Efficient ozone micro-nano bubble preparation system and process method thereof

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to an efficient ozone micro-nano bubble preparation system and a process method thereof. The device further comprises an ozone preparing unit, a gas conveying pipeline, a jet flow unit, a spiral mixing unit, a Venturi tube, a microporous membrane unit and a reaction unit. The ozone producing unit is connected with the jet flow unit through a gas conveying pipeline, the ozone producing unit comprises an ozone generator, and the gas inlet pressure is regulated and controlled through a gas valve in the gas conveying pipeline; and the jet flow unit is used for generating and conveying a mixed solution with ozone microbubbles. The jet flow unit enables the mixed liquid to form ozone microbubbles based on a Venturi effect and a hydraulic shearing effect; by arranging the jet flow unit, the spiral mixing unit, the Venturi tube and the microporous membrane unit, ozone micro-nano bubbles with high concentration and uniform size distribution can be generated under relatively low energy consumption, so that the treatment efficiency of the ozone micro-nano bubbles in the technical fields of wastewater treatment and environmental protection is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and specifically relates to an ozone micro-nano bubble high-efficiency preparation system and a process method thereof. Background Art

[0002] As a green oxidant, ozone can remove organic matter from water through direct and indirect reactions. Compared with advanced oxidation processes such as Fenton oxidation, electrochemical oxidation, and photocatalytic oxidation, ozone oxidation technology has been widely used and studied in the field of water treatment due to its advantages such as high reaction activity, good oxidation effect, no secondary pollution, simple operation, and mild reaction conditions. However, in traditional ozone dosing technology, the mass transfer efficiency and utilization rate of ozone are low, and it is difficult to oxidize stable organic pollutants. The target treatment effect can only be achieved by increasing the ozone dosage, which causes a lot of energy consumption. Therefore, it is particularly important to select a stable and efficient ozone oxidation technology to remove organic pollutants from wastewater.

[0003] Micro-nano bubbles usually refer to tiny bubbles with a diameter of less than 50 μm. In recent years, studies have found that micro-nano bubbles have a strong effect on ozone oxidation due to their long existence, high gas-liquid mass transfer efficiency, and the generation of free radicals after rupture, and have achieved good application results in water treatment. When ozone is combined with micro-nano bubble technology, the two can produce a synergistic effect, generating a large number of hydroxyl free radicals to significantly enhance the oxidizability of the reaction system, and increase the utilization rate of ozone while increasing the removal rate of organic matter.

[0004] However, the above technologies often have the following defects: Common micro-nano bubble generation methods mainly include mechanical shearing, dissolved gas release, electrolysis, membrane separation, hydrodynamic cavitation, and solvent replacement. Among them, the Venturi micro-nano bubble generator, as a representative of the hydrodynamic cavitation method, has the advantages of simple structure and low operating cost, but at present, the micro-nano bubbles generated by the Venturi generator still have problems such as low bubble concentration, uneven bubble size distribution, and high energy consumption.

[0005] To this end, the present invention provides an ozone micro-nano bubble efficient preparation system and a process method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the ozone micro-nano bubble efficient preparation system described in the present invention includes a liquid infusion pipeline; an ozone production unit, a gas transmission pipeline, a jet unit, a spiral mixing unit, a venturi tube, a microporous membrane unit and a reaction unit; The ozone production unit is connected to the jet unit through a gas pipeline, and the ozone production unit includes an ozone generator, and the air intake pressure is regulated by a gas valve in the gas pipeline; The jet unit is used to generate and transport a mixed liquid containing ozone microbubbles. The jet unit forms ozone microbubbles in the mixed liquid based on the Venturi effect and hydraulic shearing action; Preferably, the jet unit includes a liquid inlet pipe, an air injection pipe, an injection pipe and a first throat section, the liquid inlet pipe is connected to a liquid source through a liquid infusion pipeline, the air injection pipe port is connected to the air infusion pipeline, the air injection pipe is arranged at the upper end of the injection pipe, and an air cavity is formed between the air injection pipe and the injection pipe, and the first throat section increases the concentration and dispersion of ozone microbubbles in the mixed liquid through hydraulic shear and cavitation.

[0008] The spiral mixing unit is arranged at a specified distance from the rear end of the jet unit, and enhances the gas-liquid contact and mixing efficiency by causing the mixed liquid to produce a swirling effect, and breaks and refines the ozone microbubbles after the first throat section through a swirling shearing effect; Preferably, the spiral mixing unit comprises a spiral guide vane and a fixed column, wherein the spiral guide vane is axially arranged on the fixed column and abuts against a tube wall of the spiral mixing unit.

[0009] The venturi tube is arranged at a specified distance from the rear end of the spiral mixing unit, and is used to cause the mixed liquid in a swirling state at the rear end of the spiral mixing unit to produce a secondary venturi effect; Preferably, the venturi tube includes a contraction section, a second throat section and an expansion section which are coaxially arranged in sequence along the water flow direction, the tube wall of the contraction section is configured as a threaded structure to reduce the viscosity effect and intensify the gas-liquid collision, and the mixed liquid passes through the second throat section and the expansion section in sequence to generate a large number of high-concentration ozone micro-nano bubbles through hydraulic shear and cavitation.

