Ultrasonic hydrogen mixing and dissolving device

Abstract

The invention provides an ultrasonic hydrogen mixing and dissolving device. A tank body is provided with a hydrogen mixing and dissolving closed space; the liquid inlet pipe is connected to the top of the tank body and inputs quantitative drinking water into the closed space; the gas inlet pipe is connected to the bottom of the tank body and inputs quantitative hydrogen into the closed space; the liquid outlet pipe is connected to the bottom of the tank body and provided with a liquid outlet switch valve, and high-concentration hydrogen-rich water obtained after hydrogen mixing and hydrogen dissolving is output outwards from the closed space; and the circulating fusion unit is arranged in the closed space, comprises an ultrasonic mixer and is configured to drive the drinking water in the closed space to be mixed with hydrogen in a circulating flowing manner, and ultrasonic treatment is performed in the flowing circulation. The central control unit controls the circulation driving unit to drive the drinking water and the hydrogen to circularly flow and mix in the closed space; and the ultrasonic treatment unit is controlled to perform ultrasonic treatment on the drinking water and the hydrogen passing through the flow channel, so that the fusion rate and the uniformity of the hydrogen in the drinking water are effectively enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen mixing and dissolving treatment equipment, and in particular provides an ultrasonic hydrogen mixing and dissolving device. Background Art

[0002] Ultrasound is a high-frequency electromagnetic wave with a short wavelength. By focusing the hydroacoustic energy, ultrasound can produce oscillations of a certain intensity in the liquid. Ultrasound produces alternating high and low pressures in the exposed liquid. During the low-pressure cycle, ultrasound produces small vacuum bubbles in the liquid. During the high-pressure cycle, the small vacuum bubbles burst violently, and the implosion of cavitation bubbles causes strong fluid dynamic shear force. The shear force can fully mix the reactants and shorten the fusion time. The reaction process has the advantages of no pollution, low energy consumption, and high stirring efficiency, and is widely used in chemistry, biology, medicine and other fields.

[0003] At present, some preliminary explorations have been made in the use of ultrasonic technology in the mixing and dissolution of hydrogen in liquids. The common practice is to install an ultrasonic mixer on the inner wall of the tank, transport the liquid and hydrogen into the tank, and then turn on the ultrasonic mixer to apply ultrasonic treatment to the static liquid to improve the mixing of the liquid and hydrogen.

[0004] Practice has shown that although this method has a certain hydrogen dissolving effect, there are some technical problems that need to be solved. For example, when a large amount of static liquid is stored in a large tank, the mixing depth of the ultrasonic mixer alone is inconsistent. Due to the propagation mechanism of sound waves, different components in the mixture have different degrees of absorption and reflection of sound waves, and their mixing degrees are also different, resulting in uneven mixing. In addition, the contact area between hydrogen floating on the liquid surface and the liquid is small, the mixing time is long, and the ultrasonic power required is large and the power consumption is high, which increases the energy consumption of mixing capacity. Summary of the invention

[0005] Based on this, the present invention provides an ultrasonic hydrogen mixing and dissolving device to realize the mixed flow of drinking water and hydrogen in a closed container, and performs ultrasonic treatment during the mixed flow process to effectively enhance the fusion rate and uniformity of hydrogen in drinking water, improve the fusion efficiency, and reduce the process energy consumption, which is suitable for large-capacity occasions.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an ultrasonic hydrogen mixing and dissolving device, comprising a tank body, a liquid inlet pipe, an air inlet pipe, a liquid outlet pipe, a circulation fusion unit and a central control unit. The tank body is provided with a closed space for hydrogen mixing and dissolving; the liquid inlet pipe is connected to the top of the tank body and is provided with a liquid inlet switch valve, which inputs a certain amount of drinking water into the closed space; the air inlet pipe is connected to the bottom of the tank body and is provided with an air inlet switch valve, which inputs a certain amount of hydrogen into the closed space; the liquid outlet pipe is connected to the bottom of the tank body and is provided with a liquid outlet switch valve, which outputs high-concentration hydrogen-rich water after hydrogen mixing and dissolving from the closed space to the outside; the circulation fusion unit is arranged in the closed space and includes an ultrasonic mixer, which is configured to drive the drinking water and hydrogen in the closed space to circulate and mix, and perform ultrasonic treatment in the circulation channel; the central control unit is controlled and connected with the liquid inlet switch valve, the air inlet switch valve, the liquid outlet switch valve and the circulation fusion unit.

