CN103562555A - Centrifugal electric pump for suction of aeriform fluids with liquids anti-infiltration device - Google Patents
Centrifugal electric pump for suction of aeriform fluids with liquids anti-infiltration device Download PDFInfo
- Publication number
- CN103562555A CN103562555A CN201280010863.6A CN201280010863A CN103562555A CN 103562555 A CN103562555 A CN 103562555A CN 201280010863 A CN201280010863 A CN 201280010863A CN 103562555 A CN103562555 A CN 103562555A
- Authority
- CN
- China
- Prior art keywords
- motor
- suction tank
- liner
- axle
- electric pump
- 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.)
- Pending
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
- Centrifugal Separators (AREA)
Abstract
A centrifugal electric pump (1) for suction of aeriform fluids with liquids anti-infiltration device, comprises: an electric motor (2) equipped with a shaft (3); a cylindrical suction box (4) associated with said motor (2), provided with an intake (5) for aeriform fluid, with at least one exhaust port (6) and with a closing cover (7) also arranged for acting as base for said motor (2); at least one fan (8), fitted onto said shaft (3) and driven in movement by said motor (2); a bearing (9) interposed between said shaft and said base of said suction box; a liquids anti-infiltration device (10) arranged between said electric motor (2) and said suction box (4), provided with a gasket (11), wherein said gasket (11) rotates along with said drive shaft (3) and comprises a cylindrical main body (13) associated with said shaft, and a truncated-cone shaped sealing lip that cooperates with the flat face of a metal ring (12), provided between the bearing and the cover (7) of said suction box (4) to produce watertight closure of said box.
Description
The present invention relates to the field of fluid machinery for gas jet.
Especially, the present invention relates to liquid impervious device, for single-stage or multistage centrifugal pump and the induced draft fan by motor operation, be particularly suitable for the vaccum centrifugal pump for vacuum dust collector and floor cleaning machine, for the air that comprises dust, foam or liquid by absorption, come clean surface, for family or industry and professional environment.
Traditional centrifugal electric pump for draw gas jet comprises high-revolving motor and cylindrical suction tank substantially, and suction tank is equipped with the entrance of draw fluid and the floss hole of at least one exhaust fluid.The motion of the fluid in the inner chamber of suction tank causes by wherein pacifying at least one impeller or the fan of shape on the axle of described motor.
The ball bearing binding site between water suction case lid and motor main shaft being arranged in annular groove inserts, and main shaft and the parts that are fixed thereon can be rotated.
Similar pump is generally used for vacuum dust collector or floor cleaning machine is created vacuum in collecting tank, piles up the dust or the liquid that in air amount stream, contain in collecting tank.
These centrifugal electric pumps that are used for gas jet have and have a serious defect: between the spreadable life, due to geometrical shape and the operating tolerance of size of the pressure reduction forming between working pressure and suction tank and motor region, parts, the leak of liquid towards motor occupied area occurs in the coupling bearing near the live axle in suction tank.
Liquid, or even only have foam or the moisture in air amount, can damage the ball bearing of supporting driving shaft, cause oxidation, wear and tear too early, lower efficiency and increase consequent noise.
Adversely, it is necessary that the various operations of maintenance and renewal part become, also with corresponding surcharge.
The solution of this problem is disclosed in U. S. Patent 6 472 786, and the liquid sealing device that it has been described for centrifugal electric pump stops the moisture movement of motor vertically.
Above-mentioned seal arrangement is arranged on around the ring liner in the annular groove of axle and obtains by one, and the compression that is suitable for being applied to due to water suction case lid the pressure on the metal washer relevant to bearing is out of shape.
Above-mentioned liner is arranged on lid and live axle rotates by slip thereon.
The sealing in the space obtaining between closing axle, bearing and metal washer is guaranteed by the inward flange of above-mentioned ring liner and the contact between axle.
Adversely, contact and enclosed point are very little, are simply to shelve substantially, so poor performance and along with the wearing and tearing of liner are aging rapidly.
It is more how unfavorable to also have, and accurately calculate and accurate calibration in the space that the distortion of ring liner must must occupy according to it between compression period: the design of the liner that each is independent and be selected to an accurate and strict operation, and be not easy to copying of series electrical pump group.
