High-chemical-erosion-resistance recycled concrete preparation equipment

Abstract

The invention relates to high-chemical-erosion-resistance recycled concrete preparation equipment, and relates to the technical field of recycled concrete preparation equipment.The high-chemical-erosion-resistance recycled concrete preparation equipment comprises a stirring barrel, a screening box, a crushing box, a cleaning box and a drying box, the lower ends of the screening box and the crushing box communicate with the cleaning box, and a screen is arranged in the screening box and obliquely arranged; the side, close to the lowest end of the screen, of the screening box communicates with the crushing box, a plurality of first cleaning pipes and a water filter screen are arranged in the cleaning box, the water filter screen is obliquely arranged, the first cleaning pipes are arranged above the water filter screen in the oblique direction of the water filter screen, the first cleaning pipes are located below the crushing box, and a conveying belt is arranged on the outer side of the cleaning box and penetrates through the drying box. The end, away from the cleaning box, of the conveying belt is located above the feeding hopper, a plurality of metering hoppers are arranged on the upper end face of the stirring barrel, the lower ends of the metering hoppers communicate with the stirring barrel, weighing sensors are arranged below the metering hoppers, and an electromagnetic valve is arranged on the feeding pipe. The method has the effect of improving the chemical erosion resistance of the recycled concrete.

Description

Technical Field

[0001] The present application relates to the technical field of recycled concrete preparation equipment, and in particular to a highly chemically resistant recycled concrete preparation equipment. Background Art

[0002] As an environmentally friendly building material, recycled concrete has been widely used and developed in recent years. With the continuous increase of construction waste, how to efficiently utilize these wastes has become an important research topic. Recycled concrete can not only reduce the accumulation of construction waste, but also save natural resources, with significant environmental and socio-economic benefits. Especially in modern buildings, the requirements for resistance to chemical erosion are getting higher and higher, which has prompted researchers to continuously explore new technologies and equipment to improve the chemical erosion resistance of recycled concrete.

[0003] In order to meet these challenges, existing technologies usually use a variety of methods to process recycled aggregates. For example, commonly used aggregate pretreatment methods include screening, crushing, cleaning and drying. Screening is mainly used to remove large particles and impurities in aggregates to ensure the uniformity of aggregate size; crushing is used to refine large aggregate particles to meet the requirements of subsequent processes; cleaning is to remove pollutants on the surface of aggregates through water flow or other media to improve the cleanliness of aggregates; drying is to remove moisture from aggregates after cleaning to prevent excessive moisture from affecting the performance of concrete. Although these methods can improve the quality of recycled aggregates to a certain extent, there are still some shortcomings in practical applications.

[0004] Although the existing pretreatment methods can improve the quality of recycled aggregates to a certain extent, there are still some problems. First, the uniformity of aggregate size is difficult to ensure, and screening leakage is likely to occur during the screening process, resulting in large aggregate particles being mixed into subsequent processes, affecting the internal structure of the concrete. Secondly, the cleaning effect of the aggregate is not good. The existing cleaning devices often cannot fully cover the surface of the aggregate, resulting in the failure to completely remove pollutants in some areas, affecting the performance of the concrete. The existence of these problems limits the widespread application of recycled concrete, especially its lack of ability to resist chemical erosion. An efficient pretreatment equipment is urgently needed to solve these problems. Summary of the invention

[0005] In order to improve the chemical corrosion resistance of recycled concrete, the present application provides a highly chemical corrosion resistant recycled concrete preparation device.

[0006] The present application provides a highly chemical erosion resistant recycled concrete preparation device, which adopts the following technical solution: A highly chemical erosion resistant recycled concrete preparation device comprises an aggregate pretreatment device and a mixing drum, wherein a feed hopper is arranged at the upper end of the mixing drum, the aggregate pretreatment device comprises a screening box, a crushing box, a cleaning box and a drying box, the lower ends of the screening box and the crushing box are both connected with the cleaning box, a screen is arranged in the screening box, the screen is inclined, and the side of the screening box close to the lowest end of the screen is connected with the crushing box, a plurality of first cleaning pipes and a water filter are arranged in the cleaning box, the water filter is inclined, and a plurality of first cleaning pipes are arranged above the water filter along the inclined direction of the water filter, the first cleaning pipe is located below the crushing box, a conveyor belt is arranged outside the cleaning box, the conveyor belt passes through the drying box, and the end of the conveyor belt away from the cleaning box is located above the feed hopper, a plurality of metering hoppers are arranged on the upper end surface of the mixing drum, a feed pipe is arranged at the lower end of the metering hopper, the feed pipe is connected with the mixing drum, a weighing sensor is arranged below the metering hopper, and a solenoid valve is arranged on the feed pipe.

