Box type mixing structure and method for CA-UHPC co-doped with light multi-scale fibers

Abstract

The invention discloses a box-type mixing structure and method for CA-UHPC co-doped with light multi-scale fibers, and relates to the technical field of cement processing.The box-type mixing structure comprises a processing frame, a fixing frame and a multi-term transmission mechanism are installed at the upper middle end of the right side of the processing frame, and the multi-term transmission mechanism comprises a first rotating disc, a rotating rod, a second rotating disc and a third rotating disc; the rotating rod is movably arranged in the middle of an inner cavity of the fixing frame, a first rotating disc is installed at the upper middle end of the rotating rod, a second rotating disc is installed in the middle of the rotating rod, and a third rotating disc is installed at the lower middle end of the rotating rod. The multiple transmission mechanisms are started, the multiple processing mechanisms are started through the multiple transmission mechanisms, the multiple processing mechanisms pass through the screening ends of different grades, the vibration frequency of each screening end is gradually reduced from top to bottom, aggregate of different sizes can be screened, and through different vibration frequencies, the screening efficiency is improved. And the processing efficiency of different aggregates is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cement processing, and particularly relates to a box-type mixing structure and method for CA-UHPC with compound admixture of lightweight multi-scale fibers. Background Art

[0002] Existing research shows that in the system of ultra-high performance cement concrete (Ultra-High Performance Concrete, abbreviated as UHPC) or UHPC (coarse aggregate) ultra-high performance concrete (referred to as CA-UHPC), compound admixture of polymer materials such as graphene oxide (GO), polyoxymethylene (POM) fiber, ultra-high molecular weight polyethylene fiber, nano-needle fiber, high-strength and high-modulus polyethylene fiber (PE fiber), etc. can effectively improve the microstructure of cement-based materials, thereby improving the strength and durability of UHPC, enhancing the compressive strength, chloride ion penetration resistance, reducing drying shrinkage, and improving the sulfate erosion resistance.

[0003] However, for the production of CA-UHPC, there is currently no large-scale production process for compound admixture of lightweight multi-scale fibers. It is found through investigation that in the premixing process of CA-UHPC, due to the extremely low dosage of polymer materials such as GO, POM, and PE fiber, and their lightweight characteristics of typical molecular materials such as light and fine, the requirements for weighing accuracy and dispersion in the large-scale production process are extremely high. For example, only 0.02% graphene oxide is incorporated in a certain UHPC with compound admixture of GO, and the proportion of compound admixture of PVA in a certain polyvinyl alcohol fiber (PVA) fiber-reinforced cement-based material (SHCCs) is only 0.5%, resulting in an extremely low total mass of these polymer materials incorporated in UHPC and making it impossible to control the accuracy by static weighing. In addition, due to objective production problems such as coarser particle size and large sand content of the aggregate in CA-UHPC, it is difficult to achieve precise screening of coarse and fine aggregates. Therefore, there is a gap between the performance of the finished CA-UHPC and the expected performance indicators. In summary, the problems faced by CA-UHPC with compound admixture of lightweight multi-scale fibers can be summarized as: lacking process equipment and methods for achieving fine screening and weighing of aggregates on the basis of ensuring the weighing accuracy and good dispersion of the compound admixture of fibers.

[0004] Therefore, the present invention proposes a box-type mixing structure and method for CA-UHPC with compound admixture of lightweight multi-scale fibers. Summary of the Invention

[0005] The purpose of the present invention is to provide a box-type mixing structure and method for CA-UHPC with compound admixture of lightweight multi-scale fibers to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers, including a processing frame, and a fixed frame is installed at the upper middle part on the right side of the processing frame; A multi-item transmission mechanism, the multi-item transmission mechanism includes a first turntable, a rotating rod, a second turntable and a third turntable. The rotating rod is movably arranged in the middle of the inner cavity of the fixed frame. The first turntable is installed at the upper middle part of the rotating rod, the second turntable is installed in the middle of the rotating rod, and the third turntable is installed at the lower middle part of the rotating rod; A multi-treatment mechanism, the multi-treatment mechanism includes a first sieve plate, a second sieve plate and a third sieve plate. The first sieve plate is movably installed at the upper end of the inner cavity of the processing frame, the second sieve plate is movably installed at the upper middle part of the inner cavity of the processing frame, and the third sieve plate is movably installed at the lower middle part of the inner cavity of the processing frame; A mixing treatment mechanism, the mixing treatment mechanism includes a rotating disk, an annular slide rail and an annular slide bar. The annular slide rail is installed at the bottom end of the inner cavity of the processing frame and located below the third sieve plate. The annular slide bar is slidably installed in the inner cavity of the annular slide rail, and the rotating disk is installed at the lower middle part of the rotating rod; A blanking auxiliary mechanism, the blanking auxiliary mechanism includes a mounting frame head, the mounting frame head is installed at the bottom end of the inner cavity of the fixed frame, a receiving cavity is arranged at the bottom end of the inner cavity of the processing frame, and a discharge frame head is installed at the bottom end of the processing frame.

[0007] Preferably, the multi-treatment mechanism further includes an annular sealing sheet, a universal joint, a mounting rod, a mounting spring, a mounting circular frame and a mounting ball. Annular sealing sheets are installed around the top ends of the first sieve plate, the second sieve plate and the third sieve plate. The top ends of the annular sealing sheets are connected to the inner cavity of the processing frame. Mounting circular frames are installed at the upper, upper middle and lower middle parts of the inner cavity of the processing frame. Mounting balls are movably installed in the inner cavities of the mounting circular frames. Mounting rods are installed at the top ends of the mounting balls. Universal joints are installed at the top ends of the mounting rods. The top ends of the universal joints at the upper, upper middle and lower middle parts are respectively connected to the bottom ends around the first sieve plate, the second sieve plate and the third sieve plate. Mounting springs are installed at the top ends of the mounting circular frames, and the mounting rods are located in the middle of the inner cavities of the mounting springs.

[0008] Preferably, the size of the first sieve plate is larger than the size of the second sieve plate, the size of the second sieve plate is larger than the size of the third sieve plate. The inner cavity of the mounting circular frame is of a circular structure. The gap between the outer periphery of the first sieve plate and the inner periphery of the processing frame is smaller than the gap between the outer periphery of the second sieve plate and the inner periphery of the processing frame. The gap between the outer periphery of the second sieve plate and the inner periphery of the processing frame is smaller than the gap between the outer periphery of the third sieve plate and the inner periphery of the processing frame. The sieve holes of the first sieve plate are larger than the sieve holes of the second sieve plate, and the sieve holes of the second sieve plate are larger than the sieve holes of the third sieve plate.

[0009] Preferably, the multi-stage transmission mechanism further includes a single-phase motor, a pushing inclined block, a movable ejector rod, a mounting notch, a sealing sleeve, a sliding sleeve, a return spring, and a moving inclined block. The single-phase motor is mounted on the top end inside the fixed frame through a mounting seat. The top end of the rotating rod is connected to the output shaft at the bottom end of the single-phase motor. A number of pushing inclined blocks are equidistantly mounted around the outer perimeters of the first turntable, the second turntable, and the third turntable. Movable ejector rods are mounted in the middle of the right sides of the first sieve plate, the second sieve plate, and the third sieve plate. Mounting notches are formed at the relative positions of the movable ejector rods on the right side inside the processing frame. A sliding sleeve is mounted in the middle of the right side inside the mounting notch. The right ends of the movable ejector rods all pass through the inside of the sliding sleeve and are mounted with moving inclined blocks. A sealing sleeve is mounted on the left side inside the mounting notch. The right side of the sealing sleeve is connected to the outside of the movable ejector rod. Return springs are mounted on the left sides of the moving inclined blocks. The left sides of the return springs are in contact with the right side of the processing frame.

