A gas-liquid composite fluidized bubble bed and method of use thereof

Abstract

The application discloses a gas-liquid composite flow state bubble bed and a use method thereof, relates to the technical field of bubble beds, and aims at the problems of low defoaming efficiency, low gas utilization rate and uneven gas-liquid distribution of the existing bubble bed.The bubble bed comprises a bubble bed body, a supporting box, a plurality of conveying pipes and a defoaming component.The defoaming component comprises a mounting pipe, a conical pipe, a dispersion assembly, a fixing frame, a conical rubber pipe and an elastic bending part.The dispersion assembly comprises driving blades, a rotating shaft and helical blades.The bubble bed further comprises a circulating air injection component, an adjusting component and a conveying component.The adjusting component comprises an adjusting shaft, an arc-shaped flow limiting plate and a brake ring.The conveying component comprises a circulating pump, a flow dividing box and a flow pipe, and is provided with an air pressure sensor and a display screen.The application is used for gas-liquid mixing reactions in the fields of chemical production and wastewater treatment, and realizes multistage elimination of bubbles and recycling of gas.

Description

Technical Field

[0001] This invention relates to the field of bubble bed technology, and in particular to a gas-liquid composite fluidized bubble bed and its application method. Background Technology

[0002] Gas-liquid composite fluidized bed (BFB) is an important gas-liquid contact device widely used in chemical production, wastewater treatment, gas-liquid reaction and bio-fermentation. Its working principle is to inject gas into the bed containing liquid through a distributor, so that the gas is uniformly dispersed in the liquid in the form of bubbles, forming a two-phase fluidized state of gas and liquid, thereby realizing efficient mass and heat transfer between gas and liquid. Compared with traditional stirred reactors and fixed bed reactors, BFB has advantages such as simple structure, low pressure drop, large gas-liquid contact area and good mixing effect, and has important application value in industrial production. However, in traditional bubble beds, a large number of bubbles are formed after the gas enters the liquid during the gas injection process. If these bubbles cannot be eliminated in time and effectively, it will lead to uneven distribution of the gas and liquid phases, reduce the gas-liquid contact efficiency, and thus affect the reaction or treatment effect. Although some bubble beds in the existing technology have simple defoaming structures, they are mostly passive defoaming with low defoaming efficiency, which is difficult to meet the defoaming requirements under high gas injection conditions. Furthermore, the gas utilization rate is low. During the operation of the bubble bed, a large amount of gas will float on the surface of the liquid and cannot fully contact the liquid, resulting in gas waste. The existing technology lacks a mechanism for recycling and reusing floating gas, which leads to low gas utilization and increased operating costs. To address the aforementioned problems, this technical solution proposes a gas-liquid composite fluidized bed and its application method. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of low defoaming efficiency, low gas utilization rate and uneven gas-liquid distribution in existing bubble beds, and to propose a gas-liquid composite fluidized bubble bed and its application method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A gas-liquid composite fluidized bed includes a bubble bed body and further includes: A support box is fixedly installed on one side of the bubble bed body; Multiple delivery pipes are fixedly installed at the bottom of the support box and extend into the body of the bubble bed; Defoaming components are installed on each of the conveying pipes to eliminate air bubbles within the bubble bed body; A circulating gas injection component is installed on the top inner wall of the bubble bed body and connected to the support box, for circulating the gas in the bubble bed body into the support box; The gas is distributed to the multiple delivery pipes via the support box, and after being processed by the defoaming component, it enters the bubble bed body. The circulating gas injection component draws the gas above the bubble bed body back to the support box for recirculation.

[0005] In one possible design, the defoaming component includes an installation pipe fixedly mounted on the inner wall of the top of the delivery pipe, the top end of the installation pipe extending into the bubble bed body and fixedly mounted with a conical tube, a dispersion component installed inside the conical tube, and the dispersion component being driven to operate to eliminate bubbles in the solution when the gas and solution are discharged upward through the installation pipe and the conical tube.

[0006] In one possible design, the dispersion assembly includes a mounting bracket fixedly installed inside the conical tube, a rotating shaft rotatably connected to the mounting bracket, a helical blade fixedly sleeved on the rotating shaft and located inside the mounting tube, and a drive blade fixedly sleeved on the rotating shaft and located inside the conical tube. The solution and gas exert an impact force on the drive blade, causing the drive blade to rotate, and the rotating shaft drives the helical blade to rotate, thereby eliminating air bubbles in the solution.

