Air inlet angle adjustable multi-stage series air lift pump

Abstract

The invention belongs to the technical field of lift pumps, and discloses an air inlet angle adjustable multi-stage series pneumatic lift pump which comprises a booster pump on the upper portion and an air inlet adjustable pneumatic pump on the lower portion. According to real application requirements, the booster pump can be connected with the main pump and the lifting pipeline through bolts, multi-stage series connection is achieved, and a compact structure is formed. The booster pump is composed of the outer pump body, the pump body, the auxiliary air inlet cavity and the like, formation of an annular flow structure can be reduced, and the efficiency of the pneumatic lift pump is improved. The main pump comprises an upper pump body, a connecting flange plate, an air inlet sleeve, a lower pump body and other assemblies, and the smooth working process is achieved through coaxial arrangement. The booster pump and the main pump are both made of galvanized iron sheets, and good corrosion resistance is achieved. Compared with the prior art, the device has the advantages of improved efficiency, simple and reliable structure, adjustable design, good corrosion resistance and the like. The pneumatic lifting pump has wide application prospects in the fields of ocean mining, river channel dredging and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of lift pumps, and in particular relates to a multi-stage series pneumatic lift pump with adjustable air intake angle. Background Art

[0002] Pneumatic lift pump is a common equipment used in the fields of marine mining, river dredging, etc. It mainly uses compressed air as a conveying medium to pump liquids or solids. Traditional pneumatic lift pumps mainly rely on buoyancy to achieve slurry transportation. They are widely used because of their simple structure, reliable operation, and wide adaptability. However, traditional pneumatic lift pumps have limitations such as poor liquid-solid mass transfer capacity in the pipe during the lifting process, which to a certain extent hinders the performance improvement of pneumatic lift pumps. In response to these problems, this patent proposes a technology called "multi-stage air intake adjustable pneumatic lift pump". This technology has been improved and innovated on the basis of traditional pneumatic lift pumps, aiming to improve the performance and efficiency of pneumatic lift pumps.

[0003] At present, the air intake methods of air lift pumps mainly include radial intake, axial intake and two-way compound intake. The axial intake method leads to annular flow structure, which reduces the efficiency of the pump; although the radial intake method can delay the formation of annular flow, it will bring about a large pressure drop loss and low efficiency; the two-way intake method combines the advantages and is helpful for medium intake conditions, but it cannot suppress the formation of annular flow under high intake conditions, and the efficiency is still low.

[0004] Through the above analysis, the problems and defects of the prior art are as follows:

[0005] 1. Annular flow structure problem: In the axial air intake mode, an annular flow structure is easily formed, which will reduce the efficiency of the pump. The annular flow structure causes uneven flow of slurry in the pipe, thus affecting the efficiency and stability of the pump.

[0006] 2. Pressure drop loss problem: In the radial air intake method, although the formation of annular flow can be delayed to a certain extent, it will also cause a large pressure drop loss, which will reduce the efficiency of the pump.

[0007] 3. Limitations of the two-way compound intake method: Although the two-way compound intake method combines the advantages of radial intake and axial intake, which is helpful for medium intake conditions, it cannot effectively suppress the formation of annular flow under high intake conditions, so its efficiency is still low.

[0008] 4. Mass transfer capacity issues during the lifting process: Traditional pneumatic lifting pumps have poor liquid-solid mass transfer capacity during the lifting process, which results in low lifting efficiency and hinders the performance improvement of the pump.

[0009] These problems need to be solved. In particular, how to improve the efficiency of the air lift pump, how to suppress the formation of annular flow, how to reduce pressure drop loss, and how to improve the liquid-solid mass transfer capacity are all key issues that need to be urgently solved in the current air lift pump technology. Summary of the invention

[0010] In view of the problems existing in the prior art, the present invention provides a multi-stage series air lift pump with adjustable air intake angle.

