A device and method for producing aggregate from construction waste

Abstract

The present invention relates to the technical field related to waste recycling, and in particular to an apparatus and method for producing aggregates from construction waste, including a lower frame, an upper frame, a primary crushing module, a transition module, an attraction module, a secondary crushing module, a separation module, and a discharge module. The present invention uses a jaw crusher to preliminarily crush construction waste, so that some metal parts are separated from the construction waste, and then uses an electromagnet and cooperates with a flip assembly to realize the action of the magnetic suction plate first stably descending and then rotating and tilting to gradually pull the metal parts downward to improve the separation efficiency. Subsequently, the secondary crushing module further crushes the semi-finished aggregate to make it into finished aggregate, and at the same time separates the metal parts from the aggregate through a separation screen cylinder and telescopic comb teeth. By separating the metal parts simultaneously during the crushing process, the metal parts are prevented from entering the subsequent processing links, effectively protecting the equipment from damage and improving the quality of the aggregate.

Description

Technical Field

[0001] The present invention relates to the technical field related to waste recycling, and in particular to a device and method for producing aggregates from construction waste. Background Art

[0002] Recycled aggregate from construction waste is the aggregate with a nominal particle size of less than 40mm obtained from the discarded concrete blocks generated during the demolition of buildings (structures), road renovation, concrete production, engineering construction and other situations after crushing. Recycled aggregate is divided into recycled coarse aggregate and recycled fine aggregate according to the nominal particle size. Recycled coarse aggregate is the particle with a nominal particle size greater than or equal to 5mm and less than 40mm obtained after the discarded concrete blocks are crushed and processed. Recycled fine aggregate is the particle with a nominal particle size greater than 0.5mm and less than 5mm obtained after the discarded concrete blocks are crushed and processed.

[0003] In the existing aggregate production process, such as the Chinese patent with publication number CN118287242A, a concrete aggregate production grading and screening device is disclosed, including a box, a feed hopper, a crushing device, a driving motor, a rotating shaft, a screening drum, a plurality of connecting rods, a material dividing partition and a mounting frame. The driving motor and the rotating shaft are tilted so that the screening drum is also tilted at a certain angle. The front section is used to receive the aggregates leaked from the crushing device. The aggregates move obliquely downward into the inside of the screening drum under the action of gravity and are screened during the movement. After the driving motor is started, the screening drum rotates at a uniform speed. When aggregate particles are stuck on the screening drum, they can fall from the top after rotation, so as to avoid blocking the screening drum and affecting the subsequent efficiency.

[0004] In the above-mentioned prior art, a rotatable drum screening device is mainly used to prevent aggregates from clogging the screening holes. However, the above-mentioned prior art does not take into account that construction waste (bricks, concrete blocks, etc.) may be embedded with metal parts, such as nails, bolts, nuts, washers, etc. These metal parts are combined with the construction waste and are also small in size, so they cannot be removed by magnetic separation (magnetic separation is required to recover metal parts before producing aggregates from construction waste). They can only be crushed and processed together with the construction waste. During primary crushing, since these metal parts themselves are small, they do not significantly affect the processing. However, if fine aggregates are processed, these mixed metal parts may cause the machine to get stuck and damaged, causing direct economic losses and affecting the aggregate processing efficiency.

[0005] Based on this, there is still room for improvement in the above-mentioned prior art. Summary of the invention

[0006] In order to remove metal pieces embedded in construction waste during crushing, the present application provides an apparatus and method for producing aggregates from construction waste.

[0007] In the first aspect, the present application provides a device for producing aggregates from construction waste using the following technical solution:

[0008] A device for producing aggregates from construction waste, comprising a lower frame, an upper frame, a primary crushing module, a transition module, a suction module, a secondary crushing module, a separation module, and a discharge module. The upper frame is installed on the top of the lower frame. The primary crushing module is arranged in the upper frame, and the primary crushing module performs preliminary crushing on the construction waste. The transition module is arranged on the top of the lower frame. The suction module is arranged in the transition module, and the suction module attracts and recovers metal parts in the construction waste. The secondary crushing module is arranged in the middle of the left side of the lower frame, and the secondary crushing module further crushes the construction waste to make it meet the aggregate standard. The separation module is arranged in the middle of the lower frame, and the separation module once again separates and removes the metal parts in the construction waste. The discharge module is arranged at the lower end of the lower frame, and the discharge module discharges aggregates and performs a bottom detection on the metal parts.

