CN116892521A - Structure technology of diving and land dual-purpose water pump - Google Patents
Structure technology of diving and land dual-purpose water pump Download PDFInfo
- Publication number
- CN116892521A CN116892521A CN202110682385.4A CN202110682385A CN116892521A CN 116892521 A CN116892521 A CN 116892521A CN 202110682385 A CN202110682385 A CN 202110682385A CN 116892521 A CN116892521 A CN 116892521A
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- liquid
- water pump
- pump
- motor
- metal sealing
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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.)
- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 230000009189 diving Effects 0.000 title abstract description 8
- 238000005516 engineering process Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 2
- 230000037361 pathway Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 16
- 239000004033 plastic Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010006895 Cachexia Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
- F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated
-
- 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
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The structure technology of the diving and land dual-purpose water pump can be sequentially accumulated: 1. in the structural entity of the water pump, the rotation direction of the liquid driving blade (Y) which is applied into the liquid pump (9) through the motor rotating shaft (6) causes the driven liquid to flow away from the direction in which the motor exists; 2. the rotor (2) is surrounded by a metal sealing isolation cavity (5) in a three-dimensional form, and a motor shaft seal (7) and an interface (K) of an inflating nozzle mechanism (P) and a pressure display device are arranged at the bottommost part of the rotor; 3. the metal sealing structure (10) of the liquid pump (9) forming the main body surrounds the liquid pump (9) in a three-dimensional form, and the liquid inlet pipe interface (11) and the liquid outlet pipe interface (8) are arranged on the liquid pump (9); 4. the metal sealing structure (10) and the metal sealing isolation cavity (5) are connected through the welding of the non-detachable welding ring part (D) to form the structural entity of the full-sealing water pump of the whole machine. The invention has extremely high cost performance and can create conditions for the water pump to be an updated product.
Description
Technical Field
The invention relates to a water pump technology, in particular to a structure technology of a submersible and land dual-purpose water pump.
Background
At present, various liquid pumps with different specifications and models are endless, and the liquid pump is a power device with quite wide and mature application, and has the following defects: various sealing structures are adopted in the liquid pump in the prior art, and are mainly formed by sealing rings with various specifications and made of rubber and plastic polymer materials and gaps with roughness and pressed by smooth metal surfaces, so-called sealing in the prior art can only be considered as a semi-sealing measure which can not prevent fluid molecules such as common air molecules and water molecules from passing through, otherwise, common automobile tires and bicycle tires can never need to be inflated. Even if the various types of air nozzle structures (mechanisms) comprising rubber or/and smooth metal elements forming the tire are themselves, the fluid molecules can pass through the air nozzle structures at any time, but the passing rate is slow just as the passing rate of the tire is slow.
There are two major problems in the prior art:
one is: the water pump is used as an alkaline pump with the largest consumption in the chemical industry field, for example, the water pump is mainly used on land, the required water pump is generally higher or higher, but the water pump cannot be designed to be higher due to the structural restriction of the prior art of the conventional alkaline pump, otherwise, the too high Yang Chenghui can cause adverse cachexia that the high-pressure feedback force in the water pump is also increased dramatically before the outlet of the alkaline pump, and the normal operation of a driving motor forming the alkaline pump can be directly influenced. The sealing force to the motor shaft must be enhanced, but the sealing force to the motor shaft is still far from ideal despite the great technical cost, so the sealing force of the alkali pump Yang Chenglai is not required to be reduced deliberately.
And the second is: the problem of leakage prevention in water pumps, particularly alkaline pumps, is also a considerable problem, and it can be said that all products of the prior art have far not reached the level of sealing against the inside transported liquid molecules that can be reached by the external leakage route of the pump. In the case of chemical pumps capable of pumping extremely expensive or highly toxic chemical liquid materials, it is of course a matter of necessity to prevent the leakage of liquid molecules from the inside of the pump.
In summary, the two problems of the pump head not being limited by the sealing degree of the motor shaft and the liquid molecules conveyed in the pump not being leaked are solved, and the two key problems of improving the technical grade of the water pump in the prior art are obviously solved.
Disclosure of Invention
The purpose of the invention is that:
the two key problems are solved, namely, the two key points of 'the lift of the water pump can not be limited by the sealing degree of the motor rotating shaft' and 'the liquid molecules conveyed in the water pump can not be leaked', so that the practical big problem in the prior art is solved. Of course, the problems such as the deep submergence limitation of the conventional (common) submersible pump can be solved along the way.
The key points of the invention are as follows:
by providing a technology of a water pump structure with double purposes of diving and land, a brand new design scheme with a subversion of the prior art structure is provided for people to discuss.