[0010] Preferably, the size of the first turntable is larger than that of the second turntable, and the size of the second turntable is larger than that of the third turntable. A circular opening is formed in the middle of the right side inside the mounting notch. The return springs are all made of spring steel. The movable ejector rods are located inside the return springs. Mounting circular openings are formed in the middles of the first turntable, the second turntable, and the third turntable. The single-phase motor is electrically connected to an external control center.

[0011] Preferably, the mixing and processing mechanism further includes a mounting frame rod, a movable processing plate, a movable brush strip, a receiving bottom plate, a discharge solenoid valve, a fixed magnetic ring, a limiting ring strip, a fixed electromagnet, a mounting ring groove, an annular guide strip, and an annular limiting strip. A mounting frame rod is mounted in the middle of the inside of the annular slide bar. A receiving bottom plate is mounted in the middle and lower part inside the processing frame. A discharge solenoid valve is mounted in the middle of the bottom end of the receiving bottom plate. A movable processing plate is mounted at the bottom end of the mounting frame rod. A movable brush strip is mounted at the bottom end of the movable processing plate. Fixed magnetic rings are mounted in the middle of the outer perimeters of the annular slide bar. Mounting ring grooves are formed in the middle of the outer perimeters of the rotating disk. Annular guide strips are mounted around the inside of the mounting ring groove. A number of fixed electromagnets are equidistantly mounted around the inside of the mounting ring groove. Annular limiting strips are mounted around the top end and the bottom end of the rotating disk. Limiting ring strips are movably mounted outside the annular limiting strips. The sides of the limiting ring strips away from the annular limiting strips are respectively connected to the inside of the processing frame and the fixed frame. The fixed electromagnets are electromagnetically connected to an external control center.

[0012] Preferably, the mounting rod has a T-shaped structure, the receiving bottom plate has a funnel-shaped structure, a discharge opening is formed in the middle of the receiving bottom plate, the movable processing plate has an arc-shaped structure, a plurality of mixing notches are equidistantly formed in the movable processing plate, the cross section of the limiting ring strip has an L-shaped structure, a plurality of rolling balls are movably installed around the outer circumference of the annular limiting strip and around the outer circumference of the annular sliding strip, sealing brush strips are installed on one side of the top and bottom ends of the inner cavity of the annular sliding rail, and the annular guide strip is made of a metal material.

[0013] Preferably, the blanking auxiliary mechanism further includes a vortex fan head, an air delivery pipe, an air delivery check valve, and a connecting air pipe. A bearing is installed in the middle of the top end of the mounting frame head. The bottom end of the rotating rod passes through the middle of the bearing and extends inside the mounting frame head to install a vortex fan head. Air holes are formed in the middle bottom end and the middle lower end on the right side of the processing frame. A delivery port is formed in the middle of the bottom end of the fixed frame. An air delivery check valve is installed at the relative position of the air hole on the right side of the processing frame. A connecting air pipe is installed between the top and bottom air delivery check valves. An air delivery pipe is installed at the bottom end of the fixed frame. The left side of the bottom end of the air delivery pipe is connected to the top air delivery check valve, and the air delivery check valve is electrically connected to an external control center.

[0014] A processing method for a box-type mixing structure for CA-UHPC with compound admixture of lightweight multi-scale fibers includes the following steps: Step 1: During the processing of cement, first start the single-phase motor to drive the rotating rod to rotate. When the rotating rod rotates, it will drive the first turntable, the second turntable, and the third turntable to rotate simultaneously. When the first turntable, the second turntable, and the third turntable rotate, they will drive the surrounding pushing inclined blocks to rotate. When the pushing inclined blocks rotate, they will contact the inclined surfaces of the moving inclined blocks and push the moving inclined blocks to move to the left. The moving inclined blocks drive the movable ejector rods to move to the left. When the moving inclined blocks move to the left, the return springs are compressed. Later, the compressed return springs drive the moving inclined blocks and the movable ejector rods to reset. When the movable ejector rods move, they drive the sealing sleeves to move, which can not only prevent the normal movement of the movable ejector rods but also ensure the sealing performance during use. Since the size of the first turntable is larger than that of the second turntable, and the size of the second turntable is larger than that of the third turntable, the rotation period frequency of the pushing inclined blocks outside the third turntable is greater than the rotation speed of the pushing inclined blocks outside the second turntable, and the rotation speed of the pushing inclined blocks outside the second turntable is greater than the rotation speed of the pushing inclined blocks outside the first turntable. The pushing frequency generated on the movable ejector rods also gradually decreases from bottom to top; Step 2: When the movable ejector rod moves to the left, it will drive the first sieve plate, the second sieve plate, and the third sieve plate to move to the left. When moving to the left, the installation rod is driven by the universal joint to generate an inclined displacement. When the installation rod generates an inclined displacement, it will drive the installation ball to rotate inside the installation circular frame, and then the installation spring will be compressed. When the moving inclined block and the movable ejector rod lose their restraint, the installation rod is driven to reset by the compressed installation spring, and then the first sieve plate, the second sieve plate, and the third sieve plate will be driven to reset. By operating in this cycle, the first sieve plate, the second sieve plate, and the third sieve plate vibrate simultaneously. The vibration frequency of the third sieve plate is greater than that of the second sieve plate, and the vibration frequency of the second sieve plate is greater than that of the first sieve plate. When processing cement, the processed aggregate is put into the processing frame from the top of the processing frame, and then it will pass through different grades of screening ends, and the vibration frequency of each screening end gradually decreases from top to bottom. It can not only screen aggregates of different sizes, but also increase the efficiency of processing different aggregates through different vibration frequencies. It can also disperse and fall through different vibrating sieves, and can also disperse and mix different types of aggregates to increase the efficiency of subsequent processing, avoiding the situation that when processing aggregates, different-sized aggregates cannot be processed and the efficiency of aggregate processing cannot be improved. If processed separately, it will lengthen the processing time and increase the cost during the processing process; Step 3: When the rotating rod rotates, it drives the rotating disk to rotate, and the fixed electromagnet is activated to generate magnetism, making the annular guide bar generate magnetism and magnetically attract with the fixed magnetic ring. When the rotating disk rotates, it drives the annular limiting bar to slide inside the limiting ring bar, increasing the flexibility and stability of the rotating disk during rotation. When the rotating disk rotates, through the magnetic attraction, it drives the annular slide bar to slide inside the annular slide rail. When the annular slide bar rotates, it drives the installation frame rod to rotate. When the installation frame rod rotates, it drives the movable processing plate and the movable brush strip to rotate on the upper end of the receiving bottom plate, so as to mix the aggregates collected and accumulated on the upper end of the receiving bottom plate. After the processing is completed, the discharge solenoid valve is activated to discharge the processed and mixed material; Step 4: After the material is discharged into the receiving cavity, start the air intake check valve during discharging. When the rotating rod rotates, it drives the vortex fan head to rotate in the inner cavity of the installation frame head, and forms an air flow in the inner cavity of the installation frame head. Then, the air in the inner cavity of the installation frame head is transported to the inner part of the air intake check valve at the top through the air pipe, and then the gas is transported to the inner part of the air intake check valve at the bottom through the connecting air pipe, increasing the air pressure in the inner cavity of the receiving cavity and improving the feeding efficiency. When the gas blows into the receiving cavity, it contacts the mixed aggregate, and further mixing is carried out. When mixing the aggregate, it can be first mixed by stirring, and sealed processing is adopted during the mixing process to prevent dust from volatilizing into the air and polluting the external air. Before feeding, the air flow contacts the stirred aggregate, which can further carry out mixing treatment, improve the efficiency during the mixing process, and increase the efficiency during the feeding process, avoiding blockage during the feeding process and insufficient mixing of the aggregate, resulting in the situation of non-compliance in the later stage and the need for rework.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention starts multiple transmission mechanisms, and through the multiple transmission mechanisms, multiple processing mechanisms are started. Moreover, the multiple processing mechanisms pass through different levels of screening ends, and the vibration frequency of each screening end gradually decreases from top to bottom. It can not only screen aggregates of different sizes, but also increase the efficiency of processing different aggregates through different vibration frequencies. It can also disperse and fall through different vibrating screens, and can also disperse and mix different types of aggregates, increasing the efficiency of later processing. It avoids the situation that when processing aggregates, aggregates of different sizes cannot be processed and the efficiency of aggregate processing cannot be improved. If processed separately, it will lengthen the processing time and increase the cost during the processing process. The present invention also starts the mixing processing mechanism and the feeding auxiliary mechanism through multiple transmission mechanisms at the same time. When mixing the aggregate, it can be first mixed by stirring, and sealed processing is adopted during the mixing process to prevent dust from volatilizing into the air and polluting the external air. Before feeding, the air flow contacts the stirred aggregate, which can further carry out mixing treatment, improve the efficiency during the mixing process, and increase the efficiency during the feeding process, avoiding blockage during the feeding process and insufficient mixing of the aggregate, resulting in the situation of non-compliance in the later stage and the need for rework. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention.

