Reaction kettle device for synthesizing iron phosphate material

Abstract

The invention discloses a reaction kettle device for synthesis of an iron phosphate material, and particularly relates to the technical field of synthesis of battery materials, and the device comprises a kettle body, a driving motor, a transmission disc and a turbo-type paddle. A sealing cover is arranged at the top of the kettle body, a driving motor is connected with a rotating shaft, an anchor blade is arranged below the rotating shaft, and the bottom realizes turbine blade lifting and sleeve guide limiting through transmission of a piston cavity and compressed gas; and a ratchet wheel on the outer wall of the rotating shaft is meshed with a pawl in the transmission disc in a one-way mode, and intermittent wall scraping is achieved. According to the device, dead angles are broken through synergistic stirring of the double blades, the mixing uniformity and the reaction rate are improved, materials adhering to the wall are efficiently removed through intermittent wall scraping, the stable reaction environment is guaranteed through multiple sealing, the structure is flexible to adjust, maintenance is convenient and fast, efficient and high-quality synthesis of the iron phosphate material can be achieved, and the device is suitable for industrial large-scale production.

Description

Technical Field

[0001] This invention relates to the field of battery material synthesis technology, and in particular to a reaction vessel apparatus for synthesizing iron phosphate materials. Background Technology

[0002] Due to its advantages such as high specific capacity, good cycle stability, environmental friendliness, and low cost, iron phosphate has become one of the core choices for cathode materials in lithium-ion batteries and is widely used in new energy vehicles, energy storage power stations, and other fields. With the rapid development of the new energy industry, the market demand for iron phosphate continues to rise, which puts forward higher requirements for the efficiency of its synthesis process, product purity, and production economy. As the core equipment in the iron phosphate synthesis process, the stirring effect and the ability to handle wall adhesion directly affect the sufficiency of material reaction, product quality, and production efficiency. Therefore, the structural design and performance optimization of the reactor device have become the key to upgrading the iron phosphate synthesis process.

[0003] In existing ferric phosphate synthesis reactor technologies, the design of the stirring system has significant shortcomings. Currently, most mainstream reactors use a single type of stirring blade, such as anchor blades or turbine blades. While anchor blades can cover a large space within the reactor and promote overall material circulation, their shear force is weak, resulting in insufficient stirring intensity in the lower part of the reactor, easily creating dead zones and leading to uneven mixing of solid and liquid materials. Although turbine blades possess strong axial thrust and shear force, enhancing local material mixing, traditional turbine blades are mostly fixed installation structures, making it impossible to adjust the installation height according to changes in material viscosity during the reaction process, and thus failing to ensure effective stirring in both the upper and lower areas of the reactor.

[0004] Meanwhile, the problem of material sticking to the walls during the synthesis of ferric phosphate has long plagued the industry. Ferric phosphate synthesis is mostly carried out in acidic reaction systems, where the material concentration gradually increases and ferric phosphate crystals are easily precipitated. These materials easily adhere to the inner wall of the reactor. Existing solutions for dealing with the wall sticking problem have many shortcomings. Some reactors use fixed scrapers that continuously scrape the walls as the stirring blades rotate. Although this can remove the sticking material to a certain extent, the continuous friction between the scraper and the inner wall of the reactor causes wear-resistant parts such as rubber strips to wear out too quickly, with a service life of usually less than 300 hours. Frequent shutdowns are required for replacement, which seriously affects the continuity of production. Other reactors do not have a dedicated wall scraping mechanism, or the scraper of the wall scraping mechanism does not fit tightly to the inner wall of the reactor, resulting in poor structural adaptability. This leads to low efficiency in removing sticking material, with a large amount of material remaining on the reactor wall. This not only wastes raw materials but also causes secondary reactions or corrosion of the reactor due to long-term accumulation of residual material, shortening the service life of the equipment. In addition, some continuous wall scraping mechanisms can disrupt the stirring flow field inside the reactor during operation, leading to a decrease in the mixing stability of the material, further aggravating the problem of uneven reaction and reducing the purity of the product.

