A hybrid stirred tank and intelligent control system thereof

Abstract

This invention belongs to the field of intelligent equipment technology, specifically a mixing tank and its intelligent control system. It includes a main module, an intelligent sensing and analysis module, and a stirring execution module. The main module includes a tank body with a top cover and a feed inlet on the top cover, and a support frame and a discharge outlet at the bottom of the tank body. The intelligent sensing and analysis module includes intelligent monitoring sensors and a PLC intelligent control system. This application utilizes the intelligent sensing and analysis module and intelligent detection sensors arranged on the tank body, such as intelligent temperature sensors, intelligent pressure sensors, and intelligent concentration sensors, to collect data on the temperature, pressure, and concentration in different areas inside the tank. This data is then used to analyze the mixing conditions of the raw materials in different areas of the tank, thereby adjusting the stirring intensity inside the tank and improving the mixing status of the raw materials.

Description

Technical Field

[0001] This invention belongs to the field of intelligent equipment technology, specifically a mixing tank and its intelligent control system. Background Technology

[0002] In industries such as chemical, pharmaceutical, textile, papermaking, and food processing, mixing equipment is often used to stir materials. Mixing is a device that forces the convection of liquid, solid, and gaseous media to mix them uniformly. The mixing tank is a commonly used mixing equipment in chemical plants. It mainly uses an electric motor to drive the mixing shaft to stir the reactants so that they can react fully to obtain the desired substances.

[0003] In the production of chemical products, the process of mixing and stirring various chemical raw materials to form new chemical raw materials is very important. The degree of uniformity of mixing between the chemical raw materials directly affects the quality of the final chemical product. When there are solid and liquid forms among the chemical raw materials to be mixed, it is necessary to promote the full dissolution of the solid raw materials and mix them into the liquid raw materials. However, in actual use, the processors have found that during the dissolution and mixing process, the solid raw materials tend to aggregate and settle, easily adhering to the bottom of the mixing container and even clumping, making it difficult to fully mix them into the liquid raw materials.

[0004] Furthermore, the existing mixing and processing equipment lacks sufficient intelligence and automation, making it difficult for processing personnel to promptly perceive the mixing status of raw materials inside the mixing container and adjust the working intensity of the mixing equipment accordingly. It is also difficult to flexibly adjust the working parameters of the mixing equipment, thus failing to maximize the thorough mixing of chemical raw materials. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a mixing tank and its intelligent control system.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention proposes a mixing tank, including a main module, an intelligent sensing and analysis module and a mixing execution module. The main module includes a tank body, a top cover is provided on the top of the tank body, a feed inlet is provided on the top cover, and a support frame and a discharge outlet are provided at the bottom of the tank body. The intelligent sensing and analysis module includes intelligent monitoring sensors and a PLC intelligent control system. The intelligent monitoring sensors are distributed in different positions inside the tank to sense the mixing of raw materials inside the tank and feed the monitored data back to the PLC intelligent control system to control the start of the agitator deployed inside the tank in the stirring execution module. A shielding plate is installed at the bottom of the tank. A gap is maintained between the edge of the shielding plate and the inner wall of the tank. A connecting groove is provided in the middle of the lower surface of the shielding plate. An intercepting net is installed at the bottom opening of the connecting groove. The shielding plate is connected to the propulsion device at the bottom of the tank.

[0007] Preferably, a shielding cover is provided on the inner wall of the tank. The shielding cover has a ring structure around the agitator in the middle, and the area between the outer surface of the shielding cover and the inner wall of the tank is a gathering gap. A closing ring is provided on the inner wall of the tank at the bottom of the gathering gap. A guide groove is provided on the inner wall of the shielding cover near the top. The edge of the shielding plate slides in contact with the bottom inner surface of the shielding cover, and the gathering gap communicates with the bottom area of ​​the shielding plate through a drain hole provided on the closing ring.

[0008] Preferably, a guide plate is provided on the inner wall of the shield located on one side of the guide channel, and the guide plate is inclined.

[0009] Preferably, the inner wall of the tank is uniformly provided with partition blocks, which are located inside the aggregation gap and are distributed in a ring around the central axis of the tank. The separator has a tapered cross-section and divides the gathering gap into multiple flow guiding zones. These flow guiding zones extend vertically downwards and communicate with the area below the shielding plate.

