CN114517792B - Lifting type water pump - Google Patents
Lifting type water pump Download PDFInfo
- Publication number
- CN114517792B CN114517792B CN202210121091.9A CN202210121091A CN114517792B CN 114517792 B CN114517792 B CN 114517792B CN 202210121091 A CN202210121091 A CN 202210121091A CN 114517792 B CN114517792 B CN 114517792B
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- Prior art keywords
- pump body
- inner shell
- sliding
- hollow
- outer shell
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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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
- F04D13/066—Floating-units
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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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the field of water pumps, and particularly relates to a lifting type water pump which comprises a pump body, wherein a water inlet of the pump body is arranged at the bottom, a suspension assembly is arranged on the water inlet and used for floating the pump body, the side surface of the pump body is connected with the inner wall of a water pool in a vertically sliding mode through a lifting assembly, the suspension assembly comprises an outer shell, the water inlet is arranged in the outer shell, a plurality of first filtering holes are formed in the side surface of the outer shell, and a suspension body is connected to the bottom of the outer shell, so that the lifting type water pump has the advantages of saving energy and protecting the pump body from long-term operation.
Description
Technical Field
The invention belongs to the field of water pumps, and particularly relates to improvement of a lifting type water pump in structure and process.
Background
The lifting type water pump is a pump body which lifts and pumps water, such as a submersible pump, and is important equipment in the fields of domestic water, mine rescue, industrial cooling, farm irrigation, seawater lifting, ship load regulation, fountain landscapes and the like.
When the submersible pump is specifically used, the pump body is required to be placed in water, then the pump body is submerged in the water to start pumping operation, but in dams, ponds and sewage ponds with deeper depths, the pump body is often placed at a lowered position in the water because the lowered height of the water surface after pumping cannot be judged, so that the pumping state of the pump body is kept, but because the pump body is located at the deeper position, more upward movement mechanical energy is required to be provided for the water body, more electric energy is required to be consumed, the submersible pump is unfavorable for energy conservation and environmental protection, and the pump body is placed in the water for a long time, so that the working condition of the pump body is unfavorable for protection, particularly in a sewage pond, the consequences of corrosion and corrosion of parts are easy to generate.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly lifting type water pump capable of protecting a pump body from running for a long time, and in order to achieve the aim, the invention adopts the following technical scheme:
the lifting type water pump comprises a pump body, wherein a water inlet of the pump body is arranged at the bottom, a suspension assembly is arranged on the water inlet and used for floating the pump body, and the side surface of the pump body is connected with the inner wall of a water tank in a vertically sliding manner through a lifting assembly;
the suspension assembly comprises an outer shell, the water inlet is formed in the outer shell, a plurality of first filtering holes are formed in the side face of the outer shell, and the bottom of the outer shell is connected with a suspension.
Further, the shell body comprises a plurality of hollow rings which are of hollow structures, the hollow rings are distributed in the vertical direction, the hollow rings are sleeved on the pump body, two adjacent hollow rings are fixedly connected through an annular plate, the first filtering holes are formed in the side face of the annular plate, the annular plate is obliquely arranged, and the diameters of the hollow rings are sequentially increased from top to bottom.
Further, the detachable filter sleeve that is connected with in suspension body top, the filter sleeve is hollow structure, its top fixed connection the water inlet of the pump body, and with the water inlet intercommunication, the filter sleeve sets up in the shell body, the filter sleeve side is provided with a plurality of second filtration pore, the diameter of second filtration pore is less than first filtration pore.
Further, the top of the suspension body is provided with a protruding portion, the protruding portion is provided with external threads, the filter sleeve is provided with internal threads matched with the protruding portion, and the protruding portion is in threaded connection with the filter sleeve.
Further, the suspension body comprises an inner shell detachably connected with the outer shell, the protruding portion is arranged at the top of the inner shell, the inner shell is provided with a cavity with a downward opening, the end face of the opening of the cavity is connected with the top of the telescopic sleeve, the bottom of the telescopic sleeve is fixedly connected with an adjusting plate, and the adjusting plate is connected with the inner shell through an adjusting mechanism in a height-adjustable mode.
