Preparation method for recycled concrete

Abstract

The invention discloses a preparation method for recycled concrete, which comprises the following steps: S1, resetting and correcting: firstly, checking a processing box, and adjusting and correcting each structural member to ensure that the orientation of each structural member is in an initial state before the recycled concrete preparation work, S2, setting parameters: opening all separation valves, rotating a screw rod, and adjusting the position of each structural member in the initial state before the recycled concrete preparation work is carried out; when the air pressure in each limiting box reaches a corresponding value, the separating valve corresponding to the limiting box is closed, the gravity of each raw material can be doubly converted and utilized, the influence of external interference and property difference among the materials on the proportioning ratio is reduced, the stability and the efficiency of raw material proportioning work are improved, the amount of each raw material is automatically and synchronously regulated and controlled, and the raw material proportioning efficiency is improved. The raw material ratio accuracy and reliability are improved, stepless adjustment is achieved, the demand relation between the recycled aggregate utilization rate and the concrete strength is effectively synthesized, the preparation work of the recycled concrete is more flexible, and the application range of the recycled concrete is widened.

Description

Technical Field

[0001] The invention relates to the technical field of recycled concrete preparation, and in particular to a method for preparing recycled concrete. Background Art

[0002] Recycled concrete refers to new concrete made by crushing, cleaning, and grading discarded concrete blocks, mixing them with grading in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel, and then adding cement, water, etc. According to the "Ordinary Concrete Mix Design Code" JGJ55-2000, after the concrete mix ratio is determined, when the absolute value of the difference between the actual measured density of the mixture and the calculated value does not exceed 2% of the calculated value, no adjustment is required. When it is greater than 2%, corresponding adjustments should be made, and the average value should not be lower than the prepared strength value to ensure its stability.

[0003] However, in the current recycled concrete preparation process, there is a lack of effective means to adjust the proportions of various raw materials, making it difficult to achieve stepless control of the proportions of various raw materials. The raw material ratios are easily affected by external equipment and differences in the properties of the raw materials themselves. The accuracy and reliability of the control of the proportions of various raw materials are poor, and the requirements for the utilization rate of recycled materials and the strength of recycled concrete cannot be comprehensively met. As a result, the production costs of recycled concrete cannot be guaranteed, and the supply and demand relationship of recycled concrete cannot be flexibly adapted. Summary of the invention

[0004] The present invention provides a method for preparing recycled concrete, which can effectively solve the problems raised in the above-mentioned background technology that in the current recycled concrete preparation process, there is a lack of effective means for adjusting the proportions of various raw materials, it is difficult to achieve stepless regulation of the proportions of various raw materials, and the raw material ratios are easily interfered by external equipment and differences in the properties of the raw materials themselves. The accuracy and reliability of the regulation of the proportions of various raw materials are poor, and the requirements for the utilization rate of recycled materials and the strength of recycled concrete cannot be comprehensively met, so that the production cost of recycled concrete cannot be guaranteed and the supply and demand relationship of recycled concrete cannot be flexibly adapted.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for preparing recycled concrete, comprising the following steps:

[0006] S1. Reset and correction: First, the processing box should be checked and each structural component should be adjusted and corrected to ensure that the position of each structural component is in the initial state before the recycled concrete preparation work is carried out;

[0007] S2, parameter setting: open all the separation valves, rotate the screw, and when the air pressure inside each limit box reaches the corresponding value, close the corresponding separation valve, control the air pressure inside each limit box, and adjust and limit the proportion of each raw material input;

[0008] S3, raw material preparation: raw materials fall into the batching chamber from the feed hopper. When each raw material reaches the set value, the cross plug will switch the conduction state of the corresponding docking port, feed hopper and lower hopper to accurately control the proportion of each raw material input;

[0009] S4. Mixing and forming: Press the switch to send the prepared raw materials into the discharge chamber. Driven by the motor, the raw materials are diverted and guided, and the mixed raw materials are repeatedly turned over and stirred to improve the uniformity of the recycled concrete output.

[0010] Preferably, a discharge hopper is installed at the bottom of the side end surface of the processing box, an explosion-proof glass window is embedded and installed at the top of the side end surface of the processing box, and a load conversion mechanism is installed at the top of the discharge hopper;

[0011] The load conversion mechanism includes a batching chamber, a material receiving seat, a circular card seat, a column, a support plate, a support rod, a partition box, a connecting pipe, a double-dividing plate, a diverging pipe, a mixing box, a cross plug, a docking port, a limit box, a piston, a push rod, an elastic block, a conducting pipe, an adjusting box, a screw, a slider, a gas pipe, a partition valve, a pressure gauge, a feed hopper and a discharge hopper;

[0012] A batching chamber is provided inside the processing box at a position corresponding to the explosion-proof glass window, a material receiving seat is slidably installed inside the batching chamber, a round-shaped card seat is installed at the bottom of the material receiving seat, a column is installed at the top corner of the round-shaped card seat, a support plate is slidably installed inside the column, a support rod is installed at the middle of the top of the support plate, and the top of the support rod is fixedly connected to the bottom corner of the material receiving seat;

[0013] A partition box is installed at the position of the side end surface of the processing box corresponding to the round-shaped card seat, a connecting pipe is installed at the bottom of the side end surface of the partition box, and the end of the connecting pipe is connected to the inner cavity of the round-shaped card seat, a double-dividing plate is slidably installed inside the partition box, a diverging pipe is installed in the middle of the top of the partition box, and a number of mixing boxes are evenly installed at the top of the processing box, and the mixing boxes are connected to the partition box through the diverging pipe;

[0014] A cross plug is slidably installed inside the partition box, a docking port is opened in the middle of the top of the cross plug, a limit box is embedded in the other end surface of the partition box, a piston is slidably installed inside the limit box, a push rod is symmetrically installed on the side end surface of the piston, an elastic block is installed on the end of the push rod, and a conducting pipe is installed at the side end surface of the mixing box corresponding to the mixing box position;

[0015] An adjusting box is installed on the top of the other end surface of the processing box, a screw is embedded and rotatably installed in the middle of the side end surface of the adjusting box, a slider is installed through a thread at the outside of the screw at the internal position of the adjusting box, and the slider is slidably connected to the adjusting box, an air pipe is installed on the top edge of the adjusting box, a separating valve is embedded and installed in the middle of the top of the limit box, and the limit box is connected to the air pipe through the separating valve, a pressure gauge is embedded and installed in the middle of the side end surface of the limit box, a feed hopper is installed in the middle of the top of the processing box, and a lower hopper is installed in the middle of the bottom of the processing box.

