CN2906151Y - Energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump - Google Patents
Energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump Download PDFInfo
- Publication number
- CN2906151Y CN2906151Y CN 200620074411 CN200620074411U CN2906151Y CN 2906151 Y CN2906151 Y CN 2906151Y CN 200620074411 CN200620074411 CN 200620074411 CN 200620074411 U CN200620074411 U CN 200620074411U CN 2906151 Y CN2906151 Y CN 2906151Y
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- seal
- balance disc
- pump
- pump shaft
- sealing
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 91
- 230000003068 static effect Effects 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 82
- 229920002313 fluoropolymer Polymers 0.000 claims description 19
- 210000004907 gland Anatomy 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 17
- 238000004134 energy conservation Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 235000014121 butter Nutrition 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model is an energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump which relates to a multi-stage centrifugal pump. In the design scheme provided in the utility model, a bearing body, a sealing member, a balancing member and an outlet section are mounted on each other in an up-down sequence outside a pump shaft. The utility model is characterized in that a dynamic sealing balancing disk sleeve is mounted on the pump shaft and between the pump shaft and the outlet section, a dynamic sealing balancing disk is provided at the lower part of the outside of the dynamic sealing balancing disk sleeve, a static sealing balancing disk is provided at the upper part of the outside of the dynamic sealing balancing disk sleeve, and some springs of a static sealing balancing disk which is parallel with the pump shaft are evenly arranged along the circumferential direction and between the static sealing balancing disk and the balancing body. The utility model is an energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump, so the maintenance to the wearing parts is more convenient, thereby the service life of the wearing part, the working performance and the comprehensive efficiency can be effectively improved.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, the seal arrangement on specifically a kind of centrifugal pump.
Background technique
In the prior art, the vertical multistage centrifugal pump of just tearing open mainly adopts super-short mechanical seal, because mechanical seal is shorter working life, often replacing is pretty troublesome, and annual water pump operation cost is bigger simultaneously.Secondly, hydraulic thrust Balance disc in existing " the vertical multistage centrifugal pump of just tearing open ", can't artificial control enter what of the lubricated water yield in the hydraulic thrust Balance disc, also with regard to the degree of uncontrollable hydraulic thrust Balance disc balancing axial thrust, so desirable not enough to energy-conservation level.
Summary of the invention
The purpose of this utility model is to design a kind of vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump that is used for, the highly pressurised liquid that this Leakless device produces in the time of can sealing with the exclusion of water pump operation effectively, played the double action of the axial force of sealing of first road and ballast pump, compared with traditional DL pump and have obvious energy-saving effect.
According to design proposal provided by the utility model, in the outside of pump shaft, be followed successively by bearing support, seal, balanced body and the water exit end that is mutually permanently connected from top to bottom, it is characterized in that: the motive sealing Balance disc cover that is fixed on the pump shaft is arranged between pump shaft and water exit end, the motive sealing Balance disc is arranged at the bottom in motive sealing Balance disc cover outside, the static seal Balance disc is arranged at the top in motive sealing Balance disc cover outside, between static seal Balance disc and balanced body along circumferentially evenly arranging several static seal Balance disc springs parallel with pump shaft.
On pump shaft, Upper shaft sleeve is arranged corresponding to the bottom of seal, between the lower end of Upper shaft sleeve and seal, fluoroplastic lip type oil sealing is arranged, between the middle part of Upper shaft sleeve and seal, the filler packing is arranged, between the upper end of Upper shaft sleeve and seal, the Gland that is fixedly connected on the seal is arranged, Upper shaft sleeve and motive sealing Balance disc inner room have be enclosed within on the pump shaft on axle spacer and rubber o-ring.
On pump shaft, above the seal, utilize the Bearing Installation bearing support, the retaining water sleeve rubber o-ring that is enclosed within on the pump shaft is arranged in the upper end of Upper shaft sleeve, the upper end of dash cover is positioned at bearing support, the bearing gland of connecting sleeve outside pump shaft on bearing support, the bearing nut that is enclosed within on the pump shaft is arranged between bearing gland and pump shaft, the locking nut that is screwed on the pump shaft is arranged on bearing nut.
