Multifunctional reaction kettle and iron phosphate preparation device thereof

Abstract

The application provides a multifunctional reaction kettle and a device for preparing iron phosphate, which comprises a kettle body, a feeding opening arranged at the upper end of the kettle body, a discharging pipe arranged at the lower end of the kettle body, a strip-shaped temperature adjusting shell arranged at one side of the kettle body, a suction pump arranged at the upper part of the strip-shaped temperature adjusting shell, a suction pipe communicated with the inlet end of the suction pump and arranged at the upper part of the side wall of the kettle body, the outlet end of the suction pump arranged downward in the strip-shaped temperature adjusting shell, an electric heating wire arranged at the lower part in the strip-shaped temperature adjusting shell, an air outlet pipe connected with the lower end of the strip-shaped temperature adjusting shell, a valve arranged on the air outlet pipe, an annular air injection pipe communicated with the free end of the air outlet pipe and arranged at the lower part of the kettle body, a plurality of air injection pipes arranged in the kettle body, and a plurality of air injection holes arranged at the free end of each air injection pipe. The application adopts the circulating air flow stirring temperature control mode, simplifies the internal structure of the reaction kettle, and can automatically perform iron phosphate extrusion dehydration after the reaction, thereby simplifying the preparation steps.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of reaction kettles and relates to a multifunctional reaction kettle and a phosphoric iron preparation device thereof. BACKGROUND

[0002] In the chemical industry field, as one of the important chemical unit equipments, reaction kettles are widely used in various chemical reaction processes. The main function is to provide a closed or semi-closed space so that the reactants can undergo chemical reactions under specific temperature and pressure conditions to produce the required products. With the continuous development of the chemical industry and the progress of technology, the design and manufacture of reaction kettles are constantly optimized and upgraded to meet the needs of different chemical reaction processes.

[0003] Most of the reaction kettles on the market still use traditional mechanical stirring methods to promote the mixing between the reactants. Usually, one or more artificial stirring devices (such as stirrers) are installed inside these reaction kettles, which are driven by motors to stir the reaction medium, ensuring that the reactants are in full contact and improving the reaction rate. However, the design and installation of stirrers are complex, which not only increases the overall structural complexity of the reaction kettle, but also may lead to an increase in maintenance costs. In addition, most existing reaction kettles control the temperature by conducting heat inward from the outside of the kettle body, and the response speed of their temperature control systems is slow, which may affect the reaction process and the quality of the final product.

[0004] As an important positive electrode material for batteries, the preparation process of phosphoric iron usually involves a series of complex chemical reactions, which also requires the use of reaction kettles for reaction. After the synthesis of phosphoric iron in the reaction kettle is completed, in order to further remove the water therein, extrusion dehydration treatment is usually required. However, the existing reaction kettle design cannot directly achieve this function, i.e., it cannot complete both the reaction and dehydration steps in the same container. Therefore, the preparation process of phosphoric iron needs to be equipped with additional equipment specifically for dehydration, such as filter presses. In this way, not only does it increase the floor area and equipment investment cost of the entire production line, but it also reduces the preparation efficiency and limits the expansion of the production scale. SUMMARY

[0005] The purpose of the present application is to provide a multifunctional reaction kettle and a phosphoric iron preparation device thereof, which adopts a circulating air flow stirring and temperature control method, simplifies the internal structure of the reaction kettle, and can automatically perform phosphoric iron extrusion dehydration after the reaction is completed, thereby simplifying the preparation steps and reducing equipment costs.

[0006] To solve the above technical problems, the application provides a multifunctional reaction kettle, which comprises a kettle body, a feeding opening is arranged at the upper end of the kettle body, a sealing cover is detachably connected to the feeding opening, a plurality of liquid feeding pipes are arranged at the upper end of the kettle body, a valve is arranged on each liquid feeding pipe, a discharging pipe is arranged at the lower end of the kettle body, a strip-shaped temperature adjusting shell is arranged on one side of the kettle body, a suction pump is arranged at the upper part of the strip-shaped temperature adjusting shell, a suction pipe which is in communication with the inlet end of the suction pump is arranged at the upper part of the side wall of the kettle body, the outlet end of the suction pump is arranged downward in the strip-shaped temperature adjusting shell, an electric heating wire is arranged at the lower part in the strip-shaped temperature adjusting shell, an air outlet pipe is connected to the lower end of the strip-shaped temperature adjusting shell, a valve is arranged on the air outlet pipe, an annular air injection pipe which is in communication with the free end of the air outlet pipe is arranged at the lower part of the kettle body, and the annular air injection pipe is provided with a plurality of aeration pipes which extend into the kettle body, a plurality of aeration holes are formed in the free end of each aeration pipe.

