Crushing device for solid waste treatment

Abstract

The invention discloses a crushing device for solid waste treatment, and belongs to the technical field of crushing equipment.The crushing device for solid waste treatment comprises a feeding box, the feeding box comprises a conical hopper with an inlet formed in the upper right portion, a material throwing roller rotating clockwise is horizontally arranged on the left side of the inlet of the conical hopper front and back, and a lining plate is installed on the portion, located on the right side of the material throwing roller, of the conical hopper. Through the feeding box, the grading box, the screener, the crusher and the distribution piece, the feeding box and the grading box can conduct primary crushing and screening on input aggregate, the large-size aggregate and ferromagnetic impurities such as steel bar heads are conveyed to the screener together, floating dust and the ferromagnetic impurities on the surface of the aggregate are cleaned away through the screener, and the screening effect is good. And small-size aggregate and soil bypass the crusher and are conveyed through the distribution piece, so that the working intensity of the crusher is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of crushing equipment, and particularly relates to a crushing device for solid waste treatment. Background Art

[0002] In the process of construction waste treatment, large pieces of concrete are broken into small pieces. After cleaning and screening, they are used as recycled aggregates to replace stones and added to concrete for pouring the lower foundation or other buildings with lower structural strength requirements, which can effectively recycle solid construction waste and reasonably reduce infrastructure costs.

[0003] The existing Chinese utility model patent with the publication number CN207401526U discloses a device for crushing, recycling and reusing reinforced concrete. Columnar magnets are added to the hollow extrusion rollers to recover the steel bars in the concrete after crushing. However, collecting the steel bars after the concrete and steel bars are squeezed by the extrusion rollers will cause the extrusion rollers to be subjected to the reaction force of the high-hardness steel bars when crushing the concrete, resulting in a significant increase in the rotational resistance of the extrusion rollers, and the crusher operates at a high load. In addition, the structural strength of the hollow extrusion rollers is reduced, and it is easy to have concave deformation. In view of this, a crushing device for solid waste treatment is provided. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a crushing device for solid waste treatment.

[0005] The technical solution adopted to solve the above technical problem is as follows: A crushing device for solid waste treatment, comprising: a feeding box, the feeding box includes a conical hopper with an inlet provided at the upper part of one side, a throwing roller rotating clockwise is arranged at the inlet of the conical hopper, and a lining plate is installed at the vertical side wall of the conical hopper opposite to the throwing roller; a grading box, the grading box includes a main frame placed below the conical hopper, a suspension bracket is installed in the middle of the inner side of the main frame, a wedge-shaped gap is provided between the suspension brackets, an output hopper 1 is arranged at the discharge end of the main frame where the suspension brackets are located, and an output hopper 2 is arranged below the suspension brackets of the main frame; a sieve, the sieve includes a relay shell provided downstream of the output hopper 1, a turntable is installed at the top of the relay shell, a vertical cylinder is connected and installed at the bottom end of the turntable, the turntable provides high-pressure air flow for the vertical cylinder, an electromagnet and a mesh cover are installed on the circumferential outer wall of the vertical cylinder, and a brush bundle is installed between the bottom end of the turntable at the rotation center line and the vertical cylinder; a crusher, the crusher is installed at the bottom opening of the relay shell; a distributor, the distributor is connected to the bottom end of the output hopper 2 to provide continuous negative pressure suction, and the distributor includes a three-way shell, and a sieve plate is installed inside the three-way shell.

[0006] Furthermore, a top cover is installed on the upper part of the cone bucket, and a feeding gap is left between the end of the top cover close to the entrance of the cone bucket and the top surface of the cone bucket. The end of the top cover away from the entrance of the cone bucket is bent downward and extends vertically. A feeding gap is formed between the bottom surface of the downward bent end of the top cover and the top surface of the suspension frame, and a flat piece is installed on the bottom surface of the left end of the top cover.

[0007] Through the above technical solution, the top cover reduces the opening range of the cone bucket entrance, and cooperates with the leveling piece to perform compensatory shielding on the left end of the feeding gap. After the aggregate entering the feeding gap is crushed by the throwing roller, the leveling piece can flatten the aggregate moving to the left and block the aggregate in the feeding gap from being thrown upward and left to prevent splashing.

[0008] Furthermore, the vertical side wall of the cone bucket opposite to the throwing roller is configured as a reinforcing plate with its lower end tilted downward to the left, the lining plate covers the side wall of the reinforcing plate, and the vertical inner wall of one end of the top cover bent downward is installed with a lining plate.

[0009] Through the above technical solution, reinforcing ribs are provided on the right side of the reinforcing plate, which has strong impact resistance. Most of the aggregates contacting the throwing roller will be thrown to the right and lower right, so the contact surface between the aggregate and the cone bucket is strengthened in a targeted manner to ensure the crushing effect and reduce the damage to the cone bucket. A lining plate can also be installed on the top cover to reduce the damage caused by the impact of aggregates on the top cover.

