CN116274281A

CN116274281A - Building waste assorted material recycling equipment

Info

Publication number: CN116274281A
Application number: CN202310353312.XA
Authority: CN
Inventors: 张东升; 李俊; 管晶晶; 王亮
Original assignee: Yangzhou Yanggong Machinery Co ltd
Current assignee: Yangzhou Yanggong Machinery Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-23
Anticipated expiration: 2043-04-04
Also published as: CN116274281B

Abstract

The invention relates to the technical field of recycling of building waste, in particular to recycling equipment of building waste mixed materials, which comprises a support frame, wherein a primary crushing box is arranged on the support frame, and a secondary crushing box is arranged on the lower side of the primary crushing box; the primary crushing box is communicated with the secondary crushing box; the upper side of the primary crushing box is provided with a feed hopper, and the inner side of the primary crushing box is provided with a first crushing device; the lower side of the first crushing device is provided with a filtering component; a first conveying mechanism for conveying materials on the upper side of the filter assembly is arranged on the lower side of the filter assembly, and a second conveying mechanism for conveying the dropped materials is arranged on the lower side of the first conveying mechanism; a second crushing device is arranged in the secondary crushing box and positioned at the discharge end of the filtering component; the second crushing box is internally provided with a third crushing device, and the bottom of the second crushing box is provided with a discharging conveying mechanism. The material is crushed in a multistage crushing mode, so that larger abrasion of crushing rollers is avoided, and the service life of equipment is prolonged.

Description

Building waste assorted material recycling equipment

Technical Field

The invention relates to the technical field of recycling of building waste, in particular to recycling equipment for mixed materials of building waste.

Background

Along with the continuous construction and development of cities, a large amount of concrete raw material resources are required, and correspondingly, a large amount of building wastes are generated in the continuous increasing process of buildings. Therefore, in the new building process, the generated building waste needs to be recycled.

When the construction waste is recycled, the construction waste is firstly classified, and metal, wood and concrete blocks are respectively processed, so that waste is finally changed into valuable.

In the prior art, when concrete blocks are recycled, the concrete blocks are crushed by a crushing device to form fine particles. However, in the prior art, the grinding is generally performed once, and the grinding roller is crushed into smaller particles by the primary grinding, so that the grinding roller is greatly worn during long-term use, and the grinding effect is poor.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides the recycling equipment for the building waste mixed materials, which pulverizes the materials in a multistage pulverizing mode, avoids larger abrasion of a pulverizing roller and prolongs the service life of the equipment.

(II) technical scheme

In order to achieve the above purpose, an embodiment of the present application provides a recycling device for building waste mixed materials, including a support frame, a primary crushing box is arranged on the support frame, and a secondary crushing box is arranged at the lower side of the primary crushing box; the primary crushing box is communicated with the secondary crushing box; the upper side of the primary crushing box is provided with a feed hopper, and the inner side of the primary crushing box is provided with a first crushing device for crushing materials entering from the feed hopper for the first time; the lower side of the first crushing device is provided with a filtering component for filtering the materials after primary crushing; a first conveying mechanism for conveying the filtered materials on the upper side of the filter assembly is arranged on the lower side of the filter assembly, and a second conveying mechanism for conveying the materials falling from the filter assembly is arranged on the lower side of the first conveying mechanism; the first conveying mechanism conveys the materials on the filter assembly to the discharge end of the filter assembly; the second crushing device is arranged in the secondary crushing box and positioned at the discharge end of the filter assembly and used for crushing the material on the upper side of the filter assembly; a third crushing device is arranged in the secondary crushing box and positioned at the lower side of the second crushing device, and the discharge end of the second conveying mechanism is positioned at the upper side of the third crushing device; the bottom of the secondary crushing box and the lower side of the third crushing device are provided with a discharging and conveying mechanism.

Preferably, the filter assembly comprises a plurality of guide rings arranged in parallel, the guide rings are oblong in shape, and each guide ring is arranged in a vertical plane; a filtering gap is formed between the adjacent guide rings; a first mounting plate is arranged on one side of the discharging end and positioned on the lower side of the guide ring, the first mounting plate is connected with all the guide rings, and two ends of the first mounting plate are fixed with the secondary crushing box; a second mounting plate is arranged at one end, far away from the discharge end, of the guide ring, and two ends of the second mounting plate are fixed with the secondary crushing box; connecting plates are respectively arranged on one sides of the first mounting plate and the second mounting plate, which are close to the guide ring, and are fixedly connected with the guide ring; the first conveying mechanism is positioned in the guide rings, and the material on the upper side of the guide rings is pushed by the filtering gap.