[0016] Preferably, a discharge seat is installed at the bottom end of the material receiving seat, an electric push rod is installed in the middle of the side end surface of the discharge seat, a gate plate is installed at the end of the electric push rod, and the gate plate is slidably installed inside the discharge seat.

[0017] Preferably, a rotation valve is embedded and installed at a position in the middle of the top of the partition box corresponding to the end of the divergent pipe, and a switch is installed on the side end face of the processing box at the bottom of the explosion-proof glass window. The switch is an electric push rod and a rotation valve control switch, and the electric push rod and the rotation valve input end are electrically connected to the switch output end, and the switch input end is electrically connected to the external power supply output end.

[0018] Preferably, the interior of the partition box, the round-shaped card seat and the column tube located between the double-split plate and the support plate is filled with hydraulic fluid, and the interior of the partition box located on the top of the double-split plate is filled with air.

[0019] Preferably, the length of the cross plug is three times the length of the docking interface, the length of the inner cavity of the mixing box is six times the length of the docking interface, the length of the limit box embedded in the mixing box is equal to the length of the docking interface, and the length of the docking interface is equal to the length of the ejector rod;

[0020] The force area of ​​the piston is equal to the force area of ​​the cross plug, the force area of ​​the support plate is equal to 2.5 times the force area of ​​the double-split plate, the force area of ​​the double-split plate is equal to the force area of ​​the cross plug, the inside of the adjustment box is filled with air, and the cross-sectional area of ​​the slider is equal to the force area of ​​the cross plug.

[0021] Preferably, a parallel material turning mechanism is installed outside the load conversion mechanism, and the parallel material turning mechanism includes a material discharge chamber, a rotating drum, a centrifugal guide seat, a flow distribution branch plate, a convex plate, a rotating shaft, a propeller blade, a motor, a main gear, an arc-shaped mouth, a driving gear plate, a steering gear plate, a sub-gear, a gear belt, a cross bar, a mounting frame, a fishbone plate, a rotating rod, a synchronous gear, a connecting gear, a flow distribution guide seat, an inner partition plate and an outer gear ring;

[0022] A material discharge chamber is provided at the bottom of the batching chamber inside the processing box, and the top of the material discharge chamber is connected with the bottom of the batching chamber, a rotating drum is rotatably installed inside the material discharge chamber, a centrifugal guide seat is installed at the top of the rotating drum, a plurality of flow dividing branches are installed at equal angles along the circumferential direction at the top edge of the centrifugal guide seat, a convex plate is installed at the top of the flow dividing branch plate, a rotating shaft is rotatably installed at the middle of the bottom end of the rotating drum, and a propeller blade is installed at the outer side of the rotating shaft at a position inside the rotating drum;

[0023] An electric motor is installed at the position of the rotating shaft corresponding to the bottom end of the processing box, a main gear is installed at the end of the motor output shaft, and the top of the main gear is connected to the bottom end of the rotating shaft, an arc-shaped opening is symmetrically opened at the bottom of the outer curved surface of the rotating drum, a driving gear disc is installed at the edge of the bottom end of the rotating drum, a steering gear disc is rotatably installed at the position of the driving gear disc corresponding to the bottom end of the unloading chamber, a sub-gear is installed at the bottom end of the steering gear disc, a gear belt is sleeved on the outside of the sub-gear, a plurality of cross bars are evenly and equidistantly installed on one side of the outer curved surface of the rotating drum, a mounting frame is installed on the other side of the outer curved surface of the rotating drum, and a fishbone plate is rotatably installed inside the mounting frame;

[0024] A transmission box is installed at the position of the gear belt on the side end face of the processing box, a rotating rod is rotatably installed inside the transmission box, a synchronous gear is installed at the bottom end of the rotating rod, a connecting gear is installed at the top end of the rotating rod, a diverter guide seat is installed at the position of the connecting gear inside the batching chamber, an inner partition is rotatably installed inside the diverter guide seat, and an outer gear ring is installed on the outer curved surface of the inner partition.

[0025] Preferably, the main gear, the auxiliary gear and the synchronous gear are all meshed with the gear belt through gear teeth, the driving sprocket is meshed with the steering sprocket through gear teeth, and the connecting gear is meshed with the outer gear ring through gear teeth.

[0026] Preferably, the centrifugal guide seat and the top surface of the convex plate are both conical surfaces, the top surface of the convex plate is provided with a plurality of diversion grooves at equal angles along the circumferential direction, the height of the diversion branch plate is greater than the thickness of the centrifugal guide seat, and the top surface of the diversion guide seat is in contact with the top of the batching chamber.

[0027] Preferably, the bottom end of the arc-shaped opening is flush with the bottom end of the discharge chamber, the arc-shaped opening and the discharge hopper are at the same horizontal height, and a partition is slidably embedded at the top of the discharge hopper near one side of the processing box.

[0028] Compared with the prior art, the invention has the following beneficial effects: the invention has a scientific and reasonable structure and is safe and convenient to use;

[0029] 1. It is equipped with a load conversion mechanism. Through the cooperation of the material receiving seat, the round-shaped card seat, the column, the support plate, the support rod, the partition box, the connecting pipe and the double-dividing plate, the gravity of each raw material can be double-converted and utilized. The gravity ratio of each raw material can be used as the basis for measuring the raw material ratio, which greatly reduces the influence of external interference and the property difference between materials on the ratio of ingredients, making the batching work more convenient and effective, greatly improving the stability and efficiency of the raw material ratio work, and providing a buffer space and a force unloading platform, which can effectively reduce the impact of raw material delivery on the equipment, improve the durability of the device, greatly reduce the failure rate of the equipment, and improve the continuous stability of the recycled concrete preparation work;

[0030] On the other hand, it can be equipped with a mixing box, a cross plug, a docking port, a limit box, a piston, a push rod and an elastic block to limit the gravity of each raw material, so as to realize the synchronous switching of raw material delivery and automatically adjust the amount of each raw material put into the mixing chamber synchronously, so that the raw material proportioning work can be carried out more continuously, more efficiently and more stably, and the raw material mixing work can be more timely and effective.

