CN212563657U - Anti-blocking anti-silting and anti-abrasion ore pulp conveying pump with self-cleaning function - Google Patents
Anti-blocking anti-silting and anti-abrasion ore pulp conveying pump with self-cleaning function Download PDFInfo
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- CN212563657U CN212563657U CN202020600747.1U CN202020600747U CN212563657U CN 212563657 U CN212563657 U CN 212563657U CN 202020600747 U CN202020600747 U CN 202020600747U CN 212563657 U CN212563657 U CN 212563657U
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Abstract
The utility model relates to a prevent stifled anti-siltation ore pulp delivery pump that resistance to wears with self-cleaning function, including ore pulp delivery pump main part, high-pressure clear water auxiliary device, the ore pulp delivery pump main part comprises submersible motor and multistage centrifugal pump, and every work intracavity portion of multistage centrifugal pump is equipped with high pressure water drainage structure, and high pressure water drainage structure passes through the high pressure water access connection on the working chamber high pressure clear water auxiliary device provides clean sea water by high pressure clear water auxiliary device, injects into multistage centrifugal pump's every work intracavity portion through high pressure water inlet, forms local high pressure rivers in the high pressure water drainage structural zone region of working chamber, prevents the siltation behind the jam jamming and the pump stop among the ore pulp transportation process to alleviate the impact wear of solid particle to component surface. The utility model discloses an easy jam siltation, easy jamming, the easy wearing and tearing scheduling problem that the ore pulp delivery pump can effectively be solved and the ore pulp delivery pump exists always increases substantially improve equipment life and reliability.
Description
Technical Field
The utility model relates to an ore pulp delivery pump for deep sea mining, especially an ore pulp delivery pump that resistance to wears that prevents blocking up that possesses the self-cleaning function prevents silting up.
Background
The vast seabed contains abundant strategic metal resources, and at present, international Shanghai mining commercialization is seen, and exploration application of international seabed mining areas and exploitation of deep sea mining areas are rapidly heated.
As shown in fig. 1, the deep sea mining system is comprised of a subsea concentrator 20, a slurry fluid lift conveyor system, and a surface mining vessel 21. The pulp transfer pump 22 is the core device.
As shown in fig. 2, all the existing slurry pumps developed in various countries in the world have the problems that the slurry pumps are easy to block and block during operation, wear, silting during pump stop, and the like, which are difficult to solve, and the main reason for causing the problems is that the working medium of the slurry pumps is seawater (called slurry) containing ore solid particles. In the actual mining operation process, in order to ensure the economy of deep-sea mining, the diameter of ore particles in ore pulp is generally more than 10mm, even reaches 50mm, the concentration of the ore in the ore pulp generally reaches about 10%, and during the conveying process of the high-concentration large-particle solid-liquid two-phase flow, firstly, the solid particles can cause great abrasion to the inner working surface of a pump body and the surface of an impeller along with the collision impact of liquid; secondly, in the operation process, ore particles can easily enter gap positions of an inlet and outlet opening ring, a water bearing and the like of an impeller of the ore pulp delivery pump, so that the pump is blocked; thirdly, when the pump is stopped, the fluid velocity gradually decreases, solid particles in the slurry will sink and pool in the working chamber of the slurry delivery pump, and when the pump is started again, jamming and abrasion will occur.
The prior pulp transfer pump mainly has the following problems:
1. in the process of conveying the ore pulp, the collision impact caused by solid particles in the flow of the following liquid can cause great abrasion to the inner working surface of the pump body and the surface of the impeller;
2. in the operation process, ore particles easily enter gap parts such as an inlet and outlet opening ring of an impeller of the ore pulp delivery pump, a water lubricating bearing and the like to cause the blockage and clamping stagnation of the pump;
3. when the pump is stopped, the flow speed of the ore pulp is gradually reduced, solid particles in the ore pulp are deposited in the working cavity of the ore pulp delivery pump, and when the pump is started again, the jamming and abrasion are easy to generate.