[0007] Furthermore, the circulation fusion unit includes a device arranged in the middle of the tank body in the height direction to divide the closed space into a bottom space and a top space. The circulation fusion unit includes a composite rotor and a composite stator that cooperate with each other. The composite rotor rotates around the vertical center axis to drive the high-concentration hydrogen-rich water to circulate between the bottom space and the top space. The rotating composite rotor is arranged at the center of the tank body and occupies a larger cross-sectional area of ​​the tank body, which is conducive to achieving uniform mixing of hydrogen and drinking water in the top space and the bottom space, rather than only partial mixing.

[0008] Furthermore, the composite stator includes a central cavity arranged at the bottom center position between the top plate and the bottom plate, and a tangential flow channel is arranged at the top periphery. The outer end of the tangential flow channel extends downward and is provided with an external liquid flow port arranged toward the central axis, and the inner end is provided with an internal liquid flow port; the composite rotor includes a central axis and an impeller, the impeller is connected near the middle of the central axis, and the central axis is provided with a vertically penetrating axial flow channel. The composite rotor and the composite stator are rotatably matched, the impeller is arranged in the central cavity and the outer edge is arranged relative to the external liquid flow port of the tangential flow channel, so as to realize active circulation flow between the top space and the bottom space.

[0009] Furthermore, the top air guide cover is connected to the top of the central axis, the top air guide cover is communicated with the axial flow channel and is provided with a concave cover plate with a high bottom middle and a low periphery, the concave cover plate array is arranged with upper through holes, the central axis is located below the impeller and is provided with a lower through hole communicated with the axial flow channel, the concave structure can improve the effect of hydrogen collection and reduce the escape of hydrogen outward along the edge of the cover plate.

[0010] Furthermore, a bottom tube extending downward is provided at the bottom center of the tank body, the lower end of the central axis extends into the bottom tube, a vertical ultrasonic mixer is provided in the axial flow channel, the vibration generating end of the vertical ultrasonic mixer is provided on the bottom sealing plate of the bottom tube, the vibrator extends into the axial flow channel and is higher than the lower through hole, so that all high-concentration hydrogen-rich water flowing through the axial flow channel passes through the vibrator, thereby being subjected to ultrasonic treatment and improving the fusion rate.

[0011] Furthermore, the tangential flow channels include at least two and are arranged in a circular array on the outer circumference of the central cavity, and each external liquid flow port is arranged on the outer circumference of the central cavity.

[0012] Furthermore, the driving motor is connected to the connecting seat at the center position of the upper end of the composite rotor through a rotating rod, a pressure sensor is provided on the rotating rod, and the central control unit is electrically connected to the pressure sensor signal and is configured to control the circulation fusion unit according to the detection value of the pressure sensor.

[0013] Furthermore, the front end of the intake pipe extends into the bottom pipe and is connected to an intake nozzle extending into the axial flow channel. The intake pipe is provided with a one-way valve which limits the one-way flow of gas from the intake pipe into the intake nozzle. An air pressure sensor for monitoring the air pressure is provided on the top of the tank body. The central control unit is connected to the air pressure sensor and the return air pump signal, and is configured to control the start and stop of the return air pump according to the gas pressure at the top of the enclosed space detected by the air pressure sensor.

[0014] Furthermore, a return air pipe is arranged between the top space and the bottom space of the tank body, one end of the return air pipe is connected to the top of the tank body, and the other end is connected to the air intake nozzle. The return air pipe is provided with a return air pump for driving the gas to flow toward the air intake nozzle. A liquid level sensor for detecting the liquid level is arranged on the outside of the tank body. The central control unit is connected to the liquid level sensor and the return air pump signal, and is configured to control the operation of the circulation fusion unit according to the liquid level height detected by the liquid level sensor.