[0009] Preferably, the primary crushing module includes a static jaw plate, a movable jaw plate, a rotating column, and a driving group. The static jaw plate is mounted on the inner wall of the upper frame, the movable jaw plate is tilted and slidably arranged inside the upper frame, the movable jaw plate and the static jaw plate are arranged at an angle, the rotating column is eccentrically mounted on the back of the movable jaw plate, the driving group is mounted on the side wall of the upper frame, the driving group and the rotating column are fixedly connected, and the primary crushing module as a whole is a jaw crusher of the prior art, the eccentric rotating column is driven to rotate by the driving group, so that the angle between the movable jaw plate and the static jaw plate is continuously increased and decreased, and the construction waste is initially squeezed and crushed.

[0010] Preferably, the transition module includes a receiving frame, a receiving part, a material holding space, and a material unloading gap. The receiving frame is slidably arranged in the lower frame. A spring is connected between the receiving frame and the lower frame. The spring acts as an elastic buffer. The receiving frame is arranged inclined. The receiving parts are evenly installed on the receiving frame along the length direction. The material holding space is formed between the receiving parts and the bottom of the receiving frame. There is a material unloading gap between every two receiving parts. The material unloading gap is connected to the material holding space. A discharge port is opened on the rear end side wall of the lower frame. The discharge port corresponds to the material holding space. After the metal parts fall into the material holding space, they can be discharged from the discharge port to avoid excessive accumulation of metal parts in the material holding space.

[0011] Preferably, the attraction module includes an installation frame, a pull-down frame, a pull-down groove, an extrusion block, a magnetic plate, a power pack, a trigger button, and a flip assembly. The installation frame is slidably arranged in the receiving frame along the length direction, and the installation frame and the receiving frame are matched by an electric push drive. The pull-down frame is slidably arranged on the installation frame, and a second spring is connected between the pull-down frame and the installation frame, and the second spring plays a resetting role. A pull-down groove is provided in the middle of the pull-down frame, the extrusion block is installed on the inner wall of the receiving frame, and a chamfer is provided at the end of the extrusion block. The extrusion block and the pull-down groove are extruded together, and the magnetic plate is rotatably arranged on the top of the pull-down frame. The magnetic plate is an electromagnet in the prior art, and the power pack is installed in a hidden groove provided inside the installation frame. The trigger button is arranged at the bottom of the power pack. The magnetic plate, the power pack, and the trigger button are electrically connected, and the flip assembly is arranged at the end of the magnetic plate.

[0012] Preferably, the flip assembly includes a cylindrical member, a sliding groove, a square block, an upper sliding groove, an open groove, a rotating gear, and a rotating rack. The cylindrical member is slidably arranged in a sliding groove provided on the mounting frame, and the sliding groove is communicated with the hidden groove. One end of the cylindrical member is coaxially fixedly connected to the magnetic suction plate, and the square block is mounted on the outer circumference of the cylindrical member. A rectangular groove matching the square block is opened on the mounting frame. The rectangular groove consists of an upper sliding groove at the upper part and an open groove at the lower part. The upper sliding groove and the square block are slidingly engaged with each other. When the square block is located in the upper sliding groove, it can only slide along the upper sliding groove and cannot rotate. Therefore, the cylindrical member cannot rotate. When the square block moves into the open groove, the width of the open groove is larger, and the open groove no longer restricts the rotation of the square block. At this time, the cylindrical member can rotate, and the rotating gear is coaxially mounted on the outer circumference of the cylindrical member, and the rotating rack is mounted in the hidden groove. The rotating rack and the rotating gear are temporarily meshed.

[0013] Preferably, the secondary crushing module comprises a crushing roller and a filter screen. The crushing roller is electrically driven and rotatably arranged in a lower frame. The filter screen is installed in the lower frame and is located below the crushing roller.

[0014] Preferably, the separation module includes a separation screen cylinder, a fixed column, telescopic comb teeth, and a magnetic separation mechanism. The separation screen cylinder is rotatably arranged on the inner wall of the lower frame through an electric turntable. The separation screen cylinder is a hollow structure. The fixed column is installed on the inner wall of the lower frame. The fixed column is located inside the separation screen cylinder. The telescopic comb teeth are rotatably arranged at the lower end of the fixed column. A spring three is connected between the telescopic comb teeth and the fixed column. The spring three supports the telescopic comb teeth. The telescopic comb teeth are elastic and retractable structures. The magnetic separation mechanism is arranged in the lower frame. The magnetic separation mechanism is located below the separation screen cylinder.