[0010] Furthermore, the grading box also includes a bearing plate, which is located directly below the throwing roller, fixedly connected to the inner wall of the main frame, with the end of the bearing plate extending downwardly and tilted, and the suspension frame is arranged at the lowest point of the bearing plate.

[0011] Through the above technical solution, the bearing plate is used as a relay, adopts an integral plate structure, and a horizontal reinforcement strip is set on the top surface. It receives aggregates with impact potential energy near the throwing roller to prevent the suspension frame from being directly impacted by high-speed aggregates and causing deformation. It can also achieve uniform conveying of aggregates to the left, so that the aggregates can be smoothly screened when they move to the suspension frame.

[0012] Furthermore, the suspension frames are horizontally provided with a plurality of groups, the ends of the suspension frames are inclined and extended downward, the heights of adjacent suspension frames are reduced in a step-like manner, and a support is installed below the suspension frames, and the support is fixedly connected to the inner wall of the main frame.

[0013] Through the above technical solution, the suspension frames are arranged in multiple groups, and the height is gradually reduced from right to left, so that the aggregate can slide smoothly to the left, and the two ends of the suspension frames are supported by supports to ensure the structural strength of the suspension frames. A stepped drop is formed between adjacent suspension frames, so that the aggregate falls and rolls when moving to the left, and the upper aggregate can smoothly contact the suspension frame and enter the wedge-shaped gap, thereby improving the screening effect.

[0014] Furthermore, a mesh plate is installed between the top end of the output bucket 2 and the bottom end of the main frame, the mesh plate is tilted downward near the end of the output bucket 1, and the output bucket 1 is installed at the lowest point of the mesh plate.

[0015] Through the above technical solution, the mesh plate can perform secondary screening on the aggregates passing through the wedge-shaped gap, so that the aggregates with larger volume but special shape that can pass through the wedge-shaped gap are intercepted and will not be directly collected by bypassing the crusher, thereby further ensuring the screening effect.

[0016] Furthermore, the top surface of the turntable is provided with a tooth groove, and a position sensor is installed on the relay shell opposite to the tooth groove. The turntable is tilted downward near a position of the output bucket, and the electromagnet is arranged on the side of the vertical cylinder away from the axis of the turntable. A receiving bucket is provided below the vertical cylinder at the highest point of the turntable.

[0017] Through the above technical scheme, when the electromagnet continuously adsorbs and screens ferromagnetic debris, the vertical cylinder on the right side can be moved to the left and lifted up as the turntable rotates. In a place far away from the downward range of the aggregate, the electromagnet can be powered off to make the ferromagnetic debris fall, be collected by the receiving bucket and transported separately, ensuring that the electromagnet can stably perform long-term magnetic separation work.

[0018] Furthermore, the turntable has a built-in communication cavity, a universal tube is installed between the turntable and the vertical tube, and the communication cavity is connected with the vertical tube through the universal tube.

[0019] Through the above technical solution, the universal tube can be bent so that the vertical tube remains vertical under the action of gravity, ensuring that the receiving bucket can stably collect the falling ferromagnetic debris, and when large aggregates contact the vertical tube, the universal tube can be bent under force, causing the vertical tube to swing and reduce impact damage.

[0020] Furthermore, the distribution member also includes a receiving shell, which is connected to the output bucket 2, a rotating shaft is rotatably installed on the inner lower part of the tee shell, the screen plate is installed on the circumferential side wall of the rotating shaft, a reflux shell is installed at one outlet of the tee shell, and a suction shell is installed at the other outlet of the tee shell, and a collecting box is installed at the bottom outlet position of the crusher, and the lower end of the reflux shell extends into the collecting box.

[0021] Through the above technical scheme, the receiving shell receives the finely crushed aggregate and soil falling from the second position of the output bucket. In the aggregate crushing environment with excessive mud content, the screen plate can rotate to block the reflux shell, so that the upper soil and airflow are only discharged through the suction shell position, and part of the aggregate entering the distribution part is abandoned, so as to ensure the function of suppressing dust as much as possible and flexibly adapt to different aggregate environments.

[0022] Furthermore, the vertical side wall of the three-way shell is installed with a first baffle and a second baffle, the sieve plate is overlapped at the first baffle to seal the top of the suction shell, and the sieve plate is overlapped at the second baffle to seal the top of the reflux shell.

[0023] Through the above technical solution, the first retaining strip and the second retaining strip are installed on the inner wall of the tee shell, which has a straight side wall and a large contact area with the straight side wall of the sieve plate, providing stable support for the sieve plate. The first retaining strip can keep the sieve plate at the top of the suction shell and is perpendicular to the extension direction of the suction shell. Similarly, the second retaining strip can keep the sieve plate at the top of the reflux shell and is perpendicular to the extension direction of the reflux shell.

