CN113477397B

CN113477397B - Construction waste crushing and screening system

Info

Publication number: CN113477397B
Application number: CN202110627273.9A
Authority: CN
Inventors: 周永明; 刘贵兵; 常亮; 郑春海; 袁俊青; 田佳学
Original assignee: Third Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
Current assignee: Third Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-08-16
Anticipated expiration: 2041-06-04
Also published as: CN113477397A

Abstract

The invention provides a construction waste crushing and screening system, which belongs to the technical field of construction waste treatment systems and comprises a crusher, a vibrating screen, a first conveying belt, a collecting box, a bracket, an electromagnet and a driving assembly, wherein the vibrating screen comprises a screen frame, a screen, a pull rod and a locking mechanism, the screen comprises a plurality of latitude columns and a plurality of longitude columns, the latitude columns are fixedly connected with the screen frame, and the longitude columns penetrate through the screen frame and all the latitude columns in a sliding manner. The pull rod is fixedly connected with all the longitude columns. The support is fixedly connected with the collecting box and is provided with a rotating part. The electromagnet is connected with the rotating part, and the driving assembly is used for driving the rotating part to rotate. The construction waste crushing and screening system provided by the invention can avoid the problems that a large amount of physical strength of operators is consumed and certain dangerousness is caused by manually picking up reinforcing steel bars in crushed construction waste, and the problems that the work is quite complicated because impurities such as plastic films on the screen mesh are removed one by one manually are solved.

Description

Construction waste crushing and screening system

Technical Field

The invention belongs to the technical field of construction waste treatment systems, and particularly relates to a construction waste crushing and screening system.

Background

In the production process of the construction waste reclaimed material, the construction waste is firstly put into a crusher to be crushed, then reinforcing steel bars in the crushed construction waste are manually picked up, finally the crushed construction waste is put on a vibrating screen to be screened, and the construction waste which meets the specified size is selected to be used as the filling material of the roadbed filling layer. The reinforcing bars in the broken construction waste are picked up manually, so that a large amount of physical power of operators can be consumed, and certain dangerousness is realized. And because the construction waste contains impurities such as plastic films, when the construction waste is screened by the vibrating screen, the impurities such as the plastic films can be wound on the screen cloth of the vibrating screen, so that the impurities such as the plastic films on the screen cloth are frequently removed one by one manually, and the work is quite complicated.

Disclosure of Invention

The invention aims to provide a construction waste crushing and screening system, and aims to solve the problems that a large amount of physical strength of operators is consumed and certain dangerousness is caused due to the fact that reinforcing steel bars in crushed construction waste are picked up manually, and the work is quite complicated due to the fact that impurities such as plastic films on a screen mesh are removed one by one manually.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a broken screening system of building rubbish, includes breaker and shale shaker, the shale shaker includes reel and screen cloth, the screen cloth includes a plurality of latitude post and a plurality of longitude post of arranging along the second direction of arranging along the first direction, the latitude post with reel fixed connection, longitude post slides and pierces through reel and all the latitude post, the shale shaker still includes pull rod and locking mechanical system. The pull rod is positioned on one side of the screen frame along the length direction of the longitude column and is fixedly connected with all the longitude columns. The locking mechanism is used for locking or unlocking the pull rod and the screen frame. The construction waste crushing and screening system further comprises a first conveying belt, a collecting box, a support, an electromagnet and a driving assembly. The first conveying belt is used for receiving materials crushed by the crusher and conveying the materials to the vibrating screen. The collecting box is positioned on one side of the width direction of the first conveying belt, and the upper end of the collecting box is an opening end. The support is fixedly connected with the collecting box and is provided with a rotating part capable of rotating. The electromagnet is connected with the rotating part and is provided with a first station positioned above the first conveying belt and a second station positioned above the collecting box. Drive assembly locates on the support and with the portion of rotating is connected, drive assembly is used for the drive the portion of rotating rotates, so that the electro-magnet circulates between first station and second station.

As another embodiment of the present application, the shaker further includes a scraper. The scraping plate is sleeved on all the latitude columns in a sliding mode.

As another embodiment of this application, the scraper blade has the spacing groove, the spacing groove cover is located the pull rod and the reel is close to outside the first frame of pull rod, work as the pull rod with the spacing groove is located when the outer one end butt of reel, the longitude post is kept away from the one end of pull rod is located in the first frame.

