CN219101608U - Non-blocking pulp pump - Google Patents
Non-blocking pulp pump Download PDFInfo
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- CN219101608U CN219101608U CN202220238004.3U CN202220238004U CN219101608U CN 219101608 U CN219101608 U CN 219101608U CN 202220238004 U CN202220238004 U CN 202220238004U CN 219101608 U CN219101608 U CN 219101608U
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- impeller
- spiral
- pump
- spiral impeller
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Abstract
The utility model discloses a non-blocking pulp pump, which belongs to the technical field of multiphase flow pumps and comprises a pump body and a pump shaft positioned in the pump body, wherein a spiral impeller and a space guide vane are respectively arranged on the pump shaft, the spiral impeller is divided into a spiral section and a centrifugal section, a plurality of balance holes are uniformly distributed in the circumferential direction at the same height of a hub of the spiral impeller, and an open structure of the spiral impeller enables an open spiral channel to be formed between the impeller and the inner wall of the pump body, so that the trafficability of particles in the impeller is greatly improved while energy is obtained by a solid-liquid two-phase medium to be conveyed. Compared with the traditional multi-blade closed impeller structure, the scheme provided by the utility model optimizes the flow of liquid phase and particles in the pump, fundamentally solves the problem of blockage when the pulp pump conveys solid-liquid two-phase flow containing particles, and in addition, the balance holes arranged on the impeller can effectively balance the axial pressure generated in the rotating process of the spiral impeller, thereby ensuring the high-efficiency and stable operation of the whole machine.
Description
Technical Field
The utility model relates to the technical field of multiphase flow pumps, in particular to a non-blocking pulp pump which can inhibit blockage of a pump channel and improve operation stability.
Background
The ore particles in the form of multi-metal nodules in the deep sea mining long-distance conveying system are coarse particles with the particle size of millimeter level to centimeter level, the deep sea mining long-distance conveying system has the characteristic of high concentration, and the flow structure of the coarse particle solid-liquid two-phase flow composed of the ore particles and the seawater has the characteristic of complex space-time coupling. The deep sea pulp pump is used as the most core power equipment in the vertical hydraulic lifting system for deep sea mining, and the problem of pump channel blockage is very easy to occur in the pulp backflow process during forward conveying and emergency shutdown of pulp, so that the steep drop of the pump performance is induced, and the safe and reliable operation of the mining system is seriously affected.
Disclosure of Invention
The technical task of the utility model is to provide a non-blocking pulp pump aiming at the defects of the prior art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a no jam pulp pump, includes the pump body to and be located the pump shaft in the pump body, wherein be equipped with screw impeller and space stator respectively on the pump shaft, screw impeller divide into screw section and centrifugal section screw impeller wheel hub is evenly provided with a plurality of balance holes in the circumferencial direction of same altitude department.
Further improvement: the number of the balance holes is 6, and the radius of the balance holes is R 0 The hub radius of the spiral impeller is R 1 The center of the balance hole is spaced from the center of the spiral impeller by H 0 R is then 0 ＝1/15R 1 ，H 0 ＝1/3R 1 。
Further improvement: the back of the spiral impeller is provided with a cavity, and the balance hole is communicated with the cavity.
The utility model has the advantages that: through the spiral impeller arranged at the inlet of the pump, the spiral section mainly plays a role in energizing fluid and particles, conveyed media are contacted with the conical hub body through the impeller suction inlet, energy is obtained under the rotation acting of the spiral impeller, and the energy is thrown out tangentially at the centrifugal section of the spiral impeller. Compared with the traditional multi-blade centrifugal impeller structure, the special impeller structure provided by the utility model greatly optimizes the flow of liquid phase and particles in the pump, fundamentally solves the problem of blockage of the pulp pump, and meanwhile, the arrangement of the impeller balance holes can effectively balance the axial pressure generated in the rotating process of the spiral impeller, so that the high-efficiency and stable operation of the whole machine is ensured.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic structural view of the screw impeller of the present utility model.
