A device for modifying phosphogypsum

Abstract

This invention discloses a modification treatment device for phosphogypsum, belonging to the field of phosphogypsum treatment technology. It includes: a treatment tank with a support frame inside; two filter plates symmetrically arranged on the support frame, the bottom of which moves upward under force and eventually returns to its original position; a pressure roller located above the filter plates; a rotating mechanism located on the support frame for driving the pressure roller to rotate; and a vibration mechanism located inside the treatment tank and below the filter plates. This solution uses the rotating mechanism to drive the pressure roller to crush the phosphogypsum on the filter plates, preventing lumps from forming. This allows for more uniform reaction or proportioning of the phosphogypsum during mixing, reducing its impact on modification processes or subsequent applications in roadbed engineering, and improving the modification effect and quality of the phosphogypsum. The vibration mechanism causes the two filter plates to vibrate intermittently, preventing phosphogypsum accumulation on the filter plates and improving the screening effect.

Description

Technical Field

[0001] This invention relates to the field of phosphogypsum treatment technology, and more specifically, to a device for modifying phosphogypsum. Background Technology

[0002] Phosphogypsum is an industrial waste residue discharged from the phosphoric acid or phosphate fertilizer industry and some synthetic detergent industries. Large-scale discharge of phosphogypsum not only occupies a large amount of land but also causes pollution of soil, water systems, and the atmosphere. However, by modifying phosphogypsum and applying it in building materials, roadbeds, agriculture, and other fields, it can achieve resource utilization, low cost, energy conservation, and emission reduction.

[0003] Modification of phosphogypsum refers to the removal or passivation of its harmful impurities and the improvement of its properties (such as setting time, strength, stability, pH value, etc.) through physical, chemical, thermal or composite methods. Using modified phosphogypsum in roadbed materials is an important way to make large-scale, resource-efficient use of industrial solid waste.

[0004] In the modification process of phosphogypsum or its subsequent application, it is necessary to mix or formulate phosphogypsum with other materials. However, phosphogypsum may contain large particles or hard lumps before processing, or during stacking or pre-storage. Direct mixing and formulation can lead to uneven reaction or proportions, which can significantly affect the modification process of phosphogypsum or its subsequent application in roadbed engineering and other scenarios, thus affecting the modified use effect and quality of phosphogypsum.

[0005] Therefore, it is necessary to provide a modification treatment apparatus for phosphogypsum to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a device for modifying phosphogypsum to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An apparatus for modifying phosphogypsum, comprising: The processing tank has an internal support frame; Two filter plates are symmetrically arranged on the support frame. The bottom of the filter plate moves upward under force and eventually returns to its original position. The pressure roller is located above the filter plate; A rotating mechanism, located on the support frame, is used to drive the pressure roller to rotate; A vibration mechanism is installed inside the treatment tank and below the filter plates, and is used to drive the two filter plates to vibrate intermittently.

[0008] Furthermore, the rotating mechanism includes: A rotating shaft is rotatably disposed in the middle of the support frame, and a fixed seat is provided on the rotating shaft. The pressure roller is rotatably connected to the fixed seat. A drive component, mounted on the processing tank, is used to drive the rotating shaft to rotate.

[0009] Furthermore, the driving component includes: A cover plate is detachably connected to the processing tank. A driving component is provided on the cover plate, and the output end of the driving component is connected to the rotating shaft.

[0010] Furthermore, a limiting plug is provided at the top of the rotating shaft, and a connecting shaft is provided at the output end of the driving component. The end of the connecting shaft is provided with a socket that is compatible with the limiting plug.

[0011] Furthermore, the inner wall of the treatment tank is provided with multiple fixing plates, and the lower end of the fixing plate is provided with a first elastic element, the lower end of the first elastic element being connected to the filter plate.

[0012] Furthermore, the vibration mechanism includes: Two support plates are disposed on the inner wall of the processing tank. A vibrating rod slides through the support plates. An L-shaped mating plate is disposed at the bottom of the vibrating rod. A second elastic element is disposed between the L-shaped mating plate and the support plates. A linkage component, located inside the processing tank, is used to drive the two L-shaped mating plates to move intermittently downwards.

[0013] Furthermore, the linkage component includes: A linkage shaft is rotatably mounted on the inner wall of the processing tank, and the linkage shaft is equipped with a first bevel gear and two incomplete gears; The L-shaped mating plate is provided with a toothed plate that intermittently meshes with the incomplete gear, and the lower end of the rotating shaft is provided with a second bevel gear that meshes with the first bevel gear.

[0014] Furthermore, a vibration plate is provided at the upper end of the vibrating rod, and the two vibration plates are respectively located below the two filter plates.

[0015] Furthermore, a mounting base is provided on the rotating shaft, and a cleaning roller brush that contacts the outer wall of the pressure roller is mounted on the mounting base.

[0016] Furthermore, one end of the cleaning roller brush is provided with a mounting rod, the mounting rod is provided with a positioning block, the end of the mounting seat is provided with a mounting hole adapted to the mounting rod, the mounting hole is provided with a positioning groove adapted to the positioning block, and the mounting seat is provided with bolts for pressing the mounting rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this scheme, before mixing phosphogypsum, the phosphogypsum is put into the processing tank. Larger particles or lumps will be blocked on the filter plate. Then, the rotating mechanism drives the pressure roller to rotate, which crushes the phosphogypsum on the filter plate. The phosphogypsum that has been crushed to the required size will pass through the filter plate. This crushing of large particles and hard lumps into a qualified state can prevent the presence of lumps in the phosphogypsum. It can make the reaction or proportion of the treated phosphogypsum more uniform during the mixing and formulation, greatly reducing the impact on its modification process or subsequent applications in roadbed engineering, and significantly improving the modification effect and quality of phosphogypsum. Moreover, because it can be mixed more quickly and uniformly, it can improve the processing efficiency of phosphogypsum and has strong practicality.

[0018] 2. By operating the vibration mechanism, the two filter plates can be driven to vibrate intermittently, which can cause the residual phosphogypsum on the filter plates to fall off, avoiding the accumulation of phosphogypsum on the filter plates, so that the phosphogypsum can be screened out more quickly, resulting in high filtration and screening efficiency and improving the screening effect of the filter plates; it can also effectively reduce the clogging of the filter plates, and when used with pressure rollers, it can better handle and screen phosphogypsum, resulting in good performance. The vibration mechanism drives the two filter plates to vibrate intermittently. When the pressure roller rotates above one of the filter plates, the vibration mechanism will drive the other filter plate to vibrate. This process is repeated to avoid interference between the filter plate vibration and the pressure roller, thus preventing the failure to achieve the desired vibration effect and improving the vibration separation effect of the filter plates. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the processing device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing tank of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 for Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the filter plate inside the processing tank of the present invention from the bottom view. Figure 6 for Figure 5 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the bottom structure of the cover plate of the present invention; Figure 8 This is a schematic diagram of the cleaning roller brush and mounting base before installation of the present invention; Figure 9 for Figure 8 Enlarged structural diagram at point D.

[0020] Explanation of the labels in the diagram: 1. Processing tank; 2. Support frame; 3. Filter plate; 4. Pressure roller; 5. Rotating mechanism; 51. Rotating shaft; 52. Fixed seat; 53. Drive component; 531. Cover plate; 532. Drive component; 6. Vibration mechanism; 61. Support plate; 62. Vibrating rod; 63. L-shaped mating plate; 64. Second elastic element; 65. Linkage component; 651. Linkage shaft; 652. First bevel gear; 653. Incomplete gear; 654. Tooth plate; 655. Second bevel gear; 7. Limiting block; 8. Connecting shaft; 9. Insert; 10. Fixed plate; 11. First elastic element; 111. Damper; 112. Return spring; 12. Vibration plate; 13. Mounting seat; 14. Cleaning roller brush; 15. Mounting rod; 16. Positioning block; 17. Mounting hole; 18. Positioning groove; 19. Bolt. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-9 A modification treatment apparatus for phosphogypsum, comprising: Processing tank 1, with a support frame 2 installed inside; Two filter plates 3 are symmetrically arranged on the support frame 2. The bottom of the filter plate 3 will move upward under force and eventually return to its original position. The pressure roller 4 is located above the filter plate 3; The rotating mechanism 5 is mounted on the support frame 2 and is used to drive the pressure roller 4 to rotate. The vibration mechanism 6 is located inside the treatment tank 1 and below the filter plate 3, and is used to drive the two filter plates 3 to vibrate intermittently.

