CN106438391B - A kind of negative pressure total head injection immersible pump - Google Patents
A kind of negative pressure total head injection immersible pump Download PDFInfo
- Publication number
- CN106438391B CN106438391B CN201610913934.3A CN201610913934A CN106438391B CN 106438391 B CN106438391 B CN 106438391B CN 201610913934 A CN201610913934 A CN 201610913934A CN 106438391 B CN106438391 B CN 106438391B
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- China
- Prior art keywords
- negative pressure
- nozzle
- intake chamber
- impeller
- pump
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002347 injection Methods 0.000 title abstract 2
- 239000007924 injection Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 19
- 239000000203 mixture Substances 0.000 claims abstract 4
- 239000007921 spray Substances 0.000 claims 7
- 230000009189 diving Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to water pump technologies, disclose a kind of negative pressure total head injection immersible pump, including pump case, the impeller that pump case one end is equipped with motor and is driven by motor, the pump case other end is provided with water outlet, once negative pressure intake chamber is set gradually along water outlet to impeller direction in pump case, secondary negative pressure intake chamber, mix diffuser pipe, impeller operating room, once high pressure nozzle is installed in negative pressure intake chamber, negative pressure intake chamber is equipped with a negative pressure water inlet on pump case, secondary mixing nozzle is installed in secondary negative pressure intake chamber, secondary negative pressure intake chamber is equipped with secondary negative pressure water inlet on pump case, check-valves is installed on secondary negative pressure water inlet, high pressure nozzle, secondary mixing nozzle, mix diffuser pipe, impeller operating room is located on same axis and is sequentially communicated, one time high pressure nozzle opens up once high pressure in pump case Nozzle water inlet.Its unique structure can realize the work of total head under low power scenarios, energy-efficient.
Description
Technical field
The present invention relates to water pump technologies more particularly to a kind of negative pressure total head to spray immersible pump.
Background technique
Traditional vane centrifugal immersible pump is easy to use and be widely used because its flow is big.But in its low lift
In use, largely there is the problems such as excessive electric current, overload operation, in the longer place of route in use, easily occurring
Difficulty in starting, to power grid impact the problems such as it is big, so existing immersible pump generally total head design on use heavy-duty motor,
But energy consumption, inefficient is increased at this time.Flow control electric current is adjusted using manually-operated gate there are also some areas, is increased in this way
Big operation difficulty, reduces efficiency.
Therefore, designing the immersible pump that a kind of power is low, flow is big, total head works becomes those skilled in the art of the present technique urgently
Problem to be solved.
Summary of the invention
The present invention is intended to provide a kind of negative pressure total head sprays immersible pump, the very good solution above problem, structure are only
Spy can realize the work of total head under low power scenarios, energy-efficient.
The technical scheme is that a kind of negative pressure total head sprays immersible pump, including pump case, pump case one end is equipped with motor
And the impeller being driven by motor, the pump case other end are provided with water outlet, are disposed in pump case along water outlet to impeller direction
Negative pressure intake chamber, secondary negative pressure intake chamber mix diffuser pipe, impeller operating room, are equipped with one in a negative pressure intake chamber
Sub-high pressure nozzle, a negative pressure intake chamber are equipped with a negative pressure water inlet on pump case, are equipped with two in secondary negative pressure intake chamber
Secondary mixing nozzle, secondary negative pressure intake chamber are equipped with secondary negative pressure water inlet on pump case, are equipped with only on secondary negative pressure water inlet
Valve is returned, a high pressure nozzle, secondary mixing nozzle, mixing diffuser pipe, impeller operating room are located on same axis and are sequentially communicated,
One time high pressure nozzle opens up once high pressure nozzle water inlet in pump case.
Further, the secondary negative pressure intake chamber is additionally provided with one or more negative pressure and intakes with mixing between diffuser pipe
Room, the secondary negative pressure intake chamber are equipped with mixing nozzle with mixing in the negative pressure intake chamber being arranged between diffuser pipe, and described two
Secondary negative pressure intake chamber with mix the negative pressure intake chamber being arranged between diffuser pipe on pump case be equipped with negative pressure water inlet, the negative pressure into
Check-valves, a high pressure nozzle, secondary mixing nozzle, mixing nozzle, mixing diffuser pipe, impeller work are installed on the mouth of a river
Room is located on same axis and is sequentially communicated.