[0015] Preferably, the magnetic separation mechanism includes a conveyor belt and a discharge port. The conveyor belt is arranged in a lower frame, and the conveyor belt is located below the separation screen drum. The lower frame is provided with a discharge port, and the discharge port corresponds to the right end position of the conveyor belt. The magnetic separation mechanism is a prior art. The conveyor belt consists of an inclined section and a horizontal section. The inclined section is surrounded by a magnetic field, so it has an adsorption effect on metal parts. However, since it is in an inclined state, the aggregates that are not adsorbed slide down under the action of gravity, thereby having a separation effect. The horizontal section is not within the range of the magnetic field, and the metal parts are normally conveyed and fall to the discharge port for discharge.

[0016] Preferably, the discharge module includes a discharge chute and an adsorption plate. The discharge chute is installed at the bottom of the lower frame. The discharge chute is inclined. The adsorption plate is evenly nested and installed on the lower surface of the discharge chute. The adsorption plate is an electromagnet in the prior art.

[0017] On the other hand, the present application provides a method for using a device for producing aggregates from construction waste, which specifically comprises the following steps:

[0018] Step 1: Input raw materials, and put the sorted construction waste that can be used for aggregate production into the primary crushing module;

[0019] Step 2: Primary crushing: The primary crushing module performs primary crushing on the construction waste, thereby crushing the construction waste into semi-finished aggregates and separating some metal parts from the construction waste;

[0020] Step 3: Primary separation: the transition module uses magnetic attraction to pull and separate the detached metal parts and discharge them out of the equipment;

[0021] Step 4: Secondary crushing: The secondary crushing module further crushes the semi-finished aggregate into finished aggregate. At the same time, the remaining metal parts are separated from the finished aggregate.

[0022] Step 5: Secondary separation: the separation module separates and removes the remaining metal parts again;

[0023] Step 6: Discharging: The discharging module discharges the finished aggregate to the designated location and performs safety magnetic protection to ensure that no metal parts remain in the aggregate.

[0024] In summary, the beneficial technical effects of this application are as follows:

[0025] The device and method for producing aggregates from construction waste described in the present invention uses a jaw crusher to preliminarily crush construction waste to separate some metal parts from construction waste, then the crushed materials are received by a receiving frame and a receiving member, and an electromagnet is used in conjunction with a flip assembly to achieve a magnetic suction plate that first stably descends and then rotates and descends, thereby gradually pulling the metal parts downward and improving the separation efficiency. After the metal parts are adsorbed, the magnetic suction plate loses its magnetism and turns into an inclined slide channel to avoid blockage. Subsequently, the secondary crushing module further crushes the semi-finished aggregate to make it It becomes the finished aggregate. At the same time, the metal parts are separated from the aggregate by the separation screen cylinder and the telescopic comb teeth. The separation screen cylinder rotates slowly through the electric turntable, which pushes the metal parts retained on the filter screen with opposite external forces, making it easier for them to enter the separation screen cylinder. The telescopic comb teeth limit the height of the metal parts, so that they remain independent in the separation screen cylinder and are easy to fall. After that, the aggregate is finally inspected for metal parts to ensure that there are no metal parts remaining in the aggregate. The present application simultaneously separates metal parts during the crushing process to prevent metal parts from entering the subsequent processing links, effectively protecting the equipment from damage and improving the quality of the aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a first three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a sectional view of the overall structure of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the transition module of the present invention;

[0029] Figure 4 The present invention Figure 3 A schematic diagram of the structure at A;

[0030] Figure 5 It is a structural schematic diagram of the receiving frame and the receiving member of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure between the installation frame, the pull-down frame, the magnetic suction plate, and the flip assembly of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the flip assembly of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the cylindrical member, square block, upper slide groove and open groove of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the filter screen, separation screen cylinder, magnetic separation mechanism and discharge chute of the present invention;

[0035] Fig.10It is a schematic structural diagram of the separation screen cylinder of the present invention;

[0036] Fig.11 It is a schematic diagram of the structure among the separation screen cylinder, the fixed column and the telescopic comb teeth of the present invention.

[0037] Description of reference numerals: 1. lower frame; 2. upper frame; 3. primary crushing module; 4. transition module; 5. attraction module; 6. secondary crushing module; 7. separation module; 8. discharge module; 31. static jaw plate; 32. movable jaw plate; 33. rotating column; 34. driving group; 41. receiving frame; 42. receiving member; 43. material storage space; 44. material discharge gap; 51. mounting frame; 52. pull-down frame; 53. pull-down groove; 54. extrusion block; 55. magnetic suction plate; 56. Power pack; 57. Trigger button; 58. Flip assembly; 581. Cylindrical member; 582. Sliding slot; 583. Square block; 584. Upper slide slot; 585. Open slot; 586. Rotating gear; 587. Rotating rack; 61. Crushing roller; 62. Filter screen; 71. Separating screen cylinder; 72. Fixed column; 73. Telescopic comb teeth; 74. Magnetic separation mechanism; 741. Conveyor belt; 742. Discharge outlet; 81. Discharge chute; 82. Adsorption plate. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 11 This application is described in further detail.

