CN109083845B - Rectifying and pressurizing water pump - Google Patents
Rectifying and pressurizing water pump Download PDFInfo
- Publication number
- CN109083845B CN109083845B CN201810294597.3A CN201810294597A CN109083845B CN 109083845 B CN109083845 B CN 109083845B CN 201810294597 A CN201810294597 A CN 201810294597A CN 109083845 B CN109083845 B CN 109083845B
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- China
- Prior art keywords
- shell
- pump
- rectifying
- water pump
- water
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000013016 damping Methods 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding 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
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted 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 invention provides a rectifying and pressurizing water pump, which comprises a pump shell, wherein a containing cavity is arranged in the pump shell, a pump machine is arranged in the containing cavity, a pump motor is connected with the pump machine and is used for providing kinetic energy for the pump machine, and the output end of the motor is connected with a driving shaft; one end of the driving shaft extends out of the pump shell, and the other end of the driving shaft is provided with an impeller; wherein the impeller rotates with the rotation of the drive shaft; the inlet pipeline is internally provided with an inlet rectifying energy-saving device, the rectifying shell comprises a first shell and a second shell, the first shell and the second shell are formed by a rectifying channel, the sections of the first shell and the second shell are trapezoidal, and the inner cavity of the rectifying channel is a large regular hexagon formed by a plurality of small regular hexagons. The pressure loss of the water in the water pump is not increased after the water passes through the rectifying device, so that vortex energy is saved, and the vibration noise of the water pump is small.
Description
Technical Field
The invention relates to the field of water pumps, in particular to a rectifying and pressurizing water pump.
Background
The water pump is composed of a pump cavity, an impeller, a motor, an inlet and outlet pipeline and the like, the motor rotates after being electrified so as to drive the impeller in the pump cavity to rotate, and pipeline liquid enters the pump cavity through the inlet of the water pump and flows out from the outlet after the power of the rotating impeller is increased. Therefore, the water pump has a liquid conveying function and is used for meeting the pipeline flow requirement.
Currently, water pumps are widely used in pipes. However, because the water pump is made of cast iron or steel and other materials, when the water pump works, the motor and the impeller violently run to generate vibration, the vibration and the blocking vibration of the water pump are transmitted to other surrounding parts, so that the vibration and resonance phenomena of the pipeline are caused, noise is generated, the environment is polluted, the precision of the measuring instrument is influenced, and the service life of surrounding facilities is reduced.
In the prior art, water enters the water pump through the water inlet channel, and forms vortex energy through the impeller, so that the water is thrown out, and is sent to everywhere or far away, the pressure of the inlet of the water pump is small, the pressure in the water pump is generated through the rotation of the impeller, the cavitation resistance of the water pump is low, and the vibration noise of the water pump is large due to the fact that the pressure is provided for the impeller, the operation is unstable, the maintenance cost of the water pump is high, and the service life of the water pump is short.
Disclosure of Invention
The invention aims to provide a rectifying and pressurizing water pump which has the advantages that the pressure loss is not increased after water passes through a rectifying device, vortex energy is saved, and the vibration noise of the water pump is small.
In order to achieve the object, the invention provides a rectifying and pressurizing water pump, which comprises a pump shell, an impeller, a driving shaft, a motor and an inlet and outlet pipeline, wherein:
the pump comprises a pump shell, wherein an accommodating cavity is formed in the pump shell, a pump is arranged in the accommodating cavity, and an inlet pipeline connecting flange and an outlet pipeline connecting flange are arranged on the pump shell.
And the motor is connected with the pump and is used for providing kinetic energy for the pump, and the output end of the motor is connected with the driving shaft.
And one end of the driving shaft extends out of the pump shell, and the other end of the driving shaft is provided with an impeller.
An impeller, wherein the impeller rotates with rotation of the drive shaft.
An inlet pipeline, one end of which is connected with a water inlet pipeline, the other end is connected with an inlet pipeline connecting flange on the pump shell, an inlet rectifying energy-saving device is arranged in the inlet pipeline, and the inlet rectifying energy-saving device comprises:
the rectifying shell comprises a first shell and a second shell, wherein the first shell and the second shell are formed by a rectifying channel, the sections of the first shell and the second shell are trapezoidal, and the smaller side of the trapezoid of the first shell is equal to the larger side of the second shell in size; the larger side of the first shell is connected with an incoming water pipeline through a first water inlet flange, and the smaller side of the second shell is connected with a water inlet pipeline connecting flange through a second water inlet flange.