Research work of the pulp conveying pump is carried out in all countries around the world, in the period, various forms such as an axial flow pump, a mixed flow pump, a diaphragm pump and a multistage centrifugal pump are adopted, through years of research and demonstration and experimental analysis, the multistage centrifugal pump is finally adopted, in order to solve the problems of blockage, siltation and abrasion and the like, the measures such as blade number optimization (adopting a 3 or 4 blade impeller), blade type optimization and thickening, impeller inlet beveling, inclined flow channels, a guider with space guide vanes and the like are mainly adopted aiming at the multistage centrifugal pump at present, and the passing performance (blockage, blockage and siltation prevention) and the abrasion resistance of the pulp conveying pump are improved. However, from the results of various laboratories and offshore tests, the problems of blockage, stagnation, silting and abrasion of the slurry transfer pump are improved, but the problems are not substantially solved, and become one of the bottlenecks that deep-sea mining cannot be commercialized. Therefore, there is an urgent need to develop a pulp delivery pump that can better solve the problems of clogging, silting and abrasion.
Disclosure of Invention
The utility model provides a prevent stifled anti-siltation ore pulp delivery pump that resistance to wears with self-cleaning function, aim at ore pulp delivery pump high pressure water drainage structural design and high-pressure clear water auxiliary device design, it flows to form local high-pressure clear water at ore pulp delivery pump main part working chamber inside, the easy jam, the jamming, siltation and the part wearing and tearing scheduling problem of ubiquitous among the ore pulp delivery pump operation process for the present deep sea mining are improved by a wide margin to promote ore pulp delivery pump life and economic nature comprehensively.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an anti-clogging and anti-silting pulp delivery pump that resistance to wears with self-cleaning function, includes pulp delivery pump main part, high-pressure clear water auxiliary device, the pulp delivery pump main part comprises submersible motor and multistage centrifugal pump, every working chamber inside of multistage centrifugal pump is equipped with high-pressure water drainage structure, and high-pressure water drainage structure passes through the high-pressure water access connection on the working chamber high-pressure clear water auxiliary device provides clean sea water by high-pressure clear water auxiliary device, injects into every working chamber of multistage centrifugal pump inside through high-pressure water inlet, forms local high-pressure rivers in the high-pressure water drainage structure area of working chamber, prevents the siltation behind the jam jamming and the pump stop among the pulp transportation process to alleviate the impact wear of solid particle to component surface.
Furthermore, the number, the size and the arrangement mode of outlet water conveying pipelines of the high-pressure clear water auxiliary device are matched with a high-pressure water drainage structure in a working cavity of the ore pulp conveying pump main body.
Furthermore, a plurality of drainage slits with the width of 2-3 mm distributed in parallel are respectively arranged on the working surface near the inlet edge of the impeller, the working surface near the outlet edge of the impeller and the working surface near the volute partition tongue in the ore pulp delivery pump main body, and high-pressure water is sprayed through the slits to weaken the impact of particles on blades.
Further, the high-pressure clear water auxiliary device is arranged on the shell of the ore pulp conveying pump main body and is communicated with the front cover plate cavity and the rear cover plate cavity of the ore pulp conveying pump main body 1 through a high-pressure water conveying pipeline.
The utility model has the advantages that:
the utility model discloses a pulp delivery pump that resistance to siltation is prevented to stifled that possesses self-cleaning function is resistance to wears to wear combines together through the high pressure water drainage structure and the external high-pressure clear water auxiliary device of pulp pump delivery pump main part, pours into the specific position of main part work intracavity with the clean sea water of high pressure into, can produce following beneficial effect:
1. high-pressure water in the working cavity of the ore pulp delivery pump is introduced to form local high-pressure water flow at a designated position, so that impact of ore particles on the inner surface of the working cavity of the ore pulp delivery pump and the surface of a blade is blocked and buffered, and the condition of over-fast abrasion of components of the ore pulp delivery pump is effectively improved;
2. high-pressure water introduced into the working cavity of the ore pulp delivery pump forms local high-pressure water flow at a designated position, so that ore particles and other impurities can be effectively prevented from entering dynamic and static gaps such as inlet and outlet port rings of an impeller of the ore pulp delivery pump, water lubricated bearings and the like, and the problems of blockage, clamping stagnation, over-fast abrasion of the port rings and the like existing in the main body of the ore pulp delivery pump all the time are solved;
3. the local high-pressure water flow formed by the high-pressure water introduced into the working cavity of the ore pulp delivery pump can automatically clean ore particles deposited when the main body of the ore pulp delivery pump stops running, and the blockage grinding generated when the pump is restarted is effectively prevented.
