CN104405649A - Single-suction-inlet double-suction self-balance submersible pump - Google Patents
Single-suction-inlet double-suction self-balance submersible pump Download PDFInfo
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- CN104405649A CN104405649A CN201410667667.7A CN201410667667A CN104405649A CN 104405649 A CN104405649 A CN 104405649A CN 201410667667 A CN201410667667 A CN 201410667667A CN 104405649 A CN104405649 A CN 104405649A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 228
- 230000002153 concerted effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention specifically relates to a single-suction-inlet double-suction self-balance submersible pump. The submersible pump comprises a pump shaft, a suction section, a first discharge section, a first water pump section, a flow division section, a second water pump section, a second discharge section and a water outlet section, wherein the suction section, the first discharge section, the first water pump section, the flow division section, the second water pump section, the second discharge section and the water outlet section are arranged along the axial direction of the pump shaft in sequence; a water outlet of the suction section is communicated with a water inlet of the first discharge section; a first discharge hole of the first discharge section is communicated with the flow division section through an inflow water flow passage on the first water pump section; a water outlet of the water division section is communicated with a water inlet of the first water pump section and a water inlet of the second water pump section respectively; a water outlet of the first water pump section and a water outlet of the second water pump section are both communicated with the water outlet section through the second discharge section; water inlets of a first impeller in the first water pump section and a second impeller in the second water pump section are arranged opposite to each other. According to the submersible pump, the length of the submersible pump is reduced to simplify the structure of the pump, the weight of the entire submersible pump is also reduced, the material and the energy consumption are saved, and meanwhile the failure rate of the submersible pump is also reduced.
Description
Technical field
The invention belongs to pump technology field, be specifically related to a kind of single suction entrance double suction self balancing submersible pump.
Background technique
Along with the raising of the level of production, Submerged Motor Pumps is applied to the main draining of production in mine, forced-ventilated water and after flooding well in complex ore draining more and more.And along with the continuous increase of coal mining depth, the water displacement in colliery is also larger, therefore also just more need the submersible pump of large discharge, and it is low to require that submersible pump sucks water level.At present, double suction Submerged Motor Pumps is wide at coal mine drainage Application comparison.Conventional double suction Submerged Motor Pumps is respectively provided with a suction port in the top and bottom of submersible pump, because the upper end of submersible pump is provided with suction port, therefore conventional double suction Submerged Motor Pumps operationally, whole submersible pump is needed to be installed in below liquid level, therefore very high to the requirement of water level, when water level is provided with suction port lower than the upper end of submersible pump, whole electric pump can not work, thus bring many difficulties to mining production.
Summary of the invention
For solving the deficiency of above-mentioned prior art, the invention provides a kind of single suction entrance double suction self balancing submersible pump, this submersible pump not only can meet the normal need of production in colliery, and greatly reduces the requirement to colliery water level, and structure is simple and drainage effect is good.
For achieving the above object, present invention employs following technological scheme:
A kind of single suction entrance double suction self balancing submersible pump, comprises pump shaft, and this submersible pump comprises suction casing that the axis along pump shaft sets gradually, the first Spit Section, the first pump water section, shunting section, the second pump water section, the second Spit Section and water exit end;
The water outlet of described suction casing and the water intake of the first Spit Section are connected, first discharge opening of described first Spit Section in the first pump water section carry out water flow passage and shunting section is connected, the water outlet of described shunting section is connected with the water intake of the first pump water section, the water intake of the second pump water section respectively; The water outlet of the first pump water section, the water outlet of the second pump water section are all connected by the second Spit Section and water exit end;
Impeller set-up mode in described first pump water section and the second pump water section makes when submersible pump works, the axial force suffered by the first pump water section make a concerted effort and axial force suffered by the second pump water section point to the other side mutually with joint efforts.