Further, the adjusting mechanism comprises a screw, the adjusting plate is in threaded connection with the screw, the screw is vertically arranged, the top of the screw is arranged in the inner shell and is rotatably connected with the inner wall of the inner shell, and the bottom of the screw extends out of the adjusting plate.
Further, the telescopic sleeve is of a corrugated pipe structure, is of a hollow structure, and forms a hollow structure together with the top of the adjusting plate and the inside of the inner shell;
the telescopic sleeve is characterized in that a connecting ring is fixedly connected to the top of the telescopic sleeve, an annular groove with an upward opening is formed in the connecting ring, the bottom of the inner shell is arranged in the annular groove, and the connecting ring is detachably connected with the inner shell.
Further, still include first solid fixed ring, the fixed cover of first solid fixed ring is established on the pump body, and be located the shell body top, the top fixedly connected with of the hollow ring that is located the top a plurality of first nuts, first nut threaded connection has first bolt, first bolt passes first solid fixed ring.
Further, the lifting assembly comprises two sliding rails arranged on the inner wall of the water tank, the two sliding rails are arranged side by side, a sliding groove is formed in one opposite side of each sliding rail, a sliding plate is arranged between the two sliding rails, protruding blocks are arranged on two sides of each sliding plate, the protruding blocks are slidably arranged in the sliding grooves, and the sliding plates are connected with the pump body through brackets.
Further, the sliding plate is connected with a winch, and a connecting rope on the winch is connected with the sliding plate.
The invention has the following beneficial effects: the floating assembly provides upward buoyancy for the whole pump body, the upper end of the pump body floats on the water surface, the water inlet is positioned at a higher position of the water surface in the water tank, and the pump body can be connected with the inner wall of the water tank in a vertical sliding manner through the lifting assembly, so that the water inlet can be always positioned at the higher position of the upper end of the water surface in the pumping process of the pump body.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a suspension assembly;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is an enlarged schematic view of FIG. 2B;
FIG. 5 is a schematic diagram of the mating relationship of the slide plate and the slide rail.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The utility model provides a lifting type water pump, includes pump body 1, the water inlet setting of pump body 1 is in the bottom, its characterized in that: the water inlet is provided with a suspension assembly, the suspension assembly is used for floating the pump body 1, and the side surface of the pump body 1 is connected with the inner wall of the pool in a vertically sliding way through a lifting assembly;
the suspension assembly comprises an outer shell, the water inlet is formed in the outer shell, a plurality of first filtering holes 15 are formed in the side face of the outer shell, and the bottom of the outer shell is connected with a suspension.
As shown in fig. 1, a pump body 1 is a submersible pump in the prior art, a water inlet is arranged at the bottom, a water outlet is arranged at the top, and a hose is connected to the water outlet so as to facilitate the movement of the pump body 1, when the pump body 1 works, water in a water tank is pumped upwards to an output port, and the water tank can be a sewage tank, a dam, a pond and other places needing to be pumped in the prior art.
The suspension assembly provides upward buoyancy for the whole pump body 1, the upper end of the pump body 1 floats on the water surface, the water inlet of the pump body 1 is positioned at a higher position of the water surface in the water tank so as to facilitate water pumping, meanwhile, the water inlet of the pump body 1 can be always positioned at a higher position of the upper end of the water surface in the water pumping process of the pump body 1 because the pump body 1 is connected with the inner wall of the water tank in a vertically sliding way through the lifting assembly.
Further, the shell body comprises a plurality of hollow rings 3 which are of hollow structures, the hollow rings 3 are distributed in the vertical direction, the hollow rings 3 are sleeved on the pump body 1, two adjacent hollow rings 3 are fixedly connected through an annular plate 2, a first filter hole 15 is formed in the side face of the annular plate 2, the annular plate 2 is obliquely arranged, and the diameters of the hollow rings 3 are gradually increased from top to bottom.