[0007] By adopting the above technical solution, the inclined setting of the screen in the screening box can effectively remove the large particles of aggregate in the aggregate, ensure that the size of the aggregate entering the subsequent process is uniform, thereby reducing the internal structural defects of the concrete caused by uneven aggregate and improving the overall density of the concrete. The crushing box refines the particle size of the large particles of aggregate screened out from the screening box so that they can enter the subsequent process and reduce the waste of aggregate. The first cleaning pipe and the water filter net design in the cleaning box enable the aggregate to fully contact the water flow during the cleaning process, effectively remove the surface attachments, and improve the cleanliness of the aggregate. The hot air blower and heating wire in the drying box can quickly dry the cleaned aggregate to avoid residual moisture affecting the performance of the concrete. The weighing sensor and solenoid valve in the mixing drum accurately control the amount of various materials added to ensure the accurate concrete ratio and improve the uniformity and stability of the concrete. These measures work together to significantly improve the chemical corrosion resistance of recycled concrete.

[0008] Optionally, a plurality of first nozzles are fixedly provided on the lower side of the first cleaning pipe, a protective shell is provided between the first cleaning pipe and the crushing box, the protective shell is fixedly connected to the cleaning box, the protective shell is composed of two long strips, the connection between the two long strips is located above the unconnected part of the two long strips, and the first cleaning pipe is located within the angle between the two long strips.

[0009] By adopting the above technical solution, the setting of the first nozzle makes the water flow more concentrated and powerful, improves the cleaning efficiency, and removes impurities and dirt on the surface of the aggregate. The protective shell is composed of two long strips, and the connection method of the two long strips makes its structure more stable and prolongs its service life. The first cleaning pipe is located in the angle between the two long strips, which further enhances the protection effect of the first cleaning pipe, reduces the impact of the aggregate on the cleaning pipe, and reduces the risk of damage to the cleaning pipe. It can effectively improve the cleaning effect of the aggregate and prevent the aggregate from splashing or scattering during the cleaning process, while ensuring the safety and stability of the first cleaning pipe and reducing maintenance costs. The connection between the two long strips is located above the unconnected part of the two long strips, so that when the aggregate falling from the screening box and the crushing box falls on the protective shell, it slides down along the side walls of the two long strips and falls onto the screen.

[0010] Optionally, a discharge port is provided on the side wall of the cleaning box near the lowest end of the water filter net, and a cleaning door is provided at the discharge port. The water filter net is located between the upper end surface and the lower end surface of the discharge port. The upper end of the cleaning door is hinged to the cleaning box, and an opening and closing cylinder is hinged to the outer wall of the cleaning box. The telescopic end of the opening and closing cylinder is hinged to the cleaning door. A plurality of baffles are provided along the rotation direction of the conveyor belt. The conveyor belt includes a low flat portion, an inclined portion and a high flat portion. The upper end surface of the baffle on the low flat portion is located below the cleaning door, and the high flat portion is located above the feed hopper.

[0011] By adopting the above technical solution, the materials in the cleaning box can be discharged smoothly through the discharge port, avoiding the problem of affecting the cleaning efficiency due to blockage. The design of the cleaning door makes the operation more convenient, easy to clean and maintain. At the same time, the use of the opening and closing cylinder improves the degree of automation and reduces the need for manual intervention. The baffle set on the conveyor belt can effectively prevent the material from falling during the conveying process, ensuring the stability of material transmission. The low flat part, inclined part and high flat part segment design enable the material to be smoothly conveyed from the cleaning box to the feed hopper, improving the working efficiency of the entire equipment.

[0012] Optionally, a water pump is provided at the bottom of the cleaning box, the water pump is connected to a plurality of second cleaning pipes arranged in an inclined direction of the water filter net, the plurality of second cleaning pipes are located below the water filter net, a plurality of second nozzles are fixed on the upper side of the second cleaning pipes, and a water purifier is provided at the water inlet of the water pump.

[0013] By adopting the above technical solution, the water pump is arranged at the bottom of the cleaning box, which can make full use of the waste water after cleaning and reduce the waste of water resources. The second cleaning pipe is arranged along the inclination direction of the water filter net to ensure that the water flow is evenly distributed under the water filter net, further improving the cleaning effect. The second nozzle is fixed on the upper side of the second cleaning pipe, which can form multiple injection points under the water filter net, enhance the cleaning force, improve the cleaning efficiency and cleanliness. The water purifier is installed at the water inlet of the water pump, which can effectively filter impurities, ensure water quality, extend the service life of the equipment, and improve the quality of recycled concrete.

