CN112876145A

CN112876145A - Preparation method of recycled concrete doped with waste concrete blocks

Info

Publication number: CN112876145A
Application number: CN202110107614.XA
Authority: CN
Inventors: 宋春华; 路书芬
Original assignee: Individual
Current assignee: Juxian Jinli Environmental Protection Building Materials Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-01
Anticipated expiration: 2041-01-27
Also published as: CN112876145B

Abstract

The invention relates to a preparation method of recycled concrete doped with waste concrete blocks, which adopts a waste concrete block treatment device, comprising a bottom rack, a vertical rack, a crushing mechanism, a screening mechanism, a working rack and a retreating mechanism, and can solve the following problems: a, in the recycling and reprocessing process of the traditional waste concrete, as the structures such as reinforcing steel bars and wood possibly exist in the waste concrete, the reinforcing steel bars and the wood need to be subjected to primary screening treatment in the crushing process, so that the crushing effect of the waste concrete is prevented from being influenced by the reinforcing steel bars and the wood, the graded crushing is realized, and the crushing effect is better; b traditional abandonment concrete is in the recovery retreatment in-process, because specifications such as concrete hardness, intensity are different, so material specification such as the inside stone of concrete is not of uniform size, when needing to carry out the breakage to the stone of different specifications and cement mortar mixture, frequently changes breaker, and the process is comparatively complicated.

Description

Preparation method of recycled concrete doped with waste concrete blocks

Technical Field

The invention relates to the field of concrete preparation, in particular to a preparation method of recycled concrete doped with waste concrete blocks.

Background

Ordinary concrete is an artificial building material which is formed by taking cement, water, sand, a binder and the like as raw materials, mixing the raw materials according to a proper proportion, uniformly mixing, densely forming, curing and hardening, wherein stones and sands required by the concrete in a processing process need to be obtained from the natural world, but in order to save natural resources and protect the environment, the exploitation of the sand and stone raw materials is reduced as much as possible from the long-term sustainable development perspective, the produced waste concrete can be recycled, the land occupied by the produced waste concrete due to large occupied space can be occupied by direct stacking, if the waste concrete is directly buried, the waste of resources can be caused, so that the waste concrete can be recycled for the second time, and the recycled aggregate is mixed with the raw materials such as the cement, the binder and the like by stirring again. New concrete can be obtained.

At present, the following problems exist in the process of manufacturing recycled concrete by utilizing waste concrete blocks: a traditional waste concrete is in retrieving the reprocessing process, because inside reinforcing bar that probably exists of waste concrete, structures such as timber, the event needs to carry out primary screening processing to reinforcing bar, timber etc. at crushing in-process, avoid reinforcing bar, influence waste concrete's crushing effect such as timber, b traditional waste concrete is in retrieving the reprocessing process, because concrete hardness, specification such as intensity are different, material specification such as the inside stone of event concrete is not of uniform size, when needing to carry out the breakage to the stone and the cement mortar mixture of different specifications, frequently change breaker, and the cost is higher, and the technological process is comparatively complicated.

Disclosure of Invention

Technical problem to be solved

The invention provides a preparation method of recycled concrete doped with waste concrete blocks, which can solve the following problems in the process of preparing the recycled concrete by using the waste concrete blocks: a traditional waste concrete is in the recovery reprocessing process, because inside reinforcing bar, timber isotructure probably exists of waste concrete, so need carry out primary screening processing to reinforcing bar, timber etc. at crushing in-process, avoid reinforcing bar, timber etc. influence waste concrete's crushing effect, realize hierarchical crushing, it is better to make crushing effect, b traditional waste concrete is in the recovery reprocessing process, because specifications such as concrete hardness, intensity are different, so material specification such as the inside stone of concrete are not of uniform size, when needing to carry out the breakage to the stone and cement mortar mixture of different specifications, frequently change breaker, and the cost is higher, and the process is comparatively complicated.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of recycled concrete doped with waste concrete blocks adopts a waste concrete block treatment device, the waste concrete block processing device comprises a bottom rack, a vertical rack, a crushing mechanism, a screening mechanism, a working rack and a retreatment mechanism, a vertical frame is arranged on the front side of the upper end face of the bottom frame, a working frame is arranged on the rear side wall of the vertical frame, a crushing mechanism and a screening mechanism are sequentially arranged on the side wall of the vertical frame above the working frame from top to bottom, a discharge hole is formed in the working frame, a retreating mechanism is arranged between the working frame and the upper end face of the bottom frame, one end of the retreating mechanism is arranged on the lower end face of the working frame, and the upper end surface of the retreating mechanism is positioned right below the discharge port, and the other end of the retreating mechanism is arranged on the upper end surface of the bottom rack.