[0007] An installation opening is formed in one side of the strip-shaped temperature adjusting shell, a temperature guide plate is arranged in the installation opening, the temperature guide plate is provided with a plurality of heat absorbing fins which are arranged vertically and located above the electric heating wire, the temperature guide plate is provided with a plurality of cold absorbing fins which are arranged vertically and located outside, a temperature insulation cover which covers the cold absorbing fins and has an open lower end is arranged outside the strip-shaped temperature adjusting shell, a gap is left between the upper end of the cold absorbing fin and the top of the temperature insulation cover, a blower is mounted at the upper end of the strip-shaped temperature adjusting shell, a vortex cooling pipe is in communication with the outlet end of the blower, the hot end of the vortex cooling pipe faces outward, and the cold end of the vortex cooling pipe is in communication with the upper end of the temperature insulation cover through a cold guide pipe.

[0008] By adopting the above technical scheme, when the kettle body is used for reaction, the materials are added from the feeding opening, and the reaction reagents are gradually added into the kettle body through different liquid feeding pipes. When only stirring is needed, only the suction pump is started, negative pressure is generated, air in the kettle body is sucked into the strip-shaped temperature adjusting shell through the suction pipe, and the air is exposed into the kettle body in the form of small air bubbles through the air outlet pipe, the annular air injection pipe and the aeration pipe. The upward movement of the air bubbles drives the liquid in the kettle body to tumble, so that stirring is realized. When the aeration pipes are inclined in the same direction, the same direction thrust is generated, the liquid in the kettle body is pushed to swirl, and further stirring is realized.

[0009] When the reaction needs to be heated, the electric heating wire works to heat the air passing through the air pipe, the air passing through the strip-shaped temperature adjusting shell is heated into hot air by the electric heating wire, and finally forms a high-temperature steam pocket in the kettle body and rises, gradually transferring the heat in the air to the liquid in the kettle body, so that rapid heating is realized; when cooling is needed, the air flow of the air blower is separated into hot air flow and cold air flow after passing through the vortex cooling pipe, the hot air flow is discharged from the hot end, and the cold air flow is discharged from the cold end and enters the temperature insulation cover, the low-temperature air flow absorbs the temperature of the heat absorbing sheet, and transfers the low temperature to the heat absorbing sheet, so that the heat absorbing sheet absorbs the temperature of the air passing through the strip-shaped temperature adjusting shell and becomes low-temperature air flow, and finally forms low-temperature bubbles rising in the kettle body to absorb the temperature of the liquid in the kettle body and rapidly cool the liquid in the kettle body.

[0010] The kettle body is further provided with a barometer for detecting the air pressure in the kettle body, a temperature sensor for detecting the temperature in the kettle body and a pH sensor for detecting the pH value in the kettle body.

[0011] The kettle body is further provided with a breathing pipe arranged upwardly on the upper end of the kettle body, a valve arranged on the breathing pipe and a breathing valve communicated with the upper end of the breathing pipe.

[0012] Each valve is an electromagnetic valve.

[0013] Each air pipe is inclined in the same direction around the circumference.

[0014] The application further provides a device for preparing iron phosphate, a plurality of filter holes are formed in the side wall of the discharge pipe, filter cloth is arranged on the outer periphery of the discharge pipe, a discharge pipe is communicated with the lower end of the discharge pipe, a discharge channel is communicated with the outer end of the discharge pipe, a sealed drainage cylinder is sleeved on the outer periphery of the discharge pipe, a drainage pipe is communicated with the outer end of the lower end of the sealed drainage cylinder, a driving motor is installed on the lower end of the discharge pipe, a rotating shaft connected with the power output shaft of the driving motor is rotatably connected in the discharge pipe and the discharge pipe, helical extrusion blades are arranged on the outer periphery of the rotating shaft, and the pitch of the helical extrusion blades gradually decreases from top to bottom in the discharge pipe.

[0015] The lower end of the kettle body is provided with a rotating hole, the bottom of the kettle body is provided with a plurality of material leakage holes in the outer periphery of the rotating hole in the discharge pipe, the rotating hole is rotationally connected with a shaft sleeve, the lower end of the shaft sleeve is provided with a hollow transmission sleeve in the discharge pipe, the transmission sleeve does not block the material leakage hole, the upper end of the shaft sleeve is provided with a connecting disc in the kettle body, the connecting disc is outwardly provided with a plurality of hole blocking pieces corresponding to the material leakage holes, the bottom of the kettle body is provided with a limiting strip on both sides of the hole blocking piece, when one side of the hole blocking piece is in contact with one limiting strip, the hole blocking piece completely blocks the material leakage hole, when the other side of the hole blocking piece is in contact with the other limiting strip, the hole blocking piece does not block the material leakage hole, so that the material leakage hole is completely opened.