[0014] Optionally, a hot air blower is provided on the top of the drying box, and a heating wire is provided on the inner wall of the dryer in the opposite direction of the conveyor belt rotation.

[0015] By adopting the above technical solution, the hot air blower is installed at the top of the drying box, which can blow hot air evenly from above during the movement of the conveyor belt to ensure the rapid evaporation of moisture on the surface of the aggregate. The heating wire is installed on the inner wall of the drying box in the opposite direction of the conveyor belt rotation, which can further increase the temperature in the drying box and accelerate the evaporation process of moisture inside the aggregate, thereby improving the drying speed and thoroughness, and ensuring that the aggregate reaches the required degree of dryness. The two work together to effectively improve the drying efficiency and quality of recycled concrete aggregates.

[0016] Optionally, a pushing cylinder is fixedly provided on the outer wall of the cleaning box on the side away from the cleaning door, and a pushing plate is fixedly connected to the telescopic end of the pushing cylinder, the pushing plate is located in the cleaning box, the lower end face of the pushing plate abuts against the upper end face of the water filter net, the side wall of the pushing plate parallel to the telescopic direction of the pushing cylinder abuts against the side wall of the cleaning box, and the axial direction of the pushing cylinder is parallel to the inclination direction of the upper end face of the water filter net.

[0017] By adopting the above technical solution, the arrangement of the push cylinder and the push plate can effectively push the material on the water filter net, prevent material blockage, and improve the cleaning efficiency and cleanliness. The close contact between the push plate and the upper end surface of the water filter net ensures the smooth movement of the material and avoids residue. The abutment design between the push plate and the side wall of the cleaning box further ensures the complete pushing of the material and improves the reliability and stability of the entire cleaning process. The axial direction of the push cylinder is parallel to the inclination direction of the upper end surface of the water filter net, which makes the pushing action smoother, reduces mechanical wear, and extends the service life of the equipment.

[0018] Optionally, a stirring motor is fixedly arranged on the upper end surface of the mixing drum, a plurality of stirring blades are evenly distributed along the axis of the mixing drum, a rotating shaft of the stirring motor is fixedly connected to the stirring blades, and a heating element is arranged on the inner wall of the mixing drum. By adopting the above technical solution, efficient mixing and heating of recycled concrete is achieved, ensuring the uniformity and stability of concrete materials and improving the concrete's resistance to chemical erosion. The setting of the stirring motor makes the mixing process more uniform, avoiding the problem of material agglomeration or uneven distribution during the mixing process. Several stirring blades evenly distributed along the axis of the mixing drum further enhance the mixing effect and ensure the full mixing of all ingredients. The heating element on the inner wall of the mixing drum can effectively increase the temperature of the concrete, speed up the reaction speed, and ensure the temperature consistency of the concrete during the mixing process, thereby improving the quality of the final product. Optionally, a discharge pipe is provided at the lower end of the mixing drum, a feeding device for transporting the molding mold is provided below the discharge pipe, and a valve is provided on the discharge pipe.

[0019] By adopting the above technical solution, the setting of the discharge pipe makes it easy to discharge the mixed concrete, which improves the work efficiency. The introduction of the feeding device of the transport molding mold realizes the automatic transmission and molding of concrete, reduces manual operation, and improves production efficiency and safety. The setting of the valve facilitates the control of the outflow speed and amount of concrete, ensuring the accuracy and stability of production.

[0020] Optionally, a stirrer is provided in the measuring hopper.

[0021] By adopting the above technical solution, the agitator can stir the additives, prevent the additives from agglomerating, and ensure uniform mixing of the additives, thereby further improving the quality and performance of the concrete and making it perform better in a high chemical corrosion environment.

[0022] Optionally, it also includes an intelligent control system and a remote monitoring system, wherein the intelligent control system is used to realize automated production of the equipment, and the remote monitoring system is used to realize remote monitoring and control of the equipment.

