CN106870385A - A kind of magnetic seals Centrifugal liquid pump - Google Patents
A kind of magnetic seals Centrifugal liquid pump Download PDFInfo
- Publication number
- CN106870385A CN106870385A CN201710175730.9A CN201710175730A CN106870385A CN 106870385 A CN106870385 A CN 106870385A CN 201710175730 A CN201710175730 A CN 201710175730A CN 106870385 A CN106870385 A CN 106870385A
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- Prior art keywords
- ring
- seal
- sealing
- pump
- filter
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- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 239000011159 matrix material Substances 0.000 claims abstract description 46
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 238000012856 packing Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
- F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- 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
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of magnetic seals Centrifugal liquid pump,Sealing includes the seal box being connected with pump case,Seal box gland,By the primary seal of pump case side,Secondary sealing on rear side of primary seal,Secondary sealing is mechanical seal,Primary seal is formed by stacking by several lip-type packings,Lip-type packing is the sealing ring with filter,Primary seal,Seal box and secondary sealing three constitute net sap cavity,Sealing ring with filter includes ring-shaped rubber matrix,It is embedded in the web frame in rubber matrix,Rubber matrix inner ring is provided with seal lip,Filter house is provided between rubber matrix and seal lip,Filter house includes being filled with the accommodating chamber of filter body and makes the run-through channel of accommodating chamber and the insertion of rubber matrix outflow side,Slurry enters accommodating chamber and is filtered through filter body from inflow side,Net liquid after filtering exits into outflow side from run-through channel,Secondary sealing is mechanical seal,Including dynamic,Stationary ring,The closely sealed mode of rotating ring and stationary ring operative end surface is closely sealed using magnetic-adsorption.
Description
Technical field
The present invention relates to a kind of magnetic sealing Centrifugal liquid pump, belong to machinery industry.
Background technology
In existing Centrifugal liquid pump manufacturing technology, conventional is sealed with packing seal, the sealing of rubber lip circle, machine
Tool sealing etc..At home and abroad many decades are continued to use in market for a long time for these sealings, to not yet there is more advanced centrifugal slurry at present
Pump seal may replace.The sealing of original technology generally uses the life-span 2 ~ 6 months, i.e., to safeguard or change.Sealing produces damage
Bad main cause is：Sealing in one form or another, the component at sealing can all touch the slurry in pump chamber, slurry
In solid particulate matter and then bad seals can be made in the slot of embedding sealing component.Especially advanced magnetic in modern technologies
Power mechanical seal, cannot more be applied to the centrifugal pump of conveying slurry up, seal assembly contact slurry be equally existed, by slurry
In the bad deficiency of abrasion of particles.
Therefore existing Centrifugal liquid pump make, using technology in, either moulding mixture stock pump is inhaled in preceding suction type or side, all
Above-mentioned deficiency is there is, improvement innovation is still needed to.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided one kind uses magnetic mechanical seal, good seal performance, uses the longevity
Life Centrifugal liquid pump long and again economic.
To realize the object of the invention, there is provided following technical scheme：A kind of magnetic seals Centrifugal liquid pump, the slurry
Pump be preceding suction, including front opening pump cover and pump cover connection pump case and pump case connection bearing block, in pump case
Impeller and impeller connection live spindle, live spindle stretch out pump case connection bearing block, live spindle sets with the contact position of pump case
Be equipped with sealing, sealing include the seal box being connected with pump case, seal box gland, the primary seal by pump case side, after primary seal
The secondary sealing of side, secondary sealing is mechanical seal, it is characterised in that primary seal is formed by stacking by several lip-type packings, and lip is close
Seal is the sealing ring with filter, and primary seal, seal box and secondary sealing three constitute net sap cavity, with the close of filter
Seal includes ring-shaped rubber matrix, the web frame being embedded in rubber matrix, and rubber matrix inner ring is provided with seal lip, rubber
Matrix body side is inflow side, and opposite side is outflow side, and filter house is provided between rubber matrix and seal lip, and filter house includes
Accommodating chamber filled with filter body and make the run-through channel of accommodating chamber and the insertion of rubber matrix outflow side, slurry enters from inflow side
Accommodating chamber is filtered through filter body, and the net liquid after filtering exits into outflow side from run-through channel, and secondary sealing is mechanical seal, including
The closely sealed mode of dynamic and static ring, rotating ring and stationary ring operative end surface is closely sealed using magnetic-adsorption.