[0007] In one possible design, the device also includes a fixing bracket fixedly installed on the top of the conical tube and a conical rubber tube fixedly installed inside the fixing bracket. The inner side of the conical rubber tube is provided with multiple elastic bends at equal intervals. The pressure generated when the solution is discharged upward causes the conical rubber tube to expand intermittently in order to squeeze the air bubbles in the solution.

[0008] In one possible design, the circulating gas injection component includes a transfer box and an air pump fixedly installed on the inner wall of the top of the bubble bed body, as well as multiple connecting pipes; the outlet end of the air pump extends into the transfer box, one end of the multiple connecting pipes is fixedly installed at equal intervals on the inner wall of the top of the transfer box, and the other end extends into the support box; the air pump draws the gas floating above the solution to the transfer box, and then re-injects it into the support box through the multiple connecting pipes.

[0009] In one possible design, the adjusting component includes an adjusting shaft rotatably connected to the inner wall of one side of the support box, two mounting plates fixedly sleeved on the adjusting shaft, an arc-shaped flow limiting plate fixedly mounted on the two mounting plates, and a handwheel fixedly mounted on one end of the adjusting shaft. The arc-shaped flow limiting plate is tightly fitted to the inner wall of the support box. By rotating the handwheel, the arc-shaped flow limiting plate is moved to block the multiple delivery pipes, thereby controlling the flow rate of gas entering the delivery pipes.

[0010] In one possible design, the adjusting component further includes a brake ring fixedly installed on one side of the support box, the adjusting shaft passing through the brake ring and tightly fitting against the inner wall of the brake ring; the brake ring is used to limit the adjusting shaft after adjustment.

[0011] In one possible design, the conveying component includes a circulation pump fixedly installed on one side of the bottom of the bubble bed body, an outlet pipe fixedly installed at the inlet end of the circulation pump, a distribution box fixedly installed at the outlet end of the circulation pump, and multiple flow pipes; the top end of the outlet pipe extends into the bubble bed body, one end of the multiple flow pipes is fixedly installed at equal intervals on one side inner wall of the distribution box, and the other end extends into the corresponding conveying pipe; the circulation pump extracts the solution and gas from the bubble bed body and disperses them into the multiple conveying pipes through the distribution box and the multiple flow pipes to promote the fusion of solution and gas.

[0012] In one possible design, a grid plate is fixedly installed inside the bubble bed body. The grid plate is located above a plurality of fixed frames. A plurality of conical spikes are fixedly installed at equal intervals at the bottom of the grid plate. When the solution discharged through the conical rubber tube flows upward, the grid plate and the conical spikes will squeeze or puncture the remaining bubbles in the solution.

[0013] A method of using the above-described gas-liquid composite fluidized bed includes the following steps: S1. Inject the solution to be treated into the bubble bed body through the feeding hole; S2. Gas is injected into the bubble bed body through the gas injection connector and support box via multiple delivery pipes. At the same time, the defoaming component on the delivery pipe eliminates the bubbles in the liquid. S3. Control the flow rate of gas entering each delivery pipe by adjusting the components; S4. After closing the solenoid valve, start the conveying component to extract the solution and gas in the bubble bed body and disperse them back into multiple conveying pipes; S5. Start the gas circulation injection component to re-inject the gas floating above the solution into the support box, thereby realizing the recycling of the gas. S6. The solution discharged through the defoaming component further reduces the bubble content under the action of the grid plate and the cone-shaped puncture part; S7. Real-time monitoring of the air pressure inside the bubble bed body via air pressure sensors and a display screen ensures stable operation. Beneficial effects:

