A water-oxygen mixing device for radio frequency oxygen therapy apparatus

Abstract

The present invention relates to the technical field of gas-water mixing equipment. The present invention discloses a water-oxygen mixing device for a radio frequency oxygen therapy apparatus, which includes a mixing device, a radio frequency controller, a radio frequency oxygen therapy apparatus and an oxygen supply device. The radio frequency controller is mounted above the mixing device, and the radio frequency oxygen therapy apparatus is arranged on the side of the radio frequency controller. The mixing device includes an oxygen buffer tank, a water inlet tank, a mixing pump, a temperature control device and a water-oxygen tank. A motor for driving the mixing pump is arranged below the water-oxygen tank, wherein the oxygen supply device is connected to the oxygen buffer tank pipeline, the water inlet tank is connected to an external water source, and the water-oxygen tank provides a water-oxygen mixed liquid to the radio frequency oxygen therapy apparatus. The advantages of the present invention over the prior art are: the present invention can mix oxygen with water in the form of bubbles, and can still carry a certain amount of oxygen when the oxygen in the water is dissolved saturated, thereby improving the working effect of the radio frequency oxygen therapy apparatus. In addition, the present invention also has the ability to regulate temperature and pressure, and increases the solubility of oxygen in water by lowering the temperature and increasing the pressure.

Description

Technical Field

[0001] The invention relates to the technical field of gas-water mixing equipment, and in particular to a water-oxygen mixing device for a radio frequency oxygen therapy apparatus. Background Art

[0002] Radiofrequency oxygen therapy device is a non-surgical skin tightening, wrinkle removal and body shaping equipment that combines multiple technologies such as dynamic oxygen, radio frequency, electric waves, oxygen supplementation and collagen regeneration. In addition to providing radio frequency, it also requires a water-oxygen mixture when working. Most common radiofrequency oxygen therapy devices only dissolve oxygen by passing oxygen into water. Due to the low solubility of oxygen in water at normal temperature and pressure, this method has poor solubility and the skin tightening, wrinkle removal and body shaping effects are not ideal.

[0003] Currently, there are few mixing devices in this field on the market, but the mixing of water and oxygen can be compared to the mixing of ozone and water, such as a direct-flow ozone water mixing device and an ozone water mixing method disclosed in CN109806785A, which reduces the diameter of insoluble ozone bubbles in water through the shear effect of the pump when it is working, and disperses them in the water in the form of microbubbles to improve the ability of water to carry ozone. However, this type of device is not designed for radio frequency oxygen therapy devices, and the mixing method is relatively simple. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the oxygen content in the water-oxygen liquid provided by the existing radio frequency oxygen therapy apparatus is relatively low, and a water-oxygen mixing device for a radio frequency oxygen therapy apparatus is provided.

[0005] To solve the above technical problems, the technical solution provided by the present invention is: a water-oxygen mixing device for a radio frequency oxygen therapy device, which includes a mixing device, a radio frequency controller, a radio frequency oxygen therapy device and an oxygen supply device, the radio frequency controller is mounted above the mixing device, the radio frequency oxygen therapy device is arranged on the side of the radio frequency controller, and the oxygen supply device is arranged outside the mixing device. The mixing device includes an oxygen buffer tank, a water inlet tank, a mixing pump, a temperature control device and a water-oxygen tank, and a motor for driving the mixing pump is provided under the water-oxygen tank, wherein the oxygen supply device is connected to the oxygen buffer tank pipeline, the water inlet tank is connected to an external water source, and the water-oxygen tank provides a water-oxygen mixed liquid to the radio frequency oxygen therapy device.

[0006] A jet pump is arranged at the bottom of the mixing pump, and a volute is arranged at the top. The jet pump outlet is connected with the mixing pump inlet, and the mixing pump outlet is connected with the volute inlet. The volute is provided with multiple outlets. The jet pump is sleeved inside the water inlet tank, and the jet pump inlet is sleeved with the water inlet tooling. An oxygen nozzle is arranged at the center of the water inlet tooling. The oxygen nozzle and the water inlet tooling extend into the jet pump, and multiple vortex generating wings are arranged around the end of the water inlet tooling.

[0007] A vortex ring generator is arranged at the center of the diffusion section of the jet pump. The vortex ring generator is composed of an outer ring guide ring and an inner ring guide ring. The outer ring guide ring and the inner ring guide ring are arranged at intervals. A plurality of diffusion wings are arranged in the gap between the outer ring guide ring and the inner ring guide ring. The outer ring guide ring is inwardly convergent from bottom to top, and the inner ring guide ring is outwardly diffused from bottom to top, and the top of the inner ring guide ring is higher than the top of the outer ring guide ring.