With contacting of motive sealing Balance disc the double sealing ring is set on the end face at the static seal Balance disc, wherein, second road is a carbide ring; Offer some dynamic pressure hydraulic thrust compensating grooves on the plane in the double sealing ring equably; On the motive sealing Balance disc with the static seal Balance disc on the corresponding local carbide ring of installing of the second road seal ring.
On pump shaft, Upper shaft sleeve is arranged corresponding to the bottom of seal, between the lower end of Upper shaft sleeve and seal, fluoroplastic lip type oil sealing is arranged, between the middle part of Upper shaft sleeve and seal, the filler packing is arranged, the water outlet of lubricated water is set in the cavity of seal and balanced body composition, this water outlet is higher than the position of fluoroplastic lip type oil sealing, be lower than the lower end surface of filler packing, in balanced body and water exit end, passage is set, the inner of this passage is communicated with water outlet, and the outer end of passage is positioned on the water intake outer surface of inlet segment.
The utility model has the advantages that: adopt novel " two pass, inclusion seal composite structure " up and down.The sealing of first road is made up of the energy efficient seal Balance disc, and it seals effectively and has completely cut off highly pressurised liquid, makes the seal chamber on the sealing and balancing dish be in pressure-less state all the time, and exactly to be in operation be to be in minute-pressure power state to pump.
The sealing of second road is located at the tip portion of this device, and it is combined by traditional packing_seal and fluoroplastic lip type oil sealing, and pump is in operation and all the time fluoroplastic lip type oil sealing place is played the water seal effect of minute-pressure power.And, be lower than the height of filler packing because the water outlet position is higher than the position of fluoroplastic lip type oil sealing, so the liquid in the pump housing can not produce external leakage under the minute-pressure situation, the air in pump running outside can not suck in the pump housing; And played the parking sealer effect at later this filler packing of termination of pumping and fluoroplastic lip type oil sealing institute combination seal.
The highly pressurised liquid that this Leakless device produces in the time of can sealing with the exclusion of water pump operation has effectively played the double action of the axial force of sealing of first road and ballast pump, and can be controlled at artificially and the most compatibly lubricate water 30-50 kilogram/per hour pass through; And traditional DL pump must lose the high pressure surface water yield of 10-15% from the gap of balancing drum when ballast pump ground axial force.So it is that energy-saving effect is remarkable that the utility model is compared with traditional DL pump.
This novel two pass inclusion seal composite structure makes never external leakage of the utility model water pump, has energy-conservation, long service life, saves advantage such as operation undertaking again.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is a motive sealing Balance disc structural drawing.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is a static seal Balance disc structural drawing.
Fig. 5 is the plan view of Fig. 4.
Embodiment
Among the figure: 1, pump shaft, 2, bearing lock nuts, 3, bearing nut, 4, bearing gland, 5, ventricumbent thrust-bearing, 6, bearing support, 7, seal, 8, balanced body, 9, water exit end, 10, the dash cover, 11, upper bearing (metal), 12, static seal Balance disc spring, 13, the static seal Balance disc, 14, motive sealing Balance disc cover, 15, the motive sealing Balance disc, 16, flat key, 17, the Gland stud bolt, 18, the Gland adjusting nut, 19, stud bolt M12 * 60,20, nut M12,21, bolt M8 * 25,22, the bearing spacer, 23, bolt M10 * 30,24, the bearing seal felt collar, 25, dash cover rubber o-ring, 26, Gland, 27, the filler packing, 28, fluoroplastic lip type oil sealing, 29, the seal rubber o-ring, 30, last axle spacer, 31, last axle spacer rubber o-ring, 32, the water exit end rubber o-ring, 33, static seal Balance disc anti-rotation screw, 34, the balanced body rubber o-ring, 35, static seal Balance disc rubber o-ring, 36, lubricated water exhalant canal, 37, motive sealing Balance disc anti-turn screw, 38, flat key, 39, thrust-bearing, 40, the butter box, 41, carbide ring, 42, friction pair, 43, dynamic pressure hydraulic thrust groove.
