Phosphoric acid graded production device

Abstract

The utility model relates to the technical field of phosphoric acid production, in particular to a phosphoric acid graded production device which comprises a U-shaped support, a plurality of first installation openings which are distributed at equal intervals in the left-right direction are formed in the top of the U-shaped support, a reaction tank is installed on each first installation opening, and an electric heating plate is arranged between the outer wall and the inner wall of each reaction tank. A temperature sensor and a PH sensor are arranged on the inner wall of each reaction tank, the tops of the multiple reaction tanks are jointly connected with a top plate, and a plurality of feeding pipes are arranged at the top of the top plate. According to the phosphoric acid graded production device, the plurality of reaction tanks are respectively filled with crushed phosphate ores with different iron contents and a catalyst with the same content, so that phosphoric acid with different iron contents is obtained, multi-stage phosphoric acid production is realized, the interior of the reaction tanks is heated by the electric heating plates, and the catalyst and the crushed phosphate ores react favorably at a proper temperature; the temperature sensor and the PH sensor are used for detecting the temperature and PH value in the reaction tank, and it is ensured that the catalyst and the crushed phosphate ore react at the proper temperature and PH value.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphoric acid production, in particular to a phosphoric acid grading production device. Background Art

[0002] Industrial-grade phosphoric acid is a key chemical raw material used in a wide range of industries, including agriculture, food processing, pharmaceuticals, and metallurgy. The purity and quality of phosphoric acid directly impact its performance in these applications.

[0003] Iron is a common impurity in phosphoric acid production, typically introduced from the raw iron ore and the catalysts used in the catalytic reaction. Wear and tear of production equipment and pipelines can also introduce iron impurities. The iron content, particularly in industrial-grade phosphoric acid, significantly impacts its applications and performance. For example, iron impurities exceeding a certain concentration are unacceptable in food-grade or pharmaceutical-grade phosphoric acid, potentially violating safety standards and potentially impacting consumer health.

[0004] Existing phosphoric acid production technology is typically designed to produce a single standard of iron content. Traditional production equipment design and operating parameters, such as temperature control, acid concentration, and reaction time, are typically fixed, making it difficult to adjust the iron content to produce phosphoric acid of varying purity levels within the same production cycle. This single-standard production model means that to obtain phosphoric acid with varying iron contents, manufacturers must perform multiple production processes or use multiple sets of equipment, significantly increasing production costs and resource consumption.

[0005] This inflexible production method became a pressing issue, especially as market demands diversified and customers required varying levels of iron phosphate. The lack of a production facility capable of dynamically adjusting and simultaneously producing phosphoric acid with multiple iron levels meant low production efficiency and an inability to flexibly respond to market changes and specific customer needs. This led us to develop a graded phosphoric acid production facility. Utility Model Content

[0006] The purpose of the present invention is to provide a phosphoric acid classification production device to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A phosphoric acid grading production device includes a U-shaped bracket, wherein the top of the U-shaped bracket is provided with multiple first mounting ports arranged equidistantly from left to right, each first mounting port is installed with a reaction tank, an electric heating plate is provided between the outer wall and the inner wall of the reaction tank, the inner wall of the reaction tank is provided with a temperature sensor and a pH sensor, the bottom end of the reaction tank is provided with a discharge pipe with a valve, and an exhaust pipe with a solenoid valve is provided on the outer wall of the reaction tank near the rear top, the exhaust pipes of the multiple reaction tanks are connected to an exhaust main pipe, the multiple reaction tanks are respectively loaded with crushed phosphate rock with different iron contents and the same content of catalyst, thereby obtaining phosphoric acid with different iron contents and realizing multi-stage phosphoric acid production, the electric heating plate heats the interior of the reaction tank, and the appropriate temperature is conducive to the reaction between the catalyst and the crushed phosphate rock, the temperature sensor and the pH sensor are used to detect the temperature and pH value in the reaction tank, ensuring that the catalyst and the crushed phosphate rock react at the appropriate temperature and pH value, the exhaust pipe is used to discharge exhaust gas in the reaction tank and allow the exhaust gas to enter the exhaust main pipe, and the exhaust gas is guided to the exhaust gas treatment equipment through the exhaust main pipe to avoid polluting the environment;

