JPH021533Y2 - - Google Patents
Info
- Publication number
- JPH021533Y2 JPH021533Y2 JP16176785U JP16176785U JPH021533Y2 JP H021533 Y2 JPH021533 Y2 JP H021533Y2 JP 16176785 U JP16176785 U JP 16176785U JP 16176785 U JP16176785 U JP 16176785U JP H021533 Y2 JPH021533 Y2 JP H021533Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- main bearing
- underwater
- bearings
- main
- 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
- 230000001681 protective effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Support Of The Bearing (AREA)
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、揚水ポンプ等の主軸を軸支し、無注
水起動が可能な水中軸受に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a submersible bearing that supports the main shaft of a water pump or the like and enables water-injected startup.
（従来の技術）
一般に、揚水ポンプ等の主軸を軸支する軸受
は、揚水ポンプによる自吸水若しくは他から強制
的に注水した潤滑水等に直接に浸されてこれらの
自吸水若しくは潤滑水による潤滑水膜で潤滑性能
を確保するカツトレスベアリングと呼ばれる水中
軸受が汎用されている。(Prior art) Generally, a bearing that pivotally supports the main shaft of a lift pump, etc. is directly immersed in self-priming water by the lifting pump or lubricating water forcibly injected from another source, and is lubricated by the self-priming water or lubricating water. Submerged bearings called cutless bearings, which ensure lubrication performance with a water film, are widely used.
ところで、揚水ポンプの自吸水に浸されて潤滑
水膜を形成する水中軸受にあつては、揚水ポンプ
の起動時はいまだ自吸水に浸されておらず、潤滑
水膜を形成できない無潤滑状態で主軸を軸支しな
ければならない。そこで、近年水中軸受を形成す
る材料として、カーボンや銅合金またはポリ４弗
化エチレン樹脂（PTFE）等の焼きつきにくい材
料が使用され、潤滑水膜を必要とせずに無注水起
動が可能に構成されている。 By the way, submersible bearings that form a lubricating water film by being immersed in the self-priming water of a lifting pump are not yet immersed in self-priming water when the pump starts up, and are in a non-lubricated state where a lubricating water film cannot be formed. The main shaft must be supported. Therefore, in recent years, materials that are less likely to seize, such as carbon, copper alloy, or polytetrafluoroethylene resin (PTFE), have been used to form underwater bearings, making it possible to start without water injection without the need for a lubricating water film. has been done.
（考案が解決しようとする課題）
上記したカーボンや銅合金またはポリ４弗化エ
チレン樹脂等の材料で形成された水中軸受は、焼
きつきにくく無注水起動可能であるが、耐摩耗性
に欠ける。このために、スラリーを多量に含む揚
液に水中軸受が浸される揚水ポンプでは、水中軸
受の摩耗が著しくその寿命の点で充分に満足でき
るものでない。(Problems to be Solved by the Invention) Submerged bearings made of materials such as carbon, copper alloy, or polytetrafluoroethylene resin described above are resistant to seizure and can be started without water injection, but lack wear resistance. For this reason, in pumps whose submersible bearings are immersed in pumped liquid containing a large amount of slurry, the submersible bearings are subject to significant wear and are not fully satisfactory in terms of service life.
そこで、硬くて耐摩耗性に富むセラミツク等の
材料で水中軸受を形成すれば、無注水起動が可能
であり、また寿命の点で充分に満足できるものと
なる。しかるに、セラミツクは脆くて衝撃力に極
めて弱く、揚水ポンプの組み立ておよび分解等に
おいて、セラミツクで形成された水中軸受に主軸
を挿通若しくは引き抜く際の芯合せ作業等で水中
軸受の端部に加わり易い衝撃力により容易に破壊
されてしまう。このために、セラミツクで形成さ
れた水中軸受を主軸に装着および分離する際は、
慎重な取り扱いが必要とされ作業性が悪いという
問題点がある。 Therefore, if the underwater bearing is made of a hard and wear-resistant material such as ceramic, it will be possible to start the bearing without water injection, and the bearing will be fully satisfactory in terms of service life. However, ceramic is brittle and extremely susceptible to impact forces, and during assembly and disassembly of a pump, shocks are likely to be applied to the end of the underwater bearing during alignment work when inserting or pulling out the main shaft from the underwater bearing made of ceramic. Easily destroyed by force. For this reason, when installing and separating the underwater bearing made of ceramic from the main shaft,
There is a problem that careful handling is required and workability is poor.
