CN105283670B - Motor centrifugal pump including bearing block - Google Patents
Motor centrifugal pump including bearing block Download PDFInfo
- Publication number
- CN105283670B CN105283670B CN201480033019.4A CN201480033019A CN105283670B CN 105283670 B CN105283670 B CN 105283670B CN 201480033019 A CN201480033019 A CN 201480033019A CN 105283670 B CN105283670 B CN 105283670B
- Authority
- CN
- China
- Prior art keywords
- motor
- centrifugal pump
- bearing block
- gap
- pump according
- 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.)
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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
- F04D13/0606—Canned motor pumps
- F04D13/0633—Details of the bearings
-
- 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
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of motor centrifugal pump, its gap set or gap tank for including surrounding motor rotor, bearing block is provided with the motor between motor rotor and pump impeller in gap set or gap tank, the bearing block has the journal bearing of guiding motor drive shaft, wherein, the integral bearing seat carries the shaft sealer of ring discoid on the side towards pump impeller, and the shaft sealer is encapsulated by the material injection of bearing block.
Description
Technical field
The present invention relates to a kind of motor centrifugal pump, its gap set or gap tank for including surrounding motor rotor, in the gap
It is provided with bearing block in set or gap tank on the motor between motor rotor and pump impeller, the bearing block has guiding motor drive shaft
Journal bearing.
Background technology
The journal bearing of supporting rotor is lubricated by medium to be conveyed in wet impeller pump.Medium to be conveyed usually by from
The particle contamination of pipe-line system.If in the rotor chamber of the filtered entrance pump of these particles, bearing wear is significantly increased.If
Grain is accumulated on magnet rotor, and ladle cover structure can be damaged based on abrasion, is especially destroyed.In order to avoid or at utmost drop
Low particle enters, it is known that the filter medium before medium enters rotor chamber.In addition, sealing or minimizing gap, especially as far as possible
It is the gap between axle and journal bearing.For the sealing between axle and journal bearing, usually using face seals, footpath
To Simmer ring or special seal device, it must be installed to axle as single part by a single installation steps
In bearing.
The content of the invention
The task of the present invention is to improve the motor centrifugal pump that beginning puies forward type, to simplify structure and installation, reduction
Manufacture and installation cost and improve sealing, long durability and operational reliability.
According to the present invention, the task is solved by following manner：Integral bearing seat band on the side towards pump impeller
There is the shaft sealer of ring discoid, the shaft sealer is encapsulated by the material injection of bearing block.
In the bearing block according to the present invention of wet impeller pump, sealing element is integrated on bearing block.Based on one
Property --- surrounded, eliminate Simmer ring engagement to the installation on bearing block individually by plastic bearing seat in this sealing element
Process.The precision between axle and sealing element is also improved, this can improve sealing and long durability.
Sealing element generally has outer seal ring, and outer seal ring formation is connected with the outside of adjacent members.Eliminate
This additional member.Improve operational reliability and reduce manufacture and installation cost.
It is preferred that providing, bearing block is made up of plastics or metal.Also advantageously, plate-like shaft sealer is in pump chamber and radial direction
There is sealing function between bearing and especially rotor chamber.
Preferably, plate-like shaft sealer is made of plastics.Particularly advantageously, plate-like shaft sealer is by fabric, nothing
Spin cloth or felt is made.It can be fibre-reinforced, be combined with PTFE nonwoven cloth material in this non-woven fabrics.
Propose in addition, plate-like shaft sealer additionally has the function of filter.The material of plate-like shaft sealer
Can be conductive.There can be graphite for the material of this plate-like shaft sealer.
It is preferred that propose, at least one passage is set in bearing block, the passage covers pump chamber and gap or gap tank
Inner space is connected.Therefore ensure that rotor chamber is liquid filled and therefore lubricates shaft sealer from the beginning.This institute
Stating passage should extend parallel to rotor axis.
Brief description of the drawings
Accompanying drawing illustrates a kind of embodiment of the present invention and the following detailed description of the embodiment with axial section.
Embodiment
The motor centrifugal pump of wet rotor structure pattern includes gap and covered or gap tank, and gap set or gap tank surround motor
Rotor.Close to pump impeller using the bearing block 1 being made of plastics in gap set or gap tank, bearing block closing gap set or
Gap tank and journal bearing 2 is supported, journal bearing supporting motor/pump axle.Annular bearing block 1 has outer annular flange herein
3, the flange is mounted on the inwall of gap set/gap tank with clamping sealed mode.
