A kind of phosphogypsum prefabricated component and its application

Abstract

The present invention provides a phosphogypsum prefabricated component and its application. A layer of impermeable concrete is provided on the surface of the phosphogypsum, and the outer layer of impermeable concrete also includes a water hole. The structure of the water hole can realize the active outflow of water in the prefabricated component. Not only is the phosphogypsum inside passively protected by the impermeable concrete layer, but also consideration is given to how to actively drain the water in the prefabricated component if the impermeable concrete layer fails and water seeps into the prefabricated component. The creative use of active and passive waterproofing measures can make the phosphogypsum prefabricated component have a longer service life than ordinary phosphogypsum prefabricated components provided with an impermeable concrete layer, and also ensure the service strength of the phosphogypsum prefabricated component. In addition, the active drainage base is assembled at the lower part of the prefabricated component and can be reused, making the device more economical and intelligent to use.

Description

Technical Field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a phosphogypsum prefabricated component and application thereof. Background Art

[0002] Phosphogypsum is an industrial solid waste discharged during the production of wet phosphoric acid. Its main component is calcium sulfate dihydrate ( To address the environmental issues caused by the storage and disposal of phosphogypsum, many technologies for the development and application of phosphogypsum resource recovery have emerged in the prior art. For example, Patent Document 1 discloses a method and apparatus for preparing pavement bricks containing phosphogypsum blocks, wherein the phosphogypsum is pressed into an impermeable cement concrete shell, thereby ensuring that the phosphogypsum is protected from a decrease in compressive strength after contact with water again when the phosphogypsum is used as a pavement brick. Although the use of impermeable cement concrete as a sealed shell to seal the phosphogypsum in a sealed space can prevent water penetration to a certain extent, as time goes by or when the pavement brick is subjected to external force and the shell breaks or cracks occur, water entering the shell from the upper part will continue to soak the phosphogypsum. At this time, the sealed shell will prevent the water from being discharged, further worsening the environment in which the phosphogypsum is located. At the same time, before pressing the phosphogypsum into the concrete shell, it does not consider whether there is residual water in the concrete shell, nor does it consider that the phosphogypsum will release a certain amount of water after being pressed into the concrete shell. If the brick manufacturing process of Patent Document 2 is followed, some water will inevitably remain in the shell, which will inevitably cause the strength of the phosphogypsum to decrease. Patent Document 1 only considers how to prevent water penetration, but if water penetration occurs, it will not be considered. Applicable again; further, patent document 2 discloses a water-retaining, cooling and water-cutting brick and its manufacturing method. In order to alleviate the urban heat island effect, the top surface of the brick is used as a permeable surface layer 1, and the bottom of the brick is set as a hard protective layer 3, and an overflow port 4 is provided on the arc-shaped top surface of the hard protective layer 3. The overflow port is provided so that the water in the hard protective layer 3 will not accumulate too much, which can ensure that there is enough water in the brick and achieve the purpose of transparency. Although the overflow port is provided at the bottom of the brick to allow the water in the brick to seep out, it is only a simple There is only one opening, and the purpose of setting the opening is only to ensure that there is enough water in the brick; for example, Patent Document 3 discloses a production process for high-dosage phosphogypsum unfired bricks, which is obtained by transferring the bricks to a dryer for drying and dehydration at 125°C-180°C to obtain dehydrated bricks, and then hydrating and recrystallizing them to obtain high-strength phosphogypsum unfired bricks. Although high-strength phosphogypsum bricks can be obtained, it only provides a process and does not mention the specific device structure used, and it does not take into account the problem of lower strength when exposed to water in subsequent use.

[0003] [Patent Document 1] CN113354379A;

[0004] [Patent Document 2] CN109972472A;

[0005] [Patent document 3] CN102172968A.

[0006] In the prior art, phosphogypsum has been used to make bricks. However, in order to avoid the deterioration of the performance of phosphogypsum when it comes into contact with water, the only consideration is to set up an anti-permeability cement concrete shell that passively prevents phosphogypsum from coming into contact with water. Although this can improve the problem of phosphogypsum coming into contact with water to a certain extent, it cannot actively drain the moisture in the phosphogypsum. When there is water inside the brick, it cannot drain the water inside. The accumulated moisture will soak the phosphogypsum, causing the performance of the brick to deteriorate. Based on this, the present application provides a phosphogypsum prefabricated component and its application that uses phosphogypsum for brick making and can actively drain the water in the brick body. Summary of the Invention

[0007] In order to overcome the shortcomings of existing phosphogypsum prefabricated components, the present invention provides a technical solution, a phosphogypsum prefabricated component, wherein the phosphogypsum prefabricated component is made by the following steps:

[0008] a. Fix the top and side plates on the upper side of the mold and add anti-seepage concrete into the mold;

[0009] b. driving the variable-section pressure head structure to press the anti-seepage concrete downward to form a first concrete shell. The inner side of the first concrete shell forms a trapezoidal structure with a short top and a long bottom. The length of the upper end of the first concrete shell is the same as the length of the top side plate.