[0039] The embodiments of the present application disclose an apparatus and method for producing aggregates from construction waste, which improves the quality of aggregates and reduces the risk of equipment damage by effectively separating and recycling metal parts in construction waste.

[0040] Reference Figure 1 , Figure 2 As shown, a device for producing aggregates from construction waste includes a lower frame 1, an upper frame 2, a primary crushing module 3, a transition module 4, a suction module 5, a secondary crushing module 6, a separation module 7, and a discharge module 8. The upper frame 2 is installed on the top of the lower frame 1, the primary crushing module 3 is arranged in the upper frame 2, the primary crushing module 3 performs preliminary crushing on the construction waste, the transition module 4 is arranged on the top of the lower frame 1, the suction module 5 is arranged in the transition module 4, the suction module 5 attracts and recovers metal parts in the construction waste, the secondary crushing module 6 is arranged in the middle of the left side of the lower frame 1, the secondary crushing module 6 further crushes the construction waste to make it meet the aggregate standard, the separation module 7 is arranged in the middle of the lower frame 1, the separation module 7 once again separates and removes the metal parts in the construction waste, and the discharge module 8 is arranged at the lower end of the lower frame 1, the discharge module 8 discharges the aggregate and performs a bottom detection on the metal parts.

[0041] During actual operation, construction waste is put into the primary crushing module 3, which performs preliminary crushing on the construction waste. The construction waste is crushed into medium-sized semi-finished aggregates. At the same time, some metal parts are separated from the semi-finished aggregates. After that, the metal parts and the semi-finished aggregates fall into the transition module 4, and the attraction module 5 attracts and separates the metal parts separated from the semi-finished aggregates. The semi-finished aggregates are guided into the secondary crushing module 6 by the transition module 4. The secondary crushing module 6 crushes the semi-finished aggregates into finished aggregates (coarse aggregates). At this time, since the aggregate particles are small (less than 40 mm in diameter), the possible metal parts are also separated from the aggregates. The separation module 7 separates and recycles the metal parts separated from the aggregates, and the finished aggregates fall into the discharge module 8. The discharge module 8 performs the final metal parts inspection and outputs the aggregates to the outside. This application targets small metal parts that are easily left in construction waste. In the process of gradual crushing of construction waste, the metal parts are simultaneously recycled and separated, so as to obtain high-quality finished coarse aggregates. At the same time, it does not affect the subsequent processing of fine aggregates, reducing the risk of equipment damage.

[0042] Reference Figure 2 As shown, the present application is provided with a primary crushing module 3 to perform preliminary crushing of construction waste, and the primary crushing module 3 includes a static jaw plate 31, a dynamic jaw plate 32, a rotating column 33, and a driving group 34. The static jaw plate 31 is installed on the inner wall of the upper frame 2, and the dynamic jaw plate 32 is tilted and slidably arranged inside the upper frame 2. The dynamic jaw plate 32 and the static jaw plate 31 are arranged at an angle, and the rotating column 33 is eccentrically installed on the back of the dynamic jaw plate 32. The driving group 34 is installed on the side wall of the upper frame 2, and the driving group 34 is fixedly connected to the rotating column 33. The primary crushing module 3 is a jaw crusher of the prior art as a whole. The eccentric rotating column 33 is driven to rotate by the driving group 34, so that the angle between the dynamic jaw plate 32 and the static jaw plate 31 is continuously increased and decreased, so that the construction waste is preliminarily squeezed and crushed into semi-finished aggregate.

[0043] Reference Figure 3 As shown, the present application is provided with a transition module 4 to receive the semi-finished aggregate crushed by the primary crushing module 3, the transition module 4 includes a receiving frame 41, a receiving member 42, a material holding space 43, and a material discharge gap 44, the receiving frame 41 is slidably arranged in the lower frame 1, a spring 1 is connected between the receiving frame 41 and the lower frame 1, and the spring acts as an elastic buffer, the receiving frame 41 is inclined, the receiving member 42 is evenly installed on the receiving frame 41 along the length direction, the receiving member 42 and the bottom of the receiving frame 41 form a material holding space 43, there is a material discharge gap 44 between every two receiving members 42, the material discharge gap 44 is connected with the material holding space 43, a discharge port is opened on the rear end side wall of the lower frame 1, the discharge port corresponds to the material holding space 43, metal parts can be discharged from the discharge port after falling into the material holding space 43, so as to avoid excessive accumulation of metal parts in the material holding space 43.