Coaxially load with axle and journal bearing 2 on the side towards pump impeller in bearing block 1 ring discoid,
Especially flexible, non-shape stable shaft sealer 4.The coaxial cavity 5 of ring-type, axle are constituted around axle in this bearing block
The outward flange of sealing device 4 is stretched into the inwall 6 of the cavity.
The shaft sealer 4 of flat ring discoid has impartial 1 to 3mm thickness.
Potted component 4 is placed into the mould of injection machine and by the plastics of bearing block 1 in the manufacturing process of bearing block 1
Shape injection encapsulated in locking manner.The sealing area important for sealing of potted component 4 is exposed by bearing block.
Potted component 4 can be used as diaphragm and filter the medium for entering rotor chamber.It can be used as the material of potted component 4
Elastomer diaphragm, non-woven fabrics, felt, fabric and conductive material.Potted component 4 can also be fibre-reinforced, be combined with poly- four
The nonwoven cloth material of PVF (PTFE).In addition, the material of plate-like shaft sealer 4 can also have graphite, therefore it is conductive
's.
Therefore, when using the bearing block being made of plastics, shaft sealer 4 can be put into the injection for manufacturing bearing block
In mould.In the manufacturing process of script, present shape is in locking manner and if necessary hermetically with the one of plastics encirclement potted component
A little regions.In addition, journal bearing can also be put into injection mold and together be injection molding encapsulating.It is derived from above-mentioned advantage
The prefabricated component of high accuracy.
I.e. non-woven fabrics can be soaked or in combination by another material in the case of potted component 4, possibility, and this can improve sealing
Effect, the friction of minimum and axle, extension allow useful life and determine permeability.
Therefore, potted component 4 can have following function to shaft sealer in other words：
1. sealing
It is sealed in the rotor chamber between axle and journal bearing.
2. media filtration
Fabric/diaphragm of potted component 4 can also have to filter to enter from pump chamber in addition to the function relative to sealing to be turned
The function of the medium of seed cell.By the permeability of potted component can farthest be lowered into rotor chamber particle, which
I guess the particle of very small dimensions.In addition can be by selecting filtering material to adjust the flow of medium percolation rotor chamber.
3. the electric conductivity of element
The material of the potted component 4 of engagement shaft may be configured to conduction.Pass through the conductive contacts with conductive adjacent members
And be carefully connected to them on the ground connection of product, it can compensate for potential difference of the rotor relative to remaining product current potential.
4. the diaphragm for compensating pressure differential
When producing the pressure differential relative to pump chamber based on such as temperature difference in rotor chamber, it can be worked by being used as diaphragm
Potted component 4 compensate the pressure differential.
In another scheme, in bearing block 1 set passage 7, the passage pump impeller is rotated where pump chamber and motor
Rotor chamber connection and therefore covered with gap or the inside of gap tank connect so that pump up move after produced immediately in rotor chamber
Raw enough liquid is used to lubricate shaft sealer.Parallel to rotor axis and pump shaft axle can be accordingly parallel in this passage 7
Line extends.A diameter of the 3 to 5mm of the passage.
Claims (11)
1. a kind of motor centrifugal pump, include surrounding the gap set of motor rotor or gap tank, in gap set or gap tank
Bearing block (1) is provided between motor rotor and pump impeller on the motor, the bearing block has the journal bearing of guiding motor drive shaft
(2), it is characterised in that the bearing block (1) carries the shaft sealer (4) of ring discoid, the axle on the side towards pump impeller
Sealing device is encapsulated by the material injection of bearing block.
2. motor centrifugal pump according to claim 1, it is characterised in that the bearing block (1) is made up of plastics or metal.
3. motor centrifugal pump according to claim 1 or 2, it is characterised in that the shaft sealer (4) of the plate-like is in pump
There is sealing function between room and journal bearing (2) or between pump chamber and rotor chamber.
4. motor centrifugal pump according to claim 1, it is characterised in that the shaft sealer (4) of the plate-like is by plastics
It is made.
5. motor centrifugal pump according to claim 1, it is characterised in that the shaft sealer (4) of the plate-like by fabric,
Non-woven fabrics or felt are made.
6. motor centrifugal pump according to claim 5, it is characterised in that the non-woven fabrics is fibre-reinforced, is combined with
PTFE nonwoven cloth material.
7. motor centrifugal pump according to claim 1, it is characterised in that the shaft sealer (4) of the plate-like is additionally
Function with filter.
8. motor centrifugal pump according to claim 1, it is characterised in that the material of the shaft sealer (4) of the plate-like
It is conductive.
9. motor centrifugal pump according to claim 8, it is characterised in that the material of the shaft sealer (4) of the plate-like
With graphite.
