CN110833934B

CN110833934B - Fluid driven centrifuge

Info

Publication number: CN110833934B
Application number: CN201810944551.1A
Authority: CN
Inventors: 许水电; 李延福; 许涛
Original assignee: Tranf Technology Xiamen Co ltd
Current assignee: Tranf Technology Xiamen Co ltd
Priority date: 2018-08-19
Filing date: 2018-08-19
Publication date: 2025-01-17
Anticipated expiration: 2038-08-19
Also published as: CN110833934A

Abstract

The invention discloses a fluid driven centrifugal machine, which uses fluid, such as hydraulic oil, water or compressed air, as energy sources to drive a separation device to move, and has the advantages of simple structure, large torque, high rotating speed, high transmission efficiency, low energy consumption and small vibration, and can well meet the requirements of the centrifugal machine on torque, rotating speed and running stability; meanwhile, the fluid power device comprises an outer ring and a core body, at least one order of more than one secondary flushing channel is arranged between a nozzle and a discharge opening of the outer ring surface of the core body, fluid enters from the inlet channel, is sprayed out step by step through the nozzle and the secondary flushing channel of the core body, acts on at least two driving concave parts on the circumference of the outer ring, generates thrust to the driving concave parts to push the outer ring to rotate for acting, realizes power output, and finally, the fluid is discharged through the discharge opening of the core body and the discharge channel.

Description

Fluid driven centrifuge

Technical Field

The invention discloses a fluid driven centrifuge, which belongs to the technical field of industrial mechanical devices according to the International Patent Classification (IPC).

Background

The existing various centrifuges mostly adopt an engine and a centrifugal device, and because the centrifugal device needs higher rotating speed and larger torque when rotating at high speed, and the vibration of the engine needs to be isolated to the maximum, the existing engine, whether an electric motor or an internal combustion engine, can not well meet the actual use requirements.

The current research direction of the air pressure engine in the engine is to develop a small engine with compact structure, high efficiency and reliability, and most of the small engines are in a test, i.e. trial production stage, and have not been applied in large scale commerce. At present, most gas engine design prototypes are based on a piston engine or a vane pump, and energy conversion is realized through heating of a heat exchanger, so that power output is achieved, but the gas engine design prototypes have complex structure and low efficiency, and are difficult to meet the requirement of cruising ability.

The hydraulic energy is converted into mechanical energy mainly by a hydraulic engine and a hydraulic pump, and the hydraulic energy is mainly converted by a piston structure, a blade or a gear and the like, so that the torque and speed output is obtained. Due to the limitations of the original structure and principle, the existing device has the defects of more parts, complex structure, low efficiency and difficulty in simultaneously obtaining larger torque and rotating speed.

In order to further improve the performance of the engine and meet the working requirement of the centrifugal machine and realize the power generation and output with compact structure, high efficiency and reliability, the inventor has developed and studied for many years, so the invention is proposed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a fluid driven centrifugal machine, which utilizes the energy of fluid for multiple times through a multi-stage runner circumferentially arranged on a core body of a fluid power device, and drives a rotary outer ring through the core body to realize the output of power.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

A fluid driven centrifuge comprising a separation device and a fluid power device for driving the separation device, characterized in that the fluid power device comprises:

an outer ring, the inner ring surface of which is provided with a plurality of driving concave parts in the circumferential direction;

The core body is coaxially arranged in the outer ring and can rotate relative to the outer ring, and the outer ring surface of the core body is provided with at least one nozzle, at least one row of ports and at least one primary flushing channel positioned between the nozzle and the row of ports;

at least one inflow channel communicating with at least one nozzle, and

At least one row of flow channels communicating with the at least one row of ports;

Fluid enters from the inflow channel, is sprayed out step by step through the nozzle and the secondary flushing channel of the core body, acts on at least two driving concave parts on the circumference of the outer ring, generates thrust to the driving concave parts to push the outer ring to rotate for doing work, realizes power output, and finally, the fluid is discharged through the discharge port of the core body and the discharge channel.

Further, the at least one inflow channel, the at least one nozzle, the at least two driving concave parts, the at least one primary flushing channel, the at least one exhaust port and the at least one exhaust channel form an independent acting unit, and the fluid power device comprises at least one independent acting unit.