[0044] In the actual receiving process, the semi-finished aggregate falls onto the receiving member 42, and the receiving frame 41 as a whole bears the impact force. Under the action of spring 1, the receiving frame 41 realizes elastic buffering to slow down the semi-finished aggregate. The semi-finished aggregate slides down along the surface of the receiving member 42, and the metal parts separated from the semi-finished aggregate fall naturally or fall into the feeding gap 44 under the traction of the suction module 5. Thereafter, the suction module 5 intermittently pulls the metal parts into the material holding space 43, and finally discharges them from the discharge port (a large amount of dust will be generated when construction waste is crushed, and the dust falling into the feeding gap 44 will enter the material holding space 43 together with the metal parts and be discharged).

[0045] Reference Figure 4 , Figure 6 , Figure 7 As shown, in order to assist the metal parts to fall into the material holding space 43, the present application is provided with an attraction module 5, which includes a mounting frame 51, a pull-down frame 52, a pull-down groove 53, an extrusion block 54, a magnetic suction plate 55, a power pack 56, a trigger button 57, and a flip assembly 58. The mounting frame 51 is slidably arranged in the receiving frame 41 along the length direction, and the mounting frame 51 and the receiving frame 41 are matched by an electric push drive. The pull-down frame 52 is slidably arranged on the mounting frame 51, and a spring 2 is connected between the pull-down frame 52 and the mounting frame 51, and the spring 2 plays a reset role A pull-down groove 53 is provided in the middle of the pull-down frame 52, and an extrusion block 54 is installed on the inner wall of the receiving frame 41. A chamfer is provided at the end of the extrusion block 54. The extrusion block 54 and the pull-down groove 53 are extruded together. The magnetic plate 55 is rotatably set on the top of the pull-down frame 52. The magnetic plate 55 is an electromagnet in the prior art. The power pack 56 is installed in a hidden groove provided inside the mounting frame 51. The trigger button 57 is set at the bottom of the power pack 56. The magnetic plate 55, the power pack 56 and the trigger button 57 are electrically connected. The flip assembly 58 is set at the end of the magnetic plate 55.

[0046] Reference Figure 7 , Figure 8As shown, the flip assembly 58 includes a cylindrical member 581, a sliding groove 582, a square block 583, an upper sliding groove 584, an open groove 585, a rotating gear 586, and a rotating rack 587. The cylindrical member 581 is slidably arranged in the sliding groove 582 provided on the mounting frame 51, and the sliding groove 582 is communicated with the hidden groove. One end of the cylindrical member 581 is coaxially fixedly connected with the magnetic suction plate 55. The square block 583 is installed on the outer periphery of the cylindrical member 581. A rectangular groove cooperating with the square block 583 is provided on the mounting frame 51. The rectangular groove consists of an upper sliding groove 584 at the top and an open groove 585 at the bottom. The upper slide groove 584 and the square block 583 are in a sliding snap-fitting fit. When the square block 583 is in the upper slide groove 584, it can only slide along the upper slide groove 584 and cannot rotate. Therefore, the cylindrical member 581 cannot rotate. When the square block 583 moves to the open groove 585, the width of the open groove 585 is larger, and the open groove 585 no longer restricts the rotation of the square block 583. At this time, the cylindrical member 581 can rotate, and the rotating gear 586 is coaxially installed on the outer periphery of the cylindrical member 581, and the rotating rack 587 is installed in the hidden groove. The rotating rack 587 and the rotating gear 586 are in a temporary meshing fit.

