Crystallization device and control method thereof

Abstract

The invention discloses a crystallization device and a control method thereof, and relates to the technical field of desulfurizing towers, the crystallization device comprises a main body, the main body is provided with a containing cavity, an inverted-cone-shaped flow guide base, a liquid inlet and a liquid outlet, a flow guide assembly is arranged between the liquid inlet and the liquid outlet, the flow guide assembly comprises a guide piece and an arc-shaped flow guide piece, and the arc-shaped flow guide piece is provided with a flow guide face; the arc-shaped flow guide part is further provided with at least one guide channel and a mounting hole, the guide part is arranged in the mounting hole and comprises a connecting section and a flow guide section, the flow guide section is provided with a guide hole communicated with the mounting hole, the guide part is further provided with a flow guide hole, and the flow guide hole is used for guiding slurry to the position above the flow guide assembly. The guide channel is used for guiding the slurry to enter the drainage hole through the guide hole. The invention provides a crystallization device and a control method thereof, and aims to solve the technical problems that an existing crystallization device is low in slurry sedimentation efficiency and particles are easily wrapped to a liquid outlet.

Description

Technical Field

[0001] This application belongs to the field of desulfurization tower technology, specifically relating to a crystallization device and its control method. Background Technology

[0002] In the existing technology, the concentrated slurry from the desulfurization tower enters the crystallization device through the slurry inlet. The crystallization device has an inlet at the bottom and an outlet at the top. The slurry continuously flows into the crystallization device from the inlet. As the crystallization device rises, the slurry settles, allowing the clear liquid to flow out from the outlet at the top. Therefore, during the rising process, solid particles (such as desulfurization by-product crystals) need to overcome the resistance of the rising slurry flow to complete the settling. Not only is the settling time short, but they are also easily carried by the rising slurry to the upper clear liquid zone, resulting in insufficient purity of the clear liquid and low crystal recovery rate.

[0003] A current technology describes a crystallization apparatus comprising an inverted conical base at the bottom, with a liquid inlet located above the base. A guide member is positioned above the liquid inlet, including a guide hole and a support shaft at the center of the guide hole. The guide member also has an outlet. When the slurry enters the crystallization apparatus through the inlet, it rotates and gradually rises under the guidance of the inverted conical base. Guided by the guide member, the rotating slurry is directed to the outlet. The rotation utilizes centrifugal force to improve the sedimentation efficiency of the slurry. Under the guidance of the guide member, the slurry rotates and flows out of the inlet. During the slurry's ascent, the slurry near the inner wall of the apparatus experiences stronger centrifugal force due to its larger radius of rotation, allowing solid particles to quickly aggregate and settle towards the wall. However, the slurry near the central support shaft rotates slowly and experiences weaker centrifugal force, making it difficult to effectively separate many fine crystals. These fine crystals are still carried along with the rising liquid flow to the outlet, causing some unsettled fine crystals to flow out with the clear liquid. Summary of the Invention

[0004] This application provides a crystallization apparatus and its control method to solve the technical problems of low slurry settling efficiency and easy entrainment of particles to the outlet in existing crystallization apparatuses.

[0005] The primary objective of this application is to provide a crystallization apparatus. The technical solution adopted is as follows: It includes a main body, which has a cavity for containing slurry. An inverted conical guide seat is located at the bottom of the main body. An inlet is located above the inverted conical guide seat and on the side wall corresponding to the main body. An outlet is located at the top of the main body. A flow guiding assembly is located between the inlet and outlet. The flow guiding assembly includes a guide member and an arc-shaped guide member protruding towards the inverted conical guide seat. The arc-shaped guide member has a guide surface for guiding the rotation of the slurry. The arc-shaped guide member also has at least one guide channel, which protrudes from the guide surface. An installation hole is located at the center of the arc-shaped guide member. The guide channel guides the slurry into the installation hole. The guide member is located in the installation hole and includes a connecting section connected to the installation hole and a drainage section spaced apart from the hole wall of the installation hole. The drainage section has a guide hole communicating with the installation hole. The guide member also has a drainage hole for guiding the slurry above the flow guiding assembly, so that the slurry settles above the flow guiding assembly. The guide channel guides the slurry through the guide hole into the drainage hole.