[0017] Figure 2 It is a sectional view structure diagram of the processing frame provided by an embodiment of the present invention.

[0018] Figure 3 It is a structural diagram of the lower right middle part of the processing frame provided by the embodiment of the present invention in a sectional view.

[0019] Figure 4 It is a structural diagram of the rotating disk provided by the embodiment of the present invention in a top view.

[0020] Figure 5 It is a structural diagram of the upper right part of the processing frame provided by the embodiment of the present invention in a partial sectional view.

[0021] Figure 6 It is a structural diagram of the first rotating disk provided by the embodiment of the present invention in a top view.

[0022] Figure 7 It is the 7-day compressive strength of the CA-UHPC finished products of the comparative example and the example in Embodiment 3 of the present invention.

[0023] Figure 8 It is the 28-day compressive strength of the CA-UHPC finished products of the comparative example and the example in Embodiment 3 of the present invention.

[0024] Figure 9 It is the fluidity test result of the CA-UHPC of the comparative example and the example in Embodiment 3 of the present invention.

[0025] Figure 10 It is the 90-day autogenous shrinkage test result of the CA-UHPC finished products of the comparative example and the example in Embodiment 3 of the present invention.

[0026] In the figure: 1. Processing frame; 2. Fixed frame; 3. Multiple transmission mechanisms; 301. Single-phase motor; 302. First rotating disk; 303. Rotating rod; 304. Pushing inclined block; 305. Second rotating disk; 306. Third rotating disk; 307. Movable ejector rod; 308. Installation notch; 309. Sealing sleeve; 310. Sliding sliding sleeve; 311. Return spring; 312. Moving inclined block; 4. Multiple processing mechanisms; 401. First sieve plate; 402. Annular sealing piece; 403. Second sieve plate; 404. Third sieve plate; 405. Universal joint; 406. Installation rod; 407. Installation spring; 408. Installation ball; 409. Installation circular frame; 5. Mixing processing mechanisms; 501. Rotating disk; 502. Installation support rod; 503. Movable processing plate; 504. Movable brush strip; 505. Receiving bottom plate; 506. Discharge solenoid valve; 507. Annular slide rail; 508. Annular slide bar; 509. Fixed magnetic ring; 510. Limiting ring strip; 511. Fixed electromagnet; 512. Installation ring groove; 513. Annular guide bar; 514. Annular limiting bar; 6. Feeding auxiliary mechanisms; 601. Installation frame head; 602. Vortex fan head; 603. Air delivery pipe; 604. Air delivery check valve; 605. Connecting air pipe; 7. Discharge frame head; 8. Receiving cavity. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] Please refer to Figure 1-6 , the present invention provides a technical solution: a box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers, including a processing frame 1, and a fixed frame 2 is installed at the upper middle part on the right side of the processing frame 1; A multi-item transmission mechanism 3, the multi-item transmission mechanism 3 includes a first turntable 302, a rotating rod 303, a second turntable 305 and a third turntable 306. The rotating rod 303 is movably arranged in the middle of the inner cavity of the fixed frame 2. The first turntable 302 is installed at the upper middle part of the rotating rod 303. The second turntable 305 is installed in the middle of the rotating rod 303. The third turntable 306 is installed at the lower middle part of the rotating rod 303; A multi-stage processing mechanism 4, the multi-stage processing mechanism 4 includes a first sieve plate 401, a second sieve plate 403 and a third sieve plate 404. The first sieve plate 401 is movably installed at the upper end of the inner cavity of the processing frame 1. The second sieve plate 403 is movably installed at the upper middle part of the inner cavity of the processing frame 1. The third sieve plate 404 is movably installed at the lower middle part of the inner cavity of the processing frame 1; A mixing processing mechanism 5, the mixing processing mechanism 5 includes a rotating disk 501, an annular slide rail 507 and an annular slide bar 508. The annular slide rail 507 is installed at the bottom end of the inner cavity of the processing frame 1 below the third sieve plate 404. The annular slide bar 508 is slidably installed in the inner cavity of the annular slide rail 507. The rotating disk 501 is installed at the lower middle part of the rotating rod 303; A blanking auxiliary mechanism 6, the blanking auxiliary mechanism 6 includes a mounting frame head 601. The mounting frame head 601 is installed at the bottom end of the inner cavity of the fixed frame 2. A receiving cavity 8 is arranged at the bottom end of the inner cavity of the processing frame 1. A discharge frame head 7 is installed at the bottom end of the processing frame 1.

[0030] The multi - processing mechanism 4 further includes an annular sealing piece 402, a universal joint 405, a mounting rod 406, a mounting spring 407, a mounting circular frame 409 and a mounting spherical ball 408. Annular sealing pieces 402 are installed around the top ends of the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404. The peripheries of the top ends of the annular sealing pieces 402 are connected to the inner cavity of the processing frame 1. Mounting circular frames 409 are installed at the upper, upper - middle and middle - lower parts of the inner periphery of the inner cavity of the processing frame 1. Mounting spherical balls 408 are movably installed in the inner cavities of the mounting circular frames 409. Mounting rods 406 are installed at the top ends of the mounting spherical balls 408. Universal joints 405 are installed at the top ends of the mounting rods 406. The top ends of the universal joints 405 at the upper, upper - middle and middle - lower parts are respectively connected to the peripheries of the bottom ends of the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404. Mounting springs 407 are installed at the top ends of the mounting circular frames 409. The mounting rods 406 are located in the middle of the inner cavities of the mounting springs 407; The specific implementation method is as follows: When the movable ejector rod 307 moves to the left, it will drive the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 to move to the left. When moving to the left, the universal joint 405 drives the mounting rod 406 to generate an inclined displacement. When the mounting rod 406 generates an inclined displacement, it will drive the mounting spherical ball 408 to rotate in the inner cavity of the mounting circular frame 409, and then the mounting spring 407 will be compressed. When the moving slant block 312 and the movable ejector rod 307 lose their restraint force, the compressed mounting spring 407 drives the mounting rod 406 to reset, and then it will drive the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 to reset. By cycling the operation in turn, the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 vibrate simultaneously. The vibration frequency of the third sieve plate 404 is greater than that of the second sieve plate 403, and the vibration frequency of the second sieve plate 403 is greater than that of the first sieve plate 401. When processing cement, the processed aggregate is put into the inside of the processing frame 1 from the top of the processing frame 1, and then it will pass through different - grade screening ends, and the vibration frequency of each screening end gradually decreases from top to bottom, and it can screen aggregates of different sizes.