Generally, the utility model discloses a possess the self-cleaning function prevent stifled jam anti-silting ore pulp delivery pump that resistance to wears can effectively promote the life of pump, reduce use cost, improve the economic nature and the reliability of deep sea mining operation greatly.
Drawings
FIG. 1 is a schematic illustration of deep sea mining;
FIG. 2 is a schematic illustration of the deposition of mineral particles and wear of flow components;
FIG. 3 is a sectional view of the structure of the anti-clogging, anti-silting and anti-abrasion pulp delivery pump of the present invention;
FIG. 4 is a sectional view of the impeller structure;
figure 5 is a cross-sectional view of a volute structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 3, the anti-blocking, anti-silting and anti-abrasion pulp conveying pump with the self-cleaning function for the deep sea mining comprises a pulp conveying pump main body 1 and a high-pressure clean water auxiliary device 2. The ore pulp delivery pump main body 1 mainly comprises a submersible motor 3 and a multistage centrifugal pump 4, a working cavity of the ore pulp delivery pump, namely a front cover plate cavity 5 and a rear cover plate cavity 6 in the multistage centrifugal pump, is designed with a high-pressure water drainage structure 7, and a plurality of paths of high-pressure water drainage structures 7 are arranged on the rear cover plate cavity 6; the high-pressure clear water auxiliary device 2 is a high-pressure centrifugal pump and mainly comprises a submersible motor 8, a centrifugal pump 9 and a multi-path high-pressure water conveying pipeline 10. The high-pressure clear water auxiliary device 2 is arranged on the shell of the ore pulp delivery pump main body 1, and is communicated with the front cover plate cavity 5 and the rear cover plate cavity 6 of the ore pulp delivery pump main body 1 by utilizing a high-pressure water delivery pipeline 10 thereof to inject high-pressure seawater into a specific position in the cavities.
Aiming at the internal structural characteristics of a main body working cavity of the ore pulp conveying pump, namely a multistage centrifugal pump, the actual conditions of specific parts such as dynamic and static gaps causing clamping stagnation of solid particles easily when the pump runs and impeller back deposition caused by particle deposition easily when the pump stops are analyzed, a high-pressure water drainage structure 7 in the working cavity is designed, and the number and the positions of high-pressure cleaning seawater inlets are determined. The high-pressure water drainage structure 7 can be structurally adjusted according to the actual impeller stage number so as to meet the working requirement of the multi-stage pump set.
The high-pressure water drainage structure 7 in the working cavity of the main body of the ore pulp delivery pump needs to determine the size, shape (circular, rectangular, triangular and the like) and inlet angle of a drainage inlet according to pressure analysis of media in the main body of the ore pulp delivery pump, solid particle flow track analysis, impact analysis of particles on movable and static parts and the like.
The high-pressure clear water auxiliary device is installed outside the ore pulp delivery pump main body and is connected with the ore pulp delivery pump through a water delivery pipeline, the pressure of clean seawater which can be provided needs to be determined according to the internal pressure of the working cavity of the ore pulp delivery pump, and water flow introduced by the high-pressure clear water auxiliary device can form high-pressure water flow at a specific position inside the working cavity. The number, the size and the like of high-pressure water conveying pipelines at the outlet of the high-pressure clear water auxiliary device are determined according to the requirements of a high-pressure water drainage structure of a working cavity of the main body of the ore pulp conveying pump.
As shown in figures 4 and 5, a plurality of flow guide slits with the width of 2-3 mm are arranged on the working surface 11 near the inlet edge of the impeller, the working surface 12 near the outlet edge of the impeller and the working surface 13 near the volute partition tongue, and the slits spray high-pressure water to weaken the impact of particles on blades.
