CN117680263B

CN117680263B - Multistage crushing equipment for construction waste and operation method thereof

Info

Publication number: CN117680263B
Application number: CN202410156234.9A
Authority: CN
Inventors: 杨盛华; 牛利军; 张燕; 杨秋璇; 杨政东; 张涵宇; 杨秋桐
Original assignee: Taiyuan City Park Service Center
Current assignee: Taiyuan City Park Service Center
Priority date: 2024-02-04
Filing date: 2024-02-04
Publication date: 2024-04-12
Anticipated expiration: 2044-02-04
Also published as: CN117680263A

Abstract

The invention relates to the technical field of multi-stage crushing of garbage, in particular to a multi-stage crushing device of construction garbage and an operation method thereof, wherein the multi-stage crushing device of construction garbage comprises a feeding and conveying assembly for conveying the construction garbage to be crushed, a pre-crushing assembly for pre-crushing small-sized construction garbage, a primary crushing assembly for crushing middle-sized or large-sized construction garbage, a secondary crushing assembly for re-crushing the construction garbage treated by the primary crushing assembly, and a first fine crushing assembly for crushing the construction garbage crushed by the secondary crushing assembly.

Description

Multistage crushing equipment for construction waste and operation method thereof

Technical Field

The invention relates to the technical field of crushing equipment, in particular to multi-stage crushing equipment for construction waste and an operation method thereof.

Background

The resource utilization of the construction waste is an effective way for saving land and recycling resources in the urban development process, and has great significance for developing circular economy and resource-saving society.

At present, a large amount of construction waste is generated by reconstruction and extension of industrial concrete pavement and demolition of house buildings, and the construction waste comprises various concrete, reinforcing steel bars, masonry and the like;

in the prior art, the crushing and separating technology of the construction waste is time-consuming and labor-consuming, and the construction waste is scattered and dust is raised, so that great environmental pollution and resource waste are caused;

the crushing process of the construction waste such as concrete is mainly carried out by manual knocking, so that a great deal of labor cost is consumed by long-time operation, and finally, many enterprises abandon recycling of resources, and the environmental pollution and the resource loss are aggravated.

There is thus an urgent need to redesign a new construction waste multi-stage crushing apparatus and operating method thereof to solve the above-mentioned problems.

Disclosure of Invention

The invention provides a multi-stage crushing device for construction waste and an operation method thereof, which aim to solve the technical problems in the background technology.

The invention provides a construction waste multistage crushing device and an operation method thereof, wherein the construction waste multistage crushing device comprises a feeding and conveying component for conveying construction waste to be crushed, a pre-crushing component for pre-crushing small-sized construction waste, a first-stage crushing component for crushing middle-sized or large-sized construction waste, a second-stage crushing component for re-crushing the construction waste treated by the first-stage crushing component, a first fine crushing component for crushing the construction waste treated by the second-stage crushing component, a crushing and crushing component for crushing the construction waste treated by the first fine crushing component in a crushing manner, a classification and crushing component for classifying the construction waste treated by the crushing and crushing component, and a dust removing component for removing dust generated by processing the classification and crushing component.

Optionally, the material loading conveying subassembly includes material loading conveying support, material loading conveying drive roll, material loading conveying driven voller, material loading conveying transfer belt, material loading conveying motor support, material loading driving motor and material loading drive conveyer belt, material loading conveying drive roll rotates and connects material loading conveying support one end, material loading conveying driven voller rotates and connects the material loading conveying support other end, material loading conveying transfer belt rotates and connects between material loading conveying drive roll and the material loading conveying driven voller, material loading conveying motor support installs on the material loading conveying support, material loading driving motor installs on the material loading conveying motor support, material loading drive conveyer belt connects between material loading driving motor's output and the one end that material loading conveying drive roll stretched out the material loading conveying support.

Optionally, the pre-crushing assembly comprises a pre-crushing bracket, a pre-crushing main box body, a pre-crushing driving shaft, a pre-crushing driven shaft, a pre-crushing driving gear, a pre-crushing driven gear, a plurality of pre-crushing first cutting parts, a plurality of pre-crushing second cutting parts and a pre-crushing driving motor, wherein the pre-crushing bracket is arranged at one end of the feeding and conveying assembly, the pre-crushing main box body is arranged on the pre-crushing bracket, the pre-crushing driving shaft is rotationally connected in the pre-crushing main box body, the pre-crushing driven shaft is rotationally connected in the pre-crushing main box body, the pre-crushing driving gear is arranged at one end of the pre-crushing driving shaft extending out of the pre-crushing main box body, the pre-crushing driven gear is arranged at one end of the pre-crushing driven shaft extending out of the pre-crushing main box body, the pre-crushing driving gear is connected with the pre-crushing driven gear in an engaged manner, the plurality of pre-crushing first cutting parts are arranged on the pre-crushing driving shaft at equal intervals, the pre-crushing second cutting parts are arranged on the pre-crushing driven shaft at equal intervals, the pre-crushing driving motor is arranged on the pre-crushing bracket, and the output end of the pre-crushing driving motor is connected with the pre-crushing driving shaft; the pre-crushing first cutting part comprises a pre-crushing first cutting main body and a plurality of pre-crushing first cutting protrusions, the pre-crushing first cutting main body is arranged on a pre-crushing driving shaft, and the plurality of pre-crushing first cutting protrusions are arranged on the outer side of the pre-crushing first cutting part at equal angles; the pre-crushing second cutting part comprises a pre-crushing second cutting main body and a plurality of pre-crushing second cutting protrusions, the pre-crushing second cutting main body is arranged on a pre-crushing driven shaft, the plurality of pre-crushing second cutting protrusions are arranged on the outer side of the pre-crushing second cutting part at equal angles, and the pre-crushing second cutting protrusions and the pre-crushing first cutting protrusions face in the right opposite directions.

Optionally, the primary crushing assembly comprises a primary crushing main box body, a primary driving main shaft, at least one primary driving wheel, a plurality of primary linkage parts, a plurality of primary connecting rods, a plurality of primary hammering parts, a primary discharging rotating door and at least one primary driving air cylinder, wherein the primary crushing main box body is arranged on one side of the pre-crushing assembly, a primary feeding hole is formed in one side of the primary crushing main box body, the primary driving main shaft is rotationally connected in the primary crushing main box body, the primary driving wheel is arranged at one end of the primary driving main shaft extending out of the primary crushing main box body, the plurality of primary linkage parts are arranged on the primary driving main shaft, the plurality of primary connecting rods transversely penetrate through the primary linkage parts, the primary hammering parts are rotationally connected to the primary connecting rods, the primary discharging rotating door is rotationally connected to one side of the primary crushing main box body, the primary driving air cylinder is arranged on one side of the primary crushing main box body, and the output end of the primary driving air cylinder is connected with the primary discharging rotating door;

the primary hammering part comprises a hammering main body part and a hammer breaking piece, the hammering main body part is rotationally connected to the primary connecting rod, and the hammering breaking piece is arranged at one end of the hammering main body part far away from the primary connecting rod.

