CN114985048A

CN114985048A - Device and process for preparing concrete adding aggregate by using construction waste

Info

Publication number: CN114985048A
Application number: CN202210625173.7A
Authority: CN
Inventors: 尚若影
Original assignee: Individual
Current assignee: Dacheng Xinmeishang Concrete Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-02
Anticipated expiration: 2042-06-02
Also published as: CN114985048B

Abstract

The invention discloses a device and a process for preparing concrete aggregate by using construction waste, which comprises a crushing box, wherein the top of the crushing box is provided with a feeding hopper, the left end of the crushing box is provided with a left containing box, the right end of the crushing box is provided with a right containing box, and the crushing box and the inner part of the crushing box are connected with a screen in a sliding way; in-process that broken screening was carried out to the aggregate to broken case, can be through the mutually supporting of clear stifled mechanism inner structure, can clear up the sieve mesh when making the screen cloth move left containing box, can avoid stopping broken case power through the above-mentioned operation, just can carry out the step of clearing up, the work efficiency of broken case has been increased, under the mutually supporting of filter mechanism inner structure, can guarantee when the filter screen normal use, can make things convenient for the staff quick change the filter screen, avoid the staff to demolish the step of filter, the practicality of interpolation device has been increased.

Description

Device and process for preparing concrete adding aggregate by using construction waste

Technical Field

The invention relates to the technical field of construction waste treatment, in particular to a device and a process for preparing concrete additive aggregate by using construction waste.

Background

In order to reduce the waste of construction waste and the pollution to the environment, a recycling station can carry out recycled concrete work on the construction waste, the concrete needs to be firstly made into coarse aggregate by a jaw crusher in the preparation process, then the coarse aggregate is cleaned and screened, finally the coarse aggregate is broken into fine aggregate by an adding device and then added into a mixing device, and in the process of carrying out secondary crushing on the coarse aggregate by the adding device, the broken fine aggregate needs to be screened and filtered by a screen mesh arranged inside.

In the process of implementing the application, the inventor finds that at least the following problems exist in the technology: in order to avoid the blockage of the screen, the treatment is generally carried out by a high-pressure water washing or cleaning mode, and the two modes 1 can be carried out after the adding device stops working, so that the crushing efficiency of the adding device is reduced; 2. when using high-pressure water washing, in order to avoid the cyclic utilization of water resource, generally will use the filter plate to filter, because the filter plate is dismantled more troublesome that changes, can increase staff's operating procedure like this.

Therefore, the device and the process for preparing the concrete additive aggregate by using the construction waste solve the problems.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a device for preparing concrete by utilizing construction waste and adding aggregate comprises a crushing box, wherein the top of the crushing box is provided with a feeding hopper, the left end of the crushing box is provided with a left containing box, the right end of the crushing box is provided with a right containing box, the crushing box and the inner part are connected with a screen in a sliding way, two ends of the screen penetrate through two ends of the crushing box and then extend to the inner parts of the left containing box and the right containing box, a second spring frame is arranged at the right end of the screen and inside the right containing box, the front surface and the rear surface of the screen are both provided with a blockage removing mechanism, two filtering mechanisms are respectively arranged at the same position in the left containing box and the right containing box, a plurality of high-pressure spray heads are installed above the inner walls of the left containing box and the right containing box and are connected through water pipes, and the water pipes are connected with external water pipes.

The blockage removing mechanism comprises a first blockage removing block, a second blockage removing block, a power rod, a sliding seat, a reverse stopping seat, a square block, a push plate and a rubber wheel, wherein the first blockage removing block is installed above the inner part of the left containing box through hydraulic lifting equipment, the second blockage removing block is installed above the inner part of the right containing box through hydraulic lifting equipment, the power rod is installed on the front surface and the rear surface of the first blockage removing block, an upper vertical plate is installed above the inner part of the power rod, an inclined plate is installed below the upper vertical plate, a lower vertical plate is installed below the inclined plate, screen grooves are formed in the front surface and the rear surface of the screen mesh, the square block is installed inside the screen grooves at certain intervals, the sliding seat and the reverse stopping seat are installed in front of and behind the inner wall of the left containing box respectively, and the sliding seat is connected with the left containing box through an adjusting component, the sliding seat with the top of the anti-reverse seat is connected with a push plate through a connecting shaft in a rotating mode, and a rubber wheel is installed at one end, close to the power rod, of the sliding seat.

