High-strength durable concrete preparation device and preparation method thereof

Abstract

The invention relates to the technical field of concrete processing, in particular to a high-strength durable concrete preparation device and a preparation method thereof.The high-strength durable concrete preparation device comprises a screening box, a screening assembly, a scraping assembly, a sealing assembly and a lifting assembly; the screening assembly comprises lower mounting seats, a fine screen mesh, supporting strips, upper mounting seats and a coarse screen mesh, the multiple lower mounting seats are detachably connected with the screening box and located in the screening box, the fine screen mesh is fixedly connected with the lower mounting seats, the multiple supporting strips are slidably connected with the screening box, the multiple upper mounting seats are detachably connected with the supporting strips, and the coarse screen mesh is located in the upper mounting seats. The coarse screen mesh and the fine screen mesh are respectively located at the tops of the supporting strips and in the middle of the upper mounting seat, the scraping assembly is connected with the fine screen mesh, the sealing assembly and the lifting assembly are respectively connected with the screening box, and the problem that when the preparation device for the composite high-strength concrete is used, the coarse screen mesh and the fine screen mesh need to be frequently replaced, and consequently the preparation efficiency of the concrete is reduced is solved.

Description

Technical Field

[0001] This invention relates to the field of concrete processing technology, and in particular to a high-strength durable concrete preparation apparatus and method. Background Technology

[0002] With the rapid development of the modern construction industry, the requirements for concrete are becoming increasingly stringent, especially for concrete used in building and highway construction in cold environments, where the strength requirements are particularly strict. Composite concrete, which is composed of organic polymers (such as resins), inorganic cementitious materials, and aggregates, can improve the strength, adhesion, and chemical corrosion resistance of concrete, and is favored by construction projects. In existing technologies, the different particle diameters of aggregates directly affect the strength of concrete during preparation, so it is necessary to screen the aggregates used in concrete preparation.

[0003] The existing publication number CN115073091B discloses a preparation device for composite high-strength concrete. This device includes an aggregate sieve and a mixing device. The aggregate sieve includes a frame plate, a motor, a feeding conveyor belt, and a sieve screen. The mixing device includes a mixing and feeding cylinder, a motor, and blades mounted on a mixing rod. This invention controls the maximum particle size of the coarse aggregate to 10-20 mm. Reducing the maximum particle size reduces stress concentration at the interface between the aggregate and the hardened cement paste, thus reducing the negative impact on interface strength. Simultaneously, it enhances the adhesion between the paste and the aggregate interface. Reducing the maximum particle size of the coarse aggregate increases the specific surface area of ​​the coarse aggregate per unit volume of concrete, increasing the interface area between the hardened cement paste and the coarse aggregate. This results in more uniform stress distribution when the concrete bears a load, improving concrete strength. The addition of admixtures further improves the physical and mechanical properties and durability of the concrete.

[0004] However, the aforementioned composite high-strength concrete preparation device requires frequent replacement of coarse and fine screens during use, which reduces the efficiency of concrete preparation. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength durable concrete preparation device and its preparation method, which solves the problem that the preparation device for composite high-strength concrete requires frequent replacement of coarse and fine screens, resulting in reduced concrete preparation efficiency.

[0006] To achieve the above objectives, the present invention provides a high-strength durable concrete preparation device, comprising a screening box, a screening assembly, a scraping assembly, a sealing assembly, and a lifting assembly; the screening assembly includes a lower mounting base, a fine screen, support bars, an upper mounting base, and a coarse screen. Multiple lower mounting bases are detachably connected to the screening box and located inside the screening box. The fine screen is fixedly connected to the lower mounting base and located in the middle of the lower mounting base. Multiple support bars are slidably connected to the screening box and located on top of the lower mounting base. Multiple upper mounting bases are detachably connected to the support bars and located on top of the support bars. The coarse screen is fixedly connected to the upper mounting base and located in the middle of the upper mounting base. The scraping assembly is connected to the fine screen. The sealing assembly and the lifting assembly are respectively connected to the screening box.

[0007] The screening assembly further includes a cover plate and limiting strips. The cover plate is detachably connected to the screening box and is located on the top of the screening box. There are multiple limiting strips, which are respectively fixedly connected to the cover plate and are located on the top of the upper mounting base.

[0008] The scraping assembly includes a limiting seat, a rotating shaft, and a rotating seat. The limiting seat is detachably connected to the fine screen and is located at the bottom of the fine screen. The rotating shaft is rotatably connected to the limiting seat and passes through the fine screen, the coarse screen, and the cover plate. There are multiple rotating seats, each of which is fixedly connected to the rotating shaft and is located on the outside of the rotating shaft.

[0009] The scraping assembly further includes an upper scraper and a lower scraper. There are two upper scrapers, which are fixedly connected to the rotating seat and located on the outside of the rotating seat. There are also two lower scrapers, which are fixedly connected to the rotating seat and located on the outside of the rotating seat.

[0010] The sealing assembly includes a sealing seat, a plug seat, and sealing bolts. There are two sealing seats, which are detachably connected to the screening box and located on the outside of the screening box. There are two plug seats, which are fixedly connected to the sealing seats and located on the inside of the sealing seats. There are multiple sealing bolts, which are threaded to the screening box and pass through the sealing seats.

[0011] The lifting assembly includes a lifting seat, a lifting shaft, and a spiral lifting cylinder. The lifting seat is fixedly connected to the screening box and located outside the screening box. The lifting shaft is rotatably connected to the lifting seat and passes through the lifting seat. The spiral lifting cylinder is fixedly connected to the lifting shaft and located inside the lifting seat.

[0012] A method for preparing high-strength durable concrete, applied to the aforementioned high-strength durable concrete preparation apparatus.

[0013] The high-strength durable concrete preparation device and method of the present invention, in use, involves installing the screening box on top of a corresponding mixing device, feeding aggregate into the screening box, and then using an external power device to drive the rotating shaft to rotate, simultaneously rotating the upper and lower scrapers. The concrete aggregate is filtered through the coarse and fine screens. The rotating upper scraper cleans the surface of the coarse screen and the inner wall of the screening box, while the rotating lower scraper cleans the surface of the fine screen and the bottom of the coarse screen. The equipment is cleaned, including the inner wall of the screening box, to prevent concrete aggregate from sticking to the surfaces of the fine and coarse screens. The lifting assembly facilitates the transport of aggregate before filtration through the fine screen to the surface of the coarse screen for further filtration, thus improving the fineness of the filtration. When it is necessary to discharge the filtered impurities, the sealing seat is opened to facilitate the cleaning of the impurities in the screening box. This solves the problem that the composite high-strength concrete preparation device requires frequent replacement of the coarse and fine screens, which leads to a decrease in the efficiency of concrete preparation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the high-strength durable concrete preparation device and preparation method according to the first embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the screening component according to the first embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the scraping assembly according to the first embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the sealing assembly according to the first embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the lifting component according to the first embodiment of the present invention.

[0020] In the diagram: 101-screening box, 102-lower mounting base, 103-fine screen, 104-support bar, 105-upper mounting base, 106-coarse screen, 107-cover plate, 108-limiting bar, 109-limiting seat, 110-rotating shaft, 111-rotating seat, 112-upper scraper, 113-lower scraper, 114-sealing seat, 115-blocking seat, 116-sealing bolt, 117-lifting seat, 118-lifting shaft, 119-spiral lifting cylinder. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] The first embodiment of this application is as follows: Please see Figures 1 to 5 ,in, Figure 1 This is a schematic diagram of the overall structure of the high-strength durable concrete preparation device and preparation method according to the first embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the screening component according to the first embodiment of the present invention. Figure 3 This is a schematic diagram of the scraping assembly according to the first embodiment of the present invention. Figure 4 This is a schematic diagram of the sealing assembly according to the first embodiment of the present invention. Figure 5 This is a schematic diagram of the lifting assembly of the first embodiment of the present invention. The present invention provides a high-strength durable concrete preparation device, including a screening box 101, a screening assembly, a scraping assembly, a sealing assembly, and a lifting assembly. The screening assembly includes a lower mounting base 102, a fine screen 103, a support bar 104, an upper mounting base 105, a coarse screen 106, a cover plate 107, and a limiting bar 108. The scraping assembly includes a limiting seat 109, a rotating shaft 110, a rotating seat 111, an upper scraper 112, and a lower scraper 113. The sealing assembly includes a sealing seat 114, a plug seat 115, and a sealing bolt 116. The lifting assembly includes a lifting seat 117, a lifting shaft 118, and a spiral lifting cylinder 119. The aforementioned solution solves the problem that the preparation device for composite high-strength concrete requires frequent replacement of the coarse and fine screens during use, which leads to a decrease in the efficiency of concrete preparation.

