CN214438963U

CN214438963U - Ferric phosphate production measurement feeding device

Info

Publication number: CN214438963U
Application number: CN202022789524.7U
Authority: CN
Inventors: 田高辉; 郭振亚; 崔少奎
Original assignee: Linzhou Futong New Energy Material Technology Co ltd
Current assignee: Linzhou Futong New Energy Material Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-10-22
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a material device is thrown in ferric phosphate production measurement, including the control center and by the cauldron body, the reation kettle that the kettle cover is constituteed, the outer top centre frame of kettle cover is equipped with the phosphoric acid solution case, bilateral symmetry has erect the molten iron sulfite solution case and has sour liquid mixture case of ammonium sulfate, the three all includes the box, be equipped with level sensor in the box upper portion, the outside is equipped with warning light and buzzer siren, the bottom is equipped with the row's material pipe that has the solenoid valve, it is equipped with the inlet pipe that has flow control valve to arrange the material pipe on the kettle cover that corresponds, the internal PH detector that is equipped with of cauldron, the rotation is equipped with the (mixing) shaft, the PH detector, level sensor, the warning light, buzzer siren and solenoid valve all are connected with the control center electricity, the (mixing) shaft top has set firmly conical buffering bulk cargo, it has a plurality of groups stirring rake to distribute on the (mixing) shaft. The utility model discloses can realize that the automatic measurement throws the material, throw that the material flow is controllable and distribute more evenly, throw and have the suggestion after the material is accomplished, and stir more evenly completely, guarantee the preparation efficiency and the quality of iron phosphate.

Description

Ferric phosphate production measurement feeding device

Technical Field

The utility model belongs to the technical field of the iron phosphate production, concretely relates to material device is thrown in iron phosphate production measurement.

Background

The iron phosphate, namely ferric phosphate and ferric orthophosphate, is white and off-white monoclinic crystal powder, is salt generated by the action of ferric salt solution and sodium phosphate, and is mainly used for manufacturing lithium iron phosphate battery materials, catalysts, ceramics and the like.

The common iron phosphate production process is that firstly, an aqueous solution containing sulfuric acid and organic acid is reacted with iron powder to prepare a ferrous sulfate aqueous solution; then, feeding the ferrous sulfate aqueous solution into a reaction kettle, dropwise adding a mixed solution composed of ammonium persulfate, ammonium phosphate and the like into the reaction kettle, adding phosphoric acid, controlling the pH value to be below 3, stirring and mixing at a certain temperature, and reacting; and demagnetizing, filtering, filter-pressing, rinsing, and spray-drying the reacted mixture to obtain the iron phosphate product. When the iron phosphate is prepared by using the reaction kettle, the added ferrous sulfate aqueous solution and the mixed solution consisting of ammonium persulfate and ammonium phosphate are quantitatively added into the reaction kettle after being metered and proportioned according to the actual condition, and the adding amount of the phosphoric acid for adjusting the pH value is strictly controlled according to the actual condition, so that the efficient and high-quality preparation of the iron phosphate can be ensured. However, in the existing actual production, the ingredients are usually weighed manually and then poured into the reaction kettle through the feeding pipe of the reaction kettle according to the feeding sequence, and the feeding mode has the following problems: 1. the manual weighing and feeding operation has the problems of large error, low efficiency, time and labor waste, and the phenomena of missing feeding, wrong feeding or repeated feeding and the like are easy to occur when the materials are fed according to the specified feeding sequence, so that the preparation of the iron phosphate is influenced, and even the whole waste of the raw materials used for the preparation can be caused, so that the materials are seriously wasted; 2. because the raw materials are all liquid, the raw materials are directly poured and easily cause large splashing, and the materials entering the reaction kettle are not uniformly distributed, which is not beneficial to subsequent stirring and mixing; 3. stirring mechanism in the reation kettle has stirring efficiency lower, the effect is relatively poor, stirs the problem of not enough even safety, and especially the material is easy to deposit in the reation kettle bottom, and the bottom material is difficult to be stirred, has the stirring dead angle to cause bottom material and upper material to mix inequality, influenced the efficiency and the quality of preparing of iron phosphate greatly, await the improvement.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a material device is thrown in ferric phosphate production measurement can realize that the automatic measurement of raw materials throws the material, throws that material speed and flow are controllable and distribute more evenly, throws and has the suggestion after the material is accomplished, and the stirring during reaction is also more high-efficient, even and complete to solve above-mentioned problem.