Preferably, the guide ring is obliquely arranged, the guide ring is lower in height near one end of the discharge end, and higher in height far away from one end of the discharge end.

Preferably, the first conveying mechanism comprises a driving shaft and a driven shaft, wherein the driving shaft and the driven shaft are parallel to each other and are perpendicular to the plane of the guide ring; the two ends of the driving shaft and the driven shaft are respectively connected with the secondary crushing box in a rotating way, a first driving motor is arranged on the outer side of the secondary crushing box, and the first driving motor is connected with the driving shaft and drives the driving shaft to rotate; the driving shaft is positioned at one end of the guide ring, and the driven shaft is positioned at the other end of the guide ring; the two ends of the driving shaft are respectively provided with a first chain wheel; two ends of the driven shaft are respectively provided with a second chain wheel; the first chain wheel and the second chain wheel are positioned outside all the guide rings; a chain is arranged between the first chain wheel and the second chain wheel; the chain comprises a first chain and a second chain; the first chain and the second chain are respectively positioned at two ends of the driving shaft; a plurality of conveying columns are connected between the first chain and the second chain, and are arranged at intervals and equidistantly along the length direction of the first chain; the upper side of the conveying column is fixedly provided with a plurality of feeding wheels at intervals, and the conveying wheels are positioned in the filtering gaps and protrude out of the guide rings.

Preferably, a guide wheel is rotatably arranged on the conveying column and positioned between two adjacent feeding wheels; the circumference of the guide wheel is provided with a limit groove, and the limit groove is sleeved on the guide ring and is in sliding connection with the limit ring.

Preferably, a limiting ring is arranged on the inner side of each guide ring, and one side, away from the guide ring, of each guide wheel is embedded with the limiting ring through a limiting groove.

Preferably, the chain comprises chain shafts and chain sheets positioned between the chain shafts; the chain piece is close to the one side face of guide ring is formed with the backup pad, the both ends of carrying the post with the backup pad can dismantle and be connected.

Preferably, the second conveying mechanism and/or the discharge conveying mechanism comprises a first roller shaft and a second roller shaft; the outer sides of the first roll shaft and the second roll shaft are provided with conveyor belts; a supporting layer is arranged between the first roll shaft and the second roll shaft, and the upper surface of the conveyor belt is in contact with the supporting layer.

Preferably, the first crushing device comprises a first crushing roller, a second crushing roller and a first driving assembly, wherein the first crushing roller, the second crushing roller and the first driving assembly are arranged at intervals and drive the first crushing roller and the second crushing roller to rotate; the second crushing device comprises a third crushing roller, a fourth crushing roller and a second driving assembly, wherein the third crushing roller, the fourth crushing roller and the second driving assembly are arranged at intervals and drive the third crushing roller and the second crushing roller to rotate; the third crushing device comprises a fifth crushing roller, a sixth crushing roller and a third driving assembly, wherein the fifth crushing roller, the sixth crushing roller and the third driving assembly are arranged at intervals and drive the first crushing roller and the second crushing roller to rotate; the interval between the first crushing roller and the second crushing roller is larger than the gap between the third crushing roller and the fourth crushing roller, and the gap between the third crushing roller and the fourth crushing roller is larger than the gap between the fifth crushing roller and the sixth crushing roller.

(III) beneficial effects

The invention provides a recycling device for building waste mixed materials, which is characterized in that during working, materials to be processed are put into a first-stage crushing box through a feed hopper, the materials are crushed for the first time through a first crushing device, and the materials become smaller blocky and smaller particles after the first crushing. The materials after primary crushing are separated after passing through the filtering component, the larger blocky materials are conveyed to the second crushing device for secondary crushing, the materials after secondary crushing and the smaller materials are conveyed to the third crushing device for crushing together to form small particles, and finally the small particles are conveyed out through the discharging conveying mechanism. The material is crushed in a multistage crushing mode, so that larger abrasion of crushing rollers is avoided, and the service life of equipment is prolonged.