Broken mechanism include broken frame, broken motor, crushing roller and running gear, wherein broken frame install on vertical frame lateral wall, the crushing roller is installed through the bearing to the inside bilateral symmetry of broken frame, broken motor passes through the motor cabinet to be installed on broken frame inner wall, broken motor output shaft passes through ring flange and left crushing roller fixed connection, installs running gear through the parallel key on the crushing roller, rotates through the gear engagement mode between the crushing roller and connects.

The screening mechanism comprises a limiting plate, a moving plate, a collecting frame, a screening branch chain, a reset spring, a moving block, an adjusting spring rod, a rotating motor and a rotating cam, wherein the limiting plate is of an I-shaped structure, the limiting plate is installed on the rear side wall of the vertical rack, the lower end of the limiting plate is located on the upper end face of the working rack, two groups of moving plates are arranged on the upper end face of the working rack on the left side and the right side of the discharge port in a sliding mode, the moving plates are symmetrically provided with outlets in the vertical direction, the collecting frame is installed on the outer wall of the moving plates on the lower end of the outlets, a first sliding groove is formed in the limiting plate, the moving block is connected in the first sliding groove in a sliding mode, the adjusting spring rod is arranged in the first sliding groove, one end of the adjusting, screening frame one end is installed on the movable plate inner wall through the hinge, and the screening frame other end passes through the hinge mount on the movable block, and reset spring sets up between movable plate and work frame, and reset spring one end is installed at work frame up end, and the reset spring other end is installed on the movable plate outer wall, rotates the motor and passes through the motor cabinet and install at work frame up end, rotates motor output shaft up end and installs the rotation cam, and rotates the cam and lean on the movable plate.

Adopt above-mentioned abandonment concrete piece processing apparatus to the abandonment concrete piece processing process, including following step:

step one, crushing materials: throwing the waste concrete blocks into a waste concrete block treatment device, and crushing the waste concrete blocks;

step two, raw material preparation: preparing raw materials such as cement, sand, an adhesive and the like according to a proper raw material ratio, and preparing the raw material ratio;

step three, stirring raw materials: mixing the cement, the sand, the adhesive and other raw materials subjected to the proportioning treatment in the second step with water, and placing the mixture in a stirring container for stirring treatment;

step four, raw material forming: the mixed and stirred raw materials are subjected to dense forming and curing hardening to form the required concrete.

Preferably, the reprocessing mechanism include crushing barrel, smash roller, crushing board, smash the branch chain, rotating electrical machines, workstation and collection frame, wherein crushing barrel install terminal surface under the frame of work, and crushing barrel is located the discharge gate under, the workstation is installed under the bottom frame is located crushing barrel, the rotating electrical machines is installed through the motor cabinet to the workstation up end, the crushing roller is installed to rotating electrical machines output shaft up end, the inside cavity of having seted up of crushing roller, crushing roller is inside evenly to have seted up No. two spouts of multiunit along its axis direction circumference, No. two spout one end link up with the cavity is inside mutually, No. two spout other ends link up with outside mutually, smash the branch chain and install inside the cavity, the crushing board is connected with crushing branch chain, the side that bottom frame up end is located the workstation is installed and is collected the frame.

Preferably, the screening branch chain include actuating cylinder, regulating plate, the screening is even put up and screening spring beam, wherein the screening even put up inside right-hand member face and seted up the recess No. one, the screening is even the inside left end face of putting up and has evenly seted up the recess No. two of multiunit after going to, actuating cylinder passes through the cylinder block and installs inside the recess No. one, the regulating plate passes through the ring flange and installs in the actuating cylinder drive shaft, the symmetry slides around inside No. two recesses and is provided with the screening even frame, screening even frame one end sets up inside the recess No. one, the screening is even the frame other end and slides and set up inside No. two recesses, and the screening is even the frame is located the inside one end of recess and supports and lean on the regulating plate, the screening spring beam sets up inside No. two recesses, screening spring beam one end is installed on the screening.