In order to achieve the above object, the utility model adopts the following technical scheme: a metering feeding device for iron phosphate production, which comprises a control center and a reaction kettle consisting of a kettle body and a kettle cover at the top of the kettle body, a phosphoric acid solution tank is arranged at the center of the outer top of the kettle cover, a ferrous sulfate solution tank and an ammonium-ammonium mixed solution tank are symmetrically arranged at two sides of the kettle cover, the phosphoric acid solution tank, the ferrous sulfate solution tank and the ammonium-ammonium mixing tank all comprise tank bodies, the top of each tank body is provided with a material supplementing pipe, the upper part of each tank body is internally provided with a liquid level sensor, the outer side wall of each tank body is provided with a warning lamp and a buzzer alarm, the bottom of each tank body is provided with a material discharging pipe with an electromagnetic valve, the kettle covers corresponding to the discharge pipes are all provided with feed pipes with flow regulating valves, the top ends of the feed pipes are communicated with the bottom ends of the corresponding discharge pipes, a pH detector is arranged in the kettle body, and the pH detector, the liquid level sensor, the warning lamp, the buzzer alarm and the electromagnetic valve are all electrically connected with the control center; the center of the kettle body is vertically and rotatably provided with a stirring shaft, the top end of the stirring shaft is fixedly provided with a conical buffering bulk material block, the tail ends of the feeding pipes corresponding to the molten iron sulfite solution tank and the ammonium sulfate mixing tank are both obliquely arranged towards the conical surface of the buffering bulk material block, and the end ports are parallel to the corresponding conical surfaces; a plurality of groups of stirring paddles are vertically distributed on the stirring shaft, each group of stirring paddles comprises four stirring rods which are circumferentially and uniformly distributed at intervals, a plurality of flow guide holes are distributed on the stirring rods at intervals along the length direction of the stirring rods, the tail ends of the stirring rods are arranged in an upward or downward inclined mode, and the inclined direction between two adjacent stirring rods in the same group is opposite to the inclined direction between two adjacent stirring rods in the upward and downward directions; the stirring assembly is installed to the (mixing) shaft bottom, cauldron body bottom is equipped with the discharging pipe.

Preferably, the stirring assembly comprises a protective cylinder which is arranged on the stirring shaft in a rotating manner, the bottom end of the protective cylinder is fixedly connected to the bottom of the kettle body, four rotating shafts are uniformly distributed on the side wall of the protective cylinder at intervals, a driven bevel gear is fixedly sleeved on one end of the rotating shaft extending into the protective cylinder, a stirring wheel is fixedly sleeved at one end of the rotating shaft extending out of the protective cylinder, a driving bevel gear is fixedly sleeved on the stirring shaft corresponding to the driven bevel gear, and the driven bevel gear is vertically meshed with the driving bevel gear.

Preferably, a temperature sensor is arranged in the kettle body, a jacket is arranged outside the kettle body, a heat insulation layer is arranged on the inner wall of the jacket, a heating resistance wire is wound in the jacket and clings to the outer wall of the kettle body, the control center is arranged outside the jacket, and the temperature sensor and the heating resistance wire are both electrically connected with the control center.

Preferably, the bottom end of the stirring shaft sequentially penetrates through the bottom of the kettle body and the bottom of the jacket to the outside of the jacket and is in transmission connection with a motor, and a protective box is covered outside the motor.