Preferably, rotating ring includes the rotating ring on rotating seat, rotating seat, the inner seal ring on rotating seat；Stationary ring includes quiet
Ring seat, the stationary ring on stationary seat, the exterior seal ring on stationary seat, the rotating ring, stationary ring for can magnetic material, be provided with stationary ring
Permanent magnet, rotating ring is closely sealed with the operative end surface of stationary ring.
Preferably, accommodating chamber is the annular groove being opened on rubber matrix, run-through channel is to be opened in annular groove bottom
Several through holes in portion.
Preferably, accommodating chamber is to set up several projections between rubber matrix and seal lip, offered on projection
Groove, filter body is filled in groove, and run-through channel is the through hole for being opened in bottom portion of groove.
Preferably, filter body includes porous ceramics, porous plastics, the filter cloth of overlapping or the thin filler of material.
Preferably, being provided with back blade on impeller.
Preferably, seal box offers intake-outlet joint.
Preferably, setting wind wheel on main shaft on rear side of secondary sealing.
To realize the object of the invention, there is provided another technical scheme：A kind of magnetic seals Centrifugal liquid pump, the material
Stock pump is side-suction type, including forward end seal the connection of pump cover and pump cover pump case and pump case connection bearing block, positioned at pump case
Interior impeller and impeller connection live spindle, live spindle stretch out the contact position of pump case connection bearing block, live spindle and pump case
It is provided with sealing, sealing includes and seal box, seal box gland, the primary seal by pump case side, secondary close on rear side of primary seal
Envelope, secondary sealing is mechanical seal, and pump case connection suction inlet threeway, axle sleeve is sheathed in live spindle, it is characterised in that primary seal
It is formed by stacking by several lip-type packings, lip-type packing is the sealing ring with filter, primary seal, seal box and pair
Sealing three constituted net sap cavity, and the sealing ring with filter includes ring-shaped rubber matrix, is embedded in adding in rubber matrix
Strong skeleton, rubber matrix inner ring is provided with seal lip, and rubber matrix side is inflow side, and opposite side is outflow side, rubber-based
Filter house is provided between body and seal lip, filter house includes being filled with the accommodating chamber of filter body and makes accommodating chamber and rubber-based
The run-through channel of body outflow side insertion, slurry enters accommodating chamber and is filtered through filter body from inflow side, and net liquid after filtering is from run-through channel
Exit into outflow side, secondary sealing is mechanical seal, including dynamic and static ring, the closely sealed mode of rotating ring and stationary ring operative end surface is used
Magnetic-adsorption is closely sealed.
Preferably, rotating ring includes the rotating ring on rotating seat, rotating seat, the inner seal ring on rotating seat；Stationary ring includes quiet
Ring seat, the stationary ring on stationary seat, the exterior seal ring on stationary seat, the rotating ring, stationary ring for can magnetic material, be provided with stationary ring
Permanent magnet, rotating ring is closely sealed with the operative end surface of stationary ring.
Preferably, accommodating chamber is the annular groove being opened on rubber matrix, run-through channel is to be opened in annular groove bottom
Several through holes in portion.
Beneficial effect of the present invention：The sealing of Centrifugal liquid pump of the invention, simple structure, scientific in principle, service life
Long, good seal performance, can increase substantially the performance of Centrifugal liquid pump, especially sealing performance.The Centrifugal liquid pump
Sealing structure is simple, science, low manufacture cost, can be client's saving purchase cost, working service cost, have fabulous society
Economic benefit.As a result of magnetic mechanical seal, because of its volume very little, changed on various pump that can be in original art
Make, improve, it is not necessary to external form, installation dimension to pump, structural change, so that it may reach improvement purpose, therefore have very extensive suitable
The property used.
Brief description of the drawings
Fig. 1 is the structure diagram of embodiment 1.
Fig. 2 is the partial enlarged drawing in A portions in Fig. 1.
Fig. 3 is the structure diagram of the secondary sealing in Fig. 1.
Fig. 4 is the structure diagram of the rubber lip circle of primary seal.
Fig. 5 is the structure diagram of pump of the embodiment 2 with accessory impeller.
Fig. 6 is structure diagram of the suction inlet of embodiment 3 in the pump at axle side seal position.