Preferably, smash the branch chain include accommodate motor, dancer rools, remove the spring lever and remove even board, wherein accommodate motor pass through the motor cabinet and install terminal surface under the cavity, the dancer rools is installed at accommodate motor output shaft up end, wherein the dancer rools evenly is provided with convex arch along its axis direction circumference, remove even board slip and set up inside No. two spouts, remove even board one end fixed mounting has the board of smashing, remove even board other end and lean on the dancer rools, remove spring lever one end and install on removing even board, the removal spring lever other end is installed on cavity inner wall.

Preferably, the upper end surface of the crushing roller is provided with a conical protruding structure.

Preferably, regulating plate lower extreme face be provided with trapezoidal arch, and trapezoidal bellied number is the same with the number of No. two recesses, the screening frame is located the one end of a recess and supports and lean on trapezoidal bellied inclined plane.

Preferably, No. three recesses have been seted up to the one end of crushing board and crushing barrel contact, and the pressure roller is driven up through bearing installation to No. three recess insides, and the one end of crushing board and crushing barrel contact is provided with the brush hair.

(III) advantageous effects

1. The invention provides a preparation method of recycled concrete doped with waste concrete blocks, which can solve the following problems in the process of preparing the recycled concrete by using the waste concrete blocks: a traditional waste concrete is in the recovery reprocessing process, because inside reinforcing bar, timber isotructure probably exists of waste concrete, so need carry out primary screening processing to reinforcing bar, timber etc. at crushing in-process, avoid reinforcing bar, timber etc. influence waste concrete's crushing effect, realize hierarchical crushing, it is better to make crushing effect, b traditional waste concrete is in the recovery reprocessing process, because specifications such as concrete hardness, intensity are different, so material specification such as the inside stone of concrete are not of uniform size, when needing to carry out the breakage to the stone and cement mortar mixture of different specifications, frequently change breaker, and the cost is higher, and the process is comparatively complicated.

2. In the screening mechanism designed by the invention, the rotating motor is started to drive the rotating cam to rotate, the moving plate is driven to reciprocate left and right in the rotating process of the rotating cam, the screening frame is driven to reciprocate up and down on the limiting plate through the mutual matching of the moving block and the adjusting spring rod in the left and right reciprocating movement process of the moving plate, the screening branch chain is used for screening the waste concrete crushed by the crushing mechanism in the up and down reciprocating movement process of the screening frame, the aggregates such as reinforcing steel bars, wood and the like in the waste concrete are screened, wherein the regulating plate in the screening branch chain drives through adjust cylinder and can adjust screening even interval between the frame through mutually supporting with the screening spring beam, so can sieve different length or width reinforcing bar or timber, be provided with two sets of screening framves from top to bottom and make the screening more thorough, the screening effect is better.

3. In the designed retreatment mechanism, the crushing roller is matched with the crushing barrel through the crushing plate to crush the screened concrete for the second time, the adjusting roller in the crushing branch chain is driven to rotate through the adjusting motor, the movable connecting plate is driven to move in the rotating process of the adjusting roller, the crushing plate is driven to move to a working position in the moving process of the movable connecting plate, the rotating motor is started to drive the crushing plate to crush waste concrete blocks with different specifications through the crushing roller, the applicability is wider, the complexity of frequently replacing a crushing device is avoided, and the crushing efficiency is higher.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic view of the present invention showing the mounting structure of the sieving frame and the sieving branch chain;

FIG. 6 is a schematic view of the internal mounting structure of the reprocessing mechanism of the present invention;

FIG. 7 is a transverse cross-sectional view of the reprocessing mechanism of the present invention;

FIG. 8 is a perspective view of an adjustment plate according to the present invention;

fig. 9 is a schematic perspective view of the limiting plate of the invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 9, a method for preparing recycled concrete doped with waste concrete blocks, which employs a waste concrete block treatment apparatus comprising a bottom frame 1, a vertical frame 2, a crushing mechanism 3, a sieving mechanism 4, a working frame 5 and a re-treatment mechanism 6, wherein the vertical frame 2 is mounted on the front side of the upper end face of the bottom frame 1, the working frame 5 is mounted on the rear side wall of the vertical frame 2, the crushing mechanism 3 and the sieving mechanism 4 are sequentially mounted on the side wall of the vertical frame 2 above the working frame 5 from top to bottom, a discharge port is opened on the working frame 5, the re-treatment mechanism 6 is mounted between the working frame 5 and the upper end face of the bottom frame 1, one end of the re-treatment mechanism 6 is mounted on the lower end face of the working frame 5, and the upper end face of the re-treatment mechanism 6 is located right below the discharge port, the other end of the reprocessing mechanism 6 is mounted on the upper end face of the bottom frame 1.