Preferably, filtering mechanism includes subframe, vice contrary axle, filter screen, bearing board, compresses tightly subassembly, main contrary axle and main frame of ending, the back surface mounting of left side containing box has subframe, subframe's inside rotation is connected with vice contrary axle of ending, the front surface mounting of left side containing box has the main frame, the inside rotation of main frame is connected with main contrary axle of ending, vice contrary axle of ending with the winding has the filter screen between the main contrary axle, the filter screen runs through the inside of left side containing box, left side containing box is inside and is located the bearing board is installed to the below of filter screen, left side containing box is inside and is located the top of filter screen is installed and is compressed tightly the subassembly.

Preferably, the compressing assembly comprises a hanging bracket and a connecting rod, the hanging bracket is installed above and behind the inner wall of the left containing box, the connecting rod is installed inside the hanging bracket, the top of the connecting rod is located a compression spring frame is installed above the hanging bracket, and a roller is rotatably connected to the bottom of the connecting rod.

Preferably, the right-hand member of main frame just is located the lateral wall of main contrary axle is installed and is changeed board and fluted disc, it all is located to change board and fluted disc the lateral wall of main contrary axle is contrary, the tooth is installed to the lateral wall of fluted disc, the locating plate is down installed to the bottom of main frame, the right-hand member threaded connection of locating plate has the screw rod down, the tooth cover is installed at the top of screw rod.

Preferably, the adjusting part includes bar groove, traveller and first spring frame, the inner wall the place ahead and the inner wall of left side containing box and with the bar groove has been seted up to the position that the screen cloth is parallel, the internally mounted in bar groove has the traveller, first spring frame and sliding seat are installed to the lateral wall of traveller, the sliding seat with traveller sliding connection.

Preferably, an upper electromagnet is installed at one end of the bottom of the push plate, a lower electromagnet is installed at the position, corresponding to the upper electromagnet, of the sliding seat and the anti-reversion seat, and a baffle is further installed at one end, far away from the lower electromagnet, of the sliding seat and the anti-reversion seat.

Preferably, a discharge port is formed in the upper portion of the front surface of the crushing box, and an extension plate is mounted in front of the discharge port.

Compared with the prior art, the invention has the following beneficial effects: 1. in-process that carries out crushing screening to the aggregate at broken case can be through the mutually supporting of clear stifled mechanism inner structure, can clear up the sieve mesh when making the screen cloth move toward left containing box, can avoid stopping broken case power through the above-mentioned operation, just can carry out the step of clearing up, has increased the work efficiency of broken case.

2. Under the mutually supporting of filter mechanism inner structure, when can guaranteeing that the filter screen normal use, can make things convenient for the staff quick change the filter screen, avoid the staff to demolish the step of filter, increased the practicality of adding the device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the left storage box and the rear storage box of FIG. 1 with front walls removed according to the present invention;

FIG. 3 is a schematic view of a connection structure of the screen and the blockage removing mechanism in FIG. 2;

FIG. 4 is a left side view of the screen and block clearing mechanism of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of a connection structure of the push plate and the sliding seat in FIG. 3 according to the present invention;

FIG. 6 is a schematic view of a connection structure between the sliding seat and the left storage box in FIG. 1 according to the present invention;

FIG. 7 is an enlarged view of A of FIG. 6 according to the present invention;

FIG. 8 is a front longitudinal cross-sectional view of the feeding device of FIG. 1 according to the present invention;

FIG. 9 is a side view of the left container of FIG. 1 illustrating the structure of the invention;

FIG. 10 is a right side view of the main frame of FIG. 1.