Preferably, the bottom end of the discharge pipe extends out of the jacket and is provided with a discharge valve.

Preferably, a sealing cover is hinged to the top end of the feed supplementing pipe.

Preferably, a pair of supporting legs is symmetrically arranged on the left side and the right side of the outer bottom of the jacket, the bottom ends of one pair of supporting legs are fixedly connected with directional wheels through a damping mechanism, and the bottom ends of the other pair of supporting legs are fixedly connected with brake type universal wheels through a damping mechanism.

Preferably, the damping mechanism comprises a connecting frame, a telescopic rod and a damping spring are connected between the top end and the bottom end of the connecting frame, and the damping spring is sleeved outside the telescopic rod.

The utility model has the advantages that: the utility model relates to a rationally, moreover, the steam generator is simple in structure, through level sensor on the mixed liquid case of ferrous sulfate water solution case and ammonium acid, solenoid valve and control center's setting cooperation, can realize the automatic measurement of the mixed liquid of ferrous sulfate water solution and ammonium acid and throw the material, through level sensor on the phosphoric acid solution case, solenoid valve and pH detector, control center's setting cooperation, can realize the automatic of phosphoric acid and throw the strict control of input equally, guarantee the required acid environment of reaction, the required each raw materials for production's of ferric phosphate preparation measurement is thrown the material operation and all can be realized automaticly, it throws the material to need not artifical manual weighing, the operation is simple and convenient, time and labor saving, efficiency is higher and the error is little, can effectively guarantee to throw the material precision, improve the preparation efficiency and the quality of ferric phosphate. Simultaneously, the warning light can cooperate above-mentioned automatic measurement to throw the material operation, and the automatic start operation after throwing the material and accomplishing to show to the staff that corresponding raw materials for production add and finish, the staff of being convenient for in time carries out follow-up work, prevents to appear the phenomenon such as the hourglass of raw materials for production throw, throw by mistake or throw repeatedly, further guarantees to throw the accuracy of material operation unmistakably, avoids influencing the preparation qualification rate of iron phosphate and the waste of raw materials. In addition, the liquid level sensor, the corresponding buzzer alarm and the control center are matched, so that when the liquid level of the material in the corresponding box body drops to a limit value, the corresponding buzzer alarm can be automatically started to give an alarm, a worker is timely reminded of supplementing the material to the corresponding box body, and the follow-up procedures are guaranteed to be smoothly and stably carried out.

Flow control valve's on each inlet pipe setting, the feed rate of the corresponding liquid raw materials for production of can effective control, guarantee the feeding at the uniform velocity, including the cooperation that sets up of the buffering bulk cargo piece on pivoted (mixing) shaft and top, can carry out effectual buffering and even cloth to corresponding raw materials for production when throwing the material, the material that makes the input distributes more evenly, avoid the material to splash and local concentration is too high, more be favorable to the stirring between the follow-up material to mix, guarantee the efficiency and the quality of iron phosphate preparation.

Pivoted (mixing) shaft and the cooperation that sets up of puddler on it, can realize mixing the stirring of material, water conservancy diversion hole on each puddler can effectively reduce the stirring resistance, improve stirring efficiency, and upper and lower adjacent two puddlers's incline direction is opposite, can make and form the convection current between the material of co-altitude not, can strengthen the stirring effect greatly, further improve stirring efficiency, and the incline direction of two adjacent puddlers of same group stirring rake is also opposite, still can make the material of same height form the motion trail of wave formula, can further strengthen the effect of mixing the material stirring, guarantee the material degree of consistency, more be favorable to improving the efficiency and the quality of iron phosphate preparation. Simultaneously, the setting of stirring subassembly can stir the disturbance to the bottom material, stirs the middle-upper strata with the bottom material stirring, guarantees that the bottom material also can obtain intensive mixing to make and mix more evenly, completely between the material, avoid appearing material deposit and stirring dead angle, thereby improve the efficiency and the quality to material mixing stirring greatly, guarantee the preparation efficiency and the quality of iron phosphate.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the stirring assembly of the present invention;

FIG. 3 is a schematic structural view of the damping mechanism of the present invention;

fig. 4 is a schematic diagram of the control principle of the present invention.