Preferably, described first pump water section comprises and is set in the first pump case on pump shaft and the first stator, the first impeller arranged with the first stator one_to_one corresponding is also provided with in first pump water section, first impeller is sheathed to be fixed on pump shaft, described first stator is arranged on the back side in the water delivery direction of the first corresponding impeller, and described first pump case is set in all sides of the first stator and the first impeller; Described first pump case, the first stator and the first impeller three form a first water delivery mechanism, and described first water delivery mechanism is provided with multiple along the axis of pump shaft;
Described second pump water section comprises and is set in the second pump case on pump shaft and the second stator, the second impeller arranged with the second stator one_to_one corresponding is also provided with in second pump water section, second impeller is sheathed to be fixed on pump shaft, described second stator is arranged on the back side in the water delivery direction of the second corresponding impeller, and described second pump case is set in all sides of the second stator and the second impeller; Described second pump case, the second stator and the second impeller three form a second water delivery mechanism, and described second water delivery mechanism is provided with multiple along the axis of pump shaft;
The water intake of described first impeller and the second impeller is oppositely arranged.
Preferably, described first pump case is provided with the hole passed through for pull bar and the runner passed through for fluid along the axis of pump shaft, the runner on described first pump case comprises and point is located at the first pump case both sides and parallel to each other comes water flow passage and confession water flow passage;
Described come the feed-water end of water flow passage and the first discharge opening UNICOM of the first Spit Section, the water intake of the waterexit end and described shunting section of carrying out water flow passage is connected; The water outlet of described shunting section is connected with the impeller eye of chopped-off head second water delivery mechanism with the impeller eye of chopped-off head first water delivery mechanism respectively, and the impeller outlet of final stage first water delivery mechanism and the second discharge opening of the first Spit Section are connected;
The described feed-water end of water flow passage and the second discharge opening of the first Spit Section of supplying is connected, and the waterexit end for water flow passage is connected by the water transport channel in the flow channels on described shunting section and the second pump case; The water outlet of described water transport channel is connected by the second Spit Section and water exit end;
The madial wall of described first pump case and the first impeller and the first stator enclose the first pump water channel jointly, described come water flow passage, the first pump water channel and to be connected successively the complete passage of formation one for water flow passage;
Described second pump case is provided with the hole passed through for pull bar and the water transport channel be arranged in parallel with pull bar along the axis of pump shaft, the madial wall of described second pump case and the second impeller and the second stator enclose the second pump water channel jointly, and the water outlet of described second pump water channel is connected by the second Spit Section and water exit end.
Preferably, described shunting section comprises the shunting pump case be set in outside pump shaft, and the inner side of described shunting pump case is provided with the splitter vane be set on pump shaft; The inner chamber of shunting pump case is divided into the first flow be connected with the impeller eye of the chopped-off head first water delivery mechanism in the first pump water section respectively and the second runner be connected with the impeller eye of the chopped-off head second water delivery mechanism in the second pump water section by described splitter vane.
Preferably, this submersible pump is provided with drive end in the downside of suction casing, and described drive end is provided with output shaft and the joining motor of pump shaft, and the outer of described motor is placed in the suction hood of tubular, the upside of described suction hood and the suction casing of submersible pump are linked together, and the downside of described suction hood is uncovered shape.
Beneficial effect of the present invention is as follows:
1), the middle part of the present invention in the first pump water section and the second pump water section is provided with the shunting section be connected with the runner in the two respectively, as long as the water therefore transported by suction casing can reach the object that shunting section can realize supplying water respectively to the first pump water section and the second pump water section; Because shunting section is arranged on the middle part in the first pump water section and the second pump water section, namely the height of shunting section distance suction casing suction port is lower, and therefore the single-stage intake impeller of suction casing will can meet power needs water being delivered to shunting section from suction casing completely.
Compared to the submersible pump of double suction entrance of the prior art, only need in the present invention to arrange a suction port in the bottom of submersible pump, this structure of the present invention not only decreases the length of submersible pump, and make pump structure become simple, also reduce the weight of whole submersible pump, save material and energy consumption, also reduce the rate of fault of submersible pump simultaneously.In addition, do not need booster pump during the work of this submersible pump, drainage rate is also very fast.