[0023] By adopting the above technical solutions, the intelligent control system realizes the automated production of equipment, improves production efficiency, reduces manual intervention, and reduces the difficulty of operation and labor intensity. The remote monitoring system can monitor the operating status of equipment in real time, detect and solve faults in time, ensure the continuity and stability of production, and facilitate remote management and maintenance.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The inclined setting of the screen in the screening box can effectively remove large particles of aggregate from the aggregate, ensuring that the size of the aggregate entering the subsequent process is uniform, thereby reducing the internal structural defects of the concrete caused by uneven aggregates and improving the overall density of the concrete; the crushing box refines the particle size of the large particles of aggregate screened out from the screening box so that they can enter the subsequent process and reduce the waste of aggregates; the first cleaning pipe and water filter design in the cleaning box allow the aggregate to fully contact the water flow during the cleaning process, effectively removing surface attachments and improving the cleanliness of the aggregate; the hot air blower and heating wire in the drying box can quickly dry the cleaned aggregate to avoid residual moisture affecting the performance of the concrete. The weighing sensor and solenoid valve in the mixing drum accurately control the amount of various materials added to ensure the accurate proportion of concrete and improve the uniformity and stability of concrete; these measures work together to significantly improve the chemical corrosion resistance of recycled concrete; 2. The setting of the first nozzle makes the water flow more concentrated and powerful, improves the cleaning efficiency, and removes impurities and dirt on the surface of the aggregate; the protective shell is composed of two long strips, and the connection method of the two long strips makes its structure more stable and prolongs its service life; the first cleaning pipe is located in the angle between the two long strips, which further enhances the protection effect of the first cleaning pipe, reduces the impact of aggregates on the cleaning pipe, and reduces the risk of damage to the cleaning pipe; it can effectively improve the cleaning effect of aggregates, prevent aggregates from splashing or scattering during the cleaning process, and at the same time ensure the safety and stability of the first cleaning pipe, reducing maintenance costs; the connection of the two long strips is located above the unconnected part of the two long strips, so that when the aggregates falling from the screening box and the crushing box fall on the protective shell, they slide down along the side walls of the two long strips and fall onto the screen; 3. The materials in the cleaning box can be discharged smoothly through the discharge port, avoiding the problem of affecting the cleaning efficiency due to blockage; the design of the cleaning door makes the operation more convenient, easy to clean and maintain. At the same time, the use of the opening and closing cylinder improves the degree of automation and reduces the need for manual intervention. The baffle set on the conveyor belt can effectively prevent the material from falling during the conveying process, ensuring the stability of material transmission; the low flat part, inclined part and high flat part segment design enable the material to be smoothly conveyed from the cleaning box to the feed hopper, improving the working efficiency of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The schematic diagram of the overall structure of a highly chemical-resistant recycled concrete preparation device.

[0026] Figure 2 It is a schematic cross-sectional view of the screening box, crushing box and cleaning box.

[0027] Figure 3 It is a vertical cross-sectional diagram of the screening box, crushing box and cleaning box.

[0028] Figure 4 It is a cross-sectional view of the drying oven.

[0029] Figure 5 It is a schematic diagram of the structure of a mixing barrel and a measuring bucket.

[0030] Figure 6 It is a schematic cross-sectional view of a mixing barrel and a measuring hopper.

[0031] Description of the reference numerals: 1. Aggregate pretreatment device; 11. Screening box; 111. Screen; 12. Crushing box; 13. Cleaning box; 131. First cleaning pipe; 1311. First nozzle; 1312. Protective shell; 132. Water filter; 133. Cleaning door; 134. Opening and closing cylinder; 135. Water pump; 1351. Water purifier; 136. Second cleaning pipe; 1361. Second nozzle; 137. Pushing cylinder; 138. Pushing Plate; 14, drying box; 141, hot air blower; 142, heating wire; 2, mixing drum; 21, feed hopper; 22, stirring motor; 23, stirring blade; 24, heating element; 25, discharge pipe; 26, valve; 3, conveyor belt; 31, baffle; 32, low flat part; 33, inclined part; 34, high flat part; 4, measuring bucket; 41, feed pipe; 42, weighing sensor; 43, solenoid valve; 44, agitator; 5, feeding device. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a highly chemical corrosion resistant recycled concrete preparation device.

[0034] Reference Figure 1 , a highly chemical-resistant recycled concrete preparation device, comprising an aggregate pretreatment device 1 and a mixing drum 2.

[0035] Reference Figure 1 and Figure 2 The aggregate pretreatment device 1 includes a screening box 11, a crushing box 12, a cleaning box 13 and a drying box 14. The lower ends of the screening box 11 and the crushing box 12 are both connected to the cleaning box 13. A screen 111 is provided in the screening box 11. The screen 111 is tilted to ensure that the aggregate slides smoothly under the action of gravity. The side of the screening box 11 close to the lowest end of the screen 111 is connected to the crushing box 12. Specifically, the screen 111 can be made of stainless steel, and the mesh size of the screen 111 can be adjusted as needed, such as 5mm, 10mm, etc., to adapt to aggregates of different particle sizes. Vibration motors can be set on both sides of the screen 111, and the frequency and amplitude of the vibration motor can be adjusted by a controller to improve the screening efficiency. The lowest end of the screen 111 is connected to the crushing box 12 to ensure that the aggregate after screening can enter the crushing box 12 smoothly.