[0024] The beneficial effects of the present invention are as follows: (1) Through the feed box, grading box, sieve, crusher and distributor, the feed box and the grading box can perform primary crushing and screening on the input aggregate, conveying large-volume aggregates and ferromagnetic impurities such as steel bar heads to the sieve together, and using the sieve to clean the floating dust and ferromagnetic impurities on the surface of the aggregate. Small-volume aggregates and soil bypass the crusher and are conveyed through the distributor, reducing the working intensity of the crusher; (2) Through the design of the grading box, multiple suspension brackets with stepped height reduction can enable small-volume aggregates to smoothly fall from the wedge-shaped gap during the movement of the aggregates, and can also prevent the aggregates from getting stuck in the wedge-shaped gap, ensuring smooth movement. Moreover, the stepped height difference of the suspension brackets can make the aggregates roll and fall, preventing the fine aggregates in the upper layer from being blocked by the large-volume aggregates below and unable to pass through the wedge-shaped gap, ensuring the screening effect; (3) Through the optimization of the sieve, the electromagnet that circulates close to and away from the downward-moving aggregate can adsorb ferromagnetic impurities, and the vertical cylinder discharges air to make the brush bundle vibrate to clean the floating dust on the surface of the aggregate. When lifting the ferromagnetic impurities away from the downward-moving aggregate, the vertical cylinder and the brush bundle can also play a role in blocking the downward-moving aggregate, enabling the electromagnet to cut off the power supply so that the ferromagnetic impurities can be smoothly collected and exported by the receiving hopper in a relatively independent space. Description of the Drawings

[0025] Figure 1 is the first perspective structure diagram of the present invention; Figure 2 is the second perspective structure diagram of the present invention; Figure 3 is the structure schematic diagram of the present invention in the state of removing the frame; Figure 4 is the sectional view between the feed box and the grading box of the present invention; Figure 5 is the structure schematic diagram of the upper half of the grading box of the present invention; Figure 6 is the position schematic diagram of the upper half of the sieve of the present invention; Figure 7 is the sectional view of the upper half of the sieve of the present invention; Figure 8 is the structure schematic diagram of some components in the sieve of the present invention; Figure 9 Is a sectional view of the distribution part of the present invention; Figure 10 Is Figure 9 The enlarged view of the structure at a in

[0026] Reference numerals: 1, feed box; 11, conical hopper; 12, top cover; 13, throwing roller; 14, lining plate; 15, flattening member; 2, grading box; 21, base; 22, main frame; 23, bearing plate; 24, suspension bracket; 25, perforated plate; 26, first output hopper; 27, second output hopper; 28, support; 29, wedge-shaped slot; 3, sieve; 31, relay housing; 32, turntable; 321, communication cavity; 322, tooth groove; 33, universal pipe; 34, vertical cylinder; 35, mesh cover; 36, electromagnet; 37, position sensor; 38, brush bundle; 39, receiving hopper; 4, crusher; 5, distribution part; 51, receiving housing; 52, tee housing; 53, sieve plate; 54, reflux housing; 55, suction housing; 56, rotating shaft; 57, first stop bar; 58, second stop bar; 6, collecting box; 7, frame. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] As Figures 1 - 10 shown, this embodiment provides a crushing device for solid waste treatment. To solve the practical problems of serious dust emission and high-load operation of the crusher in existing equipment, a specific improved configuration is provided: A frame 7 is provided, and the frame 7 provides installation positions for the feed box 1, the grading box 2, the sieve 3, the crusher 4 and the distribution part 5. And, a maintenance platform with a ladder is provided so that the staff can perform maintenance on the components located at high positions.