[0015] Compared with the existing technology of dissolving hydrogen by setting an ultrasonic mixer on the tank wall under static liquid conditions, the technical advantages of the ultrasonic hydrogen mixing and dissolving device provided by the present invention are mainly reflected in:

[0016] 1. The central control unit controls the liquid inlet pipe and the air inlet pipe to deliver a fixed amount of drinking water and hydrogen into the closed space, and controls the circulating fusion unit to drive the drinking water and hydrogen to circulate and mix in the closed space. An ultrasonic mixer is arranged in the circulating flow channel, and ultrasonic treatment is performed on the high-concentration hydrogen-rich water passing through the relatively narrow circulating flow channel, which not only increases the contact area between hydrogen and drinking water, but also increases the relative contact area with the ultrasonic mixer, improves the uniformity of contact between drinking water and ultrasonic waves, can effectively improve the degree and uniformity of hydrogen fusion in drinking water, shorten the fusion time, improve the fusion efficiency and reduce the process energy consumption, and is suitable for large-volume mixing operations;

[0017] 2. The circulation fusion unit is provided with a composite rotor and a composite stator, and the closed space is divided into a top space and a bottom space. The impeller rotates with the composite rotor to generate centrifugal force on the high-concentration hydrogen-rich water, pushing the high-concentration hydrogen-rich water in the bottom space into the top space through the tangential flow channel, and then returning from the top space to the bottom space through the axial flow channel. By arranging vertical ultrasonic mixers in the axial flow channels of the composite rotor, ultrasonic treatment is performed separately in the circulation to achieve overall uniform mixing of the high-concentration hydrogen-rich water, which is conducive to improving the uniformity of fusion;

[0018] 3. A top flow guide connected to the axial flow channel is provided at the upper end of the composite rotor. The concave cover plate at the bottom of the top flow guide is high in the middle and low around and arranged vertically opposite to the outer liquid flow port of the tangential flow channel. Most of the hydrogen in the high-concentration hydrogen-rich water discharged from the tangential flow channel of the composite stator directly enters the top flow guide through the upper through hole of the concave cover plate under the action of buoyancy, enters the circulation flow again, and continuously mixes with the high-concentration hydrogen-rich water, avoiding the problem that a large amount of hydrogen floats to the liquid surface and cannot participate in the circulation flow again, thereby improving the fusion efficiency;

[0019] 4. A return air pipe is provided between the top space and the bottom space of the tank body, the upper end of the return air pipe is connected to the top of the tank body, and the lower end is connected to the air inlet nozzle at the bottom of the tank body, and a return air pump is provided on the return air pipe. The amount of gas escaping into the upper space is detected by monitoring the pressure or liquid level height of the upper space of the tank body. When the amount of hydrogen in the top space exceeds the set range, the air pump is turned on to return the hydrogen to the bottom space, so that the hydrogen passes through the circulation fusion unit again for the circulation fusion process, and the escaped hydrogen is supplemented to the circulation fusion unit, which solves the problem that hydrogen escapes and cannot participate in the circulation fusion process, and effectively improves the fusion degree of hydrogen in drinking water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the ultrasonic hydrogen mixing and dissolving device provided;

[0022] Figure 2 is an axial cross-sectional view of an embodiment of the ultrasonic hydrogen mixing and dissolving device provided;

[0023] Figure 3 It is a schematic diagram of the hydrogen mixing and dissolving state of the ultrasonic hydrogen mixing and dissolving device provided;

[0024] Figure 4 is a schematic diagram of the three-dimensional structure of the provided composite rotor;

[0025] Figure 5 is a three-dimensional structural schematic diagram of the provided composite rotor with part of the structure removed;

[0026] Figure 6 An axial cross-sectional view of the provided composite rotor;

[0027] Figure 7 A three-dimensional schematic diagram of a composite stator provided with a portion of its structure removed;

[0028] Figure 8 It is along Figure 7 A cross-sectional view of the AA line;

[0029] Fig. 9 It is a schematic diagram of the state in which drinking water and hydrogen circulate and mix between the composite rotor and the composite stator.

