Phosphogypsum prefabricated component preparation device and method

Abstract

The application discloses a phosphogypsum prefabricated component preparation device and method, which comprises a bottom support, a lower mold arranged on the bottom support, guide rods arranged around the bottom support, an upper mold assembly slidably arranged on the outer wall of the guide rods and located above the lower mold, a groove arranged on the lower mold, a forming cavity template assembly arranged in the groove, and a driving element arranged on the bottom support and connected with the forming cavity template assembly. The application is provided with the forming cavity template assembly, the driving element and the template release agent coating assembly. The driving element can drive the bottom template in the forming cavity template assembly to move upward. When the bottom template moves upward to the preset position, the four side templates in the forming cavity template assembly are synchronously rotated outward to the parallel state with the bottom template. The template release agent coating assembly uniformly coats the release agent on the surfaces of the four side templates and the bottom template, thereby reducing the labor intensity.

Description

Technical Field

[0001] This invention relates to the field of phosphogypsum treatment technology, specifically to a device and method for preparing phosphogypsum precast components. Background Technology

[0002] Phosphogypsum is an industrial byproduct of the wet process production of phosphoric acid in phosphate chemical enterprises. The main component of phosphogypsum is calcium sulfate dihydrate, which is in powder form and generally appears as grayish-white, grayish-yellow, or light green. It also contains organophosphorus and sulfur-fluorine compounds, which cause significant environmental pollution. Therefore, the processing and utilization of phosphogypsum is urgently needed.

[0003] Currently, precast components (such as slabs or bricks) can be prepared by combining phosphogypsum with other raw materials (such as cement and yellow sand). In the preparation of precast components, the raw materials are usually mixed together and then processed using a preparation device, typically a mold. The raw materials enter the mold and are formed within its molding cavity. Subsequent demolding yields the phosphogypsum precast component. During operation, the large clamping force when the two mold bases are closed causes the inner wall of the formed phosphogypsum precast component to adhere firmly to the mold cavity, making subsequent demolding difficult. To solve this problem, currently, a release agent is manually applied to the inner wall of the molding cavity before the raw materials enter, facilitating demolding. However, manual application is cumbersome and increases labor intensity. Therefore, we propose a phosphogypsum precast component preparation device and method. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for preparing phosphogypsum precast components to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A phosphogypsum precast component preparation device includes a bottom support, a lower mold disposed on the bottom support, guide rods disposed around the bottom support, and an upper mold assembly slidably sleeved on the outer wall of the guide rods and located above the lower mold. It also includes a groove opened on the lower mold, wherein a molding cavity template assembly is disposed in the groove and a driving component disposed on the bottom support and connected to the molding cavity template assembly.

[0007] The molding cavity template assembly includes a bottom template. The bottom template has grooves on all four outer walls. Side templates perpendicular to the bottom template are provided in the grooves through a rotating shaft and a torsion spring. The inner walls of the four sets of side templates and the top outer wall of the bottom template cooperate to form a molding cavity for a phosphogypsum precast component with a rectangular vertical cross-section at the top. The driving component is used to drive the bottom template to move upward, and when the bottom template moves upward to a preset position, the four side templates rotate outward synchronously to a state parallel to the bottom template.

[0008] The preparation apparatus also includes a template release agent coating component, which is located on one side of the lower mold and is used to apply release agent to the surfaces of the bottom template and the side template after the side template is rotated to be parallel with the bottom template.

[0009] A further improvement is that the upper mold assembly includes an upper mold base, an upper mold bottom plate located below the upper mold base and adapted to the molding cavity of the phosphogypsum preform, and an injection pipe penetrating the upper mold base and the upper mold bottom plate for allowing the raw materials for preparing the phosphogypsum preform to enter the molding cavity of the phosphogypsum preform.