[0010] The microporous membrane unit is arranged at a specified distance below the reaction unit; Preferably, the microporous membrane unit comprises an inorganic ceramic membrane, and the pore size screening effect of the inorganic ceramic membrane effectively improves the uniformity of the size of the ozone micro-nano bubbles generated by the venturi tube.

[0011] The reaction unit is used for catalytic oxidation of ozone micro-nano bubbles generated by the microporous membrane unit; Preferably, the reaction unit comprises a reaction column, an exhaust valve, an exhaust gas collection pipeline and a water outlet pipeline, and the exhaust gas collection pipeline is used to collect ozone generated after the reaction is completed and perform harmless treatment.

[0012] Preferably, the bottom surface of the reaction column is fixedly connected with a connecting sleeve that fits the microporous membrane unit, the side wall of the connecting sleeve is sealingly and slidably connected with a circular ring, the side wall of the circular ring is provided with a sealing mechanism that seals with the inner wall of the reaction column, a rotating groove is provided in the circular ring, the inner wall of the rotating groove is twisted with a sealing ring through a torsion spring, a group of through holes are provided on the top and bottom surfaces of the circular ring, the sealing ring is provided with connecting holes corresponding to the through holes, the side wall of the sealing ring is fixedly connected with a support plate, the inner wall of the rotating groove is fixedly connected with a fixing plate, the fixing plate and the support plate are fixedly connected. An elastic tube is fixedly connected between the rings, an annular groove is provided in the ring, an air inlet hole connected to the annular groove is provided on the top surface of the ring, a conduit is connected in the elastic tube, one end of the conduit away from the elastic tube is connected to the annular groove, a push ring is sealingly and slidably connected to the inner wall of the annular groove, a group of first springs are fixedly connected between the top surface of the push ring and the inner wall of the annular groove, a group of electromagnets magnetically attracted to the push ring are fixedly connected to the bottom surface of the annular groove, a driving mechanism for driving the ring to move is provided on the reaction column, and the water outlet pipeline is provided on the bottom surface of the reaction column.

[0013] Preferably, the driving mechanism includes an adjusting rod sealingly and slidingly connected to the bottom surface of the reaction column, a connecting pipe is fixedly connected to the top surface of the adjusting rod, the connecting pipe is communicated with the inside of the annular groove, a first control valve is arranged in the connecting pipe, a round rod is sealingly and slidingly connected to the surface of the adjusting rod, the round rod is fixedly connected to the side wall of the reaction column through a bracket, a connecting groove is vertically penetrated in the adjusting rod, the connecting groove is communicated with the connecting pipe, a second spring is fixedly connected between the bottom surface of the adjusting rod and the inner wall of the round rod, and a second control valve is arranged on the conduit.

[0014] Preferably, the sealing mechanism comprises a groove formed on the side wall of the circular ring, a hollow elastic ring is fixedly connected to the inner wall of the groove, and an air inlet hole communicating with each other is formed between the annular groove and the elastic ring.

[0015] Preferably, a slide groove is provided in the connecting sleeve, and a magnetic ring is slidably connected to the inner wall of the slide groove. The magnetic ring is magnetically attracted to the circular ring. A group of circular holes connected to the slide groove are provided on the inner wall of the connecting sleeve, and the circular holes are aligned with the top surface of the microporous membrane unit. A third spring is fixedly connected between the bottom surface of the magnetic ring and the inner wall of the slide groove.

[0016] Preferably, a group of storage grooves are opened on the bottom surface of the reaction column, the inner wall of the storage groove is rotatably connected to a fixing rod through a rotating shaft, the surface of the fixing rod is rotatably connected to a driving sleeve, the surface of the driving sleeve is fixedly connected to a group of driving blades, and an elastic rope is fixedly connected between the fixing rod and the bottom surface of the ring.

[0017] A method for efficiently preparing ozone micro-nano bubbles, the method adopts the above-mentioned system for efficiently preparing ozone micro-nano bubbles, and the method comprises the following steps: S1: Control the infusion pump to make the liquid flow into the jet unit through the liquid inlet pipe, and form a mixed liquid with the ozone in the air cavity through the injection pipe, and initially form ozone microbubbles in the first throat section based on the Venturi effect; S2: Regulate the gas valve and liquid valve to allow the mixed liquid with ozone microbubbles to pass through the spiral mixing unit, and the initial ozone microbubbles are broken and refined by the swirl shearing action of the spiral guide vanes; S3: The mixed liquid in the swirling state is made to produce a secondary Venturi effect through the Venturi tube, so that the broken ozone microbubbles are formed into high-concentration ozone micro-nano bubbles; S4: Control the operating pressure of the expansion section of the venturi tube so that the mixed liquid with high concentration of ozone micro-nano bubbles passes through the microporous membrane unit to form ozone micro-nano bubbles with uniform size distribution, and complete the catalytic oxidation and subsequent collection of ozone in the reaction unit.