[0008] Furthermore, a conical impeller is rotatably arranged at the bottom of the mixing pump, a rectifying impeller is fixedly sleeved on the top of the mixing pump, a plurality of stator impellers are arranged on the top of the rectifying impeller, a first centrifugal impeller is rotatably arranged between the plurality of stator impellers, and a second centrifugal impeller is rotatably arranged in the volute.

[0009] Furthermore, the conical impeller, the first centrifugal impeller and the second centrifugal impeller are coaxially connected to each other in terms of power, and the motor is connected to the second centrifugal impeller in terms of power.

[0010] Furthermore, the flow diversion direction of the rectifying impeller and the stator impeller is opposite to that of the first centrifugal impeller, the inlet of the rectifying impeller and the stator impeller is arranged at the bottom outer ring, and the outlet is arranged at the top inner ring, and the inlet of the first centrifugal impeller is arranged at the bottom inner ring, and the outlet is arranged at the top outer ring.

[0011] Furthermore, a plurality of temperature control devices are provided on the outside of the mixing pump, and the temperature control devices include a semiconductor heat pump, a heat pipe fin radiator and a water cooling tooling. The heat pipe fin radiator is fitted on the hot end of the semiconductor heat pump, a fan is provided on the outside of the heat pipe fin radiator, and the water cooling tooling is fitted on the cold end of the semiconductor heat pump.

[0012] Furthermore, the water-cooling tooling is provided with multiple layers of baffles inside, multiple layers of spaced micro-fins are arranged between the multiple layers of baffles, a cover plate is arranged on the side of the water-cooling tooling, a water inlet is arranged in the middle of the cover plate, and water outlets are arranged on the upper and lower sides respectively, and the water inlet is connected to the volute outlet.

[0013] Furthermore, a reflux inlet and a reflux valve are provided at the top of the water inlet tank, a water oxygen tank inlet valve is provided at the bottom of the water oxygen tank, the bottom outlet of the cover plate is connected to the reflux valve, and the top outlet is connected to the water oxygen tank inlet valve.

[0014] Furthermore, an oxygen exhaust valve is provided on the top of the oxygen buffer tank, and the oxygen nozzle is connected to the oxygen exhaust valve.

[0015] The advantages of the present invention over the prior art are that the present invention can mix oxygen with water in the form of bubbles, and when the oxygen in the water is saturated, it can still carry a certain amount of oxygen, thereby improving the working effect of the radio frequency oxygen therapy device. In addition, the present invention also has the ability to regulate temperature and pressure, and increases the solubility of oxygen in water by lowering the temperature and increasing the pressure, so that the water in the radio frequency oxygen therapy device can dissolve more oxygen.

[0016] In order to achieve the above advantages, the present invention provides the following structure:

[0017] A special jet pump is used, which has a vortex generating vane before the throat, which can produce a detached vortex to stir the fluid, so that oxygen is mixed with water in the form of bubbles.

[0018] The specially made jet pump is equipped with a vortex ring generator behind the throat, which can generate a vortex ring in the fluid to stir the fluid, so that the fluid at the edge of the jet pump and the fluid at the center axis are mixed, further improving the dispersion of oxygen bubbles in the water.

[0019] A multi-stage series shear centrifugal pump is provided to shear oxygen bubbles in a water-oxygen mixed liquid mixed by a jet pump, reduce the bubble diameter, and make the oxygen dispersed more evenly.

[0020] A semiconductor heat pump is used to cool the water-oxygen mixture. The semiconductor heat pump exchanges heat with the water-oxygen mixture through a water inlet fixture. The water inlet fixture can divert the water-oxygen mixture. By returning part of the low-temperature water-oxygen mixture to the inlet of the jet pump, the solubility of oxygen in water in the jet pump is increased, further improving the dissolution effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of the mixing device of the present invention.

[0023] Figure 3 It is a schematic diagram of the composition of the mixing device of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the mixing pump and the water inlet tank of the present invention.

[0025] Figure 5 It is a schematic diagram of the explosion structure of the mixing pump of the present invention.

[0026] Figure 6 It is a schematic cross-sectional structure diagram of the mixing pump and the jet pump of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the jet pump of the present invention.

[0028] Figure 8 yes Figure 7 Schematic diagram of the structure at A in the middle.