[0036] Reference Figure 2 The crushing box 12 is provided with a crushing roller, which can be cylindrical or conical, and its diameter and length are determined according to the processing amount of aggregate. The speed and rotation direction of the crushing roller can be adjusted by a frequency converter to adapt to aggregates of different hardness. The outlet of the crushing box 12 is located below the crushing roller and is connected to the cleaning box 13 to ensure that the crushed aggregate can fall into the cleaning box 13 evenly.

[0037] Reference Figure 2 , a plurality of first cleaning pipes 131 and a water filter 132 are arranged in the cleaning box 13. The water filter 132 is tilted. The tilted filter allows the sewage to contact the filter more fully when passing through, thereby improving the filtering efficiency and preventing the filter from being blocked. A plurality of first cleaning pipes 131 are arranged above the water filter 132 along the tilt direction of the water filter 132. The first cleaning pipe 131 is located below the crushing box 12. A plurality of first nozzles 1311 are arranged on the first cleaning pipe 131. The first nozzle 1311 can be an atomizing nozzle or a fan-shaped nozzle to improve the cleaning effect. The angle of the first nozzle 1311 can be adjusted according to actual needs to ensure that the water flow evenly covers the water filter 132. A protective shell 1312 is provided between the first cleaning pipe 131 and the crushing box 12. The protective shell 1312 can be made of stainless steel and has good corrosion resistance. The protective shell 1312 is composed of two long strips, the connection between the two long strips is located above the unconnected part of the two long strips, and the first cleaning pipe 131 is located in the angle between the two long strips to protect the first cleaning pipe 131 from the impact of aggregates.

[0038] Reference Figure 2 A water pump 135 is provided at the bottom of the cleaning box 13. The water pump 135 is connected to a plurality of second cleaning pipes 136 arranged in an oblique direction with the water filter nets 132. The second cleaning pipes 136 are located below the water filter nets 132. A plurality of second nozzles 1361 are fixedly provided on the upper side of the second cleaning pipes 136. A water purifier 1351 is provided at the water inlet of the water pump 135. The second nozzles 1361 can be straight nozzles or shower nozzles to ensure that the water flow can be evenly distributed below the water filter nets 132. The water purifier 1351 can be an activated carbon filter or a sand filter to remove impurities in the water.

[0039] Reference Figure 2 and Figure 3 A discharge port is provided on the side wall of the cleaning box 13 near the lowest end of the water filter net 132. A cleaning door 133 is provided at the discharge port of the cleaning box 13. The water filter net 132 is located between the upper end surface and the lower end surface of the discharge port, ensuring that the aggregate can be discharged from the discharge port, and the water on the water filter net 132 will not flow out from the gap between the cleaning door 133 and the discharge port. The upper end of the cleaning door 133 is hinged to the cleaning box 13 and can be opened and closed flexibly. An opening and closing cylinder 134 is hinged to the outer wall of the cleaning box 13. The telescopic end of the opening and closing cylinder 134 is hinged to the cleaning door 133. The opening and closing cylinder 134 can be a hydraulic cylinder with high thrust and stability, ensuring smooth opening and closing of the cleaning door 133.

[0040] Reference Figure 3The outer wall of the cleaning box 13 away from the cleaning door 133 is fixed with a push cylinder 137, and the telescopic end of the push cylinder 137 is fixedly connected with a push plate 138. The push plate 138 is located in the cleaning box 13, and the lower end surface of the push plate 138 abuts against the upper end surface of the water filter net 132. The side wall of the push plate 138 parallel to the telescopic direction of the push cylinder 137 abuts against the side wall of the cleaning box 13, and the axial direction of the push cylinder 137 is parallel to the inclination direction of the upper end surface of the water filter net 132. The push cylinder 137 can be a hydraulic cylinder or an electric cylinder, and its thrust and stroke can be adjusted according to the processing amount of aggregate and the size of the cleaning box 13. The push plate 138 can be made of stainless steel or plastic, and its thickness and width are determined according to the size of the aggregate and the size of the cleaning box 13. The lower end surface of the push plate 138 is in close contact with the upper end surface of the water filter net 132 to ensure that the aggregate can be pushed smoothly and avoid residue. The side wall of the push plate 138 abuts against the side wall of the cleaning box 13 to ensure that the aggregate can be completely pushed, thereby improving the cleaning efficiency and cleanliness. The arrangement of the push cylinder 137 and the push plate 138 can effectively push the aggregate on the water filter net 132 during the cleaning process, prevent aggregate blockage, and improve the cleaning efficiency and cleanliness. The close contact between the push plate 138 and the upper end surface of the water filter net 132 ensures the smooth movement of the aggregate and avoids residue. The abutment design of the push plate 138 and the side wall of the cleaning box 13 further ensures the complete pushing of the material and improves the reliability and stability of the entire cleaning process. The axial direction of the push cylinder 137 is parallel to the inclination direction of the upper end surface of the water filter net 132, which makes the pushing action smoother, reduces mechanical wear, and extends the service life of the equipment.