In the figure: 1. a crushing box; 2. feeding into a hopper; 3. a left storage box; 4. a right storage box; 5. screening a screen; 6. a blockage clearing mechanism; 7. a high pressure spray head; 8. a filtering mechanism; 11. a discharge port; 12. an extension plate; 31. an adjustment assembly; 311. a strip-shaped groove; 312. a traveler; 313. a first spring holder; 51. a screen slot; 52. a second spring frame; 61. a first block removal block; 62. a second blockage removing block; 63. a power rod; 631. an upper vertical plate; 632. a sloping plate; 633. a lower vertical plate; 64. a sliding seat; 641. a baffle plate; 642. a lower electromagnet; 643. electrifying an electromagnet; 65. a reverse stopping seat; 66. a square block; 67. pushing a plate; 671. a connecting shaft; 68. a rubber wheel; 71. a water delivery pipe; 81. a sub-frame; 82. an auxiliary non-return shaft; 83. filtering with a screen; 84. a support plate; 85. a compression assembly; 851. a hanger; 852. a connecting rod; 853. a roller; 86. a main non-return shaft; 87. a main frame; 871. rotating the plate; 872. a fluted disc; 873. teeth; 874. a gear sleeve; 875. a screw; 876. and a lower positioning plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figures 1 and 2, the device for preparing concrete aggregate by using construction waste comprises a crushing box 1, a feeding hopper 2 is installed at the top of the crushing box 1, a left containing box 3 is installed at the left end of the crushing box 1, a right containing box 4 is installed at the right end of the crushing box 1, a screen 5 is connected to the crushing box 1 and the inside in a sliding manner, two ends of the screen 5 penetrate through two ends of the crushing box 1 and then extend to the inside of the left containing box 3 and the right containing box 4, a spring frame II 52 is installed at the right end of the screen 5 and positioned inside the right containing box 4, a blockage removing mechanism 6 is installed on the front surface and the rear surface of the screen 5, two filtering mechanisms 8 are installed at the same position inside the left containing box 3 and the right containing box 4, a plurality of high-pressure spray heads 7 are installed above the inner walls of the left containing box 3 and the right containing box 4, and the plurality of high-pressure spray heads 7 are connected through a water conveying pipe 71, the water delivery pipe 71 is connected with an external water pipe.

During specific work, pour coarse aggregate into crushing case 1 inside through going into hopper 2, then fall into on the screen cloth 5 after broken through the crushing roller, because screen cloth 5 is connected with external vibration motor, the vibration power through external vibration motor makes screen cloth 5 sieve the fine aggregate after the breakage, then can clear up the sieve mesh when driving screen cloth 5 toward left containing box 3 and remove through clear stifled mechanism 6, and spray through high pressure nozzle 7 can carry out the secondary to the aggregate piece on screen cloth 5 surface and clear up, then follow the inflow raceway 71 department after filtering mechanism 8 handles again after clearing up, after the inside screen cloth 5 of right containing box 4 all removed crushing case 1, No. two spring bracket 52 of rethread made screen cloth 5 move back.

As shown in fig. 2, 3, 4, 5 and 6, the blockage removing mechanism 6 includes a first blockage removing block 61, a second blockage removing block 62, a power rod 63, a sliding seat 64, a non-return seat 65, a square block 66, a push plate 67 and a rubber wheel 68, the first blockage removing block 61 is installed on the upper portion of the inside of the left storage box 3 through a hydraulic lifting device, the second blockage removing block 62 is installed on the upper portion of the inside of the right storage box 4 through a hydraulic lifting device, the power rod 63 is installed on the front surface and the rear surface of the first blockage removing block 61, an upper vertical plate 631 is installed on the upper portion of the inside of the power rod 63, an inclined plate 632 is installed below the upper vertical plate 631, a lower vertical plate 633 is installed below the inclined plate 632, screen slots 51 are respectively opened on the front surface and the rear surface of the screen 5, the non-return blocks 66 are installed inside the screen slots 51 at a certain interval, the sliding seat 64 and the non-return seat 65 are respectively installed in front of the inner wall and behind the inner wall of the left storage box 3, and the sliding seat 64 is connected with the left containing box 3 through the adjusting component 31, the tops of the sliding seat 64 and the non-return seat 65 are rotatably connected with a push plate 67 through a connecting shaft 671, and one end of the sliding seat 64 close to the power rod 63 is provided with a rubber wheel 68.