Further, a negative pressure water inlet, be mounted on filtering screen on check-valves.
Further, it is welded on the water outlet on ring flange or water outlet and is provided with internal screw thread.
Further, when power of motor is constant, diving pump lift is directly proportional to impeller diameter, diving pump lift and each spray
Outspoken diameter is inversely proportional, and when impeller diameter and constant thickness, immersible pump maximum stream flow and secondary mixing nozzle and mixing nozzle are straight
Diameter is directly proportional.
Further, when the power of motor is 750W, the diameter of high pressure nozzle outlet is 8cm, secondary mixing spray
Mouth outlet diameter be 13cm, mixing diffuser pipe outlet diameter be 19cm, impeller diameter 130cm, impeller with a thickness of
0.6cm。
Further, when the power of motor is 750W, the diameter of high pressure nozzle outlet is 6.7cm, secondary mixing
The diameter of jet expansion be 10.6cm, mixing diffuser pipe outlet diameter be 17cm, impeller diameter 138cm, impeller with a thickness of
0.6cm。
The beneficial effects of the present invention are: the present invention utilizes fluidics, realized using secondary or more negative pressure water inlet
Low-power, total head, big flow technical effect.
1. the present invention, using secondary or more negative pressure water inlet, for water pump when low lift works, impeller rotates the height generated
Pressure water flows through primary high pressure nozzle and sprays, and a negative pressure water inlet, a high-low pressure mixing water are formed around a high pressure nozzle
Stream enters secondary mixing nozzle, then sprays through secondary mixing nozzle, and secondary negative pressure water inlet is formed around secondary mixing nozzle；
At this point, the check-valves for being located at secondary negative pressure water inlet is opened because of the effect of secondary negative pressure.Intake jointly by negative pressure twice and
The big flow of formation is endlessly discharged through water outlet.For water pump after entering high lift state step by step, the pressure of water outlet is big
When the pressure of secondary negative pressure water inlet, the check-valves of secondary negative pressure water inlet is closed because of the high pressure generated in pump case, at this time
The work of water pump is transformed into a negative pressure water inlet comprehensively and carries out.Can also be arranged as needed three times or more multiple negative pressure into
Water carries out multiple pressurization to water flow in the case where same motor, impeller, improves the lift of water pump water outlet, while can be with
Multiple water inlet is carried out, the water flow of water pump is increased.
2. a high pressure nozzle of the invention opens up once high pressure nozzle water inlet in pump case, the water flow in pump case is also
It can be again introduced into a high pressure nozzle from a high pressure nozzle water inlet, carry out pressurization again, further improve water
The pressure of stream, increases lift.
3. the present invention is mounted on filtering screen on a negative pressure water inlet, check-valves, avoids impurity and enter pump case
It is interior, ensure that water pump using safe, avoid the damage of pump motor, impeller etc., improve service life；It is welded on water outlet
It is connected to ring flange, it is convenient to be connect with water pipe, improve the convenience of installing and dismounting.
4. power of motor it is constant when, impeller diameter, thickness, high pressure spray mouthpiece diameter, secondary mixing nozzle
Etc. the lift that the diameter of each mixing nozzle determines water pump；When impeller diameter, constant thickness, the secondary and above mixing nozzle
Diameter determines the flow of water pump；When power of motor is constant, diving pump lift it is directly proportional to impeller diameter, dive under water pump lift and
Each nozzle diameter is inversely proportional, when impeller diameter and when constant thickness, immersible pump maximum stream flow and secondary or more each nozzle diameter
It is directly proportional.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the present invention；
Fig. 2 is another structural schematic diagram of the present invention；
In figure: 1. pump cases, 2. motors, 3. impellers, 4. water outlets, 5. negative pressure intake chambers, 51. high pressure nozzles,
52. a negative pressure water inlet, 53. high pressure nozzle water inlets, 6. 2 negative pressure intake chambers, 61. 2 mixing nozzles, 62.
