CN206600276U - A kind of magnetic seals Centrifugal liquid pump - Google Patents
A kind of magnetic seals Centrifugal liquid pump Download PDFInfo
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- CN206600276U CN206600276U CN201720284713.4U CN201720284713U CN206600276U CN 206600276 U CN206600276 U CN 206600276U CN 201720284713 U CN201720284713 U CN 201720284713U CN 206600276 U CN206600276 U CN 206600276U
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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 the accommodating chamber filled with filter body and makes the run-through channel of accommodating chamber and the insertion of rubber matrix outflow side, slurry is filtered from inflow side into accommodating chamber through filter body, 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 utility model is related to a kind of magnetic sealing Centrifugal liquid pump, belongs 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 general service life of sealing of original technology 2 ~ 6 months, i.e., will safeguard or change.Sealing produces damage
Bad main cause is：Component at sealing in one form or another, 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.Advanced magnetic especially in modern technologies
Power mechanical seal, the centrifugal pump that can not be more applied to conveying slurry up, equally exists seal assembly contact slurry, by slurry
In the bad deficiency of abrasion of particles.
Therefore existing Centrifugal liquid pump makes, using in technology, and 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.
Utility model content
The utility model uses magnetic mechanical seal there is provided one kind in view of the shortcomings of the prior art, good seal performance, makes
With long lifespan and again economic Centrifugal liquid pump.
To realize the utility model purpose, there is provided following technical scheme：A kind of magnetic seals Centrifugal liquid pump, described
Shurry pump be preceding suction, including front opening pump cover, be connected with pump cover pump case, be connected with pump case bearing block, positioned at pump
Impeller in shell, it is connected live spindle, live spindle with impeller and stretches out pump case connection bearing block, contact of the live spindle with pump case
Place is provided with sealing, and sealing is close including the seal box being connected with pump case, seal box gland, the primary seal by pump case side, master
It is honored as a queen 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, lip
Shape sealing ring is the sealing ring with filter, and primary seal, seal box and secondary sealing three constitute net sap cavity, band filter
Sealing ring include ring-shaped rubber matrix, the web frame that is embedded in rubber matrix, rubber matrix inner ring is provided with sealing lip
Mouthful, rubber matrix side is inflow side, and opposite side is outflow side, and filter house is provided between rubber matrix and seal lip, filtering
Portion includes the accommodating chamber filled with filter body and makes the run-through channel of accommodating chamber and the insertion of rubber matrix outflow side, and slurry is from inflow
Side is filtered into accommodating chamber through filter body, and the net liquid after filtering exits into outflow side from run-through channel, and 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.
Preferably, rotating ring includes the inner seal ring on the rotating ring on rotating seat, rotating seat, rotating seat；Stationary ring includes quiet
Exterior seal ring on stationary ring on ring seat, stationary seat, stationary seat, the rotating ring, stationary ring for can magnetic material, be provided with stationary ring
Permanent magnet, the operative end surface of rotating ring and stationary ring is closely sealed.
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 several projections set up 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 the filler of porous ceramics, porous plastics, the filter cloth of overlapping or thin 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 utility model purpose, there is provided another technical scheme：A kind of magnetic seals Centrifugal liquid pump, institute
Shurry pump is stated for side-suction type, including forward end seal pump cover, be connected with pump cover pump case, be connected with pump case bearing block, be located at
Impeller in pump case, it is connected with impeller live spindle, live spindle and stretches out pump case connection bearing block, live spindle and pump case connects
Synapsis is provided with sealing, sealing include with rear side of seal box, seal box gland, the primary seal by pump case side, primary seal
Secondary sealing, secondary sealing is mechanical seal, and pump case connection suction inlet threeway, axle sleeve is sheathed in live spindle, it is characterised in that main
Sealing be formed by stacking by several lip-type packings, lip-type packing be the sealing ring with filter, primary seal, seal box with
And secondary sealing three constituted 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 the accommodating chamber filled with filter body and makes accommodating chamber and rubber
The run-through channel of matrix body outflow side insertion, slurry is filtered from inflow side into accommodating chamber through filter body, and the 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.