[0031] 2. The raw material throttling structure can be constructed by matching the mixing box, cross plug, docking port, limit box, piston, ejector rod and elastic block, which greatly improves the accuracy and reliability of the raw material ratio. The adjustment box, screw and slider can be matched to conveniently adjust the ratio of each raw material, accurately limit the proportion of recycled aggregate according to actual needs, and realize stepless adjustment of the strength of recycled concrete. The strength value of concrete can be adaptively limited according to actual needs, effectively integrating the relationship between the utilization rate of recycled aggregate and the strength requirement of concrete, making the preparation of recycled concrete more flexible and efficient, improving the output diversity of recycled concrete, and equivalently improving its scope of application;

[0032] By coordinating the diverging pipe, the conducting pipe and the air transmission pipe, a complete pneumatic transmission path can be constructed. On the one hand, the stability, fluency and reliability of the gravity conversion and utilization of raw materials can be greatly improved, making the gravity conversion of raw materials more stable and efficient, and effectively ensuring the continuous efficiency of the raw material proportioning work. On the other hand, with the detection function of the pressure gauge and the flow limiting function of the separation valve, the proportion of each raw material can be accurately limited, greatly improving the convenience and effectiveness of the raw material proportion limitation work. With the pressure conversion function of the separation box and the double separation plate, the pressure in the raw material mixing process can be effectively reduced. While reducing the difficulty of mixing, the working pressure of the equipment can be reduced, effectively improving the working stability and reliability of the equipment.

[0033] 3. A parallel material turning mechanism is provided. Through the cooperation of the rotating drum, the centrifugal guide seat, the diversion support plate, the convex plate, the rotating shaft and the propeller blade, a material turning and lifting structure can be constructed to guide the migration of the mixed raw materials in the material discharge chamber, and with the centrifugal traction effect, the mixed raw materials are promoted to circulate, so as to achieve the double blending of the raw materials from the inside to the outside and from the bottom to the top, which can effectively avoid the dead angle of raw material mixing, make the raw material ratio of each raw material more balanced and stable, make the output strength of the recycled concrete more uniform, and effectively improve the output quality of the recycled concrete. With the diversion effect of the convex plate and the diversion trough, the centrifugal force can be fully utilized to conduct preliminary dispersion and guidance of each raw material, which can effectively reduce the difficulty of mixing the various raw materials of the concrete. In addition, the two-way stirring effect of the cross bar, the mounting frame and the fishbone plate can greatly improve the mixing efficiency of the concrete.

[0034] Through the coordination of the diversion guide seat, the inner partition and the outer gear ring, the raw materials can be dispersed and guided to avoid local accumulation of raw materials and ensure the stability of the raw material mixing work. The raw material ratio mixing work of the load conversion mechanism can greatly reduce the time proportion of the recycled slow-setting soil mixing work and improve the mixing efficiency. Through the coordination of the electric motor, the main gear, the arc mouth, the driving gear plate, the steering gear plate, the auxiliary gear, the gear belt, the synchronous gear and the connecting gear, a driving force transmission conversion structure can be constructed, which can make the conversion of driving force smoother and more stable, and improve the connection stability and compatibility between the components.

[0035] To sum up, the preparation method of recycled concrete can effectively carry out dual conversion and utilization of the gravity of each raw material, realize stepless regulation of the proportion of each raw material, greatly improve the convenience, stability and efficiency of raw material mixing, improve the accuracy of raw material mixing, and effectively reduce the dead corners of raw material mixing, so that the output performance of recycled concrete is more balanced and stable, and can flexibly meet the comprehensive demand relationship between the recycling rate of recycled aggregates and the strength of concrete, and improve the flexibility, efficiency and adaptability of recycled concrete preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached picture:

[0038] Figure 1 is a flow chart of the steps of the preparation method of the present invention;

[0039] Figure 2 It is a schematic diagram of the installation structure of the present invention;

[0040] Figure 3 It is a schematic diagram of the transmission box installation structure of the present invention;

[0041] Figure 4It is a schematic diagram of the structure of the load conversion mechanism of the present invention;

[0042] Figure 5 It is a schematic diagram of the installation structure of the partition box of the present invention;

[0043] Figure 6 It is a schematic diagram of the cross plug installation structure of the present invention;

[0044] Figure 7 It is a schematic diagram of the installation structure of the lower hopper of the present invention;

[0045] Figure 8 It is a structural schematic diagram of the parallel material turning mechanism of the present invention;

[0046] Fig. 9 It is a schematic diagram of the fishbone plate installation structure of the present invention;

[0047] Fig.10 is a partial exploded view of the present invention;

[0048] Numbers in the figure: 100, processing box; 101, discharge hopper; 102, explosion-proof glass window; 103, rotation valve; 104, discharge seat; 105, electric push rod; 106, gate; 107, switch; 108, partition; 109, transmission box;

[0049] 200, load conversion mechanism; 201, batching chamber; 202, material receiving seat; 203, circular card seat; 204, column; 205, support plate; 206, support rod; 207, partition box; 208, connecting pipe; 209, double partition plate; 210, divergent pipe; 211, mixing box; 212, cross plug; 213, docking port; 214, limit box; 215, piston; 216, ejector rod; 217, elastic block; 218, conducting pipe; 219, regulating box; 220, screw; 221, slider; 222, gas pipe; 223, partition valve; 224, pressure gauge; 225, feed hopper; 226, lower hopper;

[0050] 300, parallel turning mechanism; 301, unloading chamber; 302, rotating drum; 303, centrifugal guide seat; 304, diversion support plate; 305, convex plate; 306, rotating shaft; 307, propeller blade; 308, motor; 309, main gear; 310, arc-shaped mouth; 311, driving gear plate; 312, steering gear plate; 313, auxiliary gear; 314, gear belt; 315, cross bar; 316, mounting frame; 317, fishbone plate; 318, rotating rod; 319, synchronous gear; 320, connecting gear; 321, diversion guide seat; 322, inner partition; 323, outer gear ring;

