IT8224293A1 - Group of centrifugal pump in block - Google Patents
Group of centrifugal pump in block Download PDFInfo
- Publication number
- IT8224293A1 IT8224293A1 IT1982A24293A IT2429382A IT8224293A1 IT 8224293 A1 IT8224293 A1 IT 8224293A1 IT 1982A24293 A IT1982A24293 A IT 1982A24293A IT 2429382 A IT2429382 A IT 2429382A IT 8224293 A1 IT8224293 A1 IT 8224293A1
- Authority
- IT
- Italy
- Prior art keywords
- shaft
- coupling
- pump
- slot
- centrifugal pump
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 22
- 238000010168 coupling process Methods 0.000 claims description 22
- 238000005859 coupling reaction Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
- F16D1/04—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
D E SCR IZI ONE DESCRIPTION
L'invenzione concerne un gruppo di pompa centrifuga a blocco con un albero della pompa, che nella zona dell'albero motore ? eseguito come albero cavo, ? sopportato semplicemente e tramite un giunto cava-chia vetta di accoppiamento ? accoppiato con l'albero motore penetrante nell'albero della pompa. The invention relates to a block centrifugal pump assembly with a pump shaft, which in the area of the motor shaft? performed as a hollow shaft,? supported simply and via a hollow-key joint coupling tip? coupled with the motor shaft penetrating the pump shaft.
I gruppi di pompa centrifuga a blocco con un cosiddetto albero di innesto e con soltanto un supporto della pompa, servente a sostenere forze radiali ed assiali, durante il funzionamento non ? necessario alcun vincolo geometrico fra albero della pompa ed albero del motore. Al momento dell'avviamento e dell'arresto del gruppo, se esiste un giuoco fra albero del motore ed albero della pompa si verificano forze di accelerazione sulla chiavetta di accoppiamento. Queste forze soprattutto all'atto dell'avviamento sono assai elevate, poich? l'albero motore ruota gi? in ragione di un determinato angolo di rotazione, prima che il fianco della chiavetta di accoppiamento venga ad appoggiarsi alla parete della cava. Nell'istante del contatto fra chiavetta di accoppiamento e parete della cava risulta particolarmente elevata l'accelerazione dell'albero della pompa e quindi la forza esercitata sulla superficie di contatto, per effetto della forza, che agisce di colpo e si verifica sempre nuovamente nel corso del periodo di funzionamento si verificano un?usura assai elevata e una rapida distruzione dell'accoppiamento cava-chiavetta di accoppiamento. Block centrifugal pump sets with a so-called clutch shaft and with only a pump holder, which serves to support radial and axial forces, during operation do not? no geometric constraint is necessary between the pump shaft and the motor shaft. When starting and stopping the unit, if there is a clearance between the motor shaft and the pump shaft, acceleration forces will occur on the coupling key. These forces, especially at starting, are very high, since? the crankshaft rotates down? at a given angle of rotation, before the side of the coupling key comes to rest against the wall of the slot. In the instant of contact between the coupling key and the wall of the groove, the acceleration of the pump shaft is particularly high and therefore the force exerted on the contact surface, due to the force, which acts suddenly and always occurs again in the course very high wear and rapid destruction of the coupling keyway-slot occurs during the period of operation.
L?invenzione si pone il compito di evitare mediante adeguati accorgimenti gli urti illustrati, pregiudicanti l'accoppiamento cava-chiavetta di accoppiamento, al momento dell'avviamento del gruppo. The invention has the task of avoiding, by means of suitable measures, the impacts illustrated, which could jeopardize the coupling of the coupling key-slot, at the moment of starting the unit.
Il problema posto viene risolto secondo l'invenzione per il fatto che nell'intercapedine esistente fra la chiavetta di accoppiamento e la parete della cava ? inserita una molla, che spinge la chiavetta di accoppiamento contro la parete della cava determinante per la trasmissione delle coppie. The problem posed is solved according to the invention due to the fact that in the gap existing between the coupling key and the wall of the slot? inserted a spring, which pushes the coupling key against the wall of the groove decisive for the transmission of the torques.
Grazie a questo accorgimento si ottiene che il fianco della chiavetta di accoppiamento gi? con l'arresto del gruppo si appoggia saldamente sulla parete della cava, che esso tocca anche durante la trasmissione della coppia del motore, pertanto non pu? pi? verificarsi un urto pregiudicante 1'accoppiamento cava-chiavetta di accoppiamento. Thanks to this arrangement it is obtained that the side of the coupling key already? with the stop of the group it rests firmly on the wall of the groove, which it also touches during the transmission of the motor torque, therefore it cannot? pi? a collision occurs which jeopardizes the coupling between the keyway and the coupling key.
