A pumping system

Abstract

The present invention discloses a pumping system, which includes a pump housing, a pumping execution component, and a fluid power device disposed within the pump housing. The fluid power device drives the pumping execution component to perform a pumping action. The fluid power device includes: an outer ring, on the inner circumferential surface of which a plurality of driving recesses are provided in the circumferential direction; a core body, which is coaxially disposed within the outer ring and can rotate relative to the outer ring. At least one nozzle, at least one discharge port, and at least one secondary flow channel located between the nozzle and the discharge port are provided on the outer circumferential surface of the core body; at least one fluid inlet channel, which communicates with at least one nozzle; and at least one fluid discharge channel, which communicates with at least one discharge port. The pneumatic centrifugal pump provided by the present invention does not need to consider the waterproof problem as compared with an electric pump. The pneumatic centrifugal pump provided by the present invention only needs to carry a compressed gas cylinder and does not need to pull electric wires, and is applicable to some remote places.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid machinery, and particularly to a pumping system. Background Art

[0002] A pump is a general-purpose machine with a wide variety of types and extensive applications. It is involved in various sectors of the national economy and plays a very important role, such as in urban water supply and drainage, farmland irrigation, fire protection, food industry, petrochemical industry, power industry, mining, energy development, shipbuilding industry, etc. In addition, pumps are also importantly applied in nuclear power generation, water jet propulsion of ships, fuel supply of rockets, etc. Moreover, pumps can also be used for long-distance hydraulic transportation of solids such as coal and fish or animals.

[0003] Classified by the driving method, pumps can be divided into electric pumps, air pumps and liquid pumps. When installing an electric pump, problems such as waterproofing and wire layout need to be considered; when installing a liquid pump, there is also the problem of wire layout; existing air pumps can well solve the above problems, but there are still deficiencies in low fluid utilization rate. Summary of the Invention

[0004] The problem to be solved by the present invention is the low fluid utilization rate of existing air pumps.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A pumping system provided by the present invention includes a pump housing, a pumping execution component, and a fluid power device disposed in the pump housing. The fluid power device drives the pumping execution component to perform a pumping action; the fluid power device includes:

[0007] An outer ring, on the inner circumferential surface of which a plurality of driving recesses are provided in the circumferential direction;

[0008] A core body, which is coaxially disposed inside the outer ring and can rotate relative to the outer ring. At least one spray port, at least one discharge port, and at least one secondary flow channel located between the spray port and the discharge port are provided on the outer circumferential surface of the core body;

[0009] At least one fluid inlet channel, which communicates with at least one spray port; and

[0010] At least one fluid discharge channel, which communicates with at least one discharge port;

[0011] The fluid enters through the fluid inlet channel, is ejected step by step through the spray port and the secondary flow channel of the core body, acts on at least two driving recesses on the circumference of the outer ring, generates a thrust on these driving recesses to push the outer ring to rotate and do work, realizing power output. Finally, the fluid is discharged through the discharge port of the core body via the fluid discharge channel.

[0012] Further, at least one fluid inlet channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one row of outlets, and at least one fluid discharge channel form an independent work unit, and the hydrodynamic device includes at least one independent work unit.

[0013] Further, the nozzles and secondary flow channels on the core body communicate with the corresponding driving recesses on the outer ring. The secondary flow channels are arranged staggered with the corresponding driving recesses and communicate in sequence. The secondary flow channels are arranged along the circumferential direction of the core body or the outer ring.

[0014] Further, the fluid inlet channel and the fluid discharge channel are formed within the core body.

[0015] Further, the core body includes: a fluid inlet channel that forms a nozzle on the circumferential surface of the core body, and its trend is an arc line extending from the middle to the outside. The nozzle communicates with the corresponding driving recess on the outer ring to form a first-stage flow channel; a secondary flow channel, and its trend is an arc line that bends and extends from the edge of the core body inward and then to the edge. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, and forms an N-stage flow channel along the circumferential direction of the core body, where N is a natural number greater than or equal to 2;

[0016] Each stage of the flow channel and the corresponding driving recess on the outer ring cooperate to form a multi-stage stroke structure with decreasing fluid energy.