Compared with the prior art, the invention has the characteristics that:
on the premise of solving the two key point contents, the characteristics of the simplest structure and the easiest manufacture, namely the highest cost performance, can be realized.
Drawings
Fig. 1 illustrates an embodiment of the structure of the present invention, and fig. 2 is a partial schematic view of fig. 1.
1: a motor stator embedded with windings; 2: a motor rotor; 3: a motor bearing; 4: a power line; 5: a fully sealed metal isolation cavity; 6: a motor shaft; 7: a motor shaft seal or a position where the shaft seal is arranged; 8: a drain pipe interface; 9: a liquid pump; 10: a metal sealing structure forming at least the periphery and the bottom of the liquid pump; 11: a liquid inlet pipe interface; 12: an inflatable connecting pipe made of metal is adopted; d: the welding ring part with the optimal section position is recommended to be selected after the upper and lower fully-sealed metal isolation entities (the metal isolation cavity and the liquid pump metal sealing structure) are folded; q: inside the invention is an additional metal sheath for preventing fluid molecules from crossing through the power line.
Detailed Description
In order to achieve the above object of the present invention, the following technical solutions may be adopted:
the whole structure of the invention comprises a driving motor composed of a stator 1 and a rotor 2 and a liquid pump 9 as a pressure transfusion main body, and is characterized in that:
1. the rotation direction of the liquid driving blade Y in the water pump by the motor rotating shaft 6 is caused to flow away from the existing direction of the motor, but not caused to flow towards the existing direction of the motor;
the driving vane Y is disposed above the metal seal 10 of the liquid pump 9 at a position where the liquid is pumped, and is disposed below the metal seal 10 of the liquid pump 9 at a position where the liquid is discharged.
2. At least the rotor 2 is surrounded by the metal sealing and isolating cavity 5 in a three-dimensional form, and a motor shaft seal 7 and an interface K of an inflating nozzle mechanism P communicated with the inflating connecting pipe 12 and a pressure display device are arranged at the conical bottom of the metal sealing and isolating cavity 5;
all the splicing seams involved in the metal seal isolation cavity 5 are connected through a non-detachable welding process.
1) The purpose of the conical bottom is that of the structure:
the invention expands with heat and contracts with cold due to the air in the motor in the processes of starting (the machine body becomes hot) and stopping (the machine body becomes cold). Therefore, after the machine is stopped, a certain amount of external water body is allowed to infiltrate upwards from the motor shaft seal 7 and is temporarily stored in the conical bottom volume of the metal sealing and isolating cavity 5, and when the machine is started, the temporarily stored external water body is withdrawn from the original path into the external water body.
2) Structurally, the mechanism of adopting metal welding (the purpose of solving infinite depth and assisting in solving the problem of preventing external leakage of external liquid molecules transmitted by the invention) is as follows:
the motor shaft seal 7 is arranged at the bottommost position of the metal sealed isolation cavity 5, and the motor shaft seal 7 is the largest molecule 'inlet' formed by a gap at the position allowing water molecules or air molecules to pass through, however, at the high position corresponding to the plane of the 'inlet', no other gap allowing the fluid molecules to pass through is left, so that a fluid molecule channel formed between the 'inlet' and the 'outlet' allowing the fluid molecules to pass through cannot be formed in the metal sealed isolation cavity 5, and the air pressure balanced with an external high-pressure water body and filled in the metal sealed isolation cavity 5 in advance is reliably realized:
the outside high-pressure water body is supported downwards through the movable fit gap (the gap spacing is the largest) of the motor shaft seal 7 so as to be in molecular form to permeate into the upper metal sealing isolation cavity 5.
The conclusion is obvious:
there is only the fear that the "inlet" of the fluid molecules is formed by at least one (e.g., many) of the fluid molecules substantially in a horizontal plane, and there is no "outlet" of the same kind above it, so that the "bottom-up" molecular passages of the fluid are not formed in the motor as a whole. It is evident that the so-called sealing gap between all the removable components of the prior art does not prevent the passage of the fluid molecules.
3) The purpose of setting the above-mentioned charging connector mechanism P with its "inlet" substantially flush with the motor shaft seal 7 (the top external water seepage "inlet") is: the physical balance condition can be directly created for the deep diving infinite of the water pump through the prior 'inflation pressurization'. If the "inlet" of the charging nozzle mechanism P is arranged on top of the fully-sealed metal isolation chamber 5, this will certainly be bad: its "inlet" will become "outlet" and form with the "inlet" of the movable fit gap in its lower portion of the motor shaft seal 7 the above mentioned fluid molecular channel which should not be allowed to exist "from bottom to top".
The data of 'inflation pressurization' is higher than the water depth pressure of the water pump bottom, and after the water pump bottom is sinking, the pressure is released outwards through the gap of the motor shaft seal 7, so that the internal pressure and the external pressure of the water pump can naturally reach the level.