[0011] The present invention is implemented as follows: a multi-stage series air lift pump with adjustable air intake angle, the core innovations of which can be summarized as follows:

[0012] 1. Multi-stage series design: This design enables the pump to have a higher lifting capacity. By working in series with multiple pumps, a greater gas lifting height can be achieved.

[0013] 2. Adjustability of air intake angle: By changing the air intake angle, the working performance of the pump can be flexibly adjusted and optimized to adapt to various working environments and needs.

[0014] 3. Connection design between relay pump and main pump: This design makes the assembly, disassembly and maintenance of the pump simple and convenient, and is also beneficial to improving the working stability and life of the pump.

[0015] 4. Intake sleeve with multiple through holes: This design helps to improve the intake efficiency and stability of the pump, thereby improving the overall working performance of the pump.

[0016] Furthermore, it includes a relay pump at the upper part and an adjustable air intake pneumatic pump (main pump) at the lower part; an outer pump body of the relay pump, a compressed air injection port of the relay pump, a pump body of the relay pump, an auxiliary air intake chamber of the relay pump, and a bottom end of the relay pump; the relay pump is connected to the main pump, and the main pump is characterized by: an upper pump body, a connecting flange, an air intake sleeve, a lower cavity, a main air intake chamber, and a lower pump body; a plurality of through holes are respectively provided on the air intake sleeve; the relay pump and the main pump are connected in sequence, and the bottom end of the relay pump and the upper pump body, the connecting flange and the lower cavity, and the lower cavity and the lower pump body are connected by bolts, which include bolts, gaskets, and nuts; a first through hole and a second through hole are respectively provided on the pump body and the lower cavity.

[0017] Furthermore, the outer pump body cooperates with the relay pump body to form an annular auxiliary air intake buffer chamber, and the compressed air enters the auxiliary air intake chamber through the first through hole for buffering and is output at a uniform speed through the injection port; the outer pump body of the relay pump is connected to the bottom end of the relay pump by welding; the relay pump body and the bottom end of the relay pump are matched in an embedded manner, and the matching part is connected by a sealing ring; the bottom end of the relay pump is connected to the main pump by bolts and sealing gaskets; the outer pump body of the relay pump, the relay pump body and the main pump are all coaxially arranged.

[0018] Furthermore, the upper pump body, air intake sleeve, lower cavity and lower pump body are all coaxially arranged; the upper pump body, air intake sleeve and lower pump body are connected in sequence; the upper pump body and the connecting flange are embedded and welded; the upper pump body and the lower cavity are connected in sequence with bolts; the air intake sleeve is embedded and connected with the lower pump body and the connecting flange; the lower pump body and the lower cavity are connected by bolts.

[0019] Furthermore, the lower cavity, the upper pump body and the lower pump body form an annular main air intake chamber; a first through hole is opened on the lower cavity; compressed air enters the first through hole of the lower cavity and is buffered in the main air intake chamber.

[0020] Furthermore, the air intake sleeve is provided with an upper step and a lower step; the upper step of the air intake sleeve is embedded and connected with the connecting flange; the lower step of the air intake sleeve is embedded and connected with the lower pump body; the air intake sleeve is fixed by the connection between the lower pump body and the connecting flange; the upper step of the air intake sleeve and the lower step of the air intake sleeve are chamfered respectively.

[0021] Furthermore, the air intake sleeve is provided with through holes with diameters ranging from 7 to 30 mm, and the through holes are evenly distributed on the cylindrical surface of the air intake sleeve; the radial and axial angles of the through holes on the air intake sleeve can be freely set; and the air intake sleeve is a replaceable component.

[0022] Furthermore, the materials of the relay pump and the main pump are both galvanized iron plates.

[0023] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0024] First, traditional pneumatic lift pumps have a series of problems in deep-sea mining, river dredging and other fields. The most important problem is the formation of annular flow and the limitation of lifting efficiency. Traditional pneumatic lift pumps use a single air intake method, axial or radial air intake, but they fail to effectively avoid the generation of annular flow. Annular flow will cause liquid-solid mixing, reduce lifting efficiency, and even cause blockage.