[0014] 1. By setting up multi-stage defoaming components on the delivery pipe, the bubbles in the solution are eliminated step by step. First, when the solution and gas are discharged upward through the installation pipe and the conical tube, the gas impacts the drive blades, causing them to rotate. The drive blades then rotate synchronously via the rotating shaft, actively stirring the solution and effectively eliminating bubbles. Second, when the solution is discharged upward through the conical rubber tube, the solution pressure causes the conical rubber tube to expand intermittently. The repeatedly expanding conical rubber tube exerts a squeezing effect on the solution, further treating the bubbles. Finally, after the above two stages of treatment, the solution flows upward and passes through the grid plate and the conical spikes, which further crush or puncture any remaining bubbles in the solution. Through the synergistic cooperation of the three-stage defoaming mechanism, the bubble content in the solution can be reduced, effectively solving the problem of unsatisfactory defoaming effect in existing bubble beds and improving the uniformity of gas-liquid contact and reaction efficiency. 2. By setting up a circulating gas injection component, after injecting an equal amount of gas into the bubble bed body, the solenoid valve is closed, and the gas pump is started to pump the unused gas floating above the solution to the transfer box. Then, the gas is reinjected into the support box through multiple connecting pipes, so that the gas is injected into the bubble bed body again through multiple delivery pipes to mix with the solution. This design realizes the recovery and recycling of floating gas, avoids gas waste, effectively improves gas utilization, reduces equipment operating costs, and also allows the gas and solution to mix more thoroughly, improving fluidization quality. 3. By setting a conveying component at the bottom of the bubble bed body, the solution and gas in the bubble bed body can be extracted by starting the circulation pump, enter the distribution box through the liquid outlet pipe, and then be dispersed and conveyed to the corresponding multiple conveying pipes through multiple flow pipes. The gas and solution are forcibly fused in the conveying pipes and then reinjected into the bubble bed body. Through active forced circulation conveying, the gas-liquid mixing effect is enhanced. It is especially suitable for high viscosity liquids or working conditions that require high intensity gas-liquid mixing, and greatly improves the overall fluidization quality of the bubble bed. This invention effectively solves the problem of low defoaming efficiency in traditional bubble beds by using multi-stage defoaming components in synergy. It improves gas utilization and reduces operating costs by using a circulating gas injection component to recover and re-inject floating gas. At the same time, it ensures uniform gas-liquid distribution by flexibly controlling the gas flow rate through adjusting components, thus achieving efficient and stable gas-liquid mixing treatment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the first-view structure of a gas-liquid composite fluidized bubble bed proposed in this invention. Figure 2 This is a two-dimensional schematic diagram of the structure of a gas-liquid composite fluidized bubble bed proposed in this invention from a second perspective. Figure 3This is a three-dimensional cross-sectional schematic diagram of the gas-liquid composite fluidized bubble bed proposed in this invention. Figure 4 This is a three-dimensional schematic diagram of the support box and multiple conveying pipe connection structure of a gas-liquid composite fluidized bubble bed proposed in this invention; Figure 5 This is a three-dimensional schematic diagram of the separation structure of the conical tube and the fixed frame of a gas-liquid composite fluidized bubble bed proposed in this invention. Figure 6 This is a three-dimensional schematic diagram of the mounting frame, rotating shaft, drive blades and spiral blade connection structure of a gas-liquid composite fluidized bed proposed in this invention; Figure 7 This is a schematic diagram of the main view cross-sectional structure of a gas-liquid composite fluidized bed proposed in this invention; Figure 8 This is a three-dimensional schematic diagram of the connection structure of the adjusting shaft, two mounting plates and arc-shaped flow limiting plate of a gas-liquid composite fluidized bubble bed proposed in this invention.

[0016] In the diagram: 1. Bubble bed body; 2. Cover plate; 3. Pressure sensor; 4. Display screen; 5. Grid plate; 6. Support box; 7. Injection connector; 8. Delivery pipe; 9. Installation pipe; 10. Conical pipe; 11. Mounting frame; 12. Rotating shaft; 13. Drive blade; 14. Spiral blade; 15. Fixing frame; 16. Conical rubber tube; 17. Elastic bending part; 18. Transfer box; 19. Air pump; 20. Connecting pipe; 21. Solenoid valve; 22. Adjusting shaft; 23. Mounting plate; 24. Arc-shaped flow limiting plate; 25. Fixing plate; 26. Brake ring; 27. Handwheel; 28. Conical spike part; 29. ​​Circulation pump; 30. Discharge pipe; 31. Diverter box; 32. Flow pipe. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In one embodiment: Refer to Figure 1-8A bubble bed includes a bubble bed body 1, a support box 6, and defoaming components, circulating gas injection components, and conveying components disposed within the bubble bed body 1. A feeding hole is provided on one side of the top of the bubble bed body 1 for adding liquid materials. A cover plate 2 is detachably installed in the feeding hole via a slot or threaded connection. Two L-shaped fixing plates 25 are bolted to the outer wall of one side of the bubble bed body 1, and the support box 6 is welded to the upper surfaces of the two fixing plates 25. The support box 6 is a sealed cylindrical box, with a DN25 gas injection connector 7 welded through one side wall for connecting to an external gas delivery pipe. A normally open solenoid valve 21 is threadedly installed in the internal channel of the gas injection connector 7. Four delivery pipes 8 are welded at equal intervals to the bottom wall of the support box 6. The conveying pipe 8 is a stainless steel pipe. Its top end passes through and is welded to the bottom plate of the support box 6, and its bottom end extends downward and passes through the side wall of the bubble bed body 1. It is sealed to the bottom side wall of the bubble bed body 1 through a sealing flange, so that the outlet of the conveying pipe 8 is located inside the bubble bed body 1 near the bottom.