When ring liner weares and teares, sealing weakens and without any compensation, necessary like this renewal part, follows relevant surcharge and time loss.
Liner, by the surface of rubbing action, as the outer surface of live axle, must obtain through suitable processing the specific minimizing of roughness value.Produce buckling curve a little complexity and trouble.
The object of the invention is to be equipped with liquid reverse osmosis unit by production protects the centrifugal electric pump of live axle spring bearing to come draw gas jet to overcome these restrictions.
Another object of the present invention is to produce highly reliable, to be easy to install, be suitable for any live axle and part tolerance anti-intrusion device, this device has the durability of enhancing, stops or reduces annex assembly apparatus and limit production and the surface-treated expense of metal seal.
These objects are to use the centrifugal electric pump for extracting gases jet thoroughly installing with liquid impervious to obtain, and it comprises:
The motor of-outfit axle;
-cylindrical the suction tank associated with above-mentioned motor, is equipped with the gas jet entrance of installing with respect to suction tank base portion center, at least one floss hole of installing on side surface and be also used as the closing cap of motor base portion;
-at least one fan, is arranged on axle and by motor movement and drives, and for drawing air stream from entrance, makes air stream rotation and is discharged into outside suction tank by least one floss hole;
Bearing between-insertion axle and suction tank base portion;
The liquid impervious of-outfit liner installs thoroughly, is arranged between motor and suction tank;
It is characterized in that, described liner rotates with live axle, and comprise the cylinder-shaped body relevant to axle and with the conical butt seal lip of the plane cooperation of metal ring, the water seal that produces suction tank between bearing and the lid of suction tank is closed.
Especially, described liner is V-ring formula, has elastic body and seal lip.
According to one embodiment of present invention, spacer ring inserts between live axle and liner.
Advantage of the present invention is as follows:
Major advantage is to produce splendid hydraulic seal between the suction tank of centrifugal electric pump and its motor, has benefited from the shape of liner used and the correlation technique of type and installation.
In fact, liner turns round in the best way, and in the abutment surface sliding friction of the axis perpendicular to axle, abutment surface consists of the plane of metal connecting ring.
Another advantage is that the plane of in fact described metal ring is easy to grinding disposing, without excessive increase expense, just can between liner and ring, obtain better sealing, and the wearing and tearing of minimizing liner lip also increase the durability of device.
Therefore, metal ring makes to apply suitable material and is suitable for optimizing the surface treatment coordinating with liner seal lip to become possibility.
In addition, the selection of the given thickness of metal ring can make the distance between liner and slipper seal surface obtain suitable compensation.
Liner used is pressed with a little following:
-being very easy to install, the execution of operation needs or does not need simple tool, expands the assistance of the inner diameter that is arranged on the cylinder circumferential body on axle;
-there is low friction, therefore produce low-down frictional loss;
-can also dally;
-due to elastic characteristic, it does not need contact surface to have very high roughness value;
-it can not cause any wearing and tearing and not need specific tolerance and roughness value on live axle;
-single liner can easily drip the different-diameter that adapts to live axle.
According to anti-intrusion device of the present invention, structure due to the cooperation between parts, their location and liner, guarantee even excellent sealing under liner part abrasion condition: the external pressure being applied on liner that the progressive wearing and tearing of seal lip produce by suction tank compensates, it is limited to liner contacting metal in any case in abutting connection with the plane of ring.
Also have more advantages, do not have liquid to avoid possible wearing and tearing and damage towards bearing leak protection bearing, prevent from causing getting rusty of noise producing.
Another advantage is simply, as long as described liner is remained on correct position by the operation pressure in electric pump, does not need to add fixed element and special clamping system.
Accompanying drawing explanation
Under the description of preferred embodiment and the help of accompanying drawing being provided by the example of exemplary and indefiniteness hereinafter, it is clearer that these and other advantages will become, wherein:
Fig. 1 and 4 has shown respectively viewgraph of cross-section and the local axis side view of the centrifugal pump for draw gas jet that is equipped with the saturating device of liquid impervious according to the present invention;
Fig. 2 has shown the sectional view of the details of pump in Fig. 1;
Fig. 3 has shown according to the sectional view of the combination details of possibility embodiment's of the present invention pump.