[0031] The size of the first sieve plate 401 is larger than that of the second sieve plate 403, and the size of the second sieve plate 403 is larger than that of the third sieve plate 404. The inner cavity of the mounting circular frame 409 is of a circular structure. The gap between the outer periphery of the first sieve plate 401 and the inner periphery of the inner cavity of the processing frame 1 is smaller than the gap between the outer periphery of the second sieve plate 403 and the inner periphery of the inner cavity of the processing frame 1. The gap between the outer periphery of the second sieve plate 403 and the inner periphery of the inner cavity of the processing frame 1 is smaller than the gap between the outer periphery of the third sieve plate 404 and the inner periphery of the inner cavity of the processing frame 1. The sieve holes of the first sieve plate 401 are larger than those of the second sieve plate 403, and the sieve holes of the second sieve plate 403 are larger than those of the third sieve plate 404; The specific implementation method is as follows: By sieve holes of different sizes, the efficiency in the screening process is increased and the time in the screening process is reduced.

[0032] The multi - drive mechanism 3 further includes a single - phase motor 301, a pushing inclined block 304, a movable ejector rod 307, a mounting notch 308, a sealing sleeve 309, a sliding sleeve 310, a return spring 311, and a moving inclined block 312. The single - phase motor 301 is mounted on the top end of the inner cavity of the fixed frame 2 through a mounting seat. The top end of the rotating rod 303 is connected to the output shaft at the bottom end of the single - phase motor 301. A number of pushing inclined blocks 304 are equidistantly mounted around the outer circumferences of the first turntable 302, the second turntable 305, and the third turntable 306. Movable ejector rods 307 are mounted in the middle of the right sides of the first sieve plate 401, the second sieve plate 403, and the third sieve plate 404. Mounting notches 308 are provided at the relative positions of the movable ejector rods 307 on the right side of the inner cavity of the processing frame 1. A sliding sleeve 310 is mounted in the middle of the right side of the inner cavity of the mounting notch 308. The right ends of the movable ejector rods 307 all pass through the inside of the sliding sleeve 310 and are internally mounted with moving inclined blocks 312. A sealing sleeve 309 is mounted on the left side of the inner cavity of the mounting notch 308. The right side of the sealing sleeve 309 is connected to the outside of the movable ejector rod 307. Return springs 311 are mounted on the left sides of the moving inclined blocks 312. The left sides of the return springs 311 are in contact with the right side of the processing frame 1; The specific implementation method is as follows: During the process of processing cement, first start the single - phase motor 301 to drive the rotating rod 303 to rotate. When the rotating rod 303 rotates, it will simultaneously drive the first turntable 302, the second turntable 305, and the third turntable 306 to rotate. When the first turntable 302, the second turntable 305, and the third turntable 306 rotate, they will drive the pushing inclined blocks 304 around them to rotate. When the pushing inclined blocks 304 rotate, they will cause the pushing inclined blocks 304 to contact the inclined surfaces of the moving inclined blocks 312 and push the moving inclined blocks 312 to move to the left. The moving inclined blocks 312 drive the movable ejector rods 307 to move to the left. When the moving inclined blocks 312 move to the left, they compress the return springs 311. Later, the compressed return springs 311 drive the moving inclined blocks 312 and the movable ejector rods 307 to reset. When the movable ejector rods 307 move, they drive the sealing sleeve 309 to move, which not only does not prevent the normal movement of the movable ejector rods 307 but also ensures the sealing performance during use. Since the size of the first turntable 302 is larger than that of the second turntable 305, and the size of the second turntable 305 is larger than that of the third turntable 306, the rotation period frequency of the pushing inclined blocks 304 outside the third turntable 306 is greater than the rotation speed of the pushing inclined blocks 304 outside the second turntable 305, and the rotation speed of the pushing inclined blocks 304 outside the second turntable 305 is greater than the rotation speed of the pushing inclined blocks 304 outside the first turntable 302, and the frequency of pushing the movable ejector rods 307 also gradually decreases from bottom to top.

[0033] The size of the first turntable 302 is larger than that of the second turntable 305, and the size of the second turntable 305 is larger than that of the third turntable 306. A circular opening is provided in the middle of the right side of the inner cavity of the installation notch 308. The return springs 311 are all made of spring steel. The movable ejector rod 307 is located in the inner cavity of the return spring 311. Circular installation openings are provided in the middle of the first turntable 302, the second turntable 305, and the third turntable 306. The single-phase motor 301 is electrically connected to an external control center; The specific implementation method is as follows: and the use of spring steel material increases the elasticity and service life of the return spring 311 during use.

[0034] The mixing and processing mechanism 5 further includes a mounting frame rod 502, a movable processing plate 503, a movable brush strip 504, a receiving bottom plate 505, a discharge solenoid valve 506, a fixed magnetic ring 509, a limiting ring strip 510, a fixed electromagnet block 511, a mounting ring groove 512, an annular guide strip 513, and an annular limiting strip 514. A mounting frame rod 502 is installed in the middle of the inner cavity of the annular slide bar 508. A receiving bottom plate 505 is installed at the lower middle part of the inner cavity of the processing frame 1. A discharge solenoid valve 506 is installed in the middle of the bottom end of the receiving bottom plate 505. A movable processing plate 503 is installed at the bottom end of the mounting frame rod 502. A movable brush strip 504 is installed at the bottom end of the movable processing plate 503. Fixed magnetic rings 509 are installed in the middle of the outer periphery of the annular slide bar 508. Mounting ring grooves 512 are provided in the middle of the outer periphery of the rotating disk 501. Annular guide strips 513 are installed around the inner cavity of the mounting ring groove 512. A number of fixed electromagnet blocks 511 are installed equidistantly around the inner cavity of the mounting ring groove 512. Annular limiting strips 514 are installed at the top and bottom peripheries of the rotating disk 501. Limiting ring strips 510 are movably installed outside the annular limiting strips 514. The sides of the limiting ring strips 510 away from the annular limiting strips 514 are respectively connected to the inner cavities of the processing frame 1 and the fixed frame 2. The fixed electromagnet blocks 511 are electromagnetically connected to an external control center; The specific implementation method is as follows: When the rotating rod 303 rotates, it drives the rotating disk 501 to rotate, and the fixed electromagnet block 511 is started to generate magnetism, so that the annular guide strip 513 generates magnetism and generates magnetic attraction with the fixed magnetic ring 509. When the rotating disk 501 rotates, it drives the annular limiting strip 514 to slide in the inner cavity of the limiting ring strip 510, increasing the flexibility and stability of the rotating disk 501 during rotation. When the rotating disk 501 rotates, through the action of magnetic attraction, it drives the annular slide bar 508 to slide in the inner cavity of the annular slide rail 507. When the annular slide bar 508 rotates, it drives the mounting frame rod 502 to rotate. When the mounting frame rod 502 rotates, it drives the movable processing plate 503 and the movable brush strip 504 to rotate on the upper end of the receiving bottom plate 505, and then the aggregate collected and accumulated on the upper end of the receiving bottom plate 505 is mixed and processed. After the processing is completed, the discharge solenoid valve 506 is started to discharge the processed and mixed material.