[0016] The lower end of the transmission sleeve is provided with a through hole rotationally connected with the rotating shaft, the rotating shaft extending into the transmission sleeve is provided with a drive gear, the transmission sleeve is provided with a plurality of arc-shaped limiting sliding grooves arranged from inside to outside, each arc-shaped limiting sliding groove is slidably connected with an arc-shaped rack engaged with the outer periphery of the drive gear, and each arc-shaped rack is provided with an elastic member between the side away from the drive gear and the arc-shaped limiting sliding groove.

[0017] By adopting the above technical scheme, before the chemical reaction in the kettle body, the motor drives the rotating shaft to rotate, the drive gear on the rotating shaft drives the transmission sleeve and the hole blocking piece to rotate through the engagement with the arc-shaped rack, so that the hole blocking piece is rotated to be in contact with the limiting strip on one side, at this time, the hole blocking piece blocks the material leakage hole, preventing the solution in the kettle body from flowing into the discharge pipe through the material leakage hole.

[0018] When the reaction in the kettle body is completed, the motor drives the rotating shaft to rotate reversely, since the hole blocking piece reversely rotates and is not blocked by the limiting strip, at this time, the arc-shaped rack is engaged with the drive gear, the rotating shaft can drive the transmission sleeve and the hole blocking piece to rotate, so that the hole blocking piece reversely rotates to be in contact with the other limiting strip, the material leakage hole is opened, the motor continues to drive the rotating shaft to rotate reversely, the engagement between the drive gear and the arc-shaped rack is continuously disengaged again, the mixed liquid flows into the discharge pipe, the moisture in the mixed liquid continuously flows out through the filter hole and the filter cloth, and in the process of continuously conveying the mixed liquid downward by the spiral extrusion blade, the moisture is gradually extruded, finally, the dried product is discharged from the discharge channel, and the pressed moisture is discharged through the drain pipe in the sealed drain cylinder.

[0019] The application further provides that the drive gear is connected with a connecting shaft penetrating upward through the shaft sleeve and rotationally connected with the shaft sleeve, the connecting shaft is provided with a stirring shaft at the upper end of the connecting disc, the outer periphery of the stirring shaft is provided with a plurality of spiral stirring blades, and the spiral direction of the spiral stirring blades is the same as the inclination direction of the aeration pipe.

[0020] By adopting the technical scheme, if the stirring in the kettle body needs to be strengthened, the driving motor continues to drive the rotating shaft to rotate, the meshing of the driving gear and the arc-shaped gear rack continuously slips, and the helical stirring blade on the stirring shaft is driven to rotate to stir the solution at the bottom of the kettle body.

[0021] The application is further provided that the outer diameter of the stirring shaft and each helical stirring blade gradually decreases from bottom to top.

[0022] The application is further provided that the teeth of the driving gear are smooth circular arcs, and the teeth of each arc-shaped gear rack are smooth circular arcs.

[0023] The application is further provided that the elastic member is an elastic sponge.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] Firstly, the application innovatively uses circulating air flow to stir the solution in the kettle body, air is extracted from the upper part of the kettle body, and the air is injected from the bottom of the kettle body by aeration, so that the micro-bubbles generated by aeration continuously drive the solution to roll, which plays a stirring role. Compared with the traditional stirring method using a stirrer, the internal structure of the reaction kettle can be effectively simplified, and the overall structure of the reaction kettle can also be simplified.

[0026] Secondly, the application can heat or cool the air while aeration stirring, and quickly heat or cool the solution from the inside of the solution using micro-bubbles, quickly complete the temperature regulation of the solution, and further simplify the overall structure of the reaction kettle due to the combination with the stirring system.

[0027] Thirdly, the application uses a spiral extrusion method at the outlet position of the reaction kettle to extrude and dry the product, without the need for additional transfer to a filter press for extrusion drying, which can effectively simplify the preparation steps, reduce equipment costs, and be suitable for the preparation of iron phosphate.

[0028] Fourthly, the application can drive the hole blocking piece to block the material leakage hole by forward rotation of the rotating shaft, continue to rotate without driving the hole blocking piece to rotate after blocking, always ensure that the material leakage hole is closed, and when the material leakage hole needs to be opened, reverse rotation of the rotating shaft can drive the hole blocking piece to rotate and open the material leakage hole, and continue to rotate without driving the hole blocking piece to rotate, which can always ensure that the material leakage hole is open for discharging.