[0051] 3051. Diversion trough. DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] Example: Figure 1 As shown, the present invention provides a technical solution, a method for preparing recycled concrete, comprising the following steps:

[0054] S1. Reset and correction: First, the processing box 100 should be checked, and each structural component should be adjusted and corrected to ensure that the position of each structural component is in the initial state before the recycled concrete preparation work is carried out;

[0055] S2, parameter setting: open all the separation valves 223, rotate the screw 220, and when the internal air pressure of each limit box 214 reaches the corresponding value, close the corresponding separation valve 223, control the internal air pressure of each limit box 214, and adjust and limit the proportion of each raw material input;

[0056] S3, raw material preparation: the raw materials fall into the batching chamber 201 from the feed hopper 225. When the raw materials reach the set value, the cross plug 212 will switch the corresponding connection state of the docking port 213, the feed hopper 225 and the lower hopper 226 to accurately control the proportion of the raw materials input;

[0057] S4, blending and molding: Press the switch 107 to send the prepared raw materials into the discharge chamber 301. Driven by the motor 308, the raw materials are diverted and guided, and the mixed raw materials are repeatedly turned over and stirred to improve the uniformity of the output of recycled concrete.

[0058] like Figure 2-10 As shown, a discharge hopper 101 is installed at the bottom of the side end surface of the processing box 100, an explosion-proof glass window 102 is embedded and installed at the top of the side end surface of the processing box 100, and a load conversion mechanism 200 is installed at the top of the discharge hopper 101;

[0059] The load conversion mechanism 200 includes a batching chamber 201, a material receiving seat 202, a circular card seat 203, a column 204, a support plate 205, a support rod 206, a partition box 207, a connecting pipe 208, a double-dividing plate 209, a diverging pipe 210, a mixing box 211, a cross plug 212, a docking port 213, a limit box 214, a piston 215, a push rod 216, an elastic block 217, a conducting pipe 218, an adjusting box 219, a screw 220, a slider 221, an air pipe 222, a partition valve 223, a pressure gauge 224, a feed hopper 225 and a lower hopper 226;

[0060] A batching chamber 201 is provided inside the processing box 100 at the position corresponding to the explosion-proof glass window 102, a material receiving seat 202 is slidably installed inside the batching chamber 201, a discharge seat 104 is installed at the bottom end of the material receiving seat 202, an electric push rod 105 is installed in the middle of the side end surface of the discharge seat 104, a gate plate 106 is installed at the end of the electric push rod 105, and the gate plate 106 is slidably installed inside the discharge seat 104 to improve the convenience of feeding materials, a round-shaped card seat 203 is installed at the bottom of the material receiving seat 202, a column 204 is installed at the top corner of the round-shaped card seat 203, a support plate 205 is slidably installed inside the column 204, a support rod 206 is installed in the middle of the top of the support plate 205, and the top of the support rod 206 is fixedly connected to the bottom corner of the material receiving seat 202;

[0061] A partition box 207 is installed at the position of the side end surface of the processing box 100 corresponding to the round-shaped card seat 203, a connecting pipe 208 is installed at the bottom of the side end surface of the partition box 207, and the end of the connecting pipe 208 is connected to the inner cavity of the round-shaped card seat 203, a double-dividing plate 209 is slidably installed inside the partition box 207, and the inside of the partition box 207, the round-shaped card seat 203 and the column 204 are filled with hydraulic fluid at the position between the double-dividing plate 209 and the support plate 205, and the inside of the partition box 207 is filled with air at the top of the double-dividing plate 209, so as to convert and utilize the gravity of the raw materials;

[0062] A diverging pipe 210 is installed in the middle of the top of the partition box 207, and a rotation valve 103 is embedded and installed at the middle of the top of the partition box 207 corresponding to the end of the diverging pipe 210. A switch 107 is installed at the bottom of the explosion-proof glass window 102 on the side face of the processing box 100. The switch 107 is a switch controlled by an electric push rod 105 and a rotation valve 103. The input end of the electric push rod 105 and the rotation valve 103 is electrically connected to the output end of the switch 107. The input end of the switch 107 is electrically connected to the output end of the external power supply, so as to improve the smoothness of the batching work. A number of mixing boxes 211 are evenly and equidistantly installed at the top of the processing box 100, and the mixing boxes 211 are connected to the partition box 207 through the diverging pipe 210;

[0063] A cross plug 212 is slidably installed inside the partition box 207, and a docking port 213 is provided in the middle of the top of the cross plug 212. A limit box 214 is embedded and installed on the other end face of the partition box 207. A piston 215 is slidably installed inside the limit box 214. A push rod 216 is symmetrically installed on the side end face of the piston 215. The length of the cross plug 212 is three times the length of the docking port 213. The length of the inner cavity of the mixing box 211 is six times the length of the docking port 213. The limit box 214 is embedded in the mixing box 211. The length of the docking port 213 is equal to the length of the push rod 216, so as to accurately limit the proportion of each raw material. An elastic block 217 is installed on the end of the push rod 216, and a conducting pipe 218 is installed at the side end face of the mixing box 211 corresponding to the position of the mixing box 211.

[0064] An adjustment box 219 is installed on the top of the other end face of the processing box 100. The force area of ​​the piston 215 is equal to the force area of ​​the cross plug 212. The force area of ​​the support plate 205 is equal to 2.5 times the force area of ​​the double-split plate 209. The force area of ​​the double-split plate 209 is equal to the force area of ​​the cross plug 212. The inside of the adjustment box 219 is filled with air. The cross-sectional area of ​​the slider 221 is equal to the force area of ​​the cross plug 212, so as to reduce the difficulty of adjustment and reduce the working pressure. A screw 220 is embedded and rotatably installed in the middle of the side end face of the adjustment box 219.

