Novel efficient oscillation pneumatic pump

Abstract

The utility model discloses a novel efficient oscillation pneumatic pump which sequentially comprises a lower pump body, an upper pump body, a lower nozzle, an oscillation cavity seat, a self-oscillation cavity pipe and an upper nozzle which are coaxially arranged from bottom to top, an air inlet pipe is installed between the lower pump body and the upper pump body and wraps the lower pump body and the upper pump body to form an annular air inlet cavity, and the lower pump body and the upper pump body are connected through a pipeline. An air inlet hole is formed in the air inlet pipe, an annular air inlet nozzle is arranged between the lower pump body and the upper pump body, and compressed air enters the annular air inlet cavity from the air inlet hole and is sprayed out from the annular air inlet nozzle; the self-oscillation cavity pipe is installed between the oscillation cavity base and the upper nozzle, and the oscillation cavity base, the self-oscillation cavity pipe and the upper nozzle define a self-oscillation cavity. And a lower nozzle is arranged between the upper pump body and the oscillation cavity seat. According to the utility model, the scattered design is adopted, the replacement and maintenance of each section of structure are facilitated, the assembly can be carried out according to use requirements, and the use effect is good. The whole structure is coaxially arranged, and energy loss can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic lifting devices, in particular to a novel high-efficiency oscillating pneumatic pump. Background Art

[0002] With the rapid development of my country's industry, the demand for mineral resources is also increasing. However, after long-term exploitation, land resources have become exhausted and cannot meet the rapidly growing domestic consumption demand. The reserves of important mineral resources are decreasing. In order to alleviate the shortage of resources, turning to the ocean has become an inevitable choice. Marine mineral resources are mostly distributed in deep sea areas, and mining technology has become a key factor restricting their development and utilization. Therefore, the research and development and innovation of deep-sea mining technology has become an important breakthrough in solving the resource crisis.

[0003] The current deep-sea mining technologies mainly include pneumatic lift pumps, shuttle submersible ore collecting machine systems, seabed automatic mining systems and continuous chain bucket lifting mining systems. However, these technologies still have some problems: pneumatic lift pumps are complex in structure, inconvenient to maintain, low in safety, and unsatisfactory lifting performance. Although the shuttle submersible ore collecting machine system and the seabed automatic mining system have a high degree of automation, the cost of use and maintenance is high. The continuous chain bucket lifting mining system has certain problems in the connection between the cable and the bucket, the movement of the cable on the ship, and the uncertainty of the bucket working on the seabed. In particular, the chain bucket working on the seabed may have a great impact on the marine environment. Taking all factors into consideration, the industry generally believes that the re-development of pneumatic lift pumps that can improve lifting performance is the most feasible and urgent technical problem to be solved. By improving the design of pneumatic lift pumps, improving their performance and safety, it is expected to become a key breakthrough in deep-sea mining technology. Utility Model Content

[0004] The utility model aims to provide a novel high-efficiency oscillating pneumatic pump to solve the problems of poor lifting effect and large energy loss of existing pneumatic lifting equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of high-efficiency oscillating pneumatic pump, which includes, from bottom to top, a coaxially arranged lower pump body, an upper pump body, an oscillation chamber seat, a self-excited oscillation chamber tube and an upper nozzle, an air intake pipe is installed between the lower pump body and the upper pump body, the air intake pipe is wrapped outside the lower pump body and the upper pump body to form an annular air intake chamber, an air intake hole is arranged on the air intake pipe, and an annular air intake nozzle is arranged between the lower pump body and the upper pump body, and compressed gas enters the annular air intake chamber from the air intake hole and is ejected from the annular air intake nozzle; the self-excited oscillation chamber tube is installed between the oscillation chamber seat and the upper nozzle, and the three together form a self-excited oscillation chamber.

[0006] As a further improvement of the above technical solution:

[0007] The lower pump body includes a first flange, a first cylindrical section, a first conical section and a lower mounting groove; the upper pump body includes a second flange, a second cylindrical section, a second conical section and an upper mounting groove; the air intake pipe is installed between the upper mounting groove and the lower mounting groove, and the first conical section and the second conical section are arranged in parallel to form an annular air intake nozzle, and the thickness of the annular air intake nozzle ranges from 4 to 8 mm.