On pump shaft 1, be followed successively by bearing support 6 from top to bottom, seal 7, balanced body 8 and water exit end 9, the motive sealing Balance disc cover 14 that is fixed on the pump shaft 1 is arranged between pump shaft 1 and water exit end 9, motive sealing Balance disc 15 is arranged at the bottom of overlapping 14 outsides at the motive sealing Balance disc, static seal Balance disc 13 is arranged at the top of overlapping 14 outsides at the motive sealing Balance disc, between static seal Balance disc 13 and balanced body 8 along the static seal Balance disc spring 12 of arranging evenly that circumferentially several are parallel with pump shaft 1, it is when pump operation, form water membrane in the static and dynamic sealing Balance disc, play the effect that produces non-contacting dynamic pressure sealing; When termination of pumping, the thrust that 8 stainless steel springs are housed because of the back fits static seal Balance disc and motive sealing balance card, at this moment plays the effect of mechanical seal again.
On pump shaft 1, Upper shaft sleeve 11 is arranged corresponding to the bottom of seal 7, between the lower end of Upper shaft sleeve 11 and seal 7, fluoroplastic lip type oil sealing 28 is arranged, between the middle part of Upper shaft sleeve 11 and seal 7, filler packing 27 is arranged, between the upper end of Upper shaft sleeve 11 and seal 7, the Gland 26 that is fixedly connected on the seal 7 is arranged, Upper shaft sleeve 11 and 14 in motive sealing Balance disc cover have be enclosed within on the pump shaft 1 on axle spacer 30 and rubber o-ring 31.4 circle filler packings 27 are combined into sealing group with adjacent fluoroplastic lip type oil sealing 28, seal the pump outer air specially and infiltrate when water pump operation; After water pump is out of service, play the parking sealer effect.
Installation bearing support 6 on pump shaft 1, above the seal 7, dash cover 10 and the rubber o-ring 25 that is enclosed within on the pump shaft 1 arranged in the upper end of Upper shaft sleeve 11, the upper end of dash cover 10 is positioned at bearing support 6, the bearing gland 4 of connecting sleeve outside pump shaft 1 on bearing support 6, at bearing gland 4 and 1 of pump shaft the bearing nut 3 that is enclosed within on the pump shaft 1 is arranged, the locking nut 2 that is screwed on the pump shaft 1 is arranged on bearing nut 3.
With contacting of motive sealing Balance disc 15 the double sealing ring is set on the end face at static seal Balance disc 13, wherein, second road is a carbide ring; Offer some dynamic pressure hydraulic thrust compensating grooves on the plane in the double sealing ring equably; On the motive sealing Balance disc 15 with static seal Balance disc 13 on the corresponding local carbide ring of installing of the second road seal ring.
On pump shaft 1, Upper shaft sleeve 11 is arranged at the bottom corresponding to seal 7, between the lower end of Upper shaft sleeve 11 and seal 7, fluoroplastic lip type oil sealing 28 is arranged, between the middle part of Upper shaft sleeve 11 and seal 7, filler packing 27 is arranged, the water outlet of lubricated water is set in the cavity of seal 7 and balanced body 8 compositions, this water outlet is higher than the position of fluoroplastic lip type oil sealing 28, be lower than the lower end surface of filler packing 27, in balanced body 8 and water exit end 9, passage 36 is set, the inner of this passage 36 is communicated with water outlet, the outer end of passage 36 is positioned on the outer surface of water exit end 9, will lubricate water by plastic flexible pipe again and guide first stage impeller suction port negative pressuren zone into.
During installation, coat motive sealing glue in the bottom of motive sealing Balance disc 15, utilizing screw thread to tighten motive sealing Balance disc 15 is fixed on the motive sealing Balance disc cover 14, and the sealing and balancing dish anti-turn screw 37 of screwing in the bottom of motive sealing Balance disc cover 14, again motive sealing Balance disc cover 14 down is enclosed within on the bearing 1 from the bearing top, by on flat key 16 location and the pump shaft 1.