Optionally, the secondary crushing assembly comprises a secondary crushing bracket, a secondary crushing workbench, a secondary crushing supporting block, a secondary crushing first pressing plate, a secondary crushing rotating shaft, a secondary crushing rotating block, a secondary crushing second pressing plate, a secondary crushing driving wheel, a secondary crushing belt, a secondary crushing driven wheel and a secondary crushing driving motor; the secondary crushing support is arranged on one side of the primary crushing assembly, the secondary crushing workbench is arranged on the upper side of the secondary crushing support, the secondary crushing supporting block is rotationally connected in the secondary crushing workbench, the secondary crushing first pressing plate is arranged on one side of the secondary crushing supporting block, the secondary crushing rotating shaft is rotationally connected in the secondary crushing workbench, the secondary crushing rotating block is arranged on the secondary crushing rotating shaft, the secondary crushing second pressing plate is arranged on one side of the secondary crushing rotating block, the secondary crushing driving wheel is arranged at one end of the secondary crushing rotating shaft extending out of the secondary crushing workbench, the secondary crushing driven wheel is rotationally connected on one side of the secondary crushing workbench, the secondary crushing driving motor is arranged on the secondary crushing workbench, the output end of the secondary crushing driving motor is connected with the secondary crushing driven wheel, and the secondary crushing belt is arranged between the secondary crushing driving wheel and the secondary crushing driven wheel; a plurality of first extrusion grooves are formed in the second crushing first pressing plate, and a plurality of second extrusion grooves are formed in the second crushing second pressing plate.

Optionally, the first fine grinding assembly includes a first fine grinding collection box, a first fine grinding processing box, a first fine grinding feeding portion, a first fine grinding processing portion, a first fine grinding motor, a first fine grinding driving gear, a first fine grinding driven gear, a first fine grinding driving shaft, a plurality of first cutting blades, a plurality of second cutting blades and a first fine grinding separating tray; the first fine grinding collecting box is installed on one side of the secondary crushing assembly, the first fine grinding processing box is installed on the upper side of the first fine grinding collecting box, the first fine grinding feeding part is installed on the upper side of the first fine grinding processing box, the first fine grinding processing part is installed on the upper side of the first fine grinding processing box, the first fine grinding motor is installed in the first fine grinding processing part, the first fine grinding driving gear is connected with the output end of the first fine grinding motor, the first fine grinding driven gear is meshed with the first fine grinding driving gear and is connected with the first fine grinding driving gear, one end of the first fine grinding driving shaft is connected with the first fine grinding driven gear, the other end of the first fine grinding driving shaft extends into the first fine grinding processing box, a plurality of first cutting blades are installed at the center of the first fine grinding driving shaft, a plurality of second cutting blades are installed at one end of the first fine grinding driving shaft far away from the first fine grinding driven gear, and the first fine grinding separation material disc is detached and connected between the first fine grinding collecting box and the first fine grinding processing box.

Optionally, the extrusion crushing assembly includes extrusion crushing operation platform, extrusion crushing processing box, first extrusion driving cylinder, first extrusion crushing plate, second extrusion driving cylinder and second extrusion crushing plate, the extrusion crushing operation platform is installed on one side of the first fine crushing assembly, the extrusion crushing processing box is installed on the extrusion crushing operation platform, the first extrusion driving cylinder is installed on one side of the extrusion crushing operation platform, the first extrusion crushing plate is connected with the output end of the first extrusion driving cylinder, the first extrusion crushing plate faces one side of the extrusion crushing processing box, the second extrusion driving cylinder is installed on the other side of the extrusion crushing operation platform, the second extrusion crushing plate is connected with the output end of the second extrusion driving cylinder, and the second extrusion crushing plate faces the other side of the extrusion crushing processing box; the first extrusion crushing plate is provided with a transverse material passing hole and a longitudinal material passing hole, and the transverse material passing hole and the longitudinal material passing hole are mutually communicated.

Optionally, the classifying crushing assembly comprises a classifying crushing main body part, a classifying crushing first driving rod, a classifying crushing first driving blade, a classifying crushing sorting disc, a first material dividing frame, a second material dividing frame, a third material dividing frame, a classifying crushing connecting rod, a first material dividing limiting block, a second material dividing limiting block, a third material dividing limiting block, a classifying crushing second driving rod, a first crushing gear, a second crushing gear, a third crushing gear, a classifying crushing supporting plate, at least one classifying crushing first rotating rod, at least one classifying crushing first rotating disc, a plurality of diffusion plates, a secondary driven bevel gear, a secondary driving rod, a secondary driving bevel gear, a classifying crushing recovery box, a miniature blower, a classifying crushing motor, a classifying crushing first belt and a classifying crushing second belt;

The classifying crushing main body part is arranged on one side of the extruding crushing assembly, the classifying crushing first driving rod is rotationally connected in the classifying crushing main body part, the classifying crushing first driving blade is arranged on the classifying crushing first driving rod, the classifying crushing sorting disc is arranged on the outer side of the classifying crushing first driving blade, the first material distributing frame, the second material distributing frame and the third material distributing frame are sequentially arranged on the lower side of the classifying crushing sorting disc, the classifying crushing connecting rod is rotationally connected on the lower side of the first material distributing frame, the first material distributing limiting block is obliquely arranged between the lower side of the first material distributing frame and the classifying crushing connecting rod, the second material distributing limiting block is obliquely arranged between the lower side of the second material distributing frame and the classifying crushing connecting rod, the third material distributing limiting block is obliquely arranged between the lower side of the third material distributing frame and the classifying crushing connecting rod, the first crushing gear, the second crushing gear and the third crushing gear are sequentially connected to the second crushing driving rod in a rotating mode, a first crushing supporting plate is installed in a crushing main body part in a classifying mode, the first crushing driving rod is connected to the first crushing supporting plate in a rotating mode, the first crushing rotating plate is connected to the end part of the first crushing driving rod in a classifying mode, a plurality of diffusion plates are installed on the first crushing rotating plate in a classifying mode, a secondary driven bevel gear is installed on the first crushing rotating rod in a classifying mode, the secondary driving rod is connected to the main body part in a classifying mode, the secondary driving bevel gear is installed at the end part of the secondary driving rod, and the secondary driving bevel gear is meshed with the secondary driven bevel gear;