[0018] The beneficial effects of the present invention are as follows: 1. The present invention can generate ozone micro-nano bubbles with high concentration and uniform size distribution at low energy consumption by providing a jet unit, a spiral mixing unit, a venturi tube and a microporous membrane unit, thereby improving the treatment efficiency of ozone micro-nano bubbles in the field of wastewater treatment and environmental protection technology.

[0019] 2. The present invention raises the ring to a certain height, and impurities will settle below the ring through the connecting holes and the through holes, thereby achieving the effect of stratifying the water, waiting for the sewage flocculation and sedimentation to be completed, and then using the electromagnet to attract the push ring, so that the push ring pushes the gas in the annular groove from the conduit into the elastic tube. At this time, the elastic ring will expand and push the support plate, so that the support plate drives the sealing ring to rotate. At this time, the connecting hole on the sealing ring will be misaligned with the through hole, and the sealing ring will seal the through hole. At this time, the water below the ring can be discharged with the help of the water outlet pipe, and the discharged water will contain flocculated impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic structural diagram of the ozone micro-nano bubble efficient preparation system of the present invention; Figure 2 It is a schematic structural diagram of the reaction unit in the present invention; Figure 3 It is a schematic diagram of the internal structure of the reaction column in the present invention; Figure 4 yes Figure 3 A magnified image of point A; Figure 5 yes Figure 3 A magnified view of point B; Figure 6It is a schematic diagram of the internal structure of the connecting sleeve in the present invention; Figure 7 yes Figure 3 Enlarged view of point C; Figure 8 It is a flow chart of the method in the present invention.

[0022] In the figure: 1, infusion pipeline; 11, liquid valve; 12, liquid flow meter; 13, infusion pump; 2, ozone unit; 3, gas pipeline; 31, gas valve; 32, gas flow meter; 4, jet unit; 41, liquid inlet pipe; 42, gas injection pipe; 43, air cavity; 44, injection pipe; 45, first throat section; 5, spiral mixing unit; 6, venturi tube; 61, contraction section; 62, second throat section; 63, expansion section; 7, microporous membrane unit; 8, reaction unit; 81, reaction column; 82, exhaust valve; 83, tail gas collection pipeline; 84, water outlet Pipeline; 101, circular ring; 102, sealing ring; 103, annular groove; 104, push ring; 105, air inlet; 106, electromagnet; 107, fixing plate; 108, support plate; 109, elastic tube; 110, conduit; 111, round rod; 112, adjusting rod; 113, connecting pipe; 114, connecting groove; 115, elastic ring; 116, connecting sleeve; 117, slide groove; 118, magnetic ring; 119, circular hole; 120, storage groove; 121, fixing rod; 122, driving sleeve; 123, driving blade; 124, elastic rope. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] Embodiment 1: Figure 1 As shown, an ozone micro-nano bubble efficient preparation system according to an embodiment of the present invention comprises a liquid infusion pipeline 1; an ozone production unit 2, a gas transmission pipeline 3, a jet unit 4, a spiral mixing unit 5, a venturi tube 6, a microporous membrane unit 7 and a reaction unit 8; The liquid inlet pipe 41 of the jet unit 4 is connected to the infusion pipeline 1 to inject the liquid into the jet unit 4. The infusion pipeline 1 is provided with a liquid valve 11, a liquid flow meter 12 and an infusion pump 13. The liquid valve 11 is used to cooperate with the infusion pump 13 to adjust the liquid inlet flow rate to achieve the required working condition of the jet unit 4; The infusion pipeline 1 is connected to the inlet of the jet unit 4 to inject the liquid into the jet unit 4; the ozone production unit 2 is connected to the upper end of the injection pipe of the jet unit 4 to inject ozone into the jet unit 4, and the gas-liquid mixture initially forms ozone microbubbles through the jet unit 4; the spiral mixing unit 5 is provided with spiral guide vanes; the venturi tube 6 causes the mixed liquid in the swirling state to have a secondary venturi effect, and a large number of ozone micro-nano bubbles appear; the microporous membrane unit 7 is provided with an inorganic ceramic membrane, and the size distribution of the ozone micro-nano bubbles flowing through the microporous membrane unit 7 is more uniform; the reaction unit 8 is used for catalytic oxidation of the ozone micro-nano bubbles and collecting and treating the ozone gas.