本考案の目的は、上記した従来の水中軸受の問
題点を解決すべくなされたもので、硬くて耐摩耗
性に富むが脆いセラミツクで形成された水中軸受
に加わる衝撃力を軽減させてその取り扱いが容易
となるようにした水中軸受を提供することにあ
る。 The purpose of this invention was to solve the above-mentioned problems with conventional underwater bearings, and it was designed to reduce the impact force applied to underwater bearings, which are made of hard and wear-resistant but brittle ceramics, so that they can be handled easily. An object of the present invention is to provide an underwater bearing that facilitates
（課題を解決するための手段）
かかる目的を達成するために、本考案の水中軸
受は、硬くて耐摩耗性に富むが脆いセラミツクで
形成された主軸受の軸心方向のすくなくとも主軸
が挿通される側の一端に、この主軸受と同じ内径
で前記セラミツクより弾性に富む樹脂で形成され
た保護軸受を同一軸心上に密接させて配設し、前
記主軸受の外周を緩衝材で覆い、さらにこの緩衝
材の外周を金属筒で覆つて構成されている。(Means for Solving the Problems) In order to achieve the above object, the underwater bearing of the present invention has a main shaft that is inserted at least in the axial direction of the main bearing, which is made of hard and wear-resistant but brittle ceramic. At one end of the main bearing, a protective bearing made of a resin having the same inner diameter as the main bearing and having more elasticity than the ceramic is disposed closely on the same axis, and the outer periphery of the main bearing is covered with a cushioning material, Furthermore, the outer periphery of this cushioning material is covered with a metal tube.
（作用）
硬くて耐摩耗性に富むが脆いセラミツクで形成
された主軸受に、弾性に富む樹脂で形成された保
護軸受を同一軸心上に密接させて配設したので、
この水中軸受に揚水ポンプ等の主軸を挿通する際
に、保護軸受が案内となつて主軸受に容易に挿通
でき、しかも挿通する際の芯合せ作業等で受け易
い衝撃力を保護軸受で受け止めることができ、主
軸受の受ける衝撃力を軽減し得る。また、主軸受
の外周を緩衝材で覆い、これをさらに金属筒で覆
うので、固定される金属筒に対して、揚水ポンプ
等の主軸の振動に伴なう主軸受の振動を、緩衝材
で吸収し得る。(Function) The main bearing is made of hard, wear-resistant but brittle ceramic, and the protective bearing made of highly elastic resin is placed close together on the same axis.
When inserting the main shaft of a water pump, etc. into this submersible bearing, the protective bearing acts as a guide so that it can be easily inserted into the main bearing, and the protective bearing can absorb the impact force that is easily received during alignment work etc. when inserting the submersible bearing. This reduces the impact force that the main bearing receives. In addition, since the outer periphery of the main bearing is covered with a cushioning material and this is further covered with a metal tube, the vibration of the main bearing caused by the vibration of the main shaft of a water pump, etc., is absorbed by the cushioning material against the fixed metal tube. Can be absorbed.
（実施例）
以下、本考案の実施例を第１図および第２図を
参照して説明する。第１図は、本考案の水中軸受
の軸方向断面図であり、第２図は、第１図のＡ−
Ａ断面図である。(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an axial cross-sectional view of the underwater bearing of the present invention, and FIG. 2 is an A--A--FIG.
It is an A sectional view.
第１図および第２図において、主軸受１は、炭
化珪素（SiC）または窒化珪素（Si3N4）等の非
酸化系の硬くて耐摩耗性に富むが脆いセラミツク
焼結体で形成される。また、保護軸受２，２は、
ポリ４弗化エチレン樹脂（PTFE）またはカーボ
ン含有フエノール樹脂等の無注水起動が可能で、
しかも主軸受１より若干弾性に富んだ樹脂で形成
される。そして、主軸受１と保護軸受２，２は、
同じ内径と外径を有し、同一軸心上で主軸受１の
両端に保護軸受２，２が密接されて一体に接合さ
れ、その接合体の両端の内径はテーパー状に端部
に向けて拡大されている。また、一体に接合され
た主軸受１と保護軸受２，２の外周は、合成ゴム
等の緩衝材３で覆われ、さらにこの緩衝材３の外
周は金属筒４で覆われている。 In FIGS. 1 and 2, the main bearing 1 is made of a hard, wear-resistant, but brittle non-oxidizing ceramic sintered body such as silicon carbide (SiC) or silicon nitride (Si 3 N 4 ). Ru. In addition, the protective bearings 2, 2 are
Polytetrafluoroethylene resin (PTFE) or carbon-containing phenolic resin can be started without water injection.