As shown in fig. 2, the hollow ring 3 of the hollow structure provides a certain buoyancy, and the hollow rings 3 and the annular plate 2 together form a hollow funnel-shaped structure, and the top end face is small, and the bottom end face is large.
Further, the detachable filter sleeve 17 that is connected with in suspension body top, filter sleeve 17 is hollow structure, its top fixed connection pump body 1's water inlet, and with the water inlet intercommunication, filter sleeve 17 sets up in the shell body, filter sleeve 17 side is provided with a plurality of second filtration pore 16, the diameter of second filtration pore 16 is less than first filtration pore 15.
Specifically, the water inlet sets up in filtering sleeve 17, and second filtration pore 16 compares first filtration pore 15, can filter less impurity, and during the concrete implementation, first filtration pore 15 filters debris of big or small such as plastic bottle, and second filtration pore 16 can filter impurity such as fine stone, and double-deck filtration has guaranteed the stability of pump body 1 long-term use.
Further, a protruding portion 18 is arranged on the top of the suspension body, external threads are arranged on the protruding portion 18, internal threads matched with the filtering sleeve 17 are arranged on the filtering sleeve 17, and the protruding portion 18 is in threaded connection with the filtering sleeve 17.
The boss 18 is integrally formed with the inner housing 19, and the suspension body can be mounted by rotating the inner housing 19.
Further, the suspension body comprises an inner shell 19 detachably connected with the outer shell, the protruding portion 18 is arranged at the top of the inner shell 19, the inner shell 19 is provided with a cavity with a downward opening, the opening end face of the cavity is connected with the top of the telescopic sleeve 4, the bottom of the telescopic sleeve 4 is fixedly connected with an adjusting plate 20, and the adjusting plate 20 is connected with the inner shell 19 in a height-adjustable mode through an adjusting mechanism.
Specifically, through regulating plate 20 height-adjusting from top to bottom, make flexible cover 4 flexible, the change of height, and then can adjust the inside hollow size of suspension body, and then adjust the buoyancy size of suspension body, finally adjust the height of water inlet, can specifically adjust according to actual conditions when specific implementation, make the water inlet be in the higher position of surface of water all the time.
Further, the adjusting mechanism comprises a screw 5, the adjusting plate 20 is in threaded connection with the screw 5, the screw 5 is vertically arranged, the top of the screw 5 is arranged in the inner shell 19 and is rotatably connected with the inner wall of the inner shell 19, and the bottom of the screw 5 extends out of the adjusting plate 20.
The screw 5 top rotatable through the bearing connects the bottom inner wall of bellying 18, rotates screw 5, can adjust the height of regulating plate 20, specifically, screw 5 bottom fixedly connected with handle to rotate conveniently to screw 5 bottom threaded connection has gland nut 13, gland nut 13 and regulating plate 20 bottom butt, in order to play sealed effect.
Further, the telescopic sleeve 4 has a bellows structure, is hollow, and forms a hollow structure together with the top of the adjusting plate 20 and the inside of the inner housing 19;
the top of the telescopic sleeve 4 is fixedly connected with a connecting ring 22, the connecting ring 22 is provided with an annular groove with an upward opening, the bottom of the inner shell 19 is arranged in the annular groove, and the connecting ring 22 is detachably connected with the inner shell 19.
As shown in fig. 2, the telescopic sleeve 4 is telescopic downwards to a certain length, and the side surface of the telescopic sleeve is of a wavy structure identical to that of a corrugated pipe in the prior art, so that the size of the hollow inside the suspension body can be changed while the telescopic sleeve is telescopic, and the buoyancy can be changed conveniently.
As shown in fig. 3, the connecting ring 22 has a circular ring structure, a sealing ring is arranged between the annular groove and the inner shell 19, a plurality of connecting screws 6 are connected with the side surface of the connecting ring 22 in a threaded manner, and the connecting screws 6 penetrate through the inner shell 19.
