CN203822650U - Dry milling resistant fluoroplastic magnetic drive pump - Google Patents
Dry milling resistant fluoroplastic magnetic drive pump Download PDFInfo
- Publication number
- CN203822650U CN203822650U CN201420179147.7U CN201420179147U CN203822650U CN 203822650 U CN203822650 U CN 203822650U CN 201420179147 U CN201420179147 U CN 201420179147U CN 203822650 U CN203822650 U CN 203822650U
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- ball
- thrust washer
- bearing
- silicon nitride
- impeller
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- 238000009837 dry grinding Methods 0.000 title claims abstract description 12
- 229920002313 fluoropolymer Polymers 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims description 59
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 48
- HQVNEWCFYHHQES-UHFFFAOYSA-N Silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 48
- 241000237858 Gastropoda Species 0.000 claims description 29
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 21
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 16
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 15
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000002708 enhancing Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 231100000614 Poison Toxicity 0.000 description 1
- 210000001138 Tears Anatomy 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- -1 chemical industry Substances 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model relates to a dry milling resistant fluoroplastic magnetic drive pump. A magnetic drive pump impeller 2 is mounted at the axial end of a pump shaft 7; an external worm body wall 1 and the impeller 2 are matched and mounted together via a first radial roller bearing 9 and a first axial ball bearing 8; an internal worm body wall 3 and the pump shaft 7 are matched and mounted via a second radial roller bearing 11; the second axial ball bearing is mounted between the impeller 2 and the second radial roller bearing 11 in a matching manner. The magnetic drive pump can reduce vibration and noise caused by poor dynamic balance of the impeller 2 so as to effectively prevent the axial movement of the pump shaft 7 and the impeller 2; the magnetic drive pump greatly reduces heat generated by friction, and can perform idle operation under the conditions of shortage of liquid conveyed by the pump and current breaking during a certain period of time, thereby enhancing the dry milling resistance and improving the operation safety.
Description
Technical field
The utility model relates to the fluoroplastic magnetic pump of a kind of magnetic drive pump, particularly a kind of anti-dry grinding.
Background technique
Magnetic drive pump is different from traditional canned pump, motor crankshaft is not directly connected with pump shaft, but motor crankshaft drives outer magnet rotor rotation, and outer magnet rotor coordinates with interior magnet rotor by magnetic force and drives interior magnet rotor to rotate, by interior magnet rotor, drive pump shaft to rotate, make the vane rotor rotation work on pump shaft.In magnetic drive pump, between magnet rotor and outer magnet rotor, be provided with the Seal cage that separation sleeve forms, pump shaft and interior magnet rotor are enclosed in Seal cage, one can avoid liquid by pump shaft end to outside seepage, two can carry out cooling to pump shaft and interior magnet rotor, therefore very excellent in leakage characteristics without take traditional dynamic seal (packing) just can obtain to pump shaft, thereby be widely used in carrying various severe toxicity, the danger medium such as inflammable, explosive, in fields such as oil, chemical industry, medicine, nuclear power, national defence, brought into play important function.Because the sliding bearing of magnetic drive pump inner support pump shaft is to utilize institute's course of conveying fluid to be lubricated, this process-liquid often lubricity is poor; Secondly in production environment, often can run in pump that liquid is evacuated or the situation such as liquid minimizing, can produce " no load running ", be commonly called as " dry grinding ", and " dry grinding " can make sliding bearing fast heating at short notice, and and pump shaft between wearing and tearing acceleration; In addition the solid being dispersed in working fluid, can produce potential bearing or the grinding of journal surface.The build-up effect of these times can cause bearing to wear and tear too early, and result causes pump shaft substantial deviation rotating center, and interior magnet rotor and separation sleeve rub, and separation sleeve is worn out and generation is high hot rapidly, cause dielectric leakage, the poisonous inflammable and explosive material diffusion that waits, even causes major disaster accident.