Further, the nozzles and the secondary flushing channels on the core body are communicated with the corresponding driving concave parts of the outer ring, the secondary flushing channels are communicated with the corresponding driving concave parts in a staggered mode in sequence, and the secondary flushing channels are arranged along the circumference of the core body or the outer ring.

Further, an inflow channel and a drainage channel are formed in the core.

Further, the core body comprises:

The inflow channel forms a nozzle on the peripheral surface of the core body, the trend of the inflow channel is an arc line extending outwards from the middle, and the nozzle is communicated with a driving concave part corresponding to the outer ring to form a first-order flow channel;

the secondary flow flushing channel is an arc line which extends from the edge of the core inwards to the edge in a bending way, each time of flow flushing channel is communicated with the front driving concave part and the rear driving concave part corresponding to the outer ring, and an N-order flow channel is formed along the circumferential direction of the core, wherein N is more than or equal to the natural number of 2;

each step of runner cooperates with the corresponding driving concave part of the outer ring to form a multi-step stroke structure with decreasing fluid energy.

Further, the secondary flushing flow passage comprises a return passage and a communicated stroke passage, wherein the return passage is communicated with the corresponding driving concave part of the outer ring, and the stroke passage is communicated with the other driving concave part.

Further, the trend of the core inflow channel is a logarithmic spiral extending outwards from the middle, the pole of the logarithmic spiral is arranged on the central axis of the core, and the trend angle of the logarithmic spiral is 15-45 degrees.

Further, the core body is provided with a flow inlet channel, the trend of the flow inlet channel is a logarithmic spiral line extending outwards from the middle, the trend of the stroke channel of the secondary flushing channel is a logarithmic spiral line, and the trend of the stroke channel logarithmic spiral line of the secondary flushing channel is approximately the same as that of the flow inlet channel logarithmic spiral line.

Further, the fluid power device further comprises a shaft, and the outer ring and the core body are coaxially arranged on the shaft.

Further, the fluid power device also comprises a shaft, the outer ring and the core body are coaxially arranged on the shaft, and the shaft is provided with an inflow channel and an outflow channel which are respectively communicated with the core body.

The shaft inlet and outlet flow channels in the shaft form an inlet and an outlet, and the inlet and outlet flow channels are of a non-communicated structure.

Further, the outer ring is matched with the shaft through the side plate to form a closed space, and the core body is arranged in the closed space and is fixedly connected with the shaft.

Further, the inflow channel, the nozzle, the driving concave part, the secondary flushing channel, the discharge port and the discharge channel in the independent acting unit form a fluid flow path.

Further, the fluid power device comprises more than two independent acting units to form a multi-stage driving structure, and the multi-stage driving structure is circumferentially arranged along the core body or the outer ring.

Further, more than 2 driving concave parts are arranged on the inner ring surface of the outer ring, each driving concave part is provided with a contour bottom surface and a driving surface, the contour line of the contour bottom surface is a logarithmic spiral line, and the pole of the contour bottom surface is arranged at the center of the core body.

Further, the separating device comprises a separating cover and a rotary impeller arranged in the separating cover, and the fluid power device is in transmission connection with the rotary impeller through a transmission mechanism, or the rotary impeller is integrally formed/fixedly connected with an outer ring of the fluid power device.

The fluid-driven centrifugal machine uses fluid, such as hydraulic oil, water or compressed air as energy sources to drive the separation device to move, has the advantages of simple structure, large torque, high rotating speed, high transmission efficiency, low energy consumption and small vibration, and can well meet the requirements of the centrifugal machine on torque, rotating speed and running stability.

The hydrodynamic device has the following beneficial effects on a fluid centrifuge:

1. the multi-stage flow channel arranged on the core body is used as a1 st-stage flow channel, each secondary flow channel is used as a2 nd, 3 rd and 4 th order flow channel, fluid acts on a driving concave part of the outer ring from the 1 st-stage flow channel, the driving concave part is communicated with the 2 nd-stage flow channel, then the fluid returns to the 2 nd-stage flow channel and then acts on another driving concave part of the outer ring, and the like until the fluid is discharged from the drainage channel, the whole process is forward along the rotation direction of the outer ring, the torque is large, the transmission efficiency is high, the fluid utilization rate is high, the output torque is further increased along with the increase of the rotation speed, and the rotation requirement of the separation device is met.