[0025] The liquid infusion pipeline 1 is provided with a liquid valve 11, a liquid flowmeter 12 and an infusion pump 13, the ozone unit 2 is connected to the jet unit 4 through the gas pipeline 3, the gas pipeline 3 is provided with a gas valve 31 and a gas flowmeter 32, the jet unit 4 has a liquid inlet pipe 41 and a gas injection pipe 42, the liquid inlet pipe 41 is connected to the liquid infusion pipeline 1, the gas injection pipe 42 is connected to the gas pipeline 3, the ozone forms an air cavity 43 between the injection pipe 44 and the gas injection pipe 42, and produces a Venturi effect in the first throat section 45, the ozone unit 2 can be made of existing technology, including air treatment system, cooling system, power supply system and ozone synthesis system and other modules, to ensure that stable high-purity ozone can be provided. The ozone unit 2 is connected to the gas injection pipe 42 of the jet unit 4 through the gas pipeline 3, ozone is injected into the jet unit 4, and the mixed liquid is initially formed into ozone microbubbles through the jet unit 4. The gas pipeline 3 is provided with a gas valve 31 and a gas flow meter 32. The gas valve 31 on the gas pipeline 3 is used to adjust the gas flow rate and gas concentration of ozone, and synchronously adjust the liquid valve 11 to control the liquid inlet flow rate to reasonably improve the ozone microbubble generation efficiency of the jet unit 4.

[0026] The jet unit 4 includes a liquid inlet pipe 41, an air injection pipe 42, an air cavity 43, a jet pipe 44 and a first throat section 45. After the liquid enters the jet unit 4 through the liquid inlet pipe 41, the flow velocity increases and the pressure decreases sharply at the jet pipe 44. An air cavity 43 is formed at the upper end of the jet pipe 44 and a large amount of high-concentration ozone is sucked in through the air injection pipe 42. The high-speed fluid collides violently with the ozone to generate hydraulic cavitation and shearing through the first throat section 45, and initially forms ozone microbubbles with larger particle sizes.

[0027] The spiral mixing unit 5 includes a fixed column and a spiral guide vane, which is axially arranged on the fixed column and abuts against the tube wall of the spiral mixing unit 5. The inner tube wall of the contraction section 61 of the Venturi tube 6 is a threaded structure, and the second throat section 62 produces a secondary Venturi effect. The inner tube wall of the expansion section 63 is an arc-shaped curved surface structure and has a smooth transition with the second throat section 62. The front end of the spiral mixing unit 5 is connected to the rear end of the first throat section 45 of the jet unit 4 at a specified distance. The spiral guide vane is arranged in the spiral mixing unit 5. The mixed liquid enhances the turbulence intensity of the flow field through the spiral mixing unit 5. The mixed liquid in the swirling state causes the ozone microbubbles to break through the hydraulic shearing action, thereby further reducing the bubble size.

[0028] The front end of the venturi tube 6 is connected to the rear end of the spiral mixing unit 5 at a specified distance. The venturi tube 6 is provided with a contraction section 61, a second throat section 62 and an expansion section 63 in sequence along the axial direction. The inner wall of the contraction section 61 is provided with a threaded structure to reduce the viscosity effect in the mixed liquid and enhance the gas-liquid collision effect. The mixed liquid in a high-speed swirling state will undergo a secondary venturi effect when passing through the second throat section 62. After the mixed liquid undergoes a sudden decrease in local pressure and increases again when entering the expansion section 63, a large number of ozone micro-nano bubbles are generated under the action of hydraulic cavitation and shear.

[0029] The microporous membrane unit 7 is connected to the lower end of the reaction unit 8. The reaction column 81 of the reaction unit 8 is an arc-shaped cylindrical structure. The water outlet pipe 84 is arranged on the side wall of the reaction column 81. The exhaust valve 82 and the tail gas collection pipe 83 are arranged at the top of the reaction column 81. The front end of the microporous membrane unit 7 is connected to the rear end of the expansion section 63 of the venturi tube 6 at a specified distance. An inorganic ceramic membrane with a pore size of 50-80nm is arranged in the microporous membrane unit. The ozone micro-nano bubble mixture is screened by the pore size of the inorganic ceramic membrane to generate high-concentration ozone micro-nano bubbles with uniform size distribution.

[0030] The reaction unit 8 is connected to the microporous membrane unit 7, and the reaction unit 8 includes a reaction column 81, an exhaust valve 82, an exhaust gas collection pipeline 83 and a water outlet pipeline 84. Ozone micro-nano bubbles with uniform bubble size and high concentration are discharged through the water outlet pipeline 84 after completing the reaction in the reaction column 81, and the remaining ozone gas is collected through the exhaust valve 82 and the exhaust gas collection pipeline 83 and is harmlessly treated.