Reference numbers in the figures: 1 is a kettle cover, 2 is a ferrous sulfate aqueous solution tank, 3 is a phosphoric acid aqueous solution tank, 4 is an ammonium acid and ammonium mixed liquid tank, 5 is a box body, 6 is a sealing cover, 7 is a material supplementing pipe, 8 is a liquid level sensor, 9 is a warning lamp, 10 is a buzzer alarm, 11 is a material discharging pipe, 12 is an electromagnetic valve, 13 is a material inlet pipe, 14 is a flow regulating valve, 15 is a pH detector, 16 is a kettle body, 17 is a buffering bulk material block, 18 is a stirring shaft, 19 is a stirring rod, 20 is a flow guide hole, 21 is a protective barrel, 22 is a driven bevel gear, 23 is a rotating shaft, 24 is a turning stirring wheel, 25 is a driving bevel gear, 26 is a temperature sensor, 27 is a jacket, 28 is a heat insulation layer, 29 is a heating resistance wire, 30 is a control center, 31 is a motor, 32 is a protective box, 33 is a material outlet pipe, 34 is a discharge valve, 35 is a supporting leg, 36 is a damping mechanism, 37 is a directional wheel, 38 is a universal wheel, and 39 is a connecting frame, 40 is a telescopic rod, and 41 is a damping spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 4, a metering and feeding device for iron phosphate production comprises a control center 30 and a reaction kettle consisting of a kettle body 16 and a kettle cover 1 at the top of the kettle body 16. A phosphoric acid solution tank 3 is arranged at the center of the outer top of the kettle cover 1, and a ferrous sulfate iron solution tank 2 and an ammonium-ammonium mixed solution tank 4 are symmetrically arranged at two sides of the kettle cover. Phosphoric acid solution case 3, the molten iron sulfite solution case 2 and the liquid case is mixed to the acid ammonium all include box 5, the top of box 5 is equipped with material supplementing pipe 7, be equipped with level sensor 8 in the upper portion, be equipped with warning light 9 and buzzer siren 10 on the outside lateral wall, the bottom is equipped with row's material pipe 11 that has solenoid valve 12, it all is equipped with the inlet pipe 13 that has flow control valve 14 on the kettle cover 1 that row's material pipe 11 corresponds, the top of inlet pipe 13 all communicates with the bottom that row's material pipe 11 that corresponds. A pH detector 15 is arranged in the kettle body 16, and the pH detector 15, the liquid level sensor 8, the warning lamp 9, the buzzer alarm 10 and the electromagnetic valve 12 are all electrically connected with a control center 30. During the use, through level sensor 8 on the mixed liquid case of ferrous sulfate aqueous solution 2 and ammonium acid 4, solenoid valve 12 and control center 30 set up the cooperation, can realize the automatic measurement of the mixed liquid of ferrous sulfate aqueous solution and ammonium acid respectively and throw the material, through level sensor 8 on the phosphoric acid solution case 3, solenoid valve 12 and pH detector 15, control center 30 sets up the cooperation, can realize the automatic strict control of throwing the material of phosphoric acid and input volume equally, guarantee the required acid environment of reaction, the required each raw materials for production's of ferric phosphate preparation measurement is thrown the material operation and all can be realized automaticly, need not artifical manual weighing and throw the material, easy operation is convenient, time saving and labor saving, efficiency is higher and the error is little, can effectively guarantee to throw the material precision, the preparation efficiency and the quality of improvement ferric phosphate. Simultaneously, the warning light 9 can cooperate above-mentioned automatic measurement to throw the material operation, and the automatic start operation after throwing the material and accomplishing to show to the staff that corresponding raw materials for production add and finish, the staff of being convenient for in time carries out follow-up work, prevents to appear the phenomenon such as the hourglass of raw materials for production throw, throw by mistake or throw repeatedly, further guarantees to throw the accuracy of material operation unmistakably, avoids influencing the preparation qualification rate of iron phosphate and the waste of raw materials. In addition, the liquid level sensor 8, the corresponding buzzer alarm 10 and the control center 30 are matched, so that when the liquid level of the material in the corresponding box body 5 is lowered to a limit value, the corresponding buzzer alarm 10 is automatically started to give an alarm, a worker is timely reminded of supplementing the material to the corresponding box body 5, and the follow-up procedures are guaranteed to be smoothly and stably carried out. The control center 30 can be a conventional PLC controller;