[0008] A lower nozzle is arranged between the upper pump body and the oscillation chamber seat, and the lower nozzle comprises a third flange, a third cylindrical section, a third conical section, a lower mounting end cover and a mounting truncated table.

[0009] The oscillation chamber seat includes a connecting tube body, a first mounting platform and a second mounting platform; the upper nozzle includes a fourth flange, an expansion tube body and an upper mounting end cover; the self-excited oscillation chamber tube is installed between the second mounting platform and the upper mounting end cover, and a first sealing gasket is provided at the connection, the third cylindrical section extends into the connecting tube body, and is matched with the mounting cylindrical platform and the first mounting platform, a second sealing gasket is provided between the first mounting platform and the lower mounting end cover, and a tensioning bolt is provided between the upper mounting end cover and the lower mounting end cover.

[0010] The inner diameter of the first cylindrical section is smaller than the inner diameter of the second cylindrical section.

[0011] The inner diameter of the third cylindrical section is smaller than the inner diameter of the second cylindrical section.

[0012] The inner diameter of the third cylindrical section is smaller than the inner diameter of the inlet of the expansion tube body.

[0013] The inner wall of the exciting oscillation chamber tube is provided with wavy patterns or spiral patterns.

[0014] The ratio of the cavity length to the cavity diameter of the self-excited oscillation cavity is 0.3-0.7.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The new high-efficiency oscillating pneumatic pump of the utility model adopts a fragmented design, which is convenient for replacement and maintenance of each section of the structure. It can be assembled according to the use requirements and has a good use effect. The overall structure is coaxially arranged, which can effectively reduce energy loss. A self-excited oscillation cavity is added to the traditional pneumatic pump to effectively modulate the gas-liquid-solid three-phase flow, causing large bubbles to split into smaller bubbles, and enhancing the energy exchange of the gas-liquid-solid mixed fluid. Compared with a pneumatic pump without an oscillation cavity, the negative pressure at the bottom of the suction chamber is increased, which greatly increases the drag force of solid matter and improves the lifting performance of the oscillating pneumatic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a schematic diagram of the lower pump structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the air intake pipe structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the upper pump structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the lower nozzle structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the self-excited oscillation chamber tube structure of the utility model;

[0023] Figure 7 This is a schematic diagram of the upper nozzle structure of the utility model.

[0024] 1. The lower pump body; 10. The first sealing gasket; 11. The first flange; 12. The first cylindrical section; 13. The first conical section; 14. The lower mounting groove; 2. The air inlet pipe; 3. The upper pump body; 31. The second flange; 32. The second cylindrical section; 33. The second conical section; 34. The upper mounting groove; 4. The lower nozzle; 41. The third flange; 42. The third cylindrical section; 43. The third conical section; 44. The lower mounting end cover; 45. The mounting truncated table; 5. The oscillation chamber seat; 51. The connecting tube body; 52. The first mounting table; 53. The second mounting table; 6. The self-excited oscillation chamber tube; 7. The tightening bolt; 8. The upper nozzle; 81. The fourth flange; 82. The expansion tube body; 83. The upper mounting end cover; 9. The self-excited oscillation chamber; 20. The air inlet hole; 40. The second sealing gasket; 21. The annular air inlet chamber; 22. The annular air inlet nozzle. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate directions or positions, and the relationship is based on the directions or positional relationships shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 , Figure 3 , Figure 6 As shown, the new high-efficiency oscillating pneumatic pump of this embodiment includes, from bottom to top, a coaxially arranged lower pump body 1, an upper pump body 3, a lower nozzle 4, an oscillation chamber seat 5, a self-excited oscillation chamber tube 6 and an upper nozzle 8. The coaxial arrangement can reduce energy loss during operation. An air intake pipe 2 is installed between the lower pump body 1 and the upper pump body 3. The air intake pipe 2 is wrapped around the lower pump body 1 and the upper pump body 3 to form an annular air intake chamber 21. An air intake hole 20 is provided on the air intake pipe 2. The air intake hole 20 is used to connect the air intake pipe to pump compressed air into the annular air intake chamber 21. An annular air intake nozzle 22 is provided between the lower pump body 1 and the upper pump body 3. The compressed gas enters the annular air intake chamber 21 from the air intake hole 20 and is ejected from the annular air intake nozzle 22; the self-excited oscillation chamber tube 6 is installed between the oscillation chamber seat 5 and the upper nozzle 8, and the three together form a self-excited oscillation chamber 9.