[0029] Regarding the feed box 1, refer to Figure 1 And Figure 4, the feeding box 1 includes a conical hopper 11 with an inlet provided at the upper right part. The conical hopper 11 is wider at the top and narrower at the bottom, and is designed with an open top that runs through from top to bottom, so that the aggregate can enter the conical hopper 11 from right to left. Among them, a throwing roller 13 is arranged on the left side of the inlet of the conical hopper 11. The throwing roller 13 is horizontally arranged and its axis extends back and forth and is installed in the conical hopper 11 through bearings. After the aggregate enters the conical hopper 11, it will be thrown to the left due to its own conveying inertia and contact the throwing roller 13. The throwing roller 13 is driven by an external device to rotate clockwise. The throwing roller 13 is radially provided with a plurality of striking heads, which can contact the left-moving aggregate and strike it to the right. The rotational speed of the throwing roller 13 is superimposed on the self-speed of the aggregate, so that the aggregate is impacted and broken. A lining plate 14 is installed on the right side of the throwing roller 13 in the conical hopper 11. The lining plate 14 is installed at the position of the main landing point range after being struck by the throwing roller 13, and can perform a secondary impact on the aggregate to further break the aggregate. In this process, large pieces of aggregate with lower hardness and aggregate masses wrapped outside the steel bars will be struck and broken into small pieces, resulting in a large volume difference from large-volume aggregates such as steel bar heads and high-strength aggregate masses that cannot be broken; Regarding the grading box 2, refer to Figure 2 and Figure 4 , the grading box 2 includes a main frame 22 placed below the conical hopper 11. After aggregates with a large volume difference enter the main frame 22 together, a suspension bracket 24 is installed in the middle of the inner side of the main frame 22. A wedge-shaped gap 29 is provided between the suspension brackets 24. Large-volume aggregates and steel bar heads will be held by the suspension brackets 24, while small-volume aggregates will fall from the position of the wedge-shaped gap 29. Refer to Figure 5 , the aggregate moves from right to left, and the size of the wedge-shaped gap 29 gradually increases from right to left. The aggregate generates the potential energy of leftward sliding under its own weight, ensuring that the aggregate will not get stuck in the wedge-shaped gap 29. Because the opening is getting larger and larger, the large-volume aggregates do not affect the smooth downward movement of the small-volume aggregates. At the same time, a vibration motor can be installed on the outer wall of the main frame 22, and a base 21 for the main frame 22 to shake independently is provided below the main frame 22. That is, the base 21 and the main frame 22 are connected by rubber pads and can shake independently. The suspension bracket 24 is fixedly connected to the main frame 22, so that the aggregate can jump by the shaking of the main frame 22, ensuring that the aggregate can move more smoothly to the left. And, an output hopper 1 26 is provided at the left end of the main frame 22 where the suspension bracket 24 is located. Aggregates that cannot pass through the wedge-shaped gap 29 will gather at the position of the output hopper 1 26 and continue to be conveyed to the left, while an output hopper 2 27 is provided below the main frame 22 where the suspension bracket 24 is located. Aggregates that can pass through the wedge-shaped gap 29 can be conveyed downward through the output hopper 2 27, completing the diversion between aggregates of different volumes; Regarding the sieve 3, refer to Figure 3 and Figure 6, the filter 3 includes a relay housing 31 provided downstream of the output hopper 1 - 26. Large - volume aggregates and steel bars that cannot be impact - broken will fall downward at the position of the relay housing 31. At the top of the relay housing 31, a turntable 32 with a vertically - arranged axis is installed. At the bottom - edge of the turntable 32, a hollow vertical cylinder 34 is connected and installed. The vertical cylinder 34 is vertically arranged on the path of the descending aggregates, so that the descending aggregates can contact the vertical cylinder 34. The top of the turntable 32 is connected to an air - supply pump, and the air - supply pump provides continuous air flow for the vertical cylinder 34. On the circumferential outer wall of the vertical cylinder 34, symmetrically - arranged electromagnets 36 and mesh covers 35 are installed. Among them, the electromagnets 36 can be electrified to generate magnetic force to attract ferromagnetic impurities in the aggregates, ensuring the cleanliness of the aggregates and avoiding affecting the subsequent treatment and use of the aggregates. Because ferromagnetic impurities will oxidize after contacting moisture and air, aggregates mixed with more ferromagnetic impurities will reduce the structural strength of concrete during subsequent secondary utilization. At the same time, on the outer wall of the bottom of the turntable 32 between the rotation center line and the vertical cylinder 34, a brush bundle 38 is installed. When contacting the descending aggregates, it sweeps away the soil and dust on the surface of the aggregates, so that it is not necessary to wash the aggregates with water, saving the subsequent aggregate drying process and sewage treatment process. And, to ensure that the effect of aggregate cleaning meets the standard, the brush bundle 38 can be blown by the air flow ejected from the mesh cover 35 to cause disordered jitter, improving the coverage range when the brush bundle 38 sweeps the ash, and the air flow can cooperate with the brush bundle 38 to increase the sweeping force of the floating ash on the surface of the aggregates, so that the floating ash on the surface of the aggregates can be more smoothly swept off, meeting the standard for aggregate secondary utilization; Regarding the crusher 4, refer to Figure 3 , the crusher 4 is installed at the bottom opening of the relay housing 31. The crusher 4 is a jaw crusher, which can crush the aggregates in the crushing chamber by moving the movable jaw plate closer to and away from the fixed jaw plate; Regarding the distributor 5, refer to Figure 3 , small - volume aggregates can be separately led out by the distributor 5, bypassing the crusher 4 and being separately collected, so that the aggregates that do not need to be crushed can avoid passing through the crusher 4, preventing fine aggregates from filling the gaps in large - volume aggregates and causing unnecessary obstacles to the movement of the movable jaw plate approaching the fixed jaw plate, providing sufficient displacement space for the operation of the movable jaw plate of the crusher 4, reducing the working intensity of the crusher 4. Because both over - sized and under - sized aggregates do not meet the requirements, it can also prevent fine aggregates with qualified volume from being re - crushed into smaller volume by being wrapped and squeezed by large - volume aggregates, improving the aggregate qualification rate. At the same time, the distributor 5 is connected to the bottom of the output hopper 2 - 27 to provide continuous negative - pressure suction. The negative - pressure suction can drain the fine aggregates to avoid their accumulation in the distributor 5 due to their small volume. And the negative - pressure suction can also drain the gas sprayed into the relay housing 31, so that the floating dust separated from the aggregates during the purging can be led out from the distributor 5, controlling the dust in the working space without additionally installing spraying equipment.