[0009] The tops of the multiple reaction tanks are commonly connected to a top plate, and a plurality of feeding pipes arranged equidistantly on the left and right are provided on the top of the top plate near the front side. The tops of the feeding pipes are threadedly connected to sealing covers. The multiple feeding pipes are respectively connected to the multiple reaction tanks and are used to feed crushed phosphate ore and catalyst into the reaction tanks. The tops of the multiple acidic compound injection pipes are respectively connected to the multiple reaction tanks and are arranged equidistantly on the left and right. The tops of the multiple acidic compound injection pipes are commonly connected to a first liquid guide pipe. The multiple acidic compound injection pipes are respectively connected to the multiple reaction tanks. The first liquid guide pipe is connected to the acidic compound supply device. The acidic compound injection pipe injects the acidic compound into the reaction tank to prevent the phosphoric acid solution from being too alkaline.

[0010] A plurality of alkaline compound injection pipes are also provided at the top and near the rear side of the top plate, and are arranged equidistantly on the left and right sides. The acidic compound injection pipe and the alkaline compound injection pipe are both provided with solenoid valves. The top ends of the plurality of alkaline compound injection pipes are commonly connected to a second liquid guide pipe. The plurality of alkaline compound injection pipes are respectively connected to a plurality of reaction tanks. The second liquid guide pipe is connected to the alkaline compound supply device. The alkaline compound injection pipe injects the alkaline compound into the reaction tank to prevent the phosphoric acid solution from being too acidic.

[0011] The bottom of the top plate is rotatably connected to a plurality of rotating shafts that are equidistantly arranged left and right. The plurality of rotating shafts are respectively located in a plurality of reaction tanks. The outer wall of the rotating shaft is provided with a plurality of stirring blades that are equidistantly arranged up and down. The top of the top plate is provided with a driving assembly for driving the plurality of rotating shafts to rotate. The driving assembly drives the plurality of rotating shafts to rotate synchronously, so that the rotating shaft drives the plurality of stirring blades to rotate, so that the stirring blades stir the crushed phosphate ore and catalyst in the reaction tank.

[0012] Preferably, an annular limiting block is provided in the middle of the outer wall of the reaction tank, and the bottom of the annular limiting block abuts against the top of the U-shaped bracket to position the reaction tank.

[0013] Preferably, a support plate is provided between the left and right sides of the inner wall of the U-shaped bracket, and a second mounting opening is provided on the top of the support plate for the bottom ends of multiple reaction tanks to pass through, which provides secondary support for the reaction tanks and improves the stability of the reaction tanks.

[0014] Preferably, support rods are provided at the top of the U-shaped bracket and near the four corners, and fastening bolts are connected to the top of the top plate and near the four corners. The threaded ends of the fastening bolts pass through the top of the top plate and are threadedly connected to the top of the support rods to fix the position of the top plate.

[0015] Preferably, a plurality of annular sleeves are provided at the bottom of the top plate and are arranged equidistantly on the left and right sides. The plurality of annular sleeves are respectively sleeved on the tops of the plurality of reaction tanks to seal the tops of the reaction tanks.

[0016] Preferably, the driving assembly includes a rectangular shield fixedly connected to the top of the top plate, a rotating rod is rotatably connected between the left and right sides of the inner wall of the rectangular shield, a plurality of positioning blocks are provided on the top of the inner wall of the rectangular shield and are equidistantly arranged on the left and right, the rotating rod is rotatably connected to the plurality of positioning blocks, and since the length of the rotating rod is relatively long, the plurality of positioning blocks can ensure the stable rotation of the rotating rod, a servo motor for driving the rotating rod to rotate is provided on the left side of the rectangular shield, and a plurality of active bevel gears are provided on the outer wall of the rotating rod and are equidistantly arranged on the left and right, the servo motor works by an external power supply, and the rotating rod is driven to rotate by the servo motor, and the rotating rod drives the plurality of active bevel gears to rotate.