The most complex method of the invention is that if the diving depth is extremely large, for example, there is kilometer deep, then the inflation tube with the length of kilometer connected to the inflation nozzle mechanism P can be adopted.
After the water pump is positioned at the bottom of the water, supplementary inflation is carried out from the water surface, and the inflation pressurization reaches the approved data which is higher than the external water pressure.
3. At least the periphery and the bottom of the liquid pump 9 forming the main body are also surrounded by a metal sealing structure 10 in a three-dimensional form, and a liquid inlet pipe interface 11 and a liquid outlet pipe interface 8 are arranged on the liquid pump 9;
all the splice joints involved in the metal seal structure 10 are joined by a non-removable welding process.
4. The metal sealing structure 10 and the metal sealing isolation cavity 5 are also connected through a welding process of a non-detachable welding ring part D to form a structural entity of the full-sealed water pump of the whole machine;
the structural body of the full-sealed water pump of the whole machine can ensure that the molecules of the transported liquid of the pathway liquid pump 9 do not leak to the outside.
Under the premise of a certain power of the dragging motor, the stroke of the water pump structure is limited only by the flow, and the water pump structure is not limited by the too high stroke as in the prior art.
On the premise of low requirement on the water pump stroke, the rotating direction of the liquid driving blade Y in the water pump structural entity, which is applied into the liquid pump 9 through the motor rotating shaft (6), is changed into: it is also possible to cause the driven liquid to flow in the direction in which the motor is present, i.e. only in this flow direction to change in conformity with the flow direction of the prior art. The cost performance of the method is still extremely high.
If the technical measures of the first type can be used together after the technical measures of the second type, the third type and the fourth type are sequentially added up, the invention can finally lay a foundation for manufacturing the water pump with the simplest technical means to become a new generation product of the water pump, namely:
besides the characteristic of the stroke, the submersible pump with the highest technical requirement can be used for one-time diving for a very long time without being limited by the diving depth, and the condition that liquid molecules conveyed in the submersible pump are leaked outside the submersible pump is avoided, and the highest requirement can be met when the submersible pump is used underwater or used on land.
Not only can the above-mentioned technical level requirements be met, but also the cost performance can be extremely high.
Here again, a bit is emphasized:
finally, according to the principle that the formation of the fluid molecular channel is required to be prevented in the 'two' type, the drilling and threading positions of the flexible power line are also very pointed out when the flexible power line is externally connected with the flexible power line:
if the power line 4 of the invention is threaded into the motor from the top of the metal seal and isolation cavity 5 according to the conventional mode of the prior art, the connection with the stator 1 is implemented:
then, the rubber-plastic sheath itself and the drilling threading part form a proper 'import and export' position through which the fluid molecules can pass. The upper position is called as an 'outlet', a dynamic fit gap between the upper position and the motor rotating shaft 6 at the bottom of the metal sealing and isolating cavity 5, namely, an 'inlet' at the lower position is formed, the molecular fluid channel with inlet and outlet is formed, the highest external high-pressure water body at the bottom of the motor can enter the motor from the 'bottom to top' along the gap of the motor rotating shaft 6, the internal air is extruded and enters the 'semi-sealing' rubber-plastic sheath in the power line 4 in a molecular mode, and finally, the periphery of the sheath exposed in the external water body is discharged in a molecular mode. It is inevitable to damage the motor rotor 2 by touching water.
Obviously, the solution is as follows: the power line 4 should penetrate from the conical bottom (shaft seal position 7 of the motor shaft 6) of the metal seal isolation chamber 5 of the present invention, and it must also be noted that:
in the portion of the lead section of the transition power line 4 passing over the space portion of the tapered outer bottom portion of the metal seal isolation chamber 5, an additional metal sheath Q of the power line 4 must be further covered, and the front and rear ends of the metal sheath Q must be positioned in a welded manner at a position above the welding ring portion D and at the tapered outer bottom portion of the metal seal isolation chamber 5, as shown in fig. 2.
The purpose is that: the electric power line 4 which is drilled and threaded from the outside water body into the rubber-plastic sheath with a certain cross-section area can not be made into a position where the entity which can not prevent the fluid molecules from crossing exists in the invention.
The final penetration of the power line 4 into the metal-sealed isolation chamber 5 constituting the invention is not as simple as in the prior art, but can always be adequately addressed according to its principle of "stopping the passage of fluid molecules", however, this small local hassle will bring great benefit or highest "cost performance" to the whole machine.
In addition, because the whole structure of the invention belongs to a totally-enclosed type model which is never detachable, the disposable service life of the motor is completely dependent on the disposable service life of the dragging motor adopted in the invention.