[0019] like Figure 5-6 As shown, defoaming components are installed on each delivery pipe 8. Each defoaming component includes a mounting pipe 9 welded to the inner wall of the top of the delivery pipe 8. Its top end extends upwards and through the wall of the delivery pipe 8, where a tapered pipe 10 is welded. The large end of the tapered pipe 10 faces upwards, and the small end faces downwards, connecting with the mounting pipe 9. A cross-shaped mounting bracket 11 is welded inside the tapered pipe 10. A rotating shaft 12 is rotatably connected to the center of the mounting bracket 11 via a pair of deep groove ball bearings. The bottom end of the rotating shaft 12 extends downwards into the interior of the mounting pipe 9. A helical blade 14 is fixedly fitted onto the rotating shaft 12 section located inside the mounting pipe 9 via a key connection, with a 1mm gap between the outer edge of the helical blade 14 and the inner wall of the mounting pipe 9. Similarly, a drive blade 13 is fixedly fitted onto the rotating shaft 12 section located inside the tapered pipe 10 via a key connection. The drive blade 13 is a three-bladed inclined blade, with its facing surface forming a 45° angle with the axis of the rotating shaft 12.

[0020] like Figure 5 As shown, a circular fixing bracket 15 is welded and fixed at the top outlet of the tapered tube 10. A tapered rubber tube 16 is bonded and fixed to the inner ring of the fixing bracket 15 through a vulcanization process. The small end of the tapered rubber tube 16 faces upward and the large end faces downward. On the inner wall of the tapered rubber tube 16, three inwardly protruding elastic bending portions 17 are uniformly molded in the circumferential direction, and the cross-section of each elastic bending portion 17 is a semi-circular protrusion.

[0021] like Figure 7As shown, the circulating gas injection component is installed on top of the bubble bed body 1. A rectangular transfer box 18 is welded and fixed to the inner side wall of the top of the bubble bed body 1 via a bracket. A miniature air pump 19 is bolted and fixed to the inner side wall of the top of the bubble bed body 1, with its air inlet facing the space above the liquid surface, and its air outlet connected to the air inlet on the side wall of the transfer box 18 via a PU hose. Multiple connecting pipes 20 are welded and fixed at equal intervals on the top wall panel of the transfer box 18, with their other ends extending upward and passing through the top of the bubble bed body 1, and welded and fixed to the top wall panel of the support box 6, connecting the internal space of the transfer box 18 and the support box 6.

[0022] like Figure 7-8 As shown, the adjusting component is installed inside the support box 6. An adjusting shaft 22 is rotatably connected to two opposite side walls of the support box 6 via a pair of sliding bearings. Two parallel mounting plates 23 are welded to the adjusting shaft 22, and an arc-shaped flow-limiting plate 24 is welded between the two mounting plates 23. The curvature of the arc-shaped flow-limiting plate 24 matches the curvature of the inner wall of the support box 6, and its outer surface is covered with a 2mm thick fluororubber sealing layer, allowing it to fit tightly against the inner wall of the support box 6. One end of the adjusting shaft 22 passes through the side wall of the support box 6 and extends to the outside, where a handwheel 27 is welded to. A friction brake ring 26 is bolted to the outer wall of the support box 6, and the adjusting shaft 22 passes through the central hole of the brake ring 26. By adjusting the locking screw on the brake ring 26, the frictional resistance of the adjusting shaft 22 during rotation can be increased.