[0006] The crystallization apparatus in the first objective of this application also includes the following additional technical features: The flow guiding assembly also includes a settling plate disposed above the arc-shaped flow guide, the settling plate having positioning holes that cooperate with the guide.

[0007] The guide also includes a positioning section that mates with the positioning hole, the positioning section being connected to the drainage section, and the positioning section being at least partially exposed above the positioning hole.

[0008] The positioning section has a flow stabilizing component inside the drainage hole. The flow stabilizing component includes multiple flow guides distributed in a grid pattern. The two ends of the flow guides are connected to the hole wall of the drainage hole, and the multiple flow guides together form multiple flow stabilizing channels extending along the axial direction of the drainage hole.

[0009] The drainage hole of the drainage section is equipped with a drainage element that is covered with a guide hole, and the drainage element extends toward the flow stabilizer.

[0010] The flow guiding assembly also includes an adjustment element for adjusting the flow rate of slurry through the guide channel.

[0011] The adjusting component includes an arc-shaped blocking component, the curvature of which is adapted to the inner contour of the guide channel. The arc-shaped blocking component is movably disposed in the guide channel and has a blocking state and a guiding state. In the blocking state, the arc-shaped blocking component at least partially blocks the guide channel. In the guiding state, the arc-shaped blocking component disengages from blocking the guide channel to fully expose the guide channel.

[0012] The main body has a liquid inlet pipe on its side wall, and the liquid inlet is located at the end of the liquid inlet pipe. The axis of the liquid inlet is tangent to the outer circumferential surface of the inverted conical base.

[0013] The inverted conical base is equipped with a guide plate with spiral guide protrusions, and the bottom of the inverted conical base is equipped with a discharge port.

[0014] The second objective of this application is to provide a control method for a crystallization apparatus, applied to the crystallization apparatus described in the first objective. The flow guiding assembly further includes an adjusting member for adjusting the slurry flow rate through the guiding channel. The control method includes: The turbidity of the slurry in the containment cavity is detected, and the turbidity value is obtained; Compare the turbidity detection value with a preset threshold; Adjust the working state of the regulating component based on the comparison results: If the turbidity detection value is less than or equal to the preset threshold, the control regulator increases the slurry flow rate through the guide channel; If the turbidity detection value is greater than the preset threshold, the control adjustment component reduces the flow rate of slurry through the guide channel.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application utilizes an inverted conical backflow base and an arc-shaped guide to guide the slurry along a fixed path, reducing disordered flow in the central region of the containment cavity, increasing the rotation intensity in the central region, and facilitating the movement of fine crystals towards the wall. Simultaneously, the combination of the inverted conical guide and the arc-shaped guide creates a dual flow guide, reducing the probability of flow field turbulence during slight flow fluctuations. By setting a guide channel, during the rotation of the slurry guided by the arc-shaped guide, some liquid enters the gap between the guide section and the mounting hole through the guide channel. Within this gap, the rotation speed gradually decreases, and the liquid enters the guide hole through the guide hole, merging with the slurry rotating and rising in the lower central region. The merged slurry is then guided to the top of the guide assembly through the guide port, allowing for further settling between the guide assembly and the outlet, thus improving the slurry settling efficiency.

[0016] 2. In a preferred embodiment of this application, the positioning hole and the guide member are designed to provide dual axial and radial support for the guide member, preventing it from shifting or vibrating under the long-term rotating impact of the slurry. Simultaneously, the settling plate isolates the rotating flow field below from the static settling zone above, preventing the eddies generated by the rotation below from affecting the stable settling of the slurry above.

[0017] 3. In a preferred embodiment of this application, the exposed positioning section can form a guiding protrusion above the settling plate, which disperses and guides the slurry flowing out of the drainage hole. When the slurry flows out of the drainage hole, it will first contact the surface of the exposed positioning section, which can evenly spread the slurry in all directions, avoiding the slurry from concentrating and impacting a certain area to form local turbulence. At the same time, the exposed positioning section can also drive the surrounding slurry to flow slowly, so that fine particles are more evenly distributed in the settling area, prolonging their settling path and further reducing the concentration of solid particles in the clear liquid.