In the specific work, when the blockage clearing mechanism 6 needs to work in the screening process, the first blockage clearing block 61 and the second blockage clearing block 62 can be moved downwards through the hydraulic lifting device, the lower vertical plate 633 part of the power rod 63 can be driven to move downwards along the rubber wheel 68 while the first blockage clearing block 61 moves downwards, when the inclined plate 632 part of the power rod 63 contacts the rubber wheel 68, the inclined plate 632 can push the sliding seat 64 connected with the rubber wheel 68 to move left, the pushing plate 67 connected with the upper part can push the square block 66 to move left through the sliding seat 64, the square block 66 further drives the screen 5 to move left, and because the horizontal distance between the top and the bottom of the inclined plate 632 is the same as the distance between the screen holes, when the top of the inclined plate 632 contacts the rubber wheel 68, the first screen hole can be just right moved to the position right below the first blockage clearing block 61, and when the first blockage clearing block 61 drives the upper vertical plate part of the power rod 63 to contact the rubber wheel 631, the rubber wheel 68 stops moving, then the first cleaning block 61 continues to move downwards, the first cleaning block 61 is inserted into the sieve holes of the sieve 5, the blocked part of the sieve 5 can be cleaned through the rubber wheel, after the first row of sieve holes are cleaned, the first cleaning block 61 is moved upwards, the power rod 63 stops restricting the rubber wheel 68 in the process that the first cleaning block 61 moves upwards, then the sliding seat 64 returns to the right under the matching of the adjusting component 31, in the process of returning to the right, the push plate 67 above the sliding seat 64 passes through the bottom of the square block 66, after the push plate 67 passes through the square block 66, the push plate 67 continues to incline under the action of gravity, after the sliding seat 64 returns to the original position, the push plate 67 above the sliding seat 64 is positioned at the other side block 66, then the first cleaning block 61 continues to move downwards and the second row of sieve holes are cleaned, install push pedal 67 above backstop seat 65, through the restriction of backstop seat 65 top push pedal 67, can avoid the screen cloth 5 to turn right when the sliding seat 64 turns right and slide, because first clear jam piece 61 and second clear jam piece 62 move down in step, can be convenient for make second clear jam piece 62 clear up screen cloth 5 right side like this.

As shown in fig. 5, an upper electromagnet 643 is installed at one end of the bottom of the push plate 67, a lower electromagnet 642 is installed at a position corresponding to the upper electromagnet 643 on the sliding seat 64 and the non-return seat 65, and a baffle 641 is also installed at one end of the sliding seat 64 and the non-return seat 65 away from the lower electromagnet 642.

As shown in fig. 6 and 7, the adjusting assembly 31 includes a strip-shaped groove 311, a sliding column 312 and a first spring frame 313, the strip-shaped groove 311 is disposed in front of an inner wall of the left storage box 3, the inner wall is parallel to the screen 5, the sliding column 312 is disposed inside the strip-shaped groove 311, the first spring frame 313 and the sliding seat 64 are disposed on an outer side wall of the sliding column 312, the sliding seat 64 is slidably connected to the sliding column 312, when the power rod 63 drives the sliding seat 64 to move left, the sliding seat 64 can drive the first spring frame 313 to stretch, when the power rod 63 does not provide a left pushing force to the sliding seat 64, the sliding seat 64 can move right under the pulling of the first spring frame 313, and further the sliding seat 64 can drive the pushing plate 67 to move left.

As shown in fig. 8 and 9, the filtering mechanism 8 includes a sub-frame 81, a sub-check shaft 82, a filter screen 83, a support plate 84, a pressing assembly 85, a main check shaft 86, and a main frame 87, the sub-frame 81 is installed on the rear surface of the left storage box 3, the sub-check shaft 82 is rotatably connected to the inside of the sub-frame 81, the main frame 87 is installed on the front surface of the left storage box 3, the main check shaft 86 is rotatably connected to the inside of the main frame 87, the filter screen 83 is wound between the sub-check shaft 82 and the main check shaft 86, the filter screen 83 penetrates through the inside of the left storage box 3, the support plate 84 is installed inside the left storage box 3 and below the filter screen 83, the pressing assembly 85 is installed inside the left storage box 3 and above the filter screen 83, in specific operation, when cleaned wastewater flows onto the surface of the filter screen 83, impurities can be filtered by the filter screen 83, when the filter screen 83 needs to be replaced, the main check shaft 86 inside the main frame 87 can be rotated, the waste filter screen 83 can be wound through the main check shaft 86, and the waste filter screen 83 can drive the new filter screen 83 wound on the outer side wall of the auxiliary check shaft 82 to move onto the supporting plate 84 in the moving process, so that the filter screen 83 can be conveniently replaced by a worker.

As shown in fig. 9, the pressing assembly 85 comprises a hanger 851 and a connecting rod 852, the hanger 851 is installed above the inner wall of the left containing box 3 and at the rear of the inner wall, the connecting rod 852 is installed inside the hanger 851, the top of the connecting rod 852 is located above the hanger 851 and is provided with a compression spring frame, the bottom of the connecting rod 852 is rotatably connected with a roller 853, and during specific work, the connecting rod 852 can drive the roller 853 to move downwards under the pushing of the compression spring frame, and the filter screen 83 can be attached to the bearing plate 84 all the time through the extrusion of the roller 853.