[0023] In this specific embodiment, there are multiple lower mounting seats 102, each detachably connected to the screening box 101 and located inside the screening box 101. The fine screen 103 is fixedly connected to the lower mounting seats 102 and located in the middle of the lower mounting seats 102. There are multiple support bars 104, each slidably connected to the screening box 101 and located on top of the lower mounting seats 102. There are multiple upper mounting seats 105, each detachably connected to the support bars 104. The coarse screen 106 is fixedly connected to the upper mounting base 105 and located in the middle of the upper mounting base 105. The scraping assembly is connected to the fine screen 103. The sealing assembly and the lifting assembly are respectively connected to the screening box 101. The screening box 101 is used to screen concrete aggregates. The lower mounting base 102 provides support for the fine screen 103, which is used for fine filtration of aggregates. The support bar 104 provides a limiting function for the lower mounting base 102 and the upper mounting base 105. The upper mounting base 105 provides support for the coarse screen 106, which is used for coarse filtration of concrete aggregates. In use, the screening box 101 is installed on top of the corresponding mixing device, and the aggregates are fed into the screening box 101. An external power device drives the rotating shaft 110 to rotate, simultaneously rotating the upper scraper 112 and the lower scraper 113. The concrete aggregates are filtered through the coarse screen 106 and the fine screen 103. The rotating upper scraper 112 cleans the surface of the coarse screen 106 and simultaneously performs screening. The inner wall of the screening box 101 is cleaned by rotating the lower scraper 113 to clean the surface of the fine screen 103 and the bottom of the coarse screen 106, and at the same time clean the inner wall of the screening box 101 to prevent concrete aggregate from sticking to the surface of the fine screen 103 and the coarse screen 106. The lifting component facilitates the conveying of the aggregate before filtration by the fine screen 103 to the surface of the coarse screen 106 for further filtration, thereby improving the fineness of filtration. When it is necessary to discharge the filtered impurities, the sealing seat 114 is opened to facilitate the cleaning of the impurities in the screening box 101.

[0024] The cover plate 107 is detachably connected to the screening box 101 and is located on top of the screening box 101. There are multiple limiting strips 108, which are fixedly connected to the cover plate 107 and are located on top of the upper mounting base 105. The cover plate 107 provides support for the limiting strips 108, and the limiting strips 108 provide limiting for the upper mounting base 105, the support strip 104, and the lower mounting base 102.

[0025] The limiting seat 109 is detachably connected to the fine screen 103 and is located at the bottom of the fine screen 103. The rotating shaft 110 is rotatably connected to the limiting seat 109 and passes through the fine screen 103, the coarse screen 106, and the cover plate 107. There are multiple rotating seats 111, which are respectively fixedly connected to the rotating shaft 110 and located on the outside of the rotating shaft 110. The limiting seat 109 provides support and limiting function for the rotating shaft 110. The rotating shaft 110 provides transmission function for the upper scraper 112 and the lower scraper 113. The rotating seats 111 are used to provide transmission function for the upper scraper 112 and the lower scraper 113.

[0026] The upper scraper 112 consists of two blades, each fixedly connected to the rotating seat 111 and located on the outer side of the rotating seat 111. The lower scraper 113 consists of two blades, each fixedly connected to the rotating seat 111 and located on the outer side of the rotating seat 111. The rotating upper scraper 112 cleans the surface of the coarse screen 106 and the inner wall of the screening box 101. The rotating lower scraper 113 cleans the surface of the fine screen 103 and the bottom of the coarse screen 106, and the inner wall of the screening box 101.

[0027] Secondly, there are two sealing seats 114, which are detachably connected to the screening box 101 and located on the outside of the screening box 101. There are also two plugs 115, which are fixedly connected to the sealing seats 114 and located on the inside of the sealing seats 114. There are also multiple sealing bolts 116, which are threadedly connected to the screening box 101 and pass through the sealing seats 114. The sealing seats 114 provide support for the plugs 115, and the plugs 115 provide a seal for the discharge port on the side of the screening box 101. The sealing bolts 116 facilitate fixing the sealing seats 114 to the outside of the screening box 101.

[0028] Furthermore, the lifting seat 117 is fixedly connected to the screening box 101 and located outside the screening box 101. The lifting shaft 118 is rotatably connected to the lifting seat 117 and passes through the lifting seat 117. The spiral lifting cylinder 119 is fixedly connected to the lifting shaft 118 and located inside the lifting seat 117. The lifting seat 117 is used to provide support for the lifting assembly, and the lifting shaft 118 is used to provide transmission for the spiral lifting cylinder 119. The spiral lifting cylinder 119 is used to transport the filtered aggregate.

