JP2551566Y2 - Pump casing for centrifugal pump - Google Patents
Pump casing for centrifugal pumpInfo
- Publication number
- JP2551566Y2 JP2551566Y2 JP1087091U JP1087091U JP2551566Y2 JP 2551566 Y2 JP2551566 Y2 JP 2551566Y2 JP 1087091 U JP1087091 U JP 1087091U JP 1087091 U JP1087091 U JP 1087091U JP 2551566 Y2 JP2551566 Y2 JP 2551566Y2
- Authority
- JP
- Japan
- Prior art keywords
- pump casing
- suction cover
- pump
- recessed
- diameter
- 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 - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
【０００１】
【産業上の利用分野】本考案は、渦巻ポンプのポンプケ
ーシングに関するものである。
【０００２】
【従来の技術】ポンプの固有性能として吐出量を変化さ
せたい場合、通常は羽根車径または羽根車巾を増減して
設計し、同時に渦流室の横径または軸方向寸法をそれに
対応して増減させる必要がある。
【０００３】
【考案が解決しようとする課題】しかし従来のポンプケ
ーシングでは、渦流室の横径および軸方向寸法が不変の
構造に作られているため、羽根車径や羽根車巾が変更さ
れると、それに合わせてポンプケーシングも、渦流室の
横径や軸方向寸法の異なるものを新作する必要があり、
コストアップの要因となる。
【０００４】本考案の目的は、内装される羽根車径に対
応させて渦流室の横径を変更し得られる渦巻ポンプのポ
ンプケーシングを提供することにある。
【０００５】
【問題を解決するための手段】本考案に係わる渦巻ポン
プのポンプケーシングにおいては、吸込カバーの外縁部
分を上下に凸出させてポンプケーシング周壁に形成し、
一方の周壁をポンプケーシング上壁の周辺部へ接続させ
ることにより吸込カバーの一面上に渦流室を凹設させ、
また、他方の周壁をポンプケーシング上壁の周辺部へ接
続させることにより吸込カバーの他面上に渦流室を凹設
させ、かつ、吸込カバーの一面上に凹設される渦流室の
横径が、吸込カバーの他面上に凹設される渦流室の横径
よりも狭小に構成されている。
【０００６】
【実施例】以下実施例の図面により説明をする。
【０００７】１はポンプケーシング上壁、２はポンプケ
ーシング上壁１の下方においてモーター軸に嵌着された
羽根車、４は羽根車２の羽根板下縁２ｅと裏返し自在に
対向する吸込カバーであって、中央部に吸込孔５を穿設
し、外縁部分を上下に凸出させてポンプケーシング周壁
６ａ，６ｂに形成し、各周壁６ａ，６ｂの端縁部をポン
プケーシング上壁１の周辺部下縁への取付部に形成す
る。そして図１のように吸込カバー４の一面４ｅを羽根
車２の羽根板下縁２ｅに対向させ、一方の周壁６ａをポ
ンプケーシング上壁１の周辺部下縁へ接続させることに
より吸込カバー４の一面４ａ上に渦流室７ａが凹設され
る。また、図２のように吸込カバー６の他面６ｂを羽根
車２の羽根板下縁２ｅに対向させ、他方の周壁６ｂをポ
ンプケーシング上壁１の周辺部下縁へ接続させることに
より吸込カバー４の他面４ｂ上に渦流室７ｂが凹設され
る。ただし、吸込カバー４の一面４ａ上に凹設される渦
流室７ａの横径は、吸込カバー４の他面４ｂ上に凹設さ
れる渦流室７ｂの横径よりも狭小に構成されていること
を必要とする。
【０００８】８‥‥８は取付ボルト、９‥‥９はポンプ
ケーシング周壁６ａおよび６ｂの取付部に配設されたボ
ルト挿通孔、１０‥‥１０はポンプケーシング上壁１の
周辺部にその下縁から穿設されたネジ孔である。
【０００９】前述のようにして一方の周壁６ａをポンプ
ケーシング上壁１の周辺部下縁へ対向させた場合には、
吸込カバー４の一面４ａ上に横径の小さな渦流室７ａが
構成せられ、また、他方の周壁６ｂをポンプケーシング
上壁１の周辺部下縁へ対向させた場合には、吸込カバー
４の他面４ｂ上に横径の大きな渦流室７ｂが構成され
る。これらいずれかの状態により、取付ボルト８‥‥８
をボルト挿通孔９‥‥９からネジ孔１０‥‥１０へ螺着
して、吸込カバー４と一体のポンプケーシング周壁６
ａ，６ｂをポンプケーシング上壁１の周辺部下縁へ着脱
自在に定着させるのである。
【００１０】そして図１の使用例においては羽根車径の
小さな渦巻ポンプに適したポンプケーシングが構成せら
れ、図２の使用例においては羽根車径の大きな渦巻ポン
プに適したポンプケーシングが構成せられることにな
る。従って図１の使用例における吸込カバー４を取り外
してこれを裏返し、他面４ｂを羽根板下縁２ｅに対向さ
せた状態により再び吸込カバー４を定着させると、横径
の大きな渦流室７ｂが構成されて、羽根車径の大きな渦
巻ポンプに適したポンプケーシングとなり、吐出量を増
大させることができるのである。
【００１１】
【考案の効果】本考案によれば、吸込カバーの取付面を
変更するだけの簡単な作業により、渦流室の横径を広狭
二様に変更して、内装される羽根車径に即座に対応させ
て吐出量の変更を可能とすることができ、極めて便利で
ある。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump casing of a centrifugal pump. 2. Description of the Related Art When it is desired to change the discharge rate as a specific performance of a pump, it is usually designed to increase or decrease the impeller diameter or the impeller width, and at the same time, adjust the lateral diameter or axial dimension of the vortex chamber. It is necessary to increase or decrease. [0003] However, in the conventional pump casing, the diameter and the width of the impeller are changed because the lateral diameter and the axial dimension of the swirl chamber are made invariable. In addition, it is necessary to make a new pump casing with a different horizontal diameter and axial dimension of the vortex chamber,