[0065] A slider 221 is installed on the outside of the screw 220 at an internal position of the regulating box 219 through a thread, and the slider 221 is slidably connected to the regulating box 219, an air pipe 222 is installed on the top edge of the regulating box 219, a separating valve 223 is embedded in the middle of the top of the limit box 214, and the limit box 214 is connected to the air pipe 222 through the separating valve 223, a pressure gauge 224 is embedded in the middle of the side end face of the limit box 214, a feed hopper 225 is installed in the middle of the top of the processing box 100, and a lower hopper 226 is installed in the middle of the bottom of the processing box 100.

[0066] A parallel material turning mechanism 300 is installed outside the load conversion mechanism 200, and the parallel material turning mechanism 300 includes a material discharge chamber 301, a rotating drum 302, a centrifugal guide seat 303, a flow dividing branch plate 304, a convex plate 305, a rotating shaft 306, a propeller blade 307, a motor 308, a main gear 309, an arc-shaped mouth 310, a driving gear disc 311, a steering gear disc 312, a sub-gear 313, a gear belt 314, a cross bar 315, a mounting frame 316, a fishbone plate 317, a rotating rod 318, a synchronous gear 319, a connecting gear 320, a flow dividing guide seat 321, an inner partition plate 322 and an outer gear ring 323;

[0067] The processing box 100 is provided with a material discharge chamber 301 at the bottom of the batching chamber 201, and the top of the material discharge chamber 301 is connected to the bottom of the batching chamber 201. A rotating drum 302 is rotatably installed in the material discharge chamber 301, and a centrifugal guide seat 303 is installed at the top of the rotating drum 302. A plurality of flow dividing branches 304 are installed at equal angles along the circumferential direction at the top edge of the centrifugal guide seat 303. A convex plate 305 is installed at the top of the flow dividing branch plate 304. The centrifugal guide seat 303 and the convex plate 305 are connected to the bottom of the batching chamber 201. The top surfaces of the plates 305 are all conical surfaces. The top surface of the convex plate 305 is provided with a plurality of diverter grooves 3051 at equal angles along the circumferential direction. The height of the diverter branch plate 304 is greater than the thickness of the centrifugal guide seat 303. The top surface of the diverter guide seat 321 fits with the top of the batching chamber 201 so as to divert and guide the raw materials. A rotating shaft 306 is rotatably installed at the middle of the bottom end of the rotating drum 302. A propeller blade 307 is installed at the outer side of the rotating shaft 306 at the inner position of the rotating drum 302.

[0068] A motor 308 is installed at the position of the rotating shaft 306 corresponding to the bottom of the processing box 100, and a main gear 309 is installed at the end of the output shaft of the motor 308, and the top of the main gear 309 is connected to the bottom of the rotating shaft 306. The bottom of the outer curved surface of the rotating drum 302 is symmetrically opened with an arc-shaped opening 310, and the bottom of the arc-shaped opening 310 is flush with the bottom of the unloading chamber 301. The arc-shaped opening 310 and the discharge hopper 101 are at the same horizontal height. The top of the discharge hopper 101 is close to the side of the processing box 100 and is embedded with a partition 108 for sliding installation. In order to improve the compatibility of the unloading work, a driving gear disc 311 is installed at the bottom edge of the rotating drum 302, a steering gear disc 312 is rotatably installed at the position of the driving gear disc 311 at the bottom of the unloading chamber 301, a sub-gear 313 is installed at the bottom of the steering gear disc 312, and a gear belt 314 is sleeved on the outer side of the sub-gear 313. A plurality of cross bars 315 are evenly installed at an equal distance on one side of the outer curved surface of the rotating drum 302, and a mounting frame 316 is installed on the other side of the outer curved surface of the rotating drum 302, and a fishbone plate 317 is rotatably installed inside the mounting frame 316;

[0069] A transmission box 109 is installed at the position of the gear belt 314 on the side end face of the processing box 100, a rotating rod 318 is rotatably installed inside the transmission box 109, a synchronous gear 319 is installed at the bottom of the rotating rod 318, a connecting gear 320 is installed at the top of the rotating rod 318, a diverter guide seat 321 is installed at the position corresponding to the connecting gear 320 inside the batching chamber 201, an inner partition 322 is rotatably installed inside the diverter guide seat 321, an outer gear ring 323 is installed on the outer curved surface of the inner partition 322, the main gear 309, the sub-gear 313 and the synchronous gear 319 are all meshed with the gear belt 314 through gear teeth, the driving sprocket 311 is meshed with the steering sprocket 312 through gear teeth, and the connecting gear 320 is meshed with the outer gear ring 323 through gear teeth, so as to improve the stability of driving force transmission and conversion.

[0070] The working principle and use process of the present invention: In actual use, before carrying out the batching work, the processing box 100 should be checked first, and the various structural parts should be adjusted and calibrated to ensure that the positions of the various structural parts are in the initial state before the recycled concrete preparation work is carried out;

[0071] In the initial state, the double-split plate 209 will compress the bottom hydraulic fluid under the action of the top air pressure, and with the connecting and diverting effect of the connecting pipe 208 and the round-shaped card seat 203, the hydraulic fluid will be pressed into the column 204, so that the support rod 206 is just fully extended. At this time, the air pressure on the top of the double-split plate 209 just offsets the gravity of the component itself, so as to avoid the influence of the device's own weight on the batching. This state can be corrected and adjusted by filling and discharging air into the partition box 207. The rotation valve 103 is in the open state in the initial state, and the electric push rod 105 is in the extended state in the initial state. At this time, the gate 106 blocks the discharge seat 104, and the discharge seat 104 is in a closed state. This state can be reversed by pressing the switch 107;

[0072] Similarly, in the initial state, the air pressure inside the mixing box 211 and the limit box 214 is lower than the air pressure inside the separation box 207, and the separation valve 223 is in a closed state, that is, at this time, the cross plug 212 will slide to the side of the limit box 214 under the action of the pressure difference, and fit with the elastic block 217, so that the top rod 216 is retracted into the limit box 214. Here, for the convenience of the following description, each mixing box 211 is defined, and each mixing box 211 is from the side of the explosion-proof glass window 102 to the side of the transmission box 109, which is a recycled material box, a natural material box, a cement material box and a water box in sequence;