[0029] Using the high-strength durable concrete preparation device of this embodiment, during use, the screening box 101 is installed on top of the corresponding mixing device, and the aggregate is fed into the screening box 101. At this time, the rotating shaft 110 is driven to rotate by an external power device, which in turn drives the upper scraper 112 and the lower scraper 113 to rotate. The concrete aggregate is filtered through the coarse screen 106 and the fine screen 103. The rotating upper scraper 112 cleans the surface of the coarse screen 106 and the inner wall of the screening box 101. The rotating lower scraper 113 cleans the surface of the fine screen 103 and the inner wall of the screening box 101. The bottom of the coarse screen 106 is cleaned, and the inner wall of the screening box 101 is also cleaned to prevent concrete aggregate from sticking to the surfaces of the fine screen 103 and the coarse screen 106. The lifting component facilitates the transport of the aggregate before filtration by the fine screen 103 to the surface of the coarse screen 106 for further filtration, thus improving the fineness of the filtration. When it is necessary to discharge the filtered impurities, the sealing seat 114 is opened to facilitate the cleaning of the impurities in the screening box 101. This solves the problem that the preparation device for composite high-strength concrete requires frequent replacement of the coarse and fine screens, which leads to a decrease in the efficiency of concrete preparation.

[0030] The second embodiment of this application is as follows: The method for preparing high-strength durable concrete in this embodiment includes: I. Pretreatment Stage S1: Component Assembly and Inspection Multiple lower mounting seats are evenly disassembled and connected inside the screening box, and the fine screen is fixed in the middle of the lower mounting seats; the support bar is slidably connected inside the screening box and placed on top of the lower mounting seats, the upper mounting seat is disassembled and connected to the top of the support bar, and the coarse screen is fixed in the middle of the upper mounting seat, ensuring that the coarse screen (coarse filtration) and the fine screen (fine filtration) are distributed parallel to each other vertically.

[0031] S2: Limit and sealing settings The cover plate is detached and connected to the top of the screening box, so that the multiple limiting strips at the bottom of the cover plate are respectively attached to the top of the upper mounting seat, thereby achieving longitudinal limiting of the upper mounting seat, support strip and lower mounting seat; the two sealing seats are fixed to the outside of the screening box by multiple sealing bolts, and the sealing seat is tightly attached to the side discharge port of the screening box to complete the sealing.

[0032] S3: Transmission component debugging The limiting seat is detached and connected to the bottom of the fine screen. The rotating shaft passes through the fine screen, the coarse screen and the cover plate and is rotatably connected to the limiting seat, ensuring that the multiple rotating seats on the outside of the rotating shaft correspond to the positions of the coarse screen and the fine screen respectively. The two upper scrapers and the two lower scrapers are fixed to the outside of the rotating seats respectively. When the rotating shaft is adjusted to rotate, the upper scrapers are in contact with the surface of the coarse screen and the inner wall of the screening box, and the lower scrapers are in contact with the surface of the fine screen, the bottom of the coarse screen and the inner wall of the screening box.

[0033] S4: Enhance component startup Check the fixed connection status between the lifting seat and the screening box to ensure that the lifting shaft is rotatably connected to the lifting seat, the spiral lifting cylinder is located inside the lifting seat and fixed to the lifting shaft, and start the external power unit to pre-test the rotation coordination between the rotating shaft and the lifting shaft.

[0034] II. Aggregate Screening and Processing Stages (S5-S8) S5: Raw Material Input Open the cover and evenly put the concrete aggregate (stones, sand, etc.) into the screening box. The aggregate first falls onto the surface of the coarse screen. Close the cover and reinforce the stability of the component with the limit strip. S6: Staged filtration and anti-adhesion cleaning The external power unit is activated to drive the rotating shaft to rotate, which in turn drives the upper and lower scraper blades to rotate synchronously via the rotating seat. When the upper scraper rotates, it flattens the aggregate and cleans the aggregate adhering to the surface of the coarse screen and the deposits on the inner wall of the screening box to ensure that the coarse filtration channel is unobstructed. When the lower scraper rotates, it cleans the surface of the fine screen, the bottom of the coarse screen to remove aggregate blockage, and the residue on the inner wall of the screening box, preventing the fine screen aperture from becoming clogged and helping the aggregate to pass through the fine screen quickly.

[0035] S7: Secondary Enhanced Filtration When the lifting assembly is activated, the lifting shaft drives the spiral lifting cylinder to rotate, conveying the aggregate that has not been fully filtered above the fine screen to the surface of the coarse screen, thereby achieving secondary coarse filtration, improving the uniformity of aggregate particle size distribution, and enhancing the degree of filtration refinement.

[0036] S8: Cleaning up miscellaneous materials During the screening process, the impurities (large particle size impurities and agglomerated materials) that do not pass through the coarse and fine screens are deposited at the bottom of the screening box. The sealing bolts are loosened periodically, the sealing seat is removed, and the impurities are cleaned through the discharge port. After cleaning, the box is resealed without interrupting the screening process.

[0037] III. Mixing and Finished Product Molding Stage (S9-S11) S9: Post-screening aggregate conveying The qualified aggregates after secondary filtration are directly conveyed to the matching mixing device below through the discharge port at the bottom of the screening box.

[0038] S10: Raw material proportioning and mixing Add cement, water, admixtures (such as water-reducing agents and air-entraining agents) and mineral admixtures (such as fly ash and mineral powder) to the mixing device according to the preset ratio, and mix them together with the sieved aggregate. The mixing time is controlled at 2-3 minutes to ensure that the mixture is uniform and fine.

[0039] S11: Pouring and Curing The mixed concrete slurry is poured into the mold, vibrated to compact it, and then cured according to standard (temperature 20±2℃, humidity ≥95%) for no less than 28 days to form a high-strength and durable concrete product.

[0040] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A high-strength durable concrete preparation device comprising a screening box, characterized in that, It also includes a screening assembly, a scraping assembly, a sealing assembly and a lifting assembly; The screening assembly comprises a lower mounting seat, a fine screen, a support bar, an upper mounting seat and a coarse screen, the number of the lower mounting seat is multiple, the multiple lower mounting seats are respectively detachably connected with the screening box and are respectively located inside the screening box, the fine screen is fixedly connected with the lower mounting seat and is located in the middle of the lower mounting seat, the number of the support bar is multiple, the multiple support bars are respectively slidably connected with the screening box and are respectively located on the top of the lower mounting seat, the number of the upper mounting seat is multiple, the multiple upper mounting seats are respectively detachably connected with the support bar and are respectively located on the top of the support bar, the coarse screen is fixedly connected with the upper mounting seat and is located in the middle of the upper mounting seat, the scraping assembly is connected with the fine screen, and the sealing assembly and the lifting assembly are respectively connected with the screening box.

2. The high-strength durable concrete preparation device according to claim 1, characterized in that, The screening assembly further comprises a cover plate and a limiting bar, the cover plate is detachably connected with the screening box and is located on the top of the screening box, and the number of the limiting bar is multiple, the multiple limiting bars are respectively fixedly connected with the cover plate and are respectively located on the top of the upper mounting seat.

3. The high-strength durable concrete preparation device according to claim 2, characterized in that, The scraping assembly comprises a limiting seat, a rotating shaft and a rotating seat, the limiting seat is detachably connected with the fine screen and is located on the bottom of the fine screen, the rotating shaft is rotatably connected with the limiting seat and penetrates through the fine screen, the coarse screen and the cover plate, and the number of the rotating seat is multiple, the multiple rotating seats are respectively fixedly connected with the rotating shaft and are respectively located on the outer side of the rotating shaft.

4. The high-strength durable concrete preparation device according to claim 3, characterized in that, The scraping assembly further comprises an upper scraping bar and a lower scraping bar, the number of the upper scraping bar is two, the two upper scraping bars are respectively fixedly connected with the rotating seat and are respectively located on the outer side of the rotating seat, and the number of the lower scraping bar is two, the two lower scraping bars are respectively fixedly connected with the rotating seat and are respectively located on the outer side of the rotating seat.

5. The high-strength durable concrete preparation device according to claim 4, characterized in that, The sealing assembly comprises a sealing seat, a blocking seat and a sealing bolt, the number of the sealing seat is two, the two sealing seats are respectively detachably connected with the screening box and are respectively located on the outer side of the screening box, the number of the blocking seat is two, the two blocking seats are respectively fixedly connected with the sealing seat and are respectively located on the inner side of the sealing seat, and the number of the sealing bolt is multiple, the multiple sealing bolts are respectively threadedly connected with the screening box and respectively penetrate through the sealing seat.

6. The high-strength durable concrete preparation device according to claim 5, characterized in that, The lifting assembly comprises a lifting seat, a lifting shaft and a spiral lifting cylinder, the lifting seat is fixedly connected with the screening box and located outside the screening box, the lifting shaft is rotationally connected with the lifting seat and penetrates through the lifting seat, and the spiral lifting cylinder is fixedly connected with the lifting shaft and located inside the lifting seat.

7. A high-strength durable concrete preparation method applied to the high-strength durable concrete preparation device according to claim 1.

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