In addition, static seal Balance disc rubber o-ring 35 is enclosed within on the static seal Balance disc 13,8 stainless steel springs 12 are loaded onto at the back side on static seal Balance disc 13 again, with 2 static seal dish anti-turn screws 33 static seal Balance disc 13 is fixed on the balanced body 8 again, static seal Balance disc 13 is to support by 8 stainless steel springs, and making has 5～6 millimeters sliding distances up and down between static seal Balance disc 13 and the seal 8.Put balanced body rubber o-ring 34 again, and on water exit end 9, load onto water exit end rubber o-ring 32, at last balanced body 8 is sleeved on 6 M12 * 60 stud bolts on the water exit end 19, and load onto caulking gum O type circle 29.
Then, fluoroplastic lip type oil sealing 28 is installed on seal 7 bottom positions, reinstall 4 circle filler packings 27, be enclosed within on two Gland stud bolts 17 with Gland 26, be screwed to moderate tightness with Gland nut 18, adjust elasticity during use again, then seal 7 is sleeved on the balanced body 8,6 M12 * 16 stud bolts 19 are fixed on the water exit end 19 with balanced body 8 simultaneously.On pump shaft 1, put dash cover rubber o-ring 25 then, put dash cover 10 again.
Load onto bearing seal felt collar 24 in bearing support 6 bottoms, a supine thrust-bearing 39 is packed in the bearing support 6, load onto bearing spacer 22, a ventricumbent thrust-bearing 5 is packed in the bearing support 6, use the bolt 21 of 4 M8 * 25 that bearing gland 4 and bearing support 6 are compressed again, the butter box 40 of screwing on uses the bolt 23 of 4 M10 * 30 that bearing support 6 is fixed on the seal 7 at last.
With bearing nut 3 pump shaft 1 is fixed on the bearing 5, bearing 1 is rotated with bearing 5, and can do the effect of fine setting up and down of bearing 1; When pump shaft 1 is adjusted to the appropriate location, just pump shaft 1 is locked with bearing pin jack panel 2.
During work, after P3 high pressure water enters removable sealing and balancing dish, form moisture film immediately, just become P2 later on and do not had pressure lubrication water when passing removable sealing and balancing dish, the water level that does not have a press water as P2 rises to the bottom timesharing of 28 fluoroplastic lip type oil sealings and also belongs to no press water; The water level that does not have press water as P2 surpasses 28 when 36 rise, and then P1 and P2 water become little press water simultaneously, so P2 water plays the water seal effect to 28 fluoroplastic lip type oil sealings, it can be sealed the outer air of the pump housing and infiltrate in Seal cage.
After termination of pumping, the utility model can prevent the termination of pumping seal action that the pipeline tap water up pushes up again.Institute is so that the utility model becomes eternal leak free environmental protection water pump.
Though the utility model makes mechanical seal into by filler packing and fluoroplastic lip type oil sealing combined labyrinth and carbon gland, but still keeps a kind of characteristics of removable sealing, uses very convenient.
Behind starting mode of pump, putting on the high pressure water P3 that comes from the final stage stator just can only a spot ofly creep in the static and dynamic sealing Balance disc, play the moisture film lubrication, when passing the later P2 water of static and dynamic sealing Balance disc, P3 become no press water, the utility model is controlled at per hour 30～50 kilograms artificially with this drum P2 water especially, and it only accounts for below 0.5% of the specified amount of washing of water pump.Must there be the high pressure surface flowing water more than 10～15% to lose and pass DL pump balancing drum balancing axial thrust principle, so the utility model has adopted the structure of controllable static and dynamic sealing Balance disc, 8～12 dynamic pressure hydraulic thrust grooves 43 on the sealing plane of specially establishing double sealing ring inside on the static seal Balance disc, have been offered, groove width 4～12MM, groove depth 2～4MM, make static seal Balance disc and motive sealing Balance disc when operation, produce the effect of non-contact dynamic pressure sealing, can form may command sealing moisture film.In order to increase the service life, specially hard alloy seal ring is also loaded onto in the corresponding position with the static seal Balance disc on motive sealing balance card.