As another embodiment of the present application, the shaker screen further comprises an L-shaped hook. One end of the L-shaped hook is rotatably connected with the scraper, and when the pull rod is abutted to one end of the limiting groove outside the screen frame, the L-shaped hook can hook downwards through rotation and face the side face of the screen frame, so that the pull rod is limited to move towards the direction of the screen frame.

As another embodiment of the present application, the locking mechanism includes a stopper, a connecting member, and a driving shaft. The limiting piece is fixedly connected with the scraper. The connecting piece is fixedly connected with the pull rod. The driving shaft is perpendicular to the longitude column, and one section of the driving shaft penetrates through the limiting part and the connecting part in a sliding mode.

As another embodiment of this application, the connecting piece has the slip cap and locates the limiting plate outside the drive shaft, the limiting plate with the locating part is followed the axial interval of drive shaft sets up, the lateral wall at drive shaft middle part has outside convex location portion, location portion is located the limiting plate with between the locating part, locking mechanical system still includes compression spring. The compression spring is sleeved on the driving shaft, and two ends of the compression spring are respectively abutted to the positioning part and the limiting plate.

As another embodiment of this application, the connecting piece still have with the parallel baffle of scraper blade, the baffle with the limiting plate with pull rod fixed connection, the scraper blade is located follow in the reel latitude post length direction's one end, the locating part with the baffle orientation the side butt of scraper blade.

As another embodiment of the application, the collecting box is provided with a first side wall capable of sliding along the vertical direction, and the sliding of the first side wall is used for opening or closing one end of the collecting box corresponding to the first side wall.

As another embodiment of this application, the diapire slope setting of collecting box, the bottom of the diapire of collecting box with first lateral wall butt.

As another embodiment of the present application, the side walls of the collection bin all extend to directly below the bottom wall of the collection bin.

The construction waste crushing and screening system provided by the invention has the beneficial effects that: compared with the prior art, the construction waste crushing and screening system has the advantages that the first conveying belt conveys the construction waste crushed by the crusher, when the electromagnet is positioned at the first station, the electromagnet is electrified, so that reinforcing steel bars in materials on the first conveying belt are adsorbed on the electromagnet, when the reinforcing steel bars adsorbed on the electromagnet reach a certain amount, the driving assembly drives the rotating part to rotate, the electromagnet is positioned at the second station, then the electromagnet is powered off, so that the reinforcing steel bars adsorbed on the electromagnet fall into the collecting box, and the problems that a large amount of physical power of operators is consumed and certain dangerousness is caused when the reinforcing steel bars in the crushed construction waste are picked up manually can be solved; when impurity such as plastic film twined on the screen cloth need be picked off, locking mechanical system removes the locking of pull rod and reel, the pulling pull rod, make longitude post slide and withdraw from in the reel, impurity such as plastic film on some screen cloth just can fall in the sieve incasement of shale shaker like this, then scrape impurity such as plastic film on the latitude post in the reel along the one end of latitude post length direction and concentrate the picking off, start the shale shaker at last, make impurity such as plastic film that falls into the sieve incasement come out from the discharge gate of shale shaker, owing to need not the manual work to remove impurity such as plastic film on the screen cloth one by one, so can avoid picking impurity such as plastic film on the screen cloth one by one through the manual work, work is fairly loaded down with trivial details problem.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic axial structure diagram of a construction waste crushing and screening system according to an embodiment of the present invention;

fig. 2 is a schematic axial structure diagram of a vibrating screen in the construction waste crushing and screening system according to the embodiment of the present invention;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of a portion B of FIG. 2;

FIG. 5 is an enlarged schematic view of a portion C of FIG. 2;

fig. 6 is a schematic axial view of a structure after connection of a pull rod, a longitude post, a connecting member and the like in the construction waste crushing and screening system provided by the embodiment of the present invention;

fig. 7 is a schematic axial structure diagram of a driving shaft in the construction waste crushing and screening system according to the embodiment of the present invention;

fig. 8 is a schematic axial structure diagram of a scraper in the construction waste crushing and screening system provided by the embodiment of the invention;

fig. 9 is a schematic axial structure diagram of the construction waste crushing and screening system provided by the embodiment of the present invention after the collection box, the bracket, the electromagnet, the driving motor, and the like are connected;

fig. 10 is a schematic axial structure diagram of a rotating part in the construction waste crushing and screening system according to the embodiment of the present invention;

fig. 11 is a schematic axial-measurement structural diagram of a collecting box in the construction waste crushing and screening system according to the embodiment of the present invention;

fig. 12 is an enlarged schematic view of a portion D of fig. 11;

fig. 13 is a schematic axial structure diagram of the collecting box of the construction waste crushing and screening system provided by the embodiment of the invention, after the first side wall, the sliding rail, the sliding block and the like are removed.