2), in the present invention, the water intake of multiple second impellers in multiple first impeller in the first pump water section and the second pump water section is oppositely arranged, thus when submersible pump is worked, axial force suffered by first pump water section make a concerted effort and axial force suffered by the second pump water section point to the other side mutually with joint efforts, this structure can to make on pump shaft suffered axial force cancel each other, thus stability, balance and reliability when further ensure that pump shaft works.
Accompanying drawing explanation
Fig. 1 is the structural representation of Submerged Motor Pumps.
Fig. 2 is the structural representation of submersible pump.
Fig. 3 is the Submerged Motor Pumps structural representation operationally in the present invention.
The implication of the reference character in figure is as follows:
10-drive end, 11-motor, 12-suction hood, 20-pump shaft
30-submersible pump, 31-suction casing, 311-suction port, 312-intake impeller
32-the first Spit Section 321-the first discharge opening 322-the second discharge opening
33-the first pump water section 331-the first pump case 332-the first stator
333-the first impeller 334-come water flow passage 335-for water flow passage
34-shunting section, 341-splitter vane, 342-first flow 343-the second runner
344-flow channels 35-the second pump water section 351-the second pump case
352-the second stator 353-the second impeller 354-water transport channel
36-the second Spit Section 37-water exit end, 38-pull bar
Embodiment
As shown in Figure 1, 2, this submersible pump comprises pump shaft 20, also comprises suction casing 31, first Spit Section 32, first pump water section 33 that the axis along pump shaft 20 sets gradually, shunting section 34, second pump water section 35, second Spit Section 36 and water exit end 37.Seven parts are formed a submersible pump entirety through suction casing 31, first Spit Section 32, first pump water section 33, shunting section 34, second pump water section 35, second Spit Section 36 and water exit end 37 by pull bar 38 successively.
As shown in Figure 2, described suction casing 31 comprises intake impeller 312, and the downside of intake impeller 312 is provided with suction port 311,
As shown in Figure 2, the upside of described suction casing 31 is provided with the first Spit Section 32, first Spit Section 32 is provided with two discharge openings, and the water flow passage 334 of coming wherein in the first discharge opening 321 and the first pump water section 33 is connected, and the confession water flow passage 335 in the second discharge opening 322 and the first pump water section 33 is connected.
As shown in Figure 2, the upside of the first Spit Section 32 is provided with the first pump water section 33.Described first pump water section 33 comprises the first pump case 331 and the first stator 332 be set on pump shaft 20, the first impeller 333 arranged with the first stator 332 one_to_one corresponding is also provided with in first pump water section 33, first impeller 333 is sheathed to be fixed on pump shaft 20, described first stator 333 is arranged on the back side in the water delivery direction of the first corresponding impeller 333, and described first pump case 331 is set in all sides of the first stator 332 and the first impeller 333; Described first pump case 331, first stator 332 and the first impeller 333 three form a first water delivery mechanism, and described first water delivery mechanism is provided with multiple along the axis of pump shaft 20; The water outlet of the described impeller eye of chopped-off head first water delivery mechanism and the second runner 343 of shunting section 34 that are in upside is connected; The madial wall of described first pump case 331 and the first impeller 333 and the first stator 332 enclose the first pump water channel jointly, described come water flow passage 334, first pump water channel and the formation one that is connected successively for water flow passage 335 run through the complete passage of multiple first water delivery mechanism; The impeller outlet of final stage first water delivery mechanism and the second discharge opening 322 of the first Spit Section 32 that are in lower side are connected.Second discharge opening 322 of the first Spit Section 32 is connected with water exit end 37 by water transport channel 354, second Spit Section 36 in flow channels 344, the second pump water section 35 on the confession water flow passage 335 that is connected successively, shunting section 34.