[0030] The working principle of this embodiment is as follows: At the feed box 1, the mixed aggregate is introduced into the cone bucket 11 from right to left. When it contacts the throwing roller 13, it is impacted and reversed to contact the liner 14. The large aggregate with lower hardness and the aggregate mass wrapped outside the steel bar will be broken into small pieces, forming a large volume difference with the large-volume aggregate that cannot be broken. Mixed aggregates with obvious volume differences enter the classification box 2 from the feed box 1. Aggregates with large volumes will be supported by the suspension frame 24 and move leftward along the top surface of the suspension frame 24 until they enter the output bucket 1 26. Aggregates with small volumes will pass through the wedge-shaped gap 29 and move downward at the output bucket 27, thus completing the smooth diversion between aggregates of different volumes. The separated large-volume aggregates are made of recycled concrete from construction sites, which inevitably contain ferromagnetic debris such as steel bar heads and metal clamps that cannot be broken. Therefore, at the position of the screener 3, the electromagnet 36 that moves back and forth close to and away from the descending aggregates attracts and captures the ferromagnetic debris from the aggregates. In the process of separating the ferromagnetic debris, the brush bundle 38 is combined with the airflow to clean the dust on the surface of the aggregates, reduce the mud content of the aggregates, and ensure the quality of the secondary recycled aggregates. After the large-volume aggregate is cleaned, it will enter the crusher 4 and be crushed into a standard volume. The separated small-volume aggregate will pass through the crusher 4 under the negative pressure guidance of the distribution component 5, and be mixed with the aggregate crushed by the crusher 4 and directly collected to avoid waste of aggregate. The negative pressure guidance of the distribution component 5 can simultaneously drain the dust in the screen 3 and the soil entrained in the small-volume aggregate, and collect the dust separately.

[0031] In a further embodiment, in order to avoid aggregate splashing caused by the operation of the throwing roller 13, refer to Figure 4 A top cover 12 is installed on the upper part of the cone bucket 11, and the top cover 12 has a horizontally arranged main body, wherein a feeding distance is left between the right end of the top cover 12 and the top surface of the cone bucket 11, and the top cover 12 reduces the opening range of the entrance of the cone bucket 11, and the left end of the top cover 12 is bent and extended vertically downward, and a feeding gap is formed between the bottom surface of the left end of the top cover 12 and the top surface of the suspension frame 24, and a leveling piece 15 is installed on the bottom surface of the left end of the top cover 12. The leveling piece 15 is a plurality of strip-shaped hard bars. The top end of the leveling piece 15 is hinged on the top cover 12, and the lower end is a free end that can swing to the left and can be placed on the top of the aggregate moving to the left to control the stacking thickness of the aggregate and avoid uneven quantity during the aggregate feeding process. In addition, the leveling piece 15 can block the aggregate splashing to the left from the feeding gap, and cooperate with the top cover 12 above to avoid the aggregate from being thrown upward and left to prevent splashing.

[0032] In a further embodiment, most of the aggregates contacting the throwing roller 13 will be thrown to the right and right below, so the contact surface between the aggregate and the cone bucket 11 is strengthened in a targeted manner. Figure 2 and Figure 4The cone bucket 11 is located on the right side and lower right side of the throwing roller 13 and is provided with a reinforcement plate. The upper half of the reinforcement plate is vertical, and the lower half is inclined to the lower left. A reinforcement rib is provided on the right side of the reinforcement plate, which has strong impact resistance. The lining plate 14 covers the left side wall of the reinforcement plate to ensure the crushing effect. The lining plate 14 is installed on the right side wall of the vertical downward bend at the left end of the top cover 12, which can block the aggregates splashing upward and leftward, and reduce the damage caused by the impact of the aggregates on the top cover 12.