This will increase costs. An object of the present invention is to provide a pump casing of a centrifugal pump in which the lateral diameter of a swirl chamber can be changed according to the diameter of an impeller to be installed. In the pump casing of the centrifugal pump according to the present invention, the outer peripheral portion of the suction cover is formed so as to protrude up and down on the peripheral wall of the pump casing.
By connecting one peripheral wall to the peripheral portion of the upper wall of the pump casing, a vortex chamber is recessed on one surface of the suction cover,
Further, by connecting the other peripheral wall to the peripheral portion of the upper wall of the pump casing, the swirl chamber is recessed on the other surface of the suction cover, and the lateral diameter of the swirl chamber recessed on one surface of the suction cover is reduced. The swirl chamber formed on the other surface of the suction cover has a smaller diameter than the lateral diameter of the swirl chamber. An embodiment will be described below with reference to the drawings. Reference numeral 1 denotes an upper wall of the pump casing, 2 denotes an impeller fitted to the motor shaft below the upper wall 1 of the pump casing, and 4 denotes a suction cover which faces the lower edge 2e of the blade plate of the impeller 2 so as to be able to turn over. In addition, a suction hole 5 is formed in the center, and the outer edge portion is formed so as to protrude up and down in the peripheral walls 6a and 6b of the pump casing, and the edge of each peripheral wall 6a and 6b is formed in the periphery of the upper wall 1 of the pump casing. It is formed in the attachment part to the lower edge. As shown in FIG. 1, one surface 4e of the suction cover 4 is opposed to the lower edge 2e of the blade plate of the impeller 2, and one peripheral wall 6a is connected to the lower edge of the peripheral portion of the upper wall 1 of the pump casing. A swirl chamber 7a is recessed on 4a. 2, the other surface 6b of the suction cover 6 is opposed to the lower edge 2e of the blade plate of the impeller 2, and the other peripheral wall 6b is connected to the lower edge of the peripheral portion of the upper wall 1 of the pump casing. The swirl chamber 7b is recessed on the other surface 4b. However, the lateral diameter of the swirl chamber 7a recessed on one surface 4a of the suction cover 4 is configured to be smaller than the lateral diameter of the swirl chamber 7b recessed on the other surface 4b of the suction cover 4. Need. 8 ‥‥ 8 is a mounting bolt, 9 ‥‥ 9 is a bolt insertion hole provided in the mounting portion of the pump casing peripheral walls 6a and 6b, and 10 ‥‥ 10 is a peripheral portion of the pump casing upper wall 1 below. It is a screw hole drilled from the edge. When one of the peripheral walls 6a faces the lower edge of the peripheral portion of the upper wall 1 of the pump casing as described above,
When a swirl chamber 7a having a small lateral diameter is formed on one surface 4a of the suction cover 4, and the other peripheral wall 6b is opposed to the lower edge of the peripheral portion of the pump casing upper wall 1, the other surface of the suction cover 4 is formed. A swirl chamber 7b having a large lateral diameter is formed on 4b. By any of these states, the mounting bolt 8/8
Is screwed from the bolt insertion hole 9 # 9 into the screw hole 10 # 10, and the pump casing peripheral wall 6 integrated with the suction cover 4 is screwed.