[0010] Preferably, a separation plate is provided inside the flow guiding area. The separation plate is a filter plate structure, and one end of the separation plate is rotatably connected to the outer surface of the shielding cover. A torsion spring is provided at the rotatable connection part, and the other end is in contact with the inner wall of the tank. The separation plate divides the inside of the flow guide area into an inlet area and an outlet area. The inlet area is connected to the flow guide channel, and the bottom of the outlet area is connected to the gap area at the bottom of the shielding plate through a drain hole. A locking block is installed on the inner wall of the tank corresponding to the inlet area, and the locking block contacts the end of the separation plate.

[0011] Preferably, an installation groove is provided on the side of the separation plate near the liquid inlet area, a guide plate is slidably embedded in the installation groove, and one end of the guide plate is rotatably connected to the inner wall of the installation groove, and a torsion spring is provided at the rotatable connection part.

[0012] Preferably, the agitator includes a rotating shaft installed in the middle of the tank, the upper end of the rotating shaft being connected to the output end of the drive device on the upper side of the top cover, and the lower side of the rotating shaft being slidably connected to the shielding plate. Guide vanes are provided on the side wall of the rotating shaft corresponding to the guide channel. The guide vanes are installed vertically and have flow channels on their surfaces to guide the contacting raw material to flow into the guide channel. Lifting vanes are provided on the side wall of the rotating shaft below the guide vanes. The lifting vanes are inclined to guide the contacting raw material to flow vertically upward.

[0013] Preferably, a turbulence ring is uniformly arranged on the upper arc-shaped surface of the shielding plate, and the turbulence ring has a triangular cross-section and extends circumferentially around the central axis of rotation; The upper surface of the shielding plate is covered with a protective film made of elastic material. The part of the protective film that contacts the turbulence ring is lifted up, so that a ring-shaped turbulence protrusion is formed on the upper surface of the protective film. An impact hole is provided on the outer surface of the protrusion in the middle of the shielding plate, and the opening of the impact hole points towards the direction close to the turbulence protrusion.

[0014] Preferably, the intercepting net extends to cover the bottom surface of the shielding plate, and the shielding plate is provided with a permeation hole at the part corresponding to the turbulence ring. The bottom of the permeation hole communicates with the gap between the intercepting net and the shielding plate, and the top opening of the permeation hole is located on the conical end of the turbulence ring. Liquid outlet holes are evenly distributed in the area between adjacent turbulence protrusions on the protective membrane, and the gap between the liquid outlet holes and the upper surface of the protective membrane and the shielding plate is connected.

[0015] A smart control system for a mixing tank is provided. The smart control system is used to control the automatic operation of the aforementioned mixing tank. The smart control system includes a data acquisition unit, a data analysis and control unit, an execution unit, a human-machine interaction unit, a data storage unit, and a safety interlock unit.

[0016] The beneficial effects of this invention are as follows: The present invention discloses a mixing tank and its intelligent control system, which is equipped with an intelligent sensing and analysis module. By using intelligent detection sensors arranged on the tank body, such as intelligent temperature sensors, intelligent pressure sensors and intelligent concentration sensors, the system collects data on the temperature, pressure and concentration of different areas inside the tank, thereby analyzing the mixing of raw materials in different areas inside the tank, and then adjusting the stirring intensity inside the tank to improve the mixing of raw materials inside the tank. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the mixing tank in this invention; Figure 2 This is a cross-sectional view of the tank body of the present invention from the front view direction; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a top-view sectional view of the tank body of the present invention; Figure 5 yes Figure 4 A magnified view of a section at point B in the middle; Figure 6 This is a perspective view of the separation plate in this invention.

[0019] In the diagram: Tank 1, Top Cover 11, Shielding Plate 12, Connecting Channel 121, Interception Net 122, Turbulence Ring 123, Protective Membrane 124, Turbulence Protrusion 125, Impact Hole 126, Permeation Hole 127, Liquid Outlet Hole 128, Shielding Cover 13, Guide Channel 131, Guide Plate 132, Gathering Gap 14, Closing Ring 141, Guide Zone 142, Liquid Inlet Zone 143, Liquid Outlet Zone 144, Drain Hole 145, Separator Block 15, Separation Plate 16, Installation Channel 161, Guide Plate 162, Agitator 2, Rotating Shaft 21, Guide Blade 22, Drainage Channel 221, Lifting Blade 23. Detailed Implementation

[0020] 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.