Drawings

FIG. 1 is a schematic structural view of a construction waste mixed material recycling device according to the present invention;

FIG. 2 is a schematic view of a protruding filter element in a construction waste tramp material recycling apparatus according to the present invention;

FIG. 3 is a schematic view showing the structure of a protruding chain in a construction waste mixed material recycling apparatus according to the present invention;

FIG. 4 is a schematic view showing the relationship between a protruding guide wheel and a limiting ring in a construction waste mixed material recycling device according to the present invention;

FIG. 5 is a schematic view showing a first protruding conveying mechanism in a construction waste mixed material recycling apparatus according to the present invention;

fig. 6 is a schematic view showing a protruding second conveying mechanism in the construction waste mixed material recycling apparatus of the present invention.

The reference numerals in the drawings:

100. a support frame; 110. a primary pulverizing box; 120. a secondary crushing box; 130. a feed hopper; 200. a first pulverizing device; 210. a first pulverizing roller; 220. a second pulverizing roller; 300. a filter assembly; 310. a guide ring; 320. a filtering gap; 330. a first mounting plate; 340. a second mounting plate; 350. a connecting plate; 400. a first conveying mechanism; 410. a driving shaft; 420. a driven shaft; 440. a first sprocket; 450. a second sprocket; 460. a chain; 461. a first chain; 462. a second chain; 463. a chain shaft; 464. a chain piece; 465. a support plate; 470. a transport column; 471. a feeding wheel; 472. a guide wheel; 4721. a limit groove; 480. a limiting ring; 500. a second conveying mechanism; 510. a first roller shaft; 520. a second roller shaft; 530. a conveyor belt; 540. a support layer; 600. A second pulverizing device; 610. a third pulverizing roller; 620. a fourth pulverizing roller; 700. a third pulverizing device; 710. a fifth pulverizing roller; 720. a sixth pulverizing roller; 800. and a discharging and conveying mechanism.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

The invention provides a recycling device for building waste mixed materials, referring to fig. 1-6, which comprises a support frame 100, wherein a primary crushing box 110 is arranged on the support frame 100, and a secondary crushing box 120 is arranged on the lower side of the crushing box; the primary pulverizing tank 110 communicates with the secondary pulverizing tank 120; a feed hopper 130 is arranged on the upper side of the primary crushing box 110, and a first crushing device 200 for crushing materials entering the feed hopper 130 for the first time is arranged on the inner side of the primary crushing box 110; a filter assembly 300 for filtering the primarily pulverized material is provided at the lower side of the first pulverizing apparatus 200; a first conveying mechanism 400 for conveying the filtered material on the upper side of the filter assembly 300 is provided on the lower side of the filter assembly 300. A second conveying mechanism 500 for conveying the material dropped from the filter assembly 300 is provided at the lower side of the first conveying mechanism 400; the first conveying mechanism 400 conveys the material on the filter assembly 300 to the discharge end of the filter assembly 300; a second crushing device 600 for crushing the material on the upper side of the filter assembly 300 is arranged in the secondary crushing box 120 and positioned at the discharge end of the filter assembly 300; a third crushing device 700 is arranged in the secondary crushing box 120 and positioned at the lower side of the second crushing device 600, and the discharge end of the second conveying mechanism 500 is positioned at the upper side of the third crushing device 700; a discharge conveyor 800 is provided at the bottom of the secondary crushing box 120 and below the third crushing device 700. In operation, the material to be processed is placed into the primary crushing box from the feed hopper 130, and is crushed for the first time by the first crushing device 200, and after the first crushing, the material becomes smaller blocks and smaller particles. The primary crushed material is separated after passing through the filter assembly 300, the larger block material is conveyed to the second crushing device 600 for secondary crushing, the secondary crushed material and the smaller material are conveyed to the third crushing device 700 for crushing together to form small particles, and finally the small particles are conveyed out through the discharging conveying mechanism 800.

The filter assembly 300 includes a plurality of guide rings 310 disposed in parallel, wherein the guide rings 310 are oblong in shape, and each guide ring 310 is disposed in a vertical plane; a filtering gap 320 is formed between adjacent guide rings 310.

A first mounting plate 330 is arranged at the lower side of the guide ring 310 and at one side of the discharge end, the first mounting plate 330 is connected with all the guide rings 310, and two ends of the first mounting plate are fixed with the secondary crushing box 120; the guide ring 310 is provided with a second mounting plate 340 at one end far away from the discharge end, and two ends of the second mounting plate 340 are fixed with the secondary crushing box 120; the first mounting plate 330 and the second mounting plate 340 are respectively provided with a connecting plate 350 at one side close to the guide ring 310, and the connecting plates 350 are fixedly connected with the guide ring 310; the plurality of guide rings 310 are fixed and supported by the first and second mounting

plates

330 and 340, and in use, the once crushed material is separated on the plurality of guide rings 310.