the center of the kettle body 16 is vertically and rotatably provided with a stirring shaft 18, the top end of the stirring shaft 18 is fixedly provided with a conical buffer bulk material block 17, the tail ends of the feeding pipes 13 corresponding to the ferrous sulfate aqueous solution tank 2 and the ammonium sulfate mixed liquid tank 4 are both obliquely arranged towards the conical surface of the buffer bulk material block 17, and the end ports of the tail ends are parallel to the corresponding conical surfaces, so that when the materials are fed, the arrangement of the flow regulating valves 14 on the feeding pipes 13 can effectively control the feeding speed of the corresponding liquid production raw materials and ensure uniform feeding, and the arrangement and matching of the rotating stirring shaft 18 and the buffer bulk material block 17 at the top end thereof can effectively buffer and uniformly distribute the corresponding production raw materials, so that the fed materials are more uniformly distributed, the materials are prevented from splashing and the local concentration is overhigh, the stirring and mixing among the subsequent materials are more facilitated, and the efficiency and the quality of the iron phosphate preparation are ensured;

it has a plurality of groups of stirring rakes to be distributed about being on (mixing) shaft 18, and every group stirring rake all includes four puddlers 19 that are circumference interval equipartition, and it has a plurality of water conservancy diversion holes 20 to distribute along its length direction interval on the puddler 19, and the tail end of puddler 19 all upwards or the downward sloping setting, and the incline direction between two adjacent puddlers 19 of same group and the incline direction between two adjacent puddlers 19 of upper and lower are all opposite. The bottom of the stirring shaft 18 is provided with a stirring component. During the reaction, the pivoted (mixing) shaft 18 and the cooperation that sets up of last puddler 19 can realize mixing the stirring of material, and the water conservancy diversion hole 20 on each puddler 19 can effectively reduce stirring resistance, improves stirring efficiency, and the inclination opposite direction of two puddlers 19 adjacent from top to bottom can make and form the convection current between the material of co-altitude not, can strengthen stirring effect greatly, further improves stirring efficiency. And the inclination directions of two adjacent stirring rods 19 of the same group of stirring paddles are also opposite, so that the materials with the same height can form a wavy movement track, the effect of stirring and mixing the materials can be further enhanced, the uniformity of the materials is ensured, and the efficiency and the quality of iron phosphate preparation are more favorably improved. Simultaneously, the setting of stirring subassembly can stir the disturbance to the bottom material, stirs the middle-upper strata with the bottom material stirring, guarantees that the bottom material also can obtain intensive mixing to make and mix more evenly, completely between the material, avoid appearing material deposit and stirring dead angle, thereby improve the efficiency and the quality to material mixing stirring greatly, guarantee the preparation efficiency and the quality of iron phosphate. The bottom of the kettle body 16 is provided with a discharge pipe 33 for discharging.