[0018] 4. In a preferred embodiment of this application, a flow guide is provided to guide the fine crystals in the slurry in a directional manner. Since the flow guide forms multiple stabilizing channels extending axially along the drainage orifice, when the slurry carrying crystals flows through these channels, the flow guide contacts the slurry, further reducing the slurry's rotational tendency and allowing it to rise smoothly. For crystals with slightly larger diameters, they can collide with the flow guide and slide down the inner wall of the channel back to the lower rotation zone to settle again. For crystals with smaller diameters, under the constraint of the stabilizing channels, they enter the upper static settling zone at a uniform speed, preventing some crystals from rapidly exiting the orifice and missing the settling time due to uneven flow velocity.

[0019] Furthermore, by setting a guide hole on the guide member, the diffuse flow of slurry flowing out of the guide hole is transformed into a concentrated flow flowing along the inner wall of the guide member, thus preventing the slurry from spreading randomly to the inner wall of the guide hole. The structure of the guide member extending towards the flow stabilizer can directly guide the slurry to the inlet of the flow stabilizer channel, so that the slurry flow velocity smoothly transitions from the outlet of the guide hole to the inlet of the flow stabilizer channel, realizing a seamless connection of slurry flow between the guide hole and the flow stabilizer, and eliminating turbulence interference in the transition stage.

[0020] 5. As a preferred embodiment of this application, by setting an adjusting component, the crystallization device can be adapted to slurries of different turbidities. For example, when processing high-turbidity liquids, the adjusting component actively reduces the flow rate ratio of the guide channel to reduce the amount of high-concentration slurry entering the upper region, so that the slurry, in conjunction with the enhanced bottom centrifugal separation of the inverted conical guide seat, allows large particles to settle quickly on the base. When processing low-concentration liquids, the adjusting component increases the flow rate ratio of the guide channel. By increasing the flow rate, the rotation force and flow speed of the slurry in the arc-shaped guide are enhanced. Combined with the extended settling time of the settling plate, even if the particle concentration in the liquid is very low, the purity of the clear liquid can be maintained at a high level without consuming more energy, thereby achieving efficient separation of low-concentration liquids.

[0021] Furthermore, the arc-shaped shielding component can switch between shielding / guiding states by rotating. In the shielding state, the partial coverage of the guiding channel can naturally reduce the flow area and decrease the amount of slurry passing through. When switching to the guiding state, the shielding component, which is completely detached from the coverage, adapts to the inner contour of the guiding channel to form a continuous and smooth guiding surface, avoiding additional resistance to the flow of slurry.

[0022] 6. In a preferred embodiment of this application, the axis of the inlet is tangent to the outer circumferential surface of the inverted conical base. This allows the slurry to flow into the receiving cavity along the tangential direction of the outer circumferential surface of the base when it flows out of the inlet pipe, converting the kinetic energy of the liquid into the angular momentum of rotational motion and avoiding kinetic energy loss. The slurry forms a stable rotating flow field in the initial stage of entering the device. Guided by the curved surface of the inverted conical base, the rotational intensity gradually increases with the upward movement, causing solid particles to move rapidly towards the wall under centrifugal force, thus improving the sedimentation efficiency of the slurry.

[0023] 7. In a preferred embodiment of this application, a spiral-shaped guide protrusion is provided to coordinate with the tangential liquid inlet: as the slurry rotates and rises along the outer circumference of the base, the guide protrusion generates a spiral thrust on the liquid, causing the rotational speed to gradually increase with the rising height, thereby improving the sedimentation efficiency of the slurry. A discharge port is provided at the bottom of the inverted conical base, facilitating the removal of settled particles by the user.

[0024] 6. In the control method of this application, by detecting the turbidity of the slurry in the containment chamber, the dynamic changes in the concentration of solid particles in the liquid can be captured in real time, so that the flow rate adjustment is always around the optimal separation efficiency: when the turbidity is low, the flow rate is increased to maintain a reasonable rotation intensity; when the turbidity is high, the flow rate is reduced to reduce unnecessary power consumption, and at the same time, the separation center of gravity is placed in the bottom area, and the strong centrifugal force of the inverted conical base is used to efficiently process high-concentration particles. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a crystallization apparatus according to one embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of a crystallization apparatus according to one embodiment of this application; Figure 3 for Figure 1 Enlarged view of part A in the middle; Figure 4 This is a schematic flowchart of a control method for a crystallization apparatus according to one embodiment of this application.

[0026] List of components and reference numerals: 1. Main body; 11. Receiving cavity; 12. Liquid inlet; 13. Liquid outlet; 14. Liquid inlet pipe; 2. Inverted conical guide seat; 21. Guide plate; 22. Discharge port; 3. Flow guiding components; 31. Arc-shaped flow guide; 311. Flow guiding surface; 312. Mounting hole; 313. Guide channel; 32. Guide component; 321. Connecting section; 322. Flow diversion section; 323. Guide hole; 324. Flow diversion hole; 325. Positioning section; 33. Settling plate; 34. Flow stabilizing component; 341. Flow guiding component; 35. Flow diversion component; 36. Adjusting component; 361. Arc-shaped shielding component. Detailed Implementation

[0027] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0029] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] like Figure 1 , Figure 2 , Figure 3 As shown, a crystallization apparatus includes a main body 1, which has a receiving cavity 11 for containing slurry. An inverted conical guide seat 2 is provided at the bottom of the main body 1. An inlet 12 is provided above the inverted conical guide seat 2, corresponding to the side wall of the main body 1. An outlet 13 is also provided at the upper part of the main body 1. A flow guiding assembly 3 is provided between the inlet 12 and the outlet 13. The flow guiding assembly 3 includes a guide member 32 and an arc-shaped guide member 31 protruding towards the inverted conical guide seat 2. The arc-shaped guide member 31 has a guide surface 311 for guiding the rotation of the slurry. The arc-shaped guide member 31 also has at least one guide channel 313, which protrudes from the guide surface 311. The arc-shaped guide member 31 has a mounting hole 312 at its center. The guide channel 313 guides the slurry into the mounting hole 312. The guide member 32 is disposed in the mounting hole 312. The guide member 32 includes a connecting section 321 connected to the mounting hole 312 and a diversion section 322 spaced apart from the hole wall of the mounting hole 312. The diversion section 322 has a guide hole 323 communicating with the mounting hole 312. The guide member 32 also has a diversion hole 324. The diversion hole 324 is used to guide the slurry to the top of the guide assembly 3 so that the slurry settles above the guide assembly 3. The guide channel 313 guides the slurry through the guide hole 323 into the diversion hole 324.

[0031] This application utilizes an inverted conical backflow base and an arc-shaped guide 31 to guide the slurry to rotate along a fixed path, reducing disordered flow of the slurry in the central region of the receiving cavity 11, increasing the rotation intensity in the central region, and facilitating the movement of fine crystals towards the wall. Simultaneously, the cooperation between the inverted conical guide 2 and the arc-shaped guide 31 forms a dual flow guide, reducing the probability of flow field turbulence during slight flow fluctuations. By providing a guide channel 313, during the rotation of the slurry guided by the arc-shaped guide 32, some liquid enters the gap between the guide section 322 and the mounting hole 312 through the guide channel 313. Within this gap, the rotation speed gradually decreases, and the liquid enters the guide hole 324 through the guide hole 323, merging with the slurry rotating and rising in the lower central region. The merged slurry is guided to the top of the guide assembly 3 through the guide port, allowing the slurry to further settle between the guide assembly 3 and the outlet 13, improving the slurry settling efficiency.

[0032] As one of the preferred embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 As shown, the flow guiding assembly 3 also includes a settling plate 33 disposed above the arc-shaped flow guiding member 31, and the settling plate 33 is provided with a positioning hole (not shown in the figure) that cooperates with the guide member 32.

[0033] By setting positioning holes and cooperating with guide 32, the guide 32 can be provided with dual axial and radial fixed support, preventing the guide 32 from shifting or vibrating under long-term rotating impact of slurry. At the same time, the settling plate 33 can also isolate the mutual interference between the rotating flow field below and the static settling zone above, preventing the eddies generated by the rotation below from affecting the stable settling of the slurry above.

[0034] As a preferred embodiment of the implementation method, the following is an example: Figure 1 , Figure 2 , Figure 3 As shown, the guide 32 also includes a positioning section 325 that mates with the positioning hole. The positioning section 325 is connected to the drainage section 322, and the positioning section 325 is at least partially exposed outside the positioning hole.

[0035] The exposed positioning section 325, with its portion above the positioning hole, forms a guiding protrusion above the settling plate 33, which disperses and guides the slurry flowing from the drainage hole 324. When the slurry flows out of the drainage hole 324, it first contacts the surface of the exposed positioning section 325, which then evenly diffuses the slurry in all directions, preventing it from concentrating and impacting a specific area, thus avoiding localized turbulence. Simultaneously, the exposed positioning section 325 also slows down the flow of surrounding slurry, resulting in a more even distribution of fine particles in the settling zone, extending their settling path, and further reducing the concentration of solid particles in the clarified liquid.

[0036] Furthermore, the flow stabilizing element 34 is provided in the flow hole 324 of the positioning section 325. The flow stabilizing element 34 includes multiple flow guides 341 distributed in a grid pattern. The two ends of the flow guides 341 are respectively connected to the hole wall of the flow hole 324. The multiple flow guides 341 together form multiple flow stabilizing channels extending along the axial direction of the flow hole 324.

[0037] By setting the flow guide 341, the fine crystals in the slurry are guided in a directional manner. Since the flow guide 341 forms multiple stable flow channels extending axially along the inlet 324, when the slurry carrying crystals flows through the stable flow channels, the flow guide 341 comes into contact with the slurry, which can further reduce the rotation tendency of the slurry and allow the slurry to rise steadily. For crystals with slightly larger particle sizes, they can collide with the flow guide 341 and slide down along the inner wall of the channel back to the lower rotation zone to settle again; for crystals with smaller particle sizes, under the constraint of the stable flow channels, they enter the upper static settling zone at a uniform speed, avoiding some crystals from rushing out of the orifice and missing the settling time due to uneven flow velocity.

[0038] Preferably, the flow-draining section 322 has a flow-draining member 35 inside the flow-draining hole 324 that covers the guide hole 323, and the flow-draining member 35 extends toward the flow-stabilizing member 34. The flow-draining member 35 includes a buffer section extending radially along the flow-draining hole 324 and an extension section connected to the buffer section and extending toward the flow-stabilizing member 34.

[0039] By setting the guide hole 323 to cover the flow guide 35, the diffuse flow of slurry from the guide hole 323 is transformed into a concentrated flow along the inner wall of the guide 35, preventing the slurry from spreading randomly to the inner wall of the flow guide 324. The structure of the guide 35 extending toward the flow stabilizer 34 can directly guide the slurry to the inlet of the flow stabilizer channel of the flow stabilizer 34, so that the slurry flow velocity smoothly transitions from the outlet of the guide hole 323 to the inlet of the flow stabilizer channel, realizing the seamless connection of slurry flow between the guide hole 323 and the flow stabilizer 34, and eliminating turbulence interference in the transition stage.

[0040] As a preferred embodiment of this application, such as Figure 1 , Figure 2 , Figure 3 As shown, the flow guiding assembly 3 also includes an adjusting member 36, which is used to adjust the flow rate of slurry through the guiding channel 313.

[0041] By setting the regulating component 36, the crystallization device can be adapted to slurries of different turbidities. When processing high-turbidity liquids, the regulating component 36 actively reduces the flow rate of the guide channel 313 to reduce the amount of high-concentration slurry entering the upper region, allowing the slurry to cooperate with the enhanced bottom centrifugal separation of the inverted conical guide seat 2, so that large particles can settle quickly on the base. When processing low-concentration liquids, the regulating component 36 increases the flow rate of the guide channel 313. By increasing the flow rate, the rotation force and flow speed of the slurry in the arc-shaped guide component 31 are enhanced. Combined with the extended settling time of the settling plate 33, even if the particle concentration in the liquid is very low, the purity of the clear liquid can be maintained at a high level without consuming more energy, thereby achieving efficient separation of low-concentration liquids.

[0042] As a preferred embodiment of implementation method two: such as Figure 1 , Figure 2 , Figure 3 As shown, the adjusting member 36 includes an arc-shaped blocking member 361. The arc of the arc-shaped blocking member 361 is adapted to the inner contour of the guide channel 313. The arc-shaped blocking member 361 is movably disposed in the guide channel 313. The arc-shaped blocking member 361 has a blocking state and a guiding state. In the blocking state, the arc-shaped blocking member 361 at least partially blocks the guide channel 313. In the guiding state, the arc-shaped blocking member 361 disengages from blocking the guide channel 313 to fully expose the guide channel 313.

[0043] The arc-shaped shield 361 can switch between shielding and guiding states by rotation. In the shielding state, the partial coverage of the guide channel 313 can naturally reduce the flow area and reduce the amount of slurry passing through. When switching to the guiding state, the shield that is completely detached from the coverage adapts to the inner contour of the guide channel 313 to form a continuous and smooth guiding surface, avoiding additional resistance to the flow of slurry.

[0044] Preferably, the arc-shaped blocking member 361 is disposed at one end of the guide channel 313 opposite to the guide hole 323. The adjusting member 36 is provided with a telescopic member for driving the arc-shaped blocking member 361, and the guide channel 313 is provided with a guide groove for guiding the movement of the arc-shaped blocking member 361.

[0045] Those skilled in the art will understand that the arc-shaped shield 361 can also be rotatably disposed on the guide channel 313, or the arc-shaped shield 361 can be disposed as a valve, etc.

[0046] As a preferred embodiment of this application, such as Figure 1 , Figure 2 , Figure 3As shown, the side wall of the main body 1 is provided with a liquid inlet pipe 14, and a liquid inlet 12 is located at the end of the liquid inlet pipe 14. The axis of the liquid inlet 12 is tangent to the outer peripheral surface of the inverted conical base. The tangency of the axis of the liquid inlet 12 to the outer peripheral surface of the inverted conical base allows the slurry to flow into the receiving cavity 11 along the tangential direction of the outer peripheral surface of the base when it flows out of the liquid inlet pipe 14, converting the kinetic energy of the liquid into the angular momentum of rotational motion and avoiding kinetic energy loss. The slurry forms a stable rotating flow field in the initial stage of entering the device. With the guidance of the curved surface of the inverted conical base, the rotation intensity gradually increases with the upward process, causing the solid particles to move rapidly towards the wall under the action of centrifugal force, thereby improving the sedimentation efficiency of the slurry.

[0047] Furthermore, the liquid inlet pipe 14 is rotatably mounted on the main body 1 to adjust the angle between the liquid inlet 12 and the tangent of the outer peripheral surface of the inverted conical base.

[0048] In this application, the particle removal method can be any of the following embodiments: Implementation Method Four: (e.g.) Figure 1 , Figure 2 , Figure 3 As shown, the inverted conical base is equipped with a guide plate 21, on which a spiral guide protrusion is provided. The bottom of the inverted conical base has a discharge port 22. The spiral guide protrusion, in conjunction with the tangential liquid inlet 12, works synergistically: as the slurry rotates and rises along the outer circumference of the base, the guide protrusion generates a spiral thrust on the liquid, causing the rotational speed to gradually increase with the rising height, thus improving the sedimentation efficiency of the slurry. The discharge port 22 at the bottom of the inverted conical base facilitates the removal of settled particles by the user.

[0049] Implementation Method 5: The attached drawings for this Implementation Method 5 are not shown. The inverted conical base is detachably installed in the receiving cavity.

[0050] This application discloses a control method for a crystallization apparatus, applicable to the crystallization apparatus disclosed in this application, such as... Figure 1 , Figure 2 , Figure 3 As shown, the flow guiding assembly 3 also includes an adjusting member 36, which is used to adjust the flow rate of slurry through the guiding channel 313, such as... Figure 4 As shown, the control methods include: The turbidity of the slurry in the containment cavity is detected, and the turbidity detection value is obtained. The turbidity data of the slurry in the containment cavity is collected in real time by a turbidity sensor (such as a scattered light sensor or a transmitted light sensor), and the quantified turbidity detection value is output. Compare the turbidity detection value with a preset threshold; Adjust the working state of the regulating component based on the comparison results: If the turbidity detection value is less than or equal to the preset threshold, the control regulator increases the slurry flow rate through the guide channel; If the turbidity detection value is greater than the preset threshold, the control adjustment component reduces the flow rate of slurry through the guide channel.

[0051] By detecting the turbidity of the slurry in the containment chamber, the dynamic changes in the concentration of solid particles in the liquid can be captured in real time, so that the flow rate adjustment is always focused on the optimal separation efficiency: when the turbidity is low, the flow rate is increased to maintain a reasonable rotation intensity; when the turbidity is high, the flow rate is reduced to reduce unnecessary power consumption, while the separation center of gravity is placed in the bottom area, and the strong centrifugal force of the inverted conical base is used to efficiently process high-concentration particles.

[0052] This application installs a turbidity sensor below the flow guide assembly in the middle region of the containment cavity. The sensor probe directly contacts the slurry and detects the intensity of scattered light from solid particles in the liquid in real time through the principle of optical scattering. The light is converted into an electrical signal and transmitted to the control system. The preset turbidity threshold can be manually adjusted or automatically selected according to the type of slurry. This application does not limit the choice of a preset threshold.

[0053] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0054] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0055] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A crystallization apparatus, characterized in that, The device includes a main body with a cavity for receiving slurry. An inverted conical guide seat is located at the bottom of the main body. An inlet is located above the inverted conical guide seat, corresponding to the side wall of the main body. An outlet is also located at the top of the main body. A flow guiding assembly is provided between the inlet and the outlet. The flow guiding assembly includes a guide member and an arc-shaped guide member protruding towards the inverted conical guide seat. The arc-shaped guide member has a guide surface for guiding the rotation of the slurry. The arc-shaped guide member also has at least one guide channel, which protrudes from the guide surface. The arc-shaped guide member has a central mounting hole. The guide channel guides the slurry into the mounting hole. The guide member is disposed in the mounting hole. The guide member includes a connecting section connected to the mounting hole and a drainage section spaced apart from the hole wall of the mounting hole. The drainage section has a guide hole communicating with the mounting hole. The guide member also has a drainage hole. The drainage hole is used to guide the slurry above the guide member so that the slurry settles above the guide member. The guide channel guides the slurry through the guide hole into the drainage hole.

2. The crystallization apparatus according to claim 1, characterized in that, The flow guiding assembly also includes a settling plate disposed above the arc-shaped flow guiding member, the settling plate having positioning holes that cooperate with the guide member.

3. A crystallization apparatus according to claim 2, characterized in that, The guide also includes a positioning section that mates with the positioning hole, the positioning section being connected to the drainage section, and the positioning section at least partially exposing the positioning hole.

4. A crystallization apparatus according to claim 3, characterized in that, The positioning section has a flow stabilizing component inside the drainage hole. The flow stabilizing component includes multiple flow guides distributed in a grid pattern. The two ends of the flow guides are respectively connected to the hole wall of the drainage hole. The multiple flow guides together form multiple flow stabilizing channels extending along the axial direction of the drainage hole.

5. A crystallization apparatus according to claim 4, characterized in that, The drainage hole of the drainage section is provided with a drainage element that covers the guide hole, and the drainage element extends toward the flow stabilizer.

6. A crystallization apparatus according to claim 1, characterized in that, The flow guiding assembly also includes an adjusting element for adjusting the flow rate of slurry through the guiding channel.

7. A crystallization apparatus according to claim 6, characterized in that, The adjusting component includes an arc-shaped blocking component, the curvature of which is adapted to the inner contour of the guide channel. The arc-shaped blocking component is movably disposed in the guide channel. The arc-shaped blocking component has a blocking state and a guiding state. In the blocking state, the arc-shaped blocking component at least partially blocks the guide channel. In the guiding state, the arc-shaped blocking component disengages from blocking the guide channel to fully expose the guide channel.

8. A crystallization apparatus according to claim 1, characterized in that, The main body has a liquid inlet pipe on its side wall, and the liquid inlet is located at the end of the liquid inlet pipe. The axis of the liquid inlet is tangent to the outer peripheral surface of the inverted conical base.

9. A crystallization apparatus according to claim 1, characterized in that, The inverted conical base is provided with a guide plate, the guide plate has a spiral guide protrusion, and the bottom of the inverted conical base is provided with a discharge port.

10. A method for controlling a crystallization apparatus, applied to the crystallization apparatus according to any one of claims 1 to 9, characterized in that, The flow guiding assembly further includes an adjusting element for adjusting the flow rate of slurry through the guiding channel, and the control method includes: The turbidity of the slurry in the containment cavity is detected, and the turbidity detection value is obtained; The turbidity detection value is compared with a preset threshold. Adjust the working state of the adjusting component based on the comparison results: If the turbidity detection value is less than or equal to the preset threshold, the regulating element is controlled to increase the slurry flow rate through the guide channel; If the turbidity detection value is greater than the preset threshold, the regulating element is controlled to reduce the flow rate of slurry through the guide channel.

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