Impeller is because material is inhomogeneous, the accumulation of blank defect, machining error, assembly error etc., and when design the asymmetry geometrical shape that exists etc., make its non-uniform mass, form certain bias, when vane rotary, produce unbalanced centrifugal inertia force, thereby make pump produce vibration and noise, the bad expected service life that can reduction equipment of dynamic balancing, shows the earlier period damage of bearing especially, the maintenance period of shortening equipment, the maintenance cost of increase equipment, affects quality of product, aggravating working environment etc.
Summary of the invention
The problem that is difficult to overcome in order to solve above-mentioned prior art, the utility model provides a kind of fluoroplastic magnetic pump of anti-dry grinding, comprise pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, interior snail body wall 3, outer snail body wall 1, separation sleeve 4, the first radial roller bearing 9, the second radial roller bearing 11, the first axial ball bearing 8 and the second axial ball bearing 10, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle heads, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, separation sleeve 4 is fixedly connected with interior snail body wall 3 body seals, the material that separation sleeve 4 is selected is a kind of in zirconium oxide or ptfe composite, impeller 2 is arranged on pump shaft 7 axle heads, between outer snail body wall 1 and impeller 2, by the first radial roller bearing 9 and the first axial ball bearing 8, coordinate installation, between interior snail body wall 3 and pump shaft 7, by the second radial roller bearing 11, coordinate installation, between impeller 2 and the second radial roller bearing 11, coordinate the second axial ball bearing 10 to install, at pump shaft 7 and interior snail body wall 3, have guiding gutter, the magnetic drive pump of described structure can reduce due to the bad vibration causing of impeller 2 dynamic balancing and noise, and the axial float that can effectively stop pump shaft 7 and impeller 2, improve the security of operation of magnetic drive pump.
As further improvement of the utility model, the material that described pump shaft 7 is selected is a kind of in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride.
As further improvement of the utility model, the described first axial ball bearing 8 comprises annular retainer 14, ball 13, thrust washer 12, thrust washer 15, annular retainer 14 has a plurality of circular holes along even circumferential, ball 13 embeds in circular hole, and thrust washer 15 is installed in impeller 2 opening slot A, and thrust washer 12 and thrust washer 15 lay respectively at annular retainer 14 both sides, thrust washer 12 and thrust washer 15 are provided with ball grooves along circumference, and ball 13 embeds in ball grooves.
As further improvement of the utility model, described ball grooves groove depth and annular retainer 14 width sums are less than the diameter of ball 13, annular retainer 14 the selection of materials are a kind of in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 12 and thrust washer 15 the selection of materials are a kind of of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, and ball 13 the selection of materials are gas Pressure Sintered Silicon Nitride.
As further improvement of the utility model, the described second axial ball bearing 10 comprises annular retainer 18, ball 17, thrust washer 16, thrust washer 19, annular retainer 18 has a plurality of circular holes along even circumferential, ball 17 embeds in circular hole, thrust washer 16 and thrust washer 19 lay respectively at annular retainer 18 both sides, and thrust washer 16 and thrust washer 19 are provided with ball grooves along circumference, and ball 17 embeds in ball grooves.
As further improvement of the utility model, described ball grooves groove depth and annular retainer 18 width sums are less than the diameter of ball 17, annular retainer 18 the selection of materials are a kind of in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 16 and thrust washer 19 the selection of materials are a kind of of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, and ball 17 the selection of materials are gas Pressure Sintered Silicon Nitride.
As further improvement of the utility model, described the first radial roller bearing 9 comprises roller 27, slider 29, bearing inner race 26 and bearing outer ring 28, inner shield ring 25, outer back-up ring 24, thrust washer 31, thrust ball 30, between bearing inner race 26 and bearing outer ring 28, place roller 27, between roller 27, by slider 29, separate, inner shield ring 25 and outer back-up ring 24 lay respectively at roller 27 both sides, bearing outer ring 28 is greater than the ring width near outer snail body wall 1 side near the ring width of impeller 2 sides, in impeller 2 opening slot B, put into thrust washer 31, thrust washer 31 has a plurality of blind holes along even circumferential, in blind hole, put into thrust ball 30, thrust ball 30 diameters are greater than blind hole depth.