[0023] like Figure 7 As shown, the conveying components are installed at the bottom of the bubble bed body 1. A circulation pump 29 is fixedly installed on the outer side of the bottom of the bubble bed body 1 by base bolts. The suction end of the circulation pump 29 is connected to a liquid outlet pipe 30, the top end of which extends upward and passes through the bottom wall panel of the bubble bed body 1, and its inlet end is located inside the bubble bed body 1 near the bottom. The discharge end of the circulation pump 29 is connected to a distribution box 31. Four flow tubes 32 are welded and fixed at equal intervals on the side wall of the distribution box 31. The top end of each flow tube 32 extends upward and is respectively inserted into the side wall opening of a conveying pipe 8, and the connection is sealed by clamps.

[0024] like Figure 7 As shown, a grid plate 5 is horizontally welded and fixed inside the bubble bed body 1, above all the conical rubber tubes 16. At the bottom of the grid plate 5, corresponding to the bottom of each circular hole, a conical spike 28 is welded. The conical spike 28 is a cone with a height of 15mm and a tip angle of 30°.

[0025] like Figure 7As shown, a pressure sensor 3 is also installed through the top wall of one side of the bubble bed body 1 to detect the air pressure inside the bed. An LED display screen 4 is installed on the outer wall of the other side of the bubble bed body 1, and the pressure sensor 3 is electrically connected to the display screen 4 through a signal line.

[0026] During operation, first open the cover plate 2, inject liquid into the bubble bed body 1 to the predetermined liquid level, and then close the cover plate 2. Connect the external gas source pipeline to the gas injection connector 7 and open the solenoid valve 21. After the gas enters the support box 6, it will be distributed to multiple delivery pipes 8 below. At this time, the operator can turn the handwheel 27 according to the process requirements. The handwheel 27 drives the adjusting shaft 22 to rotate, which in turn causes the arc-shaped flow limiting plate 24 welded on the mounting plate 23 to swing around the axis of the adjusting shaft 22. When the arc-shaped flow limiting plate 24 swings towards the inlet of the delivery pipe 8, it will partially block the inlet, thereby reducing the gas flow rate entering the delivery pipe 8 in that area; conversely, it will increase the flow rate. In this way, the gas injection volume at different positions can be adjusted. After adjustment, tighten the locking screw on the brake ring 26 to lock the adjusting shaft 22 using friction, preventing the arc-shaped flow limiting plate 24 from shifting position due to vibration during equipment operation. If the brake ring 26 is not installed, the vibration generated during the operation of the circulating pump 29 or the air pump 19 may be transmitted to the adjusting shaft 22, causing the arc-shaped flow restrictor 24 to rotate slightly, changing the preset gas distribution ratio and affecting the stability of the flow field inside the bed.

[0027] Gas enters the liquid in the bubble bed body 1 from the outlet of the delivery pipe 8, forming bubbles that flow upwards. Simultaneously, the circulation pump 29 is activated. The circulation pump 29 extracts the gas-liquid mixture from the bottom of the bubble bed body 1 through the outlet pipe 30, pumps it into the distribution box 31, then evenly distributes it to the four flow pipes 32, and finally re-injects it from the outlet of the flow pipes 32 back into the corresponding delivery pipes 8. This re-injected gas-liquid mixture mixes with fresh gas from the support box 6 in the delivery pipe 8, pushing the mixture upwards. When the mixture passes through the conical pipe 10, the impact force of the fluid acts on the drive blades 13, causing them to rotate the shaft 12. The rotation of the shaft 12 drives the spiral blades 14 located in the lower mounting pipe 9 to rotate synchronously. The rotation of the spiral blades 14 generates a shearing and stirring effect on the gas-liquid mixture flowing through the mounting pipe 9, helping to break up and refine larger bubbles.

[0028] Subsequently, the mixture flows upward through the conical rubber tube 16. As the flow cross-section of the conical rubber tube 16 gradually expands from bottom to top, the fluid pressure changes at this point. Under the action of fluid pressure, the tube wall of the conical rubber tube 16 and its inner elastic bend 17 generate periodic expansion and rebound vibrations. This repeated squeezing action creates additional disturbance to the gas-liquid mixture flowing through it, which can further break up the bubbles after the initial treatment by the helical blades 14. If the conical rubber tube 16 and the elastic bend 17 are not provided, relying solely on the mechanical shearing of the helical blades 14, when processing highly viscous liquids, some bubbles may rapidly coalesce due to the liquid's viscosity, and the defoaming effect will be weakened under certain operating conditions.