[0041] Reference Figure 1 A conveyor belt 3 is provided on the outside of the cleaning box 13 near the cleaning door 133. The conveyor belt 3 is provided with a plurality of baffles 31 along the rotation direction. The conveyor belt 3 includes a low flat portion 32, an inclined portion 33 and a high flat portion 34. The upper end surface of the baffle 31 on the low flat portion 32 is located below the cleaning door 133, and the high flat portion 34 is located above the feed hopper 21. The conveyor belt 3 can be made of stainless steel or plastic, and its width and length are determined according to the processing amount of the aggregate. The height and spacing of the baffles 31 can be adjusted according to the size of the aggregate to prevent the aggregate from falling during the conveying process.

[0042] Reference Figure 1 and Figure 4The low flat part 32 of the conveyor belt 3 passes through the drying box 14. A hot air blower 141 is provided at the top of the drying box 14. A heating wire 142 is provided on the inner wall of the dryer in the opposite direction of the conveyor belt 3. The hot air blower 141 can be electrically heated or gas heated, and its power and air volume can be adjusted according to the humidity of the aggregate. The heating wire 142 can be made of nickel-chromium alloy or iron-chromium-aluminum, and its density and layout can be determined according to the size and shape of the drying box 14. The inlet and outlet of the drying box 14 are provided with temperature sensors, and the signal of the temperature sensor can be fed back to the hot air blower 141 and the heating wire 142 through the controller to ensure that the temperature in the drying box 14 is constant.

[0043] Reference Figure 1 and Figure 5 , a feed hopper 21 and several metering hoppers 4 are provided at the upper end of the mixing drum 2, the high flat portion 34 of the conveyor belt 3 is located at the end of the conveyor belt 3 away from the cleaning box 13 and above the feed hopper 21, each metering hopper 4 corresponds to different types of additives, and the volume of the metering hopper 4 can be customized according to production requirements, and is generally made of stainless steel or carbon steel with good anti-corrosion performance. A weighing sensor 42 is provided below the metering hopper 4, which can monitor the weight of the additive in real time to ensure accurate control of the amount of additive added. The weighing sensor 42 can be a resistance strain gauge type or a piezoelectric ceramic type, and its accuracy and response time can be adjusted as needed. A feed pipe 41 is provided at the lower end of the metering hopper 4, and the feed pipe 41 is connected to the mixing drum 2, and a solenoid valve 43 is provided on the feed pipe 41. The solenoid valve 43 can be an electromagnetic proportional valve or an electromagnetic stop valve, and its switching time and flow rate can be adjusted according to the concrete ratio.

[0044] Reference Figure 6 In addition, a stirrer 44 can be installed on the metering bucket 4. The stirrer 44 is located inside the metering bucket 4 and is used to stir the additive to prevent the additive from agglomerating. The stirrer 44 can be a rotary blade type with strong stirring ability. In addition, the stirrer 44 can be driven by a motor, and the motor can be regulated by a control system to ensure uniform mixing of the additive, further improving the quality and performance of the concrete, making it perform better in a high chemical corrosion environment.

[0045] Reference Figure 6A stirring motor 22 is fixedly provided on the upper end surface of the mixing drum 2, and a plurality of stirring blades 23 evenly distributed along the axis of the mixing drum 2 are provided in the mixing drum. The rotating shaft of the stirring motor is fixedly connected to the stirring blades 23, and a heating element 24 is provided on the inner wall of the mixing drum 2. The stirring motor 22 can be a DC motor or an AC motor, and its power and speed can be adjusted according to the size of the mixing drum 2 and the stirring requirements. The stirring blades 23 can be spiral or blade-shaped, and their diameter and number are determined according to the size of the mixing drum 2 and the stirring requirements. A wear-resistant coating can be used on the surface of the stirring blades 23 to improve its durability and stirring effect. A heating element 24 is provided on the inner wall of the mixing drum 2, and the heating element 24 can be heated by electricity or hot water, and its power and temperature can be adjusted according to the type of concrete. The heating elements 24 can be evenly distributed on the inner wall of the mixing drum 2 to ensure that the concrete maintains a suitable temperature during the entire mixing process and improves its fluidity.