Moreover, it is made of a resin that is slightly more elastic than the main bearing 1. The main bearing 1 and the protection bearings 2, 2 are
Protective bearings 2, 2, which have the same inner diameter and outer diameter, are closely joined to both ends of the main bearing 1 on the same axis, and the inner diameters of both ends of the joined body are tapered toward the ends. It has been expanded. Further, the outer periphery of the main bearing 1 and the protection bearings 2, 2, which are integrally joined, is covered with a cushioning material 3 such as synthetic rubber, and the outer periphery of this cushioning material 3 is further covered with a metal tube 4.
かかる構成からなる水中軸受１０に、図示しな
い揚水ポンプ等の主軸を挿通する際は、水中軸受
１０と主軸との芯合わせが完全になされなくと
も、保護軸受２が案内として作用して容易に挿通
できる。しかも、芯ずれによる衝撃力を保護軸受
２で受けて主軸受１の受ける衝撃力を軽減でき、
衝撃力に脆い主軸受１を破損させることがない。
よつて、揚水ポンプ等の主軸を耐摩耗性に富む無
注水起動可能な主軸受１で軸支することができる
とともに、その取り扱いは容易であり作業性が改
善できる。また、揚水ポンプ等の主軸の振動に伴
ない主軸受１も振動するが、この振動を固定され
た金属筒４に対して緩衝材３で吸収でき、主軸受
１に過度な荷重が加えられることがない。 When inserting the main shaft of a water pump or the like (not shown) into the submersible bearing 10 having such a configuration, the protective bearing 2 acts as a guide and the insertion is easy even if the submersible bearing 10 and the main shaft are not completely aligned. can. Moreover, the impact force caused by misalignment can be received by the protective bearing 2, reducing the impact force applied to the main bearing 1.
The main bearing 1, which is fragile to impact forces, is not damaged.
Therefore, the main shaft of a water pump or the like can be supported by the main bearing 1 which is highly wear-resistant and can be started without water injection, and is easy to handle and workability can be improved. In addition, the main bearing 1 also vibrates due to the vibration of the main shaft of a water pump, etc., but this vibration can be absorbed by the buffer material 3 against the fixed metal cylinder 4, preventing excessive load from being applied to the main bearing 1. There is no.
第３図は、本考案の水中軸受の他の実施例の正
面図である。第３図に示す水中軸受２０は、主軸
受１の両端に配置される保護軸受２１を軸心まわ
りに分割して全周設けることなく等分配列して部
分的に設けたものである。 FIG. 3 is a front view of another embodiment of the underwater bearing of the present invention. In the underwater bearing 20 shown in FIG. 3, the protective bearings 21 disposed at both ends of the main bearing 1 are not divided around the axis and provided all around, but are arranged equally and partially.
第４図は、本考案の水中軸受のさらに他の実施
例の軸方向断面図である。第４図に示す水中軸受
３０は、保護軸受３１，３１の内周面に軸心まわ
りの溝３２，３２……を形成したものである。こ
の溝３２，３２……を形成することにより、スラ
リーを溝３２，３２……内に溜め置くことがで
き、主軸受１の耐久性をより一層向上させること
ができる。 FIG. 4 is an axial cross-sectional view of still another embodiment of the underwater bearing of the present invention. The underwater bearing 30 shown in FIG. 4 has grooves 32, 32, . . . formed around the axis on the inner peripheral surfaces of protective bearings 31, 31. By forming the grooves 32, 32..., slurry can be stored in the grooves 32, 32..., and the durability of the main bearing 1 can be further improved.
なお、上記実施例にあつては、主軸受１の軸心
方向両端に保護軸受２，２１，３１が密接配設さ
れているが、保護軸受２，２１，３１は主軸受１
の軸心方向のすくなくとも主軸が挿通される側の
一端に配設されていれば良い。 In the above embodiment, the protective bearings 2, 21, and 31 are closely arranged at both ends of the main bearing 1 in the axial direction.
It is sufficient that the main shaft is disposed at least at one end in the axial direction of the shaft through which the main shaft is inserted.