Specific embodiment
Embodiment 1：A kind of magnetic seals Centrifugal liquid pump, and the shurry pump is preceding suction, including front opening pump
Bearing block 3, the impeller 4 in pump case 2 and the connection rotation of impeller 4 that lid 1 and the pump case 2 and pump case 2 of the connection of pump cover 1 are connected
Turn main shaft 5, live spindle 5 and stretch out the connection bearing block 3 of pump case 2, live spindle 5 is provided with sealing, axle with the contact position of pump case 2
Sealing include the seal box 6.1 that be connected with pump case 2, seal box gland 6.2, the primary seal 7 by the side of pump case 2, on rear side of primary seal 7
Secondary sealing 8, secondary sealing 8 is mechanical seal, and primary seal 7 is formed by stacking by 2 lip-type packings 7.1, and lip-type packing 7.1 is band
The sealing ring of filter, primary seal 7, seal box 6.1 and the three of secondary sealing 8 constitute net sap cavity 9, the sealing with filter
Circle includes ring-shaped rubber matrix 7.1.1, the web frame 7.1.2 being embedded in rubber matrix 7.1.1, in rubber matrix 7.1.1
Circle is provided with seal lip 7.1.3, and rubber matrix 7.1.1 sides are inflow side, and opposite side is outflow side, rubber matrix 7.1.1
Be provided with filter house between seal lip 7.1.3, filter house include accommodating chamber filled with filter body 10 and make accommodating chamber with
The run-through channel of rubber matrix 7.1.1 outflow side insertions, slurry is filtered into accommodating chamber from inflow side through filter body 10, after filtering
Net liquid exits into outflow side from run-through channel, and secondary sealing 8 is mechanical seal, including dynamic and static ring（8.1、8.2）, rotating ring 8.1 includes
Rotating ring friction pair 8.1.2 on rotating seat 8.1.1, rotating seat 8.1.1, the inner seal ring 8.1.3 on rotating seat 8.1.1；Stationary ring
8.2 include stationary seat 8.2.1, the stationary ring friction pair 8.2.2 on stationary seat 8.2.1, the exterior seal ring on stationary seat 8.2.1
8.2.3, the rotating ring, stationary ring（8.1、8.2）For can magnetic material, permanent magnet 11 is provided with stationary ring 8.2, by rotating ring 8.1 with
The operative end surface of stationary ring 8.2 is closely sealed.Accommodating chamber is the annular groove 7.1.4 being opened on rubber matrix 7.1.1, and run-through channel is to open
Located at several through holes 7.1.5 of annular groove 7.1.4 bottoms.Filter body 10 includes porous ceramics, porous plastics, the filter of overlapping
Cloth or the thin filler of material.
Embodiment 2：With reference to embodiment 1, wind wheel 12 is set on the main shaft of the rear side of secondary sealing 8.In order to adapt to centrifugal slurry
Pump can convey higher temperature（More than 80 DEG C）Slurries, prevent sealing position temperature too high and to the infringement of seal assembly.
Embodiment 3：A kind of magnetic seals Centrifugal liquid pump, and the shurry pump is side-suction type, including forward end seal pump
Bearing block 3, the impeller 4 in pump case 2 and the connection rotation of impeller 4 that lid 1 and the pump case 2 and pump case 2 of the connection of pump cover 1 are connected
Turn main shaft 5, live spindle 5 and stretch out the connection bearing block 3 of pump case 2, live spindle 5 is provided with sealing, axle with the contact position of pump case 2
Sealing includes and seal box 6.1, seal box gland 6.2, the primary seal 7 by the side of pump case 2, the secondary sealing 8 of the rear side of primary seal 7, pair
Sealing 8 is mechanical seal, and pump case 2 connects suction inlet threeway 13, and axle sleeve 14 is sheathed in live spindle 5, and primary seal 7 is by 2 lips
Shape sealing ring 7.1 is formed by stacking, and lip-type packing 7.1 is the sealing ring with filter, primary seal 7, seal box 6.1 and pair
Seal 8 threes and constituted net sap cavity, the sealing ring with filter includes ring-shaped rubber matrix 7.1.1, is embedded in rubber matrix
7.1.1 interior web frame 7.1.2, rubber matrix 7.1.1 inner rings are provided with seal lip 7.1.3, rubber matrix 7.1.1 sides
It is inflow side, opposite side is outflow side, and filter house is provided between rubber matrix 7.1.1 and seal lip 7.1.3, and filter house includes
Accommodating chamber filled with filter body 10 and make the run-through channel of accommodating chamber and rubber matrix 7.1.1 outflow side insertions, slurry is from stream
Enter side to be filtered through filter body 10 into accommodating chamber, the net liquid after filtering exits into outflow side from run-through channel, secondary sealing 8 is machinery
Sealing, including dynamic and static ring（8.1、8.2）, rotating ring 8.1 include rotating seat 8.1.1, rotating seat 8.1.1 on rotating ring friction pair
8.1.2, the inner seal ring 8.1.3 on rotating seat 8.1.1；Stationary ring 8.2 includes stationary seat 8.2.1, the stationary ring on stationary seat 8.2.1
Friction pair 8.2.2, the exterior seal ring 8.2.3 on stationary seat 8.2.1, the rotating ring, stationary ring（8.1、8.2）For can magnetic material,
Permanent magnet 11 is provided with stationary ring 8.2, rotating ring 8.1 is closely sealed with the operative end surface of stationary ring 8.2.Accommodating chamber is to be opened in rubber-based
Annular groove 7.1.4 on body 7.1.1, run-through channel is several through holes 7.1.5 for being opened in annular groove 7.1.4 bottoms.Filter
Core body 10 includes porous ceramics, porous plastics, the filter cloth of overlapping or the thin filler of material.
