CN111749902A - Hydraulic dredger dredge pump with series impellers - Google Patents
Hydraulic dredger dredge pump with series impellers Download PDFInfo
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- CN111749902A CN111749902A CN202010744522.8A CN202010744522A CN111749902A CN 111749902 A CN111749902 A CN 111749902A CN 202010744522 A CN202010744522 A CN 202010744522A CN 111749902 A CN111749902 A CN 111749902A
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- pump
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- blade
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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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
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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
- F04D29/40—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a hydraulic dredge pump of a disposition series impeller, including outer pump casing, big pump cover, small pump cover, pump bladder, front liner plate, back liner plate, impeller, pump shaft, bearing body and seal, outer pump casing, big pump cover, small pump cover, seal enclose into a layer of cavity of outside, pump bladder, front liner plate, back liner plate enclose into a layer of cavity of inside, there is impeller mounted on pump shaft in a layer of cavity of inside, the pump shaft is supported by the bearing body; the impellers comprise impellers with different blade numbers, impellers with different blade wrap angles and a plurality of series of impellers with different outer diameters; the impellers with different blade numbers are 3, 4 and 5; different blade wrap angle impellers having a blade wrap angle between 115 degrees and 195 degrees; the outer diameter of the impeller with different outer diameters is between 0.6 times of the inner diameter of the pump liner and 1.0 time of the inner diameter of the pump liner; the invention realizes more efficient and stable operation of the dredge pump, and has the advantages of strong pertinence of operation working conditions, wide application range, reduction of engineering cost, high construction efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of dredging, and particularly relates to a hydraulic dredger dredge pump provided with a series of impellers.
Background
Along with economic development in recent years, large-scale port construction engineering, channel dredging engineering and sea filling land making engineering projects are more and more, and the requirements on efficient and stable operation of a hydraulic dredge pump are higher and higher in the engineering implementation process. The prior hydraulic dredger dredge pump only has one impeller, and the requirement of engineering is difficult to meet under the new situation of high-efficiency and stable operation requirement.
In the construction process of the hydraulic dredger, the dredging rock soil of the hydraulic dredger continuously changes along with the project area, and the discharge distance is continuously adjusted along with the engineering progress, so that the hydraulic dredger dredge pump cannot adapt to the dredging soil quality and the discharge distance frequently, the dredging efficiency is low, the ship runs unstably, and even the operation is difficult.
In view of the above, in large-scale port construction projects, channel dredging projects, and sea reclamation projects, in order to achieve continuous and efficient operations, it is necessary to develop a hydraulic dredge pump equipped with a series of impellers.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the hydraulic dredge pump provided with the series impellers, which has the advantages of good operation continuity and high production efficiency, meets the efficient operation of different dredging soil qualities and row pitches, reduces the operation risk of the hydraulic dredge, and realizes efficient and continuous dredging and hydraulic filling construction of the whole system.
The invention is realized in this way, a hydraulic dredge pump of a kind of disposition series impeller, including outer pump casing, big pump cover, small pump cover, pump bladder, front liner plate, back liner plate, impeller, pump shaft, bearing block and seal, said outer pump casing, big pump cover, small pump cover, seal enclose into a layer of cavity of outside, said pump bladder, front liner plate, back liner plate enclose into a layer of cavity of inside, there is impeller mounted on pump shaft in a layer of cavity of inside, said pump shaft is supported by the bearing block; the impeller comprises impellers with different blade numbers, impellers with different blade wrap angles and a plurality of series of impellers with different outer diameters.
In the above-described aspect, preferably, the plurality of types of impellers included in the impeller have the same rotation direction.
In the above technical solution, preferably, the impellers with different numbers of blades have three numbers of blades, namely 3, 4 and 5; the impeller with the blade number of 3 is suitable for the condition that the soil mass is conveyed to contain a small amount of large-particle-size rock soil, the impeller with the blade number of 4 is suitable for the condition that the soil mass is conveyed to contain a small amount of medium-particle-size rock soil, and the impeller with the blade number of 5 is suitable for the condition that the soil mass is conveyed to contain only small-particle-size rock soil.
In the above technical solution, preferably, the different blade wrap angle impellers have blade wrap angles between 115 degrees and 195 degrees; the impeller with the smaller blade wrap angle is suitable for the condition that the soil mass contains a large amount of large-particle-size rock soil, the impeller with the medium blade wrap angle is suitable for the condition that the soil mass contains a large amount of medium-particle-size rock soil, and the impeller with the larger blade wrap angle is suitable for the condition that the soil mass only contains small-particle-size rock soil.