[0029] Fig. 9 yes Figure 7 Schematic diagram of the structure at B in the figure.

[0030] Fig.10 It is a structural schematic diagram of the temperature control device of the present invention.

[0031] Fig.11 It is a structural schematic diagram of the water cooling tooling of the present invention.

[0032] Fig.12 It is a schematic diagram of the fluid flow direction of the mixing pump and the jet pump of the present invention.

[0033] Fig.13 It is a schematic diagram of the vortex generating wing of the present invention.

[0034] Fig.14 Schematic diagram of the vortex ring generator of the present invention.

[0035] As shown in the figure: 1. Mixing device; 2. Radio frequency controller; 3. Radio frequency oxygen therapy device; 4. Oxygen supply device; 5. Oxygen buffer tank; 6. Water inlet tank; 7. Mixing pump; 8. Temperature control device; 9. Motor; 10. Water oxygen tank; 11. First pressure sensor; 12. Oxygen supply valve; 13. Oxygen exhaust valve; 14. Reflux valve; 15. Second pressure sensor; 16. Temperature sensor; 17. Jet pump; 18. Conical impeller; 19. Rectifier impeller; 20. First centrifugal impeller; 2 1. Stator impeller; 22. Second centrifugal impeller; 23. Volute; 24. Oxygen nozzle; 25. Water inlet tooling; 26. Vortex generating wing; 27. Vortex ring generator; 28. Outer ring guide ring; 29. ​​Inner ring guide ring; 30. Diffuser wing; 31. Water cooling tooling; 32. Semiconductor heat pump; 33. Heat pipe fin radiator; 34. Fan; 35. Water oxygen tank inlet valve; 36. Baffle; 37. Micro fin; 38. Cover plate; 39. Water inlet; 40. Water outlet. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] Combined with Figure 1 , Attachment Figure 2 and attached Figure 3 A water-oxygen mixing device for a radio frequency oxygen therapy device comprises a mixing device 1, a radio frequency controller 2, a radio frequency oxygen therapy device 3 and an oxygen supply device 4, wherein the radio frequency controller 2 is mounted above the mixing device 1, the radio frequency oxygen therapy device 3 is arranged on the side of the radio frequency controller 2, and the oxygen supply device 4 is arranged outside the mixing device 1. The oxygen supply device 4 can be an oxygen cylinder or an oxygen generator. The mixing device 1 comprises an oxygen buffer tank 5, a water inlet tank 6, a mixing pump 7, a temperature control device 8 and a water-oxygen tank 10. A motor 9 for driving the mixing pump 7 is arranged below the water-oxygen tank 10, wherein the oxygen supply device 4 is connected to the oxygen buffer tank 5 through a pipeline, the water inlet tank 6 is connected to an external water source, and the water-oxygen tank 10 provides a water-oxygen mixed liquid to the radio frequency oxygen therapy device 3.

[0038] Combined with Figure 4 , Attachment Figure 5 and attached Figure 6A jet pump 17 is arranged at the bottom of the mixing pump 7, and a volute 23 is arranged at the top. The outlet of the jet pump 17 is communicated with the inlet of the mixing pump 7, and the outlet of the mixing pump 7 is communicated with the inlet of the volute 23. The volute 23 is provided with multiple outlets. The jet pump 17 is sleeved inside the water inlet tank 6, and the inlet of the jet pump 17 is sleeved with the water inlet tooling 25. An oxygen nozzle 24 is arranged at the center of the water inlet tooling 25. The oxygen nozzle 24 and the water inlet tooling 25 extend into the interior of the jet pump 17, and a plurality of vortex generating wings 26 are arranged around the end of the water inlet tooling 25.

[0039] Combined with Figure 3 and attached Fig.10 The oxygen nozzle 24 is provided with oxygen by the oxygen buffer tank 5. An oxygen exhaust valve 13 is provided on the top of the oxygen buffer tank 5 to communicate with the oxygen nozzle 24, and an oxygen supply valve 12 is provided to communicate with the oxygen supply device 4. At the same time, a first pressure sensor 11 is provided to adjust the opening of the oxygen exhaust valve 13 and the oxygen supply valve 12 to adjust the pressure in the oxygen buffer tank 5.

[0040] Combined with Figure 7 , Attachment Figure 8 and attached Fig.13 The interior of the jet pump 17 is arranged in a venturi tube shape, and the oxygen nozzle 24 and the vortex generating wing 26 extend from the bottom to below the throat of the venturi tube.