[0005] Therefore, this application proposes a reaction vessel apparatus for the synthesis of iron phosphate materials. Summary of the Invention

[0006] One objective of this invention is to provide a reactor device for the synthesis of iron phosphate materials. This invention utilizes a synergistic stirring design of anchor-type blades and liftable turbine-type blades to overcome the stirring dead zones of a single blade, significantly improving the uniformity of solid-liquid mixing and the rate of mass and heat transfer. Simultaneously, an intermittent wall scraping mechanism driven by ratchet and pawl efficiently removes materials adhering to the inner wall of the reactor, avoiding raw material waste and reactor corrosion. This solves the technical problems of low stirring efficiency, severe material adhesion to the wall, and insufficient product purity in existing reactors, ultimately achieving efficient and high-quality synthesis of iron phosphate materials. Furthermore, the device features flexible structural adjustment, reliable sealing, and convenient maintenance, making it suitable for large-scale industrial production.

[0007] A reaction vessel apparatus for synthesizing iron phosphate material according to an embodiment of the present invention includes a vessel body, a drive motor, a transmission disk, and a turbine blade; A sealing cover is installed on the top of the vessel body. The drive motor is fixedly installed on the top of the sealing cover. A rotating shaft is vertically and rotatably installed at the bottom of the sealing cover and inside the vessel body. The output shaft of the drive motor is connected to the rotating shaft via a coupling. An anchor-type blade is provided below the rotating shaft. A turbine-type blade is installed at the bottom of the rotating shaft and can be raised and lowered. Movable rods are provided at both the upper and lower ends of the turbine-type blade. A piston is fixedly installed on the top of the movable rod above the turbine-type blade. A piston chamber is opened inside the rotating shaft below, and the piston is movably installed in the piston chamber. A transmission disc is fitted above the rotating shaft, and supports are symmetrically arranged on both sides of the transmission disc. A scraper is fixedly installed on the outer side of the supports. A ratchet is fixedly installed on the outer wall of the rotating shaft and on the inner side of the transmission disc. A rotating shaft is arranged on the inner side of the transmission disc, and a pawl is movably installed on the inner side of the transmission disc through the rotating shaft. A rotary joint is installed on the top of the rotating shaft. An air supply pipe is provided at the input end of the rotary joint, and the top of the air supply pipe passes through the sealing cover. The output end of the rotary joint is connected to the piston chamber inside the rotating shaft.

[0008] Furthermore, a sleeve is centrally located below the anchor blade, and the sleeve is on the same axis as the rotating shaft. The movable rod below the turbine blade is movably inserted into the sleeve. An axial guide groove is provided on the inner wall of the sleeve, and a guide boss adapted to the guide groove is provided on the outer wall of the movable rod below the turbine blade. The guide boss slides into the guide groove to achieve radial limiting during the lifting and lowering process of the turbine blade.

[0009] Furthermore, a disk cover is detachably installed on the top of the transmission disk, the rotating shaft passes through the center of the disk cover, the disk cover is fixedly connected to the transmission disk by a bolt evenly distributed around the circumference, and a polytetrafluoroethylene wear-resistant sealing gasket is provided at the passage between the disk cover and the rotating shaft, the inner diameter of the sealing gasket is interference-fitted with the outer diameter of the rotating shaft.

[0010] Furthermore, the anchor-type blade is disposed on the inner side of the scraper, the scraper is an arc-shaped structure with the same curvature as the inner wall of the vessel, the outer wall of the scraper is provided with a rubber strip with a thickness of -mm, and the rubber strip is fixedly connected to the scraper through a T-shaped groove, and the adhesion pressure between the rubber strip on the outer wall of the scraper and the inner wall of the vessel is .-.MPa.

[0011] Furthermore, a feeding port is provided on one side of the top of the sealing cover, and a feeding port is provided on the other side of the top of the sealing cover. Both the feeding port and the feeding port are interconnected with the interior of the reactor body. The feeding port has a funnel-shaped structure, and a sealing end cap with a locking buckle is hinged to its top. An adjustable flow ball valve is installed on the feeding port.

[0012] Furthermore, a discharge port is centrally located at the bottom of the vessel body. The discharge port has a cylindrical structure with a corrosion-resistant coating on its inner wall. A pneumatic ball valve is installed on the discharge port. A uniformly distributed support leg is fixedly welded around the bottom of the vessel body. The support leg has a hollow stainless steel rod structure, and a non-slip rubber pad with a thickness of -mm is fixedly attached to the bottom of the support leg.