[0035] The mounting rod 502 is in a T-shaped structure, the receiving bottom plate 505 is in a funnel-shaped structure, a discharge opening is formed in the middle of the receiving bottom plate 505, the movable processing plate 503 is in an arc-shaped structure, a number of mixing notches are equidistantly formed in the movable processing plate 503, the cross-section of the limiting ring strip 510 is in an L-shaped structure, a number of ball bearings are movably installed on the outer periphery of the annular limiting strip 514 and the outer periphery of the annular sliding strip 508, sealing brush strips are installed on one side of the top and bottom ends of the inner cavity of the annular sliding rail 507, and the annular guide strip 513 is made of a metal material; The specific implementation manner is as follows: When the annular limiting strip 514 and the annular sliding strip 508 rotate, the ball bearings are driven to rotate, and the flexibility of the annular limiting strip 514 and the annular sliding strip 508 during rotation is increased through the rotation of the ball bearings, and the friction during the rotation process is reduced.

[0036] The blanking auxiliary mechanism 6 further includes a vortex fan head 602, an air delivery pipe 603, an air delivery one-way valve 604 and a connecting air pipe 605. A bearing is installed in the middle of the top end of the mounting frame head 601. The bottom end of the rotating rod 303 passes through the middle of the bearing and extends into the mounting frame head 601, and the vortex fan head 602 is installed inside. Air holes are formed in the middle bottom end and the middle lower end on the right side of the processing frame 1. A delivery port is formed in the middle bottom end of the fixed frame 2. An air delivery one-way valve 604 is installed at the relative position of the air hole on the right side of the processing frame 1. A connecting air pipe 605 is installed between the top and bottom air delivery one-way valves 604. An air delivery pipe 603 is installed at the bottom end of the fixed frame 2. The left side of the bottom end of the air delivery pipe 603 is connected to the top air delivery one-way valve 604, and the air delivery one-way valve 604 is electrically connected to an external control center; The specific implementation manner is as follows: When the material is discharged into the receiving cavity 8 and discharged, the air delivery one-way valve 604 is started. When the rotating rod 303 rotates, the vortex fan head 602 is driven to rotate in the inner cavity of the mounting frame head 601, and an air flow is formed in the inner cavity of the mounting frame head 601. And the air in the inner cavity of the mounting frame head 601 is delivered to the inner part of the top air delivery one-way valve 604 through the air delivery pipe 603, and the gas is delivered to the inner part of the bottom air delivery one-way valve 604 through the connecting air pipe 605, increasing the air pressure in the inner cavity of the receiving cavity 8 and improving the blanking efficiency. When the gas blows into the receiving cavity 8, the gas contacts the mixed aggregate, and further mixing is carried out.

[0037] Embodiment 2 A processing method for a box-type mixing structure for CA-UHPC with compound admixture of lightweight multi-scale fibers includes the following steps: Step 1: During the process of processing cement, first start the single-phase motor 301 to drive the rotating rod 303 to rotate. When the rotating rod 303 rotates, it will simultaneously drive the first turntable 302, the second turntable 305, and the third turntable 306 to rotate. When the first turntable 302, the second turntable 305, and the third turntable 306 rotate, they will drive the surrounding pushing slant blocks 304 to rotate. When the pushing slant blocks 304 rotate, they will make contact with the inclined surfaces of the moving slant blocks 312 and push the moving slant blocks 312 to move to the left. The moving slant blocks 312 drive the movable ejector rods 307 to move to the left. When the moving slant blocks 312 move to the left, they compress the return springs 311. Later, the compressed return springs 311 drive the moving slant blocks 312 and the movable ejector rods 307 to reset. When the movable ejector rods 307 move, they drive the sealing sleeves 309 to move, which not only does not hinder the normal movement of the movable ejector rods 307 but also ensures the sealing performance during use. Since the size of the first turntable 302 is larger than that of the second turntable 305, and the size of the second turntable 305 is larger than that of the third turntable 306, the rotation period frequency of the pushing slant blocks 304 outside the third turntable 306 is greater than the rotation speed of the pushing slant blocks 304 outside the second turntable 305, and the rotation speed of the pushing slant blocks 304 outside the second turntable 305 is greater than the rotation speed of the pushing slant blocks 304 outside the first turntable 302. The frequency of pushing the movable ejector rods 307 also gradually decreases from bottom to top; Step 2: When the movable ejector rod 307 moves to the left, it will drive the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 to move to the left. When moving to the left, the universal joint 405 drives the mounting rod 406 to generate an inclined displacement. When the mounting rod 406 generates an inclined displacement, it will drive the mounting ball 408 to rotate inside the mounting circular frame 409, and then the mounting spring 407 will be compressed. When the moving inclined block 312 and the movable ejector rod 307 lose their restraint, the compressed mounting spring 407 drives the mounting rod 406 to reset, and then drives the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 to reset. By cycling the operation in turn, the first sieve plate 401, the second sieve plate 403 and the third sieve plate 404 vibrate simultaneously. The vibration frequency of the third sieve plate 404 is greater than that of the second sieve plate 403, and the vibration frequency of the second sieve plate 403 is greater than that of the first sieve plate 401. When processing cement, the processed aggregate is put into the interior of the processing frame 1 from the top of the processing frame 1, and then it will pass through different grades of screening ends, and the vibration frequency of each screening end gradually decreases from top to bottom. It can not only screen aggregates of different sizes, but also increase the efficiency of processing different aggregates through different vibration frequencies. It can also disperse and fall through different vibrating sieves, and can also disperse and mix different types of aggregates to increase the efficiency of later processing, and avoid the situation that when processing aggregates, aggregates of different sizes cannot be processed and the efficiency of aggregate processing cannot be improved. If processed separately, it will lengthen the processing time and increase the cost during the processing process; Step 3: When the rotating rod 303 rotates, it drives the rotating disk 501 to rotate, and the fixed electromagnet 511 is activated to generate magnetism, so that the annular guide bar 513 generates magnetism and magnetically attracts the fixed magnetic ring 509. When the rotating disk 501 rotates, it drives the annular limiting bar 514 to slide inside the limiting ring bar 510, increasing the flexibility and stability of the rotating disk 501 when rotating. When the rotating disk 501 rotates, through the magnetic attraction, it drives the annular sliding bar 508 to slide inside the annular sliding rail 507. When the annular sliding bar 508 rotates, it drives the mounting frame rod 502 to rotate. When the mounting frame rod 502 rotates, it drives the movable processing plate 503 and the movable brush strip 504 to rotate on the upper end of the receiving bottom plate 505, so as to mix the aggregates collected and accumulated on the upper end of the receiving bottom plate 505. After the processing is completed, the discharge solenoid valve 506 is activated to discharge the processed and mixed material; Step 4: After the material is discharged into the receiving cavity 8, start the gas transmission check valve 604 during discharge. When the rotating rod 303 rotates, it drives the vortex fan head 602 to rotate within the inner cavity of the mounting frame head 601, forming an air current within the inner cavity of the mounting frame head 601. The air within the inner cavity of the mounting frame head 601 is transported to the inside of the gas transmission check valve 604 at the top through the gas transmission pipe 603, and then the gas is transported to the inside of the gas transmission check valve 604 at the bottom through the connecting gas pipe 605, increasing the air pressure within the inner cavity of the receiving cavity 8 and improving the efficiency of material discharging. When the gas blows into the receiving cavity 8, it contacts the mixed aggregate, and further mixing occurs. When mixing the aggregate, mixing can be carried out first by stirring, and during the mixing process, it is processed in a sealed manner to prevent dust from dispersing into the air and polluting the external air. Before discharging, the air current contacts the stirred aggregate, which can further carry out the mixing process, improve the efficiency during the mixing process, and increase the efficiency during the discharging process, avoiding blockage during the discharging process and insufficient mixing of the aggregate during the mixing process, resulting in the situation of non-compliance and the need for rework in the later stage.

[0038] Example 3

[0039] This example produces a CA-UHPC with a compound admixture of graphene oxide (GO)-steel fiber hybrid fiber. The comparative example is the CA-UHPC produced in the laboratory, and both use the same raw materials. The raw materials used in this example are as follows: P.O.52.5 grade ordinary Portland cement; polycarboxylate retardant water reducer with a water reduction rate of 25%, and a compound air-entraining agent in the water reducer; silica fume (SF) is a powdery solid with an average particle size of 0.2 μm and an effective content of ≥96%; the length of the end-hooked steel fiber used is 12 - 14 mm, and the density is 7.8 kg / m 3 ; graphene oxide (GO) is of AR grade, with parameters of high-purity grade 99.9%, and the GO compound admixture content is 0.03%; the particle size of quartz sand is 0.15 - 2.36 mm; the water is tap water. The mix proportion of the CA-UHPC in this example is shown in Table 1;

[0040] In this example, the compressive strength, fluidity, shrinkage, chloride ion penetration resistance, and sulfate ion penetration resistance of the CA-UHPC finished product are compared respectively. Combining Example 1 and Example 2, the box-type mixing structure for CA-UHPC with a compound admixture of lightweight multi-scale fibers provided by the present invention is used to complete the preparation of the CA-UHPC finished product, and the tested data are listed as example data; the CA-UHPC finished product is prepared in the laboratory using the same raw materials, and the tested data are listed as comparative example data, and are used as the target performance parameters of the CA-UHPC finished product.

[0041] (1)The test method for compressive strength was carried out with reference to the specification GB / T 50081—2002 "Standard Test Method for Mechanical Properties of Ordinary Concrete". Specimens with a size of 40mm×40mm×160mm were prepared, and the surface was covered with plastic wrap to prevent water evaporation. After being cured in a room with an ambient temperature of (20±1)°C for 24h, the formwork was removed, then sealed with plastic wrap, and cured in an environment with a temperature of (20±1)°C and a humidity ≥98% until the specified age. The test was carried out using a fully automatic press, and the loading rate was 50N / s.

[0042] A total of 10 groups of control experiments were set up for the compressive strength test. Each group of experiments had 5 parallel specimens, and the test results are shown in Figure 7 and Figure 8 . From Figure 7 , it can be seen that the 7-day average compressive strength values (target performance parameters) of the 10 groups of CA-UHPC in the comparative examples were 78.22MPa, 75.7MPa, 80.48MPa, 79.8MPa, 79.02MPa, 77.56MPa, 75.94 MPa, 79.92 MPa, 76.26MPa, 79.28MPa respectively; while the 7-day average compressive strength values in the examples were 80.48 MPa, 78.42 MPa, 78.0 MPa, 77.76 MPa, 79.2 MPa, 80.3 MPa, 80.3 MPa, 80.3 MPa, 82.5 MPa, 77.56 MPa, 79.42 MPa respectively. The two levels were close, and the difference in the average value of 50 samples < 0.8MPa. Similarly, from Figure 8 , it can be seen that the 28-day average compressive strength values (target performance parameters) of the 10 groups of CA-UHPC in the comparative examples were 124.28MPa, 124.3MPa, 126.84MPa, 122.94MPa, 123.82MPa, 123.86MPa, 126.68 MPa, 123.34MPa, 124.66 MPa, 125.8MPa respectively; while the 28-day average compressive strength values in the examples were 122.46 MPa, 122.96 MPa, 126.08MPa, 126.44 MPa, 124.56 MPa, 124.34 MPa, 123.68 MPa, 124.1MPa, 123.72MPa, 124.48 MPa respectively. The two levels were close, and the difference in the average value of 50 samples < 0.5MPa. It shows that the CA-UHPC finished products produced by the structure provided by the present invention are close to the laboratory indicators in terms of the average value of the compressive strength index.

[0043] (2) The test method for fluidity refers to the standard GB / T 2419—2005 "Determination Method for Fluidity of Cement Mortar". The fresh paste is filled into the frustum cone mold (upper mouth diameter 70mm, lower mouth diameter 100mm, height 60mm) in two portions, and tamped with a tamper. Finally, it is placed on the vibrating table and vibrated 25 times. The diameters in two mutually perpendicular directions at the bottom are measured using a caliper, and the average value is taken as the result.

[0044] A total of 10 groups of control experiments were set up for the fluidity test. Each group of experiments had 5 parallel specimens. The test results are shown in Figure 9 . From Figure 9 it can be seen that the average values of the fluidity (target performance parameter) of 10 groups of CA-UHPC in the comparative examples were 238.8mm, 236.2mm, 241.8 mm, 240.8 mm, 235.6 mm, 240.4 mm, 243.4 mm, 236.0 mm, 242.6 mm, and 238.6 mm respectively. The standard deviation range of each group of data was 7.52 - 14.56; while the fluidity of the examples was 242.6 mm, 236.0 mm, 240.0mm, 235.6 mm, 240.8 mm, 241.8 mm, 237.8 mm, 239.8 mm, 239.4 mm, and 243.4 mm respectively. The standard deviation range of each group of data was 7.94 - 12.55. Comparing the average values of the fluidity of the comparative examples and the examples, the sample variance of the method provided by the present invention is lower, which indicates that the fluidity dispersion of the paste in the CA-UHPC finished product is smaller. This is because the device provided by the present invention realizes the accurate weighing and uniform blowing of GO, while in the laboratory molding, this step generally relies on manual or simple equipment, and the good dispersion of GO cannot be achieved; in addition, the average value of the fluidity of 50 sample data in the comparative examples was 239.18, and the average value of the fluidity of 50 sample data in the examples was 230.38, a decrease of 3.97%; this is because GO itself can accelerate the setting of cement and reduce the fluidity of the paste, which verifies the beneficial effects of the present invention from the side, and the production process has a high reliability.

[0045] (3) The test method for autogenous shrinkage refers to the standard T / CECS 864——2021 "Test Method Standard for Ultra-High Performance Concrete". Prismatic specimens with dimensions of 100mm×100mm×515mm are used for the test in a constant temperature and humidity environment with a temperature of (20±2)°C and a relative humidity of (60±5)%.

[0046] The autogenous shrinkage of the formed CA-UHPC is monitored at 7d, 14d, 21d, 28d, 50d, and 90d respectively. Each group of experiments has 5 parallel specimens. The test results are shown in Figure 10 and Table 2. From Figure 10It can be seen that the shrinkage rate change trends of the control examples and the examples are in good agreement, and the differences in the average shrinkage rates at 7d, 14d, 21d, 28d, 50d, and 90d are all ≤ 33×10-6, with good control. Considering the compressive strength and fluidity data, it is considered that the production equipment and method provided by the present invention have reliability;

[0047] (4)The test method for chloride ion penetration resistance refers to the standard GB / T 50082—2009 "Standard Test Method for Long-Term Performance and Durability of Ordinary Concrete". Using the RCM method, under the condition of applied voltage, measure the depth of chloride ions penetrating into the interior of the imprinting solution, and calculate the chloride ion migration coefficient based on the penetration depth, applied voltage, test time, test temperature, etc.

[0048] A total of 10 groups of control experiments were set up for the chloride ion penetration resistance test. Each group of experiments had 5 parallel specimens, and the test results are shown in Table 3. As can be seen from Table 3, the average values of the chloride ion diffusion coefficients (target performance parameters) of 10 groups of CA-UHPC in the comparative examples were 2.106×10 -13 m 2 / s, 2.11×10 -13 m 2 / s, 2.084×10 -13 m 2 / s, 2.046×10 -13 m 2 / s, 2.03×10 -13 m 2 / s, 2.096×10 -13 m 2 / s, 2.012×10 -13 m 2 / s, 2.106×10 -13 m 2 / s, 2.116×10 -13 m 2 / s, 2.126×10 -13 m 2 / s. The average value of 50 sample data was 2.0832×10 -13 m 2 / s, and the standard deviation ranges of each group of data were all < 0.01; the chloride ion diffusion coefficients of each group in the examples were 2.022×10 -13 m 2 / s, 2.094×10 -13 m 2 / s, 2.09×10 -13 m 2 / s, 2.118×10-13 m 2 / s, 2.172x10 -13 m 2 / s, 2.138x10 -13 m 2 / s, 2.096x10 -13 m 2 / s, 2.034x10 -13 m 2 / s, 2.106x10 -13 m 2 / s, 2.178x10 -13 m 2 / s, the average value of 50 sample data is 2.1048x10 -13 m 2 / s. The standard deviation range of each group of data is < 0.02. Existing studies have shown that the compound addition of GO in the UHPC structure will induce the cement hydration reaction to refine the pore size inside the concrete structure, resulting in a densification change in the internal structure, and thus reducing the chloride ion permeability coefficient of UHPC. In the comparison of the chloride ion penetration resistance performance between the comparative example and the example in this part of the experiment, the index values of the two are basically at the same level. It is considered that in terms of the chloride ion penetration resistance performance, using the method provided by the present invention can meet the expected requirements;

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers, comprising a processing frame (1), wherein a fixed frame (2) is installed at the upper middle part on the right side of the processing frame (1), and it is characterized in that: A multi-item transmission mechanism (3), the multi-item transmission mechanism (3) includes a first turntable (302), a rotating rod (303), a second turntable (305) and a third turntable (306), the rotating rod (303) is movably arranged in the middle of the inner cavity of the fixed frame (2), the first turntable (302) is installed at the upper middle part of the rotating rod (303), the second turntable (305) is installed in the middle of the rotating rod (303), and the third turntable (306) is installed at the lower middle part of the rotating rod (303); A multi-treatment mechanism (4), the multi-treatment mechanism (4) includes a first sieve plate (401), a second sieve plate (403) and a third sieve plate (404), the first sieve plate (401) is movably installed at the upper end of the inner cavity of the processing frame (1), the second sieve plate (403) is movably installed at the upper middle part of the inner cavity of the processing frame (1), and the third sieve plate (404) is movably installed at the lower middle part of the inner cavity of the processing frame (1); A mixing treatment mechanism (5), the mixing treatment mechanism (5) includes a rotating disk (501), an annular slide rail (507) and an annular slide bar (508), the annular slide rail (507) is installed at the bottom end of the inner cavity of the processing frame (1) located below the third sieve plate (404), the annular slide bar (508) is slidably installed in the inner cavity of the annular slide rail (507), and the rotating disk (501) is installed at the lower middle part of the rotating rod (303); A blanking auxiliary mechanism (6), the blanking auxiliary mechanism (6) includes a mounting frame head (601), the mounting frame head (601) is installed at the bottom end of the inner cavity of the fixed frame (2), a receiving cavity (8) is arranged at the bottom end of the inner cavity of the processing frame (1), and a discharge frame head (7) is installed at the bottom end of the processing frame (1).

2. The box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers according to claim 1, wherein: The multi-treatment mechanism (4) further includes an annular sealing sheet (402), a universal joint (405), a mounting rod (406), a mounting spring (407), a mounting round frame (409) and a mounting ball (408), annular sealing sheets (402) are installed around the tops of the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404), the tops of the annular sealing sheets (402) are connected to the inner cavity of the processing frame (1) around, mounting round frames (409) are installed at the upper, upper middle and lower middle parts around the inner cavity of the processing frame (1), mounting balls (408) are movably installed in the inner cavities of the mounting round frames (409), mounting rods (406) are installed at the tops of the mounting balls (408), universal joints (405) are installed at the tops of the mounting rods (406), the tops of the universal joints (405) at the upper, upper middle and lower middle parts are respectively connected to the bottoms around the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404), mounting springs (407) are installed at the tops of the mounting round frames (409), and the mounting rods (406) are located in the middle of the inner cavities of the mounting springs (407).

3. The box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers according to claim 2, characterized in that: The size of the first sieve plate (401) is larger than that of the second sieve plate (403), the size of the second sieve plate (403) is larger than that of the third sieve plate (404), the inner cavity of the mounting circular frame (409) is of a circular structure, the gap between the outer periphery of the first sieve plate (401) and the inner periphery of the inner cavity of the processing frame (1) is smaller than the gap between the outer periphery of the second sieve plate (403) and the inner periphery of the inner cavity of the processing frame (1), the gap between the outer periphery of the second sieve plate (403) and the inner periphery of the inner cavity of the processing frame (1) is smaller than the gap between the outer periphery of the third sieve plate (404) and the inner periphery of the inner cavity of the processing frame (1), the sieve holes of the first sieve plate (401) are larger than those of the second sieve plate (403), and the sieve holes of the second sieve plate (403) are larger than those of the third sieve plate (404).

4. A box-type mixing structure for CA-UHPC with complex-doped lightweight multi-scale fibers according to claim 1, characterized in that: The multi-drive mechanism (3) further includes a single-phase motor (301), a pushing inclined block (304), a movable ejector rod (307), a mounting notch (308), a sealing sleeve (309), a sliding sleeve (310), a return spring (311) and a moving inclined block (312). The single-phase motor (301) is installed at the top end of the inner cavity of the fixed frame (2) through a mounting seat. The top end of the rotating rod (303) is connected to the output shaft at the bottom end of the single-phase motor (301). A number of pushing inclined blocks (304) are equidistantly installed on the outer peripheries of the first turntable (302), the second turntable (305) and the third turntable (306). Movable ejector rods (307) are installed in the middle of the right sides of the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404). Mounting notches (308) are provided at the relative positions of the movable ejector rods (307) on the right side of the inner cavity of the processing frame (1). A sliding sleeve (310) is installed in the middle of the right side of the inner cavity of the mounting notch (308). The right ends of the movable ejector rods (307) all pass through the inside of the sliding sleeve (310) and are installed with moving inclined blocks (312). A sealing sleeve (309) is installed on the left side of the inner cavity of the mounting notch (308). The right side of the sealing sleeve (309) is connected to the outside of the movable ejector rod (307). Return springs (311) are installed on the left sides of the moving inclined blocks (312). The left sides of the return springs (311) are in contact with the right side of the processing frame (1).

5. A box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers according to claim 4, characterized in that: The size of the first turntable (302) is larger than that of the second turntable (305), the size of the second turntable (305) is larger than that of the third turntable (306). A circular opening is provided in the middle of the right side of the inner cavity of the mounting notch (308). The return springs (311) are all made of spring steel. The movable ejector rod (307) is located inside the return spring (311). Mounting circular openings are provided in the middles of the first turntable (302), the second turntable (305) and the third turntable (306). The single-phase motor (301) is electrically connected to an external control center.