[0033] In a further embodiment, referring to Figure 4 The grading box 2 also includes a bearing plate 23, which is located directly below the throwing roller 13. The bearing plate 23 serves as a relay and adopts an integral plate structure. A horizontal reinforcement strip is arranged on the top surface. The reinforcement strip extends horizontally from left to right and does not block the aggregate from moving smoothly to the left. The aggregate with impact potential energy is received near the throwing roller 13. The right end of the bearing plate 23 is fixedly connected to the right inner wall of the main frame 22 to improve the installation strength of the bearing plate 23. The suspension frame 24 is arranged at the left end of the bearing plate 23, away from the position directly below the throwing roller 13, to prevent the suspension frame 24 from being directly impacted by high-speed aggregate and causing deformation. At the same time, the left end of the bearing plate 23 is tilted downward to achieve uniform conveying of the aggregate to the left, so that the aggregate can be smoothly screened when it reaches the position of the suspension frame 24.

[0034] In a further embodiment, the specific configuration of the suspension frame 24 is disclosed, referring to Figure 5 The suspension frame 24 is an isosceles trapezoidal plate that is narrow on the left and wide on the right, and is arranged equidistantly in front and back. A wedge-shaped gap 29 that is wide on the left and narrow on the right is formed between adjacent suspension frames 24. Among them, the suspension frames 24 are horizontally arranged in multiple groups, and the left end of the suspension frame 24 is tilted downward. The height of the suspension frame 24 on the left is lower than the height of the suspension frame 24 on the right. The suspension frame 24 is arranged in multiple groups, and the height gradually decreases from right to left, so that the aggregate can slide smoothly to the left. At the same time, a support 28 is installed at the left end of the suspension frame 24. The support 28 includes a square tube extending horizontally in the front and back, and on the square tube A plurality of inverted triangular fins are installed, the right end of the suspension frame 24 is fixed on the square tube, and the left end of the suspension frame 24 is fixed on the top of the fin, and the support 28 is fixedly connected to the inner wall of the main frame 22. The two ends of the suspension frame 24 are supported by the support 28 to ensure the structural strength of the suspension frame 24. The setting of the fins forms a stepped drop between adjacent suspension frames 24. When the aggregate moves to the left, it will fall and roll between the two adjacent groups of suspension frames 24. The upper aggregate can first contact the suspension frame 24 when rolling, and smoothly enter the wedge-shaped gap 29, thereby improving the screening effect.

[0035] In a further embodiment, referring to Figure 4 and Figure 5, a screen plate 25 is installed between the top end of the discharge hopper II 27 and the bottom end of the main frame 22. The screen plate 25 can perform secondary screening on the aggregate passing through the wedge-shaped slit 29, intercepting the aggregate with a relatively large volume but a special shape that can pass through the wedge-shaped slit 29 (such as rod-shaped aggregate, flake-shaped aggregate, etc., with a relatively small cross-section but a relatively large overall volume), so that it will not directly bypass the crusher 4 and be collected, ensuring the uniformity of the aggregate size. Moreover, the suspension bracket 24 and the screen plate 25 are used in combination. The suspension bracket 24 with relatively high structural strength can bear the large-volume aggregate, avoiding the screen plate 25 with relatively low structural strength due to the dense holes being directly impacted and deformed or even broken. In addition, the left end of the screen plate 25 inclines downward, and the discharge hopper I 26 is installed at the lowest position of the left end of the screen plate 25, enabling the intercepted aggregate to smoothly enter the discharge hopper I 26 without staying at the position of the screen plate 25, ensuring the screening effect and the smooth progress of screening.

[0036] In a further embodiment, when the electromagnet 36 continuously adsorbs and screens ferromagnetic impurities, referring to Figure 7 and Figure 8 , a tooth groove 322 is provided on the top surface of the turntable 32. A position sensor 37 is installed at the position of the relay housing 31 opposite to the tooth groove 322. The position sensor 37 adopts a Hall sensor, which can calculate the number of tooth grooves 322 passing through the position of the position sensor 37 and calculate the rotation angle of the turntable 32. The turntable 32 is designed with the left side higher than the right side. As the turntable 32 rotates, the vertical cylinder 34 on the right side is moved leftward and lifted. The electromagnet 36 is arranged on the side of the vertical cylinder 34 away from the axis of the turntable 32. The electromagnet 36 on the surface of the vertical cylinder 34 at the lowest position can directly contact the descending aggregate without being blocked by the vertical cylinder 34. Moreover, as the vertical cylinder 34 rotates with the turntable 32, it gradually moves away from the range of the descending aggregate until it is lifted to the highest position and is at the leftmost end of the turntable 32. By arranging multiple vertical cylinders 34 at equal intervals and determining the rotation angle of the turntable 32 corresponding to each vertical cylinder 34, when each vertical cylinder 34 rotates to the leftmost end of the turntable 32, the electromagnet 36 on the vertical cylinder 34 can be powered off, causing the ferromagnetic impurities to fall. A receiving hopper 39 is provided below the leftmost vertical cylinder 34 on the left side of the relay housing 31. The receiving hopper 39 is arranged with the left side lower than the right side. The fallen ferromagnetic impurities can be collected by the receiving hopper 39 and conveyed separately to the left. After the electromagnet 36 on the vertical cylinder 34 passes through the highest point of the turntable 32, it is powered on again to perform the next contact magnetic separation, ensuring the stable long-term magnetic separation work of the electromagnet 36.