2. The flow channels circumferentially distributed on the core body effectively reduce the volume of the whole device, can be flexibly matched with power generation or output equipment in various fields, and meanwhile, the more the flow inlet channels are arranged on the core body, the lower the whole weight is, so that the output speed and efficiency of the device are further improved, the separation efficiency is higher, and the separation effect is better.

Drawings

FIG. 1 is a side view of a fluid centrifuge according to embodiment 1 of the present invention;

FIG. 2 is a partial cross-sectional view of a fluid centrifuge according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a fluid power apparatus according to embodiment 1 of the present invention.

Fig. 4 is an axial side view of a fluid dynamic device of embodiment 1 of the present invention.

Fig. 5 is a side view of the fluid dynamic device of embodiment 1 in the axial direction B of the present invention.

Fig. 6 is a cross-sectional view of a fluid dynamic device according to embodiment 1 of the present invention.

Fig. 7 is another layout of the fluid dynamic device of embodiment 1 of the present invention.

Fig. 8 is a schematic view of a fluid power apparatus according to embodiment 2 of the present invention.

Fig. 9 is a side view of the fluid dynamic device of embodiment 2 in the axial direction C of the present invention.

Fig. 10 is an axial side view of a fluid dynamic device of embodiment 2 of the present invention.

Fig. 11 is a radial sectional view of a fluid dynamic device of embodiment 2 of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

Example 1:

As shown in connection with fig. 1 and 2, this embodiment provides a fluid driven centrifuge comprising a frame 5, on each side of which a separating device 6 and a fluid power device 9 are arranged, the separating device 6 having a separating housing and a rotating impeller 7 arranged inside the separating housing, the fluid power device 9 being in driving connection with the rotating impeller 7 via a transmission 8, preferably the transmission 8 comprising a pulley assembly and a friction clutch assembly.

Referring to fig. 3 to 6, the fluid power device of this embodiment includes an outer ring 1, the inner ring surface of which is circumferentially provided with a plurality of driving recesses 11, the outer ring 1 is in driving connection with the transmission mechanism 8, a core 3 coaxially disposed in the outer ring 1 and capable of rotating relative to the outer ring, the outer ring surface of the core 3 is provided with at least one nozzle 301, at least one row of ports 302, and at least one primary flushing channel 300 between the nozzle and the outlet, the fluid used in the fluid power device is usually newtonian fluid or non-newtonian fluid, and newtonian fluid is usually selected, and the fluid pressure input into the fluid power device may be generated by a compressor (such as a hydraulic pump or a pneumatic pump), a container (such as a high-pressure air cylinder) of compressed fluid, or derived from the environment (such as water flow or wind flow), etc.

At least one inflow channel 31 in communication with at least one nozzle 301, the inflow channel 31 being in piping communication with a high pressure gas or hydraulic source of the plant for the passage of fluid;

And at least one drain channel 310 in communication with the at least one drain 302;

Fluid enters from the inflow channel 31, is sprayed out step by step through the spray nozzle 301 and the secondary flushing channel 300 of the core body 3, acts on at least two driving concave parts 11 on the circumference of the outer ring 1, generates thrust to the driving concave parts 11 to push the outer ring 1 to rotate to do work, realizes continuous power output, and finally, the fluid is discharged through the discharge channel through the discharge port of the core body 3. The fluid power device further comprises a shaft 2, and the outer ring 1 and the core body 3 are coaxially arranged on the shaft 2.

As shown in fig. 6, the inflow channel 31 and the outflow channel 310 are formed in the core 3, and the nozzle 301 and the secondary flushing channel 300 on the core 3 are communicated with the driving concave portion 11 corresponding to the outer ring 1, wherein the secondary flushing channel 300 and the corresponding driving concave portion 11 are alternately arranged and sequentially communicated, and the secondary flushing channel 300 is circumferentially arranged along the core or the outer ring.