[0029] Fifthly, when the rotating shaft continues to rotate, the helical stirring blade can also be driven to assist in stirring at the bottom of the kettle body, thereby strengthening the stirring of the solution in the kettle body. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the application;

[0031] Figure 2 This is a schematic diagram of the overall structure of Example 1;

[0032] Figure 3 It is a partial sectional view used to show the internal structure of the vessel;

[0033] Figure 4 This is a partial sectional view used to show the internal structure of the strip-shaped temperature regulating shell;

[0034] Figure 5 It is a partial sectional view used to show the internal structure of the sealed drainage cylinder and the discharge pipe;

[0035] Figure 6 It is a partial cross-sectional view used to show the plugging plate and spiral stirring blades at the bottom of the vessel;

[0036] Figure 7 It is a partial cross-sectional view used to show the rotating holes and leakage holes at the bottom of the vessel;

[0037] Figure 8 Used to demonstrate the connection between the shaft and the transmission sleeve;

[0038] Figure 9 Used to demonstrate the connection between the bushing, the transmission sleeve, and the plugging plate;

[0039] Figure 10 This is a partial sectional view used to show the connection between the transmission sleeve and the drive gear;

[0040] Figure 11 Used to demonstrate the connection between the rotating shaft, drive gear, and stirring shaft.

[0041] The components include: 1. Reactor body; 2. Feed port; 3. Sealing cap; 4. Liquid filling pipe; 5. Valve; 6. Pressure gauge; 7. Temperature sensor; 8. pH sensor; 9. Breathing pipe; 10. Breathing valve; 11. Discharge pipe; 12. Strip-shaped temperature regulating shell; 13. Suction pump; 14. Suction pipe; 15. Electric heating wire; 16. Gas outlet pipe; 17. Annular gas injection pipe; 18. Aeration pipe; 19. Aeration holes; 20. Temperature guide plate; 21. Heat absorption plate; 22. Cold absorption plate; 23. Insulation cover; 24. Blower; 25. Vortex cooling. 26. Cooling pipe; 27. Filter hole; 28. Filter cloth; 29. ​​Discharge pipe; 30. Discharge channel; 31. Sealed drain cylinder; 32. Drain pipe; 33. Drive motor; 34. Rotary shaft; 35. Spiral extrusion blade; 36. Rotary hole; 37. Leakage hole; 38. Bushing; 39. Transmission sleeve; 40. Connecting disc; 41. Plug plate; 42. Limiting strip; 43. Drive gear; 44. Arc-shaped limiting groove; 45. Arc-shaped rack; 46. Elastic element; 47. Connecting shaft; 48. Stirring shaft; 49. Spiral stirring blade. Detailed Implementation

[0042] The multifunctional reaction kettle and the iron phosphate preparation device thereof according to the present application will be further described in detail below in combination with the drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description. It should be noted that the drawings are very simplified and non-precise in proportion, which are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the present application. The same or similar reference signs in the drawings represent the same or similar parts.

[0043] Embodiment 1, refer to Figures 1-4 A multifunctional reaction kettle comprises a kettle body 1, an upper end of the kettle body 1 is provided with a feeding opening 2, the feeding opening 2 is detachably connected with a sealing cover 3, the sealing cover 3 is connected with the feeding opening 2 through a clamp, the upper end of the kettle body 1 is provided with four liquid feeding pipes 4, which are respectively used for adding different reagents, each liquid feeding pipe 4 is provided with a valve 5, and each valve 5 is an electromagnetic valve. The upper end of the kettle body 1 is provided with an air pressure gauge 6 for detecting the internal air pressure of the kettle body 1, the upper end of the kettle body 1 is provided with a temperature sensor 7 for detecting the internal temperature of the kettle body 1, the upper end of the kettle body 1 is provided with a pH sensor 8 for detecting the internal pH value of the kettle body 1, and the upper end of the kettle body 1 is provided with a breathing pipe 9, the breathing pipe 9 is provided with a valve 5, the valve 5 is an electromagnetic valve, and the upper end of the breathing pipe 9 is communicated with a breathing valve 10. When a closed reaction is needed, the valve 5 on the breathing pipe 9 is closed, the kettle body 1 is sealed, when a closed reaction is not needed, the valve 5 on the breathing pipe 9 is opened, and the internal and external air pressures of the kettle body 1 are balanced.