In this embodiment, the stirring component includes a protective tube 21 rotatably sleeved on the stirring shaft 18, and the bottom end of the protective tube 21 is fixedly connected to the inner bottom of the kettle 16. Four groups of rotating shafts 23 which are rotatably arranged are uniformly distributed on the side wall of the protective cylinder 21 at intervals on the circumference, one end of each rotating shaft 23, which extends into the protective cylinder 21, is fixedly sleeved with a driven bevel gear 22, and the other end, which extends out of the protective cylinder 21, is fixedly sleeved with a stirring wheel 24. Fixed cover is equipped with drive bevel gear 25 on the (mixing) shaft 18 that driven bevel gear 22 corresponds, driven bevel gear 22 is connected with the perpendicular meshing of drive bevel gear 25, when making (mixing) shaft 18 pivoted, the drive bevel gear 25 synchronous rotation that fixed cover established on it, through gear drive, alright drive each driven bevel gear 22 and rotate, and then drive corresponding stirring wheel 24 and rotate, the disturbance is stirred in the realization stirring to the bottom material, stir the bottom material to the upper middle level, guarantee that the bottom material also can obtain intensive mixing, thereby make to mix more evenly between the material, completely, avoid appearing material deposit and stirring dead angle, thereby improve the efficiency and the quality of mixing the stirring to the material greatly, guarantee the preparation efficiency and the quality of iron phosphate.

In this embodiment, a temperature sensor 26 is disposed in the kettle 16, a jacket 27 is disposed outside the kettle, a heat insulating layer 28 is disposed on the inner wall of the jacket 27, and a heating resistance wire 29 is wound around the outer wall of the kettle 16 in the jacket 27. The control center 30 is arranged outside the jacket 27, and the temperature sensor 26 and the heating resistance wire 29 are both electrically connected with the control center 30, so that when the reactor is used, the heating resistance wire 29 is electrified to generate heat, the reactor body 16 can be heated, and the temperature condition required by the preparation of the iron phosphate is provided. Meanwhile, the heating resistance wire 29, the temperature sensor 26 and the control center 30 are matched, so that automatic temperature control can be realized, the internal temperature of the kettle body 16 can be stably maintained in a temperature range required by the preparation of the iron phosphate, and the preparation quality of the iron phosphate is ensured. The heat insulation layer 28 can be used for heat insulation of the kettle body 16 and reducing heat loss, so that energy consumption of heating and heat preservation is reduced, production cost is saved, and the kettle is made of conventional heat insulation cotton.

In this embodiment, the bottom end of the stirring shaft 18 sequentially passes through the bottom of the kettle 16 and the bottom of the jacket 27 to the outside of the jacket 27 and is connected with the motor 31 in a transmission manner, so that when the stirring device is used, the stirring shaft 18 can be driven to rotate by using the power provided by the motor 31. The motor 31 is externally covered with a protective case 32 for protecting the motor 31. The bottom end of the discharge pipe 33 extends out of the jacket 27 and is provided with a discharge valve 34, so that the discharge is more conveniently controlled. The top end of the material supplementing pipe 7 is hinged with a sealing cover 6, so that the sealing performance of the box body 5 is guaranteed, and the condition that the preparation quality of subsequent iron phosphate is influenced by external pollution of corresponding production raw materials is avoided.

In this embodiment, the equal symmetry is equipped with a pair of supporting leg 35 on the left and right sides of pressing from both sides cover 27 outer bottom, and 36 fixedly connected with directional wheel 37 of damper is passed through to the bottom of one of them pair of supporting leg 35, another 36 fixedly connected with brake formula universal wheel 38 of damper is passed through to the bottom of supporting leg 35 for whole reation kettle can walk in a flexible way and remove, be convenient for change reation kettle's position according to actual demand, the preparation of iron phosphate is carried out in the cooperation, whole reation kettle's use flexibility and convenience can be improved greatly. Damper 36 is connected with telescopic link 40 and damping spring 41 including connecting frame 39 between the top of connecting frame 39, the end both ends, and damping spring 41 cover is established in the outside of telescopic link 40 for through telescopic link 40 and damping spring 41's cooperation, can improve whole reation kettle's buffering damping performance, the stationarity when guaranteeing reation kettle and remove alleviates the damage that causes reation kettle and inside, improves whole reation kettle's life.