As shown in fig. 6, the core 3 comprises a flow inlet channel 31, wherein a nozzle 31 is formed on the peripheral surface of the core, the flow inlet channel is an arc line extending outwards from the middle, and the nozzle 301 is communicated with a driving concave part 11 corresponding to the outer ring to form a1 st-order flow channel;

The secondary flushing flow channel 300 is an arc line which extends from the edge of the core body 3 inwards to the edge in a bending way, the front driving concave part 11 and the rear driving concave part 11 corresponding to the outer ring 1 are communicated with each other in each secondary flushing flow channel 300, and an N-stage flow channel is formed along the circumferential direction of the core body, wherein N is more than or equal to the natural number of 2. The flow path of the first order (inlet flow path) and the flow path of the second order (primary flow path) are included in the case of the flow path of the second order, and the flow path of the first order (inlet flow path), the flow path of the second order (primary flow path) and the flow path of the third order (other flow path) are included in the case of the flow path of the third order.

According to the load requirement, the fluid power device can be designed, wherein the core body 3 is provided with a 2-order flow channel, a 3-order flow channel or more-order flow channels, each-order circulation does work, the energy is fully utilized, the use efficiency is improved to the greatest extent, and the requirements of output torque and rotating speed are met.

Fig. 7 is a schematic diagram of a 4-stage flow channel, compressed fluid enters from a1 st stage flow channel 311, passes through 2, 3 and 4 nd stage flow channels 312, 313 and 314, and is ejected to act on the corresponding driving concave part 11, and finally the body is output through a drainage channel 310, fig. 6 is a schematic diagram of a 5-stage inflow channel, and the working process is similar to that of fig. 7. As shown in fig. 7, the secondary flushing path 300 includes a return path and a communicating stroke path, such as the return path 3131 and the communicating stroke path 3132 in the 3 rd-stage path in fig. 7, the return path 3131 communicates with the driving recess corresponding to the outer ring, and the stroke path 3132 communicates with the other driving recess.

Referring to fig. 3, the fluid power device further includes a shaft 2, the outer ring 1 and the core 3 are coaxially disposed on the shaft 2, and the shaft 2 is provided with an inlet channel 31 and an outlet channel 310, which are respectively connected to the inlet and outlet channels 21 and 210 of the core 3. The shaft inlet and outlet flow channels in the shaft form an inlet and an outlet, and the inlet and outlet flow channels are of a non-communication structure. The outer ring 1 is matched with the shaft 2 through the side plates 41 and 42 to form a closed space, and the core body 3 is arranged in the closed space and is fixedly connected with the shaft 2. In the invention, the core body 3 is provided with at least 2-stage flow channels, each stage flow channel is communicated with a corresponding driving concave part of the outer ring, and finally fluid is discharged from a drainage channel.

Referring to fig. 3, the core 3 of the present invention may be formed by matching left and right cores, the matching surfaces of the left and right cores are provided with an inflow channel 31 and a drainage channel 310, and the core 3 may be formed by integral casting.

Referring to fig. 3 and 6, in the present embodiment, a primary driving structure is formed by circumferentially arranging 1 fluid channel on a core 3, which is also called an independent working unit, and the core 3 and an inlet channel 31, a nozzle 301, at least two driving recesses 11, at least one primary flushing channel 300, a discharge port 302 and a discharge channel 310 on an outer ring 1 form an independent working unit. The inlet channel 31, the jet 301, the driving recess 11, the secondary flushing channel 300, the discharge opening 302 and the discharge channel 310 in the independent working unit constitute a fluid flow path.

Referring to fig. 3,6 or 7, in the present invention, more than 2 driving recesses 11 are provided on the inner ring surface of the outer ring 1, each driving recess has a contour bottom surface 111 and a driving surface 112, the contour line of the contour bottom surface 111 may be a common arc line or a spiral line, when the contour line of the contour bottom surface is a logarithmic spiral line, the pole of the contour bottom surface is disposed on the shaft, each driving recess 11 is simultaneously communicated with the adjacent step flow channel so that the fluid entering from the previous step flow channel is output from the next step flow channel.

In the invention, the trend of the inlet channel of the core body 3, namely the 1 st order flow channel, can be a common arc line or a spiral line, and the trend of the stroke channel in each flushing channel, namely the N order flow channel, can also be a common arc line or a spiral line.