[0017] Further, the secondary flow channel includes a return channel and a communicating stroke channel. The return channel communicates with the corresponding driving recess on the outer ring, and the stroke channel communicates with another driving recess.

[0018] Further, the trend of the fluid inlet channel on the core body is a logarithmic spiral line extending from the middle to the outside. The pole of the logarithmic spiral line is set on the central axis of the core body, and the trend angle of the logarithmic spiral line is 15° - 45°.

[0019] Further, the core body is provided with a fluid inlet channel, and its trend is a logarithmic spiral line extending from the middle to the outside. The trend of the stroke channel of the secondary flow channel is a logarithmic spiral line, and the trend of the logarithmic spiral line of the stroke channel of the secondary flow channel is substantially the same as that of the logarithmic spiral line of the fluid inlet channel.

[0020] Further, the hydrodynamic device further includes a shaft, and the outer ring and the core body are coaxially arranged on the shaft.

[0021] Further, the hydrodynamic device further includes a shaft, and the outer ring and the core body are coaxially arranged on the shaft. Fluid inlet and outlet channels are opened on the shaft and communicate with the fluid inlet channel and the fluid discharge channel of the core body respectively. Fluid inlet and outlet channels are formed inside the shaft to form a fluid inlet and a fluid outlet, and the fluid inlet and outlet channels are non-communicating structures.

[0022] Further, the outer ring is cooperated with the shaft through side plates to form a closed space, and the core body is arranged inside the closed space and fixedly connected to the shaft.

[0023] Furthermore, in the independent work unit, the fluid inlet channel, the nozzle, the driving recess, the secondary flow channel, the discharge port and the fluid discharge channel constitute a fluid flow path.

[0024] Furthermore, the fluid power device includes two or more independent work units to form a multi-stage drive structure, which is arranged circumferentially along the core or the outer ring.

[0025] Furthermore, there are more than 2 driving recesses provided on the inner ring surface of the outer ring. Each driving recess has a contour bottom surface and a driving surface. The contour line of the contour bottom surface is a logarithmic spiral, and its pole is set at the center of the core.

[0026] Furthermore, a pneumatic engine includes the described fluid power device, and the fluid is compressed gas or gas with a certain pressure.

[0027] Furthermore, a continuously variable transmission includes the described fluid power device.

[0028] The fluid power device of the present invention has a simple structure, a large torque, a high rotational speed, a high transmission efficiency, and low energy consumption, and can be widely applied to transportation means, power generation equipment and other fields that require power output devices.

[0029] Furthermore, the pumping system is a pneumatic centrifugal pumping system, a hydraulic centrifugal pumping system, a pneumatic piston pumping system, a hydraulic piston pumping system, a pneumatic peristaltic pumping system or a hydraulic peristaltic pumping system.

[0030] Furthermore, the outer ring of the fluid power device is drivingly connected to the pumping execution assembly through a flange; or the outer ring of the fluid power device is drivingly connected to the pumping execution assembly through a reduction mechanism; or the outer ring of the fluid power device directly drives the pumping execution assembly as the rotor of the pumping execution assembly.

[0031] The present invention adopts the above technical solutions and has the following beneficial effects:

[0032] 1. The pneumatic centrifugal pump provided by the present invention does not need to consider the waterproof problem compared with the electric pump.

[0033] 2. The pneumatic centrifugal pump provided by the present invention only needs to carry a compressed gas cylinder and does not need to pull an electric wire, and is suitable for some remote places.

[0034] 3. The multi-stage flow channels provided in the core body of the present invention, that is, the fluid inlet channel serves as the first-stage flow channel, and each impulse flow channel serves as the second, third, fourth... stage flow channels. The fluid acts on the driving recesses on the outer ring from the first-stage flow channel. The driving recesses communicate with the second-stage flow channel, and then return to the second-stage flow channel and act on another driving recess on the outer ring, and so on, until the fluid is discharged from the fluid discharge channel. The whole process proceeds in the forward direction along the rotation direction of the outer ring, with large torque, high transmission efficiency, high fluid utilization rate, and the output torque further increases as the rotational speed increases.