The ore pulp delivery pump is mainly used for delivering an ore pulp medium containing ore particles, when the ore pulp delivery pump runs, the ore particles can form impact abrasion on the inner surface of a working cavity and pump blades of the ore pulp delivery pump, the high-pressure clear water auxiliary device can buffer high-pressure cleaning water flow delivered to a specific position, the impact abrasion of the ore particles on the inner surface of the working cavity and the surfaces of the pump blades of the ore pulp delivery pump can be effectively relieved, moving and static parts are protected, and the service life and the reliability of the ore pulp delivery pump are improved; meanwhile, after high-pressure seawater is introduced into the internal clearance of the ore pulp delivery pump main body, the positive pressure blocking effect is achieved, ore particles and impurities can be effectively prevented from entering the dynamic and static clearances, and the problems of blockage and blockage, too fast wear of a mouth ring and the like existing in the ore pulp delivery pump main body all the time are solved; ore pulp delivery pump main part is when the shutdown, and the siltation can be subsided to the ore granule inside the working chamber, can produce the jamming when restarting, and the aggravation wearing and tearing, the high-pressure clear water of introducing the working chamber play the washing effect, and the siltation of ore granule when can effectively preventing to stop the pump.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention, all without departing from the contents of the technical solution of the present invention.
Claims (4)
1. The utility model provides an anti-clogging and anti-silting pulp delivery pump that resistance to wears with self-cleaning function, includes pulp delivery pump main part, high-pressure clear water auxiliary device, the pulp delivery pump main part comprises submersible motor and multistage centrifugal pump, its characterized in that: inside every work chamber of multistage centrifugal pump is equipped with high pressure water drainage structure, and high pressure water drainage structure passes through the high pressure water inlet connection on the work chamber high pressure clear water auxiliary device provides clean sea water by high pressure clear water auxiliary device, injects into every work intracavity portion of multistage centrifugal pump through high pressure water inlet, forms local high-pressure rivers in the high pressure water drainage structure region of work chamber, prevents the siltation behind jam jamming and the stop pump among the ore pulp transportation process to alleviate the impact wear of solid particle to component surface.
2. The anti-clogging anti-silting anti-abrasion pulp transfer pump with self-cleaning function according to claim 1, characterized in that: the number, the size and the arrangement mode of outlet water conveying pipelines of the high-pressure clear water auxiliary device are matched with a high-pressure water drainage structure in a working cavity of the ore pulp conveying pump main body.
3. The anti-clogging anti-silting anti-abrasion pulp transfer pump with self-cleaning function according to claim 1, characterized in that: a plurality of drainage slits with the width of 2-3 mm distributed in parallel are respectively formed in the working surface near the inlet edge of the impeller, the working surface near the outlet edge of the impeller and the working surface near the volute partition tongue in the ore pulp delivery pump main body, and high-pressure water is sprayed through the slits to weaken the impact of particles on blades.
4. The anti-clogging anti-silting anti-abrasion pulp transfer pump with self-cleaning function according to claim 1, characterized in that: the high-pressure clear water auxiliary device is arranged on the shell of the ore pulp conveying pump main body and is communicated with the front cover plate cavity and the rear cover plate cavity of the ore pulp conveying pump main body 1 through a high-pressure water conveying pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020600747.1U CN212563657U (en) | 2020-04-20 | 2020-04-20 | Anti-blocking anti-silting and anti-abrasion ore pulp conveying pump with self-cleaning function |
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| CN202020600747.1U CN212563657U (en) | 2020-04-20 | 2020-04-20 | Anti-blocking anti-silting and anti-abrasion ore pulp conveying pump with self-cleaning function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513486A (en) * | 2021-03-19 | 2021-10-19 | 四川宏华石油设备有限公司 | Pump unit for lifting ore pulp in sea, combined structure and mining lifting system |
| CN114076104A (en) * | 2021-05-11 | 2022-02-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Wear-resistant centrifugal mud pump |
-
2020
- 2020-04-20 CN CN202020600747.1U patent/CN212563657U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513486A (en) * | 2021-03-19 | 2021-10-19 | 四川宏华石油设备有限公司 | Pump unit for lifting ore pulp in sea, combined structure and mining lifting system |
| CN113513486B (en) * | 2021-03-19 | 2023-08-11 | 四川宏华石油设备有限公司 | Pump unit for lifting ore pulp in sea, combined structure and mining lifting system |
| CN114076104A (en) * | 2021-05-11 | 2022-02-22 | 中交疏浚技术装备国家工程研究中心有限公司 | Wear-resistant centrifugal mud pump |
| CN114076104B (en) * | 2021-05-11 | 2023-12-05 | 中交疏浚技术装备国家工程研究中心有限公司 | Wear-resistant centrifugal mud pump |
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