The classifying and crushing recovery box is arranged on the lower side of the classifying and crushing supporting plate, the miniature blower is arranged on one side of the classifying and crushing recovery box, the output end of the miniature blower extends into the classifying and crushing recovery box, one side of the classifying and crushing recovery box is provided with a classifying and crushing ash outlet, and the lower side of the classifying and crushing recovery box is provided with a classifying and crushing discharge outlet;

the classifying crushing motor is arranged on one side of the classifying crushing main body part, the output end of the classifying crushing motor is connected with the classifying crushing second driving rod, the classifying crushing first belt is arranged between the classifying crushing first driving rod and the classifying crushing second driving rod, and the classifying crushing second belt is arranged between the classifying crushing second driving rod and the secondary driving rod;

the classifying crushing sorting disc comprises a first classifying crushing main body plate, a second classifying crushing main body plate and a plurality of classifying crushing limiting bars, wherein the first classifying crushing main body plate and the second classifying crushing main body plate are all installed on the outer side of a classifying crushing first driving blade, the plurality of classifying crushing limiting bars are installed between the first classifying crushing main body plate and the second classifying crushing main body plate, and the plurality of classifying crushing limiting bars are of arc-shaped structures.

Optionally, the dust removal subassembly includes dust removal collecting tank, dust removal air exhauster, dust removal inlet portion and dust removal ash discharge mouth, and dust removal collecting tank installs in broken subassembly one side in grades, and the dust removal air exhauster is installed in dust removal collecting tank upside, and dust removal inlet portion one end is connected with the dust removal air exhauster, and dust removal ash discharge mouth is installed at dust removal collecting tank lateral wall.

Optionally, the invention also provides an operation method of the multi-stage crushing equipment for the construction waste, which comprises the following steps: s1, feeding construction waste to be crushed, and placing the construction waste to be crushed in a feeding conveying assembly for conveying; s2, pre-crushing treatment, wherein when the small-sized construction waste passes through the pre-crushing assembly, the pre-crushing assembly performs pre-crushing action on the construction waste; s3, carrying out primary crushing treatment, namely enabling the construction waste to pass through a primary crushing assembly, and carrying out primary crushing action on the construction waste by the primary crushing assembly; s4, carrying out secondary crushing treatment, namely enabling the construction waste to pass through a secondary crushing assembly, and carrying out secondary crushing action on the construction waste by the secondary crushing assembly; s5, fine crushing treatment, namely, the construction waste treated in the step S4 enters a first fine crushing assembly, and the first fine crushing assembly performs fine crushing action on the construction waste; s6, extrusion crushing treatment, namely, the construction waste passes through an extrusion crushing assembly, and the extrusion crushing assembly performs extrusion crushing action on the construction waste; s7, classifying and crushing the construction waste, wherein the construction waste passes through a classifying and crushing assembly, and the classifying and crushing assembly performs classifying and crushing actions on the construction waste; s8, dust removal treatment, wherein the dust removal component removes dust generated by the operation of the classification crushing component.

The beneficial effects of the invention are as follows:

the construction waste multistage crushing equipment comprises a feeding conveying component for conveying construction waste to be crushed, a pre-crushing component for pre-crushing small-sized construction waste, a first-stage crushing component for crushing middle-sized or large-sized construction waste, a second-stage crushing component for re-crushing the construction waste treated by the first-stage crushing component, a first fine crushing component for crushing the construction waste treated by the second-stage crushing component, a crushing component for crushing the construction waste treated by the first fine crushing component, a classification crushing component for classifying the construction waste treated by the crushing component, and a dust removing component for removing dust generated by processing of the classification crushing component, wherein the pre-crushing component is arranged at the end part of the feeding conveying component.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic workflow diagram of a multi-stage crushing plant for construction waste according to the present invention;

fig. 2 is a schematic structural view of a first view angle of a feeding and conveying assembly of a multi-stage construction waste crushing apparatus according to the present invention;

FIG. 3 is an enlarged partial view of area A of FIG. 2;

fig. 4 is a schematic structural view of a second view angle of a feeding conveyor assembly of a multi-stage construction waste crushing apparatus according to the present invention;

FIG. 5 is an enlarged partial view of region B of FIG. 4;

fig. 6 is a schematic structural view of a first view of a primary crushing assembly of a multi-stage crushing plant for construction waste according to the present invention;

fig. 7 is a schematic structural view of a second view of a primary crushing assembly of a multi-stage crushing plant for construction waste according to the present invention;

fig. 8 is a schematic structural view of a third view angle of a primary crushing assembly of a multi-stage crushing apparatus for construction waste according to the present invention;

FIG. 9 is an enlarged partial view of region C of FIG. 8;

fig. 10 is a schematic structural view of a first view of a secondary crushing assembly of a multi-stage crushing plant for construction waste according to the present invention;

fig. 11 is a schematic structural view of a second view angle of a secondary crushing assembly of a construction waste multistage crushing apparatus provided by the present invention;

fig. 12 is a schematic structural view of a first view angle of a first fine crushing assembly of a multi-stage crushing apparatus for construction waste according to the present invention;

fig. 13 is a schematic structural view of a second view angle of a first fine crushing assembly of a multi-stage crushing apparatus for construction waste according to the present invention;

fig. 14 is a schematic view of a structure of a first view angle of an extrusion crushing assembly of a multi-stage crushing apparatus for construction waste according to the present invention;

fig. 15 is a schematic structural view of a second view of an extrusion crushing assembly of a multi-stage crushing apparatus for construction waste according to the present invention;

fig. 16 is a schematic structural view of a first crushing plate of the multi-stage crushing apparatus for construction waste according to the present invention;

fig. 17 is a schematic view of a first view of a classification assembly of a construction waste multistage crushing apparatus according to the present invention;

fig. 18 is a schematic structural view of a second view of a classification crushing assembly of a construction waste multistage crushing apparatus provided by the present invention;

Fig. 19 is a schematic structural view of a third view of a classification crushing assembly of a construction waste multistage crushing apparatus provided by the present invention;