When the water level that enters balanced body and the endoceliac no press water P2 of sealing rose to 28, P2 did not still have press water; When the P2 rising water stage surpassed 28 past risings, P1 and P2 became little press water simultaneously, and P2 has played the water seal effect to 28, effectively prevented infiltration in the past pump housing of the outer air of filler packing; And the position of lubricated water out 36 is higher than 28 all the time, but is lower than the height above the packing seal, so can guarantee that the utility model becomes eternal nothing and leaks and leak, the environmental protection water pump of polluted water pump house never.
When the little press water of P1 climbs over lubricated water out 36, flow to P0 and do not have the pressure hydroecium, by a face water plastic flexible pipe P0 is not had little negative pressuren zone that press water is guided to the first stage impeller suction port again, at this moment P0 water has become again has the surface current of certain negative pressure water to be inhaled into first stage impeller.As long as start water pump, this circulation is just being carried out; When water pump was out of service, then the static seal Balance disc did not have the thrust of 8 stainless steel springs because of the back side, the plane of quiet close balance card and moving close Balance disc is fitted play the mechanical seal effect; And just played the effect of parking sealer at apical end 27 filler packings and 28 fluorine moulding mixture lip type oil sealing combination seals.
The utility model can fix on the quantity that enters the lubricated water of static and dynamic sealing Balance disc 30～50 kilograms/this reasonable range the most per hour artificially, equals about 0.5% of water pump rated flow.And the loss of the high pressure surface water yield of traditional DL pump is general all 10～15%, so the utility model average specific DL pump improves pump efficiency more than 5%, directly energy-conservation is more than 7%, and wherein 50 specification pumps is direct energy-conservation up to 15%.
The utility model can be the user and save a large amount of electricity every year, is that first can become leak free environmental protection water pump without mechanical seal in the world.
Claims (5)
1, a kind ofly be used for the vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump, outside in pump shaft (1), be followed successively by the bearing support (6) that is mutually permanently connected from top to bottom, seal (7), balanced body (8) and water exit end (9), it is characterized in that: the motive sealing Balance disc cover (14) that is fixed on the pump shaft (1) is arranged between pump shaft (1) and water exit end (9), motive sealing Balance disc (15) is arranged at the bottom in motive sealing Balance disc cover (14) outside, static seal Balance disc (13) is arranged at the top in motive sealing Balance disc cover (14) outside, between static seal Balance disc (13) and balanced body (8) along circumferential even several static seal Balance disc springs (12) parallel of layout with pump shaft (1).
2, as claimed in claim 1ly be used for the vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump, it is characterized in that: on pump shaft (1), Upper shaft sleeve (11) is arranged at the bottom corresponding to seal (7), between the lower end of Upper shaft sleeve (11) and seal (7), fluoroplastic lip type oil sealing (28) is arranged, between the middle part of Upper shaft sleeve (11) and seal (7), filler packing (27) is arranged, between the upper end of Upper shaft sleeve (11) and seal (7), the Gland (26) that is fixedly connected on the seal (7) is arranged, between Upper shaft sleeve (11) and motive sealing Balance disc cover (14), have to be enclosed within and go up axle spacer (30) and rubber o-ring (31) on the pump shaft (1).
3, as claimed in claim 2ly be used for the vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump, it is characterized in that: on pump shaft (1), the top installation bearing support (6) of seal (7), dash cover (10) and the rubber o-ring (25) that is enclosed within on the pump shaft (1) arranged in the upper end of Upper shaft sleeve (11), the upper end of dash cover (10) is positioned at bearing support (6), the bearing gland (4) of connecting sleeve outside pump shaft (1) on bearing support (6), the bearing nut (3) that is enclosed within on the pump shaft (1) is arranged between bearing gland (4) and pump shaft (1), the locking nut (2) that is screwed on the pump shaft (1) is arranged on bearing nut (3).