[0030] like Figure 2 As shown, the lower pump body 1 includes a first flange 11, a first cylindrical section 12, a first conical section 13 and a lower mounting groove 14;

[0031] like Figure 4 As shown, the upper pump body 3 includes a second flange 31, a second cylindrical section 32, a second conical section 33 and an upper mounting groove 34; the air intake pipe 2 is installed between the upper mounting groove 34 and the lower mounting groove 14, and is connected by welding. The first conical section 13 and the second conical section 33 are arranged in parallel to form an annular air intake nozzle 22, and the thickness of the annular air intake nozzle 22 ranges from 4 to 8 mm.

[0032] like Figures 5 to 7As shown, the lower nozzle 4 includes a third flange 41, a third cylindrical section 42, a third conical section 43, a lower mounting end cover 44 and a mounting truncated table 45; the oscillation chamber seat 5 includes a connecting tube body 51, a first mounting platform 52 and a second mounting platform 53; the upper nozzle 8 includes a fourth flange 81, an expansion tube body 82 and an upper mounting end cover 83; the self-excited oscillation chamber tube 6 is installed between the second mounting platform 53 and the upper mounting end cover 83, and a first sealing gasket 10 is provided at the connection, the third cylindrical section 42 extends into the connecting tube body 51, and a second sealing gasket 40 is provided between the first mounting platform 52 and the lower mounting end cover 44 through the cooperation of the mounting truncated table 45 and the first mounting platform 52, and a tensioning bolt 7 is provided between the upper mounting end cover 83 and the lower mounting end cover 44. The lower nozzle 4, the oscillation chamber seat 5, the self-excited oscillation chamber tube 6 and the upper nozzle 8 are fixed by tightening the bolts 7 to achieve overall fixation. Self-excited oscillation chamber tubes 6 of different sizes can be installed, and the sealing gasket can be tightened by thread locking to achieve sealing. The aforementioned flange is used for installation and fixation, and is fixed by bolts passing through the flange. A collision wall is provided in the upper nozzle 8. When the fluid enters the self-excited oscillation chamber 9, a pressure oscillation wave is generated in the collision zone. The wave propagates upstream and induces new vortex pulsation. If the pressure pulsations in the separation zone are in anti-phase with each other, a cycle of vortex disturbance-amplification-generation of new vortex pulsation will be formed. This process is repeated continuously to form a strong self-excited pulse jet.

[0033] The inner diameter of the first cylindrical section 12 is smaller than the inner diameter of the second cylindrical section 32. This design can reduce the resistance and energy consumption of the fluid passing through the pump, improving the overall energy efficiency and performance. The smaller lower end diameter helps to form a higher speed at the bottom of the pump, thereby increasing the suction efficiency of the pump. This design can promote the rapid movement of the fluid and the efficient operation of the pump.

[0034] The inner diameter of the third cylindrical section 42 is smaller than the inner diameter of the second cylindrical section 32. In this way, the fluid can be pressurized by the collecting effect, and the flow velocity can be increased to improve the oscillation effect in the self-excited oscillation cavity 9.

[0035] The inner diameter of the third cylindrical section 42 is smaller than the inlet inner diameter of the expansion tube 82. The difference in diameter between the two can affect the frequency and amplitude of the self-excited oscillation; it can lead to higher fluid velocity and faster pressure wave propagation, thereby affecting the frequency and wavelength of the oscillation. The inner diameter of the third cylindrical section 42 is smaller than the inlet inner diameter of the expansion tube 82, which can promote the start-up and stability of the self-excited oscillation. This design can more effectively generate the required pressure waves or flow conditions, thereby maintaining the stability and continuity of the oscillation.

[0036] The inner wall of the exciting oscillation chamber tube 6 is provided with wavy lines or spiral lines. By improving the inner wall of the exciting oscillation chamber tube 6, the oscillation efficiency can be effectively improved.

[0037] The ratio of the cavity length to the cavity diameter of the self-excited oscillation cavity 9 is 0.3-0.7. The fluid is sheared and mixed in the self-excited oscillation cavity 9 to form a self-excited oscillation jet. A reasonable length-to-diameter ratio setting can enhance the mass transfer capacity between gas, liquid and solid.