The upside of the first pump water section 33 is provided with shunting section 34, and described shunting section 34 comprises the shunting pump case be set in outside pump shaft 20, and the inner side of described shunting pump case is provided with the splitter vane 341 be set on pump shaft 20; The inner chamber of shunting pump case is divided into the first flow 342 be connected with the impeller eye of the chopped-off head first water delivery mechanism in the first pump water section 33 respectively and the second runner 343 be connected with the impeller eye of the chopped-off head second water delivery mechanism in the second pump water section 35 by described splitter vane 341, the inner chamber of described shunting pump case and described come the waterexit end of water flow passage 334 be connected.
As shown in Figure 2, the upside of shunting section 34 is provided with the second pump water section.Described second pump water section 35 comprises the second pump case 351 and the second stator 352 be set on pump shaft 20, the second impeller 353 arranged with the second stator 352 one_to_one corresponding is also provided with in second pump water section 35, second impeller 353 is sheathed to be fixed on pump shaft 20, described second stator 352 is arranged on the back side in the water delivery direction of the second corresponding impeller 353, and described second pump case 351 is set in all sides of the second stator 352 and the second impeller 353; Described second pump case 351, second stator 352 and the second impeller 353 three form a second water delivery mechanism, and described second water delivery mechanism is provided with multiple along the axis of pump shaft 20; The water outlet of the impeller eye of chopped-off head second water delivery mechanism and the first flow 342 of shunting section 34 that are in downside is connected; The madial wall of described second pump case 351 and the second impeller 353 and the second stator 352 enclose the second pump water channel running through multiple second water delivery mechanism jointly, and the water outlet that namely water outlet of described second pump water channel is in the final stage second water delivery mechanism of upside is connected with water exit end 37 by the second Spit Section 36.
As shown in Figure 1, 2, 3, the water intake of the first impeller 333 in described first pump water section 33 and the second impeller 353 in the second pump water section 35 is oppositely arranged, thus when submersible pump works, the axial force suffered by the first pump water section 33 make a concerted effort and axial force suffered by the second pump water section 35 point to the other side mutually with joint efforts.
As shown in Figure 1,3, this submersible pump is provided with drive end 10 in the downside of suction casing 31, described drive end 10 is provided with output shaft and the joining motor 11 of pump shaft, the outer of described motor 11 is placed in the suction hood 12 of tubular, the upside of described suction hood 12 and the suction casing 31 of submersible pump are linked together, and the downside of described suction hood 12 is uncovered shape.
Below in conjunction with accompanying drawing 2,3, working procedure of the present invention is described further.
As shown in Figure 3, Submerged Motor Pumps is arranged in mine, and whole Submerged Motor Pumps is divided into submersible pump 30 and drive end 10 two-part from top to bottom, and output shaft and the pump shaft 20 of the motor 11 in drive end 10 are connected.When this submersible pump is installed, only need to make the suction port 311 on the downside of suction casing 31 be placed in below liquid level.
During work, motor 11 rotates, water enters suction hood 12 by downside, with after intake impeller 312 pressurized delivered through suction port 311 in the section of being inhaled into 31 to shunting section 34 place, current are delivered to the first pump water section 33 and the second pump water section 35 place through first flow 342 and the second runner 343 respectively at shunting section 34 place.
The water entering the first pump water section 33 is transported to the second discharge opening 322 place of the first Spit Section 32 from top to bottom through the pressurization of multiple first impeller 333, subsequently on through being connected with water exit end 37 for water transport channel 354, second Spit Section 36 in water flow passage 335, flow channels 344, second pump water section 35 on shunting section 34.
The water entering the second pump water section 35 is transported to the second Spit Section 36 place through the pressurization of multiple second impeller 353 from bottom to top, subsequently on to be connected discharge through water exit end 37.