[0047] During the actual attraction process, the metal piece falls onto the receiving piece 42, and under the magnetic attraction of the magnetic plate 55, the metal piece is attracted into the material discharge gap 44 (the metal piece is relatively small in size, and there is also a situation where the metal piece naturally falls directly into the material discharge gap 44. The role of the magnetic attraction is to ensure that the metal piece is attracted into the material discharge gap 44). Afterwards, the mounting frame 51 is driven by the electric push drive and periodically moves to the upper right at regular intervals. The moving mounting frame 51 gradually brings the pull-down frame 52 and the extrusion block 54 closer, and the extrusion block 54 squeezes the pull-down groove 53 to move the pull-down frame 52 downward, and the magnetic plate 55 moves downward with the pull-down frame 52. During the downward movement, the square block 583 initially slides in the upper slide groove 584. At this time, the cylindrical piece 581 is restricted and cannot rotate, so the magnetic plate 55 cannot rotate. Afterwards, the square block 583 slides into the open groove 585 , the open groove 585 no longer restricts the rotation of the square block 583. At the same time, the descending rotating gear 586 contacts and meshes with the rotating rack 587. Under the meshing action, the rotating gear 586 rotates, the cylindrical member 581 rotates following the rotating gear 586, and the magnetic plate 55 rotates, so that the magnetic plate 55 first descends steadily and then rotates and tilts down, thereby gradually pulling the metal part downward, and the metal part is pulled into the material holding space 43. After that, the cylindrical member 581 that descends to the bottom presses the trigger button 57. The trigger button 57 turns off the power pack 56, the magnetism of the magnetic plate 55 disappears, and the metal part loses its magnetic attraction, so that it naturally falls to the bottom of the material holding space 43 and is finally discharged from the discharge port (the previous rotation and tilting action of the magnetic plate 55 makes the magnetic plate 55 that has lost its magnetism serve as an inclined slide channel to assist in falling, avoiding blockage).

[0048] Reference Figure 2 As shown, in order to process semi-finished aggregate into qualified finished aggregate, the present application is provided with a secondary crushing module 6, which includes a crushing roller 61 and a filter screen 62. The crushing roller 61 is rotated by electric drive and is arranged in the lower frame 1. The filter screen 62 is installed in the lower frame 1, and the filter screen 62 is located below the crushing roller 61.

[0049] During the actual processing, the semi-finished aggregate falls into the secondary crushing module 6, and the electric drive drives the crushing roller 61 to rotate to crush the semi-finished aggregate. Qualified aggregate falls through the filter screen 62, and unqualified aggregate is retained until it is crushed into qualified aggregate that can pass through the filter screen 62.

[0050] Reference Figure 9-11As shown, in order to separate metal parts from aggregates, the present application is provided with a separation module 7, which includes a separation screen cylinder 71, a fixed column 72, telescopic comb teeth 73, and a magnetic separation mechanism 74. The separation screen cylinder 71 is rotatably arranged on the inner wall of the lower frame 1 through an electric turntable, and the separation screen cylinder 71 is a hollow structure. The fixed column 72 is installed on the inner wall of the lower frame 1, and the fixed column 72 is located inside the separation screen cylinder 71. The telescopic comb teeth 73 are rotatably arranged at the lower end of the fixed column 72. A spring three is connected between the telescopic comb teeth 73 and the fixed column 72, and the spring three plays a supporting role for the telescopic comb teeth 73. The telescopic comb teeth 73 are an elastic and retractable structure. The magnetic separation mechanism 74 is arranged in the lower frame 1, and the magnetic separation mechanism 74 is located below the separation screen cylinder 71.

[0051] Reference Fig. 9 As shown, the magnetic separation mechanism 74 includes a conveyor belt 741 and a discharge port 742. The conveyor belt 741 is arranged in the lower frame 1, and the conveyor belt 741 is located below the separation screen drum 71. The lower frame 1 is provided with a discharge port 742, and the discharge port 742 corresponds to the right end position of the conveyor belt 741. The magnetic separation mechanism 74 is a prior art. The conveyor belt 741 consists of an inclined section and a horizontal section. The inclined section is surrounded by a magnetic field, so it has an adsorption effect on metal parts. However, since it is in an inclined state, the aggregate that is not adsorbed slides down under the action of gravity, thereby having a separation effect. The horizontal section is not within the range of the magnetic field, and the metal parts are normally conveyed and fall to the discharge port 742 for discharge.

[0052] In the actual separation process, the separation sieve drum 71 rotates slowly under the drive of the electric turntable. The rotation direction of the separation sieve drum 71 is opposite to that of the crushing roller 61, thereby exerting an external force on the metal pieces retained on the filter screen 62 in the opposite direction, so that the metal pieces are kept in a horizontal state as much as possible, making it easier for them to enter the separation sieve drum 71. The metal pieces entering the separation sieve drum 71 roll under the drive of the separation sieve drum 71 and continue to fall through the separation sieve drum 71 to the magnetic separation mechanism 74. In order to ensure the smooth falling of the metal pieces, the telescopic comb There is a gap between the teeth 73 and the inner wall of the separation screen cylinder 71. The height of the tumbling metal parts is limited by the telescopic comb teeth 73, so that they are in an independent state at the bottom of the separation screen cylinder 71 as much as possible, without being hooked with other metal parts, so as to facilitate falling. At the same time, the telescopic comb teeth 73 can be extended and retracted, and can also rotate a certain angle around the fixed column 72 to adapt to the specifications of different metal parts and avoid excessive accumulation of metal parts due to untimely falling. The metal parts falling to the magnetic separation mechanism 74 are adsorbed by the conveyor belt 741 and finally discharged from the discharge port 742.