[0031] The present invention uses the ozone unit 2, the jet unit 4, the venturi tube 6 and the microporous membrane unit 7 as the main generating parts of the ozone micro-nano bubbles, and generates a large number of ozone micro-nano bubbles from the mixed liquid. The present invention makes the generated ozone micro-nano bubbles have the characteristics of high concentration and strong uniformity of bubble size through the synergistic effect of the ozone unit 2, the jet unit 4, the spiral mixing unit 5, the venturi tube 6 and the microporous membrane unit 7. In the initial stage, the liquid in the liquid inlet pipe 41 forms a high-speed fluid through the injection pipe 44, so that the jet unit 4 is in a negative pressure state to suck the ozone in the gas injection pipe 42 and form an air cavity 43. The high-speed fluid collides strongly with the ozone in the first throat section 45 to produce hydraulic cavitation and shearing to form initial ozone micro-bubbles. Then, the mixed liquid passes through the spiral mixing unit 5, and a swirl is generated under the action of the spiral guide vane to enhance the mixing efficiency, so that the ozone micro-bubbles are broken and the bubble size is further reduced. Subsequently, the mixed liquid passes through the venturi tube 6 and further undergoes gas-liquid collision under the action of the threaded contraction section 61, enters the second throat section 62 of the venturi tube 6 in the form of high-speed swirl and produces a secondary venturi effect, so that the expansion section 63 of the venturi tube 6 produces high-concentration ozone micro-nano bubbles. Finally, the mixed liquid passes through the microporous membrane unit 7 and under the action of the inorganic ceramic membrane, further improves the uniformity of the size of the ozone micro-nano bubbles. The generated ozone micro-nano bubbles with high concentration and strong uniformity can be used in the fields of wastewater treatment and environmental protection technology. At the same time, the overall installation of the ozone micro-nano bubble preparation system is simple and easy to operate, which can effectively reduce the operating energy consumption.

[0032] Embodiment 2: Figures 2 to 7As shown, in contrast to Example 1, another embodiment of the present invention is as follows: the bottom surface of the reaction column 81 is fixedly connected with a connecting sleeve 116 that fits the microporous membrane unit 7, the side wall of the connecting sleeve 116 is sealingly and slidably connected with a ring 101, the side wall of the ring 101 is provided with a sealing mechanism that seals with the inner wall of the reaction column 81, a rotating groove is provided in the ring 101, the inner wall of the rotating groove is twisted with a sealing ring 102 through a torsion spring, a group of through holes are provided on the top and bottom surfaces of the ring 101, the sealing ring 102 is provided with connecting holes corresponding to the through holes, the side wall of the sealing ring 102 is fixedly connected with a support plate 108, the inner wall of the rotating groove is fixedly connected with a fixing plate 107, the fixing plate 107 and the support plate 108 are fixedly connected. 8, an elastic tube 109 is fixedly connected between the ring 101, an annular groove 103 is provided in the ring 101, an air inlet 105 connected to the annular groove 103 is provided on the top surface of the ring 101, a conduit 110 is connected in the elastic tube 109, one end of the conduit 110 away from the elastic tube 109 is connected to the annular groove 103, a push ring 104 is sealingly and slidably connected to the inner wall of the annular groove 103, a group of first springs are fixedly connected between the top surface of the push ring 104 and the inner wall of the annular groove 103, a group of electromagnets 106 magnetically attracted to the push ring 104 are fixedly connected to the bottom surface of the annular groove 103, a driving mechanism for driving the ring 101 to move is provided on the reaction column 81, and the water outlet pipeline 84 is provided on the bottom surface of the reaction column 81; After the sewage in the present application undergoes ozone reaction in the reaction column 81, there will be a certain flocculation phenomenon. At this time, when the sewage is discharged, it will carry these flocculated impurities, thereby affecting the effect of sewage treatment. Through the above-mentioned mechanism, after the sewage reacts with ozone, the ring 101 can be driven to rise with the help of the driving mechanism. At this time, the through hole on the ring 101 is aligned with the connecting hole on the sealing ring 102. After the ring 101 rises to a certain height, the impurities will be precipitated to the bottom of the ring 101 through the connecting hole and the through hole, waiting for the sewage flocculation and precipitation to be completed, and then the push ring 104 is sucked by the electromagnet 106, so that the push ring 104 pushes the gas in the annular groove 103 from the conduit 110 into the elastic tube 109. At this time, the elastic ring 1 15 will expand and push the support plate 108, so that the support plate 108 drives the sealing ring 102 to rotate. At this time, the connecting hole on the sealing ring 102 will be misaligned with the through hole, and the sealing ring 102 will seal the through hole. At this time, the water under the ring 101 can be discharged with the help of the water outlet pipe 84. The discharged water will contain flocculated impurities. After the discharge is completed, the electromagnet 106 is turned off. At this time, the push ring 104 will be reset under the pull of the first spring, and the elastic tube 109 will also be restored due to its own elasticity, so that the support plate 108 drives the sealing plate to reset. At this time, the through hole will be aligned with the connecting hole. At this time, the water will flow to the bottom of the ring 101, and then continue to be discharged using the water outlet pipe 84.