The crushing mechanism 3 comprises a crushing frame 31, a crushing motor 32, a crushing roller 33 and a rotating gear 34, wherein the crushing frame 31 is installed on the side wall of the vertical rack 2, the crushing rollers 33 are installed in the crushing frame 31 in a bilateral symmetry mode through bearings, the crushing motor 32 is installed on the inner wall of the crushing frame 31 through a motor base, an output shaft of the crushing motor 32 is fixedly connected with the left crushing roller 33 through a flange, the rotating gear 34 is installed on the crushing roller 33 through a flat key, the crushing rollers 33 are rotatably connected in a gear meshing mode, in the specific work process, the crushing motor 32 is started to drive the left crushing roller 33 to rotate, the right crushing roller 33 is driven to rotate through the rotating gear 34 in the rotating process of the left crushing roller 33, at the moment, waste concrete blocks are placed in the middle of the crushing rollers 33 through the existing equipment, and at the moment, the waste concrete blocks can be, the use of the rotating gear 34 can lead the crushing rollers 33 at the left side and the right side to obtain different steering, and the crushing rollers 33 crush alternately, thus leading the crushing effect of the waste concrete blocks to be better.

The screening mechanism 4 comprises a limiting plate 41, a moving plate 42, a collecting frame 43, a screening frame 44, a screening branched chain 45, a return spring 46, a moving block 47, an adjusting spring rod 48, a rotating motor 49 and a rotating cam 410, wherein the limiting plate 41 is in an I-shaped structure, the limiting plate 41 is installed on the rear side wall of the vertical rack 2, the lower end of the limiting plate 41 is located on the upper end face of the working rack 5, two groups of moving plates 42 are arranged on the upper end face of the working rack 5 in a sliding manner and located on the left side and the right side of the discharge port, outlets are symmetrically formed in the upper side and the lower side of the moving plates 42, the collecting frame 43 is installed on the outer wall of the outlet lower end of the moving plate 42, a first sliding groove is formed in the limiting plate 41, the moving block 47 is connected in the first sliding groove in a sliding manner, the adjusting spring rod 48 is arranged, two sets of screening frames 44 are arranged between the limiting plate 41 and the moving plate 42, one end of each screening frame 44 is mounted on the inner wall of the moving plate 42 through a hinge, the other end of each screening frame 44 is mounted on the moving block 47 through a hinge, a return spring 46 is arranged between the moving plate 42 and the working rack 5, one end of the return spring 46 is mounted on the upper end face of the working rack 5, the other end of the return spring 46 is mounted on the outer wall of the moving plate 42, a rotating motor 49 is mounted on the upper end face of the working rack 5 through a motor base, a rotating cam 410 is mounted on the upper end face of an output shaft of the rotating motor 49, the rotating cam 410 is abutted against the moving plate 42, during specific work, the rotating motor 49 is started to drive the rotating cam 410 to rotate, the moving plate 42 is driven to reciprocate during rotation of the rotating cam 410, the screening frames 44, screening frame 44 is reciprocal up and down the in-process and is sieved the processing through screening branch chain 45 to the concrete piece of elementary breakage, wherein set up two sets of screening frames 44 from top to bottom and can sieve the processing through adjusting screening branch chain 45 to the reinforcing bar of different specifications, timber etc. for the screening effect is better, the concrete piece after the screening drops through the discharge gate through screening branch chain 45 in the further processing mechanism 6, carry out further crushing processing, the reinforcing bar, timber etc. drops through the export and further collects in the frame 43, wherein reset spring 46 and adjusting spring pole 48 all play the reset action in the course of the work.