[0013] Furthermore, the piston has a cylindrical structure, and the outer wall of the piston has two annular sealing grooves with a spacing of -mm. An O-ring elastic sealing ring is installed in the sealing groove. The elastic sealing ring is made of fluororubber, and the outer diameter of the sealing ring is larger than the inner diameter of the piston cavity by -mm, forming an interference fit to ensure the airtightness of the piston cavity.

[0014] Furthermore, a return spring is provided at the bottom of the piston chamber. The return spring is a stainless steel compression spring. The return spring is sleeved on the outside of the movable rod above the turbine blade, and one end is fixedly abutted to the bottom of the piston through a positioning groove. The other end abuts to the positioning platform on the inner wall of the bottom of the piston chamber. When compressed gas is introduced into the piston chamber through the gas supply pipe, the gas pushes the piston to move downward against the elastic force of the return spring, causing the movable rod and the turbine blade to descend axially. When the compressed gas supply stops, the return spring pushes the piston to return to its original position, causing the turbine blade to rise.

[0015] Furthermore, an elastic clamping element is provided at the end of the pawl away from the rotating shaft. The elastic clamping element is a torsion spring, which is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the groove of the pawl, and the other end is fixedly connected to the mounting plate on the inner wall of the transmission disk. When the rotating shaft rotates clockwise, the tooth surface of the ratchet fits against the working surface of the pawl, pushing the pawl to drive the transmission disk to rotate synchronously. When the rotating shaft rotates counterclockwise, the pawl rotates around the rotating shaft under the action of the torsion spring, disengaging from the back of the ratchet teeth, and the transmission disk remains stationary.

[0016] Furthermore, the rotary joint includes a fixed end and a rotating end. The fixed end is connected to the gas supply pipe by a thread, and a PTFE sealing strip is provided at the connection. The rotating end is fixed to the top of the rotating shaft by a flat key. A stepped sealing ring is provided at the connection between the rotating end and the rotating shaft. An axial gas channel is opened inside the rotary joint. One end of the gas channel is connected to the gas supply pipe, and the other end is connected to the piston chamber.

[0017] The beneficial effects of this invention are: 1. This invention employs a mixing structure combining anchor-type blades and liftable turbine-type blades. Based on fluid mechanics principles, it achieves synergistic mixing. When the anchor-type blades rotate, they push the material along the inner wall of the vessel to form an axial overall circulation, covering most of the vessel's space. The turbine-type blades, through the pressure transmission principle of the piston chamber and compressed gas, can flexibly rise and fall axially. Their closed blade structure generates strong axial thrust. Under the radial limiting effect of the sleeve guide boss and guide groove, they smoothly penetrate into the lower region of the vessel, forming convective mixing with the anchor-type blades. This dual mixing mode effectively breaks the mixing dead zone of a single blade, greatly improving the mixing uniformity of solid and liquid materials, significantly accelerating the mass and heat transfer rate of the iron phosphate synthesis reaction, avoiding the problem of incomplete local reactions, and ultimately improving the purity of the product.

[0018] 2. This invention addresses the industry pain point of material adhesion to the reactor wall during the synthesis of ferric phosphate. Based on the unidirectional meshing transmission principle of a ratchet and pawl, an intermittent wall scraping mechanism is designed. When the shaft rotates counterclockwise, the ratchet drives the transmission disc and scraper to rotate synchronously via the pawl. The scraper adopts an arc-shaped structure with the curvature of the reactor inner wall, and in conjunction with a silicone rubber strip, it can efficiently scrape off the material adhering to the wall. When the shaft rotates clockwise, the pawl disengages from the ratchet under the elastic action of the torsion spring, and the scraper remains stationary to reduce rubber strip wear. This design ensures scraping efficiency, avoids material waste and reactor wall corrosion, extends the service life of the rubber strip through the intermittent wall scraping mode, and prevents interference with the stirring flow field during wall scraping, ensuring the stability of the reaction system and further improving product purity. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a reaction vessel device for synthesizing iron phosphate materials according to the present invention; Figure 2 This is a schematic cross-sectional view of the reactor body of a reaction vessel for synthesizing iron phosphate materials according to the present invention. Figure 3 This is a schematic diagram of the connection structure between the rotary joint and the rotating shaft of a reaction vessel device for synthesizing iron phosphate materials according to the present invention; Figure 4 This is a schematic diagram of the rotating shaft and anchor-type blades of a reaction vessel device for synthesizing iron phosphate materials according to the present invention; Figure 5 This is a schematic diagram of the turbine blade structure of a reaction vessel device for synthesizing iron phosphate materials according to the present invention; Figure 6 This is a schematic diagram of the internal structure of the drive disc of a reaction vessel device for synthesizing iron phosphate materials according to the present invention. Figure 7 This is a partially enlarged schematic diagram of the reactor device for synthesizing iron phosphate material proposed in this invention.