[0021] Example 1: As shown in the attached diagram of the instruction manual. Figures 1-6 As shown, a mixing tank includes a main module, an intelligent sensing and analysis module, and a mixing execution module. The main module includes a tank body 1, a top cover 11 is provided on the top of the tank body 1, a feed inlet is provided on the top cover 11, and a support frame and a discharge outlet are provided at the bottom of the tank body 1. The intelligent sensing and analysis module includes intelligent monitoring sensors and a PLC intelligent control system. The intelligent monitoring sensors are distributed in different positions inside the tank 1 to sense the mixing of raw materials inside the tank 1 and feed the monitored data back to the PLC intelligent control system to control the start of the agitator 2 deployed inside the tank 1 in the stirring execution module. A shielding plate 12 is provided at the bottom of the tank body 1. A gap is maintained between the edge of the shielding plate 12 and the inner wall of the tank body 1. A connecting groove 121 is provided in the middle of the lower surface of the shielding plate 12. An intercepting net 122 is provided at the bottom opening of the connecting groove 121. The shielding plate 12 is connected to the propulsion device at the bottom of the tank body 1. The propulsion device can be an existing electric telescopic device.

[0022] Specific workflow: In the chemical production process, the process of mixing and stirring multiple chemical raw materials to form new chemical raw materials is crucial. The uniformity of mixing between the chemical raw materials directly affects the quality of the final chemical product. When the chemical raw materials to be mixed contain different solid and liquid states, it is necessary to ensure that the solid raw materials are fully dissolved and mixed into the liquid raw materials. However, in actual use, processing personnel have found that during the dissolution and mixing process, the solid raw materials tend to aggregate and settle, easily adhering to the bottom of the mixing container and even clumping, making it difficult to fully mix into the liquid raw materials. At the same time, during the stirring process, due to centrifugal force, some undissolved solid parts continue to contact and adhere to the inner surface of the container side wall. The raw materials adhering to the inner surface of the container not only reduce the proportion of the original solid raw materials, resulting in unstable quality of the new raw materials, but also increase the workload of subsequent cleaning due to the adhering substances on the inner wall of the stirring vessel. Therefore, this application is equipped with an intelligent sensing and analysis module, which uses intelligent detection sensors arranged on the tank 1, such as intelligent temperature sensors, intelligent pressure sensors and intelligent concentration sensors, to collect data on the temperature, pressure and concentration of different areas inside the tank 1, thereby analyzing the mixing of raw materials in different areas inside the tank 1, and then adjusting the stirring intensity inside the tank 1 to improve the mixing of raw materials inside the tank 1. Specifically, when it is detected that there is an accumulation of solid raw material in the area near the bottom of the tank 1, and the concentration is significantly higher than that in other areas on the upper side of the tank 1, it indicates that there is uneven mixing. Based on the above problem, the PLC intelligent control system first starts the power of the stirrer 2 according to the predetermined program to enhance the mixing intensity of the raw material inside the tank 1. Secondly, a shielding plate 12 is installed on the bottom of the tank 1, which replaces the original contact between the bottom inner wall of the tank 1 and the raw material inside the tank 1. Due to gravity, the undissolved solid parts fall onto the shielding plate 12. Compared with the fixed bottom inner wall of the tank 1, the movable shielding plate 12 makes it easier for the raw material adhering to the surface to fall off, and it is not easy to form adhesion and clumps on the bottom inner wall of the tank 1. Furthermore, by activating the propulsion device connected to the bottom shielding plate 12, the shielding plate 12 can be made to reciprocate vertically. When the shielding plate 12 is pushed upward, the solid raw material that has settled and accumulated on the upper surface of the shielding plate 12 moves, vibrates, and rises upward, mixing into the downward flowing liquid raw material, accelerating downward through the gap between the shielding plate 12 and the inner wall of the tank 1, and entering the lower area of ​​the shielding plate 12 with the space expanded. As the shielding plate 12 moves down and resets, the liquid raw material in the lower gap area is squeezed and the pressure increases. A portion of it penetrates the intercepting net 122 and flows into the flow channel. It then flows out from the top opening of the flow channel and impacts the raw material that is still adhering to the upper surface of the shielding plate 12, accelerating the peeling off of the adhering solid raw material and causing it to decompose under repeated impacts, thus accelerating its dissolution into the liquid raw material. On the other hand, the raw material entering the lower area of ​​the shielding plate 12 vibrates violently under high pressure, causing the solid part to decompose and dissolve into the liquid part at an accelerated rate. Then it flows upward through the gap between the shielding plate 12 and the inner wall of the tank 1, accelerating its upward flow along the inner wall surface of the tank 1. This creates repeated vertical impacts in the inner wall area of ​​the tank 1, which helps to reduce the adhesion and accumulation of solid raw material on the inner wall surface of the tank 1 and ensures the full mixing of solid and liquid raw materials inside the tank 1.

[0023] Example 2: Based on Embodiment 1, a shielding cover 13 is provided on the inner wall of the tank 1. The shielding cover 13 has a ring structure around the agitator 2 in the middle, and the area between the outer surface of the shielding cover 13 and the inner wall of the tank 1 is a gathering gap 14. A sealing ring 141 is provided on the inner wall of the tank 1 at the bottom of the gathering gap 14. A guide groove 131 is provided on the inner wall of the shielding cover 13 near the top. The edge of the shielding plate 12 slides in contact with the bottom inner surface of the shielding cover 13. The sealing ring 141 contacts the bottom of the shielding cover 13, so that the bottom opening of the gathering gap 14 is blocked by the sealing ring 141, so that the raw material entering the gathering gap 14 can only flow into the bottom area of ​​the shielding plate 12 through the drain hole 145 provided on the sealing ring 141. A guide plate 132 is provided on the inner wall of the shielding cover 13 on one side of the guide groove 131. The guide plate 132 is inclined. Specific workflow: Based on the specific workflow in Example 1, the top of the annular shield 13 is connected to the top of the tank 1 by a fixing bolt or similar fastener. This allows the inner wall of the tank 1 to be shielded by the easily removable and replaceable shield 13, reducing the contact between the solid components in the raw material and the inner wall surface of the tank 1 during the flow process, and reducing the adhesion of raw material to the inner wall of the tank 1 and the wear on the inner wall of the tank 1, thereby improving the service life of the tank 1. Furthermore, as the stirrer 2 agitates, the raw material located in the area surrounded by the shield 13 inside the tank 1 flows around the center in a ring. During this process, the undissolved solid portion of the raw material is deflected outward and approaches the inner surface of the shield 13 under centrifugal force. When this part of the solid raw material flows along the inner surface of the shield 13, it is intercepted and guided by the guide plate 132 and directly enters the gathering gap 14 area outside the shield 13. In this way, the part of the raw material with a large amount of undissolved solid components and a high concentration can be recovered into the gathering gap 14 area. Subsequently, when the shield 12 moves vertically, the negative pressure causes the raw material in the gathering gap 14 to accelerate through the drain hole 145 and flow into the lower area of ​​the shield 12. Then, under the downward squeezing action of the shield 12, it is decomposed and diluted into the liquid raw material until it can penetrate the interception net 122 and flow upward into the tank 1. In this way, by recovering the larger concentration in the upper part of the tank 1, and then using the impact of the vertical reciprocating movement of the shielding plate 12 and the water pressure change, the solid part is accelerated to decompose, dilute and dissolve under concentrated impact to the point that it can penetrate the interception net 122. This promotes the insoluble solid components to flow into the raw material and eliminates the uneven concentration in the areas near the bottom and near the side wall, making the raw material concentration in different parts of the tank 1 more uniform.

[0024] Example 3: Based on Embodiment 2, partition blocks 15 are uniformly arranged on the inner wall of the tank 1. The partition blocks 15 are located inside the aggregation gap 14 and are distributed in a ring around the central axis of the tank 1. The separator 15 has a tapered cross section and divides the gathering gap 14 into multiple flow guiding areas 142. The flow guiding areas 142 extend vertically downward and communicate with the lower area of ​​the shielding plate 12. A separation plate 16 is provided inside the flow guide zone 142. The separation plate 16 is a filter plate structure. One end of the separation plate 16 is rotatably connected to the outer surface of the shield 13, and a torsion spring is provided at the rotatable connection part. The other end is in contact with the inner wall of the tank 1. The separation plate 16 divides the interior of the guide zone 142 into an inlet zone 143 and an outlet zone 144. The inlet zone 143 communicates with the guide channel 131. The bottom of the outlet zone 144 communicates with the bottom gap area of ​​the shielding plate 12 through the drain hole 145. A locking block is provided on the inner wall of the tank body 1 at the location corresponding to the inlet zone 143. The locking block contacts the end of the separation plate 16.

[0025] A mounting groove 161 is provided on the side of the separation plate 16 near the liquid inlet area 143. A guide plate 162 is slidably embedded in the mounting groove 161. The guide plate 162 is a whole plate non-mesh structure that covers the filter plate structure on the inner wall of the mounting groove 161. One end of the guide plate 162 is rotatably connected to the inner wall of the mounting groove 161. A torsion spring is provided at the rotatable connection part. Specific workflow: Based on the specific workflow in Example 2, the annular aggregation gap 14 region is divided into multiple vertically downward extending guide zones 142 by uniformly arranged partition blocks 15. This causes some raw materials with higher concentrations to enter the aggregation gap 14 along the guide channel 131 and be restricted by the guide zones 142, so that they can only flow vertically. This increases the vertical impact on the inner wall of the guide zone 142 and reduces the possibility of the raw materials with higher concentrations adhering to the wall surface during continuous annular flow along the inner wall surface of the aggregation gap 14. Furthermore, to more fully recover the concentrated raw materials and guide them towards the lower area of ​​the shielding plate 12, allowing them to decompose under the impact of the vertical reciprocating movement of the shielding plate 12 and accelerate their dissolution into the liquid raw materials, a separation plate 16 is provided in the middle of the guide zone 142. The middle part of the separation plate 16 corresponding to the mounting groove 161 has a mesh structure. As the shielding plate 12 moves upward, the negative pressure causes the raw materials in the outlet zone 144 to flow downward rapidly into the lower area of ​​the shielding plate 12. At this time, in conjunction with the action of the stirrer 2, the raw materials are further dispersed inside the tank 1. The raw material near the liquid surface flows into the inlet zone 143 at an accelerated speed and impacts the guide plate 162 on the front of the separation plate 16. At this time, the separation plate 16 rotates and opens under the combined action of negative pressure suction and the impact of the flowing raw material, so that the flowing raw material can pass smoothly through the gap area between the separation plates 16 and flow into the outlet zone 144 at an accelerated speed. Then it flows to the drain hole 145, so that the raw material with a high concentration and a lot of undissolved solid components is concentrated in the area under the shielding plate 12, which makes it easier for the shielding plate 12 to impact and stir to accelerate its dissolution. When the shielding plate 12 moves downward, causing the lower area to tend to flow back towards the liquid inlet area 143, the end of the separating plate 16 rotates to the position where it engages with the locking block under the action of the torsion spring. At this time, the liquid inlet area 143 and the liquid outlet area 144 are separated. The liquid part of the impacted raw material penetrates the middle mesh part and enters the mounting groove 161, causing the guide plate 162 to rotate and open the mounting groove 161. The liquid part flows out smoothly, reducing the impact on the overall separating plate 16. The undissolved solid components are intercepted and restricted in the liquid outlet area 144 and cannot pass through the separating plate 16 smoothly. They are continuously impacted during the subsequent reciprocating movement of the shielding plate 12. By continuing the above process, a large part of the undissolved solid components in the area near the liquid surface inside the tank 1 can be concentrated to the lower side of the shielding plate 12. Then, the reciprocating impact of the shielding plate 12 can fully decompose and refine them and dissolve them into the liquid raw material. This improves the dissolution efficiency of the solid raw material and thus improves the overall stirring treatment effect of the raw material.

[0026] Example 4: Based on Embodiment 3, the stirrer 2 of this application can be any existing conventional stirring device that can be used inside a mixing tank. Any device that can stir the raw materials in the area surrounded by the shield 13 to make them rotate in a ring and mix them thoroughly can be used in this application. This embodiment proposes a specific implementation scheme for the stirrer 2. Specifically, the stirrer 2 includes a rotating shaft 21 installed in the middle part of the tank body 1. The upper end of the rotating shaft 21 is connected to the output end of the drive device on the upper side of the top cover 11. The drive device includes a rotating motor, reducer, coupling and other structures conventionally configured for existing mixing tanks, which drive the rotating shaft 21 to rotate at the center position of the tank body 1. The lower side of the rotating shaft 21 is slidably connected to the shield 12. A guide vane 22 is provided on the side wall of the rotating shaft 21 at the location corresponding to the guide channel 131. The guide vane 22 is vertically arranged and extends vertically as a whole. A guide channel 221 is provided on its surface to guide the contacting raw material to flow into the guide channel 131. A lifting vane 23 is provided on the side wall of the rotating shaft 21 at the location below the guide vane 22. The lifting vane 23 is inclined to guide the contacting raw material to flow vertically upward. Specific workflow: Based on the specific workflow in Example 3, the guide vanes 22 on the rotating shaft 21 and the guide grooves 131 on the shield 13 are at the same vertical height, corresponding to the area of ​​the raw material near the upper side and the liquid surface inside the tank 1. The guide vanes 22 are straight plates and are vertically set. As the guide vanes 22 rotate, they push the contacting raw material to flow laterally to the outside. They also help guide the contacting raw material to flow along the guide grooves 221 on the guide vanes 22 into the guide grooves 131 on the shield 13. This causes the part of the raw material with a higher concentration near the upper side inside the tank 1 to accelerate and converge into the guide area 142, and then be guided to the lower side of the shield 12 for concentrated and efficient stirring. The lifting blades 23 located on the rotating shaft 21 near the shielding plate 12 are inclined, which helps to guide the raw materials on the lower side to flow upward and carry away the raw materials adhering to the upper surface of the shielding plate 12. The edge of the shielding plate 12 protrudes upward and slides to connect with the outer surface of the shielding cover 13, forming a bowl-shaped structure. When the shielding plate 12 moves upward to the position corresponding to the lifting blades 23, the lifting blades 23 are in the area surrounded by the shielding plate 12. The stirring effect generated by the rotation in the area is restricted by the enclosure, thus concentrating the action on the upper surface of the shielding plate 12. This helps to decompose the solid parts that settle down on the upper side of the shielding plate 12 under the concentrated impact, and accelerates the peeling off of the raw materials adhering to the upper surface of the shielding plate 12 under the stirring action, mixing them into the liquid part on the upper side, thus achieving full stirring and mixing of the raw materials inside the tank 1.

[0027] Example 5: Based on Embodiment 4, a turbulence ring 123 is uniformly arranged on the upper arc-shaped surface of the shielding plate 12. The turbulence ring 123 has a triangular cross section and extends circumferentially around the central pivot 21. The upper surface of the shielding plate 12 is covered with a protective film 124. The protective film 124 is made of elastic material and is selected from the type that does not react with the components of the raw materials being processed. Furthermore, the temperature heated during the stirring of the raw materials will not damage the protective film 124. The annular protective film 124 is fixed to the middle protrusion of the shielding plate 12 only in the inner ring, the outer ring is fixed to the upper surface of the shielding plate 12 near the outer ring, and the middle part maintains a contact gap with the upper surface of the shielding plate 12. The part of the protective membrane 124 that contacts the turbulence ring 123 is lifted up, so that an annular turbulence protrusion 125 is formed on the upper surface of the protective membrane 124; an impact hole 126 is provided on the outer surface of the middle protrusion of the shielding plate 12, and the opening of the impact hole 126 points towards the direction close to the turbulence protrusion 125; the interception net 122 extends to cover the bottom surface of the shielding plate 12, and a penetration hole 127 is provided on the shielding plate 12 at the part corresponding to the turbulence ring 123. The bottom of the penetration hole 127 communicates with the gap between the interception net 122 and the shielding plate 12, and the top opening of the penetration hole 127 is located on the conical end of the turbulence ring 123; Liquid outlet holes 128 are uniformly arranged in the area between adjacent turbulence protrusions 125 on the protective membrane 124, and the gap between the liquid outlet holes 128 and the upper surface of the protective membrane 124 and the shielding plate 12 is connected. Specific workflow: Based on the specific workflow in Example 4, the upper arc-shaped surface of the shielding plate 12 is provided with multiple rings of turbulence 123 from the inside to the outside, and is covered with a protective film 124. This allows the downward-sinking refractory solid raw material to adhere to the protective film 124 instead of directly adhering to the upper surface of the shielding plate 12. Only the inner and outer rings of the annular protective film 124 are fixed to the upper surface of the shielding plate 12, while other parts maintain a contact gap. As the shielding plate 12 moves up and down, the raw material impact flow released from the impact hole 126 flows laterally along the upper surface of the shielding plate 12. The evenly distributed annular turbulence protrusions 125 are disturbed under the action of the impact flow, causing the protective film 124 to vibrate and deform relative to the shielding plate 12, accelerating the removal of the raw material adhering to the upper surface. Furthermore, as the shielding plate 12 moves downward, some liquid raw materials penetrate the interception net 122 and enter the permeation hole 127, directly impacting the turbulence protrusion 125. Subsequently, they flow laterally along the gap between the protective membrane 124 and the shielding plate 12, increasing the gap area. The protective membrane 124 expands and deforms outward, causing the liquid outlet, which was originally attached to the upper surface of the shielding plate 12, to detach upward from the shielding plate 12 and release the raw materials in the gap area. In this way, the liquid impact vibration acts from the inside to the outside on the surface of the protective membrane 124. Combined with the deformation of the protective membrane 124, the adhesion between the solid raw materials and the surface of the shielding plate 12 is eliminated, and the sticky solid raw materials are accelerated to peel off from the upper surface of the shielding plate 12. This reduces the adhesion of raw materials, increases the yield of raw materials obtained from the stirring process, and reduces the workload of subsequent cleaning of the inside of the tank 1.

[0028] Example 6: Based on the above embodiments, an intelligent control system for a mixing tank is provided. The intelligent control system is used to control the automatic operation of the mixing tank, and includes: The data acquisition unit includes the intelligent monitoring sensor deployed inside the tank 1 in the above embodiment, which can collect the mixing and temperature of the raw materials inside the tank 1. The data analysis and control unit is used to receive the collected data, perform data calculations using the PLC intelligent control system, and adjust the start-up and power of each component in a timely manner. The execution unit includes the stirring execution module in the above embodiment, which is used to execute the control commands issued by the PLC intelligent control system and to stir the raw materials inside the tank 1. The human-machine interaction unit includes the display interface and control interface of the PLC intelligent control system body located around the tank 1, which facilitates manual intervention by processing personnel and allows for flexible adjustments to the entire processing process; The data storage unit, including local storage and cloud storage platform, generates and stores work logs of collected data and executed instructions. At the same time, it backs up and uploads the work logs to the cloud storage platform to ensure the security of data storage and to facilitate the analysis of problems in the future. The safety interlock unit includes monitoring devices deployed on electrical equipment such as motors and propulsion equipment in the aforementioned mixing and processing workshop, such as leakage current alarms, overvoltage leakage alarms, and smoke alarms. In case of abnormalities during processing, an alarm signal can be issued immediately and fed back to the PLC intelligent control system to promptly shut down the processing components and activate the fire safety system, thereby reducing the risk of accidents escalating and ensuring a safe production environment.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing tank, comprising a main body module, an intelligent sensing and analysis module, and a mixing execution module, characterized in that: The main module includes a tank (1), a top cover (11) is provided on the top of the tank (1), a feed inlet is provided on the top cover (11), and a support frame and a discharge outlet are provided at the bottom of the tank (1). The intelligent sensing and analysis module includes intelligent monitoring sensors and PLC intelligent control system. The intelligent monitoring sensors are distributed in different positions inside the tank (1) to sense the mixing of raw materials inside the tank (1) and feed the monitored data back to the PLC intelligent control system to control the start of the stirrer (2) deployed inside the tank (1) in the stirring execution module. A shielding plate (12) is provided at the bottom of the tank (1). The edge of the shielding plate (12) is kept at a gap with the inner wall of the tank (1). A connecting groove (121) is provided in the middle of the lower surface of the shielding plate (12). An intercepting net (122) is provided at the bottom opening of the connecting groove (121). The shielding plate (12) is connected to the propulsion device at the bottom of the tank (1).

2. A mixing tank according to claim 1, characterized in that: A shield (13) is provided on the inner wall of the tank (1). The shield (13) forms a ring structure around the agitator (2) in the middle. The area between the outer surface of the shield (13) and the inner wall of the tank (1) is a gathering gap (14). A closing ring (141) is provided on the inner wall of the tank (1) at the bottom of the gathering gap (14). A guide groove (131) is provided on the inner wall of the shield (13) near the top. The edge of the shield plate (12) slides in contact with the bottom inner surface of the shield (13). The gathering gap (14) is connected to the bottom area of ​​the shield plate (12) through the drain hole (145) provided on the closing ring (141).

3. A mixing tank according to claim 2, characterized in that: A guide plate (132) is provided on the inner wall of the shield (13) on one side of the guide channel (131), and the guide plate (132) is inclined.

4. A mixing tank according to claim 3, characterized in that: The inner wall of the tank (1) is uniformly provided with partition blocks (15), which are located inside the aggregation gap (14) and are distributed in a ring around the central axis of the tank (1); The separator (15) has a tapered cross section and divides the gathering gap (14) into multiple flow guiding areas (142). The flow guiding areas (142) extend vertically downward and communicate with the lower area of ​​the shielding plate (12).

5. A mixing tank according to claim 4, characterized in that: A separation plate (16) is provided inside the flow guide area (142). The separation plate (16) is a filter plate structure. One end of the separation plate (16) is rotatably connected to the outer surface of the shield (13), and a torsion spring is provided at the rotatable connection. The other end is in contact with the inner wall of the tank (1). The separation plate (16) divides the interior of the guide zone (142) into an inlet zone (143) and an outlet zone (144). The inlet zone (143) is connected to the guide channel (131). The bottom of the outlet zone (144) is connected to the bottom gap area of ​​the shielding plate (12) through the drain hole (145). The inner wall of the tank (1) is provided with a locking block at the part corresponding to the inlet zone (143). The locking block is in contact with the end of the separation plate (16).

6. A mixing tank according to claim 5, characterized in that: A mounting groove (161) is provided on the side of the separation plate (16) near the liquid inlet area (143). A guide plate (162) is slidably embedded in the mounting groove (161), and one end of the guide plate (162) is rotatably connected to the inner wall of the mounting groove (161). A torsion spring is provided at the rotatable connection part.

7. A mixing tank according to claim 6, characterized in that: The agitator (2) includes a rotating shaft (21) installed in the middle of the tank (1). The upper end of the rotating shaft (21) is connected to the output end of the drive device on the upper side of the top cover (11), and the lower side of the rotating shaft (21) is slidably connected to the shielding plate (12). A guide vane (22) is provided on the side wall of the rotating shaft (21) corresponding to the guide groove (131). The guide vane (22) is installed vertically and has a guide groove (221) on its surface to guide the contacting raw material to flow into the guide groove (131). A lifting vane (23) is provided on the side wall of the rotating shaft (21) below the guide vane (22). The lifting vane (23) is inclined to guide the contacting raw material to flow vertically upward.

8. A mixing tank according to claim 7, characterized in that: A turbulence ring (123) is uniformly arranged on the upper arc surface of the shielding plate (12). The turbulence ring (123) has a triangular cross section and extends in a ring around the central pivot (21). The upper surface of the shielding plate (12) is covered with a protective film (124). The protective film (124) is made of elastic material, and the part of the protective film (124) that contacts the turbulence ring (123) is lifted up, so that an annular turbulence protrusion (125) is formed on the upper surface of the protective film (124). An impact hole (126) is provided on the outer surface of the middle protrusion of the shielding plate (12). The opening of the impact hole (126) points towards the direction close to the turbulence protrusion (125).

9. A mixing tank according to claim 8, characterized in that: The intercepting net (122) extends to cover the bottom surface of the shielding plate (12), and the shielding plate (12) is provided with a permeation hole (127) at the part corresponding to the turbulence ring (123). The bottom of the permeation hole (127) is connected to the gap between the intercepting net (122) and the shielding plate (12), and the top opening of the permeation hole (127) is located on the conical end of the turbulence ring (123). Liquid outlet holes (128) are uniformly arranged in the area between adjacent turbulence protrusions (125) on the protective membrane (124), and the liquid outlet holes (128) are connected to the upper surface of the protective membrane (124) and the shielding plate (12).

10. An intelligent control system for a mixing tank, the intelligent control system being used to control the automatic operation of the mixing tank according to any one of claims 1-9, characterized in that: The intelligent control system includes a data acquisition unit, a data analysis and control unit, an execution unit, a human-machine interaction unit, a data storage unit, and a safety interlock unit.

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