[0023] In use, before mixing phosphogypsum, the phosphogypsum is added to the processing tank 1. The phosphogypsum falls onto the filter plate 3. Particles of the appropriate size and those not clumped together pass through the filter plate 3 and fall to the discharge port, while larger particles or lumps are blocked on the filter plate 3. Then, the rotating mechanism 5 drives the pressure roller 4 to rotate. The pressure roller 4 rotates along the axis of the support frame 2, thus crushing the phosphogypsum on the filter plate 3. The crushed phosphogypsum passes through the filter plate 3. Through repeated crushing by the pressure roller 4, large particles and hard lumps of phosphogypsum are crushed into a suitable state, preventing lumps from remaining in the phosphogypsum. This allows for a more uniform reaction or proportion during mixing and formulation of the treated phosphogypsum, greatly reducing the impact on its modification process or subsequent applications in roadbed engineering, and significantly improving the modification effect and quality of phosphogypsum. Moreover, because it can be mixed more quickly and uniformly, it can improve the processing efficiency of phosphogypsum and has strong practicality.

[0024] In addition, by operating the vibration mechanism 6, the two filter plates 3 can be driven to vibrate intermittently. The vibration of the filter plates 3 can cause the residual phosphogypsum on the filter plates 3 to fall off, avoiding the accumulation of phosphogypsum on the filter plates 3, so that the phosphogypsum can be screened out more quickly, resulting in high filtration and screening efficiency and improving the screening effect of the filter plates 3. It can also effectively reduce the clogging of the filter plates 3. When used in conjunction with the pressure roller 4, it can better process and screen phosphogypsum, resulting in good performance.

[0025] The vibration mechanism 6 drives the two filter plates 3 to vibrate intermittently. That is, when the pressure roller 4 rotates above one of the filter plates 3, the vibration mechanism 6 will drive the other filter plate 3 to vibrate. In other words, the filter plate 3 where the pressure roller 4 rotates does not vibrate, while the other one vibrates. This process is repeated to avoid interference between the vibration of the filter plate 3 and the pressure roller 4, thus preventing the failure to achieve the desired vibration effect and improving the vibration separation effect of the filter plate 3.

[0026] For preferred options, please refer to [link / reference]. Figure 1-3 The rotating mechanism 5 includes: A rotating shaft 51 is rotatably mounted in the middle of the support frame 2. A fixed seat 52 is mounted on the rotating shaft 51, and the pressure roller 4 is rotatably connected to the fixed seat 52. The drive component 53 is installed on the processing tank 1 and is used to drive the rotating shaft 51 to rotate.

[0027] Specifically, the rotating shaft 51 can be driven to rotate by operating the drive component 53. When the rotating shaft 51 rotates, it will drive the fixed seat 52 and the pressure roller 4 to rotate. The pressure roller 4 will rotate along the axis of the rotating shaft 51, which can crush the phosphogypsum on the filter plate 3.

[0028] In this embodiment, preferably, please refer to [reference needed]. Figure 1 The drive component 53 includes: The cover plate 531 is detachably connected to the processing tank 1. A drive component 532 is provided on the cover plate 531, and the output end of the drive component 532 is connected to the rotating shaft 51.

[0029] Specifically, the drive unit 532 in this application can be a servo motor. When the cover plate 531 is installed on the processing tank 1, the output end of the drive unit 532 is connected to the end of the rotating shaft 51. By starting the drive unit 532, the rotating shaft 51 connected to it can be driven to rotate through its output end.

[0030] When disassembling the cover plate 531, simply separate the output end of the drive component 532 from the rotating shaft 51.

[0031] For preferred options, please refer to [link / reference]. Figure 2 , Figure 5 and Figure 7 The top of the rotating shaft 51 is provided with a limit plug 7, and the output end of the drive component 532 is provided with a connecting shaft 8. The end of the connecting shaft 8 is provided with a socket 9 that is adapted to the limit plug 7.

[0032] Specifically, when the cover plate 531 is installed on the processing tank 1, the connecting shaft 8 at the output end of the drive component 532 is aligned with the rotating shaft 51, and the limiting plug 7 is inserted into the socket 9 of the connecting shaft 8. At this time, the connection between the connecting shaft 8 and the rotating shaft 51 is realized. When the drive component 532 drives the connecting shaft 8 to rotate, it will synchronously drive the limiting plug 7 and the rotating shaft 51 to rotate. The installation is simple and convenient, saving time and effort.

[0033] When removing the cover plate 531, simply moving the cover plate 531 upwards will separate the connecting shaft 8 from the rotating shaft 51, making the disassembly process very convenient.

[0034] For preferred options, please refer to [link / reference]. Figure 2 and Figure 4-5 The inner wall of the treatment tank 1 is provided with multiple fixing plates 10, and the lower end of the fixing plate 10 is provided with a first elastic element 11, the lower end of the first elastic element 11 being connected to the filter plate 3.

[0035] With this design, when the filter plate 3 is vibrated by the vibration mechanism 6 below, the filter plate 3 vibrates itself and moves upward under force. The filter plate 3 causes the first elastic element 11 to compress and deform, which can play a partial buffering role for the filter plate 3. At the same time, when the filter plate 3 is no longer under force, the first elastic element 11 will drive the filter plate 3 to move downward and reset, which increases the movement and vibration distance of the filter plate 3, thereby further improving the vibration screening effect of the filter plate 3.

[0036] The first elastic element 11 includes a damper 111 and a return spring 112. The damper 111 and the return spring 112 work together to improve the buffering and stability of the filter plate 3.

[0037] In this embodiment, preferably, please refer to [reference needed]. Figure 2 and Figure 5-6 The vibration mechanism 6 includes: Two support plates 61 are provided on the inner wall of the processing tank 1. A vibrating rod 62 slides through the support plate 61. An L-shaped mating plate 63 is provided at the bottom of the vibrating rod 62. A second elastic element 64 is provided between the L-shaped mating plate 63 and the support plate 61. The second elastic element 64 in this application can be a spring. The linkage component 65 is located inside the processing tank 1 and is used to drive the two L-shaped mating plates 63 to move down intermittently.

[0038] With this design, when the drive component 53 drives the rotating shaft 51 to rotate, the rotating shaft 51 simultaneously drives the two L-shaped mating plates 63 to move down intermittently through the linkage component 65. When the L-shaped mating plates 63 move down, they will drive the vibrating rod 62 to move down, and the second elastic element 64 will be stretched and deformed. When the linkage component 65 no longer acts on the L-shaped mating plates 63, the rebound force of the second elastic element 64 will drive the L-shaped mating plates 63 and the vibrating rod 62 to move up and generate an up-and-down vibration effect. The vibrating rod 62 will then vibrate the bottom of the filter plate 3, thus achieving the vibration effect on the filter plate 3.

[0039] By driving the two L-shaped mating plates 63 to move down intermittently through the linkage component 65, the two vibrating rods 62 will eventually vibrate the two filter plates 3 intermittently. That is, while one filter plate 3 vibrates, the other does not vibrate, and vice versa, which can better cooperate with the pressure roller 4.

[0040] In this embodiment, preferably, please refer to [reference needed]. Figure 5-6 The linkage component 65 includes: The linkage shaft 651 is rotatably mounted on the inner wall of the processing tank 1. The linkage shaft 651 is equipped with a first bevel gear 652 and two incomplete gears 653. The L-shaped mating plate 63 is provided with a toothed plate 654 that intermittently meshes with the incomplete gear 653, and the lower end of the rotating shaft 51 is provided with a second bevel gear 655 that meshes with the first bevel gear 652.