Secondary negative pressure water inlet, 63. check-valves, 7. mixing diffuser pipes, 8. impeller operating rooms.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
Embodiment one: as shown in Figure 1, the present invention provides a kind of negative pressure total heads to spray immersible pump, including pump case 1, pump
The impeller 3 that 1 one end of shell is equipped with motor 2 and is driven by motor 2,1 other end of pump case are provided with water outlet 4, and pump case 1 is interior along water outlet
4 to 3 direction of impeller set gradually once negative pressure intake chamber 5, secondary negative pressure intake chamber 6, mixing diffuser pipe 7, impeller operating room
8, once high pressure nozzle 51, a negative pressure intake chamber 5 are equipped with a negative pressure to the interior installation of a negative pressure intake chamber 5 on pump case 1
Water inlet 52, secondary mixing nozzle 61 is equipped in secondary negative pressure intake chamber 6, and secondary negative pressure intake chamber 6 is equipped with two on pump case 1
Secondary negative pressure water inlet 62 is equipped with check-valves 63, a high pressure nozzle 51, secondary mixing nozzle on secondary negative pressure water inlet 62
61, mixing diffuser pipe 7, impeller operating room 8 are located on same axis and are sequentially communicated, and one time high pressure nozzle 51 is opened in pump case 1
Equipped with a high pressure nozzle water inlet 53.Filtering screen is mounted on negative pressure water inlet 52, check-valves 63.Water outlet 4
On be welded on ring flange or water outlet 4 and be provided with internal screw thread.
Embodiment two: as shown in Fig. 2, the present invention provides a kind of negative pressure total heads to spray immersible pump, including pump case 1, pump
The impeller 3 that 1 one end of shell is equipped with motor 2 and is driven by motor 2,1 other end of pump case are provided with water outlet 4, and pump case 1 is interior along water outlet
4 to 3 direction of impeller set gradually once negative pressure intake chamber 5, secondary negative pressure intake chamber 6, mixing diffuser pipe 7, impeller operating room
8, a negative pressure intake chamber 5 is interior to install once high pressure nozzle 51, and one time high pressure nozzle 51 opens up once high pressure in pump case 1
Nozzle water inlet 53, secondary negative pressure intake chamber 6 are additionally provided with one or more negative pressure intake chambers with mixing between diffuser pipe 7, and one
Secondary negative pressure intake chamber 5 is equipped with a negative pressure water inlet 52 on pump case, is equipped with secondary mixing nozzle in secondary negative pressure intake chamber 6
61, secondary negative pressure intake chamber 6 is equipped with secondary negative pressure water inlet 62 on pump case 1, is equipped with non-return on secondary negative pressure water inlet 62
Valve 63, secondary negative pressure intake chamber are equipped with mixing nozzle with mixing in the negative pressure intake chamber being arranged between diffuser pipe, secondary negative pressure
Intake chamber is equipped with negative pressure water inlet with the negative pressure intake chamber being arranged between diffuser pipe is mixed on pump case, installs on negative pressure water inlet
There is check-valves, a high pressure nozzle 51, secondary mixing nozzle 61, mixing nozzle, mixing diffuser pipe 7, impeller operating room 8 are located at together
On one axis and it is sequentially communicated.
Specifically, when 2 power of motor is 750W, the diameter design of a high pressure nozzle 51 outlet is in voltage 220V
8cm, the diameter that secondary mixing nozzle 61 exports are 13cm, and the diameter that mixing diffuser pipe 7 exports is 19cm, and 3 diameter of impeller is
130cm, impeller 3 is with a thickness of 0.6cm, and amount lift is 33 meters at this time, and amount flow is 1.5m3, and pump head reaches as high as
To 40 meters, flow reaches 12m3, maximum current 5.6A.
In voltage 220V, when 2 power of motor is 750W, the diameter of a high pressure nozzle 51 outlet is 6.7cm, secondary mixing
The diameter that nozzle 61 exports is 10.6cm, and the diameter that mixing diffuser pipe 7 exports is 17cm, and 3 diameter of impeller is 138cm, and impeller 3 is thick
Degree is 0.6cm, and amount lift is 36 meters at this time, and amount flow is 1.5m3, and pump head can reach 55 meters, flow reaches
To 5.5m3, maximum current 5.7A.