[0073] Open the separation valve 223 on the recycled material box, rotate the screw 220, drive the slider 221 to move, and press the air inside the regulating box 219 into the limit box 214 corresponding to the recycled material box through the air pipe 222 to adjust the internal air pressure, which is defined as M here. Under the conduction effect of the corresponding conduction pipe 218, the internal air pressure of the natural material box will also change to M synchronously;

[0074] At this time, under the action of the air pressure M, the piston 215 inside the limit box 214 corresponding to the recycled material box will push the corresponding cross plug 212 through the push rod 216, so that the corresponding docking port 213 and the feed hopper 225 and the lower hopper 226 are in a conducting state, and the cross plug 212 inside the natural material box will be displaced to one side of the diverging pipe 210 under the action of the air pressure M, and abut against the other side wall of the natural material box, so that the corresponding docking port 213, the feed hopper 225 and the lower hopper 226 are in a dislocated and blocked state;

[0075] Next, the separation valve 223 on the recycled material box is closed, and the separation valve 223 on the natural material box is opened. The screw 220 is rotated again to press the air inside the regulating box 219 into the limit box 214 corresponding to the natural material box through the air delivery pipe 222 to adjust the internal air pressure, which is defined as N here. Under the conduction effect of the corresponding conduction pipe 218, the internal air pressure of the cement material box will also become N synchronously.

[0076] At this time, under the action of the air pressure N, the piston 215 inside the limit box 214 corresponding to the natural material box will press the corresponding push rod 216, so that the push rod 216 is fully extended, and the cross plug 212 inside the cement material box will be displaced to one side of the diverging pipe 210 under the action of the air pressure N, and abut against the other side wall of the cement material box, so that the corresponding docking port 213, the feed hopper 225 and the lower hopper 226 are in a dislocated and blocked state;

[0077] Next, the separation valve 223 on the natural material box is closed, and the separation valve 223 on the cement material box is opened. The screw 220 is rotated again to press the air inside the regulating box 219 into the limit box 214 corresponding to the cement material box through the air delivery pipe 222 to adjust the internal air pressure, which is defined as W here. Under the conduction effect of the corresponding conduction pipe 218, the internal air pressure of the cement material box will also change to W synchronously.

[0078] At this time, under the action of air pressure W, the piston 215 inside the limit box 214 of the cement material box will press the corresponding push rod 216, so that the push rod 216 is fully extended, and the cross plug 212 inside the water box will be displaced to one side of the diverging pipe 210 under the action of air pressure W, and abut against the other side wall of the cement material box, so that the corresponding docking port 213, the feed hopper 225 and the lower hopper 226 are in a dislocated and blocked state;

[0079] Next, the separation valve 223 on the cement material box is closed, the separation valve 223 on the water box is opened, and the screw 220 is rotated again to press the air inside the regulating box 219 into the limit box 214 corresponding to the water box through the air pipe 222 to adjust the internal air pressure, which is defined as U here;

[0080] Here, the sizes of M, N, W and U increase in sequence. For the adjustment work, all the separation valves 223 can be opened at once. When the air pressure inside each limit box 214 reaches the corresponding value, the corresponding separation valve 223 can be closed. Here, under the action of M, N, W and U, the pressures borne by each piston 215 are A, B, C and D in sequence. In a single preparation of recycled concrete, A is one-tenth of the weight of the recycled material input, the difference between B and A is one-tenth of the weight of the natural material input, the difference between C and B is one-tenth of the weight of the cement input, and the difference between D and C is one-tenth of the weight of the water input. By controlling the ratio of M, N, W and U, the ratio of each raw material input can be accurately regulated.

[0081] During the raw material mixing process of recycled concrete, the recycled material falls into the recycled material box from the feed hopper 225 corresponding to the recycled material box, passes through the corresponding interface 213, enters the batching chamber 201 from the lower hopper 226, and falls to the material receiving seat 202. When the material receiving seat 202 sinks under the action of gravity, the support plate 205 presses the bottom hydraulic fluid, causing the hydraulic pressure and air pressure inside the partition box 207 to rise synchronously. Under the conduction effect of the diverging pipe 210, the air pressure on the other end surface of each cross plug 212 rises synchronously.

[0082] When the air pressure is equal to M, the regenerated material on the receiving seat 202 reaches the set value, which will push the cross plug 212 inside the regenerated material box to move toward the limit box 214, overcome the air pressure on the corresponding piston 215, and make the push rod 216 completely retracted into the limit box 214, so that the corresponding docking port 213, the feed hopper 225 and the lower hopper 226 are in a dislocated and blocked state;

[0083] The cross plug 212 inside the natural material box will also be displaced at the same time, so that the corresponding docking port 213, feed hopper 225 and lower hopper 226 are in a conducting state. At this time, the recycled material can no longer enter the batching chamber 201, and the natural material begins to be added. When the air pressure is equal to N, the natural material on the material receiving seat 202 reaches the set value, and the cross plug 212 inside the natural material box will overcome the air pressure N on the corresponding piston 215 and further displace, so that the corresponding docking port 213, feed hopper 225 and lower hopper 226 are in a dislocated and blocked state;

[0084] The cross plug 212 inside the cement material box will also move at the same time, so that the corresponding docking port 213, feed hopper 225 and lower hopper 226 are in a conducting state, the feeding of natural materials is stopped, and the feeding of cement is started. By analogy, when the air pressure reaches W, the feeding of cement is stopped and water injection is started. When the air pressure reaches U, the water injection is stopped. At this time, the raw materials of the material receiving seat 202 reach the set value.

[0085] Then, the switch 107 is pressed, and the switch 107 will reverse the states of the rotation valve 103 and the electric push rod 105, close the rotation valve 103, open the discharge seat 104, and the prepared raw materials will pass through the discharge seat 104 and fall into the unloading chamber 301 for further blending and mixing. After the raw materials have completely fallen into the unloading chamber 301, the switch 107 is pressed again to reset each structure under the action of air pressure. While further blending is being carried out in the unloading chamber 301, a new round of raw material proportioning is carried out in the proportioning chamber 201.