The inner cavity of the rectifying flow passage is a large regular hexagon formed by a plurality of small regular hexagons.
In a further embodiment, the length of the rectifying channel is 15 times or more of the diameter of the circumscribing circle of the small regular hexagon.
In a further embodiment, the small regular hexagon is arranged in the rectifying channel after being added through a barrier.
Further, the number of the small regular hexagons satisfies the following condition:
wherein n is the number of small regular hexagons, d is the diameter of the water inlet pipeline, and L is the length of the small regular hexagons;
the design resistance of each small regular hexagon satisfies the following conditions:
wherein Δp is the design resistance of the small regular hexagon, q is the total flow, and d is the diameter of the water inlet pipeline.
Further, the bottom of the water pump is provided with a damping device, the damping device comprises a base and a damping device arranged between the base and the water pump, wherein the base is a detachable metal base which is symmetrically arranged, the metal bases are connected through a buckle, and the bottom of the damping device is provided with an elastic device.
In a further embodiment, a fixing belt is provided between the pump casing of the water pump and the damping device.
In a further embodiment, the aforementioned fastening strap is detachably connected to the pump housing of the water pump.
Further, the elastic device comprises an upper top surface, a lower top surface, a damping device and a spring, wherein the upper top surface is connected with the lower surface of the buffer device, the lower top surface is connected with the ground, the damping device is arranged between the upper top surface and the lower top surface, and the spring is sleeved on the damping device.
In a further embodiment, an anti-skid block is disposed at the bottom of the shock absorbing device.
In a further embodiment, the anti-skid block is an anti-skid pad, which is made of elastic material.
As can be seen from the above technical matters, the cross sections of the first shell and the second shell are both trapezoids, wherein the smaller side of the trapezoids of the first shell is equal to the larger side of the second shell in size; the bigger limit of first casing is connected with the water supply pipe through first water inlet flange, the less limit of second casing is connected with water supply pipe flange through second water inlet flange, and wherein the size of this first casing is different with the second casing, and rivers are left through the rectification behind the first casing and have been improved the pressure of rivers, and rivers after improving the rivers pressure have further improved the pressure of rivers behind the second casing through less area, and because the volume of first casing is great, can make the even inflow rectification passageway of water.
Because little regular hexagon through the barrier add the back set up in the big regular hexagon, can adjust little hexagonal pipeline's size according to the environment of use in actual process, add the demand that reaches the use through the barrier of different little hexagons.
The length of the rectifying channel is more than or equal to 15 times of the diameter of the circumscribing circle of the small regular hexagon, and the water flow forms a laminar state after passing through the integral flow channel, so that the energy loss caused by vortex is reduced. Meanwhile, the cross section area of each small regular hexagon row meets the condition that the pressure loss caused by flowing to a single straight pipe is not larger than that caused by flowing to the pressure loss, so that the parallel pressure loss of the pipelines is not increased.
It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered a part of the inventive subject matter of the present disclosure as long as such concepts are not mutually inconsistent. In addition, all combinations of claimed subject matter are considered part of the disclosed inventive subject matter.
The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the invention, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a rectifying and pressurizing water pump of the present invention.
Fig. 2 is a schematic structural view of the rectifying and energy-saving device of the present invention.
Fig. 3 is a left side view of fig. 2 of the present invention.
In the figure, 1, a motor, 2, a rectifying energy-saving device, 3, a pump shell, 4, a buffer device, 5, a base, 6, an elastic device, 7, a fixing belt, 8, a knob, 9, a first shell, 10, a second shell, 11, a rectifying channel, 12 and a hexagonal pipeline.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are set forth below, along with the accompanying drawings.
Aspects of the invention are described in this disclosure with reference to the drawings, in which are shown a number of illustrative embodiments. The embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, may be implemented in any of a number of ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the disclosure may be used alone or in any suitable combination with other aspects of the disclosure.