[0041] A high-speed oxygen flow is introduced into the jet pump 17 through the oxygen nozzle 24 to drive the fluid in the jet pump 17 to flow in the same direction, so that the water in the water inlet tank 6 is sucked into the jet pump 17 through the water inlet tooling 25 and flows upward synchronously with the oxygen flow. Due to the characteristics of the jet pump 17, the water-oxygen mixed fluid is decompressed and accelerated in the venturi tubular throat of the jet pump 17, further sucking the fluid below the venturi tubular throat.

[0042] Since oxygen enters from the center of the jet pump 17 and water enters from the periphery, there is a certain degree of stratification in the device. Fig.13 As shown, H refers to oxygen flow and I refers to water flow.

[0043] When the mixed fluid flows through the vortex generating wing 26, the vortex generating wing 26 pushes the fluid through its outer contour, forcing the fluid to form an adhering vortex at the end of the wing tip. Fig.13 The detached vortex shown at G in the middle is pushed by the fluid in the jet pump 17 to continuously extend upward, causing the fluid in the extended area of ​​the vortex to rotate synchronously, forcing the oxygen that is not dissolved in the water flow to be mixed, and the insoluble oxygen is dispersed in the water flow in the form of larger bubbles.

[0044] Combined with Figure 7 , Attachment Fig. 9 and attached Fig.14A vortex ring generator 27 is arranged at the center of the diffusion section of the jet pump 17. The vortex ring generator 27 is composed of an outer ring guide ring 28 and an inner ring guide ring 29. The outer ring guide ring 28 and the inner ring guide ring 29 are arranged at intervals. A plurality of diffusion wings 30 are arranged at intervals between the outer ring guide ring 28 and the inner ring guide ring 29. The outer ring guide ring 28 is inwardly converging from bottom to top, and the inner ring guide ring 29 is outwardly diffusing from bottom to top, and the top of the inner ring guide ring 29 is higher than the top of the outer ring guide ring 28.

[0045] When the mixed fluid passes through the vortex ring generator 27, the fluid near the inner wall of the jet pump 17 and the fluid at the central axis can pass directly, while the fluid at other positions will enter the gap between the outer ring guide ring 28 and the inner ring guide ring 29. Fig.14 The fluid at this location is pushed by the contours of the outer ring guide ring 28 and the inner ring guide ring 29, deflected outward and leaves the top of the vortex ring generator 27. The deflected fluid merges with the fluid that directly passes through the outer ring of the vortex ring generator 27 and forms a fluid structure as shown in the figure below due to different flow directions. Fig.14 The local vortex shown at J is continuously pushed and extended upward. Since the vortex ring generator 27 has an overall annular contour, the above vortex finally converges to form a vortex ring. Since the vortex ring is formed between the outer ring fluid of the jet pump 17 and the central axis fluid, the vortex ring can drive the fluids on both sides to rotate and further mix.

[0046] Combined with Figure 5 , Attachment Figure 6 and attached Fig.12 A conical impeller 18 is rotatably arranged at the bottom of the mixing pump 7, a rectifying impeller 19 is fixedly sleeved at the top of the mixing pump 7, a plurality of stator impellers 21 are arranged on the top of the rectifying impeller 19, a first centrifugal impeller 20 is rotatably arranged between the plurality of stator impellers 21, a second centrifugal impeller 22 is rotatably arranged in the volute 23, the conical impeller 18, the first centrifugal impeller 20 and the second centrifugal impeller 22 are coaxially connected to each other, the motor 9 is dynamically connected to the second centrifugal impeller 22, the rectifying impeller 19 and the stator impeller 21 have a flow direction opposite to that of the first centrifugal impeller 20, the inlets of the rectifying impeller 19 and the stator impeller 21 are arranged at the bottom outer ring, and the outlets are arranged at the top inner ring, the inlet of the first centrifugal impeller 20 is arranged at the bottom inner ring, and the outlet is arranged at the top outer ring.

[0047] Combined with Fig.12, where D refers to the incoming water flow, E refers to the oxygen flow, and F refers to the mixed liquid flow. The mixing pump 7 sucks the water-oxygen mixed fluid in the jet pump 17 through the conical impeller 18 and continues to transport it upward to the rectifying impeller 19. The conical impeller 18 discharges the fluid from the outer side of its top through its contour and merges into the inlet of the rectifying impeller 19. The fluid is deflected in the rectifying impeller 19 and then gathered at its top outlet and is sucked by the first centrifugal impeller 20 and discharged to the stator impeller 21. The fluid is deflected again in the stator impeller 21 and then enters the first centrifugal impeller 20 on the upper layer and repeats the deflection until it enters the volute 23 and is discharged by the second centrifugal impeller 22.