[0029] The gas-liquid mixture discharged from the conical rubber tube 16 continues to flow upward and impacts the grid plate 5. The fluid is forced through the small holes on the grid plate 5, while unbroken small bubbles suspended in the liquid are squeezed as they pass through the small holes or punctured by the conical spikes 28 at the bottom of the grid plate 5, thereby further reducing the amount of residual bubbles in the liquid.

[0030] After a period of gas injection, when the pressure sensor 3 detects that the pressure inside the bed has reached the set upper limit, the solenoid valve 21 can be closed to stop the external gas supply. At this time, the air pump 19 is started. The air pump 19 extracts the gas accumulated above the liquid surface inside the bubble bed body 1 and transports it to the transfer box 18. Then, the gas is reinjected into the support box 6 through four connecting pipes 20. This recovered gas, along with any trace amount of gas that may be carried out of the liquid by the circulation pump 29, re-enters the delivery pipe 8 to participate in the circulation. This process achieves internal gas recycling, reducing the consumption of fresh gas. The display screen 4 displays the pressure value detected by the pressure sensor 3 in real time for operator monitoring.

[0031] In this embodiment, the defoaming method combining the spiral blade 14 and the conical rubber tube 16 is based on the consideration of uneven bubble size distribution in actual engineering. If only high-speed mechanical shearing is used, although it is effective in breaking up large bubbles, it consumes a lot of energy and has limited effect on further eliminating small bubbles. However, by adding passive extrusion and disturbance by the conical rubber tube 16, a continuous treatment effect on small and medium-sized bubbles can be achieved without significantly increasing additional power. Under conditions of long-term operation and strict requirements on bubble size, this composite structure can maintain more stable defoaming performance.

[0032] This application can be used in the field of bubble bed technology, or in other fields applicable to this application.

[0033] In another embodiment: an improvement on the above embodiment: a gas-liquid composite fluidized bubble bed, which is applied to the field of bubble bed technology. The structure of this embodiment is basically the same as that of the previous embodiment, except that the specific structure of the defoaming component is different.

[0034] In this embodiment, the conical rubber tube 16 and the fixing bracket 15 are omitted. The top of the conical tube 10 serves directly as the outlet. To enhance the cutting effect on the rising airflow, a porous dispersion disc (not shown in the figure) is additionally welded and fixed to the extension of the rotating shaft 12 above the conical tube 10. This porous dispersion disc is a 50mm diameter, 2mm thick disc with several small holes of 1mm diameter evenly distributed on it. When the rotating shaft 12 is driven to rotate by the drive blade 13, the porous dispersion disc rotates synchronously at high speed, dispersing the gas-liquid mixture flowing out of the conical tube 10 into a finer jet, breaking up bubbles through liquid impact and shearing.

[0035] In addition, the brake ring 26 in the adjusting component is replaced with a graduated manual worm gear reducer (not shown in the figure). The end of the adjusting shaft 22 is connected to the worm gear, and the adjusting shaft 22 is precisely driven to rotate by rotating the worm. The self-locking characteristic of the worm gear can keep the position of the arc-shaped flow restrictor 24 stable, which is suitable for occasions that require more precise and stable flow regulation, but the cost is higher than that of the friction brake ring 26.