As shown in fig. 1, a rectifying and pressurizing water pump, the water pump comprises a pump shell 3, an impeller, a driving shaft, a motor 1 and inlet and outlet pipes, wherein: a pump shell 3, wherein an accommodating cavity is arranged in the pump shell 3, a pump is arranged in the accommodating cavity, and an inlet pipeline connecting flange and an outlet pipeline connecting flange are arranged on the pump shell 3; the motor 1 is connected with the pump and is used for providing kinetic energy for the pump, wherein the output end of the motor 1 is connected with the driving shaft; one end of the driving shaft extends out of the pump shell 3, and the other end of the driving shaft is provided with an impeller; an impeller, wherein the impeller rotates with rotation of the drive shaft; and one end of the inlet pipeline is connected with a water inlet pipeline, the other end of the inlet pipeline is connected with an inlet pipeline connecting flange on the pump shell 3, and an inlet rectifying energy-saving device 2 is arranged in the inlet pipeline.
Wherein the inlet rectifying economizer 2 comprises: a rectifying housing comprising a first housing 9 and a second housing 10, wherein the first housing 9 and the second housing 10 are formed by a rectifying channel 11, wherein the cross sections of the first housing 9 and the second housing 10 are both trapezoids, wherein the smaller side of the trapezoids of the first housing 9 has a size equal to the larger side of the second housing 10; the larger side of the first shell 9 is connected with an incoming water pipeline through a first water inlet flange, and the smaller side of the second shell 10 is connected with a water inlet pipeline connecting flange through a second water inlet flange; the inner cavity of the rectifying flow passage is a large regular hexagon formed by a plurality of small regular hexagons.
Since the cross sections of the first housing 9 and the second housing 10 are both trapezoidal, wherein the smaller side of the trapezoid of the first housing 9 has a size equal to the larger side of the second housing 10; the bigger limit of first casing 9 is connected with the inflow pipeline through first water inlet flange, the less limit of second casing 10 is connected with the inlet channel flange through second water inlet flange, and wherein the size of this first casing 9 is different with second casing 10, and rivers are left to the pressure that has improved rivers through the rectification behind the first casing 9, and the rivers after improving rivers pressure have further improved the pressure of rivers behind the second casing 10 of less area, and because the volume of first casing 9 is great, can make the even inflow rectification passageway 11 of water.
The plurality of small regular hexagons are pipes 12 with hexagonal cross sections, wherein the outer peripheral surface and the inner peripheral surface of the hexagonal pipes 12 are both regular hexagons.
The rectifying channel 11 is a hollow pipe, wherein the outer surface of the hollow pipe is circular, and the inner surface of the hollow pipe is regular hexagon.
In the use process, the hexagonal pipelines 12 are placed from the bottom surface of the hollow pipeline, and the hexagonal pipelines are sequentially stacked and then filled in the hollow pipeline, so that a rectifying flow channel is formed. In the practical process, the size of the hexagonal pipeline 12 can be adjusted according to the use environment, and the use requirement is met through different small hexagonal barriers.
Wherein the rectifying flow passage is integrally connected with the first shell 9 and the second shell 10 through welding.
In a further embodiment, the number of small regular hexagons satisfies the following condition:
wherein n is the number of small regular hexagons, d is the diameter of the water inlet pipeline, and L is the length of the small regular hexagons;
the design resistance of each small regular hexagon satisfies the following conditions:
wherein Δp is the design resistance of the small regular hexagon, q is the total flow, and d is the diameter of the water inlet pipeline.
Since the length of the rectifying passage 11 is 15 times or more the diameter of the circumscribed circle of the small regular hexagon. The water flow forms a laminar state after passing through the integral flow channel, so that the energy loss caused by vortex is reduced. The cross-sectional area of each small regular hexagon row meets the condition that the pressure loss caused by flowing to a single straight pipe is not larger than that caused by flowing to the straight pipe, so that the parallel pressure loss of the pipelines is not increased.
The pressure loss of the water is not increased after the water passes through the rectifying device, the energy for forming vortex is saved, the inlet pressure of the pump is indirectly improved, the incoming flow is more stable, the cavitation resistance of the water pump is improved, the vibration noise of the water pump is reduced, the water pump is enabled to operate more stably, the operation and maintenance cost of the water pump is reduced, and the service life of the water pump is prolonged.
In a further embodiment, the bottom of the water pump is provided with a damping device, the damping device comprises a base 5 and a damping device 4 arranged between the base 5 and the water pump, wherein the base 5 is a detachable metal base which is symmetrically arranged, the metal bases are connected through a buckle, and the bottom of the damping device 4 is provided with an elastic device 6.