Arrow direction is the direction that water is run in pump case 1 in figure, and the present invention is using secondary or more negative pressure water inlet, water
In low lift work, the high pressure water flow that the rotation of impeller 3 generates sprays pump through a high pressure nozzle 51, in a high pressure nozzle 51
Surrounding forms a negative pressure water inlet, and one time high-low pressure mixed flow enters secondary mixing nozzle 61, then through secondary mixing nozzle 61
It sprays, and forms secondary negative pressure water inlet around secondary mixing nozzle 61；At this point, being located at the check-valves of secondary negative pressure water inlet 62
63 open because of the effect of secondary negative pressure.Intake jointly by negative pressure twice and the big flow that is formed through water outlet 4 continually
Discharge.Water pump is after entering high lift state step by step, when the pressure of water outlet 4 is greater than the pressure of secondary negative pressure water inlet 62,
The check-valves 63 of secondary negative pressure water inlet 62 is closed because of the high pressure generated in pump case 1, and the work of water pump is transformed into comprehensively at this time
Negative pressure water inlet carries out.Three times or more multiple negative pressure water inlet can also be set as needed, in same motor 2, impeller 3
In the case where, multiple pressurization is carried out to water flow, improves the lift of water pump water outlet, while can carry out multiple water inlet, is increased
The big water flow of water pump.A high pressure nozzle 51 of the invention opens up once high pressure nozzle water inlet 53 in pump case, pump
Water flow in shell 1 can also be again introduced into a high pressure nozzle 51 from a high pressure nozzle water inlet 53, carry out increasing again
Pressure, further improves the pressure of water flow, increases lift.The present invention pacifies on a negative pressure water inlet 52, check-valves 63
Equipped with filtering screen, avoid impurity and enter in pump case 1, ensure that water pump using safe, avoid pump motor 2, impeller 3
Deng damage, improve service life；Ring flange is welded on water outlet 4, it is convenient to be connect with water pipe, improve installing and dismounting
Convenience.And in pump working, the diameter of a high pressure nozzle 51 outlet is limited, thus starting current is small, inclined in voltage
There is a good starting performance in low area, about consumes 4/5ths of 2 general power of pump motor when high pressure nozzle 51 works one time,
/ 5th of month consumption 2 general power of pump motor when secondary mixing nozzle 61 works.
2 power of motor it is constant when, 3 diameter of impeller, thickness, one time 51 mouthfuls of high pressure nozzle diameter, secondary mixing spray
The diameter of each mixing nozzle such as mouth 61 determines the lift of water pump；When 3 diameter of impeller, constant thickness, the secondary and above mixing
The diameter of nozzle determines the flow of water pump；When 2 power invariability of motor, diving pump lift is directly proportional to 3 diameter of impeller, diving
Pump lift is inversely proportional with each nozzle diameter, when 3 diameter of impeller and constant thickness, immersible pump maximum stream flow and secondary mixing nozzle
And mixing nozzle diameter is directly proportional.
Compared with prior art, the present invention unique structure, can realize the work of total head, big flow under low power scenarios
Make, it is energy-efficient.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art
All it should fall within the scope of protection of the appended claims of the present invention.
Claims (7)
1. a kind of negative pressure total head sprays immersible pump, including pump case, the leaf that described pump case one end is equipped with motor and is driven by motor
Wheel, the pump case other end are provided with water outlet, it is characterised in that: set gradually in the pump case along water outlet to impeller direction
Once negative pressure intake chamber, secondary negative pressure intake chamber, mixing diffuser pipe, impeller operating room, the interior peace of a negative pressure intake chamber
Equipped with a high pressure nozzle, a negative pressure intake chamber on pump case be equipped with a negative pressure water inlet, the secondary negative pressure into
Secondary mixing nozzle is installed in water chamber, the secondary negative pressure intake chamber is equipped with secondary negative pressure water inlet on pump case, and described two
Check-valves, a high pressure nozzle, secondary mixing nozzle, mixing diffuser pipe, impeller work are installed on secondary negative pressure water inlet
Room is located on same axis and is sequentially communicated, and a high pressure nozzle opens up once high pressure nozzle water inlet in pump case.
2. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: the secondary negative pressure intake chamber with
Be additionally provided with one or more negative pressure intake chambers between mixing diffuser pipe, the secondary negative pressure intake chamber with mix between diffuser pipe
Mixing nozzle is installed in the negative pressure intake chamber of setting, the secondary negative pressure intake chamber with mix the negative pressure being arranged between diffuser pipe
Intake chamber is equipped with negative pressure water inlet on pump case, is equipped with check-valves, high pressure nozzle, two on the negative pressure water inlet
Secondary mixing nozzle, mixing nozzle, mixing diffuser pipe, impeller operating room are located on same axis and are sequentially communicated.
3. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: a negative pressure water inlet,
Filtering screen is mounted on check-valves.
4. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: be welded with method on the water outlet
Internal screw thread is provided on blue disk or water outlet.
5. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: when power of motor is constant, dive
Pump head is directly proportional to impeller diameter, and diving pump lift is inversely proportional with each nozzle diameter, when impeller diameter and constant thickness,
Immersible pump maximum stream flow is directly proportional to secondary mixing nozzle and mixing nozzle diameter.
6. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: the power of motor is 750W
When, the diameter of high pressure nozzle outlet is 8cm, and the diameter of secondary mixing nozzle outlet is 13cm, the outlet of mixing diffuser pipe
Diameter is 19cm, and impeller diameter 130cm, impeller is with a thickness of 0.6cm.
7. negative pressure total head according to claim 1 sprays immersible pump, it is characterised in that: the power of motor is 750W
When, the diameter of high pressure nozzle outlet is 6.7cm, and the diameter of secondary mixing nozzle outlet is 10.6cm, and mixing diffuser pipe goes out
The diameter of mouth is 17cm, and impeller diameter 138cm, impeller is with a thickness of 0.6cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913934.3A CN106438391B (en) | 2016-10-20 | 2016-10-20 | A kind of negative pressure total head injection immersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913934.3A CN106438391B (en) | 2016-10-20 | 2016-10-20 | A kind of negative pressure total head injection immersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438391A CN106438391A (en) | 2017-02-22 |
| CN106438391B true CN106438391B (en) | 2019-01-01 |
Family
ID=58175888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610913934.3A Active CN106438391B (en) | 2016-10-20 | 2016-10-20 | A kind of negative pressure total head injection immersible pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN106438391B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108079624A (en) * | 2017-11-15 | 2018-05-29 | 江苏华纳环保科技有限公司 | A kind of Novel unpowered waterpower clarifier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5110265A (en) * | 1991-01-16 | 1992-05-05 | Aisan Kogyo Kabushiki Kaisha | Fuel pump |
| CN2094634U (en) * | 1991-07-27 | 1992-01-29 | 王立明 | No delivery lift pipe negative pressure submersible pump |
| JP3363245B2 (en) * | 1994-04-18 | 2003-01-08 | 株式会社 日立インダストリイズ | Submerged pump |
| CN2349387Y (en) * | 1997-12-17 | 1999-11-17 | 颜龙 | Self-cooling submersible land and land dual-purpose water pump |
| JP4273254B2 (en) * | 2002-06-25 | 2009-06-03 | Ｓｍｃ株式会社 | Immersion pump with improved start-up discharge performance |
| CN102003396A (en) * | 2010-12-14 | 2011-04-06 | 四川润德机电技术有限公司 | Self-cooling guide vane downdraft type submersible pump |
| CN206092449U (en) * | 2016-10-20 | 2017-04-12 | 孙洪建 | Negative pressure total head sprays immersible pump |
-
2016
- 2016-10-20 CN CN201610913934.3A patent/CN106438391B/en active Active
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| CN106438391A (en) | 2017-02-22 |
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Effective date of registration: 20230817 Address after: No. 1512, 15th Floor, Building 1, No. 505 Datian Road, Dafeng Street, Xindu District, Chengdu City, Sichuan Province, 610000 Patentee after: Chengdu Hanba Electromechanical Equipment Co.,Ltd. Address before: Group 19, Jingle Village, Youxin Town, Jintang County, Chengdu City, Sichuan Province, 610400 Patentee before: Sun Hongjian |