The present embodiment is located at the suction inlet of Centrifugal liquid pump the sealing position of axle side, it is therefore an objective to allow suction inlet to be located at axle
Sealing position, allows the position of sealing to be always positioned at the fluid of Pump Suction Nozzle in negative pressuren zone, so improves the safety of sealing
Property, back blade decompression should not be also set on impeller, therefore power consumption is also saved, there is good energy-conserving action.
In above-described embodiment 1,2 or 3, accommodating chamber can be that to set up several between rubber matrix and seal lip convex
Block, opens up fluted on projection, filter body is filled in groove, and run-through channel is the through hole for being opened in bottom portion of groove.Primary seal
Lip rubber seal circle can be one or many overlapping.
The permanent magnet can be permanent magnet magnet steel or composite magnetic.
The operation principle of the dynamic and static ring of the mechanical seal of described secondary sealing, structure, with conventional mechanical seal without essence
Property difference, can be with as long as sealing liquid can be played.
The rotating ring of the mechanical seal of described secondary sealing, the material of stationary ring can be that ceramics, graphite, metal alloy etc. are commonly used
Encapsulant.
For the sealing effectiveness of elevating mechanism sealing, preferable method is rotating ring to be arranged on the inner side of stationary ring.
Install for convenience, the interior outside of the machine envelope with magnetic attraction is equipped with " O " type sealing ring.
In order to ensure that magnetic mechanical seal has longer service life, preferable method is by setting back blade
4.1 or accessory impeller 14, to the fluid pressure of sealing position, the pressure for making the Fluid pressure of sealing position control in 0 ~ 0.05MPa
Between, the service life that can seal machine is longer.
In order to lift sealing life during Centrifugal liquid pump conveying high concentration slurries, effective method is on seal box
Add intake-outlet joint（6.1.1、6.1.2）, periodically filtering sealing ring is backwashed.
Claims (10)
1. a kind of magnetic sealing Centrifugal liquid pump, the shurry pump is preceding suction, including the pump cover and pump cover of front opening connect
Bearing block, the impeller in pump case and impeller connection live spindle, the live spindle that the pump case and pump case for connecing are connected are stretched out
Pump case connects bearing block, and live spindle is provided with sealing with the contact position of pump case, and sealing includes the sealing being connected with pump case
Box, seal box gland, the primary seal by pump case side, the secondary sealing on rear side of primary seal, secondary sealing is mechanical seal, it is characterised in that
Primary seal is formed by stacking by several lip-type packings, and lip-type packing is the sealing ring with filter, primary seal, seal box
And secondary sealing three constitutes net sap cavity, the sealing ring with filter includes ring-shaped rubber matrix, is embedded in rubber matrix
Web frame, rubber matrix inner ring is provided with seal lip, and rubber matrix side is inflow side, and opposite side is outflow side, rubber
Filter house is provided between matrix body and seal lip, filter house includes being filled with the accommodating chamber of filter body and makes accommodating chamber and rubber
The run-through channel of matrix body outflow side insertion, slurry enters accommodating chamber and is filtered through filter body from inflow side, and net liquid after filtering is from passing through
Passage exits into outflow side, and secondary sealing is mechanical seal, including dynamic and static ring, the closely sealed mode of rotating ring and stationary ring operative end surface
It is closely sealed using magnetic-adsorption.
2. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that rotating ring includes rotating seat, moves
Rotating ring in ring seat, the inner seal ring on rotating seat；Stationary ring includes stationary seat, and the stationary ring on stationary seat is outer close on stationary seat
Seal, the rotating ring, stationary ring for can magnetic material, permanent magnet is provided with stationary ring, rotating ring is closely sealed with the operative end surface of stationary ring.
3. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that accommodating chamber is to be opened in rubber
Annular groove on matrix body, run-through channel is several through holes for being opened in annular groove bottom.
4. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that accommodating chamber is to set up in rubber
Several projections between matrix body and seal lip, open up fluted on projection, filter body is filled in groove, and run-through channel is to open
Located at the through hole of bottom portion of groove.
5. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that filter body includes porous pottery
Porcelain, porous plastics, the filter cloth of overlapping or the thin filler of material.
6. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that notopodium is provided with impeller
Piece.
7. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that seal box offers turnover
Water outlet connector.
8. a kind of magnetic according to claim 1 seals Centrifugal liquid pump, it is characterised in that the main shaft on rear side of secondary sealing
Upper setting wind wheel.
9. a kind of magnetic sealing Centrifugal liquid pump, the shurry pump is side-suction type, including the pump cover and pump cover of forward end seal connect
Bearing block, the impeller in pump case and impeller connection live spindle, the live spindle that the pump case and pump case for connecing are connected are stretched out
Pump case connects bearing block, and live spindle is provided with sealing with the contact position of pump case, and sealing includes and seal box, seal box pressure
Lid, the primary seal by pump case side, the secondary sealing on rear side of primary seal, secondary sealing are mechanical seal, pump case connection suction inlet threeway, axle
It is sheathed in live spindle, it is characterised in that primary seal is formed by stacking by several lip-type packings, lip-type packing is band
The sealing ring of filter, primary seal, seal box and secondary sealing three constituted net sap cavity, the sealing ring bag with filter
Ring-shaped rubber matrix, the web frame being embedded in rubber matrix are included, rubber matrix inner ring is provided with seal lip, rubber matrix
Side is inflow side, and opposite side is outflow side, and filter house is provided between rubber matrix and seal lip, and filter house includes being filled with
The accommodating chamber of filter body and the run-through channel of accommodating chamber and the insertion of rubber matrix outflow side, slurry is set to enter accommodating chamber from inflow side
Filtered through filter body, net liquid after filtering exits into outflow side from run-through channel, secondary sealing is mechanical seal, including dynamic and static ring,
The closely sealed mode of rotating ring and stationary ring operative end surface is closely sealed using magnetic-adsorption.
10. a kind of magnetic sealing Centrifugal liquid pump according to claim 9, it is characterised in that rotating ring include rotating seat,
Rotating ring on rotating seat, the inner seal ring on rotating seat；Stationary ring includes stationary seat, and the stationary ring on stationary seat is outer on stationary seat
Sealing ring, the rotating ring, stationary ring for can magnetic material, permanent magnet is provided with stationary ring, rotating ring is close with the operative end surface of stationary ring
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175730.9A CN106870385A (en) | 2017-03-22 | 2017-03-22 | A kind of magnetic seals Centrifugal liquid pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175730.9A CN106870385A (en) | 2017-03-22 | 2017-03-22 | A kind of magnetic seals Centrifugal liquid pump |
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| Publication Number | Publication Date |
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| CN106870385A true CN106870385A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710175730.9A Pending CN106870385A (en) | 2017-03-22 | 2017-03-22 | A kind of magnetic seals Centrifugal liquid pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328800A1 (en) * | 1986-07-28 | 1989-08-23 | Joseph Reginald Dunford | Filter assembly |
| JPH07109995A (en) * | 1993-10-13 | 1995-04-25 | Kubota Corp | Shaft seal device for vertical shaft pump |
| CN101392835A (en) * | 2007-09-18 | 2009-03-25 | 刘讯岐 | Opposition U-shaped surface magnetic mechanical seal |
| CN102996812A (en) * | 2012-11-21 | 2013-03-27 | 哈尔滨东安发动机（集团）有限公司 | Magnetic sealing device |
| CN105605226A (en) * | 2016-03-28 | 2016-05-25 | 安徽力诺环保工程有限公司 | Sealing device capable of preventing silt |
| CN106402014A (en) * | 2016-10-24 | 2017-02-15 | 宜兴市宙斯泵业有限公司 | Side-suction anti-abrasion centrifugal pump |
| CN206600276U (en) * | 2017-03-22 | 2017-10-31 | 宜兴市宙斯泵业有限公司 | A kind of magnetic seals Centrifugal liquid pump |
-
2017
- 2017-03-22 CN CN201710175730.9A patent/CN106870385A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328800A1 (en) * | 1986-07-28 | 1989-08-23 | Joseph Reginald Dunford | Filter assembly |
| JPH07109995A (en) * | 1993-10-13 | 1995-04-25 | Kubota Corp | Shaft seal device for vertical shaft pump |
| CN101392835A (en) * | 2007-09-18 | 2009-03-25 | 刘讯岐 | Opposition U-shaped surface magnetic mechanical seal |
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Application publication date: 20170620 |