[0038] The self-excited oscillation chamber 9 can modulate the gas-liquid-solid three-phase flow, causing large bubbles to split into smaller bubbles, and enhancing the energy exchange of the gas-liquid-solid mixed fluid. Compared with the pneumatic pump without an oscillation chamber, the negative pressure at the bottom of the suction chamber is increased, which greatly increases the drag force of the solid matter and improves the lifting performance of the oscillating pneumatic pump. Through actual experiments, its lifting performance is improved by at least 10%.

[0039] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A new type of high-efficiency oscillating pneumatic pump, characterized in that: From bottom to top, the pump comprises a coaxially arranged lower pump body (1), an upper pump body (3), an oscillation chamber seat (5), a self-excited oscillation chamber tube (6) and an upper nozzle (8); an air intake pipe (2) is installed between the lower pump body (1) and the upper pump body (3); the air intake pipe (2) is wrapped around the lower pump body (1) and the upper pump body (3) to form an annular air intake chamber (21); an air intake hole (20) is provided on the air intake pipe (2); an annular air intake nozzle (22) is provided between the lower pump body (1) and the upper pump body (3); compressed gas enters the annular air intake chamber (21) from the air intake hole (20) and is ejected from the annular air intake nozzle (22); the self-excited oscillation chamber tube (6) is installed between the oscillation chamber seat (5) and the upper nozzle (8); the three together form a self-excited oscillation chamber (9).

2. The novel high-efficiency oscillating pneumatic pump according to claim 1 is characterized in that: The lower pump body (1) comprises a first flange (11), a first cylindrical section (12), a first conical section (13) and a lower mounting groove (14); the upper pump body (3) comprises a second flange (31), a second cylindrical section (32), a second conical section (33) and an upper mounting groove (34); the air intake pipe (2) is installed between the upper mounting groove (34) and the lower mounting groove (14); the first conical section (13) and the second conical section (33) are arranged in parallel to form an annular air intake nozzle (22); the thickness of the annular air intake nozzle (22) is in the range of 4-8 mm.

3. The novel high-efficiency oscillating pneumatic pump according to claim 2 is characterized in that: A lower nozzle (4) is provided between the upper pump body (3) and the oscillation chamber seat (5), and the lower nozzle (4) comprises a third flange (41), a third cylindrical section (42), a third conical section (43), a lower mounting end cover (44) and a mounting truncated table (45).

4. The novel high-efficiency oscillating pneumatic pump according to claim 3 is characterized in that: The oscillation chamber seat (5) comprises a connecting tube body (51), a first mounting platform (52) and a second mounting platform (53); the upper nozzle (8) comprises a fourth flange (81), an expansion tube body (82) and an upper mounting end cover (83); the self-excited oscillation chamber tube (6) is mounted between the second mounting platform (53) and the upper mounting end cover (83), and a first sealing gasket (10) is provided at the connection point; the third cylindrical section (42) extends into the connecting tube body (51), and is matched with the mounting truncated platform (45) and the first mounting platform (52); a second sealing gasket (40) is provided between the first mounting platform (52) and the lower mounting end cover (44); and a tensioning bolt (7) is provided between the upper mounting end cover (83) and the lower mounting end cover (44).

5. The novel high-efficiency oscillating pneumatic pump according to claim 4 is characterized in that: The inner diameter of the first cylindrical section (12) is smaller than the inner diameter of the second cylindrical section (32).

6. The novel high-efficiency oscillating pneumatic pump according to claim 4 is characterized in that: The inner diameter of the third cylindrical section (42) is smaller than the inner diameter of the second cylindrical section (32).

7. The novel high-efficiency oscillating pneumatic pump according to claim 4 is characterized in that: The inner diameter of the third cylindrical section (42) is smaller than the inner diameter of the inlet of the expansion tube body (82).

8. The novel high-efficiency oscillating pneumatic pump according to claim 1 is characterized in that: The inner wall of the self-excited oscillation chamber tube (6) is provided with wavy patterns or spiral patterns.

9. The novel high-efficiency oscillating pneumatic pump according to claim 1 is characterized in that: The ratio of the cavity length to the cavity diameter of the self-excited oscillation cavity (9) is 0.3-0.7.

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