6. The box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers according to claim 5, characterized in that: The mixing and processing mechanism (5) further includes a mounting rod (502), a movable processing plate (503), a movable brush strip (504), a receiving bottom plate (505), a discharge solenoid valve (506), a fixed magnetic ring (509), a limiting ring strip (510), a fixed electromagnetic block (511), a mounting ring groove (512), an annular guide strip (513), and an annular limiting strip (514). The middle part of the inner cavity of the annular sliding strip (508) is provided with a mounting rod (502). The lower part of the inner cavity of the processing frame (1) is provided with a receiving bottom plate (505). The middle part of the bottom end of the receiving bottom plate (505) is provided with a discharge solenoid valve (506). The bottom end of the mounting rod (502) is provided with a movable processing plate (503). The bottom end of the movable processing plate (503) is provided with a movable brush strip (504). The middle parts of the four circumferences of the outside of the annular sliding strip (508) are provided with fixed magnetic rings (509). The middle parts of the four circumferences of the outside of the rotating disk (501) are provided with mounting ring grooves (512). The four circumferences of the inner cavity of the mounting ring groove (512) are provided with annular guide strips (513). A plurality of fixed electromagnetic blocks (511) are equidistantly installed on the four circumferences of the inner cavity of the mounting ring groove (512). The top and bottom circumferences of the rotating disk (501) are both provided with annular limiting strips (514). The outside of the annular limiting strip (514) is movably provided with limiting ring strips (510). The sides of the limiting ring strips (510) away from the annular limiting strips (514) are respectively connected to the inner cavities of the processing frame (1) and the fixed frame (2). The fixed electromagnetic blocks (511) are electromagnetically connected to an external control center.

7. According to claim 6, wherein: The mounting rod (502) has a T-shaped structure. The receiving bottom plate (505) has a funnel-shaped structure. A discharge opening is provided in the middle of the receiving bottom plate (505). The movable processing plate (503) has an arc-shaped structure. A plurality of mixing notches are equidistantly provided on the movable processing plate (503). The cross-section of the limiting ring strip (510) has an L-shaped structure. A plurality of balls are movably installed on the outer circumferences of the outer circumferences of the annular limiting strip (514) and the annular sliding strip (508). Sealing brush strips are installed on one side of the top and bottom ends of the inner cavity of the annular slide rail (507). The annular guide strip (513) is made of a metal material.

8. A box-type mixing structure for CA-UHPC with compounded lightweight multi-scale fibers according to claim 7, characterized in that: The blanking auxiliary mechanism (6) further includes a turbofan head (602), an air delivery pipe (603), an air delivery check valve (604) and a connecting air pipe (605). A bearing is installed in the middle of the top end of the installation frame head (601). The bottom end of the rotating rod (303) passes through the middle of the bearing and extends inside the installation frame head (601) to install a turbofan head (602). Air holes are provided at the bottom middle and the middle lower part on the right side of the processing frame (1). A delivery port is provided at the middle of the bottom end of the fixed frame (2). An air delivery check valve (604) is installed at the relative position of the air hole on the right side of the processing frame (1). A connecting air pipe (605) is installed between the top and bottom air delivery check valves (604). An air delivery pipe (603) is installed at the bottom end of the fixed frame (2). The left side of the bottom end of the air delivery pipe (603) is connected to the top air delivery check valve (604). The air delivery check valve (604) is electrically connected to an external control center.

9. A processing method for a box-type mixing structure for CA-UHPC with compounded lightweight multi-scale fibers, characterized in that: The processing method of the box-type stirring device is applicable to the box-type mixing structure for CA-UHPC with compound-doped lightweight multi-scale fibers described in any one of claims 1-8, and includes the following steps: Step 1: During the process of processing cement, first start the single-phase motor (301) to drive the rotating rod (303) to rotate. When the rotating rod (303) rotates, it will drive the first turntable (302), the second turntable (305) and the third turntable (306) to rotate at the same time. When the first turntable (302), the second turntable (305) and the third turntable (306) rotate, it will drive the surrounding pushing inclined blocks (304) to rotate. When the pushing inclined blocks (304) rotate, the inclined surfaces of the pushing inclined blocks (304) will contact the inclined surfaces of the moving inclined blocks (312) and push the moving inclined blocks (312) to move to the left. The moving inclined blocks (312) drive the movable ejector rods (307) to move to the left. When the moving inclined blocks (312) move to the left, the return springs (311) are compressed. Later, the compressed return springs (311) drive the moving inclined blocks (312) and the movable ejector rods (307) to reset. When the movable ejector rods (307) move, they drive the sealing sleeves (309) to move, which can not only prevent the normal movement of the movable ejector rods (307), but also ensure the airtightness during use. Since the size of the first turntable (302) is larger than that of the second turntable (305), and the size of the second turntable (305) is larger than that of the third turntable (306), the rotation period frequency of the pushing inclined blocks (304) outside the third turntable (306) is greater than the rotation speed of the pushing inclined blocks (304) outside the second turntable (305), and the rotation speed of the pushing inclined blocks (304) outside the second turntable (305) is greater than the rotation speed of the pushing inclined blocks (304) outside the first turntable (302), and the pushing frequency generated on the movable ejector rods (307) gradually decreases from bottom to top; Step 2: When the movable ejector rod (307) moves to the left, it will drive the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404) to move to the left. When moving to the left, the universal joint (405) drives the mounting rod (406) to generate an inclined displacement. When the mounting rod (406) generates an inclined displacement, it will drive the mounting ball (408) to rotate inside the mounting circular frame (409), and then the mounting spring (407) will be compressed. When the moving slant block (312) and the movable ejector rod (307) lose their restraint, the compressed mounting spring (407) drives the mounting rod (406) to reset, and then drives the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404) to reset. By operating in this cycle, the first sieve plate (401), the second sieve plate (403) and the third sieve plate (404) vibrate simultaneously. The vibration frequency of the third sieve plate (404) is greater than that of the second sieve plate (403), and the vibration frequency of the second sieve plate (403) is greater than that of the first sieve plate (401). When processing cement, the processed aggregate is put into the processing frame (1) from the top of the processing frame (1). Step 3: When the rotating rod (303) rotates, it drives the rotating disk (501) to rotate, and the fixed electromagnet (511) is activated to generate magnetism, making the annular guide bar (513) generate magnetism and attracting with the fixed magnetic ring (509). When the rotating disk (501) rotates, it drives the annular limiting bar (514) to slide inside the limiting ring bar (510), increasing the flexibility and stability when the rotating disk (501) rotates. When the rotating disk (501) rotates, due to the magnetic attraction, it drives the annular sliding bar (508) to slide inside the annular sliding rail (507). When the annular sliding bar (508) rotates, it drives the mounting frame rod (502) to rotate. When the mounting frame rod (502) rotates, it drives the movable processing plate (503) and the movable brush bar (504) to rotate on the upper end of the receiving bottom plate (505), so as to mix the aggregate accumulated on the upper end of the receiving bottom plate (505). When the processing is completed, the discharge solenoid valve (506) is activated to discharge the processed and mixed material. Step 4: When the material is discharged into the receiving cavity (8), the air intake check valve (604) is activated during discharge. When the rotating rod (303) rotates, it drives the vortex fan head (602) to rotate inside the mounting frame head (601), and an air flow is formed inside the mounting frame head (601). The air inside the mounting frame head (601) is transported to the upper air intake check valve (604) through the air pipe (603), and then the gas is transported to the lower air intake check valve (604) through the connecting air pipe (605), increasing the air pressure inside the receiving cavity (8) and improving the feeding efficiency. When the gas blows into the receiving cavity (8), the gas contacts the mixed aggregate, and further mixing is carried out.

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