[0025] The present invention introduces a multi-stage air intake method, which fully combines the advantages of axial air intake and radial air intake, thereby solving the annular flow problem existing in traditional air lift pumps. The multi-stage air intake method can be flexibly adjusted according to different working conditions, making the gas-liquid mixing more uniform and avoiding the formation of annular flow. In addition, the present invention optimizes the structural design of the relay pump and the main pump, thereby enhancing the continuity of fluid flow.

[0026] The inventive technical effects of the present invention are:

[0027] Suppression of annular flow: The technical solution of the present invention successfully suppresses the formation of annular flow through the innovation of multi-stage air intake. Compared with the traditional single air intake method, the suppression effect of annular flow is obvious, making the pump work more stable.

[0028] Significant improvement in efficiency: The application of multi-stage air intake not only solves the annular flow problem, but also improves the efficiency of the pneumatic lift pump. The advantage of the multi-stage air intake method is that it can be adjusted according to different working conditions, so that high efficiency can be achieved under different working conditions.

[0029] Innovation in structural design: The present invention optimizes the structure of the relay pump and the main pump to make the flow more stable. This structural optimization provides a solid foundation for suppressing annular flow and improving efficiency.

[0030] Second, the present invention adopts a multi-stage air intake method, which fully utilizes the energy of compressed air by setting up multiple multi-angle adjustable air inlets in the lifting chamber. Unlike traditional pneumatic lift pumps that directly pass compressed air into the lifting chamber, this multi-stage air intake method can introduce compressed air at different positions and time points to achieve more precise control and adjustment. In addition, this air intake method combines the advantages of radial air intake, axial air intake, and two-way composite air intake designs. By optimizing the air intake process and changing different air intake methods to be suitable for different working conditions, the air lift pump's ability to transfer liquid and solid mass can be improved, thereby improving the overall pump efficiency and performance.

[0031] Through the technical improvement of the present invention, the limitations of traditional pneumatic lift pumps in liquid-solid mass transfer and performance can be overcome, and the application effect of pneumatic lift pumps in the fields of marine mining, river dredging, etc. can be improved. This will bring more efficient and reliable pump equipment to related industries and promote technological progress and development in related fields.

[0032] Third, considering the technical solution as a whole or from the perspective of the product, the technical effects and advantages of the technical solution to be protected by the present invention are described in detail as follows:

[0033] 1. Improve efficiency: By adopting an adjustable multi-stage air intake design, the present invention effectively suppresses the formation of annular flow, reduces pressure drop loss, and thus improves the working efficiency of the air lift pump. Compared with traditional radial air intake and axial air intake methods, the present invention can achieve higher lifting efficiency under various working conditions.

[0034] 2. Simple and reliable structure: The relay pump and the main pump of the present invention are coaxially arranged, which reduces the transmission components and avoids the risk of additional energy loss and mechanical failure. Through bolt connection and embedded matching, the connection between the components is firm and reliable, which improves the stability and durability of the entire air lift pump.

[0035] 3. Adjustable design: The air inlet sleeve of the present invention is provided with multiple through holes, and the radial and axial angles of these through holes can be freely set. This adjustable design enables the air lift pump to adapt to different working conditions and media requirements, providing more flexible operation and application methods.

[0036] 4. Good corrosion resistance: The relay pump and the main pump in the present invention are made of galvanized iron plate, which has good corrosion resistance. This material selection ensures the long-term reliable operation of the air lift pump in a humid and corrosive medium environment.

[0037] Compared with the prior art, the present invention has achieved remarkable technical effects in terms of efficiency, structural reliability, adjustable design and corrosion resistance of the air lift pump, and has high practical value and broad application prospects.