Claims (5)
1. a single suction entrance double suction self balancing submersible pump, comprise pump shaft (20), it is characterized in that: this submersible pump comprises suction casing (31) that the axis along pump shaft (20) sets gradually, the first Spit Section (32), the first pump water section (33), shunting section (34), the second pump water section (35), the second Spit Section (36) and water exit end (37);
The water outlet of described suction casing (31) and the water intake of the first Spit Section (32) are connected, first discharge opening (321) of described first Spit Section (32) in the first pump water section (33) carry out water flow passage and shunting section (34) is connected, the water outlet of described shunting section (34) is connected with the water intake of the first pump water section (33), the water intake of the second pump water section (35) respectively; The water outlet of the first pump water section (33), the water outlet of the second pump water section (35) are all connected by the second Spit Section (36) and water exit end (37);
Impeller set-up mode in described first pump water section (33) and the second pump water section (35) makes when submersible pump works, the axial force suffered by the first pump water section (33) make a concerted effort and axial force suffered by the second pump water section (35) point to the other side mutually with joint efforts.
2. single suction entrance double suction self balancing submersible pump according to claim 1, it is characterized in that: described first pump water section (33) comprises and is set in the first pump case (331) on pump shaft (20) and the first stator (332), the first impeller (333) arranged with the first stator (332) one_to_one corresponding is also provided with in first pump water section (33), first impeller (333) is sheathed to be fixed on pump shaft (20), described first stator (333) is arranged on the back side in the water delivery direction of corresponding the first impeller (333), described first pump case (331) is set in all sides of the first stator (332) and the first impeller (333), described first pump case (331), the first stator (332) and the first impeller (333) three form a first water delivery mechanism, and described first water delivery mechanism is provided with multiple along the axis of pump shaft (20),
Described second pump water section (35) comprises and is set in the second pump case (351) on pump shaft (20) and the second stator (352), the second impeller (353) arranged with the second stator (352) one_to_one corresponding is also provided with in second pump water section (35), second impeller (353) is sheathed to be fixed on pump shaft (20), described second stator (352) is arranged on the back side in the water delivery direction of corresponding the second impeller (353), and described second pump case (351) is set in all sides of the second stator (352) and the second impeller (353); Described second pump case (351), the second stator (352) and the second impeller (353) three form a second water delivery mechanism, and described second water delivery mechanism is provided with multiple along the axis of pump shaft (20);
The water intake of described first impeller (333) and the second impeller (353) is oppositely arranged.
3. single suction entrance double suction self balancing submersible pump according to claim 2, it is characterized in that: described first pump case (331) is provided with the hole passed through for pull bar and the runner passed through for fluid along the axis of pump shaft (20), the runner on described first pump case (331) comprises and point is located at the first pump case (331) both sides and parallel to each other comes water flow passage (334) and confession water flow passage (335);
Described come the feed-water end of water flow passage (334) and the first discharge opening (321) UNICOM of the first Spit Section (32), the water intake of the waterexit end and described shunting section (34) of carrying out water flow passage (334) is connected; The water outlet of described shunting section (34) is connected with the impeller eye of chopped-off head second water delivery mechanism with the impeller eye of chopped-off head first water delivery mechanism respectively, and the impeller outlet of final stage first water delivery mechanism and second discharge opening (322) of the first Spit Section (32) are connected;
The described feed-water end of water flow passage (335) and second discharge opening (322) of the first Spit Section (32) of supplying is connected, and the waterexit end for water flow passage is connected by the flow channels (344) on described shunting section (34) and the water transport channel (354) on the second pump case (351); The water outlet of described water transport channel (354) is connected by the second Spit Section (36) and water exit end (37);
The madial wall of described first pump case (331) and the first impeller (333) and the first stator (332) enclose the first pump water channel jointly, described come water flow passage, the first pump water channel and to be connected successively the complete passage of formation one for water flow passage;
Described second pump case (351) is provided with the hole passed through for pull bar and the water transport channel (354) be arranged in parallel with pull bar along the axis of pump shaft (20), the madial wall of described second pump case (351) and the second impeller (353) and the second stator (352) enclose the second pump water channel jointly, and the water outlet of described second pump water channel is connected by the second Spit Section (36) and water exit end (37).