One of the metal bases is provided with a jack, the other metal base is provided with a boss matched with the jack, and meanwhile, the side plane of the metal base can be provided with a matched clamping hook and a clamping sleeve, and the fixing of the left and right positions is realized through the clamping hook and the clamping sleeve, so that the reliability of connection is improved.
In a further embodiment, a fixing band 7 is provided between the pump housing 3 of the water pump and the damping device.
In a further embodiment, the fixing strap 7 is detachably connected to the pump housing 3 of the water pump.
The two end surfaces of the fixing belt 7 are provided with a plurality of through holes, one or a plurality of knobs 8 protruding out of the side surface of the metal base are arranged at the corresponding positions of the metal base, and the two end surfaces of the fixing belt 7 are respectively sleeved on the knobs 8 at the corresponding positions, so that the water pump of the fixing belt 7 and the damping part can be connected into a whole.
In a further embodiment, the elastic device 6 includes an upper top surface, a lower top surface, a damping device, and a spring, wherein the upper top surface is connected with the lower surface of the buffer device 4, the lower top surface is connected with the ground, the damping device is disposed between the upper top surface and the lower top surface, and the spring is sleeved on the damping device.
In a further embodiment, the bottom of the damping device is provided with an anti-skid block.
In a further embodiment, the cleat is a cleat that is an elastomeric material.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (8)
1. The utility model provides a rectification booster pump which characterized in that, the water pump includes pump case, impeller, drive shaft, motor, import and export pipeline, wherein:
the pump comprises a pump shell, wherein an accommodating cavity is formed in the pump shell, a pump is arranged in the accommodating cavity, and an inlet pipeline connecting flange and an outlet pipeline connecting flange are arranged on the pump shell;
the motor is connected with the pump and is used for providing kinetic energy for the pump, and the output end of the motor is connected with the driving shaft;
one end of the driving shaft extends out of the pump shell, and the other end of the driving shaft is provided with an impeller;
an impeller, wherein the impeller rotates with rotation of the drive shaft;
an inlet pipeline, one end of which is connected with a water inlet pipeline, the other end is connected with an inlet pipeline connecting flange on the pump shell, an inlet rectifying energy-saving device is arranged in the inlet pipeline, and the inlet rectifying energy-saving device comprises:
the rectifying shell comprises a first shell and a second shell, wherein the first shell and the second shell are formed by a rectifying channel, the sections of the first shell and the second shell are trapezoidal, and the smaller side of the trapezoid of the first shell is equal to the larger side of the second shell in size; the larger side of the first shell is connected with an incoming water pipeline through a first water inlet flange, and the smaller side of the second shell is connected with a water inlet pipeline connecting flange through a second water inlet flange;
the inner cavity of the rectifying channel is a large regular hexagon formed by a plurality of small regular hexagons;
the length of the rectifying channel is more than or equal to 15 times of the diameter of the circumcircle of the small regular hexagon;
the number of the small regular hexagons satisfies the following condition:
wherein n is the number of small regular hexagons, d is the diameter of the water inlet pipeline, and L is the length of the small regular hexagons;
the design resistance of each small regular hexagon satisfies the following conditions:
wherein Δp is the design resistance of the small regular hexagon, q is the total flow, and d is the diameter of the water inlet pipeline.
2. The rectifying and pressurizing water pump according to claim 1, wherein the small regular hexagon is arranged in the rectifying channel after being added through a barrier.
3. The rectifying and pressurizing water pump according to claim 1, wherein a damping device is arranged at the bottom of the water pump and comprises a base and a damping device arranged between the base and the water pump, wherein the base is a detachable metal base which is symmetrically arranged and is connected with the base through a buckle, and an elastic device is arranged at the bottom of the damping device.
4. A rectifying and pressurizing water pump according to claim 3, characterized in that a fixing band is provided between a pump casing of the water pump and the damping device.
5. The commutating booster water pump of claim 4, wherein the securing strap is removably attached to the pump housing of the water pump.
6. The rectifying and pressurizing water pump according to claim 3, wherein the elastic device comprises an upper top surface, a lower top surface, a damping device and a spring, wherein the upper top surface is connected with the lower surface of the buffering device, the lower top surface is connected with the ground, the damping device is arranged between the upper top surface and the lower top surface, and the spring is sleeved on the damping device.