a, 6b is detachably fixed to the lower edge of the peripheral portion of the upper wall 1 of the pump casing. In the use example of FIG. 1, a pump casing suitable for a centrifugal pump having a small impeller diameter is formed, and in the use example of FIG. 2, a pump casing suitable for a centrifugal pump having a large impeller diameter is formed. Will be done. Therefore, when the suction cover 4 in the usage example of FIG. 1 is removed and turned over, and the suction cover 4 is fixed again in a state where the other surface 4b is opposed to the lower edge 2e of the blade plate, the swirl chamber 7b having a large lateral diameter is formed. As a result, a pump casing suitable for a centrifugal pump having a large impeller diameter can be obtained, and the discharge amount can be increased. According to the present invention, the horizontal diameter of the swirl chamber is changed into two dimensions by a simple operation of changing the mounting surface of the suction cover, and the diameter of the impeller to be installed is reduced. It is possible to change the discharge amount in an immediate correspondence, which is extremely convenient.
【図面の簡単な説明】
【図１】本考案ポンプケーシングを備えた渦巻ポンプの
要部縦断側面図であって、羽根車径の小さな場合に対応
させた状態を示す。
【図２】本考案ポンプケーシングを備えた渦巻ポンプの
要部縦断側面図であって、羽根車径の大きな場合に対応
させた状態を示す。
【図３】本考案ポンプケーシングにおける吸込カバーお
よびポンプケーシング周壁部分の縦断側面図である。
【図４】本考案ポンプケーシングにおける吸込カバーお
よびポンプケーシング周壁部分の一面から見た平面図で
ある。
【図５】本考案ポンプケーシングにおける吸込カバーお
よびポンプケーシング周壁部分の他面から見た平面図で
ある。
【符号の説明】
１ ポンプケーシング上壁
４ 吸込カバー
４ａ 吸込カバーの一面
４ｂ 吸込カバーの他面
６ａ 一方の周壁
６ｂ 他方の周壁
７ａ 吸込カバーの一面に凹設される渦流室
７ｂ 吸込カバーの他面に凹設される渦流室BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional side view of a main part of a centrifugal pump provided with a pump casing of the present invention, showing a state corresponding to a case where an impeller diameter is small. FIG. 2 is a longitudinal sectional side view of a main part of the centrifugal pump provided with the pump casing of the present invention, showing a state corresponding to a case where the impeller diameter is large. FIG. 3 is a vertical sectional side view of a suction cover and a peripheral wall portion of the pump casing in the pump casing of the present invention. FIG. 4 is a plan view of the suction cover and the peripheral wall of the pump casing in the pump casing of the present invention. FIG. 5 is a plan view of the suction cover and the peripheral wall portion of the pump casing in the pump casing of the present invention as viewed from the other side. DESCRIPTION OF THE SYMBOLS 1 Upper wall of pump casing 4 Suction cover 4a One surface 4b of suction cover The other surface 6a of suction cover One peripheral wall 6b The other peripheral wall 7a Swirl chamber 7b recessed on one surface of the suction cover The other surface of the suction cover Swirl chamber recessed in
Claims (1)
ケーシング周壁（６ａ，６ｂ）に形成し、一方の周壁
（６ａ）をポンプケーシング上壁（１）の周辺部へ接続
させることにより吸込カバー（４）の一面（４ａ）上に
渦流室（７ａ）を凹設させ、また、他方の周壁（６ｂ）
をポンプケーシング上壁（１）の周辺部へ接続させるこ
とにより吸込カバー（４）の他面（４ｂ）上に渦流室
（７ｂ）を凹設させ、かつ、吸込カバー（４）の一面
（４ａ）上に凹設される渦流室（７ａ）の横径が、吸込
カバー（４）の他面（４ｂ）上に凹設される渦流室（７
ｂ）の横径よりも狭小に構成されていることを特徴とす