It is said that: the disposable service life of the non-detachable fully-sealed piston type (the wearing strength of which belongs to the largest class) electric refrigerating compressor used in the domestic refrigerator produced in China can generally reach 10 to 20 years, and the disposable service life of the compressor of the same type produced in Japan can generally reach more than 30 years.
Claims (6)
1. A water pump structure comprises:
the whole structure of the pressure transfusion device comprises a driving motor consisting of a stator (1) and a rotor (2) and a liquid pump (9) serving as a pressure transfusion main body;
the method is characterized in that:
1. the rotation direction of the liquid driving blade (Y) which is applied into the liquid pump (9) through the motor rotating shaft (6) in the structural entity of the water pump is caused to flow away from the existing direction of the motor, and not caused to flow towards the existing direction of the motor;
the driving blade (Y) is arranged at the upper side of a metal sealing structure (10) of the liquid pump (9) at the position where the extracted liquid enters, and is arranged at the lower side of the metal sealing structure (10) of the liquid pump (9) at the position where the liquid is discharged.
2. A structure of a water pump according to claim 1, characterized in that:
2. at least the rotor (2) is surrounded by the metal sealing and isolating cavity (5) in a three-dimensional form, and a motor shaft seal (7) and an inflating nozzle mechanism (P) communicated with the inflating connecting pipe (12) and a pressure display device interface (K) are arranged at the conical bottom of the metal sealing and isolating cavity (5);
all the splicing gaps related to the metal sealed isolation cavity (5) are connected through a non-detachable welding process.
3. A structure of a water pump according to claim 1, characterized in that:
3. at least the periphery and the bottom of a liquid pump (9) forming the main body are also surrounded by a metal sealing structure (10) in a three-dimensional form, and a liquid inlet pipe interface (11) and a liquid outlet pipe interface (8) are arranged on the liquid pump (9);
all the splicing seams involved in the metal sealing structure (10) are connected through a non-detachable welding process.
4. A structure of a water pump according to claim 1, characterized in that:
4. the metal sealing structure (10) and the metal sealing isolation cavity (5) are also connected through a welding process of a non-detachable welding ring part (D) to form a structural entity of the full-sealing water pump of the whole machine;
the structural body of the full-sealed water pump of the whole machine can ensure that the molecules of the transported liquid of the pathway liquid pump (9) do not leak to the outside.
5. A structure of a water pump according to claim 1, characterized in that:
under the premise of a certain power of the dragging motor, the stroke of the water pump structure is limited only by the flow, and the water pump structure is not limited by the too high stroke as in the prior art.
6. A profiled design of a water pump structure according to claim 1, characterized in that:
on the premise of low requirement on the water pump stroke, the rotating direction of the liquid driving blade (Y) in the water pump structural entity which is applied into the liquid pump (9) through the motor rotating shaft (6) is changed into: it is also possible to cause the driven liquid to flow in the direction in which the motor is present, i.e. only in this flow direction to change in conformity with the flow direction of the prior art.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682385.4A CN116892521A (en) | 2021-06-14 | 2021-06-14 | Structure technology of diving and land dual-purpose water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682385.4A CN116892521A (en) | 2021-06-14 | 2021-06-14 | Structure technology of diving and land dual-purpose water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116892521A true CN116892521A (en) | 2023-10-17 |
Family
ID=88312503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110682385.4A Pending CN116892521A (en) | 2021-06-14 | 2021-06-14 | Structure technology of diving and land dual-purpose water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116892521A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146588Y (en) * | 1992-10-15 | 1993-11-17 | 兴城市公路管理段 | Reversible centrifugal pump |
| CN106300771A (en) * | 2016-08-09 | 2017-01-04 | 周巽 | There is the immersible pump of the waterproof sealing structure utilizing air jacking principle and design |
| CN106438392A (en) * | 2016-10-19 | 2017-02-22 | 中国计量大学 | Pump structure capable of enabling liquid molecules in pump not to be leaked during operation through air jacking sealing and including immersion pump and application method of pump structure |
-
2021
- 2021-06-14 CN CN202110682385.4A patent/CN116892521A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146588Y (en) * | 1992-10-15 | 1993-11-17 | 兴城市公路管理段 | Reversible centrifugal pump |
| CN106300771A (en) * | 2016-08-09 | 2017-01-04 | 周巽 | There is the immersible pump of the waterproof sealing structure utilizing air jacking principle and design |
| CN106438392A (en) * | 2016-10-19 | 2017-02-22 | 中国计量大学 | Pump structure capable of enabling liquid molecules in pump not to be leaked during operation through air jacking sealing and including immersion pump and application method of pump structure |
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