7. A rectifying and pressurizing water pump according to claim 3, wherein the bottom of said shock absorbing means is provided with an anti-skid block.
8. The commutating booster water pump of claim 7 wherein the cleat is a cleat that is an elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294597.3A CN109083845B (en) | 2018-03-30 | 2018-03-30 | Rectifying and pressurizing water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294597.3A CN109083845B (en) | 2018-03-30 | 2018-03-30 | Rectifying and pressurizing water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083845A CN109083845A (en) | 2018-12-25 |
| CN109083845B true CN109083845B (en) | 2024-03-15 |
Family
ID=64839616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810294597.3A Active CN109083845B (en) | 2018-03-30 | 2018-03-30 | Rectifying and pressurizing water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109083845B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080975B (en) * | 2019-05-06 | 2020-07-28 | 温岭市环力电器有限公司 | Supercharging energy-saving device for water pump |
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|---|---|---|---|---|
| GB993919A (en) * | 1962-03-23 | 1965-06-02 | Friedrich Wilhelm Pleuger | Improvements in pressure-increasing devices for water conduit systems |
| US3961867A (en) * | 1973-04-06 | 1976-06-08 | Holset Engineering Company Limited | Rotatable assembly with rotor abraded by seal ring |
| US5993176A (en) * | 1997-06-30 | 1999-11-30 | Furon Company | Magnetically-driven centrifugal pump |
| JP2001304339A (en) * | 2000-04-27 | 2001-10-31 | Toyoda Gosei Co Ltd | Vibration isolation device for vehicle pump |
| CN202828961U (en) * | 2012-09-29 | 2013-03-27 | 天津新港船务工程有限公司 | Main jet of cabin type pump |
| CN203176013U (en) * | 2013-01-04 | 2013-09-04 | 甘肃葫芦岛泵业有限公司 | Device for energy conservation and pressurization of circulating water pump fluid |
| CN103758796A (en) * | 2014-02-17 | 2014-04-30 | 南通大通宝富风机有限公司 | Anti-surge ring mechanism of cooling fan of control rod drive mechanism |
| CN103953620A (en) * | 2014-05-21 | 2014-07-30 | 无锡杰尔压缩机有限公司 | Rectifying combining device with damping net |
| CN106015015A (en) * | 2016-07-23 | 2016-10-12 | 西安航空学院 | Vortex pump with shrouded impeller |
| CN208073795U (en) * | 2018-03-30 | 2018-11-09 | 江苏海辽科技有限公司 | Rectification booster water pump |
-
2018
- 2018-03-30 CN CN201810294597.3A patent/CN109083845B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB993919A (en) * | 1962-03-23 | 1965-06-02 | Friedrich Wilhelm Pleuger | Improvements in pressure-increasing devices for water conduit systems |
| US3961867A (en) * | 1973-04-06 | 1976-06-08 | Holset Engineering Company Limited | Rotatable assembly with rotor abraded by seal ring |
| US5993176A (en) * | 1997-06-30 | 1999-11-30 | Furon Company | Magnetically-driven centrifugal pump |
| JP2001304339A (en) * | 2000-04-27 | 2001-10-31 | Toyoda Gosei Co Ltd | Vibration isolation device for vehicle pump |
| CN202828961U (en) * | 2012-09-29 | 2013-03-27 | 天津新港船务工程有限公司 | Main jet of cabin type pump |
| CN203176013U (en) * | 2013-01-04 | 2013-09-04 | 甘肃葫芦岛泵业有限公司 | Device for energy conservation and pressurization of circulating water pump fluid |
| CN103758796A (en) * | 2014-02-17 | 2014-04-30 | 南通大通宝富风机有限公司 | Anti-surge ring mechanism of cooling fan of control rod drive mechanism |
| CN103953620A (en) * | 2014-05-21 | 2014-07-30 | 无锡杰尔压缩机有限公司 | Rectifying combining device with damping net |
| CN106015015A (en) * | 2016-07-23 | 2016-10-12 | 西安航空学院 | Vortex pump with shrouded impeller |
| CN208073795U (en) * | 2018-03-30 | 2018-11-09 | 江苏海辽科技有限公司 | Rectification booster water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109083845A (en) | 2018-12-25 |
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