10. motor centrifugal pump according to claim 1, it is characterised in that be provided with least one in the bearing block (1)
Passage (7), the passage covers pump chamber with gap or the inner space of gap tank is connected.
11. motor centrifugal pump according to claim 10, it is characterised in that the passage (7) is prolonged parallel to rotor axis
Stretch.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013007624.2A DE102013007624A1 (en) | 2013-05-02 | 2013-05-02 | Motor centrifugal pump with a bearing carrier |
| DE102013007624.2 | 2013-05-02 | ||
| PCT/EP2014/000823 WO2014177242A1 (en) | 2013-05-02 | 2014-03-27 | Motor-driven centrifugal pump comprising a bearing support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105283670A CN105283670A (en) | 2016-01-27 |
| CN105283670B true CN105283670B (en) | 2017-09-12 |
Family
ID=50390045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480033019.4A Active CN105283670B (en) | 2013-05-02 | 2014-03-27 | Motor centrifugal pump including bearing block |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2992215B1 (en) |
| CN (1) | CN105283670B (en) |
| DE (1) | DE102013007624A1 (en) |
| WO (1) | WO2014177242A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3622269A1 (en) * | 1986-07-03 | 1988-01-14 | Richard Halm | Canned motor pump |
| EP0207430A3 (en) * | 1985-07-01 | 1988-08-03 | Easthorpe Investments Ltd. | Centrifugal pump |
| EP0320060A2 (en) * | 1987-12-11 | 1989-06-14 | Philips Patentverwaltung GmbH | Pump device for low-viscosity liquids |
| EP0287984A3 (en) * | 1987-04-22 | 1990-05-23 | Askoll S.P.A. | Improved centrifugal pump for electric household appliances such as washing machines, dishwashers and the like |
| EP0520303A2 (en) * | 1991-06-22 | 1992-12-30 | Grundfos A/S | Sliding-contact bearing with an elastic mantle for a centrifugal-pump motor |
| CN2315337Y (en) * | 1997-11-28 | 1999-04-21 | 江西有色地质机械厂 | Improved sand pump |
| EP1703135A2 (en) * | 2005-02-25 | 2006-09-20 | Wilo Ag | Can of a centrifugal motor pump |
| DE202009008204U1 (en) * | 2009-06-09 | 2009-08-27 | Hanning Elektro-Werke Gmbh & Co. Kg | Canned motor for centrifugal pumps |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2667653B1 (en) * | 1990-10-05 | 1995-01-27 | Electro Mec Nivernais | CENTRIFUGAL MOTOR PUMP. |
| DE102012203615B4 (en) * | 2012-03-07 | 2013-11-21 | Hanning Elektro-Werke Gmbh & Co. Kg | pump |
-
2013
- 2013-05-02 DE DE102013007624.2A patent/DE102013007624A1/en not_active Withdrawn
-
2014
- 2014-03-27 CN CN201480033019.4A patent/CN105283670B/en active Active
- 2014-03-27 EP EP14713387.0A patent/EP2992215B1/en active Active
- 2014-03-27 WO PCT/EP2014/000823 patent/WO2014177242A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0207430A3 (en) * | 1985-07-01 | 1988-08-03 | Easthorpe Investments Ltd. | Centrifugal pump |
| DE3622269A1 (en) * | 1986-07-03 | 1988-01-14 | Richard Halm | Canned motor pump |
| EP0287984A3 (en) * | 1987-04-22 | 1990-05-23 | Askoll S.P.A. | Improved centrifugal pump for electric household appliances such as washing machines, dishwashers and the like |
| EP0320060A2 (en) * | 1987-12-11 | 1989-06-14 | Philips Patentverwaltung GmbH | Pump device for low-viscosity liquids |
| EP0520303A2 (en) * | 1991-06-22 | 1992-12-30 | Grundfos A/S | Sliding-contact bearing with an elastic mantle for a centrifugal-pump motor |
| CN2315337Y (en) * | 1997-11-28 | 1999-04-21 | 江西有色地质机械厂 | Improved sand pump |
| EP1703135A2 (en) * | 2005-02-25 | 2006-09-20 | Wilo Ag | Can of a centrifugal motor pump |
| DE202009008204U1 (en) * | 2009-06-09 | 2009-08-27 | Hanning Elektro-Werke Gmbh & Co. Kg | Canned motor for centrifugal pumps |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013007624A1 (en) | 2014-11-06 |
| CN105283670A (en) | 2016-01-27 |
| EP2992215A1 (en) | 2016-03-09 |
| WO2014177242A1 (en) | 2014-11-06 |
| EP2992215B1 (en) | 2017-09-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |