Phosphorus recovery device for chemical industry

Abstract

The application discloses a phosphorus recovery device for chemical industry, which comprises a supporting horizontal plate, a mounting rack plate is fixedly installed on the inner side surface of the supporting horizontal plate, a storage tank is rotatably installed on the mounting rack plate, an electric push rod is fixedly installed on the supporting horizontal plate, a tank cover is fixedly installed at the output end of the electric push rod, and a discharge pipe is arranged on the tank cover, so that the phosphorus vapor in the storage tank can be discharged through the discharge pipe. During use, the driving assembly and the linkage assembly can drive the stirring cam and the storage tank to rotate in opposite directions, and when the stirring cam rotates, the heating rod on the arc-shaped plate can realize reciprocating movement, so that the mud phosphorus is heated more uniformly, and the linkage assembly can drive the air outlet cylinder to work when working, the gas generated by the air outlet cylinder can enter the storage tank, the mud phosphorus in the storage tank can flow through the airflow, and the flowing mud phosphorus can uniformly contact the heating rod, so that the heating effect of the mud phosphorus is further improved.

Description

Technical Field

[0001] This invention relates to the field of chemical technology, specifically to a phosphorus recovery device for chemical applications. Background Technology

[0002] In the industrial production of yellow phosphorus, about 10% of mud phosphorus is discharged as industrial waste. Mud phosphorus contains about 30% yellow phosphorus, which will spontaneously combust when it comes into contact with air. This not only wastes resources but also pollutes the environment, and has long been a major problem in the production of yellow phosphorus.

[0003] In the prior art, Chinese patent publication number "CN107188140A" discloses a phosphorus recovery device for chemical use. It uses a water seal tank for sealing to prevent phosphorus vapor overflow, reducing manufacturing costs and facilitating maintenance. The vent channel is located at the top, facilitating the full discharge of phosphorus vapor. By keeping the storage tank stationary while the top cover rotates, energy consumption is reduced. A heat transfer rod is installed at the bottom of the storage tank, promoting rapid heat conduction and accelerating phosphorus evaporation. The heat transfer rod deforms a tension spring during stirring; the spring vibrates upon returning to its original shape, improving the stirring effect. This design solves the problems of existing phosphorus recovery devices, which generally use welding for sealing, resulting in high manufacturing costs, inconvenient maintenance, and difficult waste disposal after recovery; the drive motor rotates the entire storage tank, leading to significant energy loss; and the stirring rods provide poor stirring of the phosphorus mud, resulting in insufficient phosphorus recovery.

[0004] However, existing technologies still have significant shortcomings, such as:

[0005] In phosphorus recovery, sludge phosphorus is placed in a storage tank, heated to evaporate the phosphorus, and then collected by a specialized collection device. In the scheme described above, a heat-conducting rod is placed inside the storage tank, and the sludge phosphorus inside is stirred to ensure uniform contact between the heat generated by the heat-conducting rod and the sludge phosphorus. However, because the position of the heat-conducting rod remains unchanged inside the storage tank, the heat dissipation from the heat-conducting rod has limited reach. Furthermore, the sludge phosphorus inside the storage tank is clumped together. Although the stirring effect can be improved by the vibration generated by the stirring rod and the tension spring, the compression of the sludge phosphorus renders the vibration force of the tension spring ineffective, failing to disperse the sludge phosphorus over a large area. This prevents the heat generated by the heat-conducting rod from dissipating quickly, thus affecting the heating efficiency of the sludge phosphorus. Summary of the Invention

[0006] The purpose of this invention is to provide a phosphorus recovery device for chemical applications to solve the problems mentioned in the background art.

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

[0008] A phosphorus recovery device for chemical use includes a support plate, an mounting frame plate fixedly installed on the inner side of the support plate, a storage tank rotatably mounted on the mounting frame plate, an electric push rod fixedly installed on the support plate, a tank cover fixedly installed at the output end of the electric push rod, and a discharge pipe provided on the tank cover to facilitate the discharge of phosphorus vapor from the storage tank.

[0009] The outer side of the supporting cross plate is provided with a driving component, which facilitates the rotation of the storage tank. The driving component is provided with a linkage component, the linkage component is provided with a reciprocating component, and the reciprocating component is provided with a heating rod. The reciprocating component drives the heating rod to move, so that the phosphorus is heated more effectively in the storage tank.

[0010] Preferably, the drive assembly includes a driven gear ring and a fixed plate. The driven gear ring is fixedly installed on the outer side of the storage tank, and the fixed plate is installed on the side end face of the support plate. A drive motor is fixedly installed on the fixed plate, and a drive gear is fixedly installed on the output shaft of the drive motor. The drive gear meshes with the driven gear ring, thereby driving the storage tank to rotate.

[0011] Preferably, the linkage assembly includes a reciprocating lead screw and a rotating shaft. The reciprocating lead screw is mounted on the output shaft of the drive motor, and the rotating shaft is mounted on the mounting plate. A first pulley is fixedly mounted on the reciprocating lead screw, and a second pulley and a stirring cam are fixedly mounted on the rotating shaft. The first pulley is driven by the second pulley through a transmission belt. By rotating the stirring cam in both directions relative to the storage tank, the heating effect of the mud and phosphorus in the storage tank is improved.

[0012] Preferably, the reciprocating assembly includes an extension plate slidably mounted on the inner wall of the storage tank. An arc-shaped plate is mounted on the end of the extension plate away from the storage tank. A return spring is fixedly mounted on the arc-shaped plate. The end of the return spring away from the arc-shaped plate is mounted on the inner wall of the storage tank. The heating rod is mounted on the arc-shaped plate. The arc-shaped plate is squeezed by the rotation of the stirring cam, and the reciprocating motion of the arc-shaped plate is realized by the elastic properties of the return spring.

[0013] Preferably, a lifting block is movably mounted on the reciprocating lead screw, a toggle block is provided on the lifting block, and a push plate is fixedly mounted on the lifting block;

[0014] A positioning plate is fixedly installed on the side end face of the mounting bracket, and an air outlet is fixedly installed on the positioning plate. A push rod is slidably installed on the air outlet, and the end of the push rod away from the air outlet is installed on a push plate. A connecting pipe is installed at the exhaust port of the air outlet. The reciprocating motion of the lifting block drives the piston on the push rod to slide inside the air outlet, so that the gas discharged from the air outlet enters the storage tank, making the mud and phosphorus in the storage tank contact the heating rod more effectively.

[0015] Preferably, an annular diverter pipe is fixedly installed at the end of the connecting pipe away from the air outlet, and an exhaust pipe is fixedly installed on the annular diverter pipe.

[0016] Preferably, there are multiple exhaust pipes, which allow the gas to enter the storage tank evenly, thus improving the heat conduction between the heating rod and the mud and phosphorus in the storage tank.

[0017] Preferably, a limiting sliding block is fixedly installed on the lifting block, and a limiting sliding groove is provided on the side end face of the mounting plate. The limiting sliding block slides within the limiting sliding groove, thereby making the lifting block more stable during reciprocating motion.

[0018] Preferably, a U-shaped plate is fixedly installed on the upper end face of the mounting bracket, and the top end of the rotating shaft is installed on the U-shaped plate, so that the rotating shaft is more stable when rotating.

[0019] Preferably, the positioning plate is provided with a through hole, the diameter of which is larger than the diameter of the reciprocating lead screw, so that the reciprocating lead screw is not affected by the positioning plate when rotating.

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

[0021] 1. In this invention, a drive motor drives a driving gear to rotate, which meshes with a driven gear ring. The rotation of the driven gear ring drives the storage tank to rotate. When the output shaft of the drive motor rotates, it drives a reciprocating screw to rotate. The first pulley on the reciprocating screw drives a second pulley to rotate, which in turn drives a rotating shaft to rotate. When the rotating shaft rotates, it drives a stirring cam to rotate. The forward and reverse rotation of the stirring cam and the storage tank improves the heating effect of the mud and phosphorus in the storage tank.

[0022] 2. When the stirring cam rotates, it will squeeze the arc plate when it reaches a certain angle. The arc plate will then use the elasticity of the return spring to make the heating rod on the arc plate reciprocate. By adjusting the position of the heating rod, the heating rod on the heating plate can better conduct heat to the mud and phosphorus, thus making the mud and phosphorus more evenly heated.

[0023] 3. When the reciprocating screw rotates, it drives the lifting block to reciprocate. When the lifting block reciprocates, it drives the push rod on the push plate to slide inside the air outlet. The piston on the push rod slides inside the air outlet, causing the gas discharged from the air outlet to be discharged into the annular diverter pipe through the connecting pipe. The gas in the annular diverter pipe will enter the storage tank through multiple exhaust pipes. The gas filling causes the mud and phosphorus at the exhaust pipe outlet to flow. The flowing mud and phosphorus will be in uniform contact with the heating rod, thereby further improving the heating effect of the mud and phosphorus. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the mounting plate in this invention;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the reciprocating component in this invention;

[0028] Figure 5 This is a top view of the arc-shaped plate in this invention;

[0029] Figure 6 This is a schematic diagram of the annular shunt tube in this invention;

[0030] Figure 7 This is a schematic diagram of the reciprocating lead screw in this invention.

[0031] In the diagram: 1. Supporting horizontal plate; 2. Mounting frame plate; 3. Storage tank; 4. Electric push rod; 5. Tank lid; 6. Discharge pipe; 7. Heating rod; 8. Driven gear ring; 9. Fixing plate; 10. Drive motor; 11. Drive gear; 12. Reciprocating lead screw; 13. Rotating shaft; 14. First pulley; 15. Second pulley; 16. Stirring cam; 17. Extension plate; 18. Arc plate; 19. Return spring; 20. Lifting block; 21. Actuating block; 22. Push plate; 23. Positioning plate; 24. Air outlet; 25. Top rod; 26. Connecting pipe; 27. Annular diverter pipe; 28. Exhaust pipe; 29. ​​Limiting sliding block; 30. Limiting sliding groove; 31. U-shaped plate; 32. Through hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-7 The present invention provides a technical solution:

[0034] Example 1:

[0035] Please see Figure 1-3 and Figure 7 A phosphorus recovery device for chemical use includes a supporting horizontal plate 1. A mounting frame 2 is fixedly installed on the inner side of the supporting horizontal plate 1. The mounting frame 2 consists of two vertical plates and one horizontal plate, with the horizontal plate installed between the two vertical plates. A U-shaped plate 31 is fixedly installed on the upper end face of the mounting frame 2. The top end of a rotating shaft 13 is mounted on the U-shaped plate 31, which makes the rotating shaft 13 more stable during rotation. A control panel can be installed on the mounting frame 2 to control the electrical equipment in the device. This technology is conventional in the field and will not be described in detail here. A storage tank 3 is rotatably mounted on the mounting frame 2. A rotating ring is provided on the storage tank 3, and the rotating ring is connected to the mounting frame 2. The mounting plate 2 is rotated to ensure the stability of the storage tank 3 when it rotates. A pressure valve is installed on the storage tank 3. When the pressure inside the storage tank 3 is high, it can be discharged through the pressure valve. An electric push rod 4 is fixedly installed on the support plate 1. A tank cover 5 is fixedly installed at the output end of the electric push rod 4. A discharge pipe 6 is installed on the tank cover 5. The discharge pipe 6 facilitates the discharge of phosphorus vapor in the storage tank 3. Since the tank cover 5 is designed to be movable, the outlet of the discharge pipe 6 can be connected through a telescopic hose. Then, the collection equipment is connected through the telescopic hose. This collection equipment is conventional equipment in this technical field and will not be described in detail here.

[0036] A drive assembly is provided on the outer side of the support plate 1. The drive assembly facilitates the rotation of the storage tank 3. A linkage assembly is provided on the drive assembly, a reciprocating assembly is provided on the linkage assembly, and a heating rod 7 is provided on the reciprocating assembly. The reciprocating assembly drives the heating rod 7 to move, so that the phosphorus is heated more effectively in the storage tank 3.

[0037] The drive assembly includes a driven gear ring 8 and a fixed plate 9. The driven gear ring 8 is fixedly installed on the outer side of the storage tank 3, and the fixed plate 9 is installed on the side end face of the support plate 1. A drive motor 10 is fixedly installed on the fixed plate 9, and a drive gear 11 is fixedly installed on the output shaft of the drive motor 10. The drive gear 11 meshes with the driven gear ring 8, thereby driving the storage tank 3 to rotate.

[0038] The linkage assembly includes a reciprocating screw 12 and a rotating shaft 13. Only a portion of the reciprocating thread on the reciprocating screw 12 is provided, and this portion of the reciprocating thread determines the amount of air output from the air outlet 24. This reciprocating thread can be set according to personnel needs. A stabilizing plate is rotatably mounted on the top of the reciprocating screw 12. The stabilizing plate is mounted on the side end face of the mounting plate 2 to ensure the stability of the reciprocating screw 12 during rotation. The reciprocating screw 12 is mounted on the output shaft of the drive motor 10, and the rotating shaft 13 is mounted on the mounting plate 2. A first pulley 14 is fixedly mounted on the reciprocating screw 12, and a second pulley 15 and a stirring cam 16 are fixedly mounted on the rotating shaft 13. The stirring cam 16 is located below the second pulley 15 and inside the storage tank 3. The number of stirring cams 16 can be set according to personnel needs, and there is at least one stirring cam 16. The first pulley 14 is driven by the second pulley 15 through a transmission belt.

[0039] In this embodiment, the lid 5 is raised by an electric push rod 4, and then the mud and phosphorus are placed into the storage tank 3. The lid 5 is then returned to its original position by the electric push rod 4 to seal the storage tank 3. The drive motor 10 drives the drive gear 11 to rotate. The drive gear 11 meshes with the driven gear ring 8, and the rotation of the driven gear ring 8 drives the storage tank 3 to rotate. When the output shaft of the drive motor 10 rotates, it drives the reciprocating screw 12 to rotate. The reciprocating screw 12 rotates, which in turn drives the first pulley 14 to rotate. The first pulley 14 drives the second pulley 15 to rotate via a transmission belt. The second pulley 15 rotates, which in turn drives the rotating shaft 13 to rotate. When the rotating shaft 13 rotates, it drives the stirring cam 16 to rotate. The forward and reverse rotation of the stirring cam 16 and the storage tank 3 improves the heating effect of the mud and phosphorus in the storage tank 3.

[0040] Example 2:

[0041] Please see Figure 4-5Based on Embodiment 1, to improve the heating effect of the mud and phosphorus in the storage tank 3, a linkage assembly and a reciprocating assembly are used to achieve this effect. The reciprocating assembly includes an extension plate 17, which is slidably mounted on the inner wall of the storage tank 3. A groove is provided on the inner wall of the storage tank 3, and part of the volume of the extension plate 17 is located inside the groove. The groove ensures the stability of the extension plate 17 during movement, and when the extension plate 17 slides in the groove, it is limited by the stirring cam 16 to prevent the extension plate 17 from sliding out of the groove. An arc-shaped plate 18 is installed at the end of the extension plate 17 away from the storage tank 3, and a return spring 19 is fixedly installed on the arc-shaped plate 18. The return spring 19 is located away from the arc-shaped plate 18. One end of the curved plate 18 is installed on the inner wall of the storage tank 3. The heating rod 7 is installed on the curved plate 18. There are at least three heating rods 7 on each curved plate 18 to ensure that the heat emitted by the heating rod 7 accelerates the evaporation of mud and phosphorus. The curved plate 18 is squeezed by the rotation of the stirring cam 16, and the reciprocating motion of the curved plate 18 is realized by the elasticity of the return spring 19. The connecting wire of the heating rod 7 can be installed inside the curved plate 18 through the extension plate 17, and the other end of the connecting wire can be connected to the outside. The power supply device can be installed on the storage tank 3. There is no need to worry about the heating rod 7 failing to work properly due to the movement of the heating rod 7.

[0042] In this embodiment, when the stirring cam 16 rotates to a certain angle, the stirring cam 16 will squeeze the arc plate 18, and the arc plate 18 will reciprocate by utilizing the elastic properties of the return spring 19. By adjusting the position of the heating rod 7, the heating rod on the heating plate can better conduct heat to the mud and phosphorus, thereby improving the heating effect of the mud and phosphorus.

[0043] Example 3:

[0044] Please see Figure 6 Based on Example 1, in order to further improve the heating effect of mud phosphorus, this effect is achieved by the gas discharged from the air cylinder. A lifting block 20 is movably installed on the reciprocating screw 12, and a limiting sliding block 29 is fixedly installed on the lifting block 20. A limiting sliding groove 30 is provided on the side end face of the mounting plate 2. By limiting the sliding within the limiting sliding groove 30, the lifting block 20 is more stable during reciprocating motion, so that it will not have a positional deviation. The stability of the lifting block 20 can ensure the stability of the sliding of the top rod 25 in the air cylinder 24. A toggle block 21 is provided on the lifting block 20, and a push plate 22 is fixedly installed on the lifting block 20.

[0045] A positioning plate 23 is fixedly installed on the side end face of the mounting plate 2. The positioning plate 23 has a through hole 32, the diameter of which is larger than the diameter of the reciprocating lead screw 12. The through hole 32 ensures that the reciprocating lead screw 12 is not affected by the positioning plate 23 during rotation. An air outlet cylinder 24 is fixedly installed on the positioning plate 23. The air outlet cylinder 24 has an air inlet pipe with a one-way valve. The structure of the air outlet cylinder 24 is the same as that of existing air pumps, so the air inlet pipe is not shown in this paper. This technology is conventional in this field and will not be described in detail here. A sliding mounting plate is installed on the air outlet cylinder 24. The device is equipped with a push rod 25, with one end of the push rod 25 away from the air outlet 24 mounted on the push plate 22. The exhaust port of the air outlet 24 is equipped with a connecting pipe 26, and a one-way valve is installed in the connecting pipe 26. The one-way valve is an existing device and will not be described in detail in this article. The connecting pipe 26 facilitates the discharge of gas from the air outlet 24 into the annular diverter pipe 27. The reciprocating motion of the lifting block 20 uses the positioning plate 23 to drive the piston on the push rod 25 to slide inside the air outlet 24, so that the gas discharged from the air outlet 24 enters the storage tank 3, making the mud and phosphorus in the storage tank 3 contact the heating rod 7 more effectively.

[0046] An annular diverter pipe 27 is fixedly installed at the end of the connecting pipe 26 away from the outlet pipe 24. An exhaust pipe 28 is fixedly installed on the annular diverter pipe 27. A one-way valve is provided at the outlet of the exhaust pipe 28. This technology is a conventional method in the field and will not be described in detail here. There are multiple exhaust pipes 28. The gas enters the storage tank 3 evenly through multiple exhaust pipes 28, which makes the heat conduction effect between the heating rod 7 and the mud and phosphorus in the storage tank 3 better.

[0047] In this embodiment, when the reciprocating screw 12 rotates, it drives the lifting block 20 to rise and fall. The lifting block 20 then moves back and forth on the reciprocating screw 12 through the action of the actuating block 21. When the lifting block 20 moves back and forth, it drives the push rod 25 on the push plate 22 to slide in the air outlet cylinder 24. The piston on the push rod 25 slides in the air outlet cylinder 24, so that the gas discharged from the air outlet cylinder 24 is discharged into the annular diversion pipe 27 through the connecting pipe 26. The gas in the annular diversion pipe 27 will enter the storage tank 3 through multiple exhaust pipes 28. The gas filling causes the mud phosphorus at the outlet of the exhaust pipe 28 to flow. The flowing mud phosphorus will be in uniform contact with the heating rod 7, thereby further improving the heating effect of the mud phosphorus.

[0048] Working principle:

[0049] In use, the lid 5 is raised by the electric push rod 4, and then the mud and phosphorus are put into the storage tank 3. Then, the lid 5 is returned to its original position by the electric push rod 4 to seal the storage tank 3. The drive motor 10 drives the drive gear 11 to rotate. The drive gear 11 meshes with the driven gear ring 8. The rotation of the driven gear ring 8 drives the storage tank 3 to rotate. When the output shaft of the drive motor 10 rotates, it drives the reciprocating screw 12 to rotate. When the reciprocating screw 12 rotates, it drives the first pulley 14 to rotate. The first pulley 14 drives the second pulley 15 to rotate through the transmission belt. When the second pulley 15 rotates, it drives the rotating shaft 13 to rotate. When the rotating shaft 13 rotates, it drives the stirring cam 16 to rotate. The forward and reverse rotation of the stirring cam 16 and the storage tank 3 improves the heating effect of the mud and phosphorus in the storage tank 3.

[0050] When the stirring cam 16 rotates to a certain angle, the stirring cam 16 will squeeze the arc plate 18. The arc plate 18 will move horizontally in the storage tank 3 through the extension plate 17, thereby adjusting the position of the heating rod 7 on the arc plate 18. Furthermore, the arc plate 18 will reciprocate by utilizing the elastic properties of the return spring 19. By adjusting the position of the heating rod 7, the heat exchanger on the heating plate can better conduct heat to the mud and phosphorus, thereby improving the heating effect of the mud and phosphorus.

[0051] When the reciprocating screw 12 rotates, it drives the lifting block 20 to rise and fall. The lifting block 20 slides within the limiting sliding groove 30 on the mounting plate 2 through the limiting sliding block 29, thus ensuring the stability of the lifting block 20 during lifting and falling and preventing positional deviation. The lifting block 20 then reciprocates on the reciprocating screw 12 through the action of the actuating block 21. When the lifting block 20 reciprocates, it drives the push rod 25 on the push plate 22 to slide within the air outlet 24. The piston on the push rod 25 slides within the air outlet 24, causing the gas discharged from the air outlet 24 to be discharged into the annular diversion pipe 27 through the connecting pipe 26. The gas in the annular diversion pipe 27 enters the storage tank 3 through multiple exhaust pipes 28. The gas filling causes the mud and phosphorus at the outlet of the exhaust pipe 28 to flow. The flowing mud and phosphorus will be in uniform contact with the heating rod 7, thereby further improving the heating effect of the mud and phosphorus.