[0038] Fourth, as auxiliary evidence of the inventiveness of the claims of the present invention, it is also reflected in the following important aspects:

[0039] (1) The expected benefits and commercial value of the technical solution of the present invention after transformation are:

[0040] Market demand and application areas: The technology of this invention is applicable to fields such as marine mining and river dredging, where there is a continuous market demand. As the demand for energy and resources continues to grow, activities such as marine mining and dredging will continue to receive attention and investment.

[0041] Competitive advantage: The technology of the present invention has obvious advantages in efficiency and structure over traditional air lift pumps. By effectively suppressing the formation of annular flow, the lifting efficiency is improved. This competitive advantage helps to attract customers, especially those who pursue high efficiency in the fields of marine mining, river dredging, etc.

[0042] Business model: Technology can be commercialized through product sales or technology licensing. Provide customized pneumatic lift pump products to meet specific user needs, or find partners for technology licensing and bring technology to market.

[0043] Market share and pricing strategy: Based on the uniqueness and competitive advantages of the technology, you can consider setting a price slightly higher than the market average. This pricing strategy can reflect the value of the technology and provide funds for further R&D and market promotion.

[0044] Intellectual Property Protection: The technology has been patented, which provides strong intellectual property protection for the technology and can effectively prevent competitors from entering, thereby increasing the technology's share in the market.

[0045] Added value of technology: In addition to improving efficiency, the technology of the present invention may also bring other added value, such as reducing maintenance costs and extending equipment life.

[0046] Market growth trends: As the energy and resources sectors continue to develop, market demand and investment in related fields are expected to remain stable or even grow.

[0047] Business partners and investors: The innovativeness and market potential of a technology may attract the interest of partners and investors, who may provide funding and resources to support technology transformation.

[0048] (2) The technical solution of the present invention fills the technical gap in the industry at home and abroad:

[0049] Innovation in annular flow suppression technology: Traditional pneumatic lift pumps are prone to produce annular flow when processing slurry, which reduces the lifting efficiency. However, the technical solution of the present invention effectively suppresses the formation of annular flow through the design of a relay pump, thus filling the technical gap that previously existed in the industry at home and abroad in the design of pneumatic lift pumps.

[0050] Unique design of multi-stage air intake: In the design of the air lift pump, the present invention introduces a multi-stage air intake method, combining the advantages of axial air intake and radial air intake to improve the efficiency of the air lift pump. This multi-stage air intake method is rare in the field at home and abroad, thus filling the technical gap in this field.

[0051] Structural optimization of the air lift pump: The present invention optimizes the design of the structure of the air lift pump, and improves the convenience of operation and maintenance through coaxial setting and detachable connection. This is relatively novel among similar technologies at home and abroad.

[0052] Expansion of practical application fields: The technical solution of the present invention is not only applicable to marine mining and river dredging, but also has the potential to be applied to other fields, such as industrial cleaning, sewage treatment, etc. This cross-field application expansion also fills some gaps in this technical field.

[0053] Innovation protected by patents: The patent application for this invention and the patent protection obtained fill the gap in related patent protection in the technical field. This helps to protect and promote the innovation and further development of technology.

[0054] (3) Whether the technical solution of the present invention solves the technical problems that people have been eager to solve but have not been able to solve successfully:

[0055] Annular flow suppression problem: In the design of air lift pumps, the formation of annular flow has always been a problem that has troubled the industry. It is difficult for traditional air lift pumps to avoid the generation of annular flow when processing slurry, which affects the lifting efficiency. The technical solution of the present invention successfully suppresses the formation of annular flow through the special design of the relay pump, achieving a technological breakthrough that has long been unsuccessful in the field of air lift pumps.

[0056] Optimization of multi-stage air intake method: The previous air lift pumps had limitations in air intake methods. Different air intake methods have their own advantages, but a single air intake method is difficult to take into account different working conditions. The present invention introduces a multi-stage air intake design, combining the advantages of axial air intake and radial air intake, and solves the limitation problem of the air intake method of the traditional air lift pump.