[0030] Description of the accompanying drawings:

[0031] 1-tank body, 11-bottom pipe, 12-liquid level sensor, 13-air pressure sensor;

[0032] 21-liquid inlet pipe;

[0033] 31-intake pipe, 32-intake nozzle, 33-return pipe, 34-return pump;

[0034] 4-Liquid outlet pipe;

[0035] 5-driving motor, 51-rotating rod, 52-pressure sensor;

[0036] 6-composite rotor, 61-central axis, 62-impeller, 63-top fairing, 64-upper through hole, 65-lower through hole, 66-connecting seat;

[0037] 7-composite stator, 71-top plate, 72-bottom plate, 73-external liquid flow port, 74-tangential flow channel, 75-internal liquid flow port, 76-central cavity;

[0038] 8-Vertical ultrasonic mixer.

[0039] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0040] At present, ultrasonic technology has been used in some preliminary explorations of hydrogen mixing and dissolution in liquids. The common practice is to install an ultrasonic mixer on the inner wall of the tank, transport the liquid and hydrogen into the tank, and then turn on the ultrasonic mixer to apply ultrasonic treatment to the static liquid to improve the mixing of the liquid and hydrogen. The inventor has found through long-term practice that when a large volume of static liquid is stored in a large tank, the mixing effect depth is inconsistent only by using an ultrasonic mixer. Due to the propagation mechanism of sound waves, different components in the mixture have different absorption and reflection degrees of sound waves, and their mixing degrees are also different, resulting in uneven mixing. In addition, the contact area between hydrogen floating on the liquid surface and the liquid is small, and the mixing time is long.

[0041] To this end, the inventor provides an ultrasonic hydrogen mixing and dissolving device in the present invention, wherein the tank body is provided with a closed space for hydrogen mixing and dissolving, and the circulation fusion unit is provided in the closed space and includes an ultrasonic mixer, which is configured to drive the drinking water and hydrogen in the closed space to circulate and flow and mix, and perform ultrasonic treatment in the flow cycle. The central control unit controls the circulation drive unit to drive the drinking water and hydrogen to circulate and flow and mix in the closed space; and controls the ultrasonic treatment unit to perform ultrasonic treatment on the drinking water and hydrogen passing through the flow channel, so as to realize the mixed flow of drinking water and hydrogen in the closed container, and perform ultrasonic treatment in the mixed flow process, so as to effectively enhance the fusion rate and uniformity of hydrogen in the drinking water, improve the fusion efficiency, and reduce the process energy consumption, so as to be suitable for large-capacity occasions.

[0042] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps and the composition of the materials set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0043] Embodiment 1:

[0044] like Figures 1 to 9 As shown, an ultrasonic hydrogen mixing and dissolving device provided by the present invention comprises a tank body 1, a liquid inlet pipe 21, an air inlet pipe 31, a liquid outlet pipe 4 and a circulation fusion unit, wherein the tank body 1 is provided with a closed space for hydrogen mixing and dissolving; the liquid inlet pipe 21 is connected to the top of the tank body 1 and is provided with a liquid inlet switch valve, and quantitative drinking water is input into the closed space; the air inlet pipe 31 is connected to the bottom of the tank body 1 and is provided with an air inlet switch valve, and quantitative hydrogen is input into the closed space; the liquid outlet pipe 4 is connected to the bottom of the tank body 1 and is provided with a liquid outlet switch valve, and high-concentration hydrogen-rich water after hydrogen mixing and dissolving is output from the closed space to the outside; the circulation fusion unit is arranged in the closed space and comprises an ultrasonic mixer, and is configured to drive the drinking water and hydrogen in the closed space to circulate and mix, and perform ultrasonic treatment in the circulation flow channel; a central control unit is control-connected with the liquid inlet switch valve, the air inlet switch valve, the liquid outlet switch valve and the circulation fusion unit.

[0045] During operation, the central control unit controls the liquid inlet pipe 21 and the air inlet pipe 31 to deliver a certain amount of drinking water and hydrogen into the closed space, and controls the circulating fusion unit to drive the drinking water and hydrogen to circulate and mix in the closed space. An ultrasonic mixer is arranged in the circulating flow channel to perform ultrasonic treatment on the high-concentration hydrogen-rich water passing through the relatively narrow circulating flow channel.