[0052] Finally, the phosphorus vapor generated by heating the mud phosphorus in the storage tank 3 will be discharged through the discharge pipe 6, and the discharged gas will be collected by an external collection device.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phosphorus recovery device for chemical use, comprising a supporting horizontal plate (1), characterized in that: An installation frame plate (2) is fixedly installed on the inner side of the support plate (1). A storage tank (3) is rotatably installed on the installation frame plate (2). An electric push rod (4) is fixedly installed on the support plate (1). A tank cover (5) is fixedly installed at the output end of the electric push rod (4). A discharge pipe (6) is provided on the tank cover (5). The discharge pipe (6) facilitates the discharge of phosphorus vapor in the storage tank (3). The outer side of the supporting horizontal plate (1) is provided with a driving component, which facilitates the rotation of the storage tank (3). The driving component is provided with a linkage component, the linkage component is provided with a reciprocating component, and the reciprocating component is provided with a heating rod (7). The reciprocating component drives the heating rod (7) to move. The drive assembly includes a driven gear ring (8) and a fixed plate (9). The driven gear ring (8) is fixedly installed on the outer side of the storage tank (3). The fixed plate (9) is installed on the side end face of the support plate (1). A drive motor (10) is fixedly installed on the fixed plate (9). A drive gear (11) is fixedly installed on the output shaft of the drive motor (10). The drive gear (11) meshes with the driven gear ring (8). The linkage assembly includes a reciprocating screw (12) and a rotating shaft (13). The reciprocating screw (12) is mounted on the output shaft of the drive motor (10), and the rotating shaft (13) is mounted on the mounting plate (2). A first pulley (14) is fixedly mounted on the reciprocating screw (12), and a second pulley (15) and a stirring cam (16) are fixedly mounted on the rotating shaft (13). The first pulley (14) is driven by the second pulley (15) through a transmission belt. Both the stirring cam (16) and the storage tank (3) can rotate in both directions. The reciprocating assembly includes an extension plate (17), which is slidably mounted on the inner wall of the storage tank (3). An arc plate (18) is mounted on one end of the extension plate (17) away from the storage tank (3). A return spring (19) is fixedly mounted on the arc plate (18). The end of the return spring (19) away from the arc plate (18) is mounted on the inner wall of the storage tank (3). The heating rod (7) is mounted on the arc plate (18). The arc plate (18) is squeezed by the rotation of the stirring cam (16), and the reciprocating motion of the arc plate (18) is realized by the elastic properties of the return spring (19).

2. The phosphorus recovery device for chemical use according to claim 1, characterized in that: A lifting block (20) is movably installed on the reciprocating screw (12), a toggle block (21) is provided on the lifting block (20), and a push plate (22) is fixedly installed on the lifting block (20). A positioning plate (23) is fixedly installed on the side end face of the mounting plate (2). An air outlet (24) is fixedly installed on the positioning plate (23). A push rod (25) is slidably installed on the air outlet (24). The end of the push rod (25) away from the air outlet (24) is installed on the push plate (22). A connecting pipe (26) is installed at the exhaust port of the air outlet (24). The reciprocating motion of the lifting block (20) drives the piston on the push rod (25) to slide inside the air outlet (24) through the positioning plate (23), so that the gas discharged from the air outlet (24) enters the storage tank (3).

3. The phosphorus recovery device for chemical use according to claim 2, characterized in that: An annular diverter pipe (27) is fixedly installed at the end of the connecting pipe (26) away from the air outlet (24), and an exhaust pipe (28) is fixedly installed on the annular diverter pipe (27).

4. A phosphorus recovery device for chemical use according to claim 3, characterized in that: There are multiple exhaust pipes (28), and the gas is evenly introduced into the storage tank (3) through multiple exhaust pipes (28).

5. A phosphorus recovery device for chemical use according to claim 4, characterized in that: A limiting sliding block (29) is fixedly installed on the lifting block (20), and a limiting sliding groove (30) is provided on the side end face of the mounting plate (2). The limiting sliding block (29) slides within the limiting sliding groove (30).

6. A phosphorus recovery device for chemical use according to claim 5, characterized in that: A U-shaped plate (31) is fixedly installed on the upper end face of the mounting plate (2), and the top end of the rotating shaft (13) is installed on the U-shaped plate (31).

7. A phosphorus recovery device for chemical use according to claim 6, characterized in that: The positioning plate (23) is provided with a through hole (32), the diameter of which is larger than the diameter of the reciprocating lead screw (12).

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