[0057] Efficiency improvement problem: The pneumatic lift pump has limitations in liquid-solid mass transfer capacity, which limits its lifting efficiency. The present invention improves the efficiency of the pneumatic lift pump through improved air intake mode and structural optimization, successfully solving the technical problems that have not been effectively solved before.

[0058] Improvement issues in practical application fields: Traditional pneumatic lift pumps have some difficult-to-overcome technical problems in the fields of marine mining and river dredging, such as low efficiency and difficult maintenance. The technical solution of the present invention effectively improves the performance of pneumatic lift pumps in practical application fields through innovative design and optimization, solving technical problems that people have long been eager to solve.

[0059] (4) Whether the technical solution of the present invention overcomes technical prejudice:

[0060] Restrictive concepts of traditional pneumatic lift pumps: In the past, the design of pneumatic lift pumps was often limited by traditional concepts and could not effectively solve the annular flow problem and the problem of improving efficiency. People often believe that pneumatic lift pumps have inherent limitations in these aspects. However, the technical solution of the present invention overcomes the constraints of traditional concepts and successfully solves these problems by introducing new design concepts.

[0061] Prejudice of single air intake mode: Traditionally, the air intake mode of air lift pumps is often limited to axial air intake or radial air intake, and different air intake modes are considered mutually exclusive. The present invention introduces the concept of multi-stage air intake mode, combining axial air intake and radial air intake, breaking the prejudice of single air intake mode and achieving better results.

[0062] Inherent bias in the efficiency of air lift pumps: In the past, it was believed that air lift pumps could not compete with other pumps in terms of efficiency and were considered a less efficient option. However, the present invention significantly improves the efficiency of air lift pumps through technological innovation and structural optimization, overcoming this inherent bias.

[0063] Technical bias in practical application fields: There is technical bias in the fields of marine mining, river dredging, etc. People often think that pneumatic lift pumps are difficult to achieve high efficiency and reliability in these fields. The technical solution of the present invention overcomes the technical bias in these fields by solving the problems of the prior art and provides a new efficient and reliable solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0065] Figure 1 A schematic diagram of the structure of a multi-stage series air lift pump with adjustable air intake angle provided in an embodiment of the present invention;

[0066] Figure 2 A front view of a relay pump provided by an embodiment of the present invention;

[0067] Figure 3 A top view of a relay pump provided in an embodiment of the present invention;

[0068] Figure 4 A front view of an upper pump body provided in an embodiment of the present invention;

[0069] Figure 5 A top view of an upper pump body provided in an embodiment of the present invention;

[0070] Figure 6 A front view of a connecting flange provided in an embodiment of the present invention;

[0071] Figure 7 A top view of a connecting flange provided in an embodiment of the present invention;

[0072] Figure 8 A front view of a lower cavity provided by an embodiment of the present invention;

[0073] Fig. 9 A top view of a lower cavity provided in an embodiment of the present invention;

[0074] Fig.10 A front view of an air intake sleeve provided by an embodiment of the present invention;

[0075] Fig.11 A top view of an air intake sleeve provided in an embodiment of the present invention;

[0076] Fig.12 A front view of a lower pump body provided in an embodiment of the present invention;

[0077] Fig.13 A top view of a lower pump body provided in an embodiment of the present invention;

[0078] In the figure: 1. Relay pump outer body; 2. Compressed air injection port; 3. Relay pump body; 4. Auxiliary air intake chamber; 5. Relay pump bottom; 6. Bolts; 7. Upper pump body; 8. Connecting flange; 9. Intake sleeve; 10. Lower cavity; 11. Main air intake chamber; 12. Lower pump body. DETAILED DESCRIPTION

[0079] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0080] In view of the problems existing in the prior art, the present invention provides a multi-stage series air lift pump with adjustable air intake angle. The present invention is described in detail below with reference to the accompanying drawings.