[0020] In the diagram: 1. Reactor body; 11. Sealing cover; 12. Support leg; 13. Feeding port; 14. Feeding port; 15. Discharge port; 2. Drive motor; 21. Rotating shaft; 22. Anchor blade; 23. Piston chamber; 24. Sleeve; 25. Ratchet; 3. Transmission disc; 31. Bracket; 32. Scraper; 33. Rotating shaft; 34. Disc cover; 35. Pawl; 4. Turbine blade; 41. Movable rod; 42. Piston; 43. Return spring; 5. Rotary joint; 51. Gas supply pipe. Detailed Implementation

[0021] To make the technical means and objectives and effects of the present invention easier to understand, the embodiments of the present invention will be described in detail below with reference to specific illustrations.

[0022] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] like Figure 1-7 As shown, the present invention discloses a reactor device for synthesizing iron phosphate materials, including a reactor body 1, a drive motor 2, a transmission disk 3, and a turbine blade 4.

[0026] The vessel body 1 serves as a reaction container, and a sealing cover 11 is fixedly installed on its top. The sealing cover 11 and the vessel body 1 are connected in a detachable and sealed manner through a flange structure and a sealing gasket, ensuring the airtightness during the reaction process.

[0027] The drive motor 2 is fixedly mounted on the motor mounting base on the top of the sealing cover 11 by bolts. A rotating shaft 21 is vertically arranged at the bottom of the sealing cover 11 and inside the vessel body 1. The rotating shaft 21 is rotatably connected to the sealing cover 11 by a deep groove ball bearing. The output shaft of the drive motor 2 is connected to the top of the rotating shaft 21 by a flexible coupling to ensure the stability of power transmission. When the drive motor 2 is started, it can drive the rotating shaft 21 to rotate in both directions at a set speed.

[0028] Anchor-type blades 22 are integrally formed below the rotating shaft 21. The anchor-type blades 22 have a symmetrically distributed arc-shaped structure and are used to stir and mix the materials in the vessel body 1. Turbine-type blades 4 are installed at the bottom of the rotating shaft 21 using a liftable structure. Specifically, both the upper and lower ends of the turbine blade 4 are vertically fixed with movable rods 41. A piston 42 is welded and fixed to the top of the upper movable rod 41. A piston cavity 23 adapted to the piston 42 is axially formed inside the shaft 21 below. The piston 42 is movably embedded in the piston cavity 23, realizing a sliding fit between the turbine blade 4 and the shaft 21. To ensure the airtightness of the piston cavity 23, the piston 42 is designed as a cylindrical structure. Two annular sealing grooves with a spacing of 12mm are formed on its outer wall. An O-ring made of fluororubber is installed in the sealing groove. The outer diameter of the sealing ring is 0.3mm larger than the inner diameter of the piston cavity 23. Through interference fit, it fits tightly against the inner wall of the piston cavity 23, effectively preventing gas leakage.

[0029] A return spring 43 is also provided at the bottom of the piston chamber 23. The return spring 43 is a stainless steel compression spring with an elastic coefficient that is adapted to the lifting and lowering requirements of the turbine blade 4. The return spring 43 is sleeved on the outside of the movable rod 41 above the turbine blade 4. One end is embedded in the positioning groove at the bottom of the piston 42 and fixedly abuts against it, while the other end abuts against the annular positioning platform on the inner wall of the bottom of the piston chamber 23.

[0030] A rotary joint 5 is installed on the top of the rotating shaft 21. The rotary joint 5 includes a fixed end and a rotating end. The fixed end is connected to the gas supply pipe 51 by a pipe thread. PTFE sealing tape is wrapped around the connection to enhance the sealing performance. The rotating end is fixedly connected to the top of the rotating shaft 21 by a flat key and rotates synchronously with the rotating shaft 21. A stepped sealing ring is provided at the connection between the rotating end and the rotating shaft 21 to further ensure the airtightness during the rotation process.