As shown in fig. 6 and 7, the core 3 of the present invention is provided with a flow inlet channel 31, which extends from the middle to the outside and has a logarithmic spiral, the stroke path of the secondary flow channel 300 has a logarithmic spiral, and the direction of the logarithmic spiral of the stroke path of the secondary flow channel is approximately the same as that of the logarithmic spiral of the flow inlet channel. The trend of the inlet channel of the core body 3 is a logarithmic spiral extending outwards from the middle, the pole of the logarithmic spiral is arranged on the central axis of the core body, the trend angle of the logarithmic spiral is 15-45 degrees, the smaller the angle is, the longer the flow channel is, the more the loss is, the larger the angle is, and the smaller the tangential component force of the driving outer ring is.

Referring to fig. 3,4 and 5, the inlet and outlet channels 21, 210 in the shaft 2 of the present invention form an inlet and an outlet, and the inlet and outlet channels are in a non-communication structure. The inlet and outlet of the shaft may be disposed at one or both ends of the shaft, the inlet shaft channel 21 communicating with the inlet channel 31 of the core, the outlet of the shaft extending axially to form the outlet shaft channel 210, the outlet shaft channel communicating with the outlet channel 310 of the core.

The hydrodynamic device according to the present application refers to a device capable of converting fluid energy into mechanical rotation, wherein the device may additionally comprise other components besides the necessary design of the outer ring, the core and the corresponding recess structure or flow channel structure, for example, a housing and a sealing structure for providing external protection may additionally be included, and a coupling for providing torque transmission may additionally be included. The outer ring can be changed in concrete form according to different mechanical rotation output modes, for example, an external tooth-shaped structure is formed on the outer side of the outer ring so as to be beneficial to outputting kinetic energy in a gear transmission mode, for example, the outer ring is provided with a belt groove so as to output kinetic energy in a belt transmission mode, for example, the outer ring is provided with a mounting flange plate so as to be convenient for mounting a coupler to output kinetic energy, and the like. The core and the outer ring are made of hard materials, and are not limited to metals, metal alloys, plastics and composite materials, and the processing mode of the concave structures or the runner structures of the core and the outer ring can be realized by adopting all known production means, including but not limited to die casting, forging, extrusion, 3D printing and the like. The fluid pressure input to the power plant may be generated by a compressor (e.g., hydraulic or pneumatic pump), by a reservoir of compressed fluid (e.g., a high pressure gas cylinder), or from the environment (e.g., water flow, wind flow), etc.

In fig. 3 and 6, the inlet channel 31 and the outlet channel 310 of the core, the inlet shaft channel 21 and the outlet shaft channel 210 are not corresponding to each other according to the drawing rule, but for the sake of illustration, the inlet channel and the outlet channel of the core in fig. 3 are referred to as the inlet channel and the outlet channel, and fig. 8 and 11 in embodiment 2 are similar schematic views.

Example 2:

The fluid driven centrifuge of this embodiment is substantially identical to embodiment 1, with the main differences:

Referring to fig. 8 to 11, the fluid power device includes 2 independent power units to form a secondary driving structure, i.e. 2 fluid channels are circumferentially arranged on the core 3, each of the fluid channels includes an inflow channel 31 and a secondary flushing channel 300 with a level of 1 or more, and is circumferentially arranged and discharged along the core 3. The hydrodynamic device comprises an outer ring 1, a core body 3,2 groups of nozzles and outlets, at least one flushing channel between each group of nozzles and outlets, 2 inlet channels 31 and 32 which are correspondingly communicated with the nozzles, 2 outlet channels 310 and 320 which are correspondingly communicated with the outlets, and two fluids which enter from the 2 inlet channels of the core body respectively, are sprayed out step by step through the nozzles of the core body 3 and the secondary flushing channels 300, act on the corresponding driving concave parts 11 in the circumferential direction of the outer ring, generate thrust to push the outer ring 1 to rotate for doing work, realize power output, and finally are discharged through the outlet of the core body through the outlet channels. The above-mentioned one inflow channel, one nozzle, corresponding number of driving concave parts and corresponding secondary flushing channel, discharge port and one discharge channel form an independent acting unit.