FIG. 3 is a schematic view of the position structure of the balance hole of the present utility model.
FIG. 4 is a schematic structural view of the spatial vane of the present utility model.
Detailed Description
The present utility model will be described in detail below with reference to the drawings attached to the specification.
As shown in the figure, the non-blocking pulp pump comprises a pump body 1 and pump shafts 2 positioned in the pump body 1, wherein the pump shafts 2 are respectively provided with a spiralThe spiral impeller 3 is divided into a spiral section 31 and a centrifugal section 32, and a plurality of balance holes 5 are uniformly formed in the circumferential direction of the same height of the hub of the spiral impeller 3; the number of the balance holes 5 is 6, and the radius of the balance holes 5 is R 0 The hub radius of the spiral impeller 3 is R 1 The center of the balance hole 5 is spaced from the center of the helical impeller 3 by a height H 0 R is then 0 ＝1/15R 1 ，H 0 ＝1/3R 1 The method comprises the steps of carrying out a first treatment on the surface of the A cavity 6 is arranged on the back surface of the spiral impeller 3, and the balance hole 5 is communicated with the cavity 6.
The working principle is as follows: during operation, the conveyed medium is sucked through the inlet of the pump body 1, at the moment, the spiral section 31 of the spiral blade 3 rotates to apply work and is thrown out tangentially at the centrifugal section 32 of the spiral impeller 3, and an open spiral channel is formed between the spiral impeller 3 and the cover plate on the inner wall of the pump body 1 due to the open structure of the spiral impeller 3, so that the trafficability of particles in the impeller is greatly improved. Compared with the traditional multi-blade centrifugal impeller structure, the flow of liquid phase and particles in the pump is optimized, and the problem of blockage of the pulp pump is fundamentally solved.
Then, since the balance holes 5 are formed in the screw impeller 3, when the liquid collides with the front surface of the screw impeller 3 in the process of conveying the medium, a part of the liquid enters the cavity 6 through the space between the balance holes 5, so that the impact force on the front surface of the screw impeller 3 is reduced, the rest of the liquid is conveyed to the space guide vane 4 area along the screw impeller 3, and when the liquid passes between the screw impeller 3 and the space guide vane 4, a part of high-energy liquid enters the cavity 6 from the gap between the screw impeller 3 and the space guide vane 4, so that the leftward movement counter force of the screw impeller 3 is formed, and the impact force on the front surface of the screw impeller 3 is mutually offset, so that the stress balance of the screw impeller 3 in the axial direction is ensured.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (3)
1. The utility model provides a no jam pulp pump, includes the pump body to and be located the pump shaft in the pump body, its characterized in that: the pump shaft is respectively provided with a spiral impeller and a space guide vane, the spiral impeller is divided into a spiral section and a centrifugal section, and a plurality of balance holes are uniformly formed in the circumferential direction of the same height of the spiral impeller hub.
2. A non-clogging pulp pump as claimed in claim 1, wherein: the number of the balance holes is 6, and the radius of the balance holes is R 0 The hub radius of the spiral impeller is R 1 The center of the balance hole is spaced from the center of the spiral impeller by H 0 R is then 0 ＝1/15R 1 ，H 0 ＝1/3R 1 。
3. A non-clogging pulp pump according to claim 1 or 2, characterized in that: the back of the spiral impeller is provided with a cavity, and the balance hole is communicated with the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220238004.3U CN219101608U (en) | 2022-01-28 | 2022-01-28 | Non-blocking pulp pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220238004.3U CN219101608U (en) | 2022-01-28 | 2022-01-28 | Non-blocking pulp pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219101608U true CN219101608U (en) | 2023-05-30 |
Family
ID=86462947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220238004.3U Active CN219101608U (en) | 2022-01-28 | 2022-01-28 | Non-blocking pulp pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219101608U (en) |
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2022
- 2022-01-28 CN CN202220238004.3U patent/CN219101608U/en active Active
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