As further improvement of the utility model, described roller 27, thrust ball 30, the material that bearing inner race 26 and bearing outer ring 28 are selected is gas Pressure Sintered Silicon Nitride, slider 29, the material that thrust washer 31 is selected is a kind of in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, and the material that inner shield ring 25 and outer back-up ring 24 are selected is silicon nitride.
As further improvement of the utility model, described the second radial roller bearing 11 comprises roller 20, slider 23, back-up ring 22, bearing outer ring 21 is placed roller 20 between bearing outer ring 21 and pump shaft 7, between roller 20, by slider 23, separates, back-up ring 22 and thrust washer 19 lay respectively at roller 20 both sides, can prevent roller 20 and slider 23 axial float in the running.
As further improvement of the utility model, the material that described roller 20, bearing outer ring 21 are selected is gas Pressure Sintered Silicon Nitride, slider 23 the selection of materials are a kind of in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, and the material that back-up ring 22 is selected is silicon nitride.
The beneficial effects of the utility model are: this structure magnetic drive pump pump shaft 7, impeller 2 and outer snail body wall 1, between interior snail body wall 3, pass through the first radial roller bearing 9, the second radial roller bearing 11, the first axial ball bearing 8, the second axial ball bearing 10 coordinates to be installed, and can reduce the bad vibration causing of impeller 2 dynamic balancing and noise, effectively stops the axial float of pump shaft 7 and impeller 2, the first radial roller bearing 9 of being made by said structure and material, the second radial roller bearing 11, the magnetic drive pump that the first axial ball bearing 8 and the second axial ball bearing 10 support, greatly reduced surface friction drag, reduce the heat that friction generates, can be within a certain period of time in the situation that the disappearance of pumping liquid and cutout no load running, improved the anti-dry grinding performance of magnetic drive pump, increased magnetic drive pump safety in operation, pump shaft 7 in pump chamber, impeller 2, the first radial roller bearing 9, the second radial roller bearing 11, what the first axial ball bearing 8 and the second axial ball bearing 10 were selected is all resistant material, has improved the decay resistance of magnetic drive pump.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of the first axial ball bearing 8
Fig. 3 is the structural representation of the second axial ball bearing 10
Fig. 4 is the structural representation of the first radial roller bearing 9
Fig. 5 is the structural representation of the second radial roller bearing 11
Embodiment
Embodiment: a kind of fluoroplastic magnetic pump of anti-dry grinding, comprise pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, separation sleeve 4, interior snail body wall 3, outer snail body wall 1, the first radial roller bearing 9, the second radial roller bearing 11, the first axial ball bearing 8 and the second axial ball bearing 10, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle heads, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, the material that separation sleeve 4 is selected is a kind of in zirconium oxide or ptfe composite, separation sleeve 4 is fixedly connected with interior snail body wall 3 body seals, between outer snail body wall 1 and interior snail body wall 3, be fastenedly connected, outer snail body wall 1, interior snail body wall 3 and separation sleeve 4 sealings form pump chamber.During magnetic drive pump work, by external motivating force, drive outer magnet rotor 6 to rotate, in outer magnet rotor 6 and 5 cooperations of interior magnet rotor drive by magnetic force, magnet rotor 5 rotates, and interior magnet rotor 5 drives pump shaft 7 rotations, impeller 2 is arranged on pump shaft 7 axle heads, and impeller 2 is along with pump shaft 7 rotary work together.
Between the outer snail body wall 1 of described magnetic drive pump and impeller 2, by the first radial roller bearing 9 and the first axial ball bearing 8, coordinate installation, between interior snail body wall 3 and pump shaft 7, by the second radial roller bearing 11, coordinate installation, between impeller 2 and the second radial roller bearing 11, coordinate the second axial ball bearing 10 to install, this kind coordinates to be installed, can reduce vibration and the noise of the bad generation of impeller 2 dynamic balancing, the axial float that can effectively stop pump shaft 7 and impeller 2, the security of operation of raising magnetic drive pump.At pump shaft 7 and interior snail body wall 3, have guiding gutter, the highly pressurised liquid throwing away from impeller 2, guiding gutter on interior snail body wall 3 flows into, and inside and outside magnet coupler and pump shaft 7 is carried out cooling, by the guiding gutter on pump shaft 7, flows into impeller 2 entrance negative pressure districts.