In base ad un esempio di realizzazione l'invenzione viene illustrata pi? dettagliatamente. On the basis of an exemplary embodiment, the invention is illustrated more? in detail.
In particolare: In particular:
la Figura 1 mostra una sezione attraverso un gruppo di pompa centrifuga a blocco nella zona dell'accoppiamento fra motore e pompa, Figure 1 shows a section through a block centrifugal pump assembly in the area of the coupling between motor and pump,
la Figura 2 mostra la vista anteriore dell'accoppiamento cava-chiavetta di accoppiamento, e Figure 2 shows the front view of the slot-key coupling, e
la Figura 3 mostra la vista dall'alto di questo accoppiamento. Figure 3 shows the top view of this coupling.
Un albero 1 della pompa ? sopportato in un supporto 2 servente ad assorbire forze assiali e radiali. Nella parte dell'albero 1 della pompa eseguita come albero cavo penetra un albero 3 del motore. L?accoppiamento fra albero 1 della pompa ed albero motore 3 avviene tramite una chiavetta di accoppiamento 4 penetrante in una cava 5 dell'albero 1 della pompa. A pump shaft 1? supported in a support 2 serving to absorb axial and radial forces. A motor shaft 3 enters the part of shaft 1 of the pump which is designed as a hollow shaft. The coupling between shaft 1 of the pump and motor shaft 3 takes place by means of a coupling key 4 which penetrates into a slot 5 of the shaft 1 of the pump.
Fra la chiavetta di accoppiamento 4 e la cava 5 si ottiene un giuoco pi? o meno grande dipendente dalla precisione di fabbricazione, con riferimento alla trasmissione delle coppie questo giuoco pu? essere espresso anche come angolo di rotazione, per mezzo di una molla 6 inserita nella cava 5 viene prodotta una precarica, che manti?ne la chiavetta di accoppiamento 4 e la cava 5 che la alloggia nella posizione che essa assumerebbe dopo l'avviamento del motore e dopo il superamento di un possibile angolo di rotazione. Between the coupling key 4 and the slot 5, a larger clearance is obtained. or less large depending on the manufacturing precision, with reference to the transmission of the torques this game can? also expressed as rotation angle, by means of a spring 6 inserted in the slot 5 a preload is produced, which keeps the coupling key 4 and the slot 5 which houses it in the position it would assume after starting the engine and after exceeding a possible angle of rotation.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3145821A DE3145821C2 (en) | 1981-11-19 | 1981-11-19 | Block centrifugal pump unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT8224293A0 IT8224293A0 (en) | 1982-11-17 |
| IT8224293A1 true IT8224293A1 (en) | 1984-05-17 |
| IT1153053B IT1153053B (en) | 1987-01-14 |
Family
ID=6146707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT24293/82A IT1153053B (en) | 1981-11-19 | 1982-11-17 | CENTRIFUGAL PUMP GROUP IN BLOCK |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3145821C2 (en) |
| FR (1) | FR2516607B1 (en) |
| IT (1) | IT1153053B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173846A1 (en) * | 1984-08-07 | 1986-03-12 | Abbott Laboratories | Removable peristaltic pump head |
| FR2862355B1 (en) * | 2003-11-18 | 2006-02-10 | Ecl | SYSTEM FOR CONNECTING TWO TREES IN TRANSLATION |
| WO2013091036A1 (en) * | 2011-12-20 | 2013-06-27 | Weg Equipamentos Elétricos S.A., - Motores | System for transmitting torque between the actuation shaft and the actuated hub of rotary electric machines |
| RU2655447C2 (en) * | 2015-08-12 | 2018-05-28 | Игорь Павлович Трясцын | Submersible multistage centrifugal pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1522980A (en) * | 1923-05-08 | 1925-01-13 | Layne & Bowler Corp | Rotary-pump mechanism |
| DE1453793A1 (en) * | 1963-07-10 | 1969-06-19 | Klein Schanzlin & Becker Ag | Drive shaft for centrifugal pumps conveying aggressive media |
-
1981
- 1981-11-19 DE DE3145821A patent/DE3145821C2/en not_active Expired
-
1982
- 1982-11-08 FR FR8218656A patent/FR2516607B1/en not_active Expired
- 1982-11-17 IT IT24293/82A patent/IT1153053B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT1153053B (en) | 1987-01-14 |
| FR2516607B1 (en) | 1988-02-12 |
| DE3145821C2 (en) | 1984-04-05 |
| IT8224293A0 (en) | 1982-11-17 |
| FR2516607A1 (en) | 1983-05-20 |
| DE3145821A1 (en) | 1983-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19951128 |