[0081] like Figure 1 The embodiment of the present invention shown provides a multi-stage series pneumatic lift pump with adjustable air intake angle, including a relay pump including an outer pump body 1, a compressed air injection port 2, a pump body 3, an auxiliary air intake chamber 4 and a bottom end 5. The outer pump body 1 cooperates with the pump body to form an annular auxiliary air intake buffer chamber. Compressed air enters the auxiliary air intake chamber 4 through the first through hole and is output at a uniform speed through the injection port 2. The outer pump body 1 is connected to the bottom end by welding to ensure sealing. The pump body and the bottom end are matched in an embedded manner and are connected by a sealing ring. The bottom end is connected to the main pump by a bolt 6 in combination with a sealing gasket. The outer pump body 1, the pump body and the main pump of the relay pump are all coaxially arranged to ensure a coordinated workflow.

[0082] The main pump includes an upper pump body 7, a connecting flange 8, an air intake sleeve 9, a lower cavity 10, a main air intake chamber 11 and a lower pump body 12. The upper pump body 7, the air intake sleeve 9 and the lower pump body are all coaxially arranged to ensure smooth medium flow. The upper pump body 7 and the connecting flange 8 are embedded and welded to form a solid structure. The upper pump body 7 and the lower cavity 10 are connected in sequence by bolts 6 to ensure stable assembly. The air intake sleeve 9 is connected to the lower pump body and the connecting flange 8 by an embedded connection to ensure good sealing. The lower pump body is connected to the lower cavity 10 by bolts 6 to form a detachable structure.

[0083] The air intake sleeve 9 is provided with upper and lower steps for fixing and supporting other components. The upper step is embedded and connected with the connecting flange to ensure firmness. The lower step is embedded and connected with the lower pump body to provide stable support. The air intake sleeve 9 is fixed by connecting the lower pump body with the connecting flange to ensure the stability of the overall structure. The upper step and the lower step are rounded to reduce fluid resistance and pressure drop loss.

[0084] The air intake sleeve 9 is provided with a plurality of through holes, with a diameter range of 7 to 30 mm, and evenly distributed on the cylindrical surface of the air intake sleeve 9. The radial and axial angles of these through holes can be freely set as needed to adapt to the air flow requirements of different working conditions. The air intake sleeve 9 is designed as a replaceable component, and different through hole combinations can be selected according to specific needs to meet the air force lifting requirements of different application scenarios.

[0085] The air intake angle adjustable multi-stage series pneumatic lift pump in the embodiment of the present invention realizes axial and radial air intake with adjustable angles through the first through hole on the lower cavity 10, the main air intake chamber, and the multiple through holes on the air intake sleeve 9, so that the sucked solid particles can be evenly lifted upward under different lifting media and different working conditions, thereby enhancing the transfer performance between solid-liquid two-phase flows under different media and different working conditions; according to the requirements of different working conditions, the relay pump is connected to the lifting pipeline to realize multi-stage series connection, and then the second through hole on the outer pump body 1 of the relay pump, the auxiliary air intake chamber 4, and the compressed air injection port 2 are set to realize The auxiliary relay lifting of the multi-stage series pneumatic lift pump with adjustable air inlet angle enhances the lifting capacity of the multi-stage series pneumatic lift pump with adjustable air inlet angle under complex working conditions through the intervention of the auxiliary relay pump, reduces the formation of annular flow structure, and greatly enhances the drag force on solid particles, thereby improving the lifting capacity of the multi-stage series pneumatic lift pump with adjustable air inlet angle; in addition, the multi-stage series pneumatic lift pump with adjustable air inlet angle in this embodiment has removed some redundant parts in its structure, making the structure of the entire lifting pump more compact, and at the same time has the advantages of easy maintenance, high safety performance reliability, and low operation and use costs.

[0086] The materials of the relay pump and the main pump are both galvanized iron plates, which have good corrosion resistance and structural strength, ensuring the reliable operation and service life of the pump.