[0046] Based on the above embodiments, the ultrasonic hydrogen mixing and dissolving device provided not only increases the contact area between hydrogen and drinking water, but also increases the relative contact area with the ultrasonic mixer, thereby improving the uniformity of contact between water and ultrasonic waves. It can effectively improve the degree and uniformity of hydrogen fusion in drinking water, shorten the fusion time, improve the fusion efficiency and reduce the process energy consumption, and is suitable for large-volume mixing operations.

[0047] It should be noted that in Example 1 and the following embodiments, the central control unit can be an industrial computer, a PLC programmable controller, an artificial intelligence controller or other prior art automation control equipment, and the liquid inlet switch valve, air inlet switch valve and liquid outlet switch valve used are respectively electrically controlled valves, and flow meters are respectively provided on the liquid inlet pipe 21, the air inlet pipe 31 and the liquid outlet pipe 4, so that the liquid inlet amount of the mixed drinking water and the input amount of hydrogen can be accurately controlled through the control of the central control unit, and the output amount of the high-concentration hydrogen-rich water can be determined. The structural principle thereof will not be described in detail.

[0048] The ultrasonic mixer used utilizes the cavitation effect and other physical effects of ultrasound in high-concentration hydrogen-rich water to form effective stirring and flow in high-concentration hydrogen-rich water to destroy the structure of the medium and crush the particles in the liquid. It is mainly the collision between liquids, microphase flow and shock waves that cause changes in the surface morphology of particles. The ultrasonic mixer used in the present invention has a vibration generating end and a vibrator. The vibration generating part is used to generate high-frequency vibration and transmit it to the vibrator. The vibrator is a component similar to a round rod structure. The ultrasonic mixer used is commonly used industrial equipment, and its structural principle is not repeated here.

[0049] Embodiment 2:

[0050] like Figure 2 , Figure 3 and Fig. 9 As shown, the circulation fusion unit includes a device arranged in the middle of the tank body 1 in the height direction to divide the closed space into a bottom space and a top space. The circulation fusion unit includes a composite rotor 6 and a composite stator 7 that cooperate with each other. The composite rotor 6 rotates around the vertical center axis 61 to drive the high-concentration hydrogen-rich water to circulate between the bottom space and the top space.

[0051] like Figure 6 , Figure 7 and Figure 8 As shown, the composite stator 7 includes a central cavity 76 disposed at the bottom center position between the top plate 71 and the bottom plate 72, and a tangential flow channel 74 disposed at the top periphery. The outer end of the tangential flow channel 74 extends downward and is provided with an outer liquid flow port 73 arranged toward the central axis 61, and the inner end is provided with an inner liquid flow port 75. As shown in the figure, in a preferred embodiment, the tangential flow channel includes two tangential flow channels arranged in a circular array outside the central cavity 76, and the two tangential flow channels 74 are arranged at the outer edge of the circular central cavity, which can efficiently receive the high-concentration hydrogen-rich water mixed with hydrogen thrown from the inside and outside of the impeller high-speed rotating box in the central cavity, and then the high-concentration hydrogen-rich water flows inward along the tangential flow channel 74 and enters the top space.

[0052] like Figure 4 , Figure 5 and Figure 6As shown, the composite rotor 6 includes a central shaft 61 and an impeller 62, the impeller 62 is connected near the middle of the central shaft 61, the central shaft 61 is provided with an axial flow channel that passes vertically, the composite rotor 6 is rotatably matched with the composite stator 7, the impeller 62 is arranged in the central cavity 76, and the outer edge is arranged opposite to the outer liquid flow port 73 of the tangential flow channel 74. Under the action of high-speed rotation, the impeller 62 is similar to the centrifugal wheel of a water pump, the input end is located at the intersection of the bottom of the impeller 62 and the central shaft, and the output end is located at the outer edge of the impeller.