In the figure: 1. a crusher; 2. a collection box; 21. a first side wall; 22. a slide rail; 23. a slider; 24. a first U-shaped handle; 3. a support; 31. a rotating part; 311. mounting a plate; 312. a rotating shaft; 3121. an annular groove; 32. a connecting plate; 4. an electromagnet; 51. a drive motor; 6. a first conveyor belt; 7. vibrating screen; 71. a screen frame; 711. a first frame; 72. screening a screen; 721. a latitude column; 722. a column of longitude; 73. a pull rod; 731. a second U-shaped handle; 74. a locking mechanism; 741. a limiting member; 7411. a connecting portion; 742. a connecting member; 7421. a limiting plate; 7422. a baffle plate; 743. a drive shaft; 7431. a positioning part; 7432. a pull ring; 744. a compression spring; 75. a squeegee; 751. a limiting groove; 76. an L-shaped hook; 8. a second conveyor belt; 9. and a third conveyor belt.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2, 5 and 6 together, the construction waste crushing and screening system according to the present invention will now be described. The construction waste crushing and screening system comprises a crusher 1 and a vibrating screen 7, wherein the vibrating screen 7 comprises a screen frame 71 and a screen 72, the screen 72 comprises a plurality of latitudinal columns 721 arranged along a first direction and a plurality of longitudinal columns 722 arranged along a second direction, the latitudinal columns 721 are fixedly connected with the screen frame 71, the longitudinal columns 722 slidably penetrate through the screen frame 71 and all the latitudinal columns 721, and the vibrating screen 7 further comprises a pull rod 73 and a locking mechanism 74. The pull rod 73 is positioned on one side of the screen frame 71 along the length direction of the longitude posts 722 and is fixedly connected with all the longitude posts 722. The lock mechanism 74 is used to lock and unlock the draw bar 73 and the screen frame 71. The construction waste crushing and screening system further comprises a first conveying belt 6, a collecting box 2, a support 3, an electromagnet 4 and a driving assembly. The first conveyor belt 6 is used for receiving the material crushed by the crusher 1 and conveying the material to the vibrating screen 7. The collecting box 2 is positioned on one side of the width direction of the first conveying belt 6, and the upper end of the collecting box is an opening end. The support 3 is fixedly connected with the collecting box 2, and the support 3 is provided with a rotating part 31 capable of rotating. An electromagnet 4 is connected to the rotating part 31, the electromagnet 4 having a first station above the first conveyor belt 6 and a second station above the collecting bin 2. The driving assembly is arranged on the bracket 3 and connected with the rotating part 31, and the driving assembly is used for driving the rotating part 31 to rotate so as to enable the electromagnet 4 to circulate between the first station and the second station.

Compared with the prior art, the construction waste crushing and screening system provided by the invention has the advantages that the first conveying belt 6 conveys the construction waste crushed by the crusher 1, when the electromagnet 4 is positioned at the first station, the electromagnet 4 is electrified, so that reinforcing steel bars in materials on the first conveying belt 6 are adsorbed on the electromagnet 4, when the reinforcing steel bars adsorbed on the electromagnet 4 reach a certain amount, the driving assembly drives the rotating part 31 to rotate, so that the electromagnet 4 is positioned at the second station, then the electromagnet 4 is powered off, so that the reinforcing steel bars adsorbed on the electromagnet 4 fall into the collecting box 2, and the problems that a large amount of physical force of operators is consumed and certain danger is caused when the reinforcing steel bars in the crushed construction waste are manually picked up can be avoided; when impurities such as plastic films wound on the screen 72 need to be removed, the locking mechanism 74 releases the locking of the pull rod 73 and the screen frame 71, pulls the pull rod 73 to enable the longitude post 722 to slide out of the screen frame 71, so that part of the impurities such as the plastic films on the screen 72 can fall into the screen box of the vibrating screen 7, then scrapes the impurities such as the plastic films on the latitude post 721 into the screen frame 71 and removes the impurities in a centralized manner along one end of the latitude post 721 in the length direction, and finally, the vibrating screen 7 is started to enable the impurities such as the plastic films falling into the screen box to come out of a discharge port of the vibrating screen 7.