In addition, under the action of water pressure, the regulating plate 20 plays a role in maintaining the deformation of the telescopic sleeve 4, so that the telescopic sleeve 4 is prevented from excessively deforming inwards, the regulating plate 20 is also provided with the air release nut 14, and the air release nut 14 is loosened, so that the air pressure inside the suspension body can be maintained stable when the height of the regulating plate 20 is regulated.
Further, the pump further comprises a first fixing ring 21, the first fixing ring 21 is fixedly sleeved on the pump body 1 and located above the outer shell, a plurality of first nuts 23 are fixedly connected to the top of the uppermost hollow ring 3, the first nuts 23 are in threaded connection with first bolts 24, and the first bolts 24 penetrate through the first fixing ring 21.
The first fixing ring 21 is of an annular structure, is fixedly connected with the outer side face of the pump body 1, and the first nuts 23 and the first bolts 24 are distributed in an annular array.
In addition, the inner shell 19 extends downwards from the inside of the hollow ring 3 at the lowest part, a plurality of connecting rods 25 are fixedly arranged on the outer side surface of the lower end of the inner shell 19, the connecting rods 25 are distributed in an annular array, a gap is formed between every two adjacent connecting rods 25, a second bolt 27 penetrates through the connecting rods 25, the second bolt 27 is in threaded connection with a second nut 26, the second nut 26 is fixedly connected with the bottom of the hollow ring 3 at the lowest part, the side surface of the inner shell 19 is of an inclined structure, the upper end is small, the lower end is large, sundries entering from the first filtering holes 15 can move downwards along the inner shell 19, and finally fall down from the gap between the two adjacent connecting rods 25 and are discharged.
Further, the lifting assembly comprises two sliding rails 10 arranged on the inner wall of the water tank, the two sliding rails 10 are arranged side by side, a sliding groove is formed in one opposite side of each sliding rail, a sliding plate 11 is arranged between the two sliding rails 10, protruding blocks are arranged on two sides of each sliding plate 11, the protruding blocks are slidably arranged in the sliding grooves, and the sliding plates 11 are connected with the pump body 1 through supports 12.
Further, the sliding plate 11 is connected with a winch 7, and a connecting rope 8 on the winch 7 is connected with the sliding plate 11.
The vertical setting of slide rail 10 still is provided with take-up pulley 9 on the mount pad of hoist engine 7, and connecting rope 8 cover is on take-up pulley 9, and take-up pulley 9 sets up directly over slide 11, like fig. 1, connecting rope 8 is in the lax state this moment, and slide 11 and pump body 1 can freely slide from top to bottom, and after starting hoist engine 7, connecting rope 8 promotes pump body 1 and rises to the maintenance operation, hoist engine 7 can be manual hoist engine or the electronic hoist engine among the prior art, and connecting rope 8 can be wire rope, and its bottom can be fixed or through couple, rings connection slide 11 top.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications, variations, alterations, substitutions made by those skilled in the art to the technical solution of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (6)
1. The utility model provides a lifting type water pump, includes the pump body (1), the water inlet setting of pump body (1) is in the bottom, its characterized in that: the water inlet is provided with a suspension assembly, the suspension assembly is used for floating the pump body (1), and the side surface of the pump body (1) is connected with the inner wall of the pool in a vertically sliding way through a lifting assembly;
the suspension assembly comprises an outer shell, the water inlet is formed in the outer shell, a plurality of first filtering holes (15) are formed in the side face of the outer shell, and the bottom of the outer shell is connected with a suspension;
the outer shell comprises a plurality of hollow rings (3) with hollow structures, the hollow rings (3) are distributed in the vertical direction, the hollow rings (3) are sleeved on the pump body (1), two adjacent hollow rings (3) are fixedly connected through an annular plate (2), a first filter hole (15) is formed in the side face of the annular plate (2), the annular plate (2) is obliquely arranged, and the diameters of the hollow rings (3) are sequentially increased from top to bottom;
the top of the suspension body is detachably connected with a filter sleeve (17), the filter sleeve (17) is of a hollow structure, the top of the filter sleeve is fixedly connected with a water inlet of the pump body (1) and is communicated with the water inlet, the filter sleeve (17) is arranged in the outer shell, a plurality of second filter holes (16) are formed in the side surface of the filter sleeve (17), and the diameter of each second filter hole (16) is smaller than that of each first filter hole (15);
the top of the suspension body is provided with a protruding part (18), the protruding part (18) is provided with external threads, the filter sleeve (17) is provided with internal threads matched with the protruding part, and the protruding part (18) is in threaded connection with the filter sleeve (17);
the suspension body comprises an inner shell (19) detachably connected with the outer shell, a protruding portion (18) is arranged at the top of the inner shell (19), the inner shell (19) is provided with a cavity with a downward opening, the end face of the opening of the inner shell is connected with the top of a telescopic sleeve (4), the bottom of the telescopic sleeve (4) is fixedly connected with an adjusting plate (20), and the adjusting plate (20) is connected with the inner shell (19) through an adjusting mechanism in a height-adjustable mode.