[0033] The driving mechanism comprises an adjusting rod 112 which is sealingly and slidably connected to the bottom surface of the reaction column 81, a connecting pipe 113 is fixedly connected to the top surface of the adjusting rod 112, the connecting pipe 113 is communicated with the inside of the annular groove 103, a first control valve is arranged in the connecting pipe 113, a round rod 111 is sealingly and slidably connected to the surface of the adjusting rod 112, the round rod 111 is fixedly connected to the side wall of the reaction column 81 through a bracket, a connecting groove 114 is vertically penetrated in the adjusting rod 112, the connecting groove 114 is communicated with the connecting pipe 113, a second spring is fixedly connected between the bottom surface of the adjusting rod 112 and the inner wall of the round rod 111, and a second control valve is arranged on the conduit 110; When the circular ring 101 needs to rise, the present application closes the second control valve and opens the first control valve, so that the gas in the annular groove 103 can only enter the connecting groove 114 through the connecting pipe 113, and then the push ring 104 is sucked by the electromagnet 106, so that the push ring 104 pushes the gas in the annular groove 103 to enter the connecting groove 114, and then enters the round rod 111 to push the adjusting rod 112 to rise. After the circular ring 101 moves to the appropriate position driven by the adjusting rod 112, the first control valve is closed, so that the gas in the round rod 111 can no longer circulate, so that the adjusting rod 112 can no longer move. When the sealing ring 102 needs to be rotated, the present application opens the second control valve and closes the first control valve. At this time, the push ring 104, under the suction of the electromagnet 106, will allow the gas in the annular groove 103 to enter the elastic tube 109, so that the support plate 108 drives the sealing ring 102 to rotate.

[0034] The sealing mechanism includes a groove formed on the side wall of the circular ring 101, and a hollow elastic ring 115 is fixedly connected to the inner wall of the groove, and an air inlet 105 which is interconnected is formed between the circular groove 103 and the elastic ring 115; when the electromagnet 106 in the present application is started, the first control valve and the second control valve can be closed first, and then when the electromagnet 106 sucks the push ring 104, the push ring 104 will push the gas in the circular groove 103 into the elastic ring 115 from the air inlet 105, and at this time, the elastic ring 115 is sealed against the inner wall of the reaction column 81, and then when the adjustment rod 112 needs to be moved, the first control valve can be opened, and when the sealing ring 102 needs to be rotated, the second control valve can be opened, and at this time, when the water is discharged, the water above the circular ring 101 can be prevented from flowing away from the gap between the circular ring 101 and the inner wall of the reaction column 81.

[0035] A slide groove 117 is provided in the connecting sleeve 116, and a magnetic ring 118 is slidably connected to the inner wall of the slide groove 117. The magnetic ring 118 is magnetically attracted to the circular ring 101. A group of circular holes 119 connected to the slide groove 117 are provided on the inner wall of the connecting sleeve 116. The circular holes 119 are aligned with the top surface of the microporous membrane unit 7, and a third spring is fixedly connected between the bottom surface of the magnetic ring 118 and the inner wall of the slide groove 117. When the impurities are flocculated in the present application, it is inevitable that impurities will be deposited on the micropores of the microporous membrane unit 7. At this time, the circular ring 101 can be driven by the driving mechanism. At this time, the circular ring 101 will drive the magnetic ring 118 to move upward, thereby pushing the water in the slide groove 117. The water in the reaction column 81 can enter the slide groove 117 from the circular holes 119, so that the water can be sprayed from the circular holes 119 onto the top surface of the microporous membrane unit 7, thereby achieving the effect of clearing the micropores on the microporous membrane unit 7.

[0036] A group of receiving grooves 120 are provided on the bottom surface of the reaction column 81, and the inner wall of the receiving groove 120 is rotatably connected to a fixed rod 121 through a rotating shaft, and the surface of the fixed rod 121 is rotatably connected to a driving sleeve 122, and the surface of the driving sleeve 122 is fixedly connected to a group of driving blades 123, and an elastic rope 124 is fixedly connected between the fixed rod 121 and the bottom surface of the ring 101; when the ring 101 in the present application rises, it will pull the elastic rope 124, so that the elastic rope 124 pulls the fixed rod 121 to rotate, and then when the water outlet pipe 84 is drained, the water flow will flow, and at this time the water flow will drive the driving blades 123 to rotate, so that the driving blades 123 stir the precipitated impurities, so that the water flow can better carry the impurities out.

[0037] like Figure 8 As shown, a highly efficient process for preparing ozone micro-nano bubbles is provided. The process adopts the highly efficient system for preparing ozone micro-nano bubbles. The method comprises the following steps: S1: Control the infusion pump 13 to make the liquid flow into the jet unit 4 through the liquid inlet pipe 41, and form a mixed liquid with the ozone in the air cavity 43 through the injection pipe 44, and initially form ozone microbubbles in the first throat section 45 based on the Venturi effect; S2: adjusting the gas valve 31 and the liquid valve 11 to allow the mixed liquid containing ozone microbubbles to pass through the spiral mixing unit 5, and the initial ozone microbubbles are broken and refined by the swirl shearing action of the spiral guide vanes; S3: The mixed liquid in the swirling state is made to produce a secondary Venturi effect through the Venturi tube 6, so that the broken ozone microbubbles are formed into high-concentration ozone micro-nano bubbles; S4: Controlling the operating pressure of the expansion section 63 of the venturi tube 6, so that the mixed liquid with high concentration of ozone micro-nano bubbles passes through the microporous membrane unit 7 to form ozone micro-nano bubbles with uniform size distribution, and completing the catalytic oxidation and subsequent collection of ozone in the reaction unit 8.