4. single suction entrance double suction self balancing submersible pump according to claim 3, it is characterized in that: described shunting section (34) comprises the shunting pump case being set in pump shaft (20) outside, and the inner side of described shunting pump case is provided with the splitter vane (341) be set on pump shaft (20); The inner chamber of shunting pump case is divided into the first flow (342) be connected with the impeller eye of the chopped-off head first water delivery mechanism in the first pump water section (33) respectively and the second runner (343) be connected with the impeller eye of the chopped-off head second water delivery mechanism in the second pump water section (35) by described splitter vane (341).
5. the single suction entrance double suction self balancing submersible pump according to any one of Claims 1 to 4, it is characterized in that: this submersible pump is provided with drive end (10) in the downside of suction casing (31), described drive end (10) is provided with output shaft and the joining motor of pump shaft (11), the outer of described motor (11) is placed in the suction hood (12) of tubular, the upside of described suction hood (12) and the suction casing (31) of submersible pump are linked together, and the downside of described suction hood (12) is uncovered shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667667.7A CN104405649B (en) | 2014-11-20 | 2014-11-20 | Single suction entrance double suction self-balancing immersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667667.7A CN104405649B (en) | 2014-11-20 | 2014-11-20 | Single suction entrance double suction self-balancing immersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405649A true CN104405649A (en) | 2015-03-11 |
| CN104405649B CN104405649B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667667.7A Active CN104405649B (en) | 2014-11-20 | 2014-11-20 | Single suction entrance double suction self-balancing immersible pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN104405649B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285075A (en) * | 2019-07-11 | 2019-09-27 | 合肥恒大江海泵业股份有限公司 | A kind of diving double suction electric pump |
| CN110439845A (en) * | 2019-08-09 | 2019-11-12 | 浙江绿美泵业有限公司 | A kind of low water level single port double suction self-balancing immersible pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048124U (en) * | 1988-08-12 | 1989-11-22 | 合肥电机厂 | Single-abserb submersible pumps with automatic balance |
| CN2158934Y (en) * | 1992-12-12 | 1994-03-16 | 西安交通大学 | Axial balancing submerged pump |
| US20110058928A1 (en) * | 2009-09-09 | 2011-03-10 | Baker Hughes Incorporated | Centrifugal pump with thrust balance holes in diffuser |
| CN102734180A (en) * | 2012-06-28 | 2012-10-17 | 合肥恒大江海泵业股份有限公司 | Multistage submersible pump working stably and reliably |
| CN204327522U (en) * | 2014-11-20 | 2015-05-13 | 合肥恒大江海泵业股份有限公司 | Single suction entrance double suction self balancing submersible pump |
-
2014
- 2014-11-20 CN CN201410667667.7A patent/CN104405649B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048124U (en) * | 1988-08-12 | 1989-11-22 | 合肥电机厂 | Single-abserb submersible pumps with automatic balance |
| CN2158934Y (en) * | 1992-12-12 | 1994-03-16 | 西安交通大学 | Axial balancing submerged pump |
| US20110058928A1 (en) * | 2009-09-09 | 2011-03-10 | Baker Hughes Incorporated | Centrifugal pump with thrust balance holes in diffuser |
| CN102734180A (en) * | 2012-06-28 | 2012-10-17 | 合肥恒大江海泵业股份有限公司 | Multistage submersible pump working stably and reliably |
| CN204327522U (en) * | 2014-11-20 | 2015-05-13 | 合肥恒大江海泵业股份有限公司 | Single suction entrance double suction self balancing submersible pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285075A (en) * | 2019-07-11 | 2019-09-27 | 合肥恒大江海泵业股份有限公司 | A kind of diving double suction electric pump |
| CN110439845A (en) * | 2019-08-09 | 2019-11-12 | 浙江绿美泵业有限公司 | A kind of low water level single port double suction self-balancing immersible pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104405649B (en) | 2016-09-14 |
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Denomination of invention: Single suction double suction self balancing submersible pump Effective date of registration: 20231129 Granted publication date: 20160914 Pledgee: Industrial and Commercial Bank of China Changfeng Branch Pledgor: HEFEI HENGDA JIANGHAI PUMP Co.,Ltd. Registration number: Y2023980068468 |
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