[0048] When the water-oxygen mixed fluid passes through the first centrifugal impeller 20 and the stator impeller 21, the flow direction changes repeatedly and is continuously sheared, and the diameter of the oxygen bubbles in the mixed liquid is continuously reduced, so that the insoluble oxygen can be further diffused in the water.

[0049] Combined with Fig.10 and attached Fig.11 A plurality of temperature control devices 8 are arranged on the outside of the mixing pump 7, and the temperature control device 8 includes a semiconductor heat pump 32, a heat pipe fin radiator 33 and a water cooling tooling 31. The heat pipe fin radiator 33 is fitted on the hot end of the semiconductor heat pump 32, and a fan 34 is arranged on the outside of the heat pipe fin radiator 33. The water cooling tooling 31 is fitted on the cold end of the semiconductor heat pump 32. A plurality of baffles 36 are arranged inside the water cooling tooling 31, and a plurality of micro fins 37 with intervals are arranged between the plurality of baffles 36. A cover plate 38 is arranged on the side of the water cooling tooling 31, and a water inlet 39 is arranged in the middle of the cover plate 38, and water outlets 40 are arranged on the upper and lower sides respectively, and the water inlet 39 is connected to the outlet of the volute 23.

[0050] As attached Fig.11 As shown, the water-oxygen mixture discharged from the second centrifugal impeller 22 enters the water-cooling fixture 31 in the direction shown by C in the figure, and the mixture flows through the micro-fins 37 for heat exchange. Since the water-cooling fixture 31 is closely attached to the cold end of the semiconductor heat pump 32, the temperature of the mixture decreases after passing through.

[0051] Combined with Figure 3 and attached Fig.10 A reflux inlet is provided at the top of the water inlet tank 6 and a reflux valve 14 is set, a water oxygen tank inlet valve 35 is provided at the bottom of the water oxygen tank 10, the bottom outlet of the cover plate 38 is connected to the reflux valve 14, and the top outlet is connected to the water oxygen tank inlet valve 35, an oxygen exhaust valve 13 is provided at the top of the oxygen buffer tank 5, and the oxygen nozzle 24 is connected to the oxygen exhaust valve 13.

[0052] The partially cooled mixed liquid returns to the water inlet tank 6 through the reflux valve 14, is mixed with the water without dissolved oxygen, and is cooled. This part of the liquid enters the jet pump 17 and the post-mixing pump 7. Since the temperature is lower and it carries oxygen bubbles, it can further dissolve oxygen while reducing the oxygen intake of the oxygen nozzle 24.

[0053] Another part of the mixed liquid after cooling enters the water-oxygen tank 10 through the water-oxygen tank inlet valve 35. The water-oxygen tank 10 should select a pressure-resistant and heat-insulating tank body to store the water-oxygen mixed liquid.

[0054] Combined with Figure 3 and attached Fig.10 The water-oxygen tank 10 is provided with a second pressure sensor 15 and a temperature sensor 16. The power of the semiconductor heat pump 32 is adjusted in real time according to the reading of the temperature sensor 16 to ensure that the temperature in the water-oxygen tank 10 is maintained slightly higher than the freezing point of water. The reflux valve 14 and the water-oxygen tank inlet valve 35 control the opening to adjust the flow rate of the low-temperature water-oxygen mixture distributed to the water inlet tank 6 and the water-oxygen tank 10, thereby adjusting the pressure in the water-oxygen tank 10.

[0055] The solubility of oxygen in water can be increased by lowering the temperature and increasing the pressure in the water oxygen tank 10, and the oxygen bubbles mixed into the water in the jet pump 17 and the mixing pump 7 can be further dissolved in the water.

[0056] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by it, and does not deviate from the purpose of the invention, and does not creatively design a structure and implementation method similar to the technical solution, they should all fall within the protection scope of the present invention.