Preferably, rotating ring includes the inner seal ring on the rotating ring on rotating seat, rotating seat, rotating seat；Stationary ring includes quiet
Exterior seal ring on stationary ring on ring seat, stationary seat, stationary seat, the rotating ring, stationary ring for can magnetic material, be provided with stationary ring
Permanent magnet, the operative end surface of rotating ring and stationary ring is closely sealed.
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.
The utility model beneficial effect：The sealing of Centrifugal liquid pump of the present utility model, simple in construction, scientific in principle,
Service life length, good seal performance, can increase substantially the performance of Centrifugal liquid pump, especially sealing performance.The centrifugation
The sealing structure of formula shurry pump is simple, science, low manufacture cost, can save purchase cost, working service cost for client, there is pole
Good economic results in society.As a result of magnetic mechanical seal, because of its volume very little, various pump that can be in original art
It is upper to be transformed, improved, it is not necessary to the external form, installation dimension, structural change of pump, so that it may reach improvement purpose, therefore have very
Wide applicability.
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 be Fig. 1 in secondary sealing structure diagram.
The structure diagram of sealed rubber lip circle based on Fig. 4.
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.
Embodiment
Embodiment 1：A kind of magnetic seals Centrifugal liquid pump, and the shurry pump is preceding suction, includes the pump of front opening
Lid 1, the pump case 2 being connected with pump cover 1, the bearing block 3 being connected with pump case 2, the impeller 4 in pump case 2, with impeller 4 it is connected rotation
Turn main shaft 5, live spindle 5 and stretch out the connection bearing block 3 of pump case 2, live spindle 5 and the contact position of pump case 2 are provided with sealing, axle
Seal on rear side of including the seal box 6.1 being connected with pump case 2, seal box gland 6.2, the primary seal 7 by the side of pump case 2, 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 is included in ring-shaped rubber matrix 7.1.1, the web frame 7.1.2 being embedded in rubber matrix 7.1.1, 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 the 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 from inflow side into accommodating chamber 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
The inner seal ring 8.1.3 on rotating ring friction pair 8.1.2, rotating seat 8.1.1 on rotating seat 8.1.1, rotating seat 8.1.1；Stationary ring
8.2 include the exterior seal ring on stationary ring friction pair 8.2.2, stationary seat 8.2.1 on stationary seat 8.2.1, stationary seat 8.2.1
8.2.3, the rotating ring, stationary ring（8.1、8.2）For can magnetic material, be provided with permanent magnet 11 on 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
Several through holes 7.1.5 located at annular groove 7.1.4 bottoms.Filter body 10 includes porous ceramics, porous plastics, the filter of overlapping
The filler of cloth or thin 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, includes the pump of forward end seal
Lid 1, the pump case 2 being connected with pump cover 1, the bearing block 3 being connected with pump case 2, the impeller 4 in pump case 2, with impeller 4 it is connected rotation
Turn main shaft 5, live spindle 5 and stretch out the connection bearing block 3 of pump case 2, live spindle 5 and the contact position of pump case 2 are provided with sealing, axle
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
For inflow side, opposite side is outflow side, filter house is provided between rubber matrix 7.1.1 and seal lip 7.1.3, 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 filter 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 the stationary ring on stationary seat 8.2.1, stationary seat 8.2.1
Exterior seal ring 8.2.3 on friction pair 8.2.2, 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, the operative end surface of rotating ring 8.1 and stationary ring 8.2 is closely sealed.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 the filler of porous ceramics, porous plastics, the filter cloth of overlapping or thin 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 fluid that the position of sealing is always positioned at 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 set up between rubber matrix and seal lip several are convex
Open up fluted on block, projection, filter body is filled in groove, 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.