[0046] Reference Figure 1 A discharge pipe 25 is provided at the bottom of the mixing drum 2, and a valve 26 is provided on the discharge pipe 25. The valve 26 can be a butterfly valve or a ball valve, and its opening and closing time and flow rate can be adjusted according to the fluidity of the concrete and the construction requirements. A feeding device 5 is provided below the discharge pipe 25, and a forming mold is placed on the feeding device 5. The recycled concrete in the mixing drum 2 is discharged into the forming mold through the discharge pipe 25, and then sent to the curing room for forming and curing.

[0047] The equipment also includes an intelligent control system and a remote monitoring system to realize the automated production and remote monitoring of the equipment. Specifically, the intelligent control system is used to realize the automated production of the equipment, and the remote monitoring system is used to realize the remote monitoring and control of the equipment. The intelligent control system can adopt PLC or industrial computer, and its control program can be programmed according to the production process and equipment parameters. The remote monitoring system can adopt wireless communication module or Internet to realize real-time data transmission and remote operation. The intelligent control system can control the start, stop and parameter adjustment of each component, such as the vibration motor of the screening box 11, the crushing roller of the crushing box 12, the water pump 135 and the nozzle of the cleaning box 13, the hot air blower 141 and the heating wire 142 of the drying box 14, the stirring motor 22 and the heating element 24 of the mixing drum 2, etc. The remote monitoring system can monitor the working status of each component in real time, find and solve the fault in time, and ensure the continuity and stability of production. By adding the intelligent control system and the remote monitoring system, the automation level and production efficiency of the equipment are further improved. The intelligent control system realizes the automated production of the equipment, reduces manual intervention, and reduces the difficulty of operation and labor intensity. The remote monitoring system can monitor the equipment's operating status in real time, detect and solve faults in a timely manner, ensure the continuity and stability of production, and facilitate remote management and maintenance. These measures further improve the recycled concrete's resistance to chemical erosion and production efficiency, ensuring the long-term stable operation of the equipment.

[0048] The steps of preparing highly chemical resistant recycled concrete by the equipment are as follows: S1, the raw materials of recycled concrete are put into the aggregate pretreatment device 1, and the aggregates meeting the required size are filtered into the cleaning box 13 through the screening box 11. The large-sized aggregates enter the crushing box 12 and are crushed to the required size and then enter the cleaning box 13. The aggregates are cleaned in the cleaning box 13 to remove impurities on the surface. The cleaned aggregates are discharged from the cleaning box 13 to the conveyor belt 3. The conveyor belt 3 sends the aggregates to the drying box 14 for drying to remove moisture on the surface of the aggregates.

[0049] S2, the processed aggregate is sent into the mixing drum 2 through the conveyor belt 3, and the amount of additives added is accurately controlled by the metering bucket 4, and the additives are added into the mixing drum 2.

[0050] S3, start the stirring motor, fully stir the raw materials of the recycled concrete through the stirring blades 23, and start the heating element 24 at the same time to prevent the material from solidifying.

[0051] S4, after the mixing is completed, the recycled concrete is transferred to the forming mold for forming and curing.