FIG. 20 is an enlarged partial view of region D of FIG. 19;

fig. 21 is a schematic structural view of a dust removing assembly of a multi-stage crushing apparatus for construction waste according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings. 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.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 to 21, a construction waste multi-stage crushing apparatus of the present invention includes a feeding conveyor assembly 1000 for conveying construction waste to be crushed, a pre-crushing assembly 2000 for pre-crushing small-sized construction waste, a primary crushing assembly 3000 for crushing middle-sized or large-sized construction waste, a secondary crushing assembly 4000 for re-crushing construction waste treated by the primary crushing assembly 3000, a first fine crushing assembly 5000 for crushing construction waste treated by the secondary crushing assembly 4000, an extrusion crushing assembly 6000 for extrusion crushing construction waste treated by the first fine crushing assembly 5000, a classification crushing assembly 7000 for classification crushing construction waste treated by the extrusion crushing assembly 6000, and a dust removal assembly 8000 for dust removal generated by processing of the classification crushing assembly 7000;

the pre-crushing assembly 2000 is installed at the end part of the feeding conveying assembly 1000, the primary crushing assembly 3000 is installed at one side of the pre-crushing assembly 2000, the secondary crushing assembly 4000 is installed at one side of the primary crushing assembly 3000, the first fine crushing assembly 5000 is installed at one side of the secondary crushing assembly 4000, the extrusion crushing assembly 6000 is installed at one side of the first fine crushing assembly 5000, the classification crushing assembly 7000 is installed at one side of the extrusion crushing assembly 6000, and the dust removal assembly 8000 is installed at one side of the classification crushing assembly 7000;

When a user needs to process the construction waste multi-stage crushing equipment, firstly, the user places the middle-sized or large-sized construction waste which needs multi-stage treatment in the feeding conveying assembly 1000, the feeding conveying assembly 1000 transfers the construction waste, meanwhile, pre-crushing performs pre-crushing action on the small-sized construction waste, and crushed construction waste enters the feeding conveying assembly 1000, then, various types of construction waste enter the first-stage crushing assembly 3000 together, the first-stage crushing assembly 3000 performs the first-stage crushing treatment on the construction waste, enters the second-stage crushing assembly 4000 after the treatment is completed, the second-stage crushing assembly 4000 performs the second-stage crushing treatment on the construction waste again, then, the construction waste enters the first fine crushing assembly 5000, the first fine crushing assembly 5000 performs the fine crushing action on the construction waste, then, the construction waste enters the extrusion crushing assembly 6000 performs the extrusion crushing action on the construction waste, finally, the construction waste enters the classification crushing assembly 7000 performs the classification crushing action on the construction waste, and the dust removal assembly 8000 performs the dust removal action on dust generated during the operation of the classification crushing assembly 7000.

In this embodiment, the feeding transmission assembly 1000 includes a feeding transmission support 1100, a feeding transmission driving roller 1200, a feeding transmission driven roller 1300, a feeding transmission transfer belt 1400, a feeding transmission motor support 1500, a feeding driving motor 1600 and a feeding driving belt, the feeding transmission driving roller 1200 is rotationally connected to one end of the feeding transmission support 1100, the feeding transmission driven roller 1300 is rotationally connected to the other end of the feeding transmission support 1100, the feeding transmission transfer belt 1400 is rotationally connected between the feeding transmission driving roller 1200 and the feeding transmission driven roller 1300, the feeding transmission motor support 1500 is mounted on the feeding transmission support 1100, the feeding driving motor 1600 is mounted on the feeding transmission motor support 1500, and the feeding driving belt is connected between an output end of the feeding driving motor 1600 and one end of the feeding transmission driving roller 1200 extending out of the feeding transmission support 1100.

Wherein, each structure in the material loading conveying support 1100 plays fixed support's effect to material loading conveying subassembly 1000, when the user needs to handle construction waste, firstly, construction waste is placed on material loading conveying transfer belt 1400, then, material loading driving motor 1600 gets into operating condition, material loading driving motor 1600 drives material loading driving belt and rotates to material loading driving belt drives material loading conveying drive roller 1200 and rotates, then, material loading conveying drive roller 1200 drives material loading conveying transfer belt 1400 and rotates, and then realizes the action of transporting construction waste.

In this embodiment, the pre-crushing assembly 2000 includes a pre-crushing bracket 2100, a pre-crushing main housing 2200, a pre-crushing driving shaft 2300, a pre-crushing driven shaft 2400, a pre-crushing driving gear 2500, a pre-crushing driven gear 2600, a plurality of pre-crushing first cutting parts, a plurality of pre-crushing second cutting parts and a pre-crushing driving motor 2900, the pre-crushing bracket 2100 is mounted at one end of the feeding conveyor assembly 1000, the pre-crushing main housing 2200 is mounted on the pre-crushing bracket 2100, the pre-crushing driving shaft 2300 is rotatably connected in the pre-crushing main housing 2200, the pre-crushing driven shaft 2400 is rotatably connected in the pre-crushing main housing 2200, the pre-crushing driving gear 2500 is mounted at one end of the pre-crushing driving shaft extending out of the pre-crushing main housing 2200, the pre-crushing driven gear 2600 is mounted at one end of the pre-crushing main housing 2200, the pre-crushing driving gears 2500 and the pre-crushing driven gears 2600 are in meshed connection, the plurality of pre-crushing first cutting parts are mounted at the same distance on the pre-crushing bracket 2100, the pre-crushing driven shaft 2300 is mounted at the same distance from the pre-crushing driving motor 2900; the pre-crushing first cutting part comprises a pre-crushing first cutting main body 2710 and a plurality of pre-crushing first cutting protrusions 2720, the pre-crushing first cutting main body 2710 is arranged on the pre-crushing driving shaft 2300, and the plurality of pre-crushing first cutting protrusions 2720 are arranged outside the pre-crushing first cutting part at equal angles; the pre-crushing second cutting part comprises a pre-crushing second cutting main body 2810 and a plurality of pre-crushing second cutting protrusions 2820, the pre-crushing second cutting main body 2810 is installed on the pre-crushing driven shaft 2400, the plurality of pre-crushing second cutting protrusions 2820 are installed outside the pre-crushing second cutting part in equal angles, and the pre-crushing second cutting protrusions 2820 and the pre-crushing first cutting protrusions 2720 face in opposite directions.