[0053] Reference Figure 2As shown, the discharge module 8 includes a discharge chute 81 and an adsorption plate 82. The discharge chute 81 is installed at the bottom of the lower frame 1. The discharge chute 81 is inclined. The adsorption plate 82 is evenly nested and installed on the lower surface of the discharge chute 81. The adsorption plate 82 is an electromagnet in the prior art.

[0054] During operation, the particles of the finished coarse aggregate may be larger than some metal parts, such as an iron nail. If it lies horizontally on the filter screen 62, it will not fall. If the iron nail stands upright, it may fall from the filter screen 62. In order to remove metal parts from the aggregate, when the aggregate slides on the discharge chute 81, the adsorption plate 82 adsorbs the metal parts therein to prevent the metal parts from being mixed in the finished aggregate. At the end of the work, the power is disconnected, the adsorption plate 82 loses its magnetism, and the metal parts can be collected (the number of metal parts that reach this point is small).

[0055] Last reference Figure 1-Figure 11 As shown, the present application also discloses a method for using a device for producing aggregates from construction waste. Specifically, the method comprises the following steps:

[0056] Step 1: Put the raw materials into the primary crushing module 3;

[0057] Step 2: Primary crushing: the primary crushing module 3 performs primary crushing on the construction waste, thereby crushing the construction waste into semi-finished aggregates and separating some metal parts from the construction waste;

[0058] Step 3: Primary separation: the transition module 4 uses magnetic attraction to pull and separate the detached metal parts and discharge them out of the device;

[0059] Step 4: Secondary crushing: the secondary crushing module 6 further crushes the semi-finished aggregate to make it into finished aggregate. At the same time, the remaining metal parts are separated from the finished aggregate.

[0060] Step 5: Secondary separation: the separation module 7 separates and removes the remaining metal parts again;

[0061] Step 6: Discharging: the discharging module 8 discharges the finished aggregate to the designated location and performs safety magnetic protection to ensure that no metal parts remain in the aggregate.

[0062] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for producing aggregates from construction waste, characterized in that: include: A lower frame (1) with an upper frame (2) mounted on top; A primary crushing module (3) is arranged in the upper frame (2), and the primary crushing module (3) performs preliminary crushing on the construction waste; A transition module (4), which is arranged on the top of the lower frame (1); A suction module (5) is arranged in the transition module (4), and the suction module (5) sucks and recovers metal parts in the construction waste; A secondary crushing module (6) is arranged in the middle of the left side of the lower frame (1), and the secondary crushing module (6) further crushes the construction waste to meet the aggregate standard; A separation module (7) is arranged in the middle of the lower frame (1), and the separation module (7) once again separates and removes metal parts from the construction waste; A discharge module (8) is arranged at the lower end of the lower frame (1), and the discharge module (8) discharges aggregates and performs bottom detection on metal parts; The transition module (4) comprises: A receiving frame (41) is slidably arranged in the lower frame (1), a spring 1 is connected between the receiving frame (41) and the lower frame (1), and the receiving frame (41) is arranged in an inclined manner; The receiving member (42) is evenly mounted on the receiving frame (41) along the length direction, and a material holding space (43) is formed between the receiving member (42) and the bottom of the receiving frame (41), and a material discharge gap (44) is provided between two receiving members (42), and the material discharge gap (44) is connected to the material holding space (43), and a material discharge port is provided on the rear end side wall of the lower frame (1), and the material discharge port corresponds to the material holding space (43); The attraction module (5) comprises: A mounting frame (51) is slidably disposed in the receiving frame (41) along the length direction, and the mounting frame (51) and the receiving frame (41) are matched with each other through an electric push drive; A pull-down frame (52) is slidably arranged on the mounting frame (51), a second spring is connected between the pull-down frame (52) and the mounting frame (51), and a pull-down groove (53) is provided in the middle of the pull-down frame (52); An extrusion block (54) is mounted on the inner wall of the receiving frame (41), the end of the extrusion block (54) is provided with a chamfer, and the extrusion block (54) and the lower pull groove (53) are extrusion-fitted; A magnetic attraction plate (55) is rotatably arranged on the top of the pull-down frame (52); A power pack (56) installed in a hidden slot provided inside the installation frame (51); A trigger button (57) is arranged at the bottom of the power supply group (56), and the magnetic plate (55), the power supply group (56) and the trigger button (57) are electrically connected; A flip assembly (58) is arranged at the end of the magnetic attraction plate (55); The separation module (7) comprises: A separation screen cylinder (71) is rotatably arranged on the inner wall of the lower frame (1) by means of an electric turntable, and the separation screen cylinder (71) is a hollow structure; A fixed column (72) is mounted on the inner wall of the lower frame (1), and the fixed column (72) is located inside the separation screen cylinder (71); The telescopic comb teeth (73) are rotatably arranged at the lower end of the fixed column (72), a spring 3 is connected between the telescopic comb teeth (73) and the fixed column (72), and the telescopic comb teeth (73) are elastic and telescopic structures; The magnetic separation mechanism (74) is arranged in the lower frame (1), and the magnetic separation mechanism (74) is located below the separation screen drum (71).