[0041] With this design, when the drive component 53 drives the rotating shaft 51 to rotate (in order to...) Figure 5 At this state, the rotating shaft 51 rotates clockwise, which drives the second bevel gear 655 to rotate. The second bevel gear 655 then drives the first bevel gear 652 and the linkage shaft 651 to rotate counterclockwise. The linkage shaft 651 drives the two incomplete gears 653 to rotate. When the incomplete gear 653 meshes with its corresponding toothed plate 654, it will drive the toothed plate 654 and the L-shaped mating plate 63 to move downward. When the incomplete gear 653 rotates to the point where it does not mesh with the toothed plate 654, the second elastic element 64 will drive the L-shaped mating plate 63 to move upward and reset.

[0042] The toothed portions of the two incomplete gears 653 are in different positions, so that when one incomplete gear 653 meshes with its corresponding toothed plate 654, the other incomplete gear 653 does not mesh with its corresponding toothed plate 654, thereby achieving intermittent downward movement of the L-shaped mating plates 63 on both sides, and ultimately achieving intermittent vibration of the two filter plates 3.

[0043] In this embodiment, preferably, please refer to [reference needed]. Figure 5-6 The upper end of the vibrating rod 62 is provided with a vibration plate 12, and the two vibration plates 12 are located below the two filter plates 3 respectively.

[0044] With this design, when the vibrating rod 62 resets and vibrates, it will vibrate the filter plate 3 through the vibrating plate 12. The vibrating plate 12 can increase the contact area with the filter plate 3, which can ensure the vibration effect while better protecting the filter plate 3 and reducing the possibility of damage to it.

[0045] In this embodiment, preferably, please refer to [reference needed]. Figure 2-3 and Figure 5 The rotating shaft 51 is also provided with a mounting base 13, on which a cleaning roller brush 14 is installed that contacts the outer wall of the pressure roller 4.

[0046] With this design, when the rotating shaft 51 drives the pressure roller 4 to rotate, the cleaning roller brush 14 will also rotate along with the rotating shaft 51. Since the pressure roller 4 is rotatably connected to the fixed seat 52, while it revolves along the axis of the rotating shaft 51 to compress phosphogypsum, the pressure roller 4 will also rotate on its own axis at certain times under force, improving the compaction effect. At the same time, when the pressure roller 4 rotates, its outer wall will be brushed by the cleaning roller brush 14, thereby cleaning away the residual phosphogypsum on the outer wall of the pressure roller 4, which can greatly prevent the accumulation of residue on the pressure roller 4 and improve its performance.

[0047] In this embodiment, preferably, please refer to [reference needed]. Figure 3 and Figure 8-9 The cleaning roller brush 14 has a mounting rod 15 at one end, a positioning block 16 on the mounting rod 15, and a mounting hole 17 adapted to the mounting rod 15 at the end of the mounting base 13. A positioning groove 18 adapted to the positioning block 16 is opened in the mounting hole 17, and a bolt 19 for pressing the mounting rod 15 is installed on the mounting base 13.

[0048] With this design, when installing the sweeping roller brush 14, the mounting rod 15 is inserted into the mounting hole 17, and the positioning block 16 is aligned with the positioning groove 18, which radially limits the mounting rod 15. Then, by tightening the bolt 19, it is pressed against the outer wall of the mounting rod 15, thereby axially limiting the mounting rod 15, thus completing the installation and fixing of the mounting rod 15 and the sweeping roller brush 14. Disassembly is similar; first, loosen the bolt 19, and then remove the mounting rod 15 from the mounting hole 17. The installation and disassembly process of the sweeping roller brush 14 is simple and quick, facilitating subsequent cleaning or replacement of the sweeping roller brush 14.

[0049] After a period of use, the side of the cleaning roller brush 14 that contacts the pressure roller 4 may no longer provide adequate cleaning. In this case, first remove the mounting rod 15 from the mounting hole 17, then rotate the mounting hole 17 and the cleaning roller brush 14 so that the non-working position of the cleaning roller brush 14 is turned downwards. Next, insert the positioning block 16 of the mounting rod 15 into the corresponding positioning groove 18, and then reinstall and fix the mounting rod 15. Now, the cleaning roller brush 14 can be used to continue cleaning the outer wall of the pressure roller 4. The angle and position of the cleaning roller brush 14 can be changed multiple times, ensuring that the cleaning roller brush 14 gradually provides cleaning from all directions. This allows for more comprehensive and thorough utilization of the cleaning roller brush 14, reducing waste, lowering costs, and increasing practicality.

[0050] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A device for modifying treatment of phosphogypsum, characterized in that, include: The processing tank (1) has a support frame (2) inside it. Two filter plates (3) are symmetrically arranged on the support frame (2). The bottom of the filter plate (3) will move upward under force and eventually return to its original position. The pressure roller (4) is located above the filter plate (3); A rotating mechanism (5) is provided on the support frame (2) and is used to drive the pressure roller (4) to rotate; The vibration mechanism (6) is located inside the processing tank (1) and below the filter plate (3), and is used to drive the two filter plates (3) to vibrate intermittently.

2. The device for modifying phosphogypsum according to claim 1, characterized in that The rotating mechanism (5) includes: A rotating shaft (51) is rotatably disposed in the middle of the support frame (2), and a fixed seat (52) is provided on the rotating shaft (51). The pressure roller (4) is rotatably connected to the fixed seat (52). A drive component (53) is installed on the processing tank (1) and is used to drive the rotating shaft (51) to rotate.

3. The device for modifying phosphogypsum according to claim 2, characterized in that The drive component (53) includes: The cover plate (531) is detachably connected to the processing tank (1). A drive unit (532) is provided on the cover plate (531), and the output end of the drive unit (532) is connected to the rotating shaft (51).

4. The device for modifying phosphogypsum according to claim 3, characterized in that The top of the rotating shaft (51) is provided with a limiting plug (7), and the output end of the driving component (532) is provided with a connecting shaft (8). The end of the connecting shaft (8) is provided with a socket (9) that is compatible with the limiting plug (7).

5. The device for modifying phosphogypsum according to claim 1, characterized in that The inner wall of the treatment tank (1) is provided with a plurality of fixing plates (10), and the lower end of the fixing plate (10) is provided with a first elastic element (11), the lower end of the first elastic element (11) being connected to the filter plate (3).

6. The device for modifying phosphogypsum according to claim 2, characterized in that The vibration mechanism (6) includes: Two support plates (61) are provided on the inner wall of the processing tank (1). A vibrating rod (62) slides through the support plate (61). An L-shaped mating plate (63) is provided at the bottom of the vibrating rod (62). A second elastic element (64) is provided between the L-shaped mating plate (63) and the support plate (61). The linkage component (65) is located inside the processing tank (1) and is used to drive the two L-shaped mating plates (63) to move down intermittently.

7. The device for modifying phosphogypsum according to claim 6, characterized in that The linkage component (65) includes: A linkage shaft (651) is rotatably mounted on the inner wall of the processing tank (1). The linkage shaft (651) is provided with a first bevel gear (652) and two incomplete gears (653). The L-shaped mating plate (63) is provided with a toothed plate (654) that intermittently meshes with the incomplete gear (653), and the lower end of the rotating shaft (51) is provided with a second bevel gear (655) that meshes with the first bevel gear (652).

8. The device for modifying phosphogypsum according to claim 6, characterized in that The upper end of the vibrating rod (62) is provided with a vibration plate (12), and the two vibration plates (12) are respectively located below the two filter plates (3).

9. The device for modifying phosphogypsum according to claim 2, characterized in that The rotating shaft (51) is also provided with a mounting base (13), and a cleaning roller brush (14) that contacts the outer wall of the pressure roller (4) is installed on the mounting base (13).

10. The apparatus for modifying phosphogypsum according to claim 9, characterized in that, One end of the cleaning roller brush (14) is provided with a mounting rod (15), the mounting rod (15) is provided with a positioning block (16), the end of the mounting seat (13) is provided with a mounting hole (17) that is adapted to the mounting rod (15), the mounting hole (17) is provided with a positioning groove (18) that is adapted to the positioning block (16), and the mounting seat (13) is provided with a bolt (19) for pressing the mounting rod (15).

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