[0031] The rotary joint 5 has an axial gas passage inside. One end of the gas passage is connected to the gas supply pipe 51, and the other end is connected to the piston chamber 23 inside the rotating shaft 21. The top of the gas supply pipe 51 passes through the sealing cover 11 and extends to the outside of the vessel body 1 for connecting to an external compressed gas source.

[0032] When compressed gas of 0.5 MPa is introduced into the piston chamber 23 through the gas supply pipe 51, the gas pressure pushes the piston 42 to move downward against the elastic force of the return spring 43, thereby driving the movable rod 41 and the turbine blade 4 to descend axially; when the compressed gas supply stops, the return spring 43 pushes the piston 42 upward under its own elastic force, driving the turbine blade 4 to rise back to the initial position, thereby realizing the lifting and lowering adjustment of the turbine blade 4.

[0033] A sleeve 24 is welded and fixed at the center of the lower part of the anchor blade 22. The sleeve 24 and the rotating shaft 21 are on the same axis. The movable rod 41 below the turbine blade 4 is movably inserted into the sleeve 24.

[0034] The inner wall of the sleeve 24 is provided with two symmetrically distributed guide grooves along the axial direction. The outer wall of the movable rod 41 below the turbine blade 4 is provided with a guide boss that matches the guide groove. The guide boss slides into the guide groove. Through the cooperation between the guide groove and the guide boss, the lifting and lowering movement of the turbine blade 4 is radially limited to ensure that it can only move along the axial direction, avoid deflection during the lifting and lowering process, and ensure the stirring stability.

[0035] A transmission disc 3 is fitted on top of the rotating shaft 21. A disc cover 34 is detachably installed on the top of the transmission disc 3. The disc cover 34 is fixedly connected to the transmission disc 3 by four bolts evenly distributed around the circumference, which facilitates the subsequent disassembly and maintenance of internal components.

[0036] The rotating shaft 21 passes through the center of the disc cover 34. A polytetrafluoroethylene wear-resistant sealing gasket is installed at the point where the disc cover 34 and the rotating shaft 21 pass through. The inner diameter of the sealing gasket and the outer diameter of the rotating shaft 21 form an interference fit, which not only ensures the smooth rotation of the rotating shaft 21, but also prevents the material in the vessel from entering the transmission disc 3.

[0037] The transmission disc 3 has symmetrically welded brackets 31 on both sides. Scrapers 32 are fixedly installed on the outer side of the brackets 31 by bolts. Anchor blades 22 are set on the inner side of the scrapers 32, and they do not interfere with each other's work.

[0038] The scraper 32 is designed as an arc-shaped structure with the same curvature as the inner wall of the vessel 1. Its outer wall is fixedly connected with an 8mm thick rubber strip through a T-shaped slot. The rubber strip is made of acid and alkali resistant and wear-resistant silicone material, which is suitable for the reaction environment in the iron phosphate synthesis process. The adhesion pressure between the rubber strip on the outer wall of the scraper 32 and the inner wall of the vessel 1 is controlled at 0.2MPa to ensure that it can effectively scrape off the material sticking to the wall without causing wear to the rubber strip or the inner wall of the vessel due to excessive pressure.

[0039] A ratchet 25 is fixedly connected to the outer wall of the rotating shaft 21 and located inside the transmission disk 3 via a key. A pawl 35 is movably mounted on the inner side of the transmission disk 3 via a rotating shaft 33. A torsion spring is provided at the end of the pawl 35 away from the rotating shaft 33 as an elastic clamping element. The torsion spring is sleeved on the rotating shaft 33, with one end embedded in the groove of the pawl 35 for fixed connection, and the other end fixedly connected to the mounting plate on the inner wall of the transmission disk 3. The elastic force of the torsion spring keeps the pawl 35 in contact with the ratchet 25.