Claims

1. A water-oxygen mixing device for a radio frequency oxygen therapy apparatus, comprising a mixing device (1), a radio frequency controller (2), a radio frequency oxygen therapy apparatus (3) and an oxygen supply device (4), wherein the radio frequency controller (2) is mounted above the mixing device (1), the radio frequency oxygen therapy apparatus (3) is arranged on the side of the radio frequency controller (2), and the oxygen supply device (4) is arranged outside the mixing device (1), the mixing device (1) comprises an oxygen buffer tank (5), a water inlet tank (6), a mixing pump (7), a temperature control device (8) and a water-oxygen tank (10), a motor (9) for driving the mixing pump (7) is arranged below the water-oxygen tank (10), wherein the oxygen supply device (4) is connected to the oxygen buffer tank (5) by a pipeline, the water inlet tank (6) is connected to an external water source, and the water-oxygen tank (10) provides a water-oxygen mixed liquid to the radio frequency oxygen therapy apparatus (3), characterized in that: The mixing pump (7) is provided with a jet pump (17) at the bottom and a volute (23) at the top. The outlet of the jet pump (17) is communicated with the inlet of the mixing pump (7), and the outlet of the mixing pump (7) is communicated with the inlet of the volute (23). The volute (23) is provided with a plurality of outlets. The jet pump (17) is sleeved inside the water inlet tank (6). The inlet of the jet pump (17) is sleeved with a water inlet tooling (25). An oxygen nozzle (24) is provided at the center of the water inlet tooling (25). The oxygen nozzle (24) and the water inlet tooling (25) extend into the interior of the jet pump (17). A plurality of vortex generating wings (26) are provided around the end of the water inlet tooling (25). A vortex ring generator (27) is arranged at the center of the diffusion section of the jet pump (17). The vortex ring generator (27) is composed of an outer ring guide ring (28) and an inner ring guide ring (29). The outer ring guide ring (28) and the inner ring guide ring (29) are arranged at intervals. A plurality of diffusion wings (30) are arranged in the gap between the outer ring guide ring (28) and the inner ring guide ring (29). The outer ring guide ring (28) is inwardly converging from bottom to top, and the inner ring guide ring (29) is outwardly diffusing from bottom to top. The top of the inner ring guide ring (29) is higher than the top of the outer ring guide ring (28).

2. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 1, characterized in that: A conical impeller (18) is rotatably disposed at the bottom of the mixing pump (7), a rectifying impeller (19) is fixedly sleeved on the top of the conical impeller (18), a multi-layer stator impeller (21) is disposed on the top of the rectifying impeller (19), a first centrifugal impeller (20) is rotatably disposed inside the multi-layer stator impeller (21), and a second centrifugal impeller (22) is rotatably disposed inside the volute (23).

3. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 2, characterized in that: The conical impeller (18), the first centrifugal impeller (20) and the second centrifugal impeller (22) are coaxially connected in power, and the motor (9) is connected in power to the second centrifugal impeller (22).

4. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 2, characterized in that: The rectifying impeller (19) and the stator impeller (21) have flow directions opposite to those of the first centrifugal impeller (20); the inlets of the rectifying impeller (19) and the stator impeller (21) are arranged at the bottom outer ring, and the outlets are arranged at the top inner ring; the inlet of the first centrifugal impeller (20) is arranged at the bottom inner ring, and the outlet is arranged at the top outer ring.

5. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 1, characterized in that: A plurality of temperature control devices (8) are arranged outside the mixing pump (7), and the temperature control devices (8) include a semiconductor heat pump (32), a heat pipe fin radiator (33), and a water cooling tool (31). The heat pipe fin radiator (33) is fitted to the hot end of the semiconductor heat pump (32), a fan (34) is arranged outside the heat pipe fin radiator (33), and the water cooling tool (31) is fitted to the cold end of the semiconductor heat pump (32).

6. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 5, characterized in that: The water-cooling tooling (31) is provided with a plurality of baffles (36) inside, and a plurality of spaced micro-fins (37) are provided between the plurality of baffles (36). A cover plate (38) is provided on the side of the water-cooling tooling (31), a water inlet (39) is provided in the middle of the cover plate (38), and water outlets (40) are provided on the upper and lower sides respectively, and the water inlet (39) is connected to the outlet of the volute (23).

7. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 6, characterized in that: The top of the water inlet tank (6) is provided with a reflux inlet and a reflux valve (14); the bottom of the water oxygen tank (10) is provided with a water oxygen tank inlet valve (35); the bottom water outlet (40) of the cover plate (38) is connected to the reflux valve (14); the top water outlet (40) is connected to the water oxygen tank inlet valve (35).

8. A water-oxygen mixing device for radiofrequency oxygen therapy according to claim 1, characterized in that: An oxygen exhaust valve (13) is provided on the top of the oxygen buffer tank (5), and the oxygen nozzle (24) is in communication with the oxygen exhaust valve (13).

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