The screening branched chain 45 comprises an adjusting cylinder 451, an adjusting plate 452, a screening connecting frame 453 and a screening spring rod 454, wherein a first groove is formed in the right end face of the inside of the screening connecting frame 453, a plurality of groups of second grooves are uniformly formed in the left end face of the inside of the screening connecting frame 453 from front to back, the adjusting cylinder 451 is installed in the first groove through a cylinder seat, the adjusting plate 452 is installed on a driving shaft of the adjusting cylinder 451 through a flange plate, the screening connecting frames 453 are symmetrically arranged in the second groove in a front-back sliding manner, one end of the screening connecting frame 453 is arranged in the first groove, the other end of the screening connecting frame 453 is arranged in the second groove in a sliding manner, one end of the screening connecting frame 453, in addition, the screening connecting frame 453 is abutted against the adjusting plate 452, the screening spring rod 454 is arranged in the second groove, one end of the screening spring rod 454 is installed on the screening connecting frame, during specific work, according to the specification size between the broken reinforcing bar, timber and the concrete piece, adjust cylinder 451 starts to drive adjusting plate 452 and moves, and adjusting plate 452 moves the in-process and drives screening even frame 453 and carry out the back-and-forth movement, and screening even frame back-and-forth movement in-process can adjust the spacing distance between the screening even frame 453, can carry out screening processing between the reinforcing bar of different specifications, timber and the concrete piece.

Regulating plate 452 terminal surface be provided with trapezoidal arch, and the same with No. two recesses of trapezoidal bellied number, the one end that screening even puts up 453 is located a recess leans on trapezoidal bellied inclined plane, trapezoidal bellied use can be to screening even frame 453 carry out synchronous roll adjustment and handle.

The reprocessing mechanism 6 comprises a crushing barrel 61, a crushing roller 62, a crushing plate 63, a crushing branch chain 64, a rotating motor 65, a workbench 66 and a collecting frame 67, wherein the crushing barrel 61 is arranged on the lower end face of the working frame 5, the crushing barrel 61 is positioned under the discharge port, the workbench 66 is arranged under the crushing barrel 61 of the bottom frame 1, the rotating motor 65 is arranged on the upper end face of the workbench 66 through a motor base, the crushing roller 62 is arranged on the upper end face of an output shaft of the rotating motor 65, a cavity is arranged in the crushing roller 62, a plurality of groups of second sliding grooves are uniformly arranged in the crushing roller 62 along the circumferential direction of the axis of the crushing roller, one ends of the second sliding grooves are communicated with the interior of the cavity, the other ends of the second sliding grooves are communicated with the exterior, the crushing branch chain 64 is arranged in the cavity, the crushing plate 63 is connected with the crushing branch chain 64, the collecting frame 67 is arranged on the, during specific work, according to concrete specification size, smash branch chain 64 and start to drive crushing board 63 and remove operating position, rotating electrical machines 65 starts to drive crushing roller 62 and rotates, crushing roller 62 rotates in-process and drives crushing board 63 and carry out the regrinding to the abandonment concrete piece that drops, make the stone and the cement mortar mixture in the abandonment concrete piece separately, broken more thoroughly, the stone and the cement mortar mixture after the regrinding drop into collecting frame 67, collect reprocessing through artifical or existing equipment, the use of smashing branch chain 64 makes crushing board 63 can carry out the secondary crushing to the concrete piece of different specifications, make crushing effect better.

The upper end face of the crushing roller 62 is provided with a conical protruding structure, so that the dropped concrete blocks cannot be accumulated on the upper end face of the crushing roller 62, and the reprocessing efficiency of the concrete blocks is influenced.

No. three recesses have been seted up to the one end that crushing plate 63 and crushing barrel 61 contacted, and No. three recess is inside to be installed through the bearing and to catch up with the compression roller, and the one end that crushing plate 63 and crushing barrel 61 contacted is provided with the brush hair, and the use that catches up with the compression roller can carry out the regrinding to the concrete piece through mutually supporting with crushing barrel 61 for stone and cement mortar separate, and the use of brush hair can be cleaned the processing to crushing barrel 61 wall and avoid the concrete piece to adhere to on crushing barrel 61 section of thick bamboo wall.