[0035] 4. The flow channels circumferentially arranged on the core body of the present invention effectively reduce the volume of the overall device and can be flexibly matched with power generation or output devices in various fields. At the same time, the more fluid inlet channels are provided on the core body, the lower the overall weight, further improving the output speed and efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional schematic diagram of the pumping system according to the first embodiment of the present invention.

[0037] Figure 2 is a schematic diagram of the fluid power device according to the first embodiment of the present invention.

[0038] Figure 3 is a side view of the fluid power device according to the first embodiment of the present invention in the axial direction of shaft A.

[0039] Figure 4 is a side view of the fluid power device according to the first embodiment of the present invention in the axial direction of shaft B.

[0040] Figure 5 is a cross-sectional view of the fluid power device according to the first embodiment of the present invention.

[0041] Figure 6 is another layout diagram of the fluid power device according to the first embodiment of the present invention.

[0042] Figure 7 is a schematic diagram of the fluid power device according to the second embodiment of the present invention.

[0043] Figure 8 is a side view of the fluid power device according to the second embodiment of the present invention in the axial direction of shaft C.

[0044] Figure 9 is a side view of the fluid power device according to the second embodiment of the present invention in the axial direction of shaft D.

[0045] Figure 10 is a radial cross-sectional view of the fluid power device according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0046] To further illustrate the embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0048] Embodiment 1:

[0049] Please refer to Figures 1 to 5 A pumping system provided in this embodiment includes a pump housing 5, a pumping execution component, and a fluid power device disposed in the pump housing 5. The fluid power device drives the pumping execution component to perform a pumping action; the fluid power device includes an outer ring 1, and a plurality of driving recesses 11 are provided on the inner circumferential surface of the inner ring thereof; a core 3 is coaxially disposed inside the outer ring 1 and can rotate relative to the outer ring. At least one nozzle 301, at least one discharge port 302, and at least one secondary flow channel 300 located between the nozzle and the discharge port are provided on the outer circumferential surface of the core 3; the pumping execution component has different implementation forms according to different pumping systems. For example, when the pumping system is a pneumatic centrifugal pumping system or a hydraulic centrifugal pumping system, the pumping execution component is an execution component that drives the impeller to rotate for centrifugal pumping; another example is that when the pumping system is a pneumatic piston pumping system or a hydraulic piston pumping system, the pumping execution component is an execution component that drives the piston to reciprocate for pumping; still another example is that when the pumping system is a pneumatic peristaltic pumping system or a hydraulic peristaltic pumping system, the pumping execution component is an execution component that drives the extrusion roller to move for pumping.

[0050] At least one fluid inlet channel 31, which communicates with at least one nozzle 301; and

[0051] At least one fluid discharge channel 310, which communicates with at least one discharge port 302;

[0052] Fluid (the fluid in this embodiment can be a liquid or a gas) enters through the fluid inlet channel 31, is ejected step by step through the nozzle 301 of the core 3 and the secondary flow channel 300, acts on at least two driving recesses 11 on the circumference of the outer ring 1, generates a thrust on these driving recesses 11 to push the outer ring 1 to rotate and do work, realizing continuous power output. Finally, the fluid is discharged through the discharge port of the core 3 through the fluid discharge channel. The fluid power device further includes a shaft 2, and the outer ring 1 and the core 3 are coaxially disposed on the shaft 2.

[0053] Such as Figure 5As shown in the figure, a fluid inlet channel 31 and a fluid discharge channel 310 are formed in the core 3. The nozzle 301 and the secondary flow channel 300 on the core 3 are communicated with the driving recess 11 corresponding to the outer ring 1. Among them, the secondary flow channels 300 are arranged in a staggered manner and communicated with the corresponding driving recesses 11 in sequence, and the secondary flow channels 300 are arranged along the circumferential direction of the core or the outer ring.