Wherein the pre-crushing bracket 2100 plays a role in fixedly supporting each structure in the pre-crushing assembly 2000;

when a user needs to use the pre-crushing assembly 2000 to pre-crush the small-sized construction waste, firstly, the small-sized construction waste is placed into the pre-crushing main box 2200, then the pre-crushing driving motor 2900 enters a working state, the pre-crushing driving motor 2900 drives the pre-crushing driving shaft 2300 to rotate, and then the pre-crushing driving shaft 2300 drives the plurality of pre-crushing first cutting parts to rotate in the pre-crushing main box;

meanwhile, when the pre-crushing driving shaft 2300 rotates, the pre-crushing driving gear 2500 is driven to rotate, the pre-crushing driven gear 2600 rotates, the pre-crushing driven gear 2600 drives the pre-crushing driven shaft 2400 to rotate, the pre-crushing driven shaft 2400 drives the plurality of pre-crushing second cutting parts to rotate, the pre-crushing action is realized on the construction waste under the mutual matching of the plurality of pre-crushing first cutting parts and the plurality of pre-crushing second cutting parts, and the crushed construction waste falls into the feeding conveying assembly 1000 from the lower side of the pre-crushing main box 2200;

further, the pre-crushing first cutting body 2710 supports the plurality of pre-crushing first cutting protrusions 2720, the pre-crushing second cutting body 2810 supports the plurality of pre-crushing second cutting protrusions 2820, and simultaneously, the pre-crushing first cutting protrusions 2720 and the pre-crushing second cutting protrusions 2820 are turned just opposite, so that the crushing efficiency of the construction waste is improved.

In this embodiment, the primary crushing assembly 3000 includes a primary crushing main box 3100, a primary driving main shaft 3200, at least one primary driving wheel 3300, a plurality of primary linkages 3400, a plurality of primary connecting rods 3500, a plurality of primary hammering portions, a primary discharge turning door 3700 and at least one primary driving cylinder 3800, the primary crushing main box 3100 is mounted on one side of the pre-crushing assembly 2000, a primary feed inlet 3101 is opened on one side of the primary crushing main box 3100, the primary driving main shaft 3200 is rotatably connected in the primary crushing main box 3100, the primary driving wheel 3300 is mounted on one end of the primary driving main shaft 3200 extending out of the primary crushing main box 3100, a plurality of primary linkages 3400 are mounted on the primary driving main shaft 3200, a plurality of primary linkages 3400 are transversely penetrated through the primary linkages 3400, the primary hammering portions are rotatably connected on the primary connecting rods 3500, the primary discharge turning door 3700 is rotatably connected on one side of the primary crushing main box 3100, the primary driving main box 3100 is mounted on one side of the primary driving cylinder 3800, and the primary linkage rod 3700 is rotatably connected with the output end of the primary driving cylinder 3800;

The primary hammer includes a hammer body 3610 and a hammer breaker 3620, the hammer body 3610 being rotatably coupled to the primary connecting rod 3500, the hammer breaker 3620 being mounted at an end of the hammer body 3610 remote from the primary connecting rod 3500.

When construction waste enters the first-stage crushing assembly 3000, firstly, the construction waste enters the first-stage crushing main assembly 3100, and the first-stage driving wheel 3300 can be connected with an external motor, so that the external motor drives the first-stage driving wheel 3300 to rotate, and then the first-stage driving wheel 3300 drives the first-stage driving main shaft 3200 to rotate, and then drives the plurality of first-stage linkage parts 3400 to rotate, so that the plurality of first-stage linkage parts 3400 drive the plurality of first-stage connecting rods 3500 to rotate, and as the plurality of first-stage hammering parts are rotationally connected with the first-stage connecting rods 3500, the first-stage hammering parts are driven to swing in the first-stage crushing main assembly 3100 when the first-stage connecting rods 3500 rotate, and thus hammer crushing actions on the construction waste are completed;

after the hammering crushing action is completed, the first-stage driving cylinder 3800 enters a working state, so that the first-stage driving cylinder 3800 drives the first-stage discharging revolving door 3700 to be separated from one side of the first-stage crushing main box 3100, and the discharging action is completed;

Further, since the hammer main body portion 3610 supports the primary hammer portion and the hammer crushing block 3620 is a heavy metal block, the hammer crushing block 3620 performs a hammer crushing operation on the construction waste during the whipping operation.

In the present embodiment, the secondary crushing assembly 4000 includes a secondary crushing bracket 4100, a secondary crushing table 4200, a secondary crushing support block 4300, a secondary crushing first platen 4400, a secondary crushing rotating shaft 4500, a secondary crushing rotating block 4600, a secondary crushing second platen 4700, a secondary crushing driving wheel 4801, a secondary crushing belt 4820, a secondary crushing driven wheel 4830, and a secondary crushing driving motor 4840; the secondary crushing bracket 4100 is installed on one side of the primary crushing assembly, the secondary crushing workbench 4200 is installed on the upper side of the secondary crushing bracket 4100, the secondary crushing support block 4300 is rotatably connected in the secondary crushing workbench 4200, the secondary crushing first pressing plate 4400 is installed on one side of the secondary crushing support block 4300, the secondary crushing rotating shaft 4500 is rotatably connected in the secondary crushing workbench 4200, the secondary crushing rotating block 4600 is installed on the secondary crushing rotating shaft 4500, the secondary crushing second pressing plate 4700 is installed on one side of the secondary crushing rotating block 4600, the secondary crushing driving wheel 4801 is installed on one end of the secondary crushing rotating shaft 4500 extending out of the secondary crushing workbench 4200, the secondary crushing driven wheel 4830 is rotatably connected on one side of the secondary crushing workbench 4200, the secondary crushing driving motor 4840 is installed on the secondary crushing workbench 4200, the output end of the secondary crushing driving motor 4840 is rotatably connected with the secondary crushing driven wheel 4830, and the secondary crushing belt 4820 is installed between the secondary crushing driving wheel 4801 and the secondary crushing driven wheel 4830; the first pressing plate 4400 is provided with a plurality of first pressing grooves 4401, and the second pressing plate 4700 is provided with a plurality of second pressing grooves 4701.