[0017] Preferably, the top end of the rotating shaft passes through the bottom of the top plate and is coaxially connected to a driven bevel gear. The driving bevel gear meshes and rotates with the driven bevel gear. The connection between the rotating shaft and the top plate is connected by a shaft seal. The driving bevel gear drives the driven bevel gear to rotate, thereby driving the rotating shaft to rotate.

[0018] Preferably, a controller and a temperature controller are provided at the top of the U-shaped bracket and near the middle of the front edge. The servo motor, the solenoid valve on the exhaust pipe, the solenoid valve on the acidic compound injection pipe, the solenoid valve on the alkaline compound injection pipe, and the pH sensor are electrically connected to the controller through wires, respectively. The controller controls the start and stop of the servo motor and controls the solenoid valves on the multiple exhaust pipes to open and close in sequence to avoid simultaneous opening and causing exhaust gas to enter other reaction tanks. The electrical signal detected by the pH sensor is transmitted to the controller through a wire. The controller analyzes and processes the electrical signal input by the pH sensor. When the alkalinity of the phosphoric acid solution is detected to be too high, the solenoid valve on the acidic compound injection pipe is controlled to open to inject the acidic compound into the reaction tank. Conversely, the solenoid valve on the alkaline compound injection pipe is controlled to open to inject the alkaline compound into the reaction tank.

[0019] The electric heating plate and the temperature sensor are electrically connected to a temperature controller through wires, and the temperature controller controls the heating temperature of the plurality of reaction tanks respectively.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This phosphoric acid grading production device has multiple reaction tanks filled with crushed phosphate rock with different iron contents and catalysts with the same content, thereby obtaining phosphoric acid with different iron contents and realizing multi-stage phosphoric acid production. The electric heating plate heats the interior of the reaction tank. The appropriate temperature is conducive to the reaction between the catalyst and the crushed phosphate rock. The temperature sensor and pH sensor are used to detect the temperature and pH value in the reaction tank to ensure that the catalyst and the crushed phosphate rock react at the appropriate temperature and pH value.

[0022] 2. The phosphoric acid grading production device uses a servo motor to drive a rotating rod to rotate, which drives multiple driving bevel gears to rotate. The driving bevel gears drive the driven bevel gears to rotate, thereby driving the rotating shaft to rotate. The rotating shaft drives multiple stirring blades to rotate, so that the stirring blades stir the crushed phosphate rock and catalyst in the reaction tank, thereby improving the reaction efficiency.

[0023] 3. In this phosphoric acid grading production device, the controller controls the start and stop of the servo motor and controls the solenoid valves on multiple exhaust pipes to open and close in sequence to prevent exhaust gas from entering other reaction tanks due to simultaneous opening. The electrical signal detected by the pH sensor is transmitted to the controller through a wire. The controller analyzes and processes the electrical signal input by the pH sensor. When the alkalinity of the phosphoric acid solution is detected to be too high, the controller controls the solenoid valve on the acidic compound injection pipe to open and inject the acidic compound into the reaction tank. Conversely, the controller controls the solenoid valve on the alkaline compound injection pipe to open and inject the alkaline compound into the reaction tank.

[0024] 4. The exhaust pipe of the phosphoric acid grading production device is used to discharge the waste gas in the reaction tank and allow the waste gas to enter the exhaust main pipe, which then guides the waste gas to the waste gas treatment equipment to avoid polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0026] Figure 2 This is a schematic diagram of the overall structure of the utility model from a second perspective;

[0027] Figure 3 This is a schematic diagram of the assembly structure of the U-shaped bracket and the top plate in the present invention;

[0028] Figure 4 This is one of the partial structural diagrams of the utility model;

[0029] Figure 5 This is a schematic diagram of the assembly structure of the top plate and the drive assembly in the present utility model;

[0030] Figure 6 This is the second schematic diagram of the partial structure of the utility model;

[0031] Figure 7 This is a schematic diagram of the assembly structure of the reaction tank and the exhaust manifold in the present utility model;

[0032] Figure 8 It is a schematic diagram of the cross-sectional structure of the reaction tank in the present utility model.