[0053] The circulation fusion unit is provided with a composite rotor 6 and a composite stator 7, and the closed space is divided into a top space and a bottom space. The impeller rotates with the composite rotor 6 to generate centrifugal force on the high-concentration hydrogen-rich water, pushing the high-concentration hydrogen-rich water in the bottom space into the top space through the tangential flow channel 74, and returning from the top space to the bottom space through the axial flow channel. Ultrasonic treatment is performed in the circulation by an ultrasonic mixer to achieve overall uniform mixing of the high-concentration hydrogen-rich water, which is beneficial to improving the uniformity of fusion.

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, a bottom tube 11 extending downward is provided at the bottom center of the tank body 1, the lower end of the central axis 61 extends into the bottom tube 11, a vertical ultrasonic mixer 8 is provided in the axial flow channel, the vibration generating end of the vertical ultrasonic mixer 8 is provided on the bottom sealing plate of the bottom tube 11, the vibrator extends into the axial flow channel and is higher than the lower through hole 65, so that all the high-concentration hydrogen-rich water flowing through the vertical flow channel passes through the vibrator, thereby increasing the amount of high-concentration hydrogen-rich water treated by ultrasound and improving the degree of fusion.

[0055] like Figure 7 and Figure 8 As shown, the tangential flow channels 74 include at least two and are arranged in a circular array on the outer circumference of the central cavity 76 , and each external liquid flow port 73 is arranged on the outer circumference of the central cavity 76 .

[0056] Based on the above embodiment, in the axial flow channel of the composite rotor 6, the high-concentration hydrogen-rich water is located at the front side of the input end of the impeller 62 and is in an intake state with a low pressure. The hydrogen bubbles inside are relatively large, and it is more efficient to use a longitudinal ultrasonic mixer with a low frequency and a long wavelength. The vertical ultrasonic mixer 8 performs ultrasonic treatment on the high-concentration hydrogen-rich water in a low pressure state during the circulation process; in the tangential flow channel 74 of the composite stator 7, the high-concentration hydrogen-rich water is located at the rear side of the output end of the impeller 62 and is in a discharge state with a high pressure. The volume of the hydrogen bubbles inside is relatively small, which realizes differentiated treatment of high-concentration hydrogen-rich water, improves the coverage of ultrasonic treatment, and is accompanied by different pressure environments, which is conducive to improving the deep fusion degree of hydrogen in the high-concentration hydrogen-rich water.

[0057] Embodiment three:

[0058] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig. 9 As shown, the composite rotor 6 is also provided with a top air guide cover 63, and the top air guide cover 63 is connected to the top of the central shaft 61, the top air guide cover 63 is communicated with the axial flow channel and is provided with a concave cover plate with a high bottom middle and a low periphery, and the concave cover plate array is arranged with upper through holes 64, and the central shaft is located below the impeller 62 and is provided with a lower through hole 65 communicated with the axial flow channel.

[0059] Based on the above embodiment, a top flow guide 63 connected to the axial flow channel is provided at the upper 6 ends of the composite rotor, and the concave cover plate at the bottom of the top flow guide 63 is high in the middle and low around, and is arranged relative to the outer liquid flow port of the tangential flow channel 74 up and down. Most of the hydrogen in the high-concentration hydrogen-rich water discharged from the tangential flow channel of the composite stator directly enters the top flow guide through the upper through hole of the concave cover plate due to buoyancy, enters the circulation flow again, and continues to mix with the application water, thereby avoiding the problem of a large amount of hydrogen floating to the liquid surface and being unable to participate in the circulation flow again, thereby improving the fusion efficiency.

[0060] like Figure 1 , Figure 2 As shown, a return air pipe 33 is also provided between the top of the tank body 1 and the air intake nozzle 32, the upper end of the return air pipe 33 is connected to the top of the tank body 1, and the lower end is connected to the air intake nozzle 32 at the bottom of the tank body 1, and a return air pump 34 for driving gas to flow toward the air intake nozzle 32 is provided on the return air pipe 33. A liquid level sensor 12 for detecting the liquid level is provided on the outside of the tank body 1, and the central control unit is connected to the liquid level sensor 12 and the return air pump 34 signal, and is configured to control the operation of the circulating fusion unit according to the liquid level height detected by the liquid level sensor 12.