Wherein, the position of the first mounting plate 330 does not affect the positions of the second crushing device 600 and the filter assembly 300, and the material can smoothly enter the second crushing device 600 for crushing by the tail end of the guide ring 310. Meanwhile, the first conveying mechanism 400 does not affect the conveying of the material on the wire loop due to the arranged connecting plate 350.

The guide ring 310 is obliquely arranged, one end of the guide ring 310 close to the discharge end is lower in height, and one end far away from the discharge end is higher in height. By providing the guide ring 310 obliquely, after primary crushing, most of the material automatically slides on the wire ring into the second crushing device 600, and a small part of the material may be caught on the wire ring. The material is pushed by the first conveyor 400 to avoid accumulation on the wire loop.

Specifically, the first conveying mechanism 400 is located in the plurality of guide rings 310, and pushes the material on the upper side of the guide rings 310 by the filter gap 320.

The first conveying mechanism 400 comprises a driving shaft 410 and a driven shaft 420, wherein the driving shaft 410 and the driven shaft 420 are parallel to each other and are perpendicular to the plane where the guide ring 310 is located; the two ends of the driving shaft 410 and the driven shaft 420 are respectively connected with the secondary crushing box 120 in a rotating way, a first driving motor is arranged on the outer side of the secondary crushing box 120, and the first driving motor is connected with the driving shaft 410 and drives the driving shaft 410 to rotate.

The driving shaft 410 is positioned at one end in the guide ring 310, and the driven shaft 420 is positioned at the other end in the guide ring 310; the driving shaft 410 is provided at both ends thereof with first sprockets 440, respectively; the two ends of the driven shaft 420 are respectively provided with a second sprocket 450; the first sprocket 440 and the second sprocket 450 are located outside all guide rings 310; a chain 460 is disposed between the first sprocket 440 and the second sprocket 450.

The chain 460 includes a first chain 461460 and a second chain 462460; the first chain 461460 and the second chain 462460 are respectively positioned at two ends of the driving shaft 410; a plurality of conveying columns 470 are connected between the first chain 461460 and the second chain 462460, and the conveying columns 470 are arranged at intervals and equidistantly along the length direction of the first chain 461460.

A plurality of feeding wheels 471 are fixedly arranged on the upper side of the conveying column 470 at intervals, are positioned in the filtering gap 320 and protrude out of the guide ring 310. During the transmission of the chain 460, the feeding wheel 471 is driven by the conveying shaft to move, and the feeding wheel 471 pushes the material through the filtering gap 320 during the movement.

A guide wheel 472 is rotatably arranged on the conveying column 470 and positioned between two adjacent feeding wheels 471; the circumferential surface of the guide wheel 472 is provided with a limit groove 4721, and the limit groove 4721 is sleeved on the guide ring 310 and is in sliding connection with the limit ring 480. A limiting ring 480 is arranged on the inner side of each guide ring 310, and one side of the guide wheel 472 away from the guide ring 310 is embedded with the limiting ring 480 through a limiting groove 4721. By this arrangement, a certain limit can be formed on the conveying column 470, and the load bearing pressure of the chain 460 can be reduced. Meanwhile, the feeding wheel 471 is ensured to be capable of protruding from the filtering gap 320 at any time, and then materials can be stably conveyed.

The chain 460 includes chain shafts 463 and chain pieces 464 located between the chain shafts 463; the chain 464 has a support plate 465 formed near one side of the guide ring 310, and both ends of the conveying column 470 are detachably connected to the support plate 465. Specifically, the dismounting can be realized through a bolt fixing mode.

The second conveyor 500 and/or the outfeed conveyor 800 includes a first roller 510 and a second roller 520; the outer sides of the first roller shaft 510 and the second roller shaft 520 are provided with a conveyor 530; a supporting layer 540 is provided between the first roller 510 and the second roller 520, and an upper surface of the conveyor 530 is in contact with the supporting layer 540. A working motor is provided at one end of the first roller 510 or the second roller 520, and the first roller 510 or the second roller 520 is controlled to rotate by the working motor. During the rotation, the material is transported.