[0086] In the above process, driven by the motor 308, the main gear 309 drives the synchronous gear 319 to rotate through the gear belt 314, and the synchronous gear 319 drives the connecting gear 320 to rotate synchronously through the rotating rod 318, forcing the inner partition plate 322 to rotate synchronously under the drive of the outer gear ring 323. When the raw materials fall into the batching chamber 201, they are diverted and guided so that the raw materials fall evenly onto the receiving seat 202.

[0087] At the same time, the main gear 309 will drive the propeller blade 307 to rotate by rotating the shaft 306, and under the drive of the secondary gear 313, the steering gear plate 312 will drive the rotating drum 302 to rotate in the opposite direction synchronously through the driving gear plate 311, thereby forcing the centrifugal guide seat 303, the flow distribution branch plate 304 and the convex plate 305 to rotate in the opposite direction synchronously, and the cross bar 315 and the mounting frame 316 will also rotate in the opposite direction synchronously with the rotating drum 302;

[0088] In the above process, the raw materials falling into the discharge chamber 301 will fall onto the convex plate 305. Under the guiding effect of the diverter groove 3051 and the centrifugal effect, the raw materials will evenly fall into the discharge chamber 301 from the periphery of the convex plate 305. The raw materials falling into the discharge chamber 301 will enter the drum 302 through the arc-shaped mouth 310 under the action of the pressure difference, and will be sent to the top of the centrifugal guide seat 303 by the propeller blades 307. Then, under the action of centrifugal force, the raw materials will be evenly thrown into the discharge chamber 301 again through the gap between the diverter branches 304, and the rotating rod 318 will synchronously stir the raw materials in the discharge chamber 301. The fishbone plate 317 will rotate in the opposite direction to the drum 302 under the action of the pressure difference during the rotation of the drum 302, and perform reverse double stirring on the raw materials, thereby realizing multiple overturning stirring of the mixed raw materials and improving the uniformity of the output of recycled concrete.

[0089] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing recycled concrete, characterized in that: The steps include: S1. Reset and correction: First, the processing box (100) should be checked, and each structural component should be adjusted and corrected to ensure that the position of each structural component is in the initial state before the recycled concrete preparation work is carried out; S2, parameter setting: open all the separation valves (223), rotate the screw (220), and when the internal air pressure of each limit box (214) reaches a corresponding value, close the corresponding separation valve (223), control the internal air pressure of each limit box (214), and adjust and limit the proportion of each raw material input; S3, raw material preparation: the raw materials fall into the batching chamber (201) from the feed hopper (225). When the raw materials reach the set value, the cross plug (212) will switch the conduction state of the corresponding docking port (213), the feed hopper (225) and the lower hopper (226), and accurately control the proportion of the raw materials input; S4, blending and molding: Press the switch (107) to send the prepared raw materials into the discharge chamber (301). Under the drive of the motor (308), the raw materials are diverted and guided, and the mixed raw materials are repeatedly turned over and stirred to improve the uniformity of the output of recycled concrete.

2. A method for preparing recycled concrete according to claim 1, characterized in that: A discharge hopper (101) is installed at the bottom of the side end surface of the processing box (100), an explosion-proof glass window (102) is embedded and installed at the top of the side end surface of the processing box (100), and a load conversion mechanism (200) is installed at the top of the discharge hopper (101); The load conversion mechanism (200) comprises a batching chamber (201), a material receiving seat (202), a circular card seat (203), a column (204), a support plate (205), a support rod (206), a partition box (207), a connecting pipe (208), a double partition plate (209), a diverging pipe (210), a mixing box (211), a cross plug (212), a docking port (213), a limit box (214), a piston (215), a push rod (216), an elastic block (217), a conducting pipe (218), an adjusting box (219), a screw (220), a slider (221), an air pipe (222), a partition valve (223), a pressure gauge (224), a feed hopper (225) and a lower hopper (226); A batching chamber (201) is provided inside the processing box (100) at a position corresponding to the explosion-proof glass window (102), a material receiving seat (202) is slidably installed inside the batching chamber (201), a round-shaped card seat (203) is installed at the bottom of the material receiving seat (202), a column (204) is installed at the top corner of the round-shaped card seat (203), a support plate (205) is slidably installed inside the column (204), a support rod (206) is installed at the middle of the top of the support plate (205), and the top of the support rod (206) is fixedly connected to the bottom corner of the material receiving seat (202); A partition box (207) is installed at a position corresponding to the round-shaped card seat (203) on the side end surface of the processing box (100); a connecting pipe (208) is installed at the bottom of the side end surface of the partition box (207), and the end of the connecting pipe (208) is connected to the inner cavity of the round-shaped card seat (203); a double-dividing plate (209) is slidably installed inside the partition box (207); a diverging pipe (210) is installed at the middle of the top of the partition box (207); a plurality of mixing boxes (211) are evenly and equidistantly installed on the top of the processing box (100), and the mixing boxes (211) are connected to the partition box (207) through the diverging pipe (210); A cross plug (212) is slidably mounted inside the partition box (207), a docking port (213) is provided in the middle of the top of the cross plug (212), a limit box (214) is embedded and mounted on the other end surface of the partition box (207), a piston (215) is slidably mounted inside the limit box (214), a push rod (216) is symmetrically mounted on the side end surface of the piston (215), an elastic block (217) is mounted on the end of the push rod (216), and a conducting pipe (218) is mounted at the edge of the side end surface of the mixing box (211) corresponding to the position of the mixing box (211); A regulating box (219) is installed at the top of the other end surface of the processing box (100), a screw rod (220) is embedded and rotatably installed in the middle of the side end surface of the regulating box (219), a slider (221) is installed on the outside of the screw rod (220) at a position inside the regulating box (219) through a thread, and the slider (221) is slidably connected to the regulating box (219), an air supply pipe (222) is installed at the top edge of the regulating box (219), a separation valve (223) is embedded and installed in the middle of the top of the limit box (214), and the limit box (214) is connected to the air supply pipe (222) through the separation valve (223), and a pressure gauge (224) is embedded and installed in the middle of the side end surface of the limit box (214), a feed hopper (225) is installed in the middle of the top of the processing box (100), and a lower hopper (226) is installed in the middle of the bottom of the processing box (100).