[0036] This invention proposes a method for using the above-described gas-liquid composite fluidized bed, comprising the following steps: S1. Open the cover plate 2 and inject the solution to be treated into the bubble bed body 1 through the feeding hole. Then, put the cover plate 2 back into the feeding hole to complete the feeding operation. S2. Connect the external gas supply pipe to the gas injection connector 7, and then open the solenoid valve 21 to allow the gas to enter the support box 6 through the gas injection connector 7. The gas is then injected into the bubble bed body 1 through multiple delivery pipes 8 that are fixedly installed at equal intervals on the bottom inner wall of the support box 6. During this process, the defoaming components installed on the delivery pipes 8 operate synchronously to eliminate bubbles in the liquid. Specifically, when the gas and solution are discharged upward through the installation pipe 9 and the conical pipe 10, the solution and gas generate an impact force on the drive blade 13, causing the drive blade 13 to rotate. The drive blade 13 drives the spiral blade 14 to rotate synchronously through the rotating shaft 12 to stir the solution and eliminate bubbles. At the same time, when the solution is discharged upward through the conical rubber tube 16, the pressure of the solution causes the conical rubber tube 16 to expand intermittently. The repeatedly expanding conical rubber tube 16 forms a squeezing force on the solution, which performs secondary treatment on the bubbles in the solution. S3. During the gas injection process, the adjustment shaft 22 is rotated by turning the handwheel 27 as needed. The adjustment shaft 22 moves the arc-shaped flow limiting plate 24 through the two mounting plates 23. The arc-shaped flow limiting plate 24 blocks multiple delivery pipes 8 to different degrees, thereby controlling the flow rate of gas entering each delivery pipe 8. After the adjustment is completed, the brake ring 26 limits the adjustment shaft 22 to keep the arc-shaped flow limiting plate 24 in a stable state. S4. After injecting an equal amount of gas into the bubble bed body 1, close the solenoid valve 21, and then start the circulation pump 29. The circulation pump 29 extracts the solution and gas in the bubble bed body 1 through the liquid outlet pipe 30, and disperses them into multiple delivery pipes 8 through the distribution box 31 and multiple flow pipes 32 to promote the fusion of solution and gas. S5. Simultaneously start the air pump 19. The air pump 19 draws the gas floating above the solution into the transfer box 18. Then, through multiple connecting pipes 20 that are fixedly installed at equal intervals on the inner wall of the top of the transfer box 18, the gas is reinjected into the support box 6. The gas is then injected into the bubble bed body 1 through multiple conveying pipes 8 to mix with the solution, thereby realizing the recycling of the gas. S6. When the solution discharged through the conical rubber tube 16 flows upward, the remaining air bubbles in the solution are squeezed or punctured by the grid plate 5 and multiple conical punctures 28, further reducing the air bubble content in the solution. S7. During the entire operation, the air pressure sensor 3 detects the air pressure inside the bubble bed body 1 in real time and transmits the detected pressure value to the display screen 4 for display. The operator controls the amount of air injected into the bubble bed body 1 according to the pressure value displayed on the display screen 4 to ensure that the bubble bed operates stably under suitable air pressure conditions.

[0037] However, as is well known to those skilled in the art, the working principles and wiring methods of the pressure sensor 3, display screen 4, air pump 19, solenoid valve 21 and circulation pump 29 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0038] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas-liquid composite fluidized bed, comprising a bubble bed body (1), characterized in that, Also includes: The support box (6) is fixedly installed on one side of the bubble bed body (1); Multiple delivery pipes (8) are fixedly installed at the bottom of the support box (6) and extend into the bubble bed body (1); Defoaming components are installed on each of the conveying pipes (8) to eliminate bubbles in the bubble bed body (1); A circulating gas injection component is installed on the top inner wall of the bubble bed body (1) and connected to the support box (6) for circulating gas in the bubble bed body (1) into the support box (6). The gas is distributed to the plurality of delivery pipes (8) via the support box (6), and after being processed by the defoaming component, it enters the bubble bed body (1). The circulating gas injection component draws the gas above the bubble bed body (1) back to the support box (6) for recirculation.

2. The gas-liquid composite fluidized bed according to claim 1, characterized in that, The defoaming component includes an installation pipe (9) fixedly installed on the inner wall of the top of the conveying pipe (8). The top end of the installation pipe (9) extends into the bubble bed body (1) and is fixedly installed with a conical pipe (10). A dispersion component is installed inside the conical pipe (10). When the gas and solution are discharged upward through the installation pipe (9) and the conical pipe (10), the dispersion component is driven to operate to eliminate bubbles in the solution.

3. The gas-liquid composite fluidized bed according to claim 2, characterized in that, The dispersion component includes a mounting bracket (11) fixedly installed inside the conical tube (10), a rotating shaft (12) rotatably connected to the mounting bracket (11), a spiral blade (14) fixedly sleeved on the rotating shaft (12) and located inside the mounting tube (9), and a drive blade (13) fixedly sleeved on the rotating shaft (12) and located inside the conical tube (10). The solution and gas exert an impact force on the drive blade (13), causing the drive blade (13) to rotate, and driving the spiral blade (14) to rotate through the rotating shaft (12) to eliminate air bubbles in the solution.