The first crushing device 200 includes a first crushing roller 210, a second crushing roller 220, and a first driving assembly for driving the first crushing roller 210 and the second crushing roller 220 to rotate, which are arranged at intervals.

The second crushing device 600 includes a third crushing roller 610, a fourth crushing roller 620, and a second driving assembly for driving the third crushing roller 610 and the second crushing roller 220 to rotate, which are disposed at intervals.

The third crushing device 700 includes a fifth crushing roller 710, a sixth crushing roller 720, and a third driving assembly for driving the first crushing roller 210 and the second crushing roller 220 to rotate, which are disposed at intervals.

The interval between the first pulverizing roller 210 and the second pulverizing roller 220 is greater than the gap between the third pulverizing roller 610 and the fourth pulverizing roller 620, and the gap between the third pulverizing roller 610 and the fourth pulverizing roller 620 is greater than the gap between the fifth pulverizing roller 710 and the sixth pulverizing roller 720. Through this setting, can realize smashing step by step the material, reduce crushing roller's wearing and tearing volume, guarantee simultaneously to smash more thoroughly, equipment life is longer.

The first, second and third drive assemblies above may be geared. Specifically, the first pulverizing apparatus 200 is described as an example:

the first driving assembly includes a driving gear disposed at one end of the first crushing roller 210, and a driven gear disposed at one end of the second crushing roller 220, wherein the driving gear and the driven gear are disposed at the same side and engaged with each other, and a second driving motor is disposed on the driving gear or the first crushing roller 210.

In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," "rear," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Embodiments of the invention and features of the embodiments may be combined with each other without conflict.

The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The utility model provides a building waste assorted material regeneration and utilization equipment which characterized in that: the device comprises a support frame (100), wherein a primary crushing box (110) is arranged on the support frame (100), and a secondary crushing box (120) is arranged on the lower side of the primary crushing box (110); the primary crushing box (110) is communicated with the secondary crushing box (120);

a feed hopper (130) is arranged on the upper side of the primary crushing box (110), and a first crushing device (200) for crushing materials entering the feed hopper (130) for the first time is arranged on the inner side of the primary crushing box (110);

a filter assembly (300) for filtering the primarily crushed materials is arranged at the lower side of the first crushing device (200); a first conveying mechanism (400) for conveying the filtered material on the upper side of the filter assembly (300) is arranged on the lower side of the filter assembly (300),

a second conveying mechanism (500) for conveying the materials falling from the filtering assembly (300) is arranged at the lower side of the first conveying mechanism (400); the first conveying mechanism (400) conveys materials on the filter assembly (300) to a discharge end of the filter assembly (300);

a second crushing device (600) for crushing the material on the upper side of the filter assembly (300) is arranged in the secondary crushing box (120) and positioned at the discharge end of the filter assembly (300); a third crushing device (700) is arranged in the secondary crushing box (120) and positioned at the lower side of the second crushing device (600), and the discharge end of the second conveying mechanism (500) is positioned at the upper side of the third crushing device (700);

a discharging and conveying mechanism (800) is arranged at the bottom of the secondary crushing box (120) and positioned at the lower side of the third crushing device (700).

2. The construction waste mixed material recycling apparatus according to claim 1, wherein: the filter assembly (300) comprises a plurality of guide rings (310) arranged in parallel, wherein the guide rings (310) are oblong in shape, and each guide ring (310) is arranged in a vertical plane; a filtering gap (320) is formed between the adjacent guide rings (310);

a first mounting plate (330) is arranged on the lower side of the guide ring (310) and on one side of the discharge end, the first mounting plate (330) is connected with all the guide rings (310), and two ends of the first mounting plate are fixed with the secondary crushing box (120); a second mounting plate (340) is arranged at one end, far away from the discharge end, of the guide ring (310), and two ends of the second mounting plate (340) are fixed with the secondary crushing box (120); a connecting plate (350) is arranged on one side, close to the guide ring (310), of the first mounting plate (330) and the second mounting plate (340), and the connecting plate (350) is fixedly connected with the guide ring (310);

the first conveying mechanism (400) is positioned in the guide rings (310), and the material on the upper side of the guide rings (310) is pushed by the filter gap (320).

