等でガタ付
いたような場合でも、このガタ付きにより保持板
１３が前後方向に移動し得る最大範囲よりセラミ
ツク部材１４後端の隙間t1の幅の方が大きいの
で、保持板１３がＡ方向に最大限移動したとして
もセラミツク部材１４が第１の耐摩部材６のつば
部１９に衝突して破損するといつたこともない。 Therefore, in this embodiment, the front end 5a of the blade plate 5
Since the mounting structure is such that the collar portion 19 is interposed between the ceramic member 14 of the second wear-resistant member 7, centrifugal force (in the direction shown by arrow A) is applied to the blade plate 5 by the rotation of the impeller 1. Even if the first wear-resistant member 6
is locked, preventing backward movement. Moreover, as a result, the bolt 10 of the first wear-resistant member 6
In order to prevent the bolt from moving inside the elongated hole 11,
The second wear-resistant member 7 co-tightened to one of the two wear-resistant members 7 is also maintained in its initial fixed state, and its attachment positional relationship with the first wear-resistant member 6 remains the same as when it was attached.
As a result, the ceramic member 1 of the second wear-resistant member 7
4 collides with the vane plate 5, and damage to the ceramic member 14 can be effectively prevented. Furthermore, even if the retaining plate 13 of the second wear-resistant member 7 is loose due to loosening of the nut 12 that fastens it, the retaining plate 13 may move within the maximum range in the front-rear direction due to the looseness. Since the width of the gap t 1 at the rear end of the ceramic member 14 is larger, even if the retaining plate 13 moves to the maximum in the A direction, if the ceramic member 14 collides with the collar 19 of the first wear-resistant member 6 and is damaged. Never before.
以上説明したように本考案に係る羽根車用耐摩
部材の取付構造によれば、第１の耐摩部材の保持
板の前端部につば部を設けたので、羽根車の回転
によつて生ずる遠心力の作用によつて羽根板に装
着した耐摩部材がずれ動いて他の部材と衝突する
といつたこともなく、また第２の耐摩部材が締結
具の緩みなどでガタ付いたとしても他の部材と衝
突することもないので、耐摩部材の破損を有効に
防止することができた。
As explained above, according to the mounting structure of the wear-resistant member for an impeller according to the present invention, since the collar is provided at the front end of the retaining plate of the first wear-resistant member, the centrifugal force generated by the rotation of the impeller is Due to the action of Since there was no collision, damage to the wear-resistant members could be effectively prevented.
第１図は本考案に係る耐摩部材の取付構造の一
実施例を示す断面図、第２図は羽根車の一例を示
す正面図、第３図は第２図の縦断面図、第４図は
従来における耐摩部材の取付構造の一例を示す断
面図である。
５……羽根板、６……第１の耐摩部材、７……
第２の耐摩部材、８……第１の耐摩部材の保持
板、９……セラミツク片（耐摩片）、１０……ボ
ルト（締結具）、１２……ナツト（締結具）、１３
……第２の耐摩部材の保持板、１４，１５……セ
ラミツク部材（耐摩片）。
Fig. 1 is a sectional view showing an embodiment of the mounting structure for a wear-resistant member according to the present invention, Fig. 2 is a front view showing an example of an impeller, Fig. 3 is a longitudinal sectional view of Fig. 2, and Fig. 4 1 is a sectional view showing an example of a conventional mounting structure for a wear-resistant member. 5... Wing plate, 6... First wear-resistant member, 7...
Second wear-resistant member, 8... Holding plate of first wear-resistant member, 9... Ceramic piece (wear-resistant piece), 10... Bolt (fastener), 12... Nut (fastener), 13
...Second wear-resistant member holding plate, 14, 15...Ceramic member (wear-resistant piece).
Claims (1)
にロー付けされたセラミツク製の耐摩片９，１４
とで形成された第１の耐摩部材６および第２の耐
摩部材７を羽根板５の表面と前端面にそれぞれ配
置し、第１の耐摩部材６を固定する締結具１０，
１２によつて第２の耐摩部材７を羽根板５に共締
めしてなる羽根車用耐摩部材の取付構造におい
て、 上記第１の耐摩部材６の保持板８にはその前端
部に羽根板５の前端面に係止するつば部１９を設
け、このつば部１９の前方に隙間t1を介在させて
第２の耐摩部材７を配置し、この隙間t1を第２の
耐摩部材７を締結する際に保持板１３が羽根板５
に沿つて前後方向に動き得る最大範囲より大きく
形成したことを特徴とする羽根車用耐摩部材の取
付構造。[Scope of claims for utility model registration] Metal retaining plates 8, 13 and these retaining plates 8, 13
Ceramic wear-resistant pieces 9, 14 brazed to
A fastener 10 for fixing the first wear-resistant member 6 and a second wear-resistant member 7 formed by arranging the first wear-resistant member 6 and the second wear-resistant member 7 on the surface and front end surface of the vane plate 5, respectively;
In the mounting structure of the wear-resistant member for an impeller in which the second wear-resistant member 7 is fastened to the blade plate 5 together with the blade plate 5, the retaining plate 8 of the first wear-resistant member 6 has the blade plate 5 at its front end. The second wear-resistant member 7 is disposed in front of the collar 19 with a gap t 1 interposed therebetween, and the second wear-resistant member 7 is fastened to the front end of the collar 19 . When the holding plate 13 is
A mounting structure for a wear-resistant member for an impeller, characterized in that the mounting structure is larger than the maximum range in which it can move in the front-rear direction along the .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986015097U JPH0234479Y2 (en) | 1986-02-06 | 1986-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986015097U JPH0234479Y2 (en) | 1986-02-06 | 1986-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62128197U JPS62128197U (en) | 1987-08-13 |
| JPH0234479Y2 true JPH0234479Y2 (en) | 1990-09-17 |
Family
ID=30805710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986015097U Expired JPH0234479Y2 (en) | 1986-02-06 | 1986-02-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0234479Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177797U (en) * | 1983-05-10 | 1984-11-28 | 株式会社荏原製作所 | Impeller for blower |
-
1986
- 1986-02-06 JP JP1986015097U patent/JPH0234479Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62128197U (en) | 1987-08-13 |
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