[0037] In a further embodiment, to ensure the stability of the vertical cylinder 34 during long-term use, referring to Figure 7The turntable 32 has a connecting cavity 321 built in, and the top opening of the connecting cavity 321 is connected to an air supply pump through a rotating joint. A universal tube 33 is installed between the turntable 32 and the vertical cylinder 34. The connecting cavity 321 is connected to the vertical cylinder 34 through the universal tube 33, so that the vertical cylinder 34 is in a high-pressure state, and the universal tube 33 is made of rubber or other flexible materials, that is, the universal tube 33 can be bent, so that the vertical cylinder 34 can remain vertical under the action of gravity without external force. In this way, when the vertical cylinder 34 is at the highest point on the left side of the turntable 32, the other The vertical cylinder 34 and the brush bundle 38 can block the descending aggregate on the right side and prevent the descending aggregate from entering the range above the receiving bucket 39, so that the vertical cylinder 34 is in a vertical state. At this time, the electromagnet 36 is powered off, and the adsorbed ferromagnetic debris can fall vertically, ensuring that the receiving bucket 39 can stably collect the falling ferromagnetic debris. In addition, when the vertical cylinder 34 is in the low point range on the right side of the turntable 32, large pieces of descending aggregate can directly contact the vertical cylinder 34. When the vertical cylinder 34 is impacted, the universal tube 33 can be bent by force, so that the vertical cylinder 34 swings to reduce impact damage.

[0038] In a further embodiment, in order to adapt to different aggregate states, refer to Figure 9 The distribution member 5 includes a receiving shell 51, which is connected to the output bucket 27 through a flexible curtain, and does not affect the vibration of the output bucket 27 with the main frame 22. The receiving shell 51 receives the fine aggregate and soil falling from the output bucket 27. Among them, a three-way shell 52 is installed at the lower end of the receiving shell 51, and the three-way shell 52 has two outlets. A reflux shell 54 is installed at the left part of the bottom end of the three-way shell 52, and a suction shell 55 is installed at the right part of the bottom end of the three-way shell 52. The sieve plate 53 is overlapped at the top opening position of the suction shell 55 to prevent aggregate from directly entering the suction shell 55, but it will not block soil or dust. The sieve plate 53 separates the soil and aggregate again, and uses the reflux shell 54 to make Aggregates are returned to the collecting box 6 to reduce unnecessary waste of aggregates. The suction shell 55 is externally connected to a negative pressure device so that the gas at the relay shell 31 is attracted by the suction shell 55, thereby reducing dust and preventing mud from adhering to and accumulating in the distribution member 5. A rotating shaft 56 is rotatably installed on the lower inner part of the three-way shell 52, and a sieve plate 53 is installed on the circumferential side wall of the rotating shaft 56. In an aggregate crushing environment with excessive mud content, the sieve plate 53 can be rotated to block the top opening of the reflux shell 54, so that the upper mud and airflow are uniformly discharged only through the suction shell 55, and part of the aggregate entering the distribution member 5 is abandoned, so as to ensure the function of suppressing dust as much as possible and flexibly adapt to different aggregate environments.

[0039] In a further embodiment, in order to ensure the stability of the position of the sieve plate 53 under high-speed airflow, refer to Figure 9 and Figure 10, a first stop bar 57 and a second stop bar 58 are installed on the vertical side wall of the three-way housing 52. The first stop bar 57 is perpendicular to the extension direction of the suction housing 55, and at the same time, the second stop bar 58 is perpendicular to the extension direction of the return housing 54. When the sieve plate 53 swings and changes positions, the first stop bar 57 and the second stop bar 58 adopt a rectangular structure with straight side walls, which have a large contact area with the straight side walls of the sieve plate 53 and stably support the sieve plate 53. During use, the sieve plate 53 overlaps at the first stop bar 57 to block the top end of the suction housing 55 for separating aggregate and soil, and the sieve plate 53 overlaps at the second stop bar 58 to block the top end of the return housing 54 for concentrating the drainage of a large amount of soil in a short time.