The fluid power device further comprises a shaft 2, the outer ring 1 and the core 3 are coaxially arranged on the shaft, and the shaft 2 is provided with inlet flow shaft channels 21 and 22 and outlet flow shaft channels 210 and 220 which are respectively communicated with inlet flow channels 31 and 32 and outlet flow channels 310 and 320 of the core. The shaft 2 is provided with two inlet ports and two outlet ports corresponding to the fluid channels, compressed fluid enters from the two inlet ports of the shaft 2, is sprayed out from the inlet channels of the core body 3 to act on the driving concave part 11 of the outer ring 1, generates thrust to push the outer ring 1 to rotate to apply work, and finally the compressed fluid returns to the corresponding outlet ports through the outlet channels of the core body 3, so that continuous output of power is realized. Other structures are the same as those in embodiment 1, and will not be described again.

Example 3:

The embodiment is basically the same as the embodiment 1, and the main difference is that the fluid power device comprises 4 or more independent acting units to form a multi-stage driving structure, 3 or more fluid channels are arranged on the core body along the circumferential direction, each fluid channel comprises more than 1-order inflow channels and secondary flushing channels and is arranged along the circumferential direction of the core body and is provided with a drainage channel, and the inflow channels and the drainage channels are arranged on the matching surfaces of the left core body and the right core body. The shaft is provided with an inflow shaft channel and an outflow shaft channel which are in quantity corresponding to the fluid channels, compressed fluid enters from the inflow shaft channel of the shaft, is sprayed out of a driving concave part acting on the outer ring through the core inflow channel to push the outer ring to rotate to do work, continuous output of power is achieved, and finally the compressed fluid returns to the corresponding outflow shaft channel through each outflow channel of the core. The other structures are the same as those in embodiment 1.

Of course, in the fluid driven centrifuge of this embodiment, the fluid power device and the rotary impeller are in transmission connection through the transmission mechanism, and it should be understood by those skilled in the art that in other specific embodiments, the rotary impeller is integrally formed on the outer ring of the fluid power device, or the rotary impeller is directly connected to the outer ring of the fluid power device, so that the technical effect of this embodiment can be achieved.

The above description is illustrative of the embodiments using the present teachings, and is not intended to limit the scope of the present teachings to any particular modification or variation of the present teachings by those skilled in the art.

Claims

1. A fluid driven centrifuge comprising a separation device and a fluid power device for driving the separation device, characterized in that the fluid power device comprises:

The separating device comprises a separating cover and a rotary impeller arranged in the separating cover, wherein the fluid power device and the rotary impeller are in transmission connection through a transmission mechanism, or the rotary impeller is integrally formed/fixedly connected with an outer ring of the fluid power device;

at least one inflow channel communicating with at least one nozzle, and

The fluid power device comprises at least one independent acting unit, wherein the independent acting unit is formed by at least one inflow channel, at least one nozzle, at least two driving concave parts, at least one primary flushing channel, at least one row of ports and at least one row of flow channels;

The core body comprises

each step of runner is matched with the corresponding driving concave part of the outer ring to form a multi-step stroke structure with decreasing fluid energy;

2. The fluid driven centrifuge of claim 1 wherein the inlet and outlet channels are formed in the core, and wherein the nozzle and the secondary flow channel on the core are in communication with the corresponding drive recess of the outer ring, and the secondary flow channel is circumferentially disposed along the core or the outer ring.

3. The fluid driven centrifuge of claim 2 wherein the core inlet channel runs in a logarithmic spiral extending from the middle to the outside, the poles of the logarithmic spiral being disposed on the central axis of the core, the logarithmic spiral running at an angle of 15 ° -45 °.

4. The fluid driven centrifuge of claim 1 wherein the fluid dynamic device further comprises a shaft, the outer ring and the core are coaxially arranged on the shaft, and the shaft is provided with an inflow channel and an outflow channel which are respectively communicated with the core.

5. The fluid driven centrifuge of claim 1 wherein said fluid dynamic device comprises more than two independent power units forming a multi-stage driving structure and arranged circumferentially along the core or outer ring.

6. The fluid-driven centrifuge of any one of claims 1 to 5, wherein the inner annular surface of the outer ring is provided with more than 2 driving recesses, 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 the pole is arranged at the center of the core.