[0054] As Figure 5 , the core 3 includes: a fluid inlet channel 31, which forms a nozzle 31 on the circumferential surface of the core, and its trend is an arc line extending from the middle to the outside. The nozzle 301 is communicated with the driving recess 11 corresponding to the outer ring to form a first-stage flow channel;

[0055] The secondary flow channel 300, its trend is an arc line that bends and extends from the edge of the core 3 inward and then to the edge. Each secondary flow channel 300 is communicated with the two adjacent driving recesses 11 corresponding to the outer ring 1, and an N-stage flow channel is formed along the circumferential direction of the core, where N is a natural number greater than or equal to 2. It should be noted that: if it is a 2-stage flow channel, it includes the first-stage flow channel (fluid inlet channel) and the second-stage flow channel (primary flow channel); if it is a 3-stage flow channel, it includes the first-stage flow channel (fluid inlet channel), the second-stage flow channel (primary flow channel), and the third-stage flow channel (another primary flow channel),...

[0056] Each stage of the flow channel cooperates with the corresponding driving recess of the outer ring to form a multi-stage stroke structure with decreasing fluid energy.

[0057] According to the requirements of the load, the fluid power device can be designed. The core 3 can be provided with a 2-stage flow channel, a 3-stage flow channel, or more stages of fluid inlet channels. Each stage performs cyclic work, and the energy is fully utilized to maximize the use efficiency to meet the requirements of output torque and rotational speed.

[0058] As Figure 6 is a schematic diagram of a 4-stage flow channel. After the fluid enters from the first-stage flow channel 311, it passes through the second, third, and fourth-stage flow channels 312, 313, and 314, and is ejected to act on the corresponding driving recess 11, and finally the fluid is output through the fluid discharge channel 310; Figure 5 is a schematic diagram of a 5-stage fluid inlet channel. The working process is the same as Figure 6 The schematic is similar. As Figure 6 , the secondary flow channel 300 includes a return channel and a communicating stroke channel. As Figure 6 the return channel 3131 and the communicating stroke channel 3132 in the third-stage flow channel in

[0059] Please refer to Figure 2, the hydrodynamic device further includes a shaft 2. The outer ring 1 and the core 3 are coaxially arranged on the shaft 2. Fluid inlet and outlet channels 21 and 210 are provided on the shaft 2 and are respectively communicated with the fluid inlet channel 31 and the fluid discharge channel 310 of the core 3. The fluid inlet and outlet channels in the shaft form an inlet and an outlet, and the fluid inlet and outlet channels are of a non-connected structure. The outer ring 1 is cooperated with the shaft 2 through side plates 41 and 42 to form a closed space, and the core 3 is arranged in the closed space and fixedly connected to the shaft 2. In the present invention, the core 3 is provided with at least two stages of flow channels, and each stage of flow channel is communicated with the corresponding driving concave part of the outer ring, and finally the fluid is discharged through the fluid discharge channel.

[0060] Please refer to Figure 2 , in the present invention, the core 3 can be formed by the cooperation of a left core and a right core. The fluid inlet channel 31 and the fluid discharge channel 310 are provided on the mating surface of the left and right cores. The core 3 can also be integrally cast.

[0061] Please refer to Figure 2 、 Figure 5 , in this embodiment, it is a first-stage driving structure. One fluid channel is circumferentially arranged on the core 3 to form a first-stage driving structure. The fluid channel is also called an independent work unit. One fluid inlet channel 31, one nozzle 301, at least two driving concave parts 11, at least one secondary impact channel 300, one discharge port 302 and one fluid discharge channel 310 on the core 3 and the outer ring 1 form an independent work unit. The hydrodynamic device includes at least one independent work unit. In the independent work unit, the fluid inlet channel 31, the nozzle 301, the driving concave part 11, the secondary impact channel 300, the discharge port 302 and the fluid discharge channel 310 constitute a fluid flow path.