The material that described pump shaft 7 is selected is a kind of in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride, and pump shaft 7 should be able to bear the loads such as moment of torsion, moment of flexure, and pump shaft 7 that described material is made is wear-resisting, corrosion resistant, heatproof, comprehensive mechanical performance are good.
The described first axial ball bearing 8 comprises annular retainer 14, ball 13, thrust washer 12, thrust washer 15, annular retainer 14 has a plurality of circular holes along even circumferential, ball 13 embeds in circular hole, thrust washer 15 is installed in impeller 2 opening slot A, thrust washer 12 and thrust washer 15 lay respectively at annular retainer 14 both sides, thrust washer 12 and thrust washer 15 are provided with ball grooves along circumference, and ball 13 embeds in ball grooves, are rolling friction between thrust washer 12 and thrust washer 15 and ball 13, surface friction drag is little, and the heat that friction generates is few.
Described ball grooves groove depth and annular retainer 14 width sums are less than the diameter of ball 13, annular retainer 14 the selection of materials are silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, thrust washer 12 and thrust washer 15 the selection of materials are silicon carbide, silicon nitride and air pressure silicon nitride sintered material a kind of, ball 13 the selection of materials are gas Pressure Sintered Silicon Nitride, the first axial ball bearing 8 corrosion resistants that described material is made, wear-resisting property is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
The described second axial ball bearing 10 comprises annular retainer 18, ball 17, thrust washer 16, thrust washer 19, annular retainer 18 has a plurality of circular holes along even circumferential, ball 17 embeds in circular hole, and thrust washer 16 and thrust washer 19 lay respectively at annular retainer 18 both sides, and thrust washer 16 and thrust washer 19 are provided with ball grooves along circumference, ball 17 embeds in ball grooves, between thrust washer 16 and thrust washer 19 and ball 17, be rolling friction, surface friction drag is little, and the heat that friction generates is few.
Described ball grooves groove depth and annular retainer 18 width sums are less than the diameter of ball 17, annular retainer 18 the selection of materials are silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, thrust washer 16 and thrust washer 19 the selection of materials are silicon carbide, silicon nitride and air pressure silicon nitride sintered material a kind of, ball 17 the selection of materials are gas Pressure Sintered Silicon Nitride, the second axial ball bearing 10 corrosion resistants that described material is made, wear-resisting property is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Described the first radial roller bearing 9 comprises roller 27, slider 29, bearing inner race 26 and bearing outer ring 28, inner shield ring 25, outer back-up ring 24, thrust washer 31, thrust ball 30, between bearing inner race 26 and bearing outer ring 28, place roller 27, between roller 27, by slider 29, separate, described slider 29 has been avoided the friction between roller 27, greatly reduced surface friction drag, reduce friction producing heat, extend the working life of radial roller bearing, can be within a certain period of time in the situation that the disappearance of pumping liquid and cutout no load running, the dense degree that roller 27 is placed can regulate according to load by slider 29, retainer structure compared with available technology adopting is more flexible, practical, inner shield ring 25 and outer back-up ring 24 lay respectively at roller 27 both sides, can prevent that roller 27 and slider 29 are at the axial float of magnetic drive pump run duration, bearing outer ring 28 is greater than the ring width near outer snail body wall 1 side near the ring width of impeller 2 sides, in the time of can preventing magnetic drive pump operation, there is axial float in bearing outer ring 28, rub with outer snail body wall 1, in impeller 2 opening slot B, put into thrust washer 31, thrust washer 31 has a plurality of blind holes along even circumferential, in blind hole, put into thrust ball 30, thrust ball 30 diameters are greater than blind hole depth, with the rolling friction between inner shield ring 25 and thrust ball 30, avoid inner shield ring 25 directly and impeller 2 generation sliding frictions.