Embodiment
With reference to figure 1,2 and 4, shown the centrifugal electric pump for draw gas jet of cooperation liquid anti-intrusion device in accordance with a preferred embodiment of the present invention.
Electric pump 1 is substantially by being equipped with the motor 2, suction tank 4 of live axle 3 and for driving the fan 8 of air stream F to form.
Suction tank 4 is cylindrical, comprises the rounded bottom and the side surface of being furnished with at least one discharge orifice 6 of the suction port 5 that install at outfit center, and is associated with the axle 3 that inserts bearing 9.
Suction tank 4, by lid 7 sealings at top, covers 7 and is also used as the base portion of motor 2.
Fan 8 is installed to live axle 3 and the motion by motor 2 drives.
For the annular groove 18 that covers bearing 9 at motor shaft 3 with cover between 7.
With particular reference to Fig. 2, liquid impervious thoroughly installs 10 and comprises liner 11 and metal ring 12.
The liner of this form is generally made by nitrile rubber.
With reference to figure 3, rubber reducer 16 is substituted by the wave washer 17 being equal to.
The operating method of anti-intrusion device is as follows:
V-ring liner is arranged on motor shaft 3 and with its rotation.Main body 13 interference are arranged on axle 3 and keep lip 14 at correct position.Especially, lip 14 hydraulic seal of approximal surface of the metal ring 12 installed perpendicular to axle 3 that creates antagonism.
In use, the high pressure in the elasticity of seal lip 14 and suction tank 14 contributes to keep spacer ring 15 to be pressed in to cover on 7, also push down liner 11.Lip 14 distortion, increase and lean against the surface area on metal ring 12, thereby stop any leak of liquid in motor 2.
Claims (3)
1. the centrifugal electric pump for extracting gases jet (1) thoroughly installing with liquid impervious, comprising:
The motor (2) of-outfit axle (3);
-cylindrical the suction tank (4) associated with described motor (2), is equipped with entrance gas jet for (5) installed with respect to suction tank base portion (4 ') center, side surface (upper at least one floss hole (6) of installing of 4 ") and be also used as the closing cap (7) of motor (2) base portion;
-at least one fan (8), is arranged on axle (3) above and is driven by motor (2) motion, for drawing air stream (F) from described entrance (5), air stream is rotated and pass through at least one floss hole (6) to be discharged into outside suction tank (4);
Bearing (9) between-insertion axle and suction tank base portion;
The liquid impervious of-outfit liner (11) installs (10) thoroughly, is arranged between motor (2) and suction tank (4);
It is characterized in that, described liner (11) rotates with live axle (3), and comprise the cylinder-shaped body relevant to axle (13) and with the conical butt seal lip (14) of the plane cooperation of metal ring (12), the water seal that produces suction tank between bearing and the lid (7) of suction tank (4) is closed.
2. centrifugal electric pump as claimed in claim 1 (1), is characterized in that, described liner is V-ring formula, has elastic body (13) and seal lip (14).