The crushing branched chain 64 comprises an adjusting motor 641, an adjusting roller 642, a movable spring rod 643 and a movable connecting plate 644, wherein the adjusting motor 641 is installed on the lower end face of the cavity through a motor base, the adjusting roller 642 is installed on the upper end face of an output shaft of the adjusting motor 641, circular arc-shaped protrusions are uniformly arranged on the adjusting roller 642 along the circumferential direction of the axis of the adjusting roller, the movable connecting plate 644 is arranged inside a second sliding groove in a sliding mode, a crushing plate 63 is fixedly installed at one end of the movable connecting plate 644, the other end of the movable connecting plate 644 abuts against the adjusting roller 642, one end of the movable spring rod 643 is installed on the movable connecting plate 644, the other end of the movable spring rod 643 is installed on the inner wall of the cavity, during specific work, the adjusting motor 641 rotates to drive the adjusting roller 642 to rotate, the movable connecting plate 644 is driven to move during rotation of the adjusting roller 642, the crushing plate 63 is driven to move to a working position during movement of the movable connecting plate 644, and the rotating And (3) crushing treatment, wherein the movable spring rod 643 plays a resetting role in the working process, and the circular arc-shaped bulge can synchronously adjust the movable connecting plate 644 in the rotating process of the adjusting roller 642, so that the movable connecting plate 644 drives the crushing plate 63 to move to the working position.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing recycled concrete doped with waste concrete blocks adopts a waste concrete block treatment device, which comprises a bottom frame (1), a vertical frame (2), a crushing mechanism (3), a screening mechanism (4), a working frame (5) and a retreating mechanism (6), and is characterized in that: the front side of the upper end face of the bottom rack (1) is provided with a vertical rack (2), the rear side wall of the vertical rack (2) is provided with a working rack (5), the side wall of the vertical rack (2) is positioned above the working rack (5) and is sequentially provided with a crushing mechanism (3) and a screening mechanism (4) from top to bottom, the working rack (5) is provided with a discharge hole, a retreating mechanism (6) is arranged between the working rack (5) and the upper end face of the bottom rack (1), one end of the retreating mechanism (6) is arranged on the lower end face of the working rack (5), the upper end face of the retreating mechanism (6) is positioned under the discharge hole, and the other end of the retreating mechanism (6) is arranged on the upper end face; wherein:

the crushing mechanism (3) comprises a crushing frame (31), a crushing motor (32), crushing rollers (33) and rotating gears (34), wherein the crushing frame (31) is installed on the side wall of the vertical rack (2), the crushing rollers (33) are installed inside the crushing frame (31) in bilateral symmetry through bearings, the crushing motor (32) is installed on the inner wall of the crushing frame (31) through a motor base, an output shaft of the crushing motor (32) is fixedly connected with the crushing roller (33) on the left side through a flange plate, the rotating gears (34) are installed on the crushing rollers (33) through flat keys, and the crushing rollers (33) are rotatably connected in a gear meshing mode;

the screening mechanism (4) comprises a limiting plate (41), a moving plate (42), a collecting frame (43), a screening frame (44), a screening branched chain (45), a reset spring (46), a moving block (47), an adjusting spring rod (48), a rotating motor (49) and a rotating cam (410), wherein the limiting plate (41) is of an I-shaped structure, the limiting plate (41) is installed on the rear side wall of the vertical rack (2), the lower end of the limiting plate (41) is located on the upper end face of the working rack (5), two groups of moving plates (42) are arranged on the left side and the right side of the discharge port of the upper end face of the working rack (5) in a sliding mode, outlets are symmetrically formed in the upper and lower sides of the moving plates (42), the collecting frame (43) is installed on the outer wall of the moving plates (42) located at the lower ends of the outlets, a first sliding groove is formed, an adjusting spring rod (48) is arranged in a first sliding groove, one end of the adjusting spring rod (48) is arranged on the lower end face of the first sliding groove, the other end of the adjusting spring rod (48) is arranged on the lower end face of a moving block (47), two sets of screening frames (44) are arranged between a limiting plate (41) and the moving plate (42), one end of each screening frame (44) is arranged on the inner wall of the moving plate (42) through a hinge, the other end of each screening frame (44) is arranged on the moving block (47) through a hinge, a return spring (46) is arranged between the moving plate (42) and a working rack (5), one end of the return spring (46) is arranged on the upper end face of the working rack (5), the other end of the return spring (46) is arranged on the outer wall of the moving plate (42), a rotating motor (49) is arranged on the upper end face of the working rack (, and the rotating cam (410) abuts against the moving plate (42);