[0038] Working principle: The present invention uses the ozone unit 2, the jet unit 4, the venturi tube 6 and the microporous membrane unit 7 as the main generating parts of the ozone micro-nano bubbles, and generates a large number of ozone micro-nano bubbles from the mixed liquid. The present invention uses the synergistic effect of the ozone unit 2, the jet unit 4, the spiral mixing unit 5, the venturi tube 6 and the microporous membrane unit 7 to make the generated ozone micro-nano bubbles have the characteristics of high concentration and strong uniformity of bubble size. In the initial stage, the liquid in the liquid inlet pipe 41 forms a high-speed fluid through the injection pipe 44, so that the jet unit 4 is in a negative pressure state to inhale the ozone in the gas injection pipe 42 and form an air cavity 43. The high-speed fluid collides strongly with the ozone in the first throat section 45 to produce hydraulic cavitation and shearing to form initial ozone micro-bubbles. Then, the mixed liquid passes through the spiral mixing unit 5, and a swirl is generated under the action of the spiral guide vane to enhance the mixing efficiency, so that the ozone micro-bubbles are broken and the bubble size is further reduced. Subsequently, the mixed liquid passes through the venturi tube 6 and further undergoes gas-liquid collision under the action of the threaded contraction section 61, enters the second throat section 62 of the venturi tube 6 in the form of high-speed swirl and produces a secondary venturi effect, so that the expansion section 63 of the venturi tube 6 produces high-concentration ozone micro-nano bubbles. Finally, the mixed liquid passes through the microporous membrane unit 7 and under the action of the inorganic ceramic membrane, further improves the uniformity of the size of the ozone micro-nano bubbles. The generated ozone micro-nano bubbles with high concentration and strong uniformity can be used in the fields of wastewater treatment and environmental protection technology. At the same time, the overall installation of the ozone micro-nano bubble preparation system is simple and easy to operate, which can effectively reduce the operating energy consumption.

[0039] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ozone micro-nano bubble efficient preparation system, comprising an infusion pipeline (1); characterized in that: It also includes an ozone production unit (2), a gas transmission pipeline (3), a jet unit (4), a spiral mixing unit (5), a venturi tube (6), a microporous membrane unit (7) and a reaction unit (8); The infusion pipeline (1) is connected to the inlet of the jet unit (4) to inject the liquid into the jet unit (4); the ozone generating unit (2) is connected to the upper end of the injection pipe of the jet unit (4) to inject ozone into the jet unit (4); and the gas-liquid mixture passes through the jet unit (4) to initially form ozone microbubbles; The spiral mixing unit (5) is provided with a spiral guide vane; The venturi tube (6) causes the mixed liquid in the swirling state to produce a secondary venturi effect, resulting in the generation of a large number of ozone micro-nano bubbles; The microporous membrane unit (7) is provided with an inorganic ceramic membrane, and the size distribution of the ozone micro-nano bubbles flowing through the microporous membrane unit (7) is more uniform; The reaction unit (8) is used to catalyze and oxidize ozone micro-nano bubbles, and collect and process the ozone gas.

2. The ozone micro-nano bubble efficient preparation system according to claim 1, characterized in that: The liquid infusion pipeline (1) is provided with a liquid valve (11), a liquid flow meter (12) and an infusion pump (13); the ozone generating unit (2) is connected to the jet unit (4) via a gas transmission pipeline (3); the gas transmission pipeline (3) is provided with a gas valve (31) and a gas flow meter (32); the jet unit (4) has a liquid inlet pipe (41) and a gas injection pipe (42); the liquid inlet pipe (41) is connected to the liquid infusion pipeline (1); the gas injection pipe (42) is connected to the gas transmission pipeline (3); ozone forms an air cavity (43) between the injection pipe (44) and the gas injection pipe (42), and generates a Venturi effect in the first throat section (45).

3. The ozone micro-nano bubble efficient preparation system according to claim 2, characterized in that: The spiral mixing unit (5) comprises a fixed column and a spiral guide vane, wherein the spiral guide vane is axially arranged on the fixed column and abuts against the tube wall of the spiral mixing unit (5), the inner tube wall of the contraction section (61) of the Venturi tube (6) is a threaded structure, the second throat section (62) produces a secondary Venturi effect, and the inner tube wall of the expansion section (63) is an arc-shaped curved surface structure and has a smooth transition with the second throat section (62).

4. The ozone micro-nano bubble efficient preparation system according to claim 3, characterized in that: An inorganic ceramic membrane with a pore size of 50-80 nm is arranged in the microporous membrane unit (7), and the microporous membrane unit (7) is connected to the lower end of the reaction unit (8). The reaction column (81) of the reaction unit (8) is an arc-shaped cylindrical structure, the water outlet pipeline (84) is arranged on the side wall of the reaction column (81), and the exhaust valve (82) and the tail gas collection pipeline (83) are arranged at the top of the reaction column (81).