Wherein, the secondary crushing bracket 4100 plays a role of fixing and supporting each structure in the secondary crushing assembly 4000, when the construction waste treated by the primary crushing assembly 3000 enters the secondary crushing assembly 4000, firstly, the construction waste enters the secondary crushing workbench 4200, then, the secondary crushing driving motor 4840 enters the working state, the secondary crushing driving motor 4840 drives the secondary crushing driven wheel 4830 to rotate, then, the secondary crushing driven wheel 4830 drives the secondary crushing belt 4820 to rotate, the secondary crushing belt 4820 drives the secondary crushing driving wheel 4801 to rotate, the secondary crushing driving wheel 4801 drives the secondary crushing rotating shaft 4500 to rotate, the secondary crushing rotating shaft 4500 drives the secondary crushing rotating block 4600 to rotate, the secondary crushing rotating block 4600 drives the secondary crushing second pressing plate 4700 to rotate, and the secondary crushing driving motor 4840 can be a bidirectional motor, namely, the secondary crushing driving wheel 4840 drives the secondary crushing driven wheel 4830 to rotate forward and then reversely, so as to reciprocate left and right, and the secondary crushing second pressing plate 4700 and the secondary crushing second pressing plate 4400 are matched with the secondary crushing second pressing plate 0 to extrude the construction waste;

Meanwhile, the first pressing groove 4401 on the secondary crushing first pressing plate 4400 and the second pressing groove 4701 on the secondary crushing second pressing plate 4700 can improve the friction to the construction waste, thereby improving the crushing effect to the construction waste to a certain extent.

In the present embodiment, the first fine grinding assembly 5000 includes a first fine grinding collection box 5100, a first fine grinding process box 5200, a first fine grinding feed portion 5300, a first fine grinding process portion 5400, a first fine grinding motor 5500, a first fine grinding drive gear 5600, a first fine grinding driven gear 5700, a first fine grinding drive shaft 5800, a plurality of first cutter blades 5900, a plurality of second cutter blades 5910, and a first fine grinding partition tray 5920; the utility model provides a fine grinding collecting box 5100, first fine grinding collecting box 5100 installs two-stage crushing subassembly 4000 one side, first fine grinding collecting box 5100 upside is installed to first fine grinding processing box 5200, first fine grinding feed portion 5300 installs first fine grinding processing box 5200 upside, first fine grinding processing portion 5400 installs first fine grinding processing box 5200 upside, first fine grinding motor 5500 installs in first fine grinding processing portion 5400, first fine grinding driving gear 5600 with the output of first fine grinding motor 5500 is connected, first fine grinding driven gear 5700 with first fine grinding driving gear 5600 meshing is connected, first fine grinding drive shaft 5800 one end with first fine grinding driven gear 5700 is connected, first fine grinding drive shaft 5800 other end stretches into in the first fine grinding processing box 5200, a plurality of first cutting knife 5900 are installed first fine grinding drive shaft 5800 center department, a plurality of second cutting knife 5910 are installed first fine grinding driven gear 5700 is in first fine grinding drive shaft 5800 is separated from first fine grinding collecting box 570 and is connected first fine grinding driving gear 5700.

The construction waste entering the first fine grinding assembly 5000 enters the first fine grinding processing box 5200 through the first fine grinding feeding portion 5300, then the first fine grinding motor 5500 enters a working state, the output end of the first fine grinding motor 5500 drives the first fine grinding driving gear 5600 to rotate, the first fine grinding driving gear 5600 drives the first fine grinding driven gear 5700 to rotate, the first grinding driven gear drives the first fine grinding driving shaft 5800 to rotate, the first fine grinding driving shaft 5800 drives the first cutting blades 5900 and the second cutting blades 5910 to rotate, and the first cutting blades 5900 and the second cutting blades 5910 cooperate with each other to finely grind the construction waste;

after finishing the fine crushing, the user extracts the first fine crushing separating tray 5920, so that the construction waste subjected to the fine crushing action enters the first fine crushing collecting box 5100, then the user inserts the first fine crushing separating tray 5920 between the first fine crushing processing boxes 5200 of the first fine crushing collecting box 5100 again, and then performs the fine crushing action on the new construction waste again;

further, the plurality of first cutting blades 5900 and the plurality of second cutting blades 5910 are staggered to improve the fine crushing efficiency of the construction waste.

In the present embodiment, the extrusion crushing assembly 6000 includes an extrusion crushing operation table 6100, an extrusion crushing processing tank 6200, a first extrusion driving cylinder 6300, a first extrusion crushing plate 6400, a second extrusion driving cylinder 6500, and a second extrusion crushing plate 6600, the extrusion crushing operation table 6100 is mounted on one side of the first fine crushing assembly 5000, the extrusion crushing processing tank 6200 is mounted on the extrusion crushing operation table 6100, the first extrusion driving cylinder 6300 is mounted on one side of the extrusion crushing operation table 6100, the first extrusion crushing plate 6400 is connected to an output end of the first extrusion driving cylinder 6300, and the first extrusion crushing plate 6400 is oriented to one side of the extrusion crushing processing tank 6200, the second extrusion driving cylinder 6500 is mounted on the other side of the extrusion crushing operation table 6100, the second extrusion crushing plate 6600 is connected to an output end of the second extrusion driving cylinder 6500, and the second extrusion crushing plate 6600 is oriented to the other side of the extrusion crushing processing tank 6200; the first extrusion crushing plate 6400 is provided with a transverse material passing hole 6401 and a longitudinal material passing hole 6402, and the transverse material passing hole 6401 and the longitudinal material passing hole 6402 are mutually communicated.

Wherein, the extrusion crushing operation table 6100 plays a role in fixing and supporting the extrusion crushing assembly 6000, when construction waste enters the extrusion crushing assembly 6000, the construction waste enters the extrusion crushing processing box 6200 at first, then, the first extrusion driving cylinder 6300 drives the first extrusion crushing plate 6400 to extend into the extrusion crushing processing box 6200, the second extrusion driving cylinder 6500 drives the second extrusion crushing plate 6600 to extend into the extrusion crushing processing box 6200, and the positions of the first extrusion crushing plate 6400 and the second extrusion crushing plate 6600 correspond to each other, so that the first extrusion crushing plate 6400 and the second extrusion crushing plate 6600 cooperate to perform extrusion crushing action on the construction waste in the extrusion crushing processing box 6200, and meanwhile, a space allowing the first extrusion crushing plate 6400 and the second extrusion crushing plate 6600 to pass through is formed in the extrusion crushing processing box 6200;

meanwhile, when the first extrusion crushing plate 6400 or the second extrusion crushing plate 6600 extrudes the construction waste, the small-sized construction waste can pass through the transverse material passing holes 6401 and the longitudinal material passing holes 6402, so that the efficiency and the accuracy of extrusion of the construction waste are improved;

it is noted that the sidewalls and top of the crush box 6200 may be inverted to enable construction waste to enter the crush box 6200 or exit the crush box 6200.

In this embodiment, the classifying crushing assembly 7000 includes a classifying crushing main body portion 7001, a classifying crushing first driving lever 7002, a classifying crushing first driving blade 7003, a classifying crushing sorting tray, a first distributing frame 7007, a second distributing frame 7008, a third distributing frame 7009, a classifying crushing engaging lever 7010, a first distributing stopper 7011, a second distributing stopper 7012, a third distributing stopper 7013, a classifying crushing second driving lever 7014, a first crushing gear 7015, a second crushing gear 7016, a third crushing gear 7017, a classifying crushing supporting plate 7018, at least one classifying crushing first driving lever 7019, at least one classifying crushing first rotating tray 7020, a plurality of diffusing plates 7021, a secondary driven bevel gear 7022, a secondary driving lever 7023, a secondary driving bevel gear 7024, a classifying crushing recovery box 7025, a micro blower 7028, a classifying crushing motor 7029, a classifying crushing first belt 7030, and a classifying crushing second belt 7031;

the classifying crushing main body portion 7001 is installed on one side of the extrusion crushing assembly 6000, the classifying crushing first driving rod 7002 is rotatably connected in the classifying crushing main body portion 7001, the classifying crushing first driving blade 7003 is installed on the classifying crushing first driving rod 7002, the classifying crushing sorting tray is installed on the outer side of the classifying crushing first driving blade 7003, the first material dividing frame 7007, the second material dividing frame 7008 and the third material dividing frame 7009 are sequentially installed on the lower side of the classifying crushing sorting tray, the classifying crushing connecting rod 7010 is rotatably connected on the lower side of the first material dividing frame 7007, the first material dividing limiting block 7011 is obliquely arranged between the lower side of the first material dividing frame 7007 and the classifying crushing connecting rod 7010, the second material dividing limiting block 7012 is obliquely arranged between the lower side of the second material dividing frame 7008 and the classifying crushing connecting rod 7010, the third material dividing limiting block 7013 is obliquely arranged between the lower side of the third material dividing frame 7009 and the classifying crushing connecting rod 7010, the classifying crushing second driving rod 7014 is connected to the lower side of the classifying crushing connecting rod 7010, the first crushing gear 7015, the second crushing gear 7016 and the third crushing gear 7017 are sequentially and rotatably connected to the classifying crushing second driving rod 7014, the classifying crushing supporting plate 7018 is installed in the classifying crushing main body portion 7001, the classifying crushing first rotating rod 7019 is rotatably connected to the classifying crushing supporting plate 7018, the classifying crushing first rotating plate 7020 is rotatably connected to the end portion of the classifying crushing first rotating rod 7019, a plurality of diffusion plates 7021 are installed on the classifying crushing first rotating plate 7020, the secondary driven bevel gears 7022 are installed on the classifying crushing first rotating rod 7019, the secondary driving rod 7023 is rotatably connected to the classifying breaking main body portion 7001, the secondary drive bevel gear 7024 is mounted at an end of the secondary driving rod 7023, and the secondary drive bevel gear 7024 is engaged with the secondary driven bevel gear 7022;

The classifying and crushing recovery box 7025 is arranged on the lower side of the classifying and crushing support plate 7018, the miniature blower 7028 is arranged on one side of the classifying and crushing recovery box 7025, the output end of the miniature blower 7028 extends into the classifying and crushing recovery box 7025, a classifying and crushing ash outlet 7026 is formed in one side of the classifying and crushing recovery box 7025, and a classifying and crushing discharge outlet 7027 is formed in the lower side of the classifying and crushing recovery box 7025;

the classifying crushing motor 7029 is mounted on one side of the classifying crushing main body portion 7001, an output end of the classifying crushing motor 7029 is connected with the classifying crushing second driving rod 7014, the classifying crushing first belt 7030 is mounted between the classifying crushing first driving rod 7002 and the classifying crushing second driving rod 7014, and the classifying crushing second belt 7031 is mounted between the classifying crushing second driving rod 7014 and the secondary driving rod 7023;

the classifying and sorting disc comprises a first classifying and crushing main body plate 7004, a second classifying and crushing main body plate 7005 and a plurality of classifying and crushing limit strips 7006, wherein the first classifying and crushing main body plate 7004 and the second classifying and crushing main body plate 7005 are all installed outside the classifying and crushing first driving blades 7003, a plurality of classifying and crushing limit strips 7006 are installed between the first classifying and crushing main body plate 7004 and the second classifying and crushing main body plate 7005, and a plurality of classifying and crushing limit strips 7006 are of arc-shaped structures.

When the construction waste enters the classifying and crushing assembly 7000, firstly, the construction waste can enter the classifying and crushing disc through the side wall of the classifying and crushing disc, and then, the construction waste with different sizes is classified and sequentially enters the first material distributing frame 7007, the second material distributing frame 7008 and the third material distributing frame 7009;

under the action of the first material dividing limiting block 7011 and the grading crushing connecting rod 7010, the construction waste passing through the first material dividing frame 7007 moves to the inner walls of the first crushing gear 7015 and the grading crushing main body 7001, at this time, the grading crushing second driving rod 7014 rotates to drive the first crushing gear 7015 to rotate so as to friction crush the construction waste, then the crushed construction waste enters the diffusion plate 7021, at this time, the secondary driving rod 7023 rotates to drive the secondary driving bevel gear 7024 to rotate so as to drive the secondary driven bevel gear 7022 to rotate so as to drive the grading crushing first rotating rod 7019 to rotate, the grading crushing first rotating rod 7019 drives the grading crushing first rotating plate 7020 to rotate so as to drive the plurality of diffusion plates 7021 to perform a beating action on the construction waste, then the dust and the construction waste fall into the grading crushing recovery box 7025, the miniature blower 7028 works so that the dust is blown into the dust removing assembly 8000, and the solid construction waste falls to the lower side of the grading recovery box 7025;

A plurality of raised stripes can be arranged on the inner wall of the grading crushing main body part 7001 corresponding to the first crushing gear 7015 so as to improve the friction crushing effect when the construction waste passes through the first crushing gear 7015 and the inner wall of the grading crushing main body part 7001;

of course, the working process of the construction waste entering the second and third separating frames 7008 and 7009 is the same as the above actions, and will not be described here again;

and, a partition plate may be provided between the first, second, and third split frames 7007, 7008, and 7009;

meanwhile, when the classifying crushing motor 7029 works, not only the classifying crushing second driving rod 7014 is driven to rotate, but also the classifying crushing first driving rod 7002 is driven to rotate through the classifying crushing first belt 7030, so that the classifying crushing first driving rod 7002 drives the classifying crushing first driving blades 7003 to rotate, and the transmission of the construction waste in the classifying crushing and sorting disc is realized;

further, the classifying breaking motor 7029 also drives the secondary driving lever 7023 to rotate through the classifying breaking second belt 7031;

specifically, the first classification crushing main body plate 7004 and the second classification crushing main body plate 7005 together support the whole classification crushing sorting disc, and since the classification crushing limit bars 7006 are of an arc-shaped structure, the spacing between every two classification crushing limit bars 7006 is gradually increased, so that construction waste of different sizes can fall into the first material distributing frame 7007, the second material distributing frame 7008 and the third material distributing frame 7009.