2. The method for preparing recycled concrete doped with waste concrete blocks according to claim 1, wherein the method comprises the following steps: the reprocessing mechanism (6) comprises a crushing barrel (61), a crushing roller (62), a crushing plate (63), a crushing branch chain (64), a rotating motor (65), a workbench (66) and a collecting frame (67), wherein the crushing barrel (61) is installed on the lower end face of a working rack (5), the crushing barrel (61) is located under a discharge port, the bottom rack (1) is located under the crushing barrel (61) and is provided with the workbench (66), the upper end face of the workbench (66) is provided with the rotating motor (65) through a motor base, the upper end face of an output shaft of the rotating motor (65) is provided with the crushing roller (62), a cavity is formed inside the crushing roller (62), a plurality of groups of second sliding grooves are uniformly formed in the crushing roller (62) along the circumferential direction of the axis of the crushing roller, one end of each second sliding groove is communicated with the inside of the cavity, the other end of each second sliding groove is communicated with the outside, the crushing branch chain, the crushing plate (63) is connected with the crushing branch chain (64), and the collecting frame (67) is arranged on the upper end face of the bottom rack (1) and is positioned on the side edge of the workbench (66).

3. The method for preparing recycled concrete doped with waste concrete blocks according to claim 1, wherein the method comprises the following steps: the screening branched chain (45) comprises an adjusting cylinder (451), an adjusting plate (452), a screening connecting frame (453) and a screening spring rod (454), wherein a first groove is formed in the right end face inside the screening connecting frame (453), a plurality of groups of second grooves are uniformly formed in the left end face inside the screening connecting frame (453) from front to back, the adjusting cylinder (451) is installed inside the first groove through a cylinder seat, the adjusting plate (452) is installed on a driving shaft of the adjusting cylinder (451) through a flange plate, the screening connecting frames (453) are symmetrically arranged in the second groove in a sliding mode front and back, one end of the screening connecting frame (453) is arranged inside the first groove, the other end of the screening connecting frame (453) is arranged inside the second groove in a sliding mode, one end, located inside the first groove, of the screening connecting frame (453) abuts against the adjusting plate (452), and the screening spring rod (454) is arranged inside the second groove, one end of the screening spring rod (454) is installed on the screening connecting frame (453), and the other end of the screening spring rod (454) is installed on the inner wall of the second groove.

4. The method for preparing recycled concrete doped with waste concrete blocks according to claim 2, wherein the method comprises the following steps: the crushing branch chain (64) comprises an adjusting motor (641), an adjusting roller (642), a movable spring rod (643) and a movable connecting plate (644), wherein the adjusting motor (641) is installed on the lower end face of the cavity through a motor base, the adjusting roller (642) is installed on the upper end face of an output shaft of the adjusting motor (641), circular arc-shaped protrusions are uniformly arranged on the adjusting roller (642) along the circumferential direction of the axis of the adjusting roller, the movable connecting plate (644) is arranged inside the second sliding groove in a sliding mode, a crushing plate (63) is fixedly installed at one end of the movable connecting plate (644), the other end of the movable connecting plate (644) abuts against the adjusting roller (642), one end of the movable spring rod (643) is installed on the movable connecting plate (644), and the other end of the movable spring rod (643) is installed on.

5. The method for preparing recycled concrete doped with waste concrete blocks according to claim 2, wherein the method comprises the following steps: the upper end surface of the crushing roller (62) is provided with a conical protruding structure.

6. The method for preparing recycled concrete doped with waste concrete blocks according to claim 3, wherein the method comprises the following steps: the lower end face of the adjusting plate (452) is provided with trapezoidal protrusions, the number of the trapezoidal protrusions is the same as that of the second grooves, and one end, located in the first groove, of the screening connecting frame (453) abuts against the inclined face of the trapezoidal protrusions.

7. The method for preparing recycled concrete doped with waste concrete blocks according to claim 2, wherein the method comprises the following steps: no. three recesses have been seted up to crushing plate (63) and the one end of smashing a section of thick bamboo (61) contact, and the pressure roller is driven up through bearing installation to No. three recess insidely, and the one end of crushing plate (63) and smashing a section of thick bamboo (61) contact is provided with the brush hair.