[0062] Please refer to Figure 2 、 Figure 5 or Figure 6 , in the present invention, more than two driving concave parts 11 are arranged on the inner ring surface of the outer ring 1. Each driving concave part has a contour bottom surface 111 and a driving surface 112. The contour line of the contour bottom surface 111 can be a common arc line or a spiral line. When the contour line of the contour bottom surface is a logarithmic spiral line, its pole is set on the shaft. Each driving concave part 11 is simultaneously communicated with the adjacent-stage flow channels so that the fluid entering from the previous-stage flow channel is output by the next-stage flow channel.

[0063] In the present invention, the flow direction of the fluid inlet channel of the core 3, i.e., the first-stage flow channel, can be a common arc line or a spiral line, and the flow direction of the stroke channels in each secondary impact channel, i.e., the N-stage flow channel, can also be a common arc line or a spiral line.

[0064] Such as Figure 5 and Figure 6, a fluid inlet channel 31 is provided on the core 3 of the present invention, and its direction is a logarithmic spiral extending from the middle to the outside. The stroke channel of the secondary impulse channel 300 has a logarithmic spiral direction, and the logarithmic spiral direction of the stroke channel of the secondary impulse channel is substantially the same as that of the logarithmic spiral of the fluid inlet channel. The direction of the fluid inlet channel of the core 3 is a logarithmic spiral extending from the middle to the outside. The pole of the logarithmic spiral is set on the central axis of the core, and the logarithmic spiral direction angle is 15° - 45°. The smaller the angle, the longer the flow channel and the more losses; the larger the angle, the smaller the tangential component force of the driving outer ring.

[0065] Please refer to Figure 2 , Figure 3 and Figure 4 , the inlet and outlet fluid channels 21, 210 in the shaft 2 of the present invention form an inlet and an outlet, and the inlet and outlet fluid channels are of a non-connected structure. The inlet and outlet of the shaft can be provided at one end of the shaft or at both ends of the shaft. The fluid inlet channel 21 of the shaft communicates with the fluid inlet channel 31 of the core, and the fluid discharge channel of the shaft axially extends to form a fluid discharge shaft channel 210, and the fluid discharge shaft channel communicates with the fluid discharge channel 310 of the core.

[0066] The fluid power device involved in this application refers to a device that can convert fluid energy into mechanical rotation. In addition to the necessary outer ring, core and their corresponding concave structure or flow channel structure design, the device can also additionally include other components; for example, it can additionally include a housing and a sealing structure for providing external protection, and for another example, it can additionally include a coupling for providing torque transmission, etc. Among them, the outer ring can have different specific forms according to different mechanical rotation output methods. For example, an external tooth-shaped structure is formed on the outer side of the outer ring to facilitate the output of kinetic energy through a gear transmission method; for another example, the outer ring has a pulley groove to output kinetic energy through a belt transmission method; for still another example, the outer ring has a mounting flange to facilitate the installation of a coupling to output kinetic energy; and so on. The materials of the core and the outer ring are made of hard materials, not limited to metals, metal alloys, plastics, composite materials. The processing methods of the concave structure or flow channel structure of the core and the outer ring can be realized by all known production means, including but not limited to die casting, forging, extrusion, 3D printing, etc. The fluid pressure input to the power device can be generated by a compressor (such as a pneumatic pump), a container for compressing fluid (such as a high-pressure gas cylinder), etc.

[0067] Figure 2 and Figure 5 It should be noted that in Figure 2 , although the fluid inlet channel 31, the fluid discharge channel 310 of the core and the fluid inlet channel 21, the fluid discharge shaft channel 210 do not correspond according to the drawing rules, for the purpose of vivid illustration, Figure 7 and Figure 10A schematic diagram similar to this is shown.

[0068] In this embodiment, the pumping system is a pneumatic centrifugal pumping system, but it is not limited thereto. The pumping system can also be a hydraulic centrifugal pumping system, or an axial flow pumping system, an inclined flow pumping system, or a vortex pumping system. The axial flow pumping system, the inclined flow pumping system, and the vortex pumping system can all be pneumatic or hydraulic.