[0033] In the figure: 1. U-shaped bracket; 10. First mounting port; 11. Support rod; 2. Reactor; 20. Discharge pipe; 21. Annular limit block; 22. Exhaust pipe; 3. Top plate; 30. Feed pipe; 31. Acid compound injection pipe; 32. Alkaline compound injection pipe; 33. Annular sleeve; 4. Drive assembly; 40. Rectangular shield; 41. Rotating rod; 42. Driving bevel gear; 43. Servo motor; 44. Positioning block; 5. Rotating shaft; 50. Driven bevel gear; 51. Stirring blade; 6. Support plate; 60. Second mounting port; 7. Controller; 8. Temperature controller; 9. Fastening bolt; 12. First liquid guide pipe; 13. Second liquid guide pipe; 14. Exhaust main pipe; 15. Electric heating plate; 16. Temperature sensor; 17. pH sensor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] See also Figures 1-8 , the utility model provides a technical solution:

[0037] A phosphoric acid grading production device includes a U-shaped bracket 1, a plurality of first mounting ports 10 equidistantly arranged on the top of the U-shaped bracket 1, a reaction tank 2 is installed on each first mounting port 10, an electric heating plate 15 is provided between the outer wall and the inner wall of the reaction tank 2, a temperature sensor 16 and a pH sensor 17 are provided on the inner wall of the reaction tank 2, a discharge pipe 20 with a valve is provided at the bottom end of the reaction tank 2, an exhaust pipe 22 with a solenoid valve is provided on the outer wall of the reaction tank 2 near the top of the rear side, the exhaust pipes 22 of the plurality of reaction tanks 2 are connected to an exhaust main pipe 14, and the plurality of reaction tanks 2 are respectively equipped with different contents. Crushed phosphate ore with the same amount of iron and catalyst with the same content, thereby obtaining phosphoric acid with different iron contents and realizing multi-stage phosphoric acid production. The electric heating plate 15 heats the interior of the reaction tank 2. The appropriate temperature is conducive to the reaction between the catalyst and the crushed phosphate ore. The temperature sensor 16 and the pH sensor 17 are used to detect the temperature and pH value in the reaction tank 2 to ensure that the catalyst and the crushed phosphate ore react at the appropriate temperature and pH value. The exhaust pipe 22 is used to discharge the exhaust gas in the reaction tank 2 and allow the exhaust gas to enter the exhaust main pipe 14. The exhaust gas is guided to the exhaust gas treatment equipment through the exhaust main pipe 14 to avoid polluting the environment.

[0038] The tops of the multiple reaction tanks 2 are commonly connected to a top plate 3. A plurality of feeding pipes 30 are arranged equidistantly on the left and right at the top of the top plate 3 and near the front side. The tops of the feeding pipes 30 are threadedly connected to sealing covers. The multiple feeding pipes 30 are respectively connected to the multiple reaction tanks 2 and are used to feed crushed phosphate ore and catalyst into the reaction tanks 2. A plurality of acidic compound injection pipes 31 are arranged equidistantly on the left and right at the top of the top plate 3 and near the rear side. The tops of the multiple acidic compound injection pipes 31 are commonly connected to a first liquid guide pipe 12. The multiple acidic compound injection pipes 31 are respectively connected to the multiple reaction tanks 2. The first liquid guide pipe 12 is connected to the acidic compound supply device. The acidic compound injection pipes 31 inject the acidic compound into the reaction tank 2 to prevent the phosphoric acid solution from being too alkaline.

[0039] A plurality of alkaline compound injection pipes 32 are also provided at the top and near the rear of the top plate 3, and are arranged equidistantly from side to side. Both the acidic compound injection pipe 31 and the alkaline compound injection pipe 32 are provided with solenoid valves. The top ends of the plurality of alkaline compound injection pipes 32 are connected to a second liquid guide pipe 13. The plurality of alkaline compound injection pipes 32 are respectively connected to the plurality of reaction tanks 2. The second liquid guide pipe 13 is connected to the alkaline compound supply device. The alkaline compound injection pipes 32 inject the alkaline compound into the reaction tank 2 to prevent the phosphoric acid solution from being too acidic.