5. The ozone micro-nano bubble efficient preparation system according to claim 4, characterized in that: The bottom surface of the reaction column (81) is fixedly connected to a connecting sleeve (116) that fits the microporous membrane unit (7); the side wall of the connecting sleeve (116) is sealingly and slidably connected to a circular ring (101); the side wall of the circular ring (101) is provided with a sealing mechanism that seals with the inner wall of the reaction column (81); a rotating groove is provided in the circular ring (101); the inner wall of the rotating groove is twisted with a sealing ring (102) via a torsion spring; a group of through holes are provided on the top and bottom surfaces of the circular ring (101); the sealing ring (102) is provided with connecting holes corresponding to the through holes; the side wall of the sealing ring (102) is fixedly connected to a supporting plate (108); the inner wall of the rotating groove is fixedly connected to a fixing plate (107); an elastic tube (109) is fixedly connected between the fixing plate (107) and the supporting plate (108); An annular groove (103) is provided in the circular ring (101); an air inlet (105) in communication with the annular groove (103) is provided on the top surface of the circular ring (101); a conduit (110) is in communication with the elastic tube (109); an end of the conduit (110) away from the elastic tube (109) is in communication with the annular groove (103); a push ring (104) is sealingly and slidably connected to the inner wall of the annular groove (103); a group of first springs are fixedly connected between the top surface of the push ring (104) and the inner wall of the annular groove (103); a group of electromagnets (106) magnetically attracted to the push ring (104) are fixedly connected to the bottom surface of the annular groove (103); a driving mechanism for driving the circular ring (101) to move is provided on the reaction column (81); and the water outlet pipeline (84) is provided on the bottom surface of the reaction column (81).

6. The ozone micro-nano bubble efficient preparation system according to claim 5, characterized in that: The driving mechanism comprises an adjusting rod (112) sealingly and slidably connected to the bottom surface of the reaction column (81); a connecting pipe (113) is fixedly connected to the top surface of the adjusting rod (112); the connecting pipe (113) is communicated with the inside of the annular groove (103); a first control valve is arranged in the connecting pipe (113); a round rod (111) is sealingly and slidably connected to the surface of the adjusting rod (112); the round rod (111) is fixedly connected to the side wall of the reaction column (81) through a bracket; a connecting groove (114) is vertically penetrated in the adjusting rod (112); the connecting groove (114) is communicated with the connecting pipe (113); a second spring is fixedly connected between the bottom surface of the adjusting rod (112) and the inner wall of the round rod (111); and a second control valve is arranged on the conduit (110).

7. The ozone micro-nano bubble efficient preparation system according to claim 6, characterized in that: The sealing mechanism comprises a groove formed on the side wall of the circular ring (101), a hollow elastic ring (115) being fixedly connected to the inner wall of the groove, and an air inlet (105) communicating with each other is formed between the annular groove (103) and the elastic ring (115).

8. The ozone micro-nano bubble efficient preparation system according to claim 7, characterized in that: A slide groove (117) is provided in the connecting sleeve (116), and a magnetic ring (118) is slidably connected to the inner wall of the slide groove (117). The magnetic ring (118) is magnetically attracted to the circular ring (101). A group of circular holes (119) connected to the slide groove (117) are provided on the inner wall of the connecting sleeve (116), and the circular holes (119) are aligned with the top surface of the microporous membrane unit (7). A third spring is fixedly connected between the bottom surface of the magnetic ring (118) and the inner wall of the slide groove (117).

9. The ozone micro-nano bubble efficient preparation system according to claim 8, characterized in that: A group of receiving grooves (120) are provided on the bottom surface of the reaction column (81); the inner wall of the receiving groove (120) is rotatably connected to a fixing rod (121) via a rotating shaft; the surface of the fixing rod (121) is rotatably connected to a driving sleeve (122); the surface of the driving sleeve (122) is fixedly connected to a group of driving leaves (123); and an elastic rope (124) is fixedly connected between the fixing rod (121) and the bottom surface of the circular ring (101).

10. A method for efficiently preparing ozone micro-nano bubbles, the method using the system for efficiently preparing ozone micro-nano bubbles as claimed in claim 9, characterized in that: The method comprises the following steps: S1: controlling the infusion pump (13) to allow the liquid to flow into the jet unit (4) through the liquid inlet pipe (41), and to form a mixed liquid together with the ozone in the air cavity (43) through the action of the jet pipe (44), and to initially form ozone microbubbles in the first throat section (45) based on the Venturi effect; S2: adjusting the gas valve (31) and the liquid valve (11) so that the mixed liquid containing ozone microbubbles passes through the spiral mixing unit (5), and the initial ozone microbubbles are broken and refined by the swirl shearing action of the spiral guide vanes; S3: The mixed liquid in the swirling state is made to produce a secondary Venturi effect through the Venturi tube (6), so that the broken ozone microbubbles are formed into high-concentration ozone micro-nanobubbles; S4: Controlling the operating pressure of the expansion section (63) of the venturi tube (6) so that the mixed liquid with high concentration of ozone micro-nano bubbles passes through the microporous membrane unit (7) to form ozone micro-nano bubbles with uniform size distribution, and completing the catalytic oxidation and subsequent collection of ozone in the reaction unit (8).

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