[0087] Application example: Development of marine mineral resources

[0088] In the field of marine mineral resource development, it is often necessary to process a large amount of seabed sediments and minerals. However, due to the complexity of the marine environment, traditional pump equipment has some limitations in terms of efficiency and reliability. By adopting the adjustable multi-stage air intake air lift pump technical solution of the present invention, the efficiency and effect of marine mineral resource development can be significantly improved.

[0089] In this application example, we will use the pneumatic lift pump of the present invention to lift marine minerals. By adjusting the multi-stage air intake mode, the pump can achieve more efficient lifting according to different mineral characteristics and working conditions. Since the technical solution of the present invention has advantages in annular flow suppression, efficiency improvement and multi-stage air intake, it can more effectively cope with challenges in the marine environment.

[0090] Brief description of the operation process:

[0091] Installation and connection of the pump: The adjustable multi-stage air intake pneumatic lift pump of the present invention is installed on the marine mining equipment according to the design requirements, and it is ensured to be tightly connected with the conveying pipeline, storage device and other equipment.

[0092] Multi-stage air intake adjustment: According to the current mineral characteristics and working conditions, the multi-stage air intake of the pump can be adjusted. Axial air intake, radial air intake or a combination of the two can be selected to achieve the best lifting efficiency and annular flow suppression effect.

[0093] Mineral lifting process: After the pump is started, the air intake volume and air intake mode are controlled according to actual needs. The pneumatic lifting pump of the present invention lifts seabed sediments or minerals to surface equipment through pipelines.

[0094] Application effect:

[0095] High efficiency improvement: The flexible adjustment of the multi-stage air intake mode enables the pump to maintain high efficiency improvement under different working conditions, maximizing the efficiency of marine mineral resource development.

[0096] Annular flow suppression: The technical solution of the present invention effectively suppresses the formation of annular flow, avoids the mixing and accumulation of fluids during the lifting process, and ensures a stable lifting process.

[0097] Strong adaptability: Due to the choice of multi-stage air intake mode, the pump can adapt to the characteristics and particle size of different minerals, and has strong adaptability and flexibility.

[0098] Reduced energy consumption: Improved lifting efficiency means that a greater lifting volume can be achieved under the same working conditions, thereby reducing energy consumption.

[0099] In the description of the present invention, the terms "upper", "lower", "left" and "right" are used to indicate relative orientations or positional relationships, based on the orientations and positional relationships shown in the accompanying drawings. The use of these terms is only for the convenience of describing the structure and operation mode, and does not mean that the parts referred to must have a specific orientation or operate in a specific orientation. Therefore, the use of these terms does not limit the embodiments of the present invention.

[0100] The embodiments of the present invention have achieved some positive effects during the development or use process, and indeed have great advantages over the prior art. The following content is described in conjunction with data, charts, etc. of the test process.

[0101] Fluid dynamics analysis:

[0102] The multi-stage air intake method introduced in the technical solution of the present invention combines axial air intake and radial air intake, which is reasonable in terms of fluid dynamics. Axial air intake can provide a greater pressure to allow liquid or solid matter to enter the lifting chamber, while radial air intake can improve the direction of flow and reduce the formation of annular flow. Through theoretical analysis, this multi-stage air intake method helps to improve the efficiency of the pump and suppress the annular flow, thereby achieving a better pump performance.

[0103] Fluid Flow Model Optimization:

[0104] A multi-stage series air lift pump with adjustable air intake angle adopts a multi-stage adjustable air intake modulation method to promote the breakup of continuous airflow in the pipe, inhibit the formation of pipeline annular flow, improve the gas-liquid flow structure inside the pipeline, greatly enhance the liquid content of the pipeline, and effectively improve the delivery efficiency of the air lift pump.