[0040] When the rotating shaft 21 rotates counterclockwise, the tooth surface of the ratchet 25 is in close contact with the working surface of the pawl 35. The ratchet 25 drives the transmission disk 3 to rotate synchronously through the pawl 35, which in turn causes the bracket 31 to drive the scraper 32 to rotate along the inner wall of the vessel body 1, thereby removing the material adhering to the wall. When the rotating shaft 21 rotates clockwise, the back of the teeth of the ratchet 25 contacts the pawl 35, overcoming the elastic force of the torsion spring and pushing the pawl 35 to rotate around the rotating shaft 33, causing the pawl 35 to disengage from the back of the teeth of the ratchet 25. At this time, the transmission disk 3 and the scraper 32 remain stationary. By controlling the forward and reverse rotation of the drive motor 2, the scraper 32 can perform intermittent wall scraping operation.

[0041] The sealing cap 11 has a feeding port 13 on one side of its top and a feeding port 14 on the other side. Both of them are connected to the interior of the vessel body 1 to meet the feeding requirements of different materials.

[0042] The feeding port 13 is designed with a trumpet-shaped structure to facilitate the rapid addition of solid raw materials. The top of the port is hinged to a sealing end cap with a lock. After the material is added, the end cap is closed and locked to ensure the airtightness of the reaction process. The feeding port 14 is equipped with an adjustable flow ball valve. By rotating the ball valve handle, the flow rate can be adjusted within the range of 0-50L / min, which is suitable for the precise addition of liquid reactants.

[0043] The bottom of the vessel body 1 is designed with a conical structure to facilitate the collection and discharge of reaction products. A discharge port 15 is welded and fixed at the center of the bottom of the vessel body 1. The discharge port 15 is a cylindrical structure with a polytetrafluoroethylene corrosion-resistant coating on its inner wall, which can effectively resist the corrosion of the reaction system and extend the service life of the equipment.

[0044] A pneumatic ball valve is installed on the discharge port 15. The valve is opened and closed by an external air circuit to achieve rapid discharge of the product.

[0045] Four evenly distributed support legs 12 are fixedly welded around the bottom of the vessel body 1. The support legs 12 are made of hollow stainless steel rods, combining strength and lightweight characteristics. A 12mm thick anti-slip rubber pad is glued to the bottom of each support leg 12 with strong adhesive to enhance the stability of the device during placement and prevent displacement due to vibration during operation. The support legs 12 are equipped with a threaded length adjustment mechanism; the length can be adjusted within a range of 50-150mm by rotating the adjusting nut, facilitating adjustment of the vessel body 1's levelness according to the flatness of the ground.

[0046] Working principle: First, according to the reaction formula, open the sealed end cap of the feeding port 13 and put solid raw materials, such as iron powder and phosphate, into the reactor body 1 through the funnel-shaped feeding port 13. After the feeding is completed, close the end cap and lock it. Then, add liquid reactants, such as acid solutions and oxidants, into the reactor body 1 through the feeding port 14. According to the reaction rate requirements, rotate the ball valve handle to adjust the feeding flow to the set value. Start the drive motor 2 and drive the rotating shaft 21 to rotate clockwise at the set speed through the flexible coupling. The rotating shaft 21 drives the anchor blade 22 to rotate synchronously, stirring and mixing the solid-liquid mixture in the reactor body 1 to promote the initial contact reaction of the materials.

[0047] According to the mixing state of the materials during the reaction process, compressed gas at a set pressure is introduced into the piston chamber 23 through the gas supply pipe 51. The gas enters the piston chamber 23 through the axial gas channel of the rotary joint 5, pushing the piston 42 to move downward against the elastic force of the return spring 43. This causes the movable rod 41 and the turbine blade 4 to descend axially. Under the guiding and limiting action of the sleeve 24, the turbine blade 4 descends smoothly to the lower region of the vessel body 1, which performs high-intensity stirring on the materials in the lower part of the vessel body, improves the mixing uniformity of the materials, and accelerates the reaction. When it is necessary to adjust the height of the turbine blade 4 or reset it, the compressed gas supply is stopped. The return spring 43 pushes the piston 42 upward under its own elastic force, causing the turbine blade 4 to rise back to the initial position. The lifting and lowering state of the turbine blade 4 can be adjusted multiple times according to the reaction requirements.