As further improvement of the utility model, slider 29, the material that thrust washer 31 is selected is silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, the material wear-resistant of selecting, corrosion resistant, heatproof, comprehensive mechanical performance is good, the material that inner shield ring 25 and outer back-up ring 24 are selected is silicon nitride, the material corrosion resistant of selecting, wear-resisting property is good, described roller 27, thrust ball 30, the material that bearing inner race 26 and bearing outer ring 28 are selected is gas Pressure Sintered Silicon Nitride, the radial roller bearing of this kind of materials for support is corrosion-resistant, wear-resisting, heat resistance is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Described the second radial roller bearing 11 comprises roller 20, slider 23, back-up ring 22, bearing outer ring 21, between bearing outer ring 21 and pump shaft 7, place roller 20, between roller 20, by slider 23, separate, described slider 23 has been avoided the friction between roller 20, greatly reduced surface friction drag, reduce friction producing heat, can be within a certain period of time in the situation that the disappearance of pumping liquid and cutout no load running, strengthened the anti-dry grinding performance of magnetic drive pump, the dense degree that roller 20 is placed can regulate according to load by slider 23, retainer structure compared with available technology adopting is more flexible, practical, back-up ring 22 and thrust washer 19 lay respectively at roller 20 both sides, can prevent roller 20 and slider 23 axial float in the running.
As further improvement of the utility model, the material that described roller 20, bearing outer ring 21 are selected is gas Pressure Sintered Silicon Nitride, slider 23 the selection of materials are a kind of in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, the material that back-up ring 22 is selected is silicon nitride, the radial roller bearing that described material is made is wear-resisting, corrosion resistant performance good, the more important thing is that its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Above-described embodiment is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (6)
1. the fluoroplastic magnetic pump of an anti-dry grinding, comprise pump shaft (7), impeller (2), interior magnet rotor (5), outer magnet rotor (6), interior snail body wall (3), outer snail body wall (1), separation sleeve (4), the first radial roller bearing (9), the second radial roller bearing (11), the first axial ball bearing (8) and the second axial ball bearing (10), interior magnet rotor (5) is fixedly mounted on pump shaft (7) axle head, outer magnet rotor (6) is arranged on motor shaft end, between interior magnet rotor (5) and outer magnet rotor (6), separation sleeve (4) is set, separation sleeve (4) is fixedly connected with interior snail body wall (3) body seal, the material that separation sleeve (4) is selected is a kind of in zirconium oxide or ptfe composite, impeller (2) is arranged on pump shaft (7) axle head, between outer snail body wall (1) and impeller (2), by the first radial roller bearing (9) and the first axial ball bearing (8), coordinate installation, between interior snail body wall (3) and pump shaft (7), by the second radial roller bearing (11), coordinate installation, between impeller (2) and the second radial roller bearing (11), coordinate the second axial ball bearing (10) to install, at pump shaft (7) and interior snail body wall (3), have guiding gutter, the magnetic drive pump of described structure can reduce due to the bad vibration causing of impeller (2) dynamic balancing and noise, and the axial float that can effectively stop pump (7) and impeller (2), improve the security of operation of magnetic drive pump.
2. magnetic drive pump according to claim 1, is characterized in that: the material that described pump shaft (7) is selected is a kind of in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride.
3. magnetic drive pump according to claim 1, it is characterized in that: the described first axial ball bearing (8) comprises annular retainer (14), ball (13), thrust washer (12), thrust washer (15), annular retainer (14) has a plurality of circular holes along even circumferential, ball (13) embeds in circular hole, thrust washer (15) is installed in impeller (2) opening slot (A), thrust washer (12) and thrust washer (15) lay respectively at annular retainer (14) both sides, thrust washer (12) and thrust washer (15) are provided with ball grooves along circumference, ball (13) embeds in ball grooves, described ball grooves groove depth and annular retainer (14) width sum are less than the diameter of ball (13), annular retainer (14) the selection of material is silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, thrust washer (12) and thrust washer (15) the selection of material are silicon carbide, silicon nitride and air pressure silicon nitride sintered material a kind of, ball (13) the selection of material is gas Pressure Sintered Silicon Nitride.