4, as claimed in claim 1ly be used for the vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump, it is characterized in that: with contacting of motive sealing Balance disc (15) the double sealing ring is set on the end face at static seal Balance disc (13), wherein, second road is a carbide ring; Offer some dynamic pressure hydraulic thrust compensating grooves on the plane in the double sealing ring equably; Motive sealing Balance disc (15) go up with static seal Balance disc (13) on the corresponding local installation carbide ring of the second road seal ring.
5, as claimed in claim 1ly be used for the vertical energy-conservation Leakless device of just tearing open on the multistage centrifugal pump, it is characterized in that: on pump shaft (1), Upper shaft sleeve (11) is arranged at the bottom corresponding to seal (7), between the lower end of Upper shaft sleeve (11) and seal (7), fluoroplastic lip type oil sealing (28) is arranged, between the middle part of Upper shaft sleeve (11) and seal (7), filler packing (27) is arranged, the water outlet of lubricated water is set in the cavity of seal (7) and balanced body (8) composition, this water outlet is higher than the position of fluoroplastic lip type oil sealing (28), be lower than the lower end surface of filler packing (27), in balanced body (8) and water exit end (9), passage (36) is set, the inner of this passage (36) is communicated with water outlet, and the outer end of passage (36) is positioned on the outer surface of water exit end (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074411 CN2906151Y (en) | 2006-06-22 | 2006-06-22 | Energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074411 CN2906151Y (en) | 2006-06-22 | 2006-06-22 | Energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906151Y true CN2906151Y (en) | 2007-05-30 |
Family
ID=38114785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074411 Expired - Fee Related CN2906151Y (en) | 2006-06-22 | 2006-06-22 | Energy-saving non-leakage device for vertical easily-detachable multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906151Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418806A (en) * | 2010-09-28 | 2012-04-18 | 上海良工阀门厂有限公司 | Detachable valve rod nut locking device |
| CN104251226A (en) * | 2014-09-12 | 2014-12-31 | 乐山东方动力节能设备有限公司 | Novel combined type spindle seal for hydraulic power fan of cooling tower |
| CN104265686A (en) * | 2014-08-26 | 2015-01-07 | 利欧集团股份有限公司 | Pump body structure of self-priming pump |
| CN105422466A (en) * | 2015-12-31 | 2016-03-23 | 镇江江大泵业科技有限公司 | Interlink-type multi-surface centrifugal seal self-sucking pump |
-
2006
- 2006-06-22 CN CN 200620074411 patent/CN2906151Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418806A (en) * | 2010-09-28 | 2012-04-18 | 上海良工阀门厂有限公司 | Detachable valve rod nut locking device |
| CN104265686A (en) * | 2014-08-26 | 2015-01-07 | 利欧集团股份有限公司 | Pump body structure of self-priming pump |
| CN104265686B (en) * | 2014-08-26 | 2017-02-15 | 利欧集团浙江泵业有限公司 | Pump body structure of self-priming pump |
| CN104251226A (en) * | 2014-09-12 | 2014-12-31 | 乐山东方动力节能设备有限公司 | Novel combined type spindle seal for hydraulic power fan of cooling tower |
| CN105422466A (en) * | 2015-12-31 | 2016-03-23 | 镇江江大泵业科技有限公司 | Interlink-type multi-surface centrifugal seal self-sucking pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI MENGYU HIGH EFFICIENCY ENERGY-SAVING PUMP CO. Effective date: 20120815 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214024 WUXI, JIANGSU PROVINCE TO: 214177 WUXI, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120815 Address after: Changan road street Huishan District 214177 in Jiangsu Province, Wuxi city community in Changning No. 515 Patentee after: Wuxi dream high energy saving pump Co., Ltd. Address before: 214024 room 34, No. two, 402, Luling village, Nanchang District, Jiangsu, Wuxi Patentee before: Cao Jiachang Patentee before: Cao Weixiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20150622 |
|
| EXPY | Termination of patent right or utility model |