[0010] c. Forming high-strength phosphogypsum inside the concrete shell;

[0011] d. Drive the mold to rotate 180 degrees to allow all the water in the high-strength phosphogypsum to flow out;

[0012] e. Remove the top side panels, pour a concrete top cover on the high-strength phosphogypsum and the concrete shell, and press it with a pressure head. Leave water holes on the concrete top cover to finally form a phosphogypsum prefabricated part.

[0013] Preferably, the variable-section pressure head structure includes a sliding pressure head, a left triangular block and a right triangular block hinged to the inner side of the sliding pressure head, and a triangular block retracting mechanism that can drive the left triangular block and the right triangular block to hide or extend the sliding pressure head. Two triangular grooves are provided in the sliding pressure head, and the left triangular block and the right triangular block are respectively located in a triangular groove.

[0014] Preferably, the triangular block retraction and extension mechanism includes a drive motor, a rotating screw, a sliding nut, a left connecting rod and a right connecting rod. The drive motor is fixedly arranged in the sliding pressure head, and the output end of the drive motor is connected to the rotating screw. The drive motor can drive the rotating screw to rotate, and the sliding nut is sleeved on the outside of the rotating screw. The two ends of the left connecting rod are respectively hinged to the left triangular block and the sliding nut, and the two ends of the right connecting rod are respectively hinged to the right triangular block and the sliding nut. The upper end of the left triangular block is hinged to the sliding pressure head, and the upper end of the right triangular block is hinged to the sliding pressure head. The drive motor can drive the left triangular block and the right triangular block to synchronously extend the sliding pressure head or retract the sliding pressure head.

[0015] Preferably, the steps for forming the high-strength phosphogypsum are as follows:

[0016] a. Add phosphogypsum, cement, kaolin, yellow sand and water into the concrete shell, then stir, start the pressure head structure to compact, and press to form bricks;

[0017] b. Then carry out appropriate curing, spray water on the top surface of the brick, then rotate the brick 180 degrees to pour out the water and air dry, then rotate it 180 degrees again and continue spraying water, repeat this process and air dry it under natural conditions for 1-2 days to obtain air-dried bricks;

[0018] c. Drying and dehydrating the air-dried bricks at 120°C-180°C to obtain dehydrated bricks;

[0019] d. After the dehydrated bricks are naturally cooled to room temperature, the opening of the concrete shell is facing upwards, and water is sprayed into the opening to make the concrete shell fully immersed in water. The mixture is soaked for 0.5h-2h to obtain hydrated barite bricks;

[0020] e. The concrete shell is rotated continuously to carry out natural curing and drying. The high-strength phosphogypsum is obtained by curing and drying under natural conditions for 1-2 days.

[0021] Preferably, in order to further strengthen the bricks to form a certain early strength, in step a, Yunnan oak sap is also added to the concrete shell to achieve the purpose of enhancing the strength and performance of the component.

[0022] An application of a phosphogypsum prefabricated component, wherein the phosphogypsum prefabricated component is placed on an active drainage base for use in road paving. The active drainage base is inserted into a water through hole to actively drain water from the phosphogypsum prefabricated component when there is water in the component, while preventing the water from entering the component, thereby ensuring the service life and usage strength of the phosphogypsum prefabricated component.

[0023] Preferably, the phosphogypsum prefabricated component is a brick.

[0024] Preferably, the active drainage base includes a base shell, a water collecting bag and an elastic support plate. The water collecting bag passes through the water inlet and is fixed to the upper end of the base shell, passes through the water outlet and is fixed to the outside of the base shell, and the water collecting bag is supported on the base shell by the elastic support plate. An inlet opening control structure is provided between the water inlet and the water collecting bag, and an outlet opening control structure is provided between the water outlet and the water collecting bag. The inlet opening control structure and the outlet opening control structure are connected by an opening connecting rod. When the amount of water in the water collecting bag is large enough, the elastic support plate that moves downward can drive the opening opening control structure and the inlet opening control structure to move, thereby controlling the opening size of the water inlet and the water outlet, sucking water from the water inlet, and then discharging it from the water outlet. After a certain amount of water in the water collecting bag is discharged, the elastic support plate can recover, thereby automatically draining water to ensure dryness inside the brick body.

[0025] Preferably, the outlet opening control structure includes a lower left clamping rod, a lower right clamping rod and a return spring, the lower left clamping rod and the lower right clamping rod are both arranged in the elastic support plate, and can slide left and right relative to the elastic support plate, and guide rails are provided on the left and right side walls of the base shell, the return spring is fixedly arranged between the lower left clamping rod and the elastic support plate, and between the lower right clamping rod and the elastic support plate, the left end of the lower left clamping rod is driven by the return spring to always contact the guide rail, and the right end of the lower right clamping rod is driven by the return spring to always contact the guide rail, the right end of the lower left clamping rod and the left end of the lower right clamping rod adjust the opening size or closing of the water collecting bag at the water outlet.

[0026] Preferably, the inlet opening control structure includes an upper support plate, an upper left clamping rod, an upper right clamping rod and a return spring. The upper end of the water collecting bag passes through the upper support plate. The upper left clamping rod and the upper right clamping rod are both arranged in the upper support plate and can slide left and right relative to the upper support plate. The return spring is fixedly arranged between the upper left clamping rod and the upper support plate, and between the upper right clamping rod and the upper support plate. The left end of the upper left clamping rod is driven by the return spring to always contact the guide plate slide rail, and the right end of the upper right clamping rod is driven by the return spring to always contact the guide plate slide rail. The right end of the upper left clamping rod and the left end of the upper right clamping rod adjust the opening size or closing of the water collecting bag at the water inlet.

[0027] The beneficial effects of the present invention are:

[0028] 1) In the phosphogypsum prefabricated component of the present invention, phosphogypsum is used to manufacture pavement bricks. First, a closed shell composed of impermeable cement concrete is prepared. Then, phosphogypsum is poured into the closed shell and pressed into a phosphogypsum block. The phosphogypsum block is fitted with the closed shell to improve the overall structural strength of the brick. After the phosphogypsum block solidifies for a period of time, the closed shell is rotated 180 degrees to allow all moisture in the phosphogypsum block and the closed shell to be poured out, thereby preventing residual moisture from affecting the formed brick.

[0029] 2) The phosphogypsum prefabricated component of the present invention takes into account that the closed shell needs to be rotated 180 degrees. In order to prevent the phosphogypsum from falling out, when the closed shell is formed, the inner wall of the shell is formed into a ladder-shaped structure with a small opening and a large bottom. The molded pressure head can form the ladder-shaped structure in one go, and no additional operations are required. Only the molded part needs to be pressed.

[0030] 3) After the phosphogypsum is completely drained, it is turned 180 degrees so that the opening of the closed shell faces upward, and finally the top cover of the closed shell is cast. The top cover includes a water hole, which is used to drain water out of the closed shell when there is water in the closed shell. The bottom of the closed shell is also provided with an active drainage base. The active drainage base can guide the water in the closed shell into it, and when the water accumulates to a certain amount, it can automatically spray the water out. Since the water has a certain spray force when it is discharged, it will not allow water to be absorbed from this place. Compared with the existing passive water blocking, it can ensure the environment of the phosphogypsum and ensure the strength of the phosphogypsum.

[0031] 4) Furthermore, the active drainage base is used in conjunction with a brick body with a closed shell, and the active drainage base can be reused multiple times. After the brick body is damaged, it can be used in conjunction with a new brick body. A water collection bag is provided in the active drainage base. The water collection bag includes a water inlet and a water outlet distributed above and below. The water inlet is connected to the water hole of the top cover, and the water outlet is used to spray the water in the water collection bag out of the base. When the water in the water collection bag exceeds a certain amount, the water inlet and the water outlet can be automatically opened or closed, thereby automatically releasing the water in the water collection bag;

[0032] 5) Furthermore, the water collection bag of the active drainage base is placed on an elastic support plate supported by an elastic member. The elastic support plate is provided with an outlet opening control structure that can control the opening and closing of the water outlet. The elastic support plate slides up and down according to the amount of water in the water collection bag. The elastic support plate slides on the guide plate slide rail. The guide plate slide rail is provided with a pre-set protrusion structure. The pre-set protrusion structure can control the size of the outlet opening control structure, thereby adjusting the opening and closing of the water outlet.

[0033] 6) Furthermore, the water inlet and the water outlet are respectively provided with an inlet opening control structure and an outlet opening control structure. Both control structures realize the opening and closing and size adjustment of the opening through a sliding rod structure. A guide wheel is provided at the end of the sliding rod structure. The guide wheel slides along the guide rail. By setting the form of the guide rail surface, the action sequence and action mode of the inlet opening control structure and the outlet opening control structure can be controlled. The form of the guide rail surface can realize intelligent control of the water collection bag.

[0034] 7) Furthermore, the mutual distance between the inlet opening control structure and the outlet opening control structure will become larger at the beginning, and then the inlet opening control structure will slide synchronously with the outlet opening control structure. With this arrangement, the inlet of the water collecting bag can generate a suction force at the beginning to suck the water in the closed shell into the water collecting bag, and then the outlet is opened and the inlet is closed, so that the water in the water collecting bag is sprayed out from the outlet, so that the water cannot be sucked in from the outlet again, ensuring that the water will not flow back from the water collecting bag into the closed shell. After the water in the water collecting bag is released, the water collecting bag becomes lighter, and the elastic part causes the elastic support plate to slide upward, thereby resetting the water collecting bag, and the inlet opening control structure and the outlet opening control structure are also reset. When the water collecting bag collects enough water again, the next cycle is carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention provides a process flow for producing phosphogypsum prefabricated components;

[0036] Figure 2 Schematic diagram of the pressure head structure used for prefabricated components;

[0037] Figure 3 Schematic diagram of the structure for installing active drainage base for phosphogypsum prefabricated components;

[0038] Figure 4 Schematic diagram of the structure of the active drainage base;

[0039] Figure 5 Schematic diagram of each clamping rod structure;

[0040] Figure 6 Schematic diagram of the guide rail structure.

[0041] Description of labels:

[0042] 1. Mold; 2. Top and side panels; 3. Anti-seepage concrete; 4. Concrete shell (I); 5. High-strength phosphogypsum; 6. Concrete top cover; 7. Water hole; 8. Sliding pressure head; 9. Left triangular block; 10. Right triangular block; 11. Triangular block retracting and extending mechanism; 12. Drive motor; 13. Rotating screw; 14. Sliding nut; 15. Left connecting rod; 16. Right connecting rod; 17. Brick body; 18. Active drainage base; 19. Base shell; 20. Water inlet; 21. Water outlet; 22. Water collection sac; 23. elastic support plate; 24. elastic support member; 25. inlet opening control structure; 26. outlet opening control structure; 27. opening connecting rod; 28. upper support plate; 29. ​​upper left clamping rod; 30. upper right clamping rod; 31. lower left clamping rod; 32. lower right clamping rod; 33. upper opening; 34. lower opening; 35. clamping rod body; 36. arc-shaped jacket; 37. guide wheel; 38. return spring; 39. guide plate slide rail; 40. triangular groove; 41. sliding groove; 42. connecting rod through groove. DETAILED DESCRIPTION

[0043] The present invention is further described below with reference to the embodiments, but the present invention is not limited in any way. Any changes or substitutions made based on the teachings of the present invention fall within the scope of protection of the present invention.

[0044] A phosphogypsum prefabricated component, such as Figure 1 As shown, the phosphogypsum prefabricated part is made by the following steps:

[0045] a. Fix the top side plate 2 on the upper side of the mold 1 and add anti-seepage concrete 3 into the mold 1;

[0046] b. Driving the variable-section pressure head structure to press the anti-seepage concrete 3 downward to form a concrete shell 4. The inner side of the concrete shell 4 forms a trapezoidal structure that is shorter at the top and longer at the bottom. The length of the upper end of the concrete shell 4 is the same as the length of the top side plate 2.

[0047] c. forming high-strength phosphogypsum 5 inside the concrete shell 4;

[0048] d. Drive the mold 1 to rotate 180 degrees so that all the water in the high-strength phosphogypsum 5 flows out;

[0049] e. Remove the top side panels 2, cast a concrete top cover b on the high-strength phosphogypsum 5 and the concrete shell 4, and press it with a pressure head. Leave water holes 7 on the concrete top cover 6 to finally form a phosphogypsum prefabricated part.

[0050] Preferably, the impermeable concrete comprises silicate cement, fly ash, river sand, rock particles with a particle size greater than 5 mm, and a water reducer.

[0051] Preferably, a rotating shaft is provided on the side of the mold 1, and the rotating shaft is driven by a motor to rotate around the rotating shaft, and the rotation can be achieved through a gear structure. This is not the focus of the present invention. As long as the rotation of the mold 1 can be achieved, it will not be repeated.

[0052] The variable cross-section pressure head structure, such as Figure 2 As shown, the pressure head structure includes a sliding pressure head 8, a left triangular block 9 and a right triangular block 10 hinged to the inner side of the sliding pressure head 8, and a triangular block retracting mechanism 11 that can drive the left triangular block 9 and the right triangular block 10 to hide or extend the sliding pressure head 8. Two triangular grooves 40 are provided in the sliding pressure head 8, and the left triangular block 9 and the right triangular block 10 are respectively located in a triangular groove 40.

[0053] The triangular block retracting and extending mechanism 11 includes a driving motor 12, a rotating screw 13, a sliding nut 14, a left connecting rod 15 and a right connecting rod 16. The driving motor 12 is fixedly arranged in the sliding pressure head 8. The output end of the driving motor 12 is connected to the rotating screw 13. The driving motor i2 can drive the rotating screw 13 to rotate. The sliding nut 14 is sleeved on the outside of the rotating screw 13. The two ends of the left connecting rod 15 are respectively hinged to the left triangular block 9 and the sliding nut 14. The two ends of the right connecting rod 16 are respectively hinged to the right triangular block 10 and the sliding nut 14. The upper end of the left triangular block 9 is hinged to the sliding pressure head 8, and the upper end of the right triangular block 10 is hinged to the sliding pressure head 8. The driving motor 12 can drive the left triangular block 9 and the right triangular block 10 to synchronously extend the sliding pressure head 8 or retract the sliding pressure head 8.

[0054] Preferably, a sliding groove 41 for the sliding nut 14 to slide is provided in the sliding pressure head 8, and a connecting rod through groove 42 for the left connecting rod 15 and the right connecting rod 16 to slide is also provided in the sliding pressure head 8.

[0055] Preferably, the sliding pressure head 8 can be driven by a hydraulic cylinder to achieve pressing of the material.

[0056] The steps for forming the high-strength phosphogypsum 5 are as follows:

[0057] a. Add phosphogypsum, cement, kaolin, yellow sand and water into the concrete shell 4, then stir, start the pressure head structure to compact, and press to form bricks;

[0058] b. Then carry out appropriate curing, spray water on the top surface of the brick, then rotate the brick 180 degrees to pour out the water and air dry, then rotate it 180 degrees again and continue spraying water, repeat this process and air dry it under natural conditions for 1-2 days to obtain air-dried bricks;

[0059] c. Drying and dehydrating the air-dried bricks at 120°C-180°C to obtain dehydrated bricks;

[0060] d. After the dehydrated bricks are naturally cooled to room temperature, the opening of the concrete shell 4 is facing upward, and water is sprayed into the opening to make the concrete shell 4 fully immersed in water. The mixture is soaked for 0.5h-2h to obtain hydrated barite bricks;

[0061] e. The concrete shell 4 is rotated continuously to perform natural curing and drying. The high-strength phosphogypsum 5 is obtained by curing and drying under natural conditions for 1-2 days.

[0062] Compared with the existing technology, since the concrete shell 4 can continuously rotate during the curing and drying process, the phosphogypsum can be fully exposed to the air. At the same time, since the internal moisture can flow out through the upper opening of the concrete shell 4, the natural curing and drying time can be reduced, ensuring that the phosphogypsum can be fully dried.

[0063] Preferably, in order to further strengthen the bricks to form a certain early strength, in step a, Yunnan oak sap is also added to the concrete shell 4 to achieve the purpose of enhancing the strength and performance of the component.

[0064] Preferably, an application of phosphogypsum prefabricated components is also provided, wherein the phosphogypsum prefabricated components are placed on an active drainage base 18 for paving a road surface, such as Figure 3-4 As shown, the active drainage base 18 is inserted into the water hole 7 to actively drain water when there is water in the phosphogypsum prefabricated component, while preventing water from entering the phosphogypsum prefabricated component, thereby ensuring the service life and usage strength of the phosphogypsum prefabricated component.

[0065] Preferably, the phosphogypsum prefabricated component is a brick body 17;

[0066] Preferably, the active drainage base 18 includes a base shell 19, a water collecting bag 22 and an elastic support plate 23. The water collecting bag 22 passes through the water inlet 20 and is fixed to the upper end of the base shell 19, passes through the water outlet 21 and is fixed to the outside of the base shell 19, and the water collecting bag 22 is supported on the base shell 19 through the elastic support plate 23. An inlet opening control structure 25 is provided between the water inlet 20 and the water collecting bag 22, and an outlet opening control structure 26 is provided between the water outlet 21 and the water collecting bag 22. The inlet opening control structure 25 is provided between the water inlet 20 and the water collecting bag 22, and the outlet opening control structure 26 is provided between the water outlet 21 and the water collecting bag 22. 5 and the outlet opening control structure 26 are connected by an opening connecting rod 27. When the water volume of the water collecting bag 22 is large enough, the elastic support plate 23 can drive the downward movement of the outlet opening control structure 26 and the inlet opening control structure 25, thereby controlling the opening size of the water inlet 20 and the water outlet 21, sucking water from the water inlet 20 and then discharging it from the water outlet 21. After a certain amount of water in the water collecting bag 22 is discharged, the elastic support plate 23 can be restored, thereby automatically draining the water to ensure the dryness of the brick body 17.

[0067] Preferably, in order to ensure the strength of the brick body when stepped on, the base shell 19 is made of a steel structure, a concrete shell, a carbon fiber material shell, a hard alloy, a stone or a PVC hard shell.

[0068] Preferably, the outlet opening control structure 26 includes a lower left clamping rod 31, a lower right clamping rod 32 and a return spring 38. The lower left clamping rod 31 and the lower right clamping rod 32 are both arranged in the elastic support plate 23 and can slide left and right relative to the elastic support plate 23. Guide rails 39 are provided on the left and right side walls of the base shell 19. The return spring 38 is fixedly arranged between the lower left clamping rod 31 and the elastic support plate 23, and between the lower right clamping rod 32 and the elastic support plate 23. The left end of the lower left clamping rod 31 is driven by the return spring 38 to always contact the guide rail 39, and the right end of the lower right clamping rod 32 is driven by the return spring 38 to always contact the guide rail 39. The right end of the lower left clamping rod 31 and the left end of the lower right clamping rod 32 adjust the opening size or closing of the water collecting bag 22 at the water outlet 21.

[0069] Preferably, the inlet opening control structure 25 includes an upper support plate 28, an upper left clamping rod 29, an upper right clamping rod 30 and a return spring 38. The upper end of the water collecting bag 22 passes through the upper support plate 28. The upper left clamping rod 29 and the upper right clamping rod 30 are both arranged in the upper support plate 28 and can slide left and right relative to the upper support plate 28. The return spring 38 is fixedly arranged between the upper left clamping rod 29 and the spring-loaded support plate 28, and between the upper right clamping rod 30 and the upper support plate 28. The left end of the upper left clamping rod 29 is driven by the return spring 38 to always contact the guide rail 39, and the right end of the upper right clamping rod 30 is driven by the return spring 38 to always contact the guide rail 39. The right end of the upper left clamping rod 29 and the left end of the upper right clamping rod 30 adjust the opening size or closing of the water collecting bag 22 at the water inlet 20.

[0070] Preferably, if Figure 5 As shown, the lower left clamping rod 31, the lower right clamping rod 32, the upper left clamping rod 29 and the upper right clamping rod 30 all include a clamping rod body 35, a guide wheel 37 and an arc-shaped sleeve 36, the guide wheel 37 is located at one end of the clamping rod body 35, and the arc-shaped sleeve 36 is located at the other end of the clamping rod body 35.

[0071] Preferably, the arc-shaped jacket 36 is a semicircular structure. Preferably, in order to be able to adaptively adjust the opening size of the water collecting bag 22 at the water inlet 20 and the water outlet 21, the two arc-shaped jackets 36 are able to cover the water collecting bag 22, and in order to be able to close the water inlet 20 or the water outlet 21, the arc-shaped jackets 36 are able to deform when being squeezed by each other, thereby closing the water inlet 20 or the water outlet 21. Preferably, the arc-shaped jacket 36 can also be a rigid structure, so that the two mutually cooperating arc-shaped jackets 36 are arranged in a staggered manner, so that the opening size of the water collecting bag 22 can be adjusted while also adjusting its closure.

[0072] Preferably, the opening link 27 is disposed between the upper right clamping rod 30 and the lower right clamping rod 32. The lower end of the opening link 27 is fixedly mounted on the lower right clamping rod 32, and the upper end of the opening link 27 is sleeved on the upper right clamping rod 30 via a sliding sleeve. Preferably, the opening link 27 is an electric, pneumatic, or hydraulic telescopic rod structure that can be remotely or intelligently controlled. Preferably, the opening link 27 can also be disposed between the upper left clamping rod and the lower left clamping rod, or between the upper support plate 28 and the elastic support plate 23.

[0073] Preferably, if Figure 6 As shown, the two guide rails 39 are mirror-symmetrical to each other along the axis of the base shell 19, and the guide rails 39 include an AB straight segment, a BD arc segment, a DF straight segment, an FH arc segment and a HI straight segment from top to bottom. When the guide wheel 37 slides in the AB straight segment, the water inlet 20 is in a fully open state. When the guide wheel 37 is located in the BD arc segment, the water inlet 20 is in a gradually decreasing state. When it is located at point D, the water inlet 20 is in a fully closed state. When the guide wheel 37 is located in the DF straight segment, the water inlet 20 and the water outlet are both in a fully closed state. When the guide wheel 37 is located in the FH arc segment, the water outlet 21 is in a gradually increasing state. When the guide wheel 37 is located in the HI straight segment, the water outlet 21 is in a fully open state.

[0074] Preferably, the BD arc segment includes a BC arc segment and a CD arc segment, the radius of the BC arc segment is r1, the radius of the CD arc segment is r2, the FH arc segment includes a FG arc segment and a GH arc segment, the radius of the FG arc segment is r3, the radius of the GH arc segment is r4, the centers of the BC arc segment and the CD arc segment are respectively located at the two ends of the BD arc segment, and the centers of the FG arc segment and the GH arc segment are respectively located at the two ends of the FH arc segment. Through the setting of the above-mentioned arc segments, the water inlet 20 can be gradually changed from open to closed, which adapts to the process of water in the brick body flowing into the water collecting bag from more to less and from fast to slow; and the water outlet 21 can be slowly opened in the process of changing from closed to open, to ensure that the water collecting bag has sufficient pressure to spray water, to prevent the surrounding water from being sucked into the water collecting bag again, and then quickly open the water outlet 21 after all the water is flushed away to achieve the purpose of sufficient drainage.

[0075] Preferably, the elastic support plate 23 is supported by an elastic support member 24 ; preferably, the elastic support member 24 is a spring or a compression spring.

[0076] Preferably, the water outlet 21 is provided at the bottom or side wall of the base shell 19 .

[0077] Preferably, the upper support plate 28 is provided with an upper opening 33 , and the water collecting bag 22 passes through the upper opening 33 ; the elastic support plate 23 is provided with a lower opening 34 , and the water collecting bag 22 passes through the lower opening 34 .

[0078] Preferably, the water collecting bag 22 is a sealed membrane structure with a certain elasticity, and its material can be polyurethane material or rubber material.

[0079] In order to enable those skilled in the art to understand the present application in detail, the working principle of the active drainage base 18 of the present application is now described as follows: After the brick body 17 is clamped on the water inlet 20, the active drainage base 18 starts to work. In the initial state, the elastic support member 24 supports the elastic support plate 23, so that the guide wheel 37 on the lower left clamping rod 31 and the lower right clamping rod 32 is located at point E of the guide plate slide rail 39, and the opening link 27 supports the guide wheel 37 on the upper left clamping rod 29 and the upper right clamping rod 28 is located at point A of the guide plate slide rail 39. At this time, the water inlet 20 is in the state of maximum opening, and the water outlet 21 is in the state of minimum opening. In this state, water flows from the brick body 17 into the water collecting bag 22. When there is water in the brick body 17, the water can be introduced into the water collecting bag 22 outside the brick body 17, thereby fundamentally avoiding the problem that the strength of the gypsum is reduced due to water in the brick body 17. When water continues to flow into the water collecting bag 22, the weight of the water collecting bag 22 continues to increase, which will compress the elastic support member 24, thereby causing the elastic support plate 23 to move downward. At this time, the descending elastic support plate 23 brings the upper support plate 28 down together through the opening link 27. At this time, the guide wheel 37 on the lower left clamping rod 31 and the lower right clamping rod 32 moves downward on the EF section of the guide plate slide rail 39. The guide wheels 37 on the upper left clamping rod 29 and the upper right clamping rod 28 slide downward synchronously on the AD section of the guide rail 39. As the water in the water collecting bag 22 continues to increase, when the guide wheels on the lower left clamping rod 31 and the lower right clamping rod 32 slide downward in the FH section, the guide wheels 37 on the upper left clamping rod 29 and the upper right clamping rod 28 slide on the DE section of the guide rail 39. At this time, the water outlet 21 is in a gradually opening state, and the water inlet 20 is gradually closed to be completely closed. Water is sprayed out from the water outlet 21. If the weight of the water in the water collecting bag 22 still exceeds the elastic support member 24, the water collecting bag 22 continues to move downward, and the guide wheels are In the HI section, the water outlet 21 is fully opened, and water continues to flow out from the water outlet 21. When a certain amount of water in the water collecting bag is released, the elastic support 24 recovers and drives the water collecting bag to slide upward, so that the guide wheels 37 on the upper left clamping rod 29 and the upper right clamping rod 28 and the guide wheels on the lower left clamping rod 31 and the lower right clamping rod 32 move upward synchronously along the guide plate slide rail 39 and finally return to their original positions. The opening link 27 can adjust the distance between the upper support plate 28 and the elastic support plate 23 according to the season or the water content in the brick body, so as to adapt to drainage in different seasons and increase the intelligence and adaptability of the equipment.

[0080] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A phosphogypsum prefabricated component, wherein the phosphogypsum prefabricated component is manufactured by the following steps: a. Fixing the top side plate (2) on the upper side of the mold (1), and adding anti-permeability concrete (3) into the mold (1); b. driving the variable cross-section pressure head structure to press the anti-seepage concrete (3) downward to form a concrete shell (4), wherein the inner side of the concrete shell (4) forms a trapezoidal structure that is short at the top and long at the bottom, and the length of the upper end of the concrete shell (4) is the same as the length of the top side plate (2); c. forming high-strength phosphogypsum (5) inside the concrete shell (4); d. driving the mold (1) to rotate 180° so that all the water in the high-strength phosphogypsum (5) flows out; e. Remove the top side plate (2), cast a concrete top cover (6) on the high-strength phosphogypsum (5) and the concrete shell (4), and press it with a pressure head, leaving a water hole (7) on the concrete top cover (6), and finally form a phosphogypsum prefabricated part; wherein, The variable cross-section pressure head structure comprises a sliding pressure head (8), a left triangular block (9) and a right triangular block (10) hinged to the inner side of the sliding pressure head (8), and a triangular block retracting mechanism (11) capable of driving the left triangular block (9) and the right triangular block (10) to hide or extend the sliding pressure head (8), wherein two triangular grooves (40) are provided in the sliding pressure head (8), and the left triangular block (9) and the right triangular block (10) are respectively located in one triangular groove (40); The triangular block retracting and unfolding mechanism (11) comprises a driving motor (12), a rotating screw (13), a sliding nut (14), a left connecting rod (15) and a right connecting rod (16). The driving motor (12) is fixedly arranged in the sliding pressure head (8). The output end of the driving motor (12) is connected to the rotating screw (13). The driving motor (12) can drive the rotating screw (13) to rotate. The sliding nut (14) is sleeved on the outside of the rotating screw (13). The two ends of the left connecting rod (15) are respectively hinged to the left triangular block (9) and the sliding nut (14), and the two ends of the right connecting rod (16) are respectively hinged to the right triangular block (10) and the sliding nut (14). The upper end of the left triangular block (9) is hinged to the sliding pressure head (8), and the upper end of the right triangular block (10) is hinged to the sliding pressure head (8). The driving motor (12) can drive the left triangular block (9) and the right triangular block (10) to synchronously extend the sliding pressure head (8) or retract the sliding pressure head (8).

2. The phosphogypsum prefabricated component according to claim 1, characterized in that: The steps for forming the high-strength phosphogypsum (5) are as follows: a. Add phosphogypsum, cement, kaolin, yellow sand and water into the concrete shell (4), then stir, start the pressure head structure to compact, and press to form bricks; b. Then carry out appropriate curing, spray water on the top surface of the brick, then rotate the brick 180 degrees to pour out the water and air dry, then rotate it 180 degrees again and continue spraying water, repeat this process and air dry it under natural conditions for 1-2 days to obtain air-dried bricks; c. Drying and dehydrating the air-dried bricks at 120°C-180°C to obtain dehydrated bricks; d. After the dehydrated bricks are naturally cooled to room temperature, the opening of the concrete shell (4) is facing upwards, and water is sprayed into the opening so that the concrete shell (4) is fully immersed in water. The mixture is soaked for 0.5h-2h to obtain hydrated barite bricks; e. The concrete shell (4) is rotated continuously to perform natural curing and drying. After curing and drying under natural conditions for 1-2 days, high-strength phosphogypsum (5) is obtained.

3. The phosphogypsum prefabricated component according to claim 2, characterized in that: In order to further strengthen the bricks to form a certain early strength, in step a, oak sap is added to the concrete shell (4).

4. A use of the phosphogypsum prefabricated component according to any one of claims 1 to 3, characterized in that: The phosphogypsum prefabricated component is placed on an active drainage base (18) for paving a road surface. The active drainage base (18) is inserted into a water hole (7) to actively drain water when there is water in the phosphogypsum prefabricated component while preventing water from entering the phosphogypsum prefabricated component, thereby ensuring the service life and use strength of the phosphogypsum prefabricated component.

5. The use of the phosphogypsum prefabricated component according to claim 4, characterized in that: The phosphogypsum prefabricated component is a brick body (17).

6. The use of the phosphogypsum prefabricated component according to claim 4, characterized in that: The active drainage base (18) includes a base shell (19), a water collecting bag (22) and an elastic support plate (23). The water collecting bag (22) passes through the water inlet (20) and is fixed to the upper end of the base shell (19), passes through the water outlet (21) and is fixed to the outside of the base shell (19). The water collecting bag (22) is supported on the base shell (19) through the elastic support plate (23). An inlet opening control structure (25) is provided between the water inlet (20) and the water collecting bag (22), and an outlet opening control structure (26) is provided between the water outlet (21) and the water collecting bag (22). The inlet opening control structure The (25) and the outlet opening control structure (26) are connected by an opening link (27). When the amount of water in the water collecting bag (22) is large enough, the elastic support plate (23) can drive the downward movement of the outlet opening control structure (26) and the inlet opening control structure (25), thereby controlling the opening size of the water inlet (20) and the water outlet (21), sucking water from the water inlet (20) and then discharging it from the water outlet (21). After a certain amount of water in the water collecting bag (22) is discharged, the elastic support plate (23) can be restored, thereby automatically draining the water and ensuring the dryness of the brick body (17).

7. The use of the phosphogypsum prefabricated component according to claim 6, characterized in that: The outlet opening control structure (26) includes a lower left clamping rod (31), a lower right clamping rod (32) and a return spring (38). The lower left clamping rod (31) and the lower right clamping rod (32) are both arranged in the elastic support plate (23) and can slide left and right relative to the elastic support plate (23). The left and right side walls of the base shell (19) are both provided with guide rails (39). The return spring (38) is fixedly arranged on the lower left clamping rod (31) and the elastic support plate. (23), and between the lower right clamping rod (32) and the elastic support plate (23), the left end of the lower left clamping rod (31) is driven by the return spring (38) to always contact the guide rail (39), and the right end of the lower right clamping rod (32) is driven by the return spring (38) to always contact the guide rail (39), and the right end of the lower left clamping rod (31) and the left end of the lower right clamping rod (32) adjust the opening size of the water collecting bag (22) at the water outlet (21) or close it.

8. The use of the phosphogypsum prefabricated component according to claim 7, characterized in that: The inlet opening control structure (25) includes an upper support plate (28), an upper left clamping rod (29), an upper right clamping rod (30) and a return spring (38). The upper end of the water collecting bag (22) passes through the upper support plate (28). The upper left clamping rod (29) and the upper right clamping rod (30) are both arranged in the upper support plate (28) and can slide left and right relative to the upper support plate (28). The return spring (38) is fixedly arranged on the upper left clamping rod (29) and the upper support plate. (28), and between the upper right clamping rod (30) and the upper support plate (28), the left end of the upper left clamping rod (29) is driven by the return spring (38) to always contact the guide rail (39), and the right end of the upper right clamping rod (30) is driven by the return spring (38) to always contact the guide rail (39), and the right end of the upper left clamping rod (29) and the left end of the upper right clamping rod (30) adjust the opening size of the water collecting bag (22) at the water inlet (20) or close it.

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