4. magnetic drive pump according to claim 1, it is characterized in that: the described second axial ball bearing (10) comprises annular retainer (18), ball (17), thrust washer (16), thrust washer (19), annular retainer (18) has a plurality of circular holes along even circumferential, ball (17) embeds in circular hole, thrust washer (16) and thrust washer (19) lay respectively at annular retainer (18) both sides, thrust washer (16) and thrust washer (19) are provided with ball grooves along circumference, ball (17) embeds in ball grooves, described ball grooves groove depth and annular retainer (18) width sum are less than the diameter of ball (17), annular retainer (18) the selection of material is silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, thrust washer (16) and thrust washer (19) the selection of material are silicon carbide, silicon nitride and air pressure silicon nitride sintered material a kind of, ball (17) the selection of material is gas Pressure Sintered Silicon Nitride.
5. magnetic drive pump according to claim 1, it is characterized in that: described the first radial roller bearing (9) comprises roller (27), slider (29), bearing inner race (26) and bearing outer ring (28), inner shield ring (25), outer back-up ring (24), thrust washer (31), thrust ball (30), between bearing inner race (26) and bearing outer ring (28), place roller (27), between roller (27), by slider (29), separate, inner shield ring (25) and outer back-up ring (24) lay respectively at roller (27) both sides, can prevent roller (27) and slider (29) axial float in the running, bearing outer ring (28) is greater than the ring width near outer snail body wall (1) side near the ring width of impeller (2) side, in impeller (2) opening slot (B), put into thrust washer (31), thrust washer (31) has a plurality of blind holes along even circumferential, in blind hole, put into thrust ball (30), thrust ball (30) diameter is greater than blind hole depth, described roller (27), thrust ball (30), the material that bearing inner race (26) and bearing outer ring (28) are selected is gas Pressure Sintered Silicon Nitride, slider (29), the material that thrust washer (31) is selected is silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, the material that inner shield ring (25) and outer back-up ring (24) are selected is silicon nitride.
6. magnetic drive pump according to claim 1, it is characterized in that: described the second radial roller bearing (11) comprises roller (20), slider (23), back-up ring (22), bearing outer ring (21), between bearing outer ring (21) and pump shaft (7), place roller (20), between roller (20), by slider (23), separate, back-up ring (22) and thrust washer (19) lay respectively at roller (20) both sides, can prevent roller (20) and slider (23) axial float in the running, described roller (20), the material that bearing outer ring (21) is selected is gas Pressure Sintered Silicon Nitride, slider (23) the selection of material is silicon carbide, silicon nitride, a kind of in zirconium oxide and ptfe composite, the material that back-up ring (22) is selected is silicon nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179147.7U CN203822650U (en) | 2014-04-15 | 2014-04-15 | Dry milling resistant fluoroplastic magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179147.7U CN203822650U (en) | 2014-04-15 | 2014-04-15 | Dry milling resistant fluoroplastic magnetic drive pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822650U true CN203822650U (en) | 2014-09-10 |
Family
ID=51478159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179147.7U Active CN203822650U (en) | 2014-04-15 | 2014-04-15 | Dry milling resistant fluoroplastic magnetic drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822650U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286319A (en) * | 2015-05-28 | 2017-01-04 | 昆山江津长抗干磨磁力泵有限公司 | A kind of corrosion resistant centrifugal magnetic immersible pump |
| CN106351849A (en) * | 2015-07-13 | 2017-01-25 | 昆山江津长抗干磨磁力泵有限公司 | Magnetic pump with improved structure |
-
2014
- 2014-04-15 CN CN201420179147.7U patent/CN203822650U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286319A (en) * | 2015-05-28 | 2017-01-04 | 昆山江津长抗干磨磁力泵有限公司 | A kind of corrosion resistant centrifugal magnetic immersible pump |
| CN106351849A (en) * | 2015-07-13 | 2017-01-25 | 昆山江津长抗干磨磁力泵有限公司 | Magnetic pump with improved structure |
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