In the above technical solution, preferably, the outer diameter of the impeller with different outer diameters is between 0.6 times and 1.0 times of the inner diameter of the pump liner; the impeller with the large outer diameter is suitable for conveying the working condition of the long conveying distance, the impeller with the medium outer diameter is suitable for conveying the working condition of the medium conveying distance, and the impeller with the small outer diameter is suitable for conveying the working condition of the short conveying distance.
In the above technical solution, preferably, the impeller includes a plurality of series of impellers, and the impellers are all the same in size as the screw thread in the screw thread connection of the pump shaft, and have interchangeability.
In the above technical solution, preferably, the impellers comprise a plurality of series of impellers having the same distance from the front blade wall to the rear blade wall.
In the above technical solution, preferably, the impellers of the plurality of series included in the impeller have different numbers of blades, different wrap angles of the blades, and different outer diameters, and are independent from and can intersect with each other.
Compared with the prior art, the invention has the advantages and positive effects that
According to the invention, one impeller in the series of impellers is selected and installed before the mud pump operates according to the soil quality and the conveying row spacing, and the special impeller is used for operation according to the soil quality and the conveying row spacing, so that the mud pump can operate more efficiently and stably, and the mud pump has the advantages of strong pertinence of operation conditions, wide application range, low engineering cost, high construction efficiency and the like; the hydraulic dredge pump with serial impellers can improve the continuity, economy and stability of construction in large port construction engineering, channel dredging engineering and sea filling and land making engineering.
Drawings
FIG. 1 is a cross-sectional view of a hydraulic dredge pump configured with a series of impellers provided by an embodiment of the present invention;
FIG. 2 is a front view of a hydraulic dredge pump configured with a series of impellers provided by an embodiment of the present invention.
In the figure: 1. sucking a liner tube; 2. an impeller; 3. a pump bladder; 4. an outer pump casing; 5. a big pump cover; 6. a small pump cover; 7. a front liner plate; 8. a rear liner plate; 9. a pump shaft; 10. a bearing body; 11. and a sealing body.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
in the description of the present invention, it is to be understood that the terms "front", "back", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1 and 2, an embodiment of the present invention provides a hydraulic dredge pump with a series of impellers, which comprises an outer pump casing, a big pump cover, a small pump cover, a pump liner, a front liner plate, a rear liner plate, an impeller, a pump shaft, a bearing body and a sealing body; the outer pump shell, the large pump cover, the small pump cover and the sealing body enclose an outer layer of cavity, the large pump cover is connected to the outer pump shell through bolts, the small pump cover is connected to the large pump cover through bolts, and the sealing body is sealed between the outer pump shell and the pump shaft; the pump liner, the front lining plate and the rear lining plate enclose an inner layer of cavity, the pump liner is supported by the front lining plate, the rear lining plate and the small pump cover and is fixed on the outer pump shell through bolts, the front lining plate and the rear lining plate are respectively arranged between the impeller and the small pump cover as well as between the impeller and the outer pump shell, the front lining plate comprises a front outer lining plate and a front inner lining plate, the front outer lining plate and the front inner lining plate are fixed on the small pump cover through bolts, the rear lining plate comprises a rear outer lining plate and a rear inner lining plate, and the rear outer lining plate and the rear inner lining plate are; an impeller arranged on the pump shaft is arranged in a layer of cavity inside the pump body, a suction liner tube is arranged at a suction port of the impeller, the suction liner tube is connected to the impeller through a bolt, the impeller is connected to the pump shaft through threads, and the pump shaft is supported by a bearing body; the impeller comprises impellers with different blade numbers, impellers with different blade wrap angles and a plurality of series of impellers with different outer diameters.
Preferably, the impellers comprise a plurality of series of impellers having the same direction of rotation.
Preferably, the impellers with different blade numbers have three blade numbers of 3, 4 and 5; the impeller with the blade number of 3 is suitable for the condition that the soil mass is conveyed to contain a small amount of large-particle-size rock soil, the impeller with the blade number of 4 is suitable for the condition that the soil mass is conveyed to contain a small amount of medium-particle-size rock soil, and the impeller with the blade number of 5 is suitable for the condition that the soil mass is conveyed to contain only small-particle-size rock soil.