[0010] A further improvement is that the driving component includes a hollow seat located below the bottom template, a rotating device located at the bottom of the hollow seat, a driving gear located at the output end of the rotating device and inside the hollow seat, four sets of shafts arranged in a circular array vertically outside the driving gear and located in the inner cavity of the hollow seat, and a driven gear located on the outer wall of the shafts and meshing with the driving gear. The outer walls of the four sets of shafts are all wound with pull ropes, and the four sets of pull ropes all pass through the outer wall of the hollow seat and are respectively connected to the top of the outer side of the corresponding side template. The rotating device is located on a connecting frame, and the connecting frame movably passes through the bottom of the groove and is connected to the output end of the telescopic device located on the bottom support.

[0011] A further improvement is that the template release agent coating assembly includes an electric slide rail symmetrically arranged on two opposite side walls of the lower mold, a support frame arranged on the electric slide rail, a hollow roller arranged between the two support frames, and a hollow shaft arranged at both ends of the hollow roller and communicating with the inner cavity of the hollow roller. The end of the hollow shaft away from the hollow roller is movably connected to the support frame and is connected to an external pump body and a release agent liquid source through a liquid inlet device.

[0012] The outer wall of the hollow roller is uniformly provided with bristles and has drainage holes that communicate with the inner cavity of the hollow roller. The drainage holes are offset from the bristles.

[0013] A further improvement is that the hollow shaft is slidably connected to the vertical groove on the support frame through a slider sleeved on the outer wall. The top of the slider is rotatably connected to one end of the threaded rod, and the other end of the threaded rod is threaded through the top of the support frame and connected to a drive handwheel.

[0014] A further improvement is that an arc-shaped hollow outer cover is fitted on the upper end of the outer wall of the hollow roller, the end of the hollow outer cover is fixed to the slider, and the two ends of the hollow outer cover are symmetrically inclined with air outlet protrusions that communicate with the inner cavity of the hollow outer cover.

[0015] The liquid inlet device includes a guide seat fixedly disposed on the outside of the slider, an impeller rotatably disposed in the guide seat via a shaft, and an air duct housing disposed on the outside of the guide seat. The liquid outlet end of the guide seat is connected to the hollow shaft, and the liquid inlet end of the guide seat is connected to the output end of an external pump body via a connecting hose. One end of the shaft extends into the air duct housing and is provided with an air fan blade. The air inlet end and air outlet end of the air duct housing are respectively provided with an air inlet pipe and an air outlet pipe, and the other end of the air outlet pipe is connected to the inner cavity of the hollow outer casing.

[0016] A further improvement is that the air outlet end of the air outlet protrusion is inclined to the side away from the hollow roller, and a heat-conducting element is provided in one group of the air outlet protrusions.

[0017] A method for preparing phosphogypsum precast components, utilizing the aforementioned phosphogypsum precast component preparation apparatus, specifically includes the following steps:

[0018] S1: The bottom template is driven to move upward by the driving component. When the bottom template moves upward to the preset position, the four side templates rotate outward synchronously to a state parallel to the bottom template. The template release agent coating component applies release agent to the surface of the bottom template and the side templates.

[0019] S2: After coating, the bottom template and side template are reset by the drive component, and then the upper mold assembly is made to contact the lower mold downward to close the mold. The raw material for preparing phosphogypsum preforms is added to the phosphogypsum preform molding cavity, so that the raw material is formed in the phosphogypsum preform molding cavity.

[0020] S3: After molding, the bottom template is driven upward by the drive component to push the molded phosphogypsum precast component upward. At the same time, the four side templates rotate outward synchronously to separate from the side wall of the molded phosphogypsum precast component. At this time, the phosphogypsum precast component is removed for the next curing work.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention comprises a molding cavity template assembly, a driving component, and a template release agent coating assembly. The driving component drives the bottom template in the molding cavity template assembly to move upward. When the bottom template moves upward to a preset position, the four side templates in the molding cavity template assembly simultaneously rotate outward to a state parallel to the bottom template. This facilitates the template release agent coating assembly to evenly coat the release agent onto the surfaces of the four side templates and the bottom template, reducing manual labor intensity. It also facilitates the separation of the phosphogypsum precast component from the side templates after molding, improving subsequent demolding efficiency and quality. Furthermore, the template release agent coating assembly used in this invention not only evenly coats the surfaces of the four side templates and the bottom template with release agent, but also cleans the surfaces of the side templates and the bottom template before applying the release agent, and assists in drying the release agent applied to the surfaces of the side templates and the bottom template after application. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Structural sectional view;

[0025] Figure 3 This is a schematic diagram of the molding cavity template assembly structure in this invention;

[0026] Figure 4 For the present invention Figure 3 The structural sectional view in the middle;

[0027] Figure 5 This is a schematic diagram of the template release agent coating component structure in this invention;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the middle section from another perspective.

[0029] In the diagram: 1. Bottom support; 2. Lower mold; 3. Guide rod; 4. Upper mold assembly; 5. Injection pipe; 6. Groove; 7. Bottom template; 8. Side template; 9. Hollow seat; 10. Rotating device; 11. Drive gear; 12. Pull rope; 13. Connecting frame; 14. Telescopic device; 15. Electric slide rail; 16. Support frame; 17. Hollow roller; 18. Threaded rod; 19. Hollow outer cover; 20. Guide seat; 21. Air intake shell; 22. Air outlet pipe; 23. Air outlet protrusion; 24. Heat-conducting component; 25. Connecting hose. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] Please see the appendix Figure 1 - Appendix Figure 4 A phosphogypsum precast component preparation device includes a bottom support 1, a lower mold 2 disposed on the bottom support 1, guide rods 3 disposed around the bottom support 1, and an upper mold assembly 4 slidably sleeved on the outer wall of the guide rods 3 and located above the lower mold 2. The upper mold assembly 4 is specifically driven by a hydraulic telescopic device disposed on an external frame to move up and down relative to the lower mold 2.

[0033] It also includes a groove 6 opened on the lower mold 2, and a molding cavity template assembly and a driving component located on the bottom support 1 and connected to the molding cavity template assembly are provided in the groove 6;

[0034] The molding cavity template assembly includes a bottom template 7. Grooves are formed on all four outer walls of the bottom template 7, and side templates 8, perpendicular to the bottom template 7, are mounted within these grooves via a pivot and a torsion spring. Figure 4 It can be seen that the bottom of the groove and the side template 8 are both matching arcs, while the top of the side template 8 is flush with the top of the lower mold 2.

[0035] The inner walls of the four sets of side templates 8 and the outer top wall of the bottom template 7 work together to form a hollow, rectangular phosphogypsum precast component molding cavity at the top. Figure 3 It can be seen that the outer walls at both ends of the two opposite side templates 8 are respectively attached to the inner walls of the opposite side of the other two opposite side templates 8, so that the edges of the phosphogypsum precast component formed in the molding cavity of the phosphogypsum precast component are flat.

[0036] The driving component is used to drive the bottom template 7 to move upward, and when the bottom template 7 moves upward to the preset position, the four side templates 8 rotate outward synchronously to a state parallel to the bottom template 7. The preset position is that the bottom template 7 is above the lower mold 2.

[0037] The preparation device also includes a template release agent coating component, which is located on one side of the lower mold 2. It is used to apply release agent to the surface of the bottom template 7 and the side template 8 after the side template 8 is rotated to be parallel with the bottom template 7. The template release agent coating component replaces manual labor in applying the release agent, thereby reducing the intensity of manual labor and improving work efficiency.

[0038] Preferably, the upper mold assembly 4 in this embodiment includes an upper mold base, an upper mold bottom plate located below the upper mold base and adapted to the molding cavity of the phosphogypsum preform, and an injection pipe 5 penetrating the upper mold base and the upper mold bottom plate for allowing the raw materials for preparing the phosphogypsum preform to enter the molding cavity of the phosphogypsum preform.

[0039] Preferably, the driving component in this embodiment includes a hollow base 9 located below the bottom template 7, a rotating device 10 located at the bottom of the hollow base 9, a driving gear 11 located at the output end of the rotating device 10 and inside the hollow base 9, four sets of shafts arranged in a circular array vertically outside the driving gear 11 and located inside the cavity of the hollow base 9, and a driven gear located on the outer wall of the shafts and meshing with the driving gear 11. Each of the four sets of shafts has a pull rope 12 wound around its outer wall. Each of the four pull ropes 12 passes through the outer wall of the hollow base 9 and is connected to the top outer side of the corresponding side template 8. The driving component is driven by the rotating device. 10 drives the drive gear 11, which in turn drives multiple driven gears to rotate the corresponding shafts synchronously in the same direction. The shafts rotate to wind or unwind the rope 12, so that the side template 8 is flipped relative to the bottom template 7 to a horizontal or vertical state. The rotating device 10 is mounted on the connecting frame 13. The rotating device 10 is, for example, a servo motor and a reducer. The connecting frame 13 movably passes through the bottom of the groove 6 and is connected to the output end of the telescopic device 14 mounted on the bottom support 1. The telescopic device 14 is used to drive the bottom template 7 to move the side template 8 up or down.

[0040] Please see the appendix Figure 5 - Appendix Figure 6 As a preferred embodiment, the template release agent coating assembly includes an electric slide rail 15 symmetrically arranged on two opposite side walls of the lower mold 2, a support frame 16 arranged on the electric slide rail 15, a hollow roller 17 arranged between the two support frames 16, and a hollow shaft arranged at both ends of the hollow roller 17 and communicating with the inner cavity of the hollow roller 17. The end of the hollow shaft away from the hollow roller 17 is movably connected to the support frame 16 and connected to an external pump body and a release agent liquid source through a liquid inlet device.

[0041] It should be noted that the axial length of the hollow roller 17 is greater than the distance between the opposite ends of the two opposite side templates 8 after they are rotated to a horizontal position, so as to apply the release agent to the surface of the four side templates 8 and the bottom template 7.

[0042] The outer wall of the hollow roller 17 is uniformly provided with bristles and has seepage holes that communicate with the inner cavity of the hollow roller 17. The seepage holes are staggered from the bristles.

[0043] The support frame 16 can be driven by the electric slide rail 15 to move the hollow roller 17. The pump body draws the release agent provided by the release agent liquid source into the liquid inlet device, the hollow shaft and the inner cavity of the hollow roller 17, and seeps out from the seepage hole to wet the bristles. The hollow roller 17 rotates under the action of friction and uses the bristles to evenly coat the release agent on the surface of the side template 8 and the bottom template 7. The release agent liquid source is, for example, a tank for storing release agent liquid, and the external pump body is, for example, a liquid booster pump.

[0044] Preferably, in this embodiment, the hollow shaft is slidably connected to the vertical groove opened on the support frame 16 through a slider sleeved on the outer wall. The top of the slider is rotatably connected to one end of the threaded rod 18. The other end of the threaded rod 18 is threaded through the top of the support frame 16 and connected to a drive handwheel. By rotating the drive handwheel, the threaded rod 18 is driven, so that the threaded rod 18 drives the slider to move in the vertical groove, so as to adjust the height of the hollow roller 17.

[0045] Preferably, in this embodiment, the upper end of the outer wall of the hollow roller 17 is fitted with an arc-shaped hollow outer cover 19, the end of the hollow outer cover 19 is fixed to the slider, and the two ends of the hollow outer cover 19 are symmetrically inclined with air outlet protrusions 23 that communicate with the inner cavity of the hollow outer cover 19.

[0046] The liquid inlet device includes a guide seat 20 fixedly disposed on the outside of the slider, an impeller (not shown in the figure) rotatably disposed in the guide seat 20 via a shaft, and an induced draft housing 21 disposed on the outside of the guide seat 20. The liquid outlet end of the guide seat 20 is connected to the hollow shaft, and the liquid inlet end of the guide seat 20 is connected to the output end of the external pump body through a connecting hose 25. One end of the shaft extends into the induced draft housing 21 and is provided with an induced draft fan blade (not shown in the figure). The air inlet end and the air outlet end of the induced draft housing 21 are respectively provided with an air inlet pipe and an air outlet pipe 22, and the other end of the air outlet pipe 22 is connected to the inner cavity of the hollow outer cover 19.

[0047] An external pump injects the release agent into the guide seat 20. As the liquid flows towards the hollow shaft, it drives the impeller inside the guide seat 20 to rotate. The rotation of the impeller drives the induced draft fan blades through the shaft, causing the induced draft fan blades to rotate inside the induced draft housing 21. This allows external gas to enter the induced draft housing 21 from the air inlet pipe and then enter the inner cavity of the hollow outer cover 19 from the air outlet. Subsequently, the gas is ejected from the air outlet protrusion 23. The gas ejected from one side of the air outlet protrusion 23 cleans the surface of the side template 8 and the bottom template 7 before the hollow roller 17 is coated with the release agent. The gas ejected from the other side of the air outlet protrusion 23 assists in the drying of the release agent after the hollow roller 17 is coated with the release agent.

[0048] Preferably, in this embodiment, the air outlet end of the air outlet protrusion 23 is inclined to the side away from the hollow roller 17, and a heat-conducting element 24 is provided in one set of air outlet protrusions 23. The heat-conducting element 24 is, for example, an electric heating rod or an electric heating plate, to improve the drying effect of the auxiliary release agent.

[0049] A method for preparing phosphogypsum precast components, utilizing the aforementioned phosphogypsum precast component preparation apparatus, specifically includes the following steps:

[0050] S1: Drive the bottom template 7 to move upward by the drive component. When the bottom template 7 moves upward to the preset position, the four side templates 8 rotate outward synchronously to a state parallel to the bottom template 7. Apply release agent to the surface of the bottom template 7 and the side templates 8 by the template release agent coating component.

[0051] S2: After coating, the bottom template 7 and the side template 8 are reset by the driving component, and then the upper mold assembly 4 is made to contact the lower mold 2 downward to close the mold. The raw material used to prepare the phosphogypsum preform is added to the phosphogypsum preform molding cavity, so that the raw material is formed in the phosphogypsum preform molding cavity.

[0052] S3: After molding, the bottom template 7 is driven upward by the driving component to push the molded phosphogypsum precast component upward. At the same time, the four side templates 8 rotate outward synchronously to separate from the side wall of the molded phosphogypsum precast component. At this time, the phosphogypsum precast component is taken out for the next curing work.

[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 device for preparing phosphogypsum precast components, comprising a bottom support (1), a lower mold (2) disposed on the bottom support (1), guide rods (3) disposed around the bottom support (1), and an upper mold assembly (4) slidably sleeved on the outer wall of the guide rods (3) and located above the lower mold (2), characterized in that: It also includes a groove (6) opened on the lower mold (2), wherein the groove (6) is provided with a molding cavity template assembly and a driving component provided on the bottom support (1) and connected to the molding cavity template assembly; The molding cavity template assembly includes a bottom template (7). The bottom template (7) has grooves on all four outer walls. The grooves are connected by a rotating shaft and a torsion spring to form side templates (8) perpendicular to the bottom template (7). The inner walls of the four side templates (8) and the top outer wall of the bottom template (7) work together to form a molding cavity for a phosphogypsum precast component with a rectangular vertical cross section at the top. The driving component is used to drive the bottom template (7) to move upward. When the bottom template (7) moves upward to a preset position, the four side templates (8) rotate outward synchronously to a state parallel to the bottom template (7). The preparation device also includes a template release agent coating assembly, which is located on one side of the lower mold (2) and is used to apply release agent to the surface of the bottom template (7) and the side template (8) after the side template (8) is rotated to be parallel with the bottom template (7); The driving component includes a hollow seat (9) located below the bottom template (7), a rotating device (10) located at the bottom of the hollow seat (9), a driving gear (11) located at the output end of the rotating device (10) and inside the hollow seat (9), four sets of shafts arranged in a circular array vertically outside the driving gear (11) and located in the inner cavity of the hollow seat (9), and a driven gear located on the outer wall of the shaft and meshing with the driving gear (11). The outer walls of the four sets of shafts are all wound with pull ropes (12). The four sets of pull ropes (12) all pass through the outer wall of the hollow seat (9) and are respectively connected to the top of the outer side template (8). The rotating device (10) is located on the connecting frame (13). The connecting frame (13) movably passes through the bottom of the groove (6) and is connected to the output end of the telescopic device (14) located on the bottom support (1). The template release agent coating assembly includes an electric slide rail (15) symmetrically arranged on two opposite side walls of the lower mold (2), a support frame (16) arranged on the electric slide rail (15), a hollow roller (17) arranged between the two support frames (16), and a hollow shaft arranged at both ends of the hollow roller (17) and communicating with the inner cavity of the hollow roller (17). The end of the hollow shaft away from the hollow roller (17) is movably connected to the support frame (16) and connected to an external pump body and a release agent liquid source through a liquid inlet device. The outer wall of the hollow roller (17) is uniformly provided with bristles and has seepage holes that communicate with the inner cavity of the hollow roller (17), and the seepage holes are offset from the bristles. The hollow shaft is slidably connected to the vertical groove opened on the support frame (16) through the slider sleeved on the outer wall. The top of the slider is rotatably connected to one end of the threaded rod (18). The other end of the threaded rod (18) is threaded through the top of the support frame (16) and connected to a drive handwheel. The upper end of the outer wall of the hollow roller (17) is fitted with an arc-shaped hollow outer cover (19). The end of the hollow outer cover (19) is fixed to the slider. The two ends of the hollow outer cover (19) are symmetrically inclined and have air outlet protrusions (23) that communicate with the inner cavity of the hollow outer cover (19). The liquid inlet device includes a guide seat (20) fixedly disposed on the outside of the slider, an impeller rotatably disposed in the guide seat (20) via a shaft, and an air duct (21) disposed on the outside of the guide seat (20). The liquid outlet end of the guide seat (20) is connected to the hollow shaft. The liquid inlet end of the guide seat (20) is connected to the output end of an external pump body via a connecting hose (25). One end of the shaft extends into the air duct (21) and is provided with an air fan blade. The air inlet end and the air outlet end of the air duct (21) are respectively provided with an air inlet pipe and an air outlet pipe (22). The other end of the air outlet pipe (22) is connected to the inner cavity of the hollow outer cover (19).

2. The preparation apparatus according to claim 1, characterized in that: The upper mold assembly (4) includes an upper mold base, an upper mold bottom plate located below the upper mold base and adapted to the molding cavity of the phosphogypsum preform, and an injection pipe (5) penetrating the upper mold base and the upper mold bottom plate for allowing the raw materials for preparing the phosphogypsum preform to enter the molding cavity of the phosphogypsum preform.

3. The preparation apparatus according to claim 1, characterized in that: The air outlet end of the air outlet protrusion (23) is inclined to the side away from the hollow roller (17), and a heat-conducting element (24) is provided in one of the air outlet protrusions (23).

4. A method for preparing phosphogypsum precast components, utilizing the phosphogypsum precast component preparation apparatus as described in claim 1, characterized in that: Specifically, the following steps are included: S1: Drive the bottom template (7) to move upward by the drive component. When the bottom template (7) moves upward to the preset position, the four side templates (8) rotate outward synchronously to a state parallel to the bottom template (7). Apply release agent to the surface of the bottom template (7) and the side templates (8) by the template release agent coating component. S2: After coating, the bottom template (7) and the side template (8) are reset by the drive component, and then the upper mold assembly (4) is brought down to contact the lower mold (2) to close the mold. The raw material for preparing phosphogypsum preforms is added to the phosphogypsum preform molding cavity, so that the raw material is formed in the phosphogypsum preform molding cavity. S3: After molding, the bottom template (7) is driven upward by the drive component to push the molded phosphogypsum precast component upward. At the same time, the four side templates (8) rotate outward synchronously to separate from the side wall of the molded phosphogypsum precast component. At this time, the phosphogypsum precast component is taken out for the next step of curing.

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