[0061] Based on the present embodiment, a return air pipe 33 is provided between the top space and the bottom space of the tank body 1, the upper end of the return air pipe 33 is connected to the top of the tank body 1, and the lower end is connected to the air inlet nozzle 32 at the bottom of the tank body 1, and a return air pump 34 is provided on the return air pipe. The amount of gas escaping into the upper space is detected by monitoring the pressure or liquid level height of the upper space of the tank body. When the amount of hydrogen in the top space exceeds the set range, the air pump is turned on to transport the return value of hydrogen to the bottom space, so that the hydrogen passes through the circulation fusion unit again for the circulation fusion process, and the escaped hydrogen is replenished to the circulation fusion unit, which solves the problem that hydrogen escapes and cannot participate in the circulation fusion process, and effectively improves the fusion degree of hydrogen in high-concentration hydrogen-rich water.

[0062] Embodiment 4:

[0063] like Figure 2 As shown, in some preferred embodiments, the driving motor 5 is connected to the connecting seat 66 at the center position of the upper end of the composite rotor 6 through a rotating rod 51, a pressure sensor 52 is provided on the rotating rod, and the central control unit is electrically connected to the pressure sensor 52 and is configured to control the circulation fusion unit according to the detection value of the pressure sensor 52.

[0064] Based on the above embodiment, the buoyancy of the top flow guide cover 63 is affected by the hydrogen content in the high-concentration hydrogen-rich water. When the hydrogen content in the high-concentration hydrogen-rich water is high, the buoyancy of the top flow guide cover 63 is large. Conversely, when the hydrogen content in the high-concentration hydrogen-rich water is low, the buoyancy of the top flow guide cover 63 is small. By setting a pressure sensor on the rotating rod 51, the buoyancy value can be changed. Under the condition that the hydrogen and drinking water filled into the closed space are both fixed values, the fusion amount of hydrogen can be obtained, and the operation of the circulating fusion unit is controlled accordingly to improve the control process accuracy of the fusion degree.

[0065] like Figure 3 As shown, the front end of the intake pipe 31 extends into the bottom pipe 11 and is connected to an intake nozzle 32 extending into the axial flow channel. The intake pipe 31 is provided with a one-way valve for limiting the unidirectional flow of gas from the intake pipe 31 into the intake nozzle 32. An air pressure sensor 13 for monitoring the air pressure is provided on the top of the tank body 1. The central control unit is connected to the air pressure sensor 13 and the return air pump 34 signal, and is configured to control the start and stop of the return air pump 34 according to the gas pressure at the top of the closed space detected by the air pressure sensor 13.

[0066] It should be noted that the pressure sensor 52, the air pressure sensor 13 and the liquid level sensor used in the above embodiments are all automatic instruments that can convert the measured values ​​into electrical signals, and all adopt commonly used structures, and the structural principles are not repeated here.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrasonic hydrogen mixing and dissolving device, characterized in that: include: The tank body (1) is provided with a closed space for mixing and dissolving hydrogen; A liquid inlet pipe (21), connected to the top of the tank body (1) and provided with a liquid inlet switch valve, for inputting a fixed amount of drinking water into the enclosed space; An air inlet pipe (31) is connected to the bottom of the tank body (1) and is provided with an air inlet switch valve for inputting a fixed amount of hydrogen into the enclosed space; A liquid outlet pipe (4) is connected to the bottom of the tank body (1) and is provided with a liquid outlet switch valve for outputting high-concentration hydrogen-rich water obtained by mixing and dissolving hydrogen from the enclosed space to the outside; a circulation fusion unit, disposed in the closed space and comprising an ultrasonic mixer, configured to drive the drinking water and hydrogen in the closed space to circulate and mix, and perform ultrasonic treatment in the circulation flow channel; and The central control unit is control-connected with the liquid inlet switch valve, the air inlet switch valve, the liquid outlet switch valve and the circulation fusion unit.

2. The ultrasonic hydrogen mixing and dissolving device according to claim 1, characterized in that: The circulation fusion unit includes a device arranged in the middle of the tank body (1) in the height direction to divide the closed space into a bottom space and a top space. The circulation fusion unit includes a composite rotor (6) and a composite stator (7) that cooperate with each other. The composite rotor (6) rotates around a vertical central axis (61) to drive high-concentration hydrogen-rich water to circulate between the bottom space and the top space.