る、渦巻ポンプのポンプケーシング。(57) [Claims for Registering Utility Model] The outer peripheral portion of the suction cover (4) is formed so as to protrude up and down on the pump casing peripheral walls (6a, 6b), and one peripheral wall (6a) is formed on the pump casing upper wall (6). The vortex chamber (7a) is recessed on one surface (4a) of the suction cover (4) by being connected to the peripheral portion of 1), and the other peripheral wall (6b) is formed.
Is connected to the peripheral portion of the upper wall (1) of the pump casing, so that the swirl chamber (7b) is recessed on the other surface (4b) of the suction cover (4), and one surface (4a) of the suction cover (4) is formed. ), The lateral diameter of the vortex chamber (7a) recessed above the vortex chamber (7) recessed on the other surface (4b) of the suction cover (4).
A pump casing for a centrifugal pump, characterized in that the pump casing is configured to be narrower than the lateral diameter of b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1087091U JP2551566Y2 (en) | 1991-02-05 | 1991-02-05 | Pump casing for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1087091U JP2551566Y2 (en) | 1991-02-05 | 1991-02-05 | Pump casing for centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0653797U JPH0653797U (en) | 1994-07-22 |
| JP2551566Y2 true JP2551566Y2 (en) | 1997-10-22 |
Family
ID=11762378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1087091U Expired - Fee Related JP2551566Y2 (en) | 1991-02-05 | 1991-02-05 | Pump casing for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2551566Y2 (en) |
-
1991
- 1991-02-05 JP JP1087091U patent/JP2551566Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0653797U (en) | 1994-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2551566Y2 (en) | Pump casing for centrifugal pump | |
| US20010041136A1 (en) | Blowing apparatus | |
| JP2009127612A (en) | Venturi structure of fan motor | |
| WO2021241340A1 (en) | Drain pump | |
| JP2551567Y2 (en) | Centrifugal pump | |
| CN202176522U (en) | Air blower and fan frame | |
| JP2947087B2 (en) | Anti-vibration device for preceding standby pump | |
| CN216691561U (en) | Tower fan base | |
| JP2569630Y2 (en) | Centrifugal pump | |
| CA1079874A (en) | Surface aeration impeller | |
| CN209908846U (en) | Drainage pump for air conditioner with mounting structure | |
| CN220037074U (en) | Electronic water pump for automobile | |
| CN218816540U (en) | Multi-runner impeller and efficient energy-saving turbine | |
| JP2556330Y2 (en) | Centrifugal pump | |
| CN210033897U (en) | Direct current draught fan | |
| KR950003973Y1 (en) | Impellor joint device of motor for vacuum cleaner | |
| KR970001917Y1 (en) | Fan of a vacuum cleaner | |
| KR200144545Y1 (en) | Impeller assembly of vacuum cleaner | |
| KR890004032Y1 (en) | Impeller of suction cleaners | |
| JPH0730959Y2 (en) | Centrifugal pump | |
| JP2525822Y2 (en) | Centrifugal pump | |
| JP2551568Y2 (en) | Centrifugal pump strainer | |
| JP2538635Y2 (en) | Centrifugal pump | |
| CN112152381A (en) | Motor, pump and belt cleaning device with damping function | |
| KR200351356Y1 (en) | Self-priming pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |