A two-stage thickening reactor

Abstract

The utility model discloses a two -stage thickening reation kettle, including kettle body, filter inner tube, first thickening mechanism and second thickening mechanism, kettle body is equipped with feed pipe and a plurality of discharge pipe, filter inner tube sets up inside the kettle body, and the wall is set up with filter hole, and the inside of filter inner tube forms first thickening chamber, and forms second thickening chamber between kettle body, feed pipe communicates with first thickening chamber, and discharge pipe communicates with first thickening chamber and second thickening chamber all, first thickening mechanism sets up in first thickening chamber, is used to carry out thickening treatment to the material of first thickening chamber, second thickening mechanism sets up in second thickening chamber, is used to carry out thickening treatment to the material of second thickening chamber, the two -stage thickening reation kettle provided by the utility model can realize the dynamic thickening treatment to slurry, and the thickening efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a two-stage concentration reactor. Background Technology

[0002] In the preparation of ternary precursors for lithium-ion battery cathode materials, solid-liquid separation and washing are key processes affecting product purity, particle morphology, and production efficiency. Traditional thickeners mainly rely on the natural settling of materials in large tanks when treating waste liquid generated during the production of ternary precursors. The underflow is collected and discharged by a rake, and the overflow is clarified liquid.

[0003] Patent CN220405591U discloses a ternary precursor reaction device, which includes a reactor, a transfer vessel, a thickener, and a supporting piping system. The core of the device lies in receiving the overflow slurry from the reactor through the transfer vessel and then sending it to a separate thickener for concentration. The underflow from the thickener is returned to the reactor through a reflux pipe to control the reaction environment, while the supernatant is discharged. This design aims to improve the sphericity of the precursor particles by setting different operating states and coordinating supplementary feeding.

[0004] However, in the face of the large amount of slurry generated during the production of ternary precursors, the existing independently set thickeners have limited processing capacity due to their single-stage and static separation method, making it difficult to quickly bring the slurry to the required underflow concentration and clear liquor clarity, resulting in low production efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a two-stage thickening reactor to solve the technical problems of limited processing capacity of thickeners and difficulty in quickly bringing slurry to the required process level in the existing technology.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a two-stage thickening reactor, including a reactor body, a filter inner cylinder, a first thickening mechanism, and a second thickening mechanism. The reactor body is equipped with a feed pipe and several discharge pipes. The filter inner cylinder is disposed inside the reactor body, and filter holes are formed on its peripheral wall. The interior of the filter inner cylinder forms a first thickening chamber, and a second thickening chamber is formed between the filter inner cylinder and the reactor body. The feed pipe communicates with the first thickening chamber, and the discharge pipes communicate with both the first thickening chamber and the second thickening chamber. The first thickening mechanism is disposed in the first thickening chamber and is used to thicken the material in the first thickening chamber. The second thickening mechanism is disposed in the second thickening chamber and is used to thicken the material in the second thickening chamber.

[0007] In some embodiments, the first thickening mechanism and the second thickening mechanism are respectively provided with a first thickening hole and a second thickening hole, the diameter of the first thickening hole is greater than or equal to the diameter of the second thickening hole, and the diameter of the filter hole is greater than the diameter of the second thickening hole.

[0008] In some embodiments, the first thickening mechanism includes a thickening element and a first thickening drive element. The thickening element is disposed in the first thickening cavity and has a first thickening surface covering the cross-sectional area of ​​the first thickening cavity. The drive end of the first thickening drive element is connected to the thickening element and can drive the thickening element to reciprocate within the first thickening cavity to thicken the material in the first thickening cavity.

[0009] In some embodiments, the thickening element includes a central rod and helical blades. The central rod is coaxially disposed inside the filter inner cylinder, and the helical blades extend helically along the axial direction of the central rod, with the first thickening holes uniformly formed on their helical surfaces.

[0010] In some embodiments, the second thickening mechanism includes a thickening plate and a second thickening drive member. The thickening plate has a second thickening hole and is slidably disposed in the second thickening cavity. It has a second thickening surface covering the cross-sectional area of ​​the second thickening cavity. The drive end of the second thickening drive member is connected to the thickening plate and is used to drive the thickening plate to reciprocate within the second thickening cavity to perform secondary thickening on the material in the second thickening cavity.

[0011] In some embodiments, the second thickening chamber is divided vertically by the second thickening mechanism to form a thickening zone and a clear water zone that are respectively connected to the discharge pipe. The discharge pipe includes a clear water pipe and two discharge pipes. The clear water pipe is connected to the clear water zone, and the two discharge pipes are respectively connected to the bottom end of the thickening zone and the first thickening chamber.

[0012] In some embodiments, the second density drive is a cylinder or a hydraulic cylinder.

[0013] In some embodiments, the second thickening drive includes a drive screw and a transmission component. The drive screw is rotatably disposed inside the vessel body, with one end threadedly connected to the thickening plate. The transmission component connects the drive screw and the first thickening mechanism to transmit the power of the first thickening mechanism to the drive screw, thereby driving the drive screw to rotate and causing the thickening plate to reciprocate.

[0014] In some embodiments, the filter inner cylinder is coaxially and vertically disposed inside the vessel body, and the second thickening drive component is sleeved on the outside of the filter inner cylinder.

[0015] In some embodiments, the two-stage thickening reactor further includes a flow guide shroud fitted over the top of the outer side of the filter inner cylinder. The top of the flow guide shroud is sealed to the filter inner cylinder, and the bottom forms a discharge outlet between the shroud and the side wall of the filter inner cylinder. The moving path of the thickening end of the second thickening mechanism is located above the discharge outlet.

[0016] Compared with existing technologies, the two-stage thickening reactor provided by this invention performs preliminary filtration of the slurry entering the reactor body through the inner filter cylinder. This traps most solid particles in the first thickening chamber, while the clearer liquid passes through the filter holes into the second thickening chamber. The first and second thickening mechanisms can further thicken the materials in the first and second thickening chambers, respectively, thereby achieving dynamic thickening of the materials. Simultaneously, the mechanical action of the first thickening mechanism also promotes the filtration of the filtrate inside the inner filter cylinder through the filter holes, actively promoting solid-liquid separation, enabling the slurry to quickly reach the required underflow concentration, and effectively improving the clarity of the clear liquid. This significantly improves thickening efficiency and reduces the equipment footprint. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the two-stage thickening reactor provided in this embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of the second thickening drive component of the two-stage thickening reactor provided in this embodiment of the present invention, which is a cylinder. Figure 3 This is a cross-sectional structural diagram of the second thickening drive component of the two-stage thickening reactor provided in this embodiment of the utility model, which is a transmission structure. Figure 4 This is a schematic diagram of the thickening component of the two-stage thickening reactor provided in this embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Kettle body; 11. Feed pipe; 12. Discharge pipe; 121. Clean water pipe; 122. Discharge pipe; 2. Inner filter cylinder; 201. First thickening chamber; 202. Second thickening chamber; 21. Filter holes; 3. First thickening mechanism; 301. First thickening orifice; 31. Thickening component; 311. Central rod; 312. Spiral blade; 32. First thickening drive component; 321. Motor; 322. Pulley; 323. Conveyor belt; 4. Second thickening mechanism; 401. Second thickening orifice; 41. Thickening plate; 42. Second thickening drive component; 421. Cylinder; 422. Drive screw; 423. Transmission belt; 424. Transmission wheel; 5. Radiator shield. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] To address the technical problem of limited processing capacity of thickeners and difficulty in quickly bringing slurry to the required process level, this invention provides a two-stage thickening reactor that enables dynamic thickening of slurry and significantly improves thickening efficiency.

[0021] Please see Figures 1 to 3 The two-stage thickening reactor includes a reactor body 1, a filter inner cylinder 2, a first thickening mechanism 3, and a second thickening mechanism 4. The reactor body 1 is equipped with a feed pipe 11 and several discharge pipes 12. The filter inner cylinder 2 is located inside the reactor body 1, and filter holes 21 are opened on its peripheral wall. The interior of the filter inner cylinder 2 forms a first thickening chamber 201, and a second thickening chamber 202 is formed between the filter inner cylinder 2 and the reactor body 1. The feed pipe 11 is connected to the first thickening chamber 201, and the discharge pipes 12 are connected to both the first thickening chamber 201 and the second thickening chamber 202. The first thickening mechanism 3 is located in the first thickening chamber 201 and is used to thicken the material in the first thickening chamber 201. The second thickening mechanism 4 is located in the second thickening chamber 202 and is used to thicken the material in the second thickening chamber 202.

[0022] In this scheme, the slurry entering the reactor 1 is rapidly screened and guided through the inner filter cylinder 2, achieving preliminary solid-phase separation. A first thickening mechanism 3 is installed in the first thickening chamber 201, applying mechanical action to the pre-separated slurry to thicken it within the inner filter cylinder 2, while actively promoting solid-liquid separation, thus ensuring the material is thickened to the concentration required by the process. A second thickening mechanism 4 is installed in the second thickening chamber 202, further thickening the slurry within the second thickening chamber 202 to remove fine particles, improve the quality of the supernatant, and ultimately achieve efficient, two-stage concentration of the slurry.

[0023] Please see Figures 1 to 4 In some preferred embodiments, the first thickening mechanism 3 and the second thickening mechanism 4 are respectively provided with a first thickening orifice 301 and a second thickening orifice 401. The diameter of the first thickening orifice 301 is greater than or equal to the diameter of the second thickening orifice 401, while the diameter of the filter orifice 21 is greater than the diameter of the second thickening orifice 401. This gradient design of pore size is beneficial for achieving staged filtration and improving separation efficiency.

[0024] For efficient separation, please refer to [link / reference]. Figure 1In some possible embodiments, the first thickening mechanism 3 includes a thickening element 31 and a first thickening drive element 32 that drives its movement. The thickening element 31 has a first thickening surface capable of covering the cross-sectional area of ​​the first thickening cavity 201, such as a reciprocating plate structure or other form. The drive end of the first thickening drive element 32 is connected to the thickening element 31 and can drive the thickening element 31 to reciprocate within the first thickening cavity 201 to squeeze and filter the slurry. Through the mechanical action of the first thickening mechanism 3, not only can the slurry inside the filter inner cylinder 2 be thickened, but the filtrate inside the filter inner cylinder 2 can also be filtered through the filter holes 21, actively promoting solid-liquid separation and enabling the slurry to quickly reach the underflow concentration required by the process.

[0025] Please see Figures 1 to 4 In some preferred embodiments, the first thickening mechanism 3 can take the form of a spiral thickening structure. The thickening element 31 includes a central rod 311 and spiral blades 312. The central rod 311 is coaxially disposed inside the filter inner cylinder, and the spiral blades 312 extend spirally along the axial direction of the central rod 311, with first thickening holes 301 uniformly opened on their spiral surfaces. The first thickening drive element 32 is used to drive the spiral blades 312 to reciprocate, and includes a motor 321, two pulleys 322, and a conveyor belt 323. The motor 321 is fixedly disposed outside the vessel body 1, and the two pulleys 322 are respectively connected to the output shaft of the motor 321 and one end of the central rod 311 of the thickening element 31. The conveyor belt 323 is sleeved on the two pulleys 322. When the motor 321 is started, the spiral blades 312 can be driven to reciprocate through the transmission of the pulleys 322 and the conveyor belt 323. During rotation, the spiral blade 312 can, on the one hand, use its spiral structure to stir and transport the slurry in the first thickening chamber 201, ensuring thorough mixing and flow within the chamber, which is beneficial for thickening. On the other hand, the first thickening hole 301 on the spiral blade 312 can further filter and thicken the slurry, causing solid particles to gradually aggregate under the pushing and filtering action of the spiral blade 312, while the liquid phase flows out through the first thickening hole 301 and the filter hole 21, thereby achieving efficient solid-liquid separation and slurry thickening. Furthermore, when the slurry concentration in the filter inner cylinder 2 reaches the required level, the operating mode of the motor 321 can be adjusted to continuously drive the central rod 311 to rotate in one direction via the pulley 322 and conveyor belt 323. Utilizing the conveying action of the spiral blade 312, the thickened slurry is continuously discharged from one end of the first thickening chamber 201 to the discharge pipe 12, achieving continuous discharge and improving production efficiency.

[0026] Please see Figures 1 to 3In some possible embodiments, the second thickening mechanism 4 includes a thickening plate 41 and a second thickening drive 42. The thickening plate 41 is annularly arranged and disposed outside the filter inner cylinder 2. The thickening plate 41 has a second thickening hole 401 and is slidably disposed within the second thickening cavity 202. It has a second thickening surface covering the cross-sectional area of ​​the second thickening cavity 202, ensuring that all materials in the second thickening cavity 202 can be fully squeezed and filtered. The drive end of the second thickening drive 42 is connected to the thickening plate 41 and is used to drive the thickening plate 41 to reciprocate up and down within the second thickening cavity 202. During the reciprocating motion of the thickening plate 41, its second thickening surface continuously squeezes the materials in the second thickening cavity 202. Because the thickening plate 41 has a second thickening hole 401, the liquid phase can flow out through these holes, while the solid particles are trapped between the thickening plate 41 and the filter inner cylinder 2, and are further squeezed and concentrated.

[0027] Please see Figure 1 and Figure 2 In some possible embodiments, the second thickening drive 42 can be a drive mechanism such as a cylinder 421 or a hydraulic cylinder, with two components symmetrically arranged on both sides of the filter inner cylinder 2. During operation, the piston rod of the cylinder 421 or hydraulic cylinder extends and retracts, driving the thickening plate 41 to move stably up and down within the second thickening chamber 202. During the downward movement of the thickening plate 41, pressure is applied to the slurry within the second thickening chamber 202, causing the liquid phase in the slurry to flow out through the second thickening hole 401, while the solid particles are retained above the thickening plate 41, achieving secondary thickening treatment and further improving the density of the slurry.

[0028] Please see Figure 1 and Figure 3 In some other possible embodiments, the second thickening drive 42 adopts a transmission structure combining a drive screw 422 and a transmission component. The drive screw 422 is rotatably disposed inside the vessel body 1, with one end threadedly connected to the thickening plate 41. The transmission component includes a transmission belt 423 and a transmission wheel 424. Transmission wheels 424 are provided on the top of the drive screw 422 and on the central rod 311 of the thickening component 31. Multiple transmission wheels 424 are connected by the transmission belt 423. When the drive device drives one of the transmission wheels 424 to rotate, it can drive another transmission wheel 424 and the drive screw 422 to rotate synchronously through the transmission belt 423. Since the thickening plate 41 is threadedly connected to the drive screw 422, under the action of the threaded pair, the thickening plate 41 will reciprocate up and down along the axial direction of the drive screw 422, ensuring that the thickening plate 41 performs stable and reliable reciprocating motion in the second thickening cavity 202, thereby achieving effective thickening treatment of the slurry in the second thickening cavity 202.

[0029] Of course, in other possible embodiments, the specific form of the second thickening mechanism 4 is not limited to this, and other efficient and stable structural forms can also be adopted. For example, the second thickening mechanism 4 can be designed to include multiple parallel-arranged extrusion plates and corresponding driving devices. These extrusion plates are arranged vertically in the second thickening cavity 202, with gaps between adjacent extrusion plates for slurry to pass through, and second thickening holes 401 are evenly distributed on each extrusion plate. The driving device can be an electric push rod or a crank-connecting rod mechanism, etc., which drives the extrusion plates to perform relative reciprocating extrusion motion to repeatedly extrude the slurry located in the gaps.

[0030] Please see Figures 1 to 3 In terms of specific arrangement, the filter inner cylinder 2 in this scheme is coaxially and vertically set inside the vessel body 1. The second thickening chamber 202 is divided into a thickening zone and a clear water zone by thickening plate 41. The discharge pipe 12 includes a clear water pipe 121 and two discharge pipes 122. The clear water pipe 121 is connected to the clear water zone, and the two discharge pipes 122 are connected to the bottom of the thickening zone and the first thickening chamber 201, respectively. This design allows clear water to be smoothly discharged from the clear water zone through the clear water pipe 121, ensuring that the quality of the supernatant reaches a high standard. The thickened slurry can be discharged from the bottom of the thickening zone and the first thickening chamber 201 through the two discharge pipes 122, realizing efficient solid-liquid separation and classified discharge of slurries of different concentrations.

[0031] Please see Figures 1 to 3 To further optimize equipment performance, in some possible embodiments, a flow guide hood 5 is also included, fitted onto the top of the outer side of the inner filter cylinder 2. The top of the flow guide hood 5 is sealed to the inner filter cylinder 2, and the bottom forms a discharge outlet between it and the side wall of the inner filter cylinder. The flow guide hood 5 effectively guides the slurry filtered by the inner filter cylinder 2 into the second thickening chamber 202. The thickening plate 41 is slidably fitted onto the outer side of the flow guide hood 5, and its movement path is located above the discharge outlet. When the thickening plate 41 moves up and down, it will not obstruct the discharge outlet. At the same time, it can isolate the clear water zone, ensuring that the flow guide hood 5 guides the slurry filtered by the inner filter cylinder 2 to flow accurately to the thickening zone, preventing the slurry from entering the clear water zone without sufficient thickening treatment, thus ensuring the thickening effect and the quality of the supernatant.

[0032] To better understand this utility model, the following is combined with... Figures 1 to 4The technical solution of this utility model is described in detail as follows: During thickening, the slurry first enters the first thickening chamber 201 through the feed pipe 11. Inside the first thickening chamber 201, the thickening drive unit drives the central rod 311 and the spiral blade 312 to rotate reciprocally. The spiral blade 312 uses its spiral structure to stir and transport the slurry, allowing the slurry to be fully mixed and flowed within the first thickening chamber 201. During this process, the first thickening hole 301 on the spiral blade 312 performs preliminary filtration and thickening of the slurry. Solid particles gradually aggregate under the pushing and filtering action of the spiral blade 312, while the liquid phase flows out through the first thickening hole 301 and the filter hole 21, entering the second thickening chamber 202. When the concentration of the slurry in the filter inner cylinder 2 reaches the required level, the working mode of the motor 321 can be adjusted so that it continuously drives the central rod 311 to rotate in one direction through the pulley 322 and the conveyor belt 323. The spiral blades 312 are used to continuously discharge the thickened slurry from one end of the first thickening chamber 201 to the discharge pipe 122 connected to the bottom end of the first thickening chamber 201.

[0033] The slurry entering the second thickening chamber 202 undergoes secondary thickening under the action of the thickening plate 41. The piston rod of the cylinder 421 or the oil cylinder moves back and forth, causing the thickening plate 41 to move steadily up and down in the second thickening chamber 202, so that the liquid phase in the slurry flows out to the clear water zone through the second thickening hole 401. The thickened slurry remains in the thickening zone and is discharged through the clear water pipe 121 and the discharge pipe 122 respectively.

[0034] This invention comprises a vessel body 1, a filter inner cylinder 2, a first thickening mechanism 3, and a second thickening mechanism 4. The filter inner cylinder 2 performs preliminary filtration on the slurry entering the vessel body 1, trapping most solid particles in the first thickening chamber 201, while the clearer liquid passes through the filter holes 21 into the second thickening chamber 202. The first thickening mechanism 3 and the second thickening mechanism 4 further thicken the materials in the first and second thickening chambers 201 and 202 respectively, achieving dynamic thickening. Simultaneously, the mechanical action of the first thickening mechanism 3 promotes the filtration of the filtrate inside the filter inner cylinder 2 through the filter holes 21, actively promoting solid-liquid separation and enabling the slurry to quickly reach the required underflow concentration. This effectively improves the clarity of the clear liquid, significantly enhancing thickening efficiency and reducing equipment footprint.

[0035] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A two-stage concentration reactor, characterized in that, include: The vessel body is equipped with a feed pipe and several discharge pipes; A filter inner cylinder is disposed inside the vessel body, and filter holes are provided on its peripheral wall. The interior of the filter inner cylinder forms a first dense cavity, and a second dense cavity is formed between the filter inner cylinder and the vessel body. The feed pipe is connected to the first dense cavity, and the discharge pipe is connected to both the first dense cavity and the second dense cavity. A first thickening mechanism is disposed in the first thickening chamber and is used to thicken the material in the first thickening chamber. as well as The second thickening mechanism is disposed in the second thickening chamber and is used to thicken the material in the second thickening chamber.

2. The two-stage thickening reactor according to claim 1, characterized in that, The first thickening mechanism and the second thickening mechanism are respectively provided with a first thickening hole and a second thickening hole. The diameter of the first thickening hole is greater than or equal to the diameter of the second thickening hole, and the diameter of the filter hole is greater than the diameter of the second thickening hole.

3. The two-stage thickening reactor according to claim 2, characterized in that, The first thickening mechanism includes a thickening component and a first thickening drive component. The thickening component is disposed in the first thickening cavity and has a first thickening surface covering the cross-sectional area of ​​the first thickening cavity. The drive end of the first thickening drive component is connected to the thickening component and can drive the thickening component to reciprocate within the first thickening cavity to thicken the material in the first thickening cavity.

4. The two-stage thickening reactor according to claim 3, characterized in that, The thickening component includes a central rod and spiral blades. The central rod is coaxially disposed inside the filter inner cylinder, and the spiral blades extend spirally along the axial direction of the central rod, with the first thickening holes uniformly formed on their spiral surfaces.

5. The two-stage thickening reactor according to claim 2, characterized in that, The second thickening mechanism includes a thickening plate and a second thickening drive. The thickening plate has a second thickening hole and is slidably disposed in the second thickening cavity. It has a second thickening surface covering the cross-sectional area of ​​the second thickening cavity. The drive end of the second thickening drive is connected to the thickening plate and is used to drive the thickening plate to reciprocate within the second thickening cavity to perform secondary thickening on the material in the second thickening cavity.

6. The two-stage thickening reactor according to claim 1 or 5, characterized in that, The second thickening chamber is divided into a thickening zone and a clear water zone by the second thickening mechanism. The discharge pipe includes a clear water pipe and two discharge pipes. The clear water pipe is connected to the clear water zone, and the two discharge pipes are connected to the bottom of the thickening zone and the bottom of the first thickening chamber, respectively.

7. The two-stage thickening reactor according to claim 5, characterized in that, The second dense driving component is a cylinder or a hydraulic cylinder.

8. The two-stage thickening reactor according to claim 5, characterized in that, The second thickening drive includes a drive screw and a transmission component. The drive screw is rotatably disposed inside the vessel body, with one end threadedly connected to the thickening plate. The transmission component connects the drive screw and the first thickening mechanism to transmit the power of the first thickening mechanism to the drive screw, thereby driving the drive screw to rotate and causing the thickening plate to reciprocate.

9. The two-stage thickening reactor according to claim 5, characterized in that, The filter inner cylinder is coaxially and vertically arranged inside the reactor body, and the second thickening drive component is sleeved on the outside of the filter inner cylinder.

10. The two-stage thickening reactor according to claim 1, characterized in that, It also includes a flow guide cover fitted on the top of the outer side of the filter inner cylinder. The top of the flow guide cover is sealed to the filter inner cylinder, and the bottom forms a discharge outlet between the filter inner cylinder and the side wall of the filter inner cylinder. The moving path of the thickening end of the second thickening mechanism is located above the discharge outlet.

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