Jet flow circulating high-efficiency stirring device

Abstract

The application discloses a kind of jet flow circulation efficient stirring device, it is related to the technical field of stirring equipment, including mixing tank, the bottom surface of mixing tank is provided with output main pipe, the bottom end both sides of output main pipe are provided with a branch pipe, the inside of mixing tank is further provided with mixing mechanism, and mixing mechanism includes inner ring assembly and reflux component, and inner ring assembly includes: inside hollow ring, inside hollow ring is arranged at the inside center of mixing tank, the side surface of inside hollow ring is connected with the inside side surface of mixing tank, and reflux component includes switching component and filter component, and switching component includes: bottom outflow ring, bottom outflow ring is arranged at the inside bottom surface of mixing tank, and filter component includes: transfer filter box, transfer filter box is arranged at the middle section of branch pipe in reflux end, in the scheme, by being provided with mixing mechanism, by circumferential convergence spin jet flow and unpowered self-driving impeller collaborative construction full-tank composite flow field, both eliminate center mixing dead zone, and realize jet flow kinetic energy cascade utilization.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, specifically to a jet circulation high-efficiency mixing device. Background Technology

[0002] Jet circulation agitators are important equipment in industrial solid-liquid mixing, liquid-liquid mixing, and gas-liquid dispersion processes. A typical jet circulation agitator system usually consists of a mixing tank, a circulating water pump, a jet pipeline, and a high-efficiency nozzle assembly. During operation, the circulating water pump pressurizes the liquid in the tank through the output pipeline. The liquid enters the tank as a high-speed jet through the nozzle. The jet generates a strong negative pressure zone in the mixing chamber, thereby drawing in the material from the bottom or sides of the container and shearing and mixing it with the high-speed jet. The mixed fluid is ejected from the nozzle with high kinetic energy, forming a powerful axial circulation agitation of the entire liquid in the tank, keeping components with different densities in a uniform suspension state.

[0003] Existing technologies also have some drawbacks. Traditional devices often use nozzles installed at a single point on the side of the tank wall, with high-pressure fluid being directly and obliquely injected into the tank. This injection method easily causes the jet to directly scour the opposite tank wall, resulting in a large amount of kinetic energy being dissipated instantly. Furthermore, it is impossible to form an effective three-dimensional flow field inside the tank. Due to the single jet path, an inaccessible mixing dead zone often forms in the central area of ​​the tank, leading to material stratification. To break through the dead zone, it is necessary to extend the circulation time or increase the pump power, resulting in energy waste. In addition, existing systems usually adopt a split design of "flat gate valve + independent Y-type filter". Under high solid content conditions, the sealing surface of the flat valve is easily blocked by particles, leading to sealing failure or valve malfunction. Although the independent filter can intercept impurities, its filter screen surface is prone to solid phase accumulation, resulting in increased pressure difference and flow rate reduction. Frequent shutdowns for disassembly and cleaning are required, which cannot meet the needs of 24-hour continuous production. The high-value solid materials intercepted by the filter are usually directly discharged or treated as hazardous waste, which not only wastes raw materials but also increases environmental treatment costs. Summary of the Invention

[0004] The purpose of this invention is to provide a jet circulation high-efficiency stirring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a jet circulation high-efficiency stirring device, comprising: A mixing tank is provided with an output main pipe on its bottom surface. A branch pipe is provided on both sides of the bottom end of the output main pipe. The two branch pipes are the discharge end and the return end, respectively. The mixing tank is also provided with a mixing mechanism inside. The mixing mechanism includes an inner ring assembly and a return assembly. The inner ring assembly includes an inner hollow ring. The inner hollow ring is located at the center of the mixing tank. The side surface of the inner hollow ring is connected to the inner side surface of the mixing tank. An internal water passage cavity is provided inside the inner hollow ring. The reflux assembly includes a switching component and a filtering component. The switching component includes a bottom outflow ring, which is disposed on the inner bottom surface of the mixing tank. An opening for connecting the output main pipe is provided at the center of the bottom outflow ring, and a switching cylinder is provided on the upper surface of the bottom outflow ring. The filtration component includes: a transfer filter box, which is located in the middle section of the branch pipe at the return end, a filter plate is provided inside the transfer filter box, and a bottom collection box is provided on the bottom surface of the transfer filter box.

[0006] Furthermore, the bottom surface of the inner hollow ring is provided with a connecting through hole, and the inner side surface of the inner hollow ring is provided with four outlet heads, which are connected to the internal water passage cavity. Each of the four outlet heads is provided with a narrowing nozzle at its upper end.

[0007] Furthermore, the inner side surface of the hollow ring is provided with four connecting brackets, the upper surface of the four connecting brackets is provided with a flow-gathering top cover, the bottom center of the four connecting brackets is provided with a conical flow-dividing block, the bottom surface of the conical flow-dividing block is provided with a connecting shaft, and the bottom surface of the connecting shaft is provided with a stirring impeller.

[0008] Furthermore, a telescopic motor is provided on the upper surface of the switching cylinder, a sealing plate is provided at the end of the output shaft of the telescopic motor, and a limiting ring is provided at the center of the upper surface of the switching cylinder to prevent the sealing plate from leaving.

[0009] Furthermore, a ball-shaped filter screen is provided on the bottom surface of the sealing plate, a conveying short pipe is provided on the bottom surface of the ball-shaped filter screen, a sealing plate is provided on the bottom surface of the conveying short pipe, and a circular hole communicating with the conveying short pipe is opened at the center of the sealing plate on the bottom surface of the conveying short pipe.

[0010] Furthermore, the bottom collection box is provided with a material discharge ramp and a storage cavity inside. A small motor is provided on one side surface of the bottom collection box. A rotating shaft is provided on the output end of the small motor. An opening and closing plate is provided on the bottom surface of the rotating shaft.

[0011] Furthermore, a water pump is provided at the end of the branch pipe at the return end, and a return pipe is provided at the output end of the water pump. One end of the return pipe is connected to a connecting through hole on the bottom surface of the internal hollow ring. A flushing branch pipe is provided on the bottom surface of the return pipe, and an electric valve is provided at the connection between the flushing branch pipe and the return pipe.

[0012] Furthermore, one end of the flushing branch pipe is connected to one side of the bottom collection box, and a return branch pipe is provided at the end of the bottom collection box away from the flushing branch pipe. One end of the return branch pipe is inserted into the interior of the mixing tank, and a one-way valve is provided at the end of the return branch pipe.

[0013] Furthermore, the converging top cover includes an upper cover and a lower cover arranged coaxially, with a gap channel between them. The upper cover has a downwardly extending upper cover insert at its axial center, and the upper cover insert has an inverted T-shaped cross-section. The lower cover has a corresponding matching insertion hole for the lower section of the upper cover insert. The inner surface of the upper cover has an upper protrusion, and the outer surface of the lower cover has a lower protrusion. Both the upper and lower protrusions are located within the gap channel, and they collide when the lower cover moves axially up and down relative to the upper cover. This configuration allows the lower cover to rotate and move axially up and down relative to the upper cover when the narrow nozzle sprays downwards. During this process, the upper and lower protrusions collide, generating vibration that accelerates the fluid's descent, reduces the scouring force on the lower cover, and prevents fluid from remaining on the lower cover surface.

[0014] Furthermore, the lower end face of the upper cover is provided with an inwardly extending convex edge that forms an inner convex edge that blocks the lower end face of the lower cover. The upper end face of the convex edge that contacts the lower end face of the lower cover is sloped. This design effectively prevents fluid from entering the gap channel between the upper and lower covers, and the sloped design ensures that even if a small amount of fluid enters, it can be quickly discharged.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this solution, the inclusion of an inner ring component effectively solves the problems of disordered kinetic energy dissipation and the formation of mixing dead zones within the tank. The circumferential closed-loop structure of the internal water passage cavity stabilizes and evenly distributes the high-pressure water. The four evenly distributed outlet heads, combined with the tapered flow channel of the narrowing nozzle, transform the high-pressure water into four high-speed jets that converge precisely towards the central axis of the mixing tank, reducing the kinetic energy waste caused by the direct impact of traditional jets on the tank wall. The umbrella-shaped bottom surface of the converging top cover guides the four scattered streams in an orderly manner to the central axis, avoiding turbulent flow. The circumferential guide slope of the conical flow divider further smooths the obliquely flowing fluid into a downward flow state, precisely impacting the stirring impeller on the connecting shaft. This drives the impeller to rotate stably without an external power source, improving the kinetic energy utilization rate of the jet compared to traditional single-point lateral jets. Simultaneously, the rotating helical blades generate strong shear force, which, combined with the composite flow field formed by the circumferential swirling jet, eliminates the mixing dead zone in the center of the tank, thus preventing the mixing effect from being affected. 2. In this solution, the addition of a switching component effectively solves the operational pain points of traditional split-type flat valves, such as easy jamming, multiple leakage points, and disconnect between filtration and switching functions under high solid content conditions. A switching cylinder is fixedly installed on the bottom outlet ring. A telescopic motor drives the sealing plate to move axially along the switching cylinder. Through the cooperation between the sealing plate and the round hole on the bottom surface of the conveying short pipe, the path switching between the return end and the outlet branch pipe is realized. When the sealing plate moves down during the mixing stage, it fits tightly with the round hole of the conveying short pipe. At this time, the liquid in the mixing tank must first flow through the ball cover filter screen for pre-filtration before entering the main outlet pipe to intercept large particles of impurities and reduce the subsequent processing load. When discharge is required during the discharge stage, the telescopic motor retracts, causing the sealing plate and the ball cover filter screen to move upward synchronously, fully exposing the central opening of the bottom outlet ring. This allows the uniformly mixed material to be discharged directly through the outlet branch pipe without the need for an additional filtration stage. The free switching between filtration and discharge functions can reduce the valve jamming rate.

[0016] 3. In this solution, the inclusion of a filtration component effectively solves the problem of high-solids material waste in traditional reflux jet circulation. The reflux liquid, after initial filtration through the spherical filter screen, enters the intermediate filter box where secondary solid-liquid separation is achieved via an internal filter plate. The trapped raw material particles slide down the inclined filter plate under gravity to the discharge ramp in the bottom collection box. The angle of the discharge ramp ensures smooth sliding of the particles into the storage chamber for temporary storage. When the backflushing program is initiated according to the preset operating cycle, a small motor drives the rotating shaft to rotate, causing the opening and closing plate to flip, thus connecting the storage chamber and the discharge ramp. Complete isolation prevents particles from flowing back to the filter plate surface during backflushing and causing secondary blockage. Then, the electric valve of the flushing branch at the bottom of the return pipe is opened, and the high-pressure water output from the water pump is drawn into the storage chamber to backflush the trapped particles. The flushing water carrying the raw material particles is sent back to the mixing tank through the return branch to re-participate in the mixing. The one-way valve at the end of the return branch opens when the backflushing pressure reaches the threshold, which can effectively prevent high-pressure materials in the tank from flowing back into the filter components. This creates a closed-loop particle processing path of "filtration-temporary storage-high-pressure return", which can reduce the loss of high solids content materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the present invention; Figure 3 This is a schematic diagram of the internal structure of the switching component of the present invention; Figure 4 This is a schematic diagram of the internal hollow ring structure and the current-concentrating top cover of the present invention; Figure 5 This is a schematic diagram of the internal structure of the hollow ring of the present invention; Figure 6 This is a schematic diagram of the flow-concentrating shroud and conical flow-diverting block structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the transfer filter box of the present invention; Figure 8 This is a schematic diagram of the internal structure of the bottom collection box of the present invention; Figure 9 This is a schematic diagram of the specific structure of the current-concentrating top cover of the present invention.

[0018] In the diagram: 1. Mixing tank; 2. Main output pipe; 3. Branch pipe; 4. Transfer filter box; 5. Water pump; 6. Return pipe; 7. Flushing branch pipe; 8. Return branch pipe; 9. Internal hollow ring; 10. Concentrating top cover; 11. One-way valve; 12. Switching cylinder; 13. Bottom outlet ring; 14. Conveying short pipe; 15. Ball cover filter screen; 16. Sealing plate; 17. Telescopic motor; 18. Restricting ring; 19. Outlet head; 20. Narrowing nozzle; 21. Conical diverter block; 22. Internal 23. Water passage chamber; 24. Connecting through hole; 25. Connecting bracket; 26. Connecting shaft; 27. Agitator impeller; 28. Filter plate; 29. ​​Bottom collection box; 30. Small motor; 31. Rotating shaft; 32. Opening and closing plate; 33. Discharge ramp; 104. Storage chamber; 105. Upper cover; 106. Lower cover; 107. Gap channel; 108. Upper cover insert; 109. Insertion hole; 100. Upper protrusion; 101. Lower protrusion; 100. Inner convex edge; 101. Sloping shape. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 8 A jet circulation high-efficiency stirring device, comprising: The mixing tank 1 serves as the carrier for material mixing and reaction. A main output pipe 2 is vertically positioned at the center of its bottom surface. A branch pipe 3 is located on each side of the bottom end of the main output pipe 2. The two branch pipes 3 are respectively defined as the discharge end for discharging material and the return end for media reflux. Switching between operating conditions is achieved through valve control. The mixing tank 1 also contains a mixing mechanism, which includes an inner ring assembly and a reflux assembly. The inner ring assembly is the core unit for jet generation and kinetic energy conversion. The inner ring assembly includes an inner hollow ring 9, located at the center of the mixing tank 1. The side surface of the inner hollow ring 9 is connected to the inner side surface of the mixing tank 1. An internal water passage cavity 22 is provided inside the inner hollow ring 9, and a connecting through hole 23 is opened on the bottom surface of the inner hollow ring 9. The inner side surface of the hollow ring 9 is provided with four outlet heads 19, which are connected to the internal water passage cavity 22. Each of the four outlet heads 19 is provided with a narrowing nozzle 20 at its upper end. The narrowing nozzle 20 adopts a gradually narrowing flow channel design to efficiently convert static pressure energy into kinetic energy and form a high-speed jet. The inner side surface of the hollow ring 9 is also provided with four connecting brackets 24. The upper surface of the four connecting brackets 24 is provided with a flow-gathering top cover 10. The flow-gathering top cover 10 is umbrella-shaped and is used to converge the jet. The bottom center of the four connecting brackets 24 is provided with a conical flow divider block 21. The bottom surface of the conical flow divider block 21 is provided with a connecting shaft 25. The bottom surface of the connecting shaft 25 is provided with a stirring impeller 26. The stirring impeller 26 is used to generate rotation after being impacted by the jet, thereby enhancing the axial mixing effect of the medium in the tank. In use, high-pressure water is transported through the return pipe 6 of the return assembly, and then injected into the circumferentially closed-loop internal water passage 22 through the connecting through hole 23 on the bottom of the internal hollow ring 9. The annular structure of the internal water passage 22 can stabilize the pressure and even outflow of the high-pressure water. Subsequently, four outlet heads 19 evenly distributed at ninety degrees guide the high-pressure water to the narrowing nozzle 20. The gradually narrowing flow channel of the narrowing nozzle 20 can further increase the water flow velocity, ultimately forming four high-speed jets that are obliquely upward and converge toward the central axis of the mixing tank 1. Compared with the problem of traditional lateral jets that easily hit the tank wall and cause disordered dissipation of kinetic energy, in this scheme, the jets first impact the umbrella-shaped converging top cover 10. The bottom surface, with its umbrella-shaped curved surface, guides the four scattered streams in an orderly manner to the central axis of the mixing tank 1, significantly reducing the kinetic energy loss caused by the disorderly jet scouring of the tank wall. Subsequently, the converging water flow impacts the circumferential guide slope of the conical diverter block 21. The guide slope can smoothly adjust the obliquely flowing fluid to a vertically downward flow state. The fluid, after flow channel optimization, precisely impacts the stirring impeller 26 on the connecting shaft 25. The spiral blades of the stirring impeller 26 can generate strong shear force after being impacted, driving the impeller to rotate stably without an external power source, effectively alleviating the problem of the central mixing dead zone in the tank. This significantly improves the kinetic energy utilization rate compared to the traditional single-point lateral jet structure.

[0021] The reflux assembly includes a switching component and a filtering component that work together. The switching component is the core unit that realizes the switching of reflux / discharge path and also has a pre-filtration function. The switching component includes: a bottom outlet ring 13, which is coaxially embedded and fixed in the center of the inner bottom of the mixing tank 1. Its bottom surface is fixedly connected to the inner bottom of the mixing tank 1. An opening is provided at the center that is coaxially connected to the top of the output pipe 2. A switching cylinder 12 is provided on the upper surface of the bottom outlet ring 13. A telescopic motor 17 is provided on the upper surface of the switching cylinder 12. A sealing plate 16 is provided at the end of the output shaft of the telescopic motor 17. A limiting ring 18 is also provided at the center of the upper surface of the switching cylinder 12 to prevent the sealing plate 16 from leaving. An inverted ball cover filter 15 is provided on the bottom surface of the sealing plate 16. A conveying short pipe 14 is provided on the bottom surface of the ball cover filter 15. A sealing plate 16 is provided on the bottom surface of the conveying short pipe 14. A round hole communicating with the conveying short pipe 14 is provided at the center of the sealing plate 16 on the bottom surface of the conveying short pipe 14. The telescopic motor 17 of the switching component drives the sealing plate 16 to move axially within the switching cylinder 12. By dynamically adjusting the fit between the sealing plate 16 and the bottom circular hole of the conveying short pipe 14, the path switching between the return end and the outlet branch pipe 3 is achieved. When in the mixing stage where liquid is drawn from the mixing tank 1 for return to assist mixing, the spherical filter screen 15 moves downward, and the sealing plate 16 on its bottom surface forms a tight fit with the circular hole on the bottom surface of the conveying short pipe 14, sealing the opening in the center of the bottom outlet ring 13. At this time, the opening in the center of the bottom outlet ring 13 is only connected to the branch pipe 3 at the return end. Before entering the output main pipe 2, the liquid in the mixing tank 1 must first flow through the spherical filter screen 15. The arc-shaped structure of the spherical screen increases the effective filtration area, which can pre-filter the liquid and intercept large particulate impurities to reduce subsequent... The limiting ring 18 at the top of the switching cylinder 12 can precisely constrain the upward stroke of the sealing plate 16, preventing the sealing plate 16 from falling out of the switching cylinder 12 and causing structural damage. When the mixed liquid in the mixing tank 1 is discharged as a whole, the telescopic motor 17 is driven to retract by the external control signal, which drives the sealing plate 16 and the ball cover filter screen 15 to move upward synchronously, fully exposing the opening in the center of the bottom outflow ring 13, so that the opening in the center of the bottom outflow ring 13 is connected to the branch pipe 3 at the discharge end, realizing the directional discharge of the uniformly mixed material. When it is necessary to switch the path of the two branch pipes 3, the switching valve inside the output main pipe 2 and the telescopic motor 17 form a linkage control, which precisely switches the path of the liquid to the two branch pipes 3 according to the working conditions, avoiding misoperation that affects the stability of operation.

[0022] The filtration component, as the core unit for secondary solid-liquid separation and closed-loop recycling of the reflux medium, includes: a transfer filter box 4, which is connected in series to the inlet side of the reflux end branch pipe 3 and is located in the middle section of the reflux end branch pipe 3. The transfer filter box 4 contains a filter plate 27, which has a higher filtration accuracy than the ball-shaped filter screen 15, enabling secondary solid-liquid separation of the reflux medium and preventing large particles from entering the pump 5 and causing impeller wear. A bottom collection box 28 is located on the bottom surface of the transfer filter box 4, and the bottom collection box 28 contains a discharge ramp 32 and a storage chamber 33. A small motor 29 is located on one side of the bottom collection box 28. A rotating shaft 30 is provided on the output end of the machine 29. An opening and closing plate 31 is provided on the bottom surface of the rotating shaft 30. A water pump 5 is provided at the end of the branch pipe 3 at the return end. A return pipe 6 is provided at the output end of the water pump 5. One end of the return pipe 6 is connected to the connecting through hole 23 on the bottom surface of the internal hollow ring 9. A flushing branch pipe 7 is provided on the bottom surface of the return pipe 6. An electric valve is provided at the connection between the flushing branch pipe 7 and the return pipe 6. One end of the flushing branch pipe 7 is connected to one side of the bottom collection box 28. A return branch pipe 8 is provided at the end of the bottom collection box 28 away from the flushing branch pipe 7. One end of the return branch pipe 8 is inserted into the interior of the mixing tank 1. A one-way valve plate 11 is provided at the end of the return branch pipe 8. After the initial filtration by the ball-shaped filter screen 15, the water flowing into the branch pipe 3 at the return end undergoes secondary filtration in the intermediate filter box 4 before entering the pump 5. Solid-liquid separation occurs again through the inclined filter plate 27. The separated liquid is pressurized by the pump 5 and then sent to the return pipe 6. The trapped raw material particles slide down the filter plate 27 to the discharge ramp 32 of the bottom collection box 28, and are finally temporarily stored in the storage chamber 33. A backflushing process is performed periodically. The backflushing process begins with... The small motor 29 driven by the operator drives the rotating shaft 30 to rotate, controlling the opening and closing plate 31 to flip, separating the storage chamber 33 from the discharge slide 32. Then, the operator starts the electric valve of the flushing branch pipe 7 at the bottom of the return pipe 6. The high-pressure water output by the water pump 5 is diverted through the flushing branch pipe 7 when passing through the return pipe 6, and the water flows into the backwash storage chamber 33 to carry the raw material particles stored inside. The raw material particles are then sent back to the mixing tank 1 through the return branch pipe 8 for remixing.

[0023] The current-concentrating top cover 10 can be specifically configured as an upper cover 101 and a lower cover 102 arranged coaxially, with a gap channel 103 between the upper cover 101 and the lower cover 102. The upper cover 101 has a downwardly extending upper cover insert 104 at its axial center. The upper cover insert 104 has an inverted T-shaped cross-section. The lower cover 102 has a corresponding matching insertion hole 105 for the lower section of the upper cover insert 104 to be inserted. The inner surface of the upper cover 101 has an upper protrusion 106, and the outer surface of the lower cover 102 has a lower protrusion 107. The upper protrusion 106 and the lower protrusion 107 are both located within the gap channel 103, and the upper protrusion 106 and the lower protrusion 107 will collide when the lower cover 102 moves axially up and down relative to the upper cover 101. With this configuration, when the narrow nozzle 20 sprays towards the lower cover 102, if the spray force is large, it can correspondingly drive the lower cover 102 to rotate relative to the upper cover 101 and move axially up and down. During this process, the upper protrusion 106 and the lower protrusion 107 will collide, thereby generating a vibration force, which not only accelerates the flow of fluid but also reduces the scouring force of the fluid on the lower cover 102, while also preventing fluid from remaining on the surface of the lower cover 102. The lower end face of the upper cover 101 is provided with an inwardly extending inner protruding edge 108 that forms a shield against the lower end face of the lower cover. The upper end face of the inner protruding edge 108 that contacts the lower end face of the lower cover 102 is sloped 109. This configuration can effectively prevent fluid from entering the gap channel 103 between the upper cover 101 and the lower cover 102, and the sloped 109 design ensures that even if a small amount of fluid enters, it can be quickly discharged.

[0024] Working principle: When this device is in operation, it first enters the mixing stage. The water pump 5 starts, and the liquid in the mixing tank 1 enters the branch pipe 3 at the return end through the bottom outflow ring 13. The liquid first passes through the ball cover filter screen 15 for pre-filtration, and then enters the transfer filter box 4. Under the action of the inclined filter plate 27, secondary solid-liquid separation is achieved. The trapped particles slide into the storage chamber 33 of the bottom collection box 28 for temporary storage, and the filtrate enters the water pump 5 for pressurization. The high-pressure water flows through the return pipe 6 to the connecting through hole 23 on the bottom surface of the inner hollow ring 9, and is injected into the circumferential closed-loop internal water passage 22 to stabilize the pressure. After the flow is evenly distributed, four outlet heads 19 evenly distributed at 90 degrees guide the high-pressure water to the narrow nozzle 20, forming four high-speed jets that are obliquely upward and converge at the central axis of the mixing tank 1. The jets first impact the umbrella-shaped bottom surface of the converging top cover 10 and are guided to the central axis to reduce the scouring loss of the tank wall; then they impact the circumferential guide slope of the conical diverter block 21, and the flow pattern is adjusted to be vertically downward and precisely impacts the stirring impeller 26 connected to the rotating shaft 25, driving it to rotate without power. Together with the circumferential jet, a composite flow field is formed, which effectively eliminates the central dead zone and improves the kinetic energy utilization rate. During the mixing stage, the telescopic motor 17 of the switching component drives the sealing plate 16 to move downward, blocking the round hole on the bottom surface of the conveying short pipe 14 through the sealing plate 16, so that the central opening of the bottom outflow ring 13 is only connected to the branch pipe 3 at the return end. At the same time, the ball cover filter screen 15 automatically scrapes off the attached particles during movement, reducing the risk of blockage. The limiting ring 18 restricts the stroke of the sealing plate 16 to prevent it from falling out. When the mixture is uniform, it enters the discharge stage. The telescopic motor 17 retracts and drives the sealing plate 16 to move upward, exposing the central opening of the bottom outflow ring 13 so that it is connected to the branch pipe 3 at the discharge end. The mixed liquid is discharged from here. The switching valve in the output main pipe 2 is linked with the telescopic motor 17 to ensure accurate path switching. During operation, the device periodically performs a backflushing procedure. The small motor 29 drives the rotating shaft 30 to rotate, causing the opening and closing plate 31 to flip and isolate the storage chamber 33 from the discharge slide 32. Then, the electric valve of the flushing branch pipe 7 at the bottom of the return pipe 6 is opened. The high-pressure water output by the water pump 5 is diverted into the storage chamber 33 through the flushing branch pipe 7, which backflushes and entrains the trapped raw material particles. The particles are then sent back to the mixing tank 1 through the one-way valve plate 11 at the end of the return branch pipe 8 to re-participate in the mixing, thus achieving online slag removal and zero material waste.

Claims

1. A jet-circulating high-efficiency stirring device, characterized in that, include: A mixing tank is provided with an output main pipe on its bottom surface. A branch pipe is provided on both sides of the bottom end of the output main pipe. The two branch pipes are the discharge end and the return end, respectively. The mixing tank is also provided with a mixing mechanism inside. The mixing mechanism includes an inner ring assembly and a return assembly. The inner ring assembly includes an inner hollow ring. The inner hollow ring is located at the center of the mixing tank. The side surface of the inner hollow ring is connected to the inner side surface of the mixing tank. An internal water passage cavity is provided inside the inner hollow ring. The reflux assembly includes a switching component and a filtering component. The switching component includes a bottom outflow ring, which is disposed on the inner bottom surface of the mixing tank. An opening for connecting the output main pipe is provided at the center of the bottom outflow ring, and a switching cylinder is provided on the upper surface of the bottom outflow ring. The filtration component includes: a transfer filter box, which is located in the middle section of the branch pipe at the return end, a filter plate is provided inside the transfer filter box, and a bottom collection box is provided on the bottom surface of the transfer filter box.

2. The jet circulation high-efficiency stirring device according to claim 1, characterized in that: The bottom surface of the inner hollow ring is provided with a connecting through hole, and the inner side surface of the inner hollow ring is provided with four outlet heads. The outlet heads are connected to the internal water passage cavity, and the upper end of each of the four outlet heads is provided with a narrowing nozzle.

3. The jet circulation high-efficiency stirring device according to claim 2, characterized in that: The inner side surface of the hollow ring is also provided with four connecting brackets. The upper surface of the four connecting brackets is provided with a flow-gathering top cover. The bottom center of the four connecting brackets is provided with a conical flow-dividing block. The bottom surface of the conical flow-dividing block is provided with a connecting shaft. The bottom surface of the connecting shaft is provided with a stirring impeller.

4. The jet circulation high-efficiency stirring device according to claim 1, characterized in that: A telescopic motor is provided on the upper surface of the switching cylinder, and a sealing plate is provided at the end of the output shaft of the telescopic motor. A limiting ring is also provided at the center of the upper surface of the switching cylinder to prevent the sealing plate from leaving.

5. The jet circulation high-efficiency stirring device according to claim 4, characterized in that: The bottom surface of the sealing plate is provided with a ball-shaped filter screen, the bottom surface of the ball-shaped filter screen is provided with a conveying short pipe, the bottom surface of the conveying short pipe is provided with a sealing plate, and a circular hole communicating with the conveying short pipe is opened at the center of the sealing plate on the bottom surface of the conveying short pipe.

6. The jet circulation high-efficiency stirring device according to claim 1, characterized in that: The bottom collection box has a material discharge ramp and a storage cavity inside. A small motor is provided on one side surface of the bottom collection box. A rotating shaft is provided on the output end of the small motor. An opening and closing plate is provided on the bottom surface of the rotating shaft.

7. The jet circulation high-efficiency stirring device according to claim 6, characterized in that: A water pump is installed at the end of the branch pipe at the return end, and a return pipe is installed at the output end of the water pump. One end of the return pipe is connected to a connecting through hole on the bottom surface of the internal hollow ring. A flushing branch pipe is installed on the bottom surface of the return pipe, and an electric valve is installed at the connection between the flushing branch pipe and the return pipe.

8. The jet circulation high-efficiency stirring device according to claim 7, characterized in that: One end of the flushing branch pipe is connected to one side of the bottom collection box. The bottom collection box is provided with a return branch pipe at the end opposite to the flushing branch pipe. One end of the return branch pipe is inserted into the interior of the mixing tank. A one-way valve is provided at the end of the return branch pipe.

9. The jet circulation high-efficiency stirring device according to claim 3, characterized in that: The current-concentrating top cover includes an upper cover and a lower cover arranged coaxially, with a gap channel between the upper cover and the lower cover. The upper cover has a downwardly extending upper cover insert post at its axial center. The upper cover insert post has an inverted T-shaped cross-section. The lower cover has a corresponding matching insertion hole for the lower section of the upper cover insert post to be inserted. The inner surface of the upper cover has an upper protrusion, and the outer surface of the lower cover has a lower protrusion. Both the upper and lower protrusions are located within the gap channel, and the upper and lower protrusions will collide when the lower cover moves axially up and down relative to the upper cover.

10. The jet circulation high-efficiency stirring device according to claim 9, characterized in that: The lower end face of the upper cover is provided with an inwardly extending convex edge that forms an inner convex edge that covers the lower end face of the lower cover. The upper end face of the convex edge that contacts the lower end face of the lower cover is sloped.

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