[0040] The bottom of the top plate 3 is rotatably connected to a plurality of rotating shafts 5 that are equidistantly arranged left and right. The plurality of rotating shafts 5 are respectively located in a plurality of reaction tanks 2. The outer wall of the rotating shaft 5 is provided with a plurality of stirring blades 51 that are equidistantly arranged up and down. The top of the top plate 3 is provided with a driving assembly 4 for driving the plurality of rotating shafts 5 to rotate. The driving assembly 4 drives the plurality of rotating shafts 5 to rotate synchronously, so that the rotating shafts 5 drive the plurality of stirring blades 51 to rotate, so that the stirring blades 51 stir the crushed phosphate ore and catalyst in the reaction tank 2.

[0041] In this embodiment, an annular limiting block 21 is provided in the middle of the outer wall of the reaction tank 2 , and the bottom of the annular limiting block 21 abuts against the top of the U-shaped bracket 1 , thereby positioning the reaction tank 2 .

[0042] Specifically, a support plate 6 is provided between the left and right sides of the inner wall of the U-shaped bracket 1. A second mounting opening 60 is provided on the top of the support plate 6 for the bottom ends of multiple reaction tanks 2 to pass through, which provides secondary support for the reaction tanks 2 and improves the stability of the reaction tanks 2.

[0043] Furthermore, support rods 11 are provided at the top of the U-shaped bracket 1 and near the four corners, and fastening bolts 9 are connected to the top of the top plate 3 and near the four corners. The threaded end of the fastening bolt 9 passes through the top of the top plate 3 and is threadedly connected to the top of the support rods 11 to fix the position of the top plate 3.

[0044] Furthermore, a plurality of annular sleeves 33 equidistantly arranged on the left and right sides are provided at the bottom of the top plate 3 . The plurality of annular sleeves 33 are respectively sleeved on the tops of the plurality of reaction tanks 2 to seal the tops of the reaction tanks 2 .

[0045] Furthermore, the driving assembly 4 includes a rectangular shield 40 fixedly connected to the top of the top plate 3, and a rotating rod 41 is rotatably connected between the left and right sides of the inner wall of the rectangular shield 40. The top of the inner wall of the rectangular shield 40 is provided with a plurality of positioning blocks 44 arranged equidistantly on the left and right. The rotating rod 41 is rotatably connected to the plurality of positioning blocks 44. Since the length of the rotating rod 41 is relatively long, the plurality of positioning blocks 44 can ensure the stable rotation of the rotating rod 41. A servo motor 43 for driving the rotating rod 41 to rotate is provided on the left side of the rectangular shield 40, and a plurality of active bevel gears 42 arranged equidistantly on the left and right are provided on the outer wall of the rotating rod 41. The servo motor 43 is connected to an external power supply to work, and the rotating rod 41 is driven to rotate by the servo motor 43, and the rotating rod 41 drives the plurality of active bevel gears 42 to rotate.

[0046] Furthermore, the top end of the rotating shaft 5 passes through the bottom of the top plate 3 and is coaxially connected to the driven bevel gear 50. The driving bevel gear 42 engages and rotates with the driven bevel gear 50. The connection between the rotating shaft 5 and the top plate 3 is connected by a shaft seal. The driving bevel gear 42 drives the driven bevel gear 50 to rotate, thereby driving the rotating shaft 5 to rotate.