Operation principle, the structure of the dynamic and static ring of the mechanical seal of described secondary sealing, 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 sealed sealing effectiveness of elevating mechanism, 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 Fluid pressure of sealing position is controlled pressure 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 seals Centrifugal liquid pump, the shurry pump is preceding suction, includes pump cover and the pump cover company of front opening
The pump case connect, the bearing block being connected with pump case, the impeller in pump case, it is connected with impeller live spindle, live spindle and stretches out
The contact position of pump case connection bearing block, live spindle and pump case is provided with sealing, 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 the accommodating chamber filled with filter body and makes accommodating chamber and rubber
The run-through channel of matrix body outflow side insertion, slurry is filtered from inflow side into accommodating chamber through filter body, and the 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 sealing Centrifugal liquid pump according to claim 1, it is characterised in that rotating ring includes rotating seat, moved
Inner seal ring on rotating ring in ring seat, rotating seat；Stationary ring includes outer close on the stationary ring on stationary seat, stationary seat, stationary seat
Seal, the rotating ring, stationary ring for can magnetic material, be provided with permanent magnet on stationary ring, the operative end surface of rotating ring and stationary ring is closely sealed.
3. a kind of magnetic sealing Centrifugal liquid pump according to claim 1, 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 sealing Centrifugal liquid pump according to claim 1, it is characterised in that accommodating chamber is to set up in rubber
Open up fluted on several projections between matrix body and seal lip, projection, filter body is filled in groove, run-through channel is to open
Located at the through hole of bottom portion of groove.
5. a kind of magnetic sealing Centrifugal liquid pump according to claim 1, it is characterised in that filter body includes porous pottery
Porcelain, porous plastics, the filter cloth of overlapping or the thin filler expected.
6. a kind of magnetic sealing Centrifugal liquid pump according to claim 1, it is characterised in that notopodium is provided with impeller
Piece.
7. a kind of magnetic sealing Centrifugal liquid pump according to claim 1, it is characterised in that seal box offers turnover
Water outlet connector.
8. a kind of magnetic sealing Centrifugal liquid pump according to claim 1, it is characterised in that the main shaft on rear side of secondary sealing
Upper setting wind wheel.
9. a kind of magnetic seals Centrifugal liquid pump, the shurry pump is side-suction type, includes pump cover and the pump cover company of forward end seal
The pump case connect, the bearing block being connected with pump case, the impeller in pump case, it is connected with impeller live spindle, live spindle and stretches out
The contact position of pump case connection bearing block, live spindle and pump case is provided with sealing, 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 for making accommodating chamber and the insertion of rubber matrix outflow side, slurry enter accommodating chamber from inflow side
Filtered through filter body, the 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,
Inner seal ring on rotating ring on rotating seat, rotating seat；Stationary ring includes outer on the stationary ring on stationary seat, stationary seat, stationary seat
Sealing ring, the rotating ring, stationary ring for can magnetic material, be provided with permanent magnet on stationary ring, the operative end surface of rotating ring and stationary ring is close
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284713.4U CN206600276U (en) | 2017-03-22 | 2017-03-22 | A kind of magnetic seals Centrifugal liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284713.4U CN206600276U (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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| CN206600276U true CN206600276U (en) | 2017-10-31 |
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ID=60145130
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720284713.4U Active CN206600276U (en) | 2017-03-22 | 2017-03-22 | A kind of magnetic seals Centrifugal liquid pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870385A (en) * | 2017-03-22 | 2017-06-20 | 宜兴市宙斯泵业有限公司 | A kind of magnetic seals Centrifugal liquid pump |
| CN107956735A (en) * | 2017-12-05 | 2018-04-24 | 浙江丰源泵业有限公司 | A kind of pump sealing structure |
-
2017
- 2017-03-22 CN CN201720284713.4U patent/CN206600276U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870385A (en) * | 2017-03-22 | 2017-06-20 | 宜兴市宙斯泵业有限公司 | A kind of magnetic seals Centrifugal liquid pump |
| CN107956735A (en) * | 2017-12-05 | 2018-04-24 | 浙江丰源泵业有限公司 | A kind of pump sealing structure |
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