In this embodiment, can set up second conveyer belt 8 and third conveyer belt 9, the material that leaks down of the discharge gate of shale shaker 7 is accepted to second conveyer belt 8, and third conveyer belt 9 is used for accepting the material that rolls off on the screen cloth 72 and carries it to the interior recrushage of breaker 1, furthest does benefit to the building rubbish.

Referring to fig. 2, 4 and 8, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, the vibrating screen 7 further includes a scraper 75. The scraper 75 is slidably sleeved on all the latitudinal bars 721. After the longitudinal bar 722 exits the screen 71, the scraping plate 75 can scrape the plastic impurities on the latitudinal bar 721 to one end of the screen 71 along the length of the latitudinal bar 721. In this embodiment, the discharge port of the vibrating screen 7 may be disposed below one end of the latitudinal column 721 in the length direction, so that impurities such as a plastic film in the screen box may be scraped into the discharge port of the vibrating screen 7 by the scraper 75.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 2, the scraper 75 has a limiting groove 751, the limiting groove 751 is sleeved outside the pull rod 73 and the first frame 711 of the screen frame 71 close to the pull rod 73, when the pull rod 73 is abutted against one end of the limiting groove 751 outside the screen frame 71, one end of the longitude post 722 far from the pull rod 73 is located in the first frame 711, and when the longitude post 722 slides out of the screen frame 71, the limiting groove 751 limits the pull rod 73 to prevent the longitude post 722 from separating from the first frame 711, so as to facilitate the longitude post 722 to penetrate into the screen frame 71.

As an embodiment of the construction waste crushing and screening system provided by the present invention, referring to fig. 2 to 3, the vibrating screen 7 further includes an L-shaped hook 76. One end of the L-shaped hook 76 is rotatably connected with the scraper 75, and when the pull rod 73 abuts against one end of the limiting groove 751 positioned outside the screen frame 71, the L-shaped hook 76 can downwardly hook the pull rod 73 towards the side surface of the screen frame 71 through rotation so as to limit the pull rod 73 to move towards the screen frame 71, and when the scraper 75 is prevented from sliding, the longitudinal column 722 fixedly connected with the pull rod 73 can influence the sliding of the scraper 75 when entering the screen frame 71.

Referring to fig. 2 and 5, as an embodiment of the construction waste crushing and screening system provided by the present invention, the locking mechanism 74 includes a limiting member 741, a connecting member 742 and a driving shaft 743. The limiting member 741 is fixedly connected to the squeegee 75. The link 742 is fixedly connected to the tension rod 73. The driving shaft 743 is perpendicular to the longitudinal column 722, and a section of the driving shaft 743 is slidably disposed through the limiting member 741 and the connecting member 742. Since the scrapers 75 are slidably disposed through all the latitudinal columns 721, the scrapers 75 can limit the sliding of the longitudinal columns 722, so that the pull rods 73 are locked with the screen frame 71. When the driving shaft 743 slides out of the limiting member 741, the longitudinal rod 722 can be driven to slide by the pull rod 73, and the locking of the pull rod 73 and the screen frame 71 is released.

Referring to fig. 5 and 7, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, a connecting member 742 has a limiting plate 7421 slidably sleeved outside a driving shaft 743, the limiting plate 7421 and a limiting member 741 are disposed at an interval along an axial direction of the driving shaft 743, a side wall of a middle portion of the driving shaft 743 has a positioning portion 7431 protruding outward, the positioning portion 7431 is located between the limiting plate 7421 and the limiting member 741, and the locking mechanism 74 further includes a compression spring 744. The compression spring 744 is fitted around the drive shaft 743, and both ends of the compression spring 744 are respectively abutted against the positioning portion 7431 and the stopper plate 7421. The drive shaft 743 is prevented from slipping out of the stopper 741 by the resilient force of the compression spring 744, thereby increasing the reliability of the present lock mechanism 74.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 5, a limiting plate 7421 is located above a limiting member 741, a pull ring 7432 is fixedly disposed at the top end of the driving shaft 743, and the driving shaft 743 can be conveniently driven to slide by the pull ring 7432.

Referring to fig. 5, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, the connecting member 742 further has a baffle 7422 parallel to the scraper 75, the baffle 7422 is fixedly connected to the limiting plate 7421 and the pull rod 73, the scraper 75 is located at one end of the screen frame 71 along the length direction of the latitudinal column 721, and the limiting member 741 abuts against the side surface of the baffle 7422 facing the scraper 75, so that the scraper 75 is fixed at one end of the screen frame 71 along the length direction of the latitudinal column 721, and the scraper 75 is prevented from affecting the operation of the vibrating screen 7.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 5, a connection portion 7411 of a square shape is disposed at a position where the limiting member 741 abuts against the baffle 7422, and one surface of the connection portion 7411 is parallel to the limiting plate 7421 and is provided with a positioning hole for the penetration of the driving shaft 743. Therefore, the positioning hole is conveniently formed in the limiting piece 741.

Referring to fig. 5, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, a second U-shaped handle 731 is fixedly disposed on a side of the pull rod 73 away from the screen frame 71. The driving link 73 can be easily moved by the second U-shaped handle 731.

As a specific embodiment of the construction waste crushing and screening system provided by the invention, please refer to fig. 9, the number of the electromagnets 4 is two, and the two electromagnets 4 are respectively located at the first station and the second station. The electromagnet 4 positioned at the first station is powered on, the electromagnet 4 positioned at the second station is powered off, and when the reinforcing steel bar on the electromagnet 4 positioned at the first station reaches a certain amount, the driving assembly drives the rotating part 31 to rotate, so that the two electromagnets 4 can be interchanged, and the device can be continuously in a state of picking up the reinforcing steel bar.

Referring to fig. 9 to 10, as an embodiment of the construction waste crushing and screening system provided by the present invention, the bracket 3 further has a connecting plate 32 located above the first conveyor 6 and parallel to the first conveyor 6, and the rotating portion 31 includes a mounting plate 311 and a rotating shaft 312. Mounting panel 311 is parallel with first conveyer belt 6 and is located between first conveyer belt 6 and the connecting plate 32, mounting panel 311 towards the surface of first conveyer belt 6 be used for with two electro-magnet 4 fixed connection. The rotating shaft 312 is perpendicular to the first conveying belt 6 and is fixedly connected to the mounting plate 311, the side surface of the rotating shaft 312 is provided with an annular groove 3121 coaxial with the rotating shaft 312, and the annular groove 3121 is rotatably clamped in the connecting plate 32. The rotation shaft 312 is rotatably mounted on the connection plate 32 through the annular groove 3121, that is, the rotation function of the rotation portion 31 is realized. Mounting panel 311 is parallel with first conveyer belt 6, just also can make electro-magnet 4 parallel with first conveyer belt 6 for electro-magnet 4 is better acts on the reinforcing bar on first conveyer belt 6 with magnetic force.

Referring to fig. 9, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, in order to implement the function of the driving assembly, the driving assembly includes a driving motor 51. The driving motor 51 is fixedly connected with the bracket 3, an output shaft of the driving motor 51 is connected with the rotating shaft 312, and the output shaft of the driving motor 51 drives the rotating shaft 312 to rotate, so that the rotation of the driving rotating part 31 is realized.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 9, the collecting box 2 has a first side wall 21 capable of sliding in a vertical direction, the sliding of the first side wall 21 is used for opening or closing one end of the collecting box 2 corresponding to the first side wall 21, and when the first side wall 21 slides to open one end of the collecting box 2 corresponding to the first side wall 21, the steel bars in the collecting box 2 can be taken out conveniently.

Referring to fig. 11 and 13, as a specific embodiment of the construction waste crushing and screening system provided by the present invention, the bottom wall of the collection box 2 is disposed obliquely, the bottom end of the bottom wall of the collection box 2 abuts against the first side wall 21, and when the first side wall 21 slides to open one end of the collection box 2 corresponding to the first side wall 21, the reinforcing bars in the collection box 2 slide out along the bottom wall of the collection box 2, so as to collect the reinforcing bars.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 11 and 13, the side walls of the collecting box 2 extend to a position right below the bottom wall of the collecting box 2, so that the collecting box 2 can be conveniently placed on the ground. In this embodiment, the other side walls of the collecting chamber 2 excluding the first side wall 21 may be fixed to the ground for the stability of the collecting chamber 2.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 11 to 12, in order to realize the function of the first side wall 21 sliding along the vertical direction, the side walls of the two collecting boxes 2 adjacent to the first side wall 21 are respectively and fixedly provided with a vertically arranged slide rail 22, the slide rail 22 is slidably connected with a slide block 23, and the two slide blocks 23 are respectively and fixedly connected with the first side wall 21. The first side wall 21 is slid by the slider 23.