2. A lifting water pump as claimed in claim 1, wherein: the adjusting mechanism comprises a screw (5), the adjusting plate (20) is in threaded connection with the screw (5), the screw (5) is vertically arranged, the top of the screw (5) is arranged in the inner shell (19) and is rotatably connected with the inner wall of the inner shell (19), and the bottom of the screw (5) extends out of the adjusting plate (20).
3. A lifting water pump as claimed in claim 1, wherein: the telescopic sleeve (4) is of a corrugated pipe structure, is of a hollow structure, and forms a hollow structure together with the top of the adjusting plate (20) and the inside of the inner shell (19);
the telescopic sleeve is characterized in that a connecting ring (22) is fixedly connected to the top of the telescopic sleeve (4), an annular groove with an upward opening is formed in the connecting ring (22), the bottom of the inner shell (19) is arranged in the annular groove, and the connecting ring (22) is detachably connected with the inner shell (19).
4. A lifting water pump as claimed in claim 1, wherein: still include first solid fixed ring (21), the cover that first solid fixed ring (21) is fixed is established pump body (1), and be located shell body top, the top fixedly connected with of the hollow ring (3) that is located the top a plurality of first nuts (23), first nut (23) threaded connection has first bolt (24), first bolt (24) pass first solid fixed ring (21).
5. A lifting water pump as claimed in claim 1, wherein: the lifting assembly comprises two sliding rails (10) arranged on the inner wall of the water tank, the two sliding rails (10) are arranged side by side, sliding grooves are formed in one opposite side of the sliding rails, sliding plates (11) are arranged between the two sliding rails (10), protruding blocks are arranged on two sides of the sliding plates (11), the protruding blocks are slidably arranged in the sliding grooves, and the sliding plates (11) are connected with the pump body (1) through supports (12).
6. The lift water pump of claim 5 wherein: the sliding plate (11) is connected with a winch (7), and a connecting rope (8) on the winch (7) is connected with the sliding plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210121091.9A CN114517792B (en) | 2022-02-09 | 2022-02-09 | Lifting type water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210121091.9A CN114517792B (en) | 2022-02-09 | 2022-02-09 | Lifting type water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114517792A CN114517792A (en) | 2022-05-20 |
| CN114517792B true CN114517792B (en) | 2023-05-12 |
Family
ID=81597639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210121091.9A Active CN114517792B (en) | 2022-02-09 | 2022-02-09 | Lifting type water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114517792B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220412376A1 (en) * | 2021-06-23 | 2022-12-29 | Gustavo Daniel Schraiber | Submersible water pump |
| CN115230887A (en) * | 2022-08-24 | 2022-10-25 | 安徽凯特泵业有限公司 | Lifting centrifugal pump |
| CN115230886A (en) * | 2022-08-24 | 2022-10-25 | 安徽凯特泵业有限公司 | Supporting assembly of centrifugal pump |
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| "漂浮式潜水泵的研究与应用";李登松等;《水泵技术》(第2期);第1-3页 * |
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