4. The gas-liquid composite fluidized bed according to claim 2, characterized in that, It also includes a fixing frame (15) fixedly installed on the top of the conical tube (10) and a conical rubber tube (16) fixedly installed on the inner side of the fixing frame (15). The inner side of the conical rubber tube (16) is provided with multiple elastic bends (17) at equal intervals. The pressure generated when the solution is discharged upward causes the conical rubber tube (16) to expand intermittently in order to squeeze the air bubbles in the solution.

5. The gas-liquid composite fluidized bed according to claim 1, characterized in that, The circulating gas injection component includes a transfer box (18) and an air pump (19) fixedly installed on the inner wall of the top of the bubble bed body (1), as well as multiple connecting pipes (20); the outlet end of the air pump (19) extends into the transfer box (18), one end of the multiple connecting pipes (20) is fixedly installed at equal intervals on the inner wall of the top of the transfer box (18), and the other end extends into the support box (6). The air pump (19) pumps the gas floating above the solution to the transfer box (18), and then re-injects it into the support box (6) through the multiple connecting pipes (20).

6. The gas-liquid composite fluidized bed according to claim 1, characterized in that, The adjustment component includes an adjustment shaft (22) rotatably connected to the inner wall of one side of the support box (6), two mounting plates (23) fixedly sleeved on the adjustment shaft (22), an arc-shaped flow limiting plate (24) fixedly installed on the two mounting plates (23), and a handwheel (27) fixedly installed at one end of the adjustment shaft (22). The arc-shaped flow limiting plate (24) is tightly fitted to the inner wall of the support box (6). By rotating the handwheel (27), the arc-shaped flow limiting plate (24) is moved to block the multiple delivery pipes (8), thereby controlling the flow rate of gas entering the delivery pipes (8).

7. The gas-liquid composite fluidized bed according to claim 6, characterized in that, The adjustment component also includes a brake ring (26) fixedly installed on one side of the support box (6), the adjustment shaft (22) passes through the brake ring (26) and fits tightly against the inner wall of the brake ring (26); the brake ring (26) is used to limit the adjustment shaft (22) after adjustment.

8. The gas-liquid composite fluidized bed according to claim 1, characterized in that, The conveying components include a circulation pump (29) fixedly installed on one side of the bottom of the bubble bed body (1), an outlet pipe (30) fixedly installed at the inlet end of the circulation pump (29), a distribution box (31) fixedly installed at the outlet end of the circulation pump (29), and multiple flow pipes (32). The top end of the outlet pipe (30) extends into the bubble bed body (1). One end of each of the multiple flow pipes (32) is fixedly installed at equal intervals on one side of the inner wall of the distribution box (31), and the other end extends into the corresponding conveying pipe (8). The circulation pump (29) extracts the solution and gas from the bubble bed body (1) and disperses them through the distribution box (31) and the multiple flow pipes (32) into the multiple conveying pipes (8) to promote the fusion of solution and gas.

9. The gas-liquid composite fluidized bed according to claim 4, characterized in that, A grid plate (5) is fixedly installed inside the bubble bed body (1). The grid plate (5) is located above the multiple fixed frames (15). Multiple cone-shaped piercing parts (28) are fixedly installed at equal intervals at the bottom of the grid plate (5). When the solution discharged through the conical rubber tube (16) flows upward, the grid plate (5) and the cone-shaped piercing parts (28) will squeeze or puncture the remaining bubbles in the solution.

10. A method of using a gas-liquid composite fluidized bed of bubbles according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Inject the solution to be treated into the bubble bed body (1) through the feeding hole; S2. Gas is injected into the bubble bed body (1) through multiple delivery pipes (8) via the gas injection connector (7) and support box (6). At the same time, the defoaming component on the delivery pipe (8) eliminates the bubbles in the liquid. S3. Control the flow rate of gas entering each delivery pipe (8) by adjusting the components; S4. After closing the solenoid valve (21), start the conveying component to extract the solution and gas in the bubble bed body (1) and disperse them back into multiple conveying pipes (8); S5. Start the circulating gas injection component to re-inject the gas floating above the solution into the support box (6) to realize the recycling of gas. S6. The solution discharged through the defoaming component further reduces the bubble content under the action of the grid plate (5) and the cone-shaped part (28); S7. The air pressure inside the bubble bed body (1) is monitored in real time by the air pressure sensor (3) and the display screen (4) to ensure stable operation.

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