Referring to fig. 12, in order not to affect the taking of steel bars from the collecting box 2, a slide rail 22 is disposed on the outer surface of the sidewall of the collecting box 2.

As a specific embodiment of the construction waste crushing and screening system provided by the present invention, please refer to fig. 11, a first U-shaped handle 24 is fixedly disposed on an outer surface of the first side wall 21, so as to conveniently drive the first side wall 21 to slide.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The construction waste crushing and screening system comprises a crusher and a vibrating screen, wherein the vibrating screen comprises a screen frame and a screen mesh, and is characterized in that the screen mesh comprises a plurality of latitude columns and a plurality of longitude columns, the latitude columns are arranged along a first direction and are fixedly connected with the screen frame, the longitude columns slidably penetrate through the screen frame and all the latitude columns, and the vibrating screen further comprises a pull rod and a locking mechanism; the pull rod is positioned on one side of the screen frame along the length direction of the longitude columns and is fixedly connected with all the longitude columns; the locking mechanism is used for locking or unlocking the pull rod and the screen frame;

broken screening system of building rubbish still includes:

the first conveying belt is used for receiving materials crushed by the crusher and conveying the materials to the vibrating screen;

the collecting box is positioned on one side of the width direction of the first conveying belt, and the upper end of the collecting box is an opening end;

the bracket is fixedly connected with the collecting box and is provided with a rotating part capable of rotating;

the electromagnet is connected with the rotating part and is provided with a first station positioned above the first conveying belt and a second station positioned above the collecting box; and

the driving assembly is arranged on the bracket and connected with the rotating part, and is used for driving the rotating part to rotate so as to enable the electromagnet to circulate between the first station and the second station;

the vibrating screen further comprises:

the scraping plates are sleeved on all the latitude columns in a sliding manner; the scraper blade has the spacing groove, the spacing groove cover is located the pull rod and the reel is close to outside the first frame of pull rod, works as the pull rod with the spacing groove is located when the outer one end butt of reel, the longitude post is kept away from the one end of pull rod is located in the first frame.

2. The construction waste crushing and screening system as claimed in claim 1, wherein the vibration sieve further comprises:

l shape hook, one end with the scraper blade rotates to be connected, works as the pull rod with the spacing groove is located during the outer one end butt of reel, L shape hook can hook downwards through rotating the pull rod orientation the side of reel, in order to restrict the pull rod to the direction of reel removes.

3. The construction waste crushing and screening system of claim 1, wherein the locking mechanism comprises:

the limiting piece is fixedly connected with the scraper;

the connecting piece is fixedly connected with the pull rod;

and the driving shaft is perpendicular to the longitude column, and one section of the driving shaft penetrates through the limiting part and the connecting part in a sliding mode.

4. The construction waste crushing and screening system according to claim 3, wherein the connecting member has a limiting plate slidably sleeved outside the driving shaft, the limiting plate and the limiting member are axially spaced apart from each other along the driving shaft, the sidewall of the middle portion of the driving shaft has a positioning portion protruding outward, the positioning portion is located between the limiting plate and the limiting member, and the locking mechanism further comprises:

and the compression spring is sleeved on the driving shaft, and two ends of the compression spring are respectively abutted against the positioning part and the limiting plate.

5. The construction waste crushing and screening system as claimed in claim 4, wherein the connecting member further has a baffle parallel to the scraper, the baffle is fixedly connected to the limiting plate and the pull rod, the scraper is located at one end of the screen frame along the length direction of the latitudinal post, and the limiting member abuts against the side of the baffle facing the scraper.

6. The construction waste crushing and screening system as claimed in claim 1, wherein the collection box has a first side wall capable of sliding in a vertical direction, and the sliding of the first side wall is used to open or close an end of the collection box corresponding to the first side wall.

7. The construction waste crushing and screening system as claimed in claim 6, wherein the bottom wall of the collection box is disposed obliquely, and the bottom end of the bottom wall of the collection box abuts against the first side wall.

8. The construction waste crushing and screening system as claimed in claim 7, wherein the side walls of the collection bin each extend to directly below the bottom wall of the collection bin.