3. A method for preparing recycled concrete according to claim 1, characterized in that: A discharge seat (104) is installed at the bottom end of the material receiving seat (202), an electric push rod (105) is installed in the middle of the side end surface of the discharge seat (104), a gate plate (106) is installed at the end of the electric push rod (105), and the gate plate (106) is slidably installed inside the discharge seat (104).

4. A method for preparing recycled concrete according to claim 2, characterized in that: A rotation valve (103) is embedded and installed at a position in the middle of the top end of the partition box (207) corresponding to the end position of the diverging pipe (210); a switch (107) is installed at a side end surface of the processing box (100) at a position at the bottom of the explosion-proof glass window (102); the switch (107) is a switch for controlling an electric push rod (105) and a rotation valve (103); the input ends of the electric push rod (105) and the rotation valve (103) are electrically connected to the output end of the switch (107); and the input end of the switch (107) is electrically connected to the output end of an external power supply.

5. A method for preparing recycled concrete according to claim 2, characterized in that: The interior of the partition box (207), the circular card seat (203) and the column (204) is filled with hydraulic fluid at a position between the double-split plate (209) and the support plate (205), and the interior of the partition box (207) is filled with air at a position on the top of the double-split plate (209).

6. A method for preparing recycled concrete according to claim 2, characterized in that: The length of the cross plug (212) is three times the length of the docking port (213), the length of the inner cavity of the mixing box (211) is six times the length of the docking port (213), the length of the limit box (214) embedded in the mixing box (211) is equal to the length of the docking port (213), and the length of the docking port (213) is equal to the length of the ejector rod (216); The force-bearing area of ​​the piston (215) is equal to the force-bearing area of ​​the cross plug (212), the force-bearing area of ​​the support plate (205) is equal to 2.5 times the force-bearing area of ​​the double-split plate (209), the force-bearing area of ​​the double-split plate (209) is equal to the force-bearing area of ​​the cross plug (212), the inside of the regulating box (219) is filled with air, and the cross-sectional area of ​​the slider (221) is equal to the force-bearing area of ​​the cross plug (212).

7. A method for preparing recycled concrete according to claim 2, characterized in that: A parallel material turning mechanism (300) is installed outside the load conversion mechanism (200), and the parallel material turning mechanism (300) comprises a material discharge chamber (301), a rotating drum (302), a centrifugal guide seat (303), a flow dividing branch plate (304), a convex plate (305), a rotating shaft (306), a propeller blade (307), a motor (308), a main gear (309), an arc-shaped opening (310), a driving gear disc (311), a steering gear disc (312), a secondary gear (313), a gear belt (314), a crossbar (315), a mounting frame (316), a fishbone plate (317), a rotating rod (318), a synchronous gear (319), a connecting gear (320), a flow dividing guide seat (321), an inner partition plate (322) and an outer gear ring (323); A material discharge chamber (301) is provided inside the processing box (100) at the bottom of the batching chamber (201), and the top of the material discharge chamber (301) is connected to the bottom of the batching chamber (201). A rotating drum (302) is rotatably installed inside the material discharge chamber (301), a centrifugal guide seat (303) is installed at the top of the rotating drum (302), a plurality of flow dividing branches (304) are installed at equal angles along the circumferential direction at the top edge of the centrifugal guide seat (303), a convex plate (305) is installed at the top of the flow dividing branch plate (304), a rotating shaft (306) is rotatably installed at the middle of the bottom end of the rotating drum (302), and a propeller blade (307) is installed on the outer side of the rotating shaft (306) at a position inside the rotating drum (302); A motor (308) is installed at the bottom of the processing box (100) at a position corresponding to the rotating shaft (306), a main gear (309) is installed at the end of the output shaft of the motor (308), and the top of the main gear (309) is connected to the bottom of the rotating shaft (306), an arc-shaped opening (310) is symmetrically opened at the bottom of the outer curved surface of the rotating cylinder (302), a driving gear disc (311) is installed at the bottom edge of the rotating cylinder (302), and the bottom of the unloading chamber (301) corresponds to A steering gear disc (312) is rotatably mounted at the position of the driving gear disc (311), a sub-gear (313) is mounted at the bottom end of the steering gear disc (312), a gear belt (314) is sleeved on the outer side of the sub-gear (313), a plurality of cross bars (315) are evenly mounted at equal distances on one side of the outer curved surface of the rotating cylinder (302), a mounting frame (316) is mounted on the other side of the outer curved surface of the rotating cylinder (302), and a fishbone plate (317) is rotatably mounted inside the mounting frame (316); A transmission box (109) is installed at a position corresponding to the gear belt (314) on the side end surface of the processing box (100); a rotating rod (318) is rotatably installed inside the transmission box (109); a synchronous gear (319) is installed at the bottom end of the rotating rod (318); a connecting gear (320) is installed at the top end of the rotating rod (318); a diverter guide seat (321) is installed at a position corresponding to the connecting gear (320) inside the batching chamber (201); an inner partition plate (322) is rotatably installed inside the diverter guide seat (321); an outer gear ring (323) is installed on the outer curved surface of the inner partition plate (322).

8. A method for preparing recycled concrete according to claim 7, characterized in that: The main gear (309), the secondary gear (313) and the synchronous gear (319) are all meshed with the gear belt (314) through gear teeth, the driving gear plate (311) is meshed with the steering gear plate (312) through gear teeth, and the connecting gear (320) is meshed with the outer gear ring (323) through gear teeth.

9. A method for preparing recycled concrete according to claim 7, characterized in that: The top surfaces of the centrifugal guide seat (303) and the convex plate (305) are both conical surfaces, and the top surface of the convex plate (305) is provided with a plurality of diversion grooves (3051) at equal angles along the circumferential direction. The height of the diversion branch plate (304) is greater than the thickness of the centrifugal guide seat (303), and the top surface of the diversion guide seat (321) is in contact with the top of the batching chamber (201).

10. A method for preparing recycled concrete according to claim 7, characterized in that: The bottom end of the arc-shaped opening (310) is flush with the bottom end of the material discharge chamber (301), and the arc-shaped opening (310) and the discharge hopper (101) are at the same level. A partition plate (108) is slidably embedded at a position close to one side of the processing box (100) at the top of the discharge hopper (101).

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