Preferably, the different blade wrap angle impeller has a blade wrap angle between 115 degrees and 195 degrees; among them, the impeller with a small blade wrap angle (for example, the blade wrap angle is 115 degrees to 150 degrees) is suitable for the case of transporting the soil containing a large amount of large-particle-size rock soil, the impeller with a medium blade wrap angle (for example, the blade wrap angle is 151 degrees to 175 degrees) is suitable for the case of transporting the soil containing a large amount of medium-particle-size rock soil, and the impeller with a large blade wrap angle (for example, the blade wrap angle is 176 degrees to 195 degrees) is suitable for the case of transporting the soil containing only small-particle-size rock soil.
Preferably, the outer diameter of the impeller with different outer diameters is between 0.6 times of the inner diameter of the pump liner and 1.0 times of the inner diameter of the pump liner; wherein, the impeller that the external diameter is great (for example the external diameter is between 0.9 times pump courage internal diameter ~ 1.0 times pump courage internal diameter) is applicable to the operating mode of carrying longer discharge distance, and the impeller that the external diameter is medium (for example the external diameter is between 0.75 times pump courage internal diameter ~ 0.9 times pump courage internal diameter) is applicable to the operating mode of carrying medium discharge distance, and the impeller that the external diameter is less (for example the external diameter is between 0.6 times pump courage internal diameter ~ 0.75 times pump courage internal diameter) is applicable to the operating mode of carrying shorter discharge distance.
Preferably, the impeller comprises a plurality of series of impellers, and the impellers and the pump shaft are in threaded connection with the same size and have interchangeability.
Preferably, the impeller comprises a plurality of series of impellers having the same distance from the front blade wall to the rear blade wall so as to maintain the same gap with the front lining plate and the rear lining plate.
Preferably, the impeller comprises a plurality of series of impellers, the impellers with different blade numbers, different blade wrap angles and different outer diameters are independent from each other and can intersect with each other, namely, the impeller with the blade number of 3 can have the impellers with different blade wrap angles and different outer diameters, and the same holds true for the impellers with the blade numbers of 4 and 5.
In the aspect of the arrangement and the use condition of the serial impeller 2, the hydraulic dredge pump with the serial impeller needs to select and install a proper impeller according to the dredging quality and the discharge distance of engineering projects before construction. The principle of selecting the impeller is as follows:
1) the blade number of the impeller is selected according to the condition that the dredged soil of the engineering project site contains the largest-scale rock blocks, the selection of the blade number focuses on the problem that whether the large-scale rock blocks block the impeller in the conveying process, and the construction continuity is improved. If the dredged soil contains a certain amount of large-size rock blocks, a 3-blade impeller is selected; if the dredged soil does not contain large-size rock blocks, a 5-blade impeller is selected; if the dredged soil contains a small amount of large-size rock lumps or a certain amount of medium-size rock lumps, a 4-blade impeller is selected.
2) The blade wrap angle of the impeller is selected according to the condition of the grain size of most of the dredged soil in the engineering project, the selection of the blade wrap angle focuses on the problem of the operation efficiency of the dredge pump, and the construction economy is improved. If the grain size of most of the soil is smaller, an impeller with a larger blade wrap angle is selected; if the grain size of most of the soil is larger, an impeller with a smaller blade wrap angle is selected; if the grain size of most of the soil is medium, the impeller with medium blade wrap angle is selected.
3) The outer diameter of the impeller is selected according to the discharge distance required by engineering projects, the selection of the outer diameter focuses on the problem that the service power of the mud pump is matched with the power of the driving machine, the driving machine is prevented from running in an over-power mode, and the construction stability is improved. If the discharging distance is longer, a large-diameter impeller is selected; selecting a small-diameter impeller if the discharge distance is short; if the delivery distance is medium, a medium diameter impeller is selected.
After the engineering soil quality or the discharge distance condition changes, the impeller needs to be reselected according to the principle.