[0052] The implementation principle of a highly chemically resistant recycled concrete preparation device according to an embodiment of the present application is as follows: through the effective coordination of the screening box 11, the crushing box 12, the cleaning box 13 and the drying box 14, it is ensured that the aggregate has been fully pre-treated before entering the mixing drum 2, thereby improving the size uniformity and cleanliness of the aggregate. The multi-stage cleaning in the cleaning box 13 and the efficient drying in the drying box 14 ensure the dryness and cleanliness of the aggregate, further improving the chemical erosion resistance of the recycled concrete. The precise metering and uniform mixing in the mixing drum 2 ensure the accuracy and uniformity of the concrete ratio, and improve the overall quality and stability of the concrete. These measures work together to significantly improve the chemical erosion resistance and production efficiency of the recycled concrete.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A highly chemically resistant recycled concrete preparation device, comprising an aggregate pretreatment device (1) and a mixing drum (2), wherein a feed hopper (21) is provided at the upper end of the mixing drum (2), characterized in that: The aggregate pretreatment device (1) comprises a screening box (11), a crushing box (12), a cleaning box (13) and a drying box (14); the lower ends of the screening box (11) and the crushing box (12) are both connected to the cleaning box (13); a screen (111) is provided in the screening box (11); the screen (111) is arranged obliquely; the side of the screening box (11) close to the lowest end of the screen (111) is connected to the crushing box (12); a plurality of first cleaning pipes (131) and a water filter (132) are provided in the cleaning box (13); the water filter (132) is arranged obliquely; the plurality of first cleaning pipes (131) are arranged in the water filter. The net (132) is arranged along the inclined direction of the water filter net (132), the first cleaning pipe (131) is located below the crushing box (12), a conveyor belt (3) is provided outside the cleaning box (13), the conveyor belt (3) passes through the drying box (14), and the end of the conveyor belt (3) away from the cleaning box (13) is located above the feed hopper (21), a plurality of metering hoppers (4) are provided on the upper end surface of the mixing drum (2), a feed pipe (41) is provided at the lower end of the metering hopper (4), the feed pipe (41) is connected to the mixing drum (2), a weighing sensor (42) is provided below the metering hopper (4), and a solenoid valve (43) is provided on the feed pipe (41).

2. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: A plurality of first nozzles (1311) are fixedly arranged at the lower side of the first cleaning pipe (131), a protective shell (1312) is arranged between the first cleaning pipe (131) and the crushing box (12), the protective shell (1312) is fixedly connected to the cleaning box (13), the protective shell (1312) is composed of two long strips, the connection between the two long strips is located above the unconnected part of the two long strips, and the first cleaning pipe (131) is located within the angle between the two long strips.

3. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: The cleaning box (13) is provided with a discharge port on a side wall near the lowest end of the water filter net (132). The cleaning box (13) is provided with a cleaning door (133) at the discharge port. The water filter net (132) is located between the upper end surface and the lower end surface of the discharge port. The upper end of the cleaning door (133) is hinged to the cleaning box (13). An opening and closing cylinder (134) is hinged to the outer wall of the cleaning box (13). The telescopic end of the opening and closing cylinder (134) is hinged to the cleaning door (133). The conveyor belt (3) is provided with a plurality of baffles (31) along the rotation direction. The conveyor belt (3) comprises a low flat portion (32), an inclined portion (33) and a high flat portion (34). The upper end surface of the baffle (31) on the low flat portion (32) is located below the cleaning door (133), and the high flat portion (34) is located above the feed hopper (21).

4. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: A water pump (135) is provided at the bottom of the cleaning box (13); the water pump (135) is connected to a plurality of second cleaning pipes (136) arranged in an oblique direction of the water filter net (132); the plurality of second cleaning pipes (136) are located below the water filter net (132); a plurality of second nozzles (1361) are fixedly provided on the upper side of the second cleaning pipes (136); and a water purifier (1351) is provided at the water inlet of the water pump (135).

5. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: A hot air blower (141) is provided at the top of the drying box (14), and a heating wire (142) is provided on the inner wall of the drying box in the opposite direction of rotation of the conveyor belt (3).

6. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 3, characterized in that: A pushing cylinder (137) is fixedly provided on the outer wall of the cleaning box (13) at a side away from the cleaning door (133); a pushing plate (138) is fixedly connected to the telescopic end of the pushing cylinder (137); the pushing plate (138) is located in the cleaning box (13); the lower end surface of the pushing plate (138) abuts against the upper end surface of the water filter net (132); the side wall of the pushing plate (138) parallel to the telescopic direction of the pushing cylinder (137) abuts against the side wall of the cleaning box (13); and the axial direction of the pushing cylinder (137) is parallel to the inclination direction of the upper end surface of the water filter net (132).

7. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: A stirring motor (22) is fixedly arranged on the upper end surface of the stirring drum (2), a plurality of stirring blades (23) are evenly distributed along the axis of the stirring drum (2) are arranged in the stirring drum, a rotating shaft of the stirring motor is fixedly connected to the stirring blades (23), and a heating element (24) is arranged on the inner wall of the stirring drum (2).

8. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: A discharge pipe (25) is provided at the lower end of the mixing drum (2), a feeding device (5) for transporting the molding die is provided below the discharge pipe (25), and a valve (26) is provided on the discharge pipe (25).

9. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: The weighing hopper (4) is provided with an agitator (44).

10. The highly chemical erosion resistant recycled concrete preparation equipment according to claim 1, characterized in that: It also includes an intelligent control system and a remote monitoring system. The intelligent control system is used to realize the automated production of the equipment, and the remote monitoring system is used to realize the remote monitoring and control of the equipment.

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