3. centrifugal electric pump as claimed in claim 1 (1), is characterized in that, a spacer ring (15) inserts between live axle (3) and liner (11).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITCR2011A000002 | 2011-01-18 | ||
| IT000002A ITCR20110002A1 (en) | 2011-01-18 | 2011-01-18 | CENTRIFUGAL ELECTRIC PUMP FOR ASPIRATION OF FLUIDS AERIFORMS WITH ANTI-INFILTRATION DEVICE OF LIQUIDS |
| PCT/IT2012/000015 WO2012098568A1 (en) | 2011-01-18 | 2012-01-16 | Centrifugal electric pump for suction of aeriform fluids with liquids anti-infiltration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103562555A true CN103562555A (en) | 2014-02-05 |
Family
ID=43975302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280010863.6A Pending CN103562555A (en) | 2011-01-18 | 2012-01-16 | Centrifugal electric pump for suction of aeriform fluids with liquids anti-infiltration device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130302189A1 (en) |
| EP (1) | EP2665939B1 (en) |
| CN (1) | CN103562555A (en) |
| IT (1) | ITCR20110002A1 (en) |
| RS (1) | RS58371B1 (en) |
| WO (1) | WO2012098568A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281847A (en) * | 2018-10-12 | 2019-01-29 | 上海舟水电器有限公司 | A kind of novel drip-proof fan structure |
| CN110617237A (en) * | 2018-06-19 | 2019-12-27 | 株式会社阿我妻 | Bearing seal and water supply pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208522576U (en) * | 2017-09-13 | 2019-02-19 | 日本电产株式会社 | Motor, air supply device and dust catcher |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380416A (en) * | 1978-09-25 | 1983-04-19 | Societe Internationale De Mecanique Industrielle S.A. | Centrifugal pumps |
| DE9111745U1 (en) * | 1991-09-20 | 1992-12-10 | Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen, De | |
| CN2924097Y (en) * | 2005-10-17 | 2007-07-18 | 宜兴市宙斯泵业有限公司 | Mechanical seal for sand-slurry pump |
| CN101113787A (en) * | 2006-05-30 | 2008-01-30 | 瑞典滚珠轴承公司 | Low-friction annular sealing assembly for a centrifugal pump, in particular an internal combustion engine cooling liquid pump |
| US20090280004A1 (en) * | 2008-05-06 | 2009-11-12 | Finkenbinder David B | Labyrinth seal for a motor-fan unit |
| US20100143091A1 (en) * | 2008-12-10 | 2010-06-10 | Marshall Saville | Vacuum generator seal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6472786B1 (en) | 2000-11-17 | 2002-10-29 | Ametek, Inc. | Bearing protection assembly for motors |
| US8297949B1 (en) * | 2009-02-17 | 2012-10-30 | Mancl Scott C | Bearing seal for a wet vacuum motor |
-
2011
- 2011-01-18 IT IT000002A patent/ITCR20110002A1/en unknown
-
2012
- 2012-01-16 RS RS20190204A patent/RS58371B1/en unknown
- 2012-01-16 WO PCT/IT2012/000015 patent/WO2012098568A1/en active Application Filing
- 2012-01-16 EP EP12704926.0A patent/EP2665939B1/en active Active
- 2012-01-16 US US13/979,898 patent/US20130302189A1/en not_active Abandoned
- 2012-01-16 CN CN201280010863.6A patent/CN103562555A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380416A (en) * | 1978-09-25 | 1983-04-19 | Societe Internationale De Mecanique Industrielle S.A. | Centrifugal pumps |
| DE9111745U1 (en) * | 1991-09-20 | 1992-12-10 | Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen, De | |
| CN2924097Y (en) * | 2005-10-17 | 2007-07-18 | 宜兴市宙斯泵业有限公司 | Mechanical seal for sand-slurry pump |
| CN101113787A (en) * | 2006-05-30 | 2008-01-30 | 瑞典滚珠轴承公司 | Low-friction annular sealing assembly for a centrifugal pump, in particular an internal combustion engine cooling liquid pump |
| US20090280004A1 (en) * | 2008-05-06 | 2009-11-12 | Finkenbinder David B | Labyrinth seal for a motor-fan unit |
| US20100143091A1 (en) * | 2008-12-10 | 2010-06-10 | Marshall Saville | Vacuum generator seal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617237A (en) * | 2018-06-19 | 2019-12-27 | 株式会社阿我妻 | Bearing seal and water supply pump |
| CN110617237B (en) * | 2018-06-19 | 2022-11-18 | 株式会社阿我妻 | Bearing seal and water supply pump |
| CN109281847A (en) * | 2018-10-12 | 2019-01-29 | 上海舟水电器有限公司 | A kind of novel drip-proof fan structure |
Also Published As
| Publication number | Publication date |
|---|---|
| ITCR20110002A1 (en) | 2012-07-19 |
| EP2665939A1 (en) | 2013-11-27 |
| EP2665939B1 (en) | 2018-12-12 |
| US20130302189A1 (en) | 2013-11-14 |
| RS58371B1 (en) | 2019-03-29 |
| WO2012098568A1 (en) | 2012-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140205 |
|
| WD01 | Invention patent application deemed withdrawn after publication |