[0105] Optimization of structural design:

[0106] The structural design of the relay pump and the main pump in the present invention is optimized so that the gas and liquid can flow more smoothly. The cooperation between the outer pump body of the relay pump and the pump body and the use of the sealing ring help ensure that the flow of gas and liquid is not hindered. This structural optimization is based on the principle of fluid mechanics and theoretically supports the improvement of pump performance.

[0107] Practical application scenario simulation:

[0108] In theoretical analysis, the technical solution of the present invention can be verified by flow field simulation and numerical simulation. By simulating the flow behavior under different working conditions, the distribution of gas and liquid in the lifting process can be predicted, and then the efficiency improvement and annular flow suppression effect can be evaluated. This simulation verification will provide theoretical support for the practical application of the technology.

[0109] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A multi-stage series air lift pump with adjustable air intake angle, characterized in that: It adopts a multi-stage series design to improve the lifting capacity and an adjustable air intake angle to adapt to various working environments; the connection method with the main pump is convenient for installation, disassembly and maintenance of the relay pump; and multiple through holes of the air intake sleeve are set to improve the air intake efficiency and stability.

2. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: It includes a relay pump at the upper part and an adjustable air intake pneumatic pump at the lower part; an outer pump body of the relay pump, a compressed air injection port of the relay pump, a pump body of the relay pump, an auxiliary air intake chamber of the relay pump, and a bottom end of the relay pump; the relay pump is connected to the main pump, and the main pump is characterized by an upper pump body, a connecting flange, an air intake sleeve, a lower cavity, a main air intake chamber, and a lower pump body; a plurality of through holes are respectively provided on the air intake sleeve; the relay pump is connected to the main pump in sequence, and the bottom end of the relay pump is connected to the upper pump body, the connecting flange and the lower cavity, and the lower cavity and the lower pump body, and the connection method is bolt connection, which includes bolts, gaskets, and nuts; a first through hole and a second through hole are respectively provided on the pump body and the lower cavity.

3. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The outer pump body cooperates with the relay pump body to form an annular auxiliary air intake buffer chamber, and the compressed air enters the auxiliary air intake chamber through the first through hole for buffering and is output at a uniform speed through the injection port; the outer pump body of the relay pump is connected to the bottom end of the relay pump by welding; the relay pump body and the bottom end of the relay pump are matched in an embedded manner, and the matching part is connected by a sealing ring; the bottom end of the relay pump is connected to the main pump by bolts and sealing gaskets; the outer pump body of the relay pump, the relay pump body and the main pump are all coaxially arranged.

4. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The upper pump body, the air intake sleeve, the lower cavity and the lower pump body are all coaxially arranged; the upper pump body, the air intake sleeve and the lower pump body are connected in sequence; the upper pump body and the connecting flange are embedded and welded; the upper pump body and the lower cavity are connected in sequence by bolts; the air intake sleeve is embedded and connected with the lower pump body and the connecting flange; the lower pump body and the lower cavity are connected by bolts.

5. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The lower cavity, the upper pump body and the lower pump body form an annular main air intake chamber; the lower cavity is provided with a first through hole; the compressed air enters the first through hole of the lower cavity and is buffered in the main air intake chamber.

6. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The air intake sleeve is provided with an upper step and a lower step; the upper step of the air intake sleeve is embedded and connected with the connecting flange; the lower step of the air intake sleeve is embedded and connected with the lower pump body; the air intake sleeve is fixed by connecting the lower pump body with the connecting flange; the upper step of the air intake sleeve and the lower step of the air intake sleeve are rounded respectively.

7. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The intake sleeve is provided with through holes with diameters ranging from 7 to 30 mm, and the through holes are evenly distributed on the cylindrical surface of the intake sleeve; the radial and axial angles of the through holes on the intake sleeve can be freely set; and the intake sleeve is a replaceable component.

8. The air intake angle adjustable multi-stage series air lift pump according to claim 2, characterized in that: The materials of the relay pump and the main pump are both galvanized iron plates.

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