3. The ultrasonic hydrogen mixing and dissolving device according to claim 2, characterized in that: The composite stator (7) comprises a central cavity (76) arranged at the center of the bottom between a top plate (71) and a bottom plate (72), a tangential flow channel (74) arranged at the periphery of the top, the outer end of the tangential flow channel (74) extending downward and provided with an external liquid flow port (73) arranged toward the central axis (61), and an inner liquid flow port (75) arranged at the inner end.

4. The ultrasonic hydrogen mixing and dissolving device according to claim 3, characterized in that: The composite rotor (6) comprises a central shaft (61) and an impeller (62), wherein the impeller (62) is connected near the middle of the central shaft (61), and the central shaft (61) is provided with an axial flow channel that passes vertically through. The composite rotor (6) is rotatably matched with the composite stator (7), and the impeller (62) is arranged in a central cavity (76) and its outer edge is arranged opposite to an outer liquid flow port (73) of a tangential flow channel (74).

5. The ultrasonic hydrogen mixing and dissolving device according to claim 4, characterized in that: A bottom tube (11) extending downward is arranged at the bottom center of the tank body (1), the lower end of the central axis (61) extends into the bottom tube (11), a vertical ultrasonic mixer (8) is arranged in the axial flow channel, the vibration generating end of the vertical ultrasonic mixer (8) is arranged on the bottom sealing plate of the bottom tube (11), and the vibrator extends into the axial flow channel and is higher than the lower through hole (65).

6. The ultrasonic hydrogen mixing and dissolving device according to claim 5, characterized in that: The tangential flow channels (74) include at least two and are arranged in a circular array on the outer circumference of the central cavity (76), and each external liquid flow port (73) is arranged on the outer circumference of the central cavity (76).

7. The ultrasonic hydrogen mixing and dissolving device according to claim 4 or 5, characterized in that: A flow guide cover (63) is arranged at the top of the central shaft (61), the top flow guide cover (63) is connected to the axial flow channel and is provided with a concave cover plate with a high bottom middle and a low periphery, the concave cover plate array is arranged with upper through holes (64), and the central shaft is located below the impeller (62) and is provided with a lower through hole (65) connected to the axial flow channel.

8. The ultrasonic hydrogen mixing and dissolving device according to claim 7, characterized in that: The driving motor (5) is connected to a connecting seat (66) at the center position of the upper end of the composite rotor (6) via a rotating rod (51), a pressure sensor (52) is provided on the rotating rod, and the central control unit is connected to the pressure sensor (52) via an electrical signal and is configured to control the circulation fusion unit according to the detection value of the pressure sensor (52).

9. The ultrasonic hydrogen mixing and dissolving device according to claim 2, 5, 6 or 7, characterized in that: The front end of the air intake pipe (31) extends into the bottom pipe (11) and is connected to an air intake nozzle (32) extending into the axial flow channel. The air intake pipe (31) is provided with a one-way valve for limiting the one-way flow of gas from the air intake pipe (31) into the air intake nozzle (32). A pressure sensor (13) for monitoring air pressure is provided at the top of the tank body (1). The central control unit is connected to the air pressure sensor (13) and the return air pump (34) by signal and is configured to control the start and stop of the return air pump (34) according to the gas pressure at the top of the closed space detected by the pressure sensor (13).

10. The ultrasonic hydrogen mixing and dissolving device according to claim 9, characterized in that: A return air pipe (33) is arranged between the top space and the bottom space of the tank body (1), one end of the return air pipe (33) is connected to the top of the tank body (1), and the other end is connected to the air intake nozzle (32), and a return air pump (34) for driving the gas to flow toward the air intake nozzle (32) is arranged on the return air pipe (33), and a liquid level sensor (12) for detecting the liquid level is arranged on the outside of the tank body (1), and the central control unit is connected to the liquid level sensor (12) and the return air pump (34) by signal, and is configured to control the operation of the circulation fusion unit according to the liquid level height detected by the liquid level sensor (12).

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