[0069] In this embodiment, the outer ring of the fluid power device directly drives the pumping execution component as the rotor of the pumping execution component. Specifically, the outer ring of the fluid power device directly serves as the impeller of the pneumatic centrifugal pumping system; or the outer ring of the fluid power device is connected by a flange to drive the impeller. Of course, in other embodiments, the outer ring of the fluid power device can also be drivingly connected to the pumping execution component through a reduction mechanism.

[0070] Embodiment 2: Please refer to Figures 7 to 10 , the fluid power device includes 2 independent working units to form a two-stage drive structure, that is, 2 fluid channels are arranged circumferentially on the core body 3. Each fluid channel includes a fluid inlet channel 31 with 1 or more stages and a secondary impulse channel 300 and is arranged circumferentially along the core body 3 and a fluid discharge channel. The fluid power device includes an outer ring 1, and a plurality of driving recesses 11 are provided on the inner circumferential surface thereof in the circumferential direction; a core body 3, which is coaxially arranged inside the outer ring 1 and can rotate relative to the outer ring. A plurality of groups of nozzles, discharge ports are provided on the outer circumferential surface of the core body, and at least one secondary impulse channel is provided between each group of nozzles and discharge ports; 2 fluid inlet channels 31, 32 are provided on the core body, which correspondingly communicate with the nozzles; and 2 fluid discharge channels 310, 320, which correspondingly communicate with the discharge ports; two fluids enter from the 2 fluid inlet channels of the core body respectively, and are ejected step by step through the nozzles and the secondary impulse channels 300 of the core body 3, acting on the corresponding driving recesses 11 on the outer ring in the circumferential direction, generating a thrust on these driving recesses to push the outer ring 1 to rotate and do work, realizing power output. Finally, the fluid is discharged through the discharge port of the core body through the fluid discharge channel. The above-mentioned one fluid inlet channel, one nozzle, the corresponding number of driving recesses, and the corresponding secondary impulse channel, discharge port, and one fluid discharge channel form an independent working unit.

[0071] The hydrodynamic device further includes a shaft 2. The outer ring 1 and the core 3 are coaxially arranged on the shaft. Fluid inlet channels 21, 22 and fluid discharge channels 210, 220 are formed on the shaft 2 and are respectively communicated with the fluid inlet channels 31, 32 and the fluid discharge channels 310, 320 of the core. Two fluid inlets and two fluid outlets corresponding to the fluid channels are provided on the shaft 2. Compressed fluid enters from the two fluid inlets of the shaft 2, sprays out through the fluid inlet channels of the core 3 and acts on the driving recesses 11 of the outer ring 1, generating a thrust to drive the outer ring 1 to rotate and do work. Finally, the compressed fluid returns to the corresponding fluid outlets through the fluid discharge channels of the core 3, realizing continuous output of power. Other structures are the same as those in Embodiment 1 and will not be described in detail.

[0072] Embodiment 3: The hydrodynamic device of the present invention includes 4 or more independent working units to form a multi-stage driving structure. Along the circumferential direction of the core, 3 or more fluid channels are arranged. Each fluid channel includes a fluid inlet channel with more than 1 stage and a secondary flow channel, and is arranged along the circumferential direction of the core, as well as a fluid discharge channel. The fluid inlet channels and the fluid discharge channels are arranged on the mating surfaces of the left and right cores. Fluid inlet channels and fluid discharge channels corresponding to the number of fluid channels are provided on the shaft. Compressed fluid enters from the fluid inlet channels of the shaft, sprays out through the fluid inlet channels of the core and acts on the driving recesses of the outer ring, driving the outer ring to rotate and do work, realizing continuous output of power. Finally, the compressed fluid returns to the corresponding fluid discharge channels through the respective fluid discharge channels of the core. Other structures are the same as those in Embodiment 1.

[0073] Embodiment 4:

[0074] The difference between this embodiment and Embodiment 1 is that the pumping system is a positive displacement air pump or a positive displacement liquid pump, and the piston in the positive displacement air pump or the positive displacement liquid pump is driven by the outer ring on the hydrodynamic device.