As shown in fig. 10, a rotating plate 871 and a toothed plate 872 are installed at the right end of the main frame 87 and located on the outer side wall of the main check shaft 86, the rotating plate 871 and the toothed plate 872 are both located on the outer side wall of the main check shaft 86, teeth 873 are installed on the outer side wall of the toothed plate 872, a lower positioning plate 876 is installed at the bottom of the main frame 87, a screw 875 is connected to the right end of the lower positioning plate 876 through a screw thread, and a toothed sleeve 874 is installed at the top of the screw 875, in the specific operation, the main check shaft 86 can be rotated by rotating the rotating plate 871, when the main check shaft 86 does not need to be rotated, the screw 875 can drive the toothed sleeve 874 to move upward, the toothed sleeve 874 can be embedded into the teeth 873 on the outer side wall of the toothed plate 872 in the process of moving upward, and the main check shaft 86 can be prevented from rotating by the limit of the toothed sleeve 874.

As shown in fig. 1, a discharge port 11 is formed above the front surface of the crushing box 1, an extension plate 12 is installed in front of the discharge port 11, the extension plate 12 is connected with the crushing box 1 through a hinge, large-particle aggregates retained after screening can be conveniently taken out from the discharge port 11, and when the discharge port 11 is not needed, the extension plate 12 can be sealed on the discharge port 11.

In addition, the invention also provides a processing technology of the device for preparing the concrete aggregate by utilizing the construction waste, which specifically comprises the following steps:

firstly, pouring coarse aggregate into a crushing box 1 from a feeding hopper 2, crushing the coarse aggregate by a crushing roller, dropping the coarse aggregate onto a screen 5, and filtering the coarse aggregate by the screen 5 to enable fine particle aggregate to flow into the bottom of the screen 5.

Secondly, when the screen 5 works, the first cleaning block 61 and the second cleaning block 62 can be moved downwards by the hydraulic lifting device, the power rod 63 can be driven to move downwards while the first cleaning block 61 moves downwards, then the first row of sieve holes of the screen 5 can be moved to the position under the first cleaning block 61 through the matching of the rubber wheel 68, the sliding seat 64 and the push plate 67, the first cleaning block 61 can be continuously moved downwards to clean the first row of sieve holes of the screen 5, after the first row of sieve holes are cleaned, the first cleaning block 61 is moved upwards in the process, the sliding seat 64 is driven to reset through the adjusting component 31, then the first cleaning block 61 can be continuously moved downwards to clean the second row of sieve holes, and the reverse circulation is repeated until the screen 5 inside the right containing box 4 is completely moved to the crushing box 1, because the first cleaning block 61 and the second cleaning block 62 synchronously move downwards, like this can make second clearance piece 62 clear up the screen cloth 5 right side at the in-process that first clearance piece 61 removed, and after the whole broken case 1 insides that move to of right side screen cloth 5, the pulling of rethread second spring frame made screen cloth 5 move to the right, through can reciprocating cycle like this.

Thirdly, the water pipe 71 can be connected with an external water pipe in the moving process of the screen 5, water in the external water pipe can be sprayed from the high-pressure spray head 7 through the water pipe 71, then the surface of the screen 5 is cleaned for the second time, the cleaned wastewater can be filtered through the filter screen 83, and when the filter screen 83 needs to be replaced, only the rotating plate 871 needs to be rotated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an utilize building rubbish preparation concrete to add device of aggregate, includes broken case (1), go into hopper (2), its characterized in that are installed to the top of broken case (1): the left end of the crushing box (1) is provided with a left containing box (3), the right end of the crushing box (1) is provided with a right containing box (4), the crushing box (1) and the inner part of the crushing box (1) are connected with a screen (5) in a sliding way, the two ends of the screen (5) penetrate through the two ends of the crushing box (1) and extend to the inner parts of the left containing box (3) and the right containing box (4), the right end of the screen (5) is positioned in the right containing box (4) and is internally provided with a spring frame II (52), the front surface and the rear surface of the screen (5) are both provided with a blockage clearing mechanism (6), the left containing box (3) and the right containing box (4) are both provided with two filtering mechanisms (8) at the same position in the inner parts, a plurality of high-pressure spray heads (7) are arranged above the inner walls of the left containing box (3) and the right containing box (4), and the plurality of high-pressure spray heads (7) are connected through a water pipe (71), the water delivery pipe (71) is connected with an external water pipe;

the blockage removing mechanism (6) comprises a first blockage removing block (61), a second blockage removing block (62), a power rod (63), a sliding seat (64), a non-return seat (65), a square block (66), a push plate (67) and a rubber wheel (68), wherein the first blockage removing block (61) is installed above the inside of the left containing box (3) through hydraulic lifting equipment, the second blockage removing block (62) is installed above the inside of the right containing box (4) through hydraulic lifting equipment, the power rod (63) is installed on the front surface and the rear surface of the first blockage removing block (61), an upper vertical plate (631) is installed above the inside of the power rod (63), an inclined plate (632) is installed below the upper vertical plate (631), a lower vertical plate (633) is installed below the inclined plate (632), sieve grooves (51) are formed in the front surface and the rear surface of the sieve net (5), and the blocks (66) are installed in the sieve grooves (51) at certain square interval, slide holder (64) and contrary seat (65) are installed respectively to the inner wall the place ahead and the inner wall rear of left side containing box (3), just slide holder (64) with connect through adjusting part (31) between left side containing box (3), slide holder (64) with the top of ending contrary seat (65) all rotates through connecting axle (671) and is connected with push pedal (67), slide holder (64) are close to rubber pulley (68) are installed to the one end of power pole (63).

2. The device for preparing concrete aggregate by using construction waste as claimed in claim 1, wherein the device comprises: the filtering mechanism (8) comprises an auxiliary frame (81), an auxiliary non-return shaft (82), a filter screen (83), a supporting plate (84), a pressing component (85), a main non-return shaft (86) and a main frame (87), a sub-frame (81) is arranged on the rear surface of the left containing box (3), a sub-non-return shaft (82) is rotatably connected inside the sub-frame (81), a main frame (87) is arranged on the front surface of the left containing box (3), a main non-return shaft (86) is rotatably connected inside the main frame (87), a filter screen (83) is wound between the auxiliary non-return shaft (82) and the main non-return shaft (86), the filter screen (83) penetrates through the inside of the left containing box (3), a bearing plate (84) is arranged inside the left containing box (3) and below the filter screen (83), the left containing box (3) is internally provided with a compressing component (85) above the filter screen (83).

3. The device for preparing concrete aggregate by using construction waste as claimed in claim 2, wherein: compress tightly subassembly (85) and include gallows (851) and connecting rod (852), gallows (851) are all installed to left side containing box (3) inner wall top and inside rear, the internally mounted of gallows (851) has connecting rod (852), connecting rod (852) top just is located the top of gallows (851) is installed the compression spring frame, the bottom of connecting rod (852) is rotated and is connected with running roller (853).

4. The apparatus for preparing concrete aggregate using construction waste as claimed in claim 2, wherein: the right-hand member of main frame (87) just is located the lateral wall of main contrary axle (86) is installed and is changeed board (871) and fluted disc (872), commentaries on classics board (871) and fluted disc (872) all are located the lateral wall of main contrary axle (86) is contrary, tooth (873) are installed to the lateral wall of fluted disc (872), locating plate (876) down are installed to the bottom of main frame (87), the right-hand member threaded connection of locating plate (876) has screw rod (875) down, tooth cover (874) are installed at the top of screw rod (875).

5. The device for preparing concrete aggregate by using construction waste as claimed in claim 1, wherein the device comprises: adjusting part (31) include bar groove (311), traveller (312) and first spring frame (313), inner wall the place ahead and the inner wall of left side containing box (3) and with bar groove (311) have been seted up to screen cloth (5) parallel position, the internally mounted of bar groove (311) has traveller (312), first spring frame (313) and sliding seat (64) are installed to the lateral wall of traveller (312), sliding seat (64) with traveller (312) sliding connection.

6. The device for preparing concrete aggregate by using construction waste as claimed in claim 1, wherein the device comprises: an upper electromagnet (643) is installed at one end of the bottom of the push plate (67), a lower electromagnet (642) is installed at the position, corresponding to the upper electromagnet (643), of the sliding seat (64) and the check seat (65), and a baffle (641) is installed at one end, far away from the lower electromagnet (642), of the sliding seat (64) and the check seat (65).

7. The apparatus for preparing concrete aggregate using construction waste as claimed in claim 1, wherein: a discharge port (11) is formed in the upper portion of the front surface of the crushing box (1), and an extension plate (12) is installed in front of the discharge port (11).