[0048] During the counterclockwise rotation of the rotating shaft 21, the ratchet 25 rotates synchronously, and its tooth surface is in contact with the working surface of the pawl 35. Under the elastic clamping action of the torsion spring, the pawl 35 is engaged in the tooth groove of the ratchet 25, driving the transmission disk 3 to rotate synchronously. This causes the bracket 31 to drive the scraper 32 to rotate along the inner wall of the vessel 1. Under the adhesion pressure of 0.2MPa, the silicone strip on the outer wall of the scraper 32 scrapes off the material adhering to the inner wall of the vessel 1, preventing the material from sticking to the wall and causing incomplete reaction or a decrease in product purity. When it is necessary to pause the wall scraping, the drive motor 2 is controlled to rotate forward, causing the rotating shaft 21 to rotate counterclockwise. At this time, the back of the teeth of the ratchet 25 pushes the pawl 35 to disengage, the scraper 32 stops rotating, and the anchor blade 22 continues to stir, realizing the coordinated cooperation between wall scraping and stirring.

[0049] During the reaction, the rotating end of the rotary joint 5 rotates synchronously with the rotating shaft 21, while the fixed end remains stationary with the gas delivery pipe 51. The PTFE sealing strip and stepped sealing ring ensure the airtightness of the gas delivery process, preventing gas leakage from affecting the lifting and lowering control of the turbine blade 4. After the reaction is complete, the drive motor 2 is turned off, stopping the gas delivery. The turbine blade 4 resets under the action of the return spring 43, and then the pneumatic ball valve is opened. The ferric phosphate product in the reactor body 1 is quickly discharged through the outlet 15 under the convergence effect of the conical bottom, completing the collection. If subsequent cleaning or maintenance of the device is required, the cover 34 on top of the transmission disc 3 can be removed to inspect and maintain the ratchet 25, pawl 35, and torsion spring. The silicone rubber strip on the outer wall of the scraper 32 can also be replaced to ensure long-term stable operation of the device.

[0050] The reactor device in this embodiment achieves efficient material stirring, effective scraping of materials adhering to the wall, and stable control of the reaction process through the precise coordination of various components. All structural designs are based on the process requirements of iron phosphate material synthesis, ensuring the practicality and reliability of the technical solution. Those skilled in the art can accurately reproduce the structure and use of the device based on the above specific implementation method.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reaction vessel apparatus for synthesizing iron phosphate material, characterized in that, It includes a vessel body (1), a drive motor (2), a transmission disc (3), and a turbine blade (4). The top of the vessel body (1) is equipped with a sealing cover (11), the drive motor (2) is fixedly installed on the top of the sealing cover (11), and a rotating shaft (21) is vertically and rotatably installed at the bottom of the sealing cover (11) and inside the vessel body (1). The output shaft of the drive motor (2) is connected to the rotating shaft (21) via a coupling. An anchor blade (22) is provided below the rotating shaft (21). A turbine blade (4) is installed at the bottom of the rotating shaft (21) and can be raised and lowered. Movable rods (41) are provided at both the upper and lower ends of the turbine blade (4). A piston (42) is fixedly installed at the top of the movable rod (41) above the turbine blade (4). A piston chamber (23) is opened inside the rotating shaft (21), and the piston (42) is movably installed in the piston chamber (23). A transmission disc (3) is fitted above the rotating shaft (21). Supports (31) are symmetrically arranged on both sides of the transmission disc (3). A scraper (32) is fixedly installed on the outside of the support (31). A ratchet (25) is fixedly installed on the outer wall of the rotating shaft (21) and on one side inside the transmission disc (3). A rotating shaft (33) is arranged on one side inside the transmission disc (3). A pawl (35) is movably installed on one side inside the transmission disc (3) through the rotating shaft (33). A rotary joint (5) is installed on the top of the rotating shaft (21). An air supply pipe (51) is provided at the input end of the rotary joint (5), and the top of the air supply pipe (51) passes through the sealing cover (11). The output end of the rotary joint (5) is connected to the piston chamber (23) inside the rotating shaft (21).

2. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, A sleeve (24) is centrally located below the anchor blade (22). The sleeve (24) and the rotating shaft (21) are on the same axis. The movable rod (41) below the turbine blade (4) is movably inserted into the sleeve (24). An axial guide groove is provided on the inner wall of the sleeve (24). A guide boss that matches the guide groove is provided on the outer wall of the movable rod (41) below the turbine blade (4). The guide boss slides into the guide groove to achieve radial limiting during the lifting and lowering process of the turbine blade (4).

3. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The transmission disk (3) is detachably mounted with a disk cover (34) on its top. The rotating shaft (21) passes through the center of the disk cover (34). The disk cover (34) is fixedly connected to the transmission disk (3) by 3-6 bolts evenly distributed around the circumference. A polytetrafluoroethylene wear-resistant sealing gasket is provided at the point where the disk cover (34) passes through the rotating shaft (21). The inner diameter of the sealing gasket is interference-fitted with the outer diameter of the rotating shaft (21).

4. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The anchor blade (22) is located inside the scraper (32). The scraper (32) is an arc-shaped structure with the same curvature as the inner wall of the vessel body (1). The outer wall of the scraper (32) is provided with a rubber strip with a thickness of 5-10mm. The rubber strip is fixedly connected to the scraper (32) through a T-shaped groove. The bonding pressure between the rubber strip on the outer wall of the scraper (32) and the inner wall of the vessel body (1) is 0.1-0.3MPa.

5. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The sealing cap (11) has a feeding port (13) on one side of its top and a feeding port (14) on the other side of its top. Both the feeding port (13) and the feeding port (14) are connected to the interior of the vessel body (1). The feeding port (13) is a funnel-shaped structure with a locking sealing end cap hinged to its top. The feeding port (14) is equipped with an adjustable flow ball valve.

6. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The bottom of the vessel body (1) is provided with a discharge port (15) in the center. The discharge port (15) is a cylindrical structure with a corrosion-resistant coating on its inner wall. A pneumatic ball valve is provided on the discharge port (15). Four evenly distributed support legs (12) are fixedly welded around the bottom of the vessel body (1). The support legs (12) are hollow stainless steel rods, and a 10-15mm thick anti-slip rubber pad is fixedly pasted on the bottom of the support legs (12).

7. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The piston (42) has a cylindrical structure. The outer wall of the piston (42) has two annular sealing grooves with a spacing of 10-15mm. An O-ring elastic seal is installed in the sealing groove. The elastic seal is made of fluororubber. The outer diameter of the seal is 0.2-0.5mm larger than the inner diameter of the piston cavity (23) to form an interference fit and ensure the airtightness of the piston cavity (23).

8. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, A return spring (43) is provided at the bottom of the piston chamber (23). The return spring (43) is a stainless steel compression spring. The return spring (43) is sleeved on the outside of the movable rod (41) above the turbine blade (4). One end is fixedly abutted to the bottom of the piston (42) through the positioning groove, and the other end abuts to the positioning platform on the inner wall of the bottom of the piston chamber (23). When compressed gas is introduced into the piston chamber (23) through the gas supply pipe (51), the gas pushes the piston (42) to move downward against the elastic force of the return spring (43), which drives the movable rod (41) and the turbine blade (4) to descend axially. When the compressed gas is stopped, the return spring (43) pushes the piston (42) to reset, which drives the turbine blade (4) to rise.

9. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The end of the pawl (35) away from the rotating shaft (33) is provided with an elastic clamping element, which is a torsion spring. The torsion spring is sleeved on the rotating shaft (33). One end of the torsion spring is fixedly connected to the slot of the pawl (35), and the other end is fixedly connected to the hanging platform on the inner wall of the transmission disk (3). When the rotating shaft (21) rotates clockwise, the tooth surface of the ratchet (25) is in contact with the working surface of the pawl (35), pushing the pawl (35) to drive the transmission disk (3) to rotate synchronously. When the rotating shaft (21) rotates counterclockwise, the pawl (35) rotates around the rotating shaft (33) under the action of the torsion spring, disengaging from the back of the teeth of the ratchet (25), and the transmission disk (3) remains stationary.

10. The reactor apparatus for synthesizing iron phosphate material according to claim 1, characterized in that, The rotary joint (5) includes a fixed end and a rotating end. The fixed end is connected to the gas pipe (51) by a thread, and a PTFE sealing strip is provided at the connection. The rotating end is fixed to the top of the rotating shaft (21) by a flat key. A stepped sealing ring is provided at the connection between the rotating end and the rotating shaft (21). An axial gas channel is provided inside the rotary joint (5). One end of the gas channel is connected to the gas pipe (51), and the other end is connected to the piston chamber (23).

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