[0040] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A crushing device for solid waste treatment, characterized in that, Comprising: A feed box (1), the feed box (1) includes a conical hopper (11) with an inlet provided at the upper part of one side, a throwing roller (13) rotating clockwise is arranged at the inlet of the conical hopper (11), and a lining plate (14) is installed at the vertical side wall of the conical hopper (11) opposite to the throwing roller (13); A grading box (2), the grading box (2) includes a main frame (22) placed below the conical hopper (11), a suspension bracket (24) is installed in the middle of the inner side of the main frame (22), a wedge-shaped gap (29) is provided between the suspension brackets (24), an output hopper one (26) is provided at the discharge end of the main frame (22) where the suspension bracket (24) is located, and an output hopper two (27) is provided below the suspension bracket (24) of the main frame (22); A sieve (3), the sieve (3) includes a relay shell (31) provided downstream of the output hopper one (26), a turntable (32) is installed at the top of the relay shell (31), a vertical cylinder (34) is connected and installed at the bottom end of the turntable (32), the turntable (32) provides high-pressure air flow for the vertical cylinder (34), an electromagnet (36) and a mesh cover (35) are installed on the circumferential outer wall of the vertical cylinder (34), and a brush bundle (38) is installed between the bottom end of the turntable (32) and the rotation center line and the vertical cylinder (34); A crusher (4), the crusher (4) is installed at the opening at the bottom end of the relay shell (31); A distributor (5), the distributor (5) is connected to the bottom end of the output hopper two (27) to provide continuous negative pressure suction, and the distributor (5) includes a tee shell (52), and a sieve plate (53) is installed inside the tee shell (52).

2. The crushing device for solid waste treatment according to claim 1, characterized in that, A top cover (12) is installed at the upper part of the conical hopper (11), there is a feeding distance between the end of the top cover (12) close to the inlet of the conical hopper (11) and the top surface of the conical hopper (11), the end of the top cover (12) far from the inlet of the conical hopper (11) bends vertically downward and extends, a material passing gap is formed between the bottom surface of the downward-bent end of the top cover (12) and the top surface of the suspension bracket (24), and a leveling part (15) is installed on the bottom surface of the left end of the top cover (12).

3. The crushing device for solid waste treatment according to claim 2, characterized in that, The vertical side wall of the conical hopper (11) opposite to the throwing roller (13) is set as a reinforcing plate inclined downward to the left at the lower end, the lining plate (14) covers the side wall of the reinforcing plate, and a lining plate (14) is installed on the vertical inner wall of the downward-bent end of the top cover (12).

4. The crushing device for solid waste treatment according to claim 1, characterized in that, The grading box (2) further includes a bearing plate (23), the bearing plate (23) is located directly below the throwing roller (13), the bearing plate (23) is fixedly connected to the inner wall of the main frame (22), the end of the bearing plate (23) extends downward obliquely, and the suspension bracket (24) is arranged at the lowest position of the bearing plate (23).

5. The crushing device for solid waste treatment according to claim 4, wherein, Multiple groups of the suspension brackets (24) are arranged horizontally, the ends of the suspension brackets (24) extend downward obliquely, the heights of adjacent suspension brackets (24) decrease in a stepped manner, and a support (28) is installed below the suspension brackets (24), and the support (28) is fixedly connected to the inner wall of the main frame (22).

6. The crushing device for solid waste treatment according to claim 1, characterized in that, A mesh plate (25) is installed between the top end of the output hopper II (27) and the bottom end of the main frame (22). One end of the mesh plate (25) close to the output hopper I (26) is inclined downward, and the output hopper I (26) is installed at the lowest position of the mesh plate (25).

7. The crushing device for solid waste treatment according to claim 1, characterized in that, A tooth groove (322) is provided on the top surface of the turntable (32). A position sensor (37) is installed at a position of the relay housing (31) facing the tooth groove (322). The turntable (32) is inclined downward at a position close to the output hopper I (26). The electromagnet (36) is arranged on the side of the vertical cylinder (34) away from the axis of the turntable (32), and a receiving hopper (39) is provided below the vertical cylinder (34) at the highest point of the turntable (32).

8. The crushing device for solid waste treatment according to claim 7, characterized in that, A communication cavity (321) is built in the turntable (32). A universal joint pipe (33) is installed between the turntable (32) and the vertical cylinder (34). The communication cavity (321) is communicated with the vertical cylinder (34) through the universal joint pipe (33).

9. The crushing device for solid waste treatment according to claim 1, wherein, The distributor (5) further includes a receiving housing (51). The receiving housing (51) is docked with the output hopper II (27). A rotating shaft (56) is rotatably installed at the lower part inside the three-way housing (52). The sieve plate (53) is installed on the circumferential side wall of the rotating shaft (56). One outlet of the three-way housing (52) is provided with a return flow housing (54), and the other outlet of the three-way housing (52) is provided with an attracting housing (55). A collecting box (6) is installed at the bottom outlet position of the crusher (4), and the lower end of the return flow housing (54) extends into the collecting box (6).

10. The crushing device for solid waste treatment according to claim 1, characterized in that, A first stop bar (57) and a second stop bar (58) are installed on the vertical side wall of the three-way housing (52). The sieve plate (53) is lapped at the first stop bar (57) to block the top end of the attracting housing (55), and the sieve plate (53) is lapped at the second stop bar (58) to block the top end of the return flow housing (54).

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