[0047] Furthermore, a controller 7 and a temperature controller 8 are provided at the top of the U-shaped bracket 1 and near the middle of the front edge. The servo motor 43, the solenoid valve on the exhaust pipe 22, the solenoid valve on the acidic compound injection pipe 31, the solenoid valve on the alkaline compound injection pipe 32, and the pH sensor 17 are respectively electrically connected to the controller 7 through wires. The controller 7 controls the start and stop of the servo motor 43 and controls the solenoid valves on multiple exhaust pipes 22 to open and close in sequence to avoid simultaneous opening and causing exhaust gas to enter other reaction tanks 2. The electrical signal detected by the pH sensor 17 is transmitted to the controller 7 through a wire. The controller 7 analyzes and processes the electrical signal input by the pH sensor 17. When the alkalinity of the phosphoric acid solution is detected to be too high, the solenoid valve on the acidic compound injection pipe 31 is controlled to open to inject the acidic compound into the reaction tank 2. Conversely, the solenoid valve on the alkaline compound injection pipe 32 is controlled to open to inject the alkaline compound into the reaction tank 2.

[0048] The electric heating plate 15 and the temperature sensor 16 are electrically connected to the temperature controller 8 through wires, and the temperature controller 8 controls the heating temperature of the multiple reaction tanks 2 respectively.

[0049] When the phosphoric acid grading production device of this embodiment is used, the staff will put multiple portions of crushed phosphate ore of the same weight and different iron contents into multiple reaction tanks 2 respectively, and then put multiple portions of catalyst of the same weight into multiple reaction tanks 2 respectively, and then cover the sealing cover of the feeding pipe 30, and then start the controller 7 and the temperature controller 8 to work. The controller 7 controls the servo motor 43 to work, and the servo motor 43 drives the rotating rod 41 to rotate. The rotating rod 41 drives the multiple driving bevel gears 42 to rotate, and the driving bevel gears 42 drive the driven bevel gears 50 to rotate, thereby driving the rotating shaft 5 to rotate. The rotating shaft 5 drives the multiple stirring blades 51 to rotate, so that the stirring blades 51 stir the crushed phosphate ore and the catalyst in the reaction tank 2. The temperature controller 8 controls the electric heating plate 15 to heat the inside of the reaction tank 2 so that the temperature inside the reaction tank 2 is suitable for the reaction of the catalyst and the crushed phosphate ore. The electrical signal detected by the pH sensor 17 is transmitted to the controller 7 via a wire. The controller 7 analyzes and processes the electrical signal input by the pH sensor 17. When the alkalinity of the phosphoric acid solution is detected to be too high, the solenoid valve on the acidic compound injection pipe 31 is controlled to open, and the acidic compound is injected into the reaction tank 2. When the acidity of the phosphoric acid solution is detected to be too high, the solenoid valve on the alkaline compound injection pipe 32 is controlled to open, and the alkaline compound is injected into the reaction tank 2. During the production of the multi-stage phosphoric acid solution, the controller 7 controls the solenoid valves on the multiple exhaust pipes 22 to open and close in a cyclic manner to prevent simultaneous opening of the solenoid valves, which could cause waste gas to enter other reaction tanks 2. After the production of the multi-stage phosphoric acid solution is completed, the operator opens the control valves of the discharge pipe 20 respectively, so that the phosphoric acid solution in the reaction tank 2 can be discharged through the discharge pipe 20, thereby obtaining phosphoric acid solutions with different iron contents.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A phosphoric acid fractionation production device, comprising a U-shaped support (1), characterized in that: The top of the U-shaped bracket (1) is provided with a plurality of first mounting openings (10) arranged equidistantly from left to right, each of the first mounting openings (10) is provided with a reaction tank (2), an electric heating plate (15) is provided between the outer wall and the inner wall of the reaction tank (2), a temperature sensor (16) and a pH sensor (17) are provided on the inner wall of the reaction tank (2), a discharge pipe (20) with a valve is provided at the bottom end of the reaction tank (2), and a discharge valve with a solenoid valve is provided on the outer wall of the reaction tank (2) near the top of the rear side. The exhaust pipe (22) of the plurality of reaction tanks (2) is commonly connected to an exhaust main pipe (14), the tops of the plurality of reaction tanks (2) are commonly connected to a top plate (3), the top of the top plate (3) and a position close to the front side are provided with a plurality of feeding pipes (30) arranged equidistantly on the left and right, the tops of the feeding pipes (30) are threadedly connected to a sealing cover, the plurality of feeding pipes (30) are respectively connected to the plurality of reaction tanks (2), the top of the top plate (3) and a position close to the rear side are provided with a plurality of feeding pipes (30) arranged equidistantly on the left and right The top ends of the plurality of acidic compound injection pipes (31) are connected to a first liquid guide pipe (12). The plurality of acidic compound injection pipes (31) are connected to a plurality of reaction tanks (2) respectively. A plurality of alkaline compound injection pipes (32) are arranged at equal distances from each other on the top of the top plate (3) and near the rear side. The acidic compound injection pipes (31) and the alkaline compound injection pipes (32) are both provided with electromagnetic valves. The tops of the top plates (32) are commonly connected to a second liquid guide tube (13), the plurality of alkaline compound injection tubes (32) are respectively connected to the plurality of reaction tanks (2), the bottom of the top plate (3) is rotatably connected to a plurality of rotating shafts (5) arranged equidistantly from left to right, the plurality of rotating shafts (5) are respectively located in the plurality of reaction tanks (2), the outer walls of the rotating shafts (5) are provided with a plurality of stirring blades (51) arranged equidistantly from top to bottom, and the top of the top plate (3) is provided with a driving assembly (4) for driving the plurality of rotating shafts (5) to rotate.

2. The phosphoric acid fractionation production device according to claim 1, characterized in that: An annular limiting block (21) is provided in the middle of the outer wall of the reaction tank (2), and the bottom of the annular limiting block (21) abuts against the top of the U-shaped bracket (1).

3. The phosphoric acid fractionation production device according to claim 1, characterized in that: A support plate (6) is provided between the left and right sides of the inner wall of the U-shaped bracket (1), and a second installation opening (60) for the bottom ends of a plurality of reaction tanks (2) to pass through is provided on the top of the support plate (6).

4. The phosphoric acid fractionation production device according to claim 1, characterized in that: Support rods (11) are provided at the top of the U-shaped bracket (1) and near the four corners, and fastening bolts (9) are connected to the top of the top plate (3) and near the four corners, and the threaded ends of the fastening bolts (9) pass through the top of the top plate (3) and are threadedly connected to the tops of the support rods (11).

5. The phosphoric acid fractionation production device according to claim 1, characterized in that: The bottom of the top plate (3) is provided with a plurality of annular sleeves (33) arranged at equal intervals on the left and right sides, and the plurality of annular sleeves (33) are respectively sleeved on the tops of the plurality of reaction tanks (2).

6. The phosphoric acid fractionation production device according to claim 1, characterized in that: The driving assembly (4) comprises a rectangular shield (40) fixedly connected to the top of the top plate (3); a rotating rod (41) is rotatably connected between the left and right sides of the inner wall of the rectangular shield (40); a plurality of positioning blocks (44) arranged equidistantly on the left and right are provided on the top of the inner wall of the rectangular shield (40); the rotating rod (41) is rotatably connected to the plurality of positioning blocks (44); a servo motor (43) for driving the rotating rod (41) to rotate is provided on the left side of the rectangular shield (40); and a plurality of active bevel gears (42) arranged equidistantly on the left and right are provided on the outer wall of the rotating rod (41).

7. The phosphoric acid fractionation production device according to claim 6, characterized in that: The top end of the rotating shaft (5) passes through the bottom of the top plate (3) and is coaxially connected to a driven bevel gear (50), and the driving bevel gear (42) and the driven bevel gear (50) are meshed and rotated.

8. The phosphoric acid fractionation production device according to claim 6, characterized in that: A controller (7) and a temperature controller (8) are provided at the top of the U-shaped bracket (1) and near the middle of the front edge. The servo motor (43), the solenoid valve on the exhaust pipe (22), the solenoid valve on the acidic compound injection pipe (31), the solenoid valve on the alkaline compound injection pipe (32), and the pH sensor (17) are electrically connected to the controller (7) through wires, respectively. The electric heating plate (15) and the temperature sensor (16) are electrically connected to the temperature controller (8) through wires, respectively.

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