[0044] The lower end of the kettle body 1 is provided with a discharging pipe 11, and a strip-shaped temperature adjusting shell 12 is arranged on one side of the kettle body 1. An upper portion of the strip-shaped temperature adjusting shell 12 is provided with a suction pump 13, an upper portion of the side wall of the kettle body 1 is communicated with a suction pipe 14 which is communicated with the inlet end of the suction pump 13, the outlet end of the suction pump 13 is arranged downward in the strip-shaped temperature adjusting shell 12, an electric heating wire 15 is arranged in the lower portion of the strip-shaped temperature adjusting shell 12, and the lower end of the strip-shaped temperature adjusting shell 12 is connected with an air outlet pipe 16, the air outlet pipe 16 is provided with a valve 5, and the valve 5 is an electromagnetic valve. The lower portion of the kettle body 1 is provided with a ring-shaped air injection pipe 17 which is communicated with the free end of the air outlet pipe 16, and the ring-shaped air injection pipe 17 is provided with six air sparging pipes 18 which extend into the kettle body 1. Each air sparging pipe 18 is inclined in the same direction along the circumference, the free end of each air sparging pipe 18 is provided with a plurality of air sparging holes 19, air in the kettle body 1 is extracted through the suction pipe 14 and injected into the kettle body 1 through the air sparging holes 19 on the air sparging pipes 18, so that air flow circulation is realized, high-density air bubbles generated by air sparging are used for stirring, and air is used for transferring temperature from the inside to the outside, so that rapid temperature control is realized.

[0045] A mounting port (not shown) is formed on one side of the strip-shaped temperature adjusting shell 12, and a temperature guide plate 20 is arranged in the mounting port. The temperature guide plate 20 is provided with a plurality of vertically arranged heat absorbing fins 21 inside the strip-shaped temperature adjusting shell 12. Each heat absorbing fin 21 is located above the electric heating wire 15. The temperature guide plate 20 is provided with a plurality of vertically arranged cold absorbing fins 22 outside. A temperature insulation cover 23 covering the cold absorbing fins 22 and having an open lower end is arranged on the outside of the strip-shaped temperature adjusting shell 12. A gap is left between the upper end of the cold absorbing fins 22 and the top of the temperature insulation cover 23. A blower 24 is mounted at the upper end of the strip-shaped temperature adjusting shell 12. The outlet end of the blower 24 is connected to a vortex cooling pipe 25. The hot end of the vortex cooling pipe 25 faces outward. The cold end of the vortex cooling pipe 25 is connected to the upper end of the temperature insulation cover 23 through a cold guide pipe 26.

[0046] The vortex cooling pipe 25 (also known as a vortex pipe or a vortex tube) is a device that can separate compressed air into cold and hot air streams without any moving parts. Its working principle is based on the process of air throttling expansion, which utilizes the vortex motion of air in the pipe to achieve energy separation, thereby generating cold and hot air streams. Specifically, compressed air with a certain pressure is introduced into the inlet of the vortex pipe, accelerated under the action of a special nozzle, and begins to expand through the throttling effect. Subsequently, the accelerated air stream enters a cylindrical vortex generator. Due to the special geometric design, the air stream begins to rotate to form a free vortex. In this process, the rotating air stream is subjected to centrifugal force, and the outer layer of air rotates close to the pipe wall, while the inner layer of air tends to move towards the center of the pipe. The outer layer of air stream is heated due to friction with the pipe wall, becoming a hot air stream; while the inner layer of air stream is cooled due to energy loss, becoming a cold air stream.

[0047] Working principle: when the kettle body 1 is used for reaction, the material is added from the feeding port 2, and the reaction reagent is gradually added into the kettle body 1 through different liquid adding pipes 4. When only stirring is needed, only the suction pump 13 is started to generate negative pressure to suck the air in the kettle body 1 into the strip-shaped temperature adjusting shell 12 through the suction pipe 14. The air is exposed into the kettle body 1 in the form of small bubbles through the air outlet pipe 16, the annular air injection pipe 17, and the air exposure pipe 18. The rising of the bubbles drives the liquid in the kettle body 1 to tumble, achieving stirring. When the air exposure pipes 18 are inclined in the same direction, the same direction thrust is generated to push the liquid in the kettle body 1 to swirl, further stirring.

[0048] When heating reaction is needed, the electric heating wire 15 works to heat the air passing through, the air passing through the strip-shaped temperature adjusting shell 12 is heated into hot air by the electric heating wire 15, and finally forms high-temperature steam pocket in the kettle body 1 and rises, gradually transferring the heat in the air to the liquid in the kettle body 1, realizing rapid heating. When cooling is needed, the air blower 24 is started, and after the air flow of the air blower 24 passes through the vortex cooling pipe 25, the air is separated into hot air flow and cold air flow, the hot air flow is discharged from the hot end, and the cold air flow is discharged from the cold end and enters the temperature insulation cover 23, the low-temperature air flow absorbs the temperature of the cold absorbing sheet 22, and transfers the low temperature to the heat absorbing sheet 21, the low-temperature heat absorbing sheet 21 absorbs the temperature of the air passing through the strip-shaped temperature adjusting shell 12, so that the air becomes low-temperature air flow, and finally forms low-temperature air bubble in the kettle body 1 and rises, absorbing the temperature of the liquid in the kettle body 1, and rapidly cooling the liquid in the kettle body 1.

[0049] Embodiment 2, refer to Figure 1 ,5-11, based on the reaction kettle of embodiment 1, the side wall of the discharge pipe 11 is provided with a plurality of filter holes 27, the outer periphery of the discharge pipe 11 is provided with a layer of filter cloth 28, the lower end of the discharge pipe 11 is communicated with a discharge pipe 29, the discharge pipe 29 is communicated with a downwardly inclined discharge channel 30 outward, the outer periphery of the discharge pipe 11 is sleeved with a circle of sealing drainage cylinder 31, the lower end of the sealing drainage cylinder 31 is sealed with the discharge pipe 29, the lower end of the sealing drainage cylinder 31 is communicated with a drainage pipe 32 outward, the lower end of the discharge pipe 29 is installed with a driving motor 33, the discharge pipe 11 and the discharge pipe 29 are rotatably connected with a rotating shaft 34 connected with the power output shaft of the driving motor 33, the outer periphery of the rotating shaft 34 is provided with a spiral extrusion blade 35, the pitch of the spiral extrusion blade 35 gradually decreases from top to bottom in the discharge pipe 29, so that when the spiral extrusion blade 35 drives the mixed liquid to be transported downward, the spacing is continuously compressed, and the internal water is extruded out.

[0050] A rotating hole 36 is formed in the lower end of the kettle body 1, three leakage holes 37 in the discharge pipe 29 are formed in the bottom of the kettle body 1 outside the rotating hole 36, the rotating hole 36 is rotatably connected with a shaft sleeve 38, the lower end of the shaft sleeve 38 is provided with a hollow transmission sleeve 39 in the discharge pipe 29, which does not block the leakage hole 37, the upper end of the shaft sleeve 38 is provided with a connecting disc 40 in the kettle body 1, the connecting disc 40 is provided with three hole blocking pieces 41 corresponding to the leakage holes 37 outward, the bottom of the kettle body 1 is provided with a limiting strip 42 on both sides of each hole blocking piece 41, when one side of the hole blocking piece 41 contacts with one of the limiting strips 42, the hole blocking piece 41 completely blocks the leakage hole 37, when the other side of the hole blocking piece 41 contacts with the other limiting strip 42, the hole blocking piece 41 does not block the leakage hole 37, so that the leakage hole 37 is completely opened.

[0051] The lower end of the transmission sleeve 39 is provided with a through hole (not shown) connected with the rotating shaft 34, the rotating shaft 34 extends into the transmission sleeve 39 and is provided with a driving gear 43, the teeth of the driving gear 43 are smooth arc-shaped, the transmission sleeve 39 is provided with three arc-shaped limiting sliding grooves 44 arranged from inside to outside, each arc-shaped limiting sliding groove 44 is slidably connected with an arc-shaped rack 45 engaged with the outer periphery of the driving gear 43, the teeth of each arc-shaped rack 45 are smooth arc-shaped, and each arc-shaped rack 45 is provided with an elastic member 46 between the side away from the driving gear 43 and the arc-shaped limiting sliding groove 44, the elastic member 46 is an elastic sponge, when there is no resistance, the elastic member 46 pushes the arc-shaped rack 45 to engage with the driving gear 43, so that the driving gear 43 can drive the transmission sleeve 39 and the blocking hole piece 41 to rotate, when the blocking hole piece 41 is blocked and cannot rotate, when the driving gear 43 rotates, the engagement between the driving gear 43 and the arc-shaped rack 45 slips, and the arc-shaped rack 45 slides outward in the arc-shaped limiting sliding groove 44 and presses the elastic member 46.

[0052] The driving gear 43 is connected with a connecting shaft 47 penetrating through the shaft sleeve 38 and rotatably connected with the shaft sleeve 38, the connecting shaft 47 is provided with a stirring shaft 48 at the upper end of the connecting disc 40, and the outer periphery of the stirring shaft 48 is provided with three spiral stirring blades 49, so that when the rotating shaft 34 rotates, the spiral stirring blades 49 can be driven to rotate to stir the solution in the kettle body 1, the spiral direction of the spiral stirring blades 49 is the same as the inclination direction of the aeration pipe 18, and the outer diameters of the stirring shaft 48 and each spiral stirring blade 49 gradually decrease from bottom to top.

[0053] Working principle: before the chemical reaction in the kettle body 1 is carried out, the driving motor 33 drives the rotating shaft 34 to rotate first, the driving gear 43 on the rotating shaft 34 drives the transmission sleeve 39 and the blocking hole piece 41 to rotate through the engagement with the arc-shaped rack 45, so that the blocking hole piece 41 rotates to contact with the limiting strip 42 on one side, at this time, the blocking hole piece 41 blocks the leakage hole 37, preventing the solution in the kettle body 1 from flowing into the discharge pipe 11 through the leakage hole 37, if it is needed to strengthen the stirring in the kettle body 1, the driving motor 33 continues to drive the rotating shaft 34 to rotate, so that the engagement between the driving gear 43 and the arc-shaped rack 45 constantly slips, and the spiral stirring blades 49 on the stirring shaft 48 are driven to rotate to stir the solution at the bottom of the kettle body 1.

[0054] When the reaction in the kettle body 1 is completed, the driving motor 33 drives the rotating shaft 34 to rotate reversely. Since the blocking piece 41 is not blocked by the limiting strip 42 when rotating reversely, the arc-shaped rack 45 is engaged with the driving gear 43 at this time. The rotating shaft 34 rotates to drive the transmission sleeve 39 and the blocking piece 41 to rotate, so that the blocking piece 41 rotates reversely to contact with the other limiting strip 42, and the material leakage hole 37 is opened. The driving motor 33 continues to drive the rotating shaft 34 to rotate reversely, so that the engagement between the driving gear 43 and the arc-shaped rack 45 is disengaged again. The mixed liquid flows into the discharge pipe 11, and the water in the mixed liquid continuously flows out through the filter hole 27 and the filter cloth 28. In the process of continuously conveying the mixed liquid downward by the spiral extrusion blade 35, the water is gradually extruded. Finally, the dried product is discharged from the discharge channel 30, and the pressed water is discharged from the sealed drainage cylinder 31 through the drainage pipe 32.

[0055] It should be noted that the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0056] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application. Any modification or change made by a person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A device for preparing iron phosphate, comprising a kettle body (1), the upper end of the kettle body (1) is provided with a feeding opening (2), the feeding opening (2) is detachably connected with a sealing cover (3), the upper end of the kettle body (1) is provided with a plurality of liquid feeding pipes (4), each liquid feeding pipe (4) is provided with a valve (5), the lower end of the kettle body (1) is provided with a discharging pipe (11), characterized in that, A strip-shaped temperature adjusting shell (12) is arranged on one side of the kettle body (1), an upper portion of the strip-shaped temperature adjusting shell (12) is provided with a suction pump (13), an upper portion of the side wall of the kettle body (1) is communicated with a suction pipe (14) communicated with an inlet end of the suction pump (13), an outlet end of the suction pump (13) is arranged downward in the strip-shaped temperature adjusting shell (12), an electric heating wire (15) is arranged in a lower portion in the strip-shaped temperature adjusting shell (12), a lower end of the strip-shaped temperature adjusting shell (12) is connected with an air outlet pipe (16), a valve (5) is arranged on the air outlet pipe (16), a lower portion of the kettle body (1) is provided with an annular air injection pipe (17) communicated with a free end of the air outlet pipe (16), the annular air injection pipe (17) is provided with a plurality of aeration pipes (18) extending into the kettle body (1), a free end of each aeration pipe (18) is provided with a plurality of aeration small holes (19); A mounting port is arranged on one side of the strip-shaped temperature adjusting shell (12), a temperature guide plate (20) is arranged in the mounting port, the temperature guide plate (20) is provided with a plurality of vertically arranged heat absorbing fins (21) arranged in the strip-shaped temperature adjusting shell (12), each heat absorbing fin (21) is arranged above the electric heating wire (15), the temperature guide plate (20) is provided with a plurality of vertically arranged cold absorbing fins (22) arranged outward, a temperature insulation cover (23) covering the cold absorbing fins (22) is arranged on the outer side of the strip-shaped temperature adjusting shell (12), the upper end of the cold absorbing fin (22) and the top of the temperature insulation cover (23) are left with a gap, a blower (24) is arranged on the upper end of the strip-shaped temperature adjusting shell (12), a vortex cooling pipe (25) is communicated with the outlet end of the blower (24), the hot end of the vortex cooling pipe (25) faces outward, the cold end of the vortex cooling pipe (25) is communicated with the upper end of the temperature insulation cover (23) through a cold guide pipe (26); A plurality of filter holes (27) are arranged on the side wall of the discharge pipe (11), filter cloth (28) is arranged on the outer periphery of the discharge pipe (11), a discharge pipe (29) is communicated with the lower end of the discharge pipe (11), the discharge pipe (29) is communicated with a discharge channel (30) outward, the discharge pipe (11) is sleeved with a sealed drainage cylinder (31) on the outer periphery, the lower end of the sealed drainage cylinder (31) is communicated with a drainage pipe (32) outward, a driving motor (33) is arranged on the lower end of the discharge pipe (29), a rotating shaft (34) connected with the power output shaft of the driving motor (33) is rotatably connected in the discharge pipe (11) and the discharge pipe (29), helical extrusion blades (35) are arranged on the outer periphery of the rotating shaft (34), the pitch of the helical extrusion blades (35) gradually decreases from top to bottom in the discharge pipe (29); The lower end of the kettle body (1) is provided with a rotating hole (36), the bottom of the kettle body (1) is provided with a plurality of material leakage holes (37) in the discharge pipe (29) around the rotating hole (36), the rotating hole (36) is rotationally connected with a shaft sleeve (38), the lower end of the shaft sleeve (38) is provided with a hollow transmission sleeve (39) in the discharge pipe (29) which does not block the material leakage hole (37), the upper end of the shaft sleeve (38) is provided with a connecting disc (40) in the kettle body (1), the connecting disc (40) is provided with a plurality of hole blocking pieces (41) corresponding to the material leakage holes (37) outward, the bottom of the kettle body (1) is provided with a limiting strip (42) on both sides of the hole blocking piece (41), when one side of the hole blocking piece (41) is in contact with one limiting strip (42), the hole blocking piece (41) completely blocks the material leakage hole (37), when the other side of the hole blocking piece (41) is in contact with the other limiting strip (42), the hole blocking piece (41) does not block the material leakage hole (37), so that the material leakage hole (37) is completely opened; The lower end of the transmission sleeve (39) is provided with a through hole rotationally connected with the rotating shaft (34), the rotating shaft (34) is provided with a drive gear (43) extending into the transmission sleeve (39), the transmission sleeve (39) is provided with a plurality of arc-shaped limiting sliding grooves (44) arranged from inside to outside, each arc-shaped limiting sliding groove (44) is slidably connected with an arc-shaped rack (45) engaged with the outer periphery of the drive gear (43), and each arc-shaped rack (45) is provided with an elastic member (46) between the side away from the drive gear (43) and the arc-shaped limiting sliding groove (44). The drive gear (43) is connected with a connecting shaft (47) upwardly penetrating the shaft sleeve (38) and rotationally connected therewith, the connecting shaft (47) is provided with a stirring shaft (48) at the upper end of the connecting disc (40), the outer periphery of the stirring shaft (48) is provided with a plurality of spiral stirring blades (49), and the spiral direction of the spiral stirring blade (49) is the same as the inclination direction of the aeration pipe (18).

2. The iron phosphate preparation apparatus according to claim 1, wherein The upper end of the kettle body (1) is provided with a barometer (6) for detecting the internal air pressure, the upper end of the kettle body (1) is provided with a temperature sensor (7) for detecting the internal temperature, and the upper end of the kettle body (1) is provided with a pH sensor (8) for detecting the internal pH value.

3. The iron phosphate preparation apparatus according to claim 1, wherein The upper end of the kettle body (1) is provided with a breathing pipe (9) upwardly, the breathing pipe (9) is provided with a valve (5), and the upper end of the breathing pipe (9) is communicated with a breathing valve (10).

4. The iron phosphate preparation apparatus according to claim 3, wherein Each valve (5) is an electromagnetic valve.

5. The iron phosphate preparation apparatus according to claim 1, wherein Each aeration pipe (18) is inclined in the same direction around the circumference.

6. The iron phosphate preparation apparatus according to claim 1, wherein The outer diameters of the stirring shaft (48) and each spiral stirring blade (49) gradually decrease from bottom to top.

7. The iron phosphate preparation apparatus according to claim 1, wherein The teeth of the drive gear (43) are smooth circular arcs, and the teeth of each arc-shaped rack (45) are smooth circular arcs.

8. The iron phosphate preparation apparatus according to claim 1, wherein The elastic member (46) is an elastic sponge.

Images