The utility model discloses a theory of operation: the utility model discloses when using, switch on earlier and press from both sides the circuit of the heating resistor silk 29 in the cover 27, heat the intensification to the cauldron body 16, the inside temperature of the 26 real-time detection cauldron bodies 16 of in-process temperature sensor to give control center 30 with temperature information transfer. When the temperature information received by the control center 30 reaches the set required temperature upper limit value, the control center 30 can automatically control the circuit of the heating resistance wire 29 to be disconnected, the temperature rise is stopped, and at the moment, all production raw materials can be added according to the specified sequence, specifically: the flow control valves 14 on the feeding pipes 13 are firstly adjusted, and the opening degree of each flow control valve 14 is adjusted according to actual conditions. Then, the electromagnetic valve 12 on the discharge pipe 11 corresponding to the molten iron sulfite tank 2 is opened to charge the ferrous sulfate aqueous solution. In the process, the motor 31 operates to drive the stirring shaft 18 and the stirring rod 19 and the buffering bulk material block 17 thereon to rotate, so as to buffer and uniformly distribute the fed materials. Meanwhile, a liquid level sensor in the ferrous sulfate aqueous solution tank 2 detects the liquid level information of the ferrous sulfate aqueous solution in real time and transmits the liquid level information to the control center 30, when the reduction amount of the liquid level information received by the control center 30 reaches the set required addition amount of the ferrous sulfate aqueous solution, the control center 30 can automatically control the corresponding electromagnetic valve 12 to be closed, the feeding of the ferrous sulfate aqueous solution is stopped, and the warning lamp 9 on the corresponding tank body 5 is started to display that the feeding of the raw materials is completed. Then, the control center 30 can continuously and automatically control to open the electromagnetic valve 12 on the discharge pipe 11 corresponding to the ammonium-ammonium mixed liquid box 4, and the automatic metering and feeding of the ammonium-ammonium mixed liquid are carried out according to the steps.

After the ammonium acid mixed liquid is fed, the stirring shaft 18 continues to rotate, the stirring rod 19 and the stirring assembly on the stirring shaft continue to stir and mix the materials, in the process, the electromagnetic valve 12 on the discharge pipe 11 corresponding to the phosphoric acid solution tank 3 is opened, phosphoric acid is added into the kettle body 16 to adjust the pH value, meanwhile, the pH detector 15 works to detect the acidity and alkalinity in the kettle body 16 in real time, and the pH value is transmitted to the control center 30. When the pH value received by the control center 30 is lower than the set value, the control center 30 can automatically control to close the corresponding electromagnetic valve 12, stop the feeding of phosphoric acid, avoid phosphoric acid waste, and ensure the acidic environment required by the reaction. In addition, in the reaction process, when the temperature information received by the control center 30 is lower than the set lower limit value of the required temperature, the control center 30 can automatically control to switch on the circuit of the heating resistance wire 29, continue heating and raise the temperature, and switch off and stop heating again when the temperature information reaches the upper limit value, so that the automatic control of the temperature is realized, the internal temperature of the kettle body 16 is stably maintained in the temperature range required by the preparation of the modified iron phosphate, and the preparation quality of the iron phosphate is ensured. After the preparation is finished, the discharge valve 34 on the discharge pipe 33 is opened, and the material is discharged through the discharge pipe 33.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A metering feeding device for iron phosphate production, which comprises a control center and a reaction kettle consisting of a kettle body and a kettle cover at the top of the kettle body, it is characterized in that a phosphoric acid solution tank is arranged at the center of the outer top of the kettle cover, a ferrous sulfate solution tank and an ammonium-ammonium mixed solution tank are symmetrically arranged at two sides of the kettle cover, the phosphoric acid solution tank, the ferrous sulfate solution tank and the ammonium-ammonium mixing tank all comprise tank bodies, the top of each tank body is provided with a material supplementing pipe, the upper part of each tank body is internally provided with a liquid level sensor, the outer side wall of each tank body is provided with a warning lamp and a buzzer alarm, the bottom of each tank body is provided with a material discharging pipe with an electromagnetic valve, the kettle covers corresponding to the discharge pipes are all provided with feed pipes with flow regulating valves, the top ends of the feed pipes are communicated with the bottom ends of the corresponding discharge pipes, a pH detector is arranged in the kettle body, and the pH detector, the liquid level sensor, the warning lamp, the buzzer alarm and the electromagnetic valve are all electrically connected with the control center; the center of the kettle body is vertically and rotatably provided with a stirring shaft, the top end of the stirring shaft is fixedly provided with a conical buffering bulk material block, the tail ends of the feeding pipes corresponding to the molten iron sulfite solution tank and the ammonium sulfate mixing tank are both obliquely arranged towards the conical surface of the buffering bulk material block, and the end ports are parallel to the corresponding conical surfaces; a plurality of groups of stirring paddles are vertically distributed on the stirring shaft, each group of stirring paddles comprises four stirring rods which are circumferentially and uniformly distributed at intervals, a plurality of flow guide holes are distributed on the stirring rods at intervals along the length direction of the stirring rods, the tail ends of the stirring rods are arranged in an upward or downward inclined mode, and the inclined direction between two adjacent stirring rods in the same group is opposite to the inclined direction between two adjacent stirring rods in the upward and downward directions; the stirring assembly is installed to the (mixing) shaft bottom, it establishes at the epaxial protective cylinder of stirring including rotating the cover to turn over the stirring assembly, protective cylinder bottom fixed connection is on the internal bottom of cauldron, it has the pivot that four groups rotated the setting to be the circumference interval equipartition on the protective cylinder lateral wall, the pivot stretches into one of protective cylinder and serves fixed cover and be equipped with driven bevel gear, stretch out the one end fixed cover of protective cylinder and have connect and turn over the stirring wheel, the fixed cover that is equipped with initiative bevel gear on the (mixing) shaft that driven bevel gear corresponds, driven bevel gear is connected with the perpendicular meshing of initiative bevel gear, cauldron body bottom is equipped with the discharging pipe.

2. The iron phosphate production metering and feeding device according to claim 1, wherein a temperature sensor is arranged in the kettle body, a jacket is arranged outside the kettle body, a heat insulation layer is arranged on the inner wall of the jacket, a heating resistance wire is wound in the jacket and clings to the outer wall of the kettle body, the control center is arranged outside the jacket, and the temperature sensor and the heating resistance wire are both electrically connected with the control center.

3. The iron phosphate production metering and feeding device according to claim 2, wherein the bottom end of the stirring shaft sequentially penetrates through the bottom of the kettle body and the bottom of the jacket to the outside of the jacket and is connected with a motor in a transmission manner, and a protective box is covered outside the motor.

4. The iron phosphate production metering and feeding device according to claim 2, wherein the bottom end of the discharge pipe extends out of the jacket and is provided with a discharge valve.

5. The iron phosphate production metering and feeding device according to claim 1, wherein a sealing cover is hinged to the top end of the feeding pipe.

6. The iron phosphate production metering and feeding device according to claim 2, wherein a pair of supporting legs are symmetrically arranged on the left side and the right side of the outer bottom of the jacket, the bottom ends of one pair of supporting legs are fixedly connected with an orientation wheel through a damping mechanism, and the bottom ends of the other pair of supporting legs are fixedly connected with a brake type universal wheel through a damping mechanism.

7. The iron phosphate production metering and feeding device according to claim 6, wherein the damping mechanism comprises a connecting frame, a telescopic rod and a damping spring are connected between the top end and the bottom end of the connecting frame, and the damping spring is sleeved outside the telescopic rod.