（考案の効果）
以上説明したように、本考案の水中軸受は、硬
くて耐摩耗性に富むが脆いセラミツクで形成され
た主軸受に、弾性に富む樹脂で形成された保護軸
受を密接させて同一軸心上に配設して水中軸受を
構成したので、この水中軸受に揚水ポンプ等の主
軸を挿通する際は、保護軸受が案内となつて主軸
受に容易に挿通でき、しかも挿通する際の芯合せ
作業で受け易い衝撃力を保護軸受で受け止めるこ
とができ、主軸受の受ける衝撃力を軽減できる。
したがつて、主軸受が脆いセラミツクで形成され
ていても破損させることがなく、その取り扱いは
容易で作業性の改善が図れる。また、揚水ポンプ
等の主軸の振動に伴なう主軸受の振動が、緩衝材
で吸収されるので、主軸受に過度な荷重が加えら
れることがなく、主軸受が圧壊されるようなこと
がないという優れた効果を奏する。(Effects of the invention) As explained above, the underwater bearing of the invention has a main bearing made of hard, wear-resistant but brittle ceramic, and a protective bearing made of highly elastic resin in close contact with it. Since the submersible bearings are arranged on the same axis, when inserting the main shaft of a pump, etc. into the submersible bearings, the protective bearing acts as a guide and can be easily inserted into the main bearing. The protective bearing can absorb the impact force that is easily received during alignment work, reducing the impact force that the main bearing receives.
Therefore, even if the main bearing is made of brittle ceramic, it will not be damaged, and its handling is easy and workability can be improved. In addition, the vibration of the main bearing caused by the vibration of the main shaft of a water pump, etc. is absorbed by the cushioning material, so excessive loads are not applied to the main bearing, and the main bearing is prevented from being crushed. It has the excellent effect of not being
第１図は、本考案の水中軸受の軸方向断面図で
あり、第２図は、第１図のＡ−Ａ断面図であり、
第３図は、本考案の水中軸受の他の実施例の正面
図であり、第４図は、本考案の水中軸受のさらに
他の実施例の軸方向断面図である。
１：主軸受、２，２１，３１：保護軸受、３：
緩衝材、４：金属筒、１０，２０，３０：水中軸
受、３２：溝。
FIG. 1 is an axial sectional view of the underwater bearing of the present invention, and FIG. 2 is an AA sectional view of FIG.
FIG. 3 is a front view of another embodiment of the underwater bearing of the present invention, and FIG. 4 is an axial sectional view of still another embodiment of the underwater bearing of the present invention. 1: Main bearing, 2, 21, 31: Protection bearing, 3:
Cushioning material, 4: Metal cylinder, 10, 20, 30: Underwater bearing, 32: Groove.
Claims (1)
成された主軸受の軸心方向のすくなくとも主軸
が挿通される側の一端に、この主軸受と同じ内
径で前記セラミツクより弾性に富む樹脂で形成
された保護軸受を同一軸心上に密接させて配設
し、前記主軸受の外周を緩衝材で覆い、さらに
この緩衝材の外周を金属筒で覆つて構成したこ
とを特徴とする水中軸受。 (2) 前記保護軸受の内周面に軸心まわりの溝を形
成したことを特徴とする実用新案登録請求の範
囲第１項記載の水中軸受。[Scope of Claim for Utility Model Registration] (1) At least one end of the main bearing in the axial direction of the main bearing, which is made of hard and wear-resistant but brittle ceramic, has the same inner diameter as the main bearing. Protective bearings made of a resin more elastic than the ceramic are disposed closely together on the same axis, the outer periphery of the main bearing is covered with a cushioning material, and the outer periphery of the cushioning material is further covered with a metal tube. Underwater bearings are characterized by: (2) The underwater bearing according to claim 1 of the utility model registration, characterized in that a groove around the axis is formed on the inner circumferential surface of the protective bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16176785U JPH021533Y2 (en) | 1985-10-22 | 1985-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16176785U JPH021533Y2 (en) | 1985-10-22 | 1985-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6269621U JPS6269621U (en) | 1987-05-01 |
| JPH021533Y2 true JPH021533Y2 (en) | 1990-01-16 |
Family
ID=31088387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16176785U Expired JPH021533Y2 (en) | 1985-10-22 | 1985-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021533Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2664146B2 (en) * | 1987-03-20 | 1997-10-15 | 株式会社日立製作所 | Ceramic bearing |
| JP3032076B2 (en) * | 1992-04-16 | 2000-04-10 | 株式会社東芝 | Thrust bearing |
| JP4704066B2 (en) * | 2005-02-23 | 2011-06-15 | 株式会社電業社機械製作所 | Vertical shaft pump |
| JP2014196820A (en) * | 2013-03-29 | 2014-10-16 | 積水化学工業株式会社 | Clamp for pipe joint |
-
1985
- 1985-10-22 JP JP16176785U patent/JPH021533Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6269621U (en) | 1987-05-01 |
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