[0075] Embodiment 5:

[0076] The difference between this embodiment and Embodiment 1 is that the pumping system is a pneumatic peristaltic pumping system or a hydraulic peristaltic pumping system, and the squeezing rollers in the pneumatic peristaltic pumping system or the hydraulic peristaltic pumping system are driven by the outer ring on the hydrodynamic device.

[0077] Although the present invention is specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all are within the protection scope of the present invention.

Claims

1. A pumping system, characterized in that: it includes a pump housing, a pumping execution component, and a fluid power device arranged inside the pump housing. The fluid power device drives the pumping execution component to perform a pumping action. The fluid power device includes: an outer ring, on the inner circumferential surface of which there are provided a plurality of driving recesses in the circumferential direction; each driving recess has a contour bottom surface and a driving surface, and the contour line of the contour bottom surface is a logarithmic spiral, and its pole is set at the center of the core; a core, which is coaxially arranged inside the outer ring and can rotate relative to the outer ring. On the outer circumferential surface of the core, there are provided at least one nozzle, at least one discharge port, and at least one secondary flow channel located between the nozzle and the discharge port; at least one fluid inlet channel, which communicates with at least one nozzle; its trend is an arc line extending from the middle to the outside, and the nozzle communicates with the corresponding driving recess of the outer ring to form a first-stage flow channel; and at least one fluid discharge channel, which communicates with at least one discharge port; The fluid inlet channel and the fluid discharge channel are formed inside the core. The nozzle and the secondary flow channel on the core communicate with the corresponding driving recesses of the outer ring, and the secondary flow channel is arranged along the circumferential direction of the core or the outer ring; the trend of the fluid inlet channel on the core is a logarithmic spiral extending from the middle to the outside, and the pole of the logarithmic spiral is set on the central axis of the core, and the trend angle of the logarithmic spiral is 15° - 45°; The secondary flow channel, its trend is an arc line that bends and extends from the edge of the core to the inside and then to the edge again. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, and forms an N-stage flow channel along the circumferential direction of the core, where N is a natural number greater than or equal to 2; each stage of the flow channel cooperates with the corresponding driving recess of the outer ring to form a multi-stage stroke structure with decreasing fluid energy; The fluid enters from the fluid inlet channel, and is ejected step by step through the nozzles and the secondary flow channels of the core, acting on at least two driving recesses on the circumferential direction of the outer ring, generating a thrust on these driving recesses to push the outer ring to rotate and do work, realizing power output to the pumping execution component. Finally, the fluid is discharged through the discharge port of the core through the fluid discharge channel.

2. The pumping system according to claim 1, characterized in that: at least one fluid inlet channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one discharge port, and at least one fluid discharge channel form an independent working unit, and the fluid power device includes at least one independent working unit.

3. The pumping system according to claim 1, characterized in that: The fluid power device further includes a shaft, the outer ring and the core are coaxially arranged on the shaft, and the shaft is provided with inlet and outlet fluid channels that communicate with the fluid inlet channel and the fluid discharge channel of the core respectively.

4. The pumping system according to claim 2, characterized in that: The fluid power device includes more than two independent working units to form a multi-stage driving structure, and is arranged along the circumferential direction of the core or the outer ring.

5. The pumping system according to claim 1, characterized in that: The pumping system is a pneumatic centrifugal pumping system, a hydraulic centrifugal pumping system, a pneumatic piston pumping system, a hydraulic piston pumping system, a pneumatic peristaltic pumping system or a hydraulic peristaltic pumping system.

6. The pumping system according to claim 5, characterized in that: The outer ring of the hydrodynamic device is drivingly connected to the pumping execution assembly through a flange; or the outer ring of the hydrodynamic device is drivingly connected to the pumping execution assembly through a speed reduction mechanism; or the outer ring of the hydrodynamic device directly drives the pumping execution assembly as the rotor of the pumping execution assembly.

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