According to the invention, one impeller in the series of impellers is selected and installed before the mud pump operates according to the soil quality and the conveying row spacing, and the special impeller is used for operation according to the soil quality and the conveying row spacing, so that the mud pump can operate more efficiently and stably, and the mud pump has the advantages of strong pertinence of operation conditions, wide application range, low engineering cost, high construction efficiency and the like; the hydraulic dredge pump with serial impellers can improve the continuity, economy and stability of construction in large port construction engineering, channel dredging engineering and sea filling and land making engineering.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A hydraulic dredge pump of the configuration serial impeller, including outer pump casing, big pump cover, small pump cover, pump bladder, front liner plate, back liner plate, impeller, pump shaft, bearing body and seal, the said outer pump casing, big pump cover, small pump cover, seal enclose into the outer cavity of one deck, the said pump bladder, front liner plate, back liner plate enclose into the inner cavity of one deck, there is impeller mounted on pump shaft in the cavity of one deck of insides, the said pump shaft is supported by the bearing body; the impeller is characterized by comprising impellers with different blade numbers, impellers with different blade wrap angles and a plurality of series of impellers with different outer diameters.
2. A hydrodynamic dredge pump of configuring a series of impellers in accordance with claim 1, wherein the impellers comprise a plurality of series of impellers having the same direction of rotation.
3. The hydraulic dredge pump of configuring with serial impellers of claim 1, characterized in that the impellers with different blade numbers have three kinds of 3, 4 and 5; the impeller with the blade number of 3 is suitable for the condition that the soil mass is conveyed to contain a small amount of large-particle-size rock soil, the impeller with the blade number of 4 is suitable for the condition that the soil mass is conveyed to contain a small amount of medium-particle-size rock soil, and the impeller with the blade number of 5 is suitable for the condition that the soil mass is conveyed to contain only small-particle-size rock soil.
4. The hydrodynamic dredge pump of claim 1, where the series of impellers are configured with impellers having different blade wrap angles between 115 degrees and 195 degrees; the impeller with the smaller blade wrap angle is suitable for the condition that the soil mass contains a large amount of large-particle-size rock soil, the impeller with the medium blade wrap angle is suitable for the condition that the soil mass contains a large amount of medium-particle-size rock soil, and the impeller with the larger blade wrap angle is suitable for the condition that the soil mass only contains small-particle-size rock soil.
5. A hydrodynamic dredge pump of configuring a series of impellers in accordance with claim 1, wherein the impellers of different outer diameters have outer diameters between 0.6 and 1.0 times the inner diameter of the pump liner; the impeller with the large outer diameter is suitable for conveying the working condition of the long conveying distance, the impeller with the medium outer diameter is suitable for conveying the working condition of the medium conveying distance, and the impeller with the small outer diameter is suitable for conveying the working condition of the short conveying distance.
6. A hydrodynamic dredge pump of claim 1 where the impeller comprises a plurality of series of impellers, with the same size and interchangeability as the screw thread of the pump shaft screw connection.
7. A hydrodynamic dredge pump of configuring a series of impellers in claim 1, where the impellers comprise a plurality of series of impellers having the same front vane wall to back vane wall distance.
8. A hydrodynamic dredge pump of configuring series of impellers in claim 1, characterized in that the impellers comprise a plurality of series of impellers with different numbers of blades, different wrap angles of blades, different outer diameters independent and criss-crossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744522.8A CN111749902A (en) | 2020-07-29 | 2020-07-29 | Hydraulic dredger dredge pump with series impellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744522.8A CN111749902A (en) | 2020-07-29 | 2020-07-29 | Hydraulic dredger dredge pump with series impellers |
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| CN111749902A true CN111749902A (en) | 2020-10-09 |
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| CN202010744522.8A Pending CN111749902A (en) | 2020-07-29 | 2020-07-29 | Hydraulic dredger dredge pump with series impellers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594210A (en) * | 2021-02-08 | 2021-04-02 | 齐齐哈尔欣日机械设备制造有限公司 | Embedded wear-resistant tile structure used in sand pump |
| CN113217399A (en) * | 2021-05-11 | 2021-08-06 | 中交广州航道局有限公司 | Real-time intelligent monitoring system for abrasion of components in dredge pump |
-
2020
- 2020-07-29 CN CN202010744522.8A patent/CN111749902A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594210A (en) * | 2021-02-08 | 2021-04-02 | 齐齐哈尔欣日机械设备制造有限公司 | Embedded wear-resistant tile structure used in sand pump |
| CN112594210B (en) * | 2021-02-08 | 2024-05-03 | 齐齐哈尔欣日机械设备制造有限公司 | Mosaic type wear-resistant tile structure for sand pump |
| CN113217399A (en) * | 2021-05-11 | 2021-08-06 | 中交广州航道局有限公司 | Real-time intelligent monitoring system for abrasion of components in dredge pump |
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