3. The construction waste mixed material recycling apparatus according to claim 2, wherein: the guide ring (310) is obliquely arranged, one end of the guide ring (310) close to the discharge end is lower in height, and one end of the guide ring far away from the discharge end is higher in height.

4. A construction waste admixture recycling apparatus according to claim 3, wherein: the first conveying mechanism (400) comprises a driving shaft (410) and a driven shaft (420), wherein the driving shaft (410) and the driven shaft (420) are parallel to each other and perpendicular to the plane of the guide ring (310); the two ends of the driving shaft (410) and the driven shaft (420) are respectively connected with the secondary crushing box (120) in a rotating way, a first driving motor is arranged outside the secondary crushing box (120), and is connected with the driving shaft (410) and drives the driving shaft (410) to rotate;

the driving shaft (410) is positioned at one end in the guide ring (310), and the driven shaft (420) is positioned at the other end in the guide ring (310); the two ends of the driving shaft (410) are respectively provided with a first chain wheel (440); two ends of the driven shaft (420) are respectively provided with a second chain wheel (450); the first sprocket (440) and the second sprocket (450) are located outside of all guide rings (310); a chain (460) is arranged between the first chain wheel (440) and the second chain wheel (450);

the chain (460) comprises a first chain (461) (460) and a second chain (462) (460); the first chain (461) (460) and the second chain (462) (460) are respectively positioned at two ends of the driving shaft (410);

a conveying column (470) is connected between the first chain (461) (460) and the second chain (462) (460), and a plurality of conveying columns (470) are arranged at intervals and equidistantly along the length direction of the first chain (461) (460);

a plurality of feeding wheels (471) are fixedly arranged on the upper side of the conveying column (470) at intervals, are positioned in the filtering gap (320) and protrude out of the guide ring (310).

5. The construction waste mixed material recycling apparatus according to claim 1, wherein: a guide wheel (472) is rotatably arranged on the conveying column (470) and positioned between two adjacent feeding wheels (471); the circumference of the guide wheel (472) is provided with a limit groove (4721), and the limit groove (4721) is sleeved on the guide ring (310) and is in sliding connection with the limit ring (480).

6. The construction waste mixed material recycling apparatus according to claim 1, wherein: and a limiting ring (480) is arranged on the inner side of each guide ring (310), and one side, far away from the guide ring (310), of each guide wheel (472) is embedded with the limiting ring (480) through a limiting groove (4721).

7. The construction waste mixed material recycling apparatus according to claim 1, wherein: the chain (460) comprises chain shafts (463) and chain sheets (464) positioned between the chain shafts (463); a supporting plate (465) is formed on one side of the chain piece (464) close to the guide ring (310), and two ends of the conveying column (470) are detachably connected with the supporting plate (465).

8. The construction waste mixed material recycling apparatus according to claim 1, wherein: the second conveying mechanism (500) and/or the discharge conveying mechanism (800) comprises a first roller shaft (510) and a second roller shaft (520);

a conveyor belt (530) is arranged outside the first roller shaft (510) and the second roller shaft (520); a support layer (540) is arranged between the first roller shaft (510) and the second roller shaft (520), and the upper surface of the conveyor belt (530) is in contact with the support layer (540).

9. The construction waste mixed material recycling apparatus according to claim 1, wherein: the first crushing device (200) comprises a first crushing roller (210), a second crushing roller (220) and a first driving assembly, wherein the first crushing roller (210) and the second crushing roller (220) are arranged at intervals, and the first driving assembly drives the first crushing roller (210) and the second crushing roller (220) to rotate;

the second crushing device (600) comprises a third crushing roller (610), a fourth crushing roller (620) and a second driving assembly, wherein the third crushing roller (610) and the fourth crushing roller (620) are arranged at intervals, and the second driving assembly drives the third crushing roller (610) and the second crushing roller (220) to rotate;

the third crushing device (700) comprises a fifth crushing roller (710), a sixth crushing roller (720) and a third driving assembly, wherein the fifth crushing roller (710) and the sixth crushing roller (720) are arranged at intervals, and the third driving assembly drives the first crushing roller (210) and the second crushing roller (220) to rotate;

the interval between the first crushing roller (210) and the second crushing roller (220) is larger than the gap between the third crushing roller (610) and the fourth crushing roller (620), and the gap between the third crushing roller (610) and the fourth crushing roller (620) is larger than the gap between the fifth crushing roller (710) and the sixth crushing roller (720).