2. The equipment for producing aggregate from construction waste according to claim 1, characterized in that: The primary crushing module (3) comprises: A static jaw plate (31) mounted on the inner side wall of the upper frame (2); A movable jaw plate (32) is obliquely and slidably arranged inside the upper frame (2), and the movable jaw plate (32) and the static jaw plate (31) are arranged at an angle; A rotating column (33) eccentrically mounted on the back of the movable jaw plate (32); The driving group (34) is installed on the side wall of the upper frame (2), and the driving group (34) is fixedly connected to the rotating column (33).

3. The equipment for producing aggregate from construction waste according to claim 1, characterized in that: The flip assembly (58) comprises: The cylindrical member (581) is slidably arranged in a sliding groove (582) provided on the mounting frame (51), the sliding groove (582) is communicated with the hidden groove, and one end of the cylindrical member (581) is coaxially fixedly connected to the magnetic attraction plate (55); A square block (583) is mounted on the outer periphery of the cylindrical member (581), and a rectangular groove matching the square block (583) is provided on the mounting frame (51), wherein the rectangular groove is composed of an upper slide groove (584) at the upper part and an open groove (585) at the lower part; A rotating gear (586) is coaxially mounted on the outer periphery of the cylindrical member (581); The rotating rack (587) is installed in the hidden groove, and the rotating rack (587) and the rotating gear (586) are temporarily meshed.

4. The equipment for producing aggregate from construction waste according to claim 1, characterized in that: The secondary crushing module (6) comprises: A crushing roller (61) which is electrically driven and rotatably arranged in the lower frame (1); A filter screen (62) is installed in the lower frame (1), and the filter screen (62) is located below the crushing roller (61).

5. The equipment for producing aggregate from construction waste according to claim 1, characterized in that: The magnetic separation mechanism (74) comprises: The conveyor belt (741) is arranged in the lower frame (1). The conveyor belt (741) is located below the separation screen drum (71). The lower frame (1) is provided with a discharge port (742), and the discharge port (742) corresponds to the right end position of the conveyor belt (741).

6. The equipment for producing aggregate from construction waste according to claim 1, characterized in that: The discharge module (8) comprises: The discharge chute (81) is installed at the bottom of the lower frame (1). The discharge chute (81) is inclined, and the lower surface of the discharge chute (81) is evenly nested with adsorption plates (82).

7. A method for producing aggregates from construction waste, characterized in that: The method for producing aggregate from construction waste uses the device for producing aggregate from construction waste as described in any one of claims 1 to 6, comprising the following steps: Step 1: Putting in raw materials, putting the sorted construction waste that can be used for aggregate production into the primary crushing module (3); Step 2: Primary crushing: The primary crushing module (3) performs primary crushing on the construction waste, thereby crushing the construction waste into semi-finished aggregates and separating a portion of the metal parts from the construction waste; Step 3: Primary separation: the transition module (4) uses magnetic attraction to pull and separate the detached metal parts and discharge them out of the device; Step 4: Secondary crushing: The secondary crushing module (6) further crushes the semi-finished aggregate into finished aggregate. Meanwhile, the remaining metal parts are separated from the finished aggregate. Step 5: Secondary separation: the separation module (7) separates and removes the remaining metal parts again; Step 6: Discharging: the discharging module (8) discharges the finished aggregate to a designated location and performs magnetic suction protection to ensure that no metal parts remain in the aggregate.

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