In this embodiment, the dust collection assembly 8000 includes a dust collection tank 8100, a dust collection exhaust fan 8200, a dust collection air inlet 8300 and a dust collection dust outlet 8400, the dust collection tank 8100 is mounted on one side of the classification crushing assembly 7000, the dust collection exhaust fan 8200 is mounted on the upper side of the dust collection tank 8100, one end of the dust collection air inlet 8300 is connected with the dust collection exhaust fan 8200, and the dust collection dust outlet 8400 is mounted on the side wall of the dust collection tank 8100.

Wherein, when classifying crushing subassembly 7000 is carrying out classifying crushing action to construction waste, can produce the dust, at this moment, the dust removal subassembly 8000 carries out the dust removal action to the dust, first of all, dust removal inlet portion 8300 corresponds with classifying crushing ash hole 7026 position of classifying crushing subassembly 7000, then, dust removal air exhauster 8200 gets into operating condition, thereby dust removal air exhauster 8200 inhales dust in dust removal collection tank 8100, when the user need clear up the dust in the dust removal collection tank 8100, can clear up the dust in the dust removal collection tank 8100 through dust removal ash hole 8400.

In this embodiment, the present invention also provides a method for operating a multi-stage crushing apparatus for construction waste, including the steps of: s1, feeding construction waste to be crushed, and placing the construction waste to be crushed in the feeding conveying assembly 1000 for conveying; s2, pre-crushing treatment, wherein when the small-sized construction waste passes through the pre-crushing assembly 2000, the pre-crushing assembly 2000 performs pre-crushing action on the construction waste; s3, carrying out primary crushing treatment on the construction waste, wherein the construction waste passes through the primary crushing assembly 3000, and the primary crushing assembly 3000 carries out primary crushing action on the construction waste; s4, carrying out secondary crushing treatment, namely enabling the construction waste to pass through the secondary crushing assembly 4000, wherein the secondary crushing assembly 4000 carries out secondary crushing action on the construction waste; s5, fine crushing treatment, wherein the construction waste treated in the step S4 enters the first fine crushing assembly 5000, and the first fine crushing assembly 5000 performs fine crushing action on the construction waste; s6, extrusion crushing treatment, wherein the construction waste passes through the extrusion crushing assembly 6000, and the extrusion crushing assembly 6000 performs extrusion crushing action on the construction waste; s7, classifying and crushing the construction waste, wherein the construction waste passes through the classifying and crushing assembly 7000, and the classifying and crushing assembly 7000 performs classifying and crushing actions on the construction waste; s8, dedusting, wherein the dedusting assembly 8000 performs dedusting operation on dust generated by the operation of the classifying and crushing assembly 7000.

The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. A multi-stage crushing plant for construction waste, characterized by comprising:

the feeding and conveying assembly is used for conveying the construction waste to be crushed;

the pre-crushing assembly is used for pre-crushing small building garbage and is arranged at the end part of the feeding conveying assembly;

a primary crushing assembly for crushing the middle-or large-sized construction waste, the primary crushing assembly being installed at one side of the pre-crushing assembly;

the secondary crushing assembly is used for crushing the construction waste treated by the primary crushing assembly again, and is arranged on one side of the primary crushing assembly;

the first fine crushing assembly is used for crushing the construction waste subjected to crushing treatment by the secondary crushing assembly, and is arranged on one side of the secondary crushing assembly;

The extrusion crushing assembly is used for extrusion crushing of the construction waste treated by the first fine crushing assembly, and is arranged on one side of the first fine crushing assembly;

the classifying and crushing assembly is used for classifying and crushing the construction waste treated by the extruding and crushing assembly and is arranged on one side of the extruding and crushing assembly;

the dust removing component is used for removing dust generated by processing the classifying and crushing component and is arranged on one side of the classifying and crushing component;

the classifying crushing assembly comprises a classifying crushing main body part, a classifying crushing first driving rod, a classifying crushing first driving blade, a classifying crushing sorting disc, a first material separating frame, a second material separating frame, a third material separating frame, a classifying crushing connecting rod, a first material separating limiting block, a second material separating limiting block, a third material separating limiting block, a classifying crushing second driving rod, a first crushing gear, a second crushing gear, a third crushing gear, a classifying crushing supporting plate, at least one classifying crushing first rotating rod, at least one classifying crushing first rotating disc, a plurality of diffusion plates, a secondary driven bevel gear, a secondary driving rod, a secondary driving bevel gear, a classifying crushing recovery box, a miniature blower, a classifying crushing motor, a classifying crushing first belt and a classifying crushing second belt;

The classifying crushing main body part is installed on one side of the extruding crushing assembly, the classifying crushing first driving rod is rotationally connected in the classifying crushing main body part, the classifying crushing first driving blade is installed on the classifying crushing first driving rod, the classifying crushing sorting disc is installed on the outer side of the classifying crushing first driving blade, the first material separating frame, the second material separating frame and the third material separating frame are sequentially installed on the lower side of the classifying crushing sorting disc, the classifying crushing connecting rod is rotationally connected on the lower side of the first material separating frame, the first material separating limiting block is obliquely arranged between the lower side of the first material separating frame and the classifying crushing connecting rod, the second material separating limiting block is obliquely arranged between the lower side of the second material separating frame and the classifying crushing connecting rod, the third material dividing limiting block is obliquely arranged between the lower side of the third material dividing frame and the grading crushing connecting rod, the grading crushing second driving rod is connected with the lower side of the grading crushing connecting rod, the first crushing gear, the second crushing gear and the third crushing gear are sequentially and rotatably connected with the grading crushing second driving rod, the grading crushing supporting plate is installed in the grading crushing main body part, the grading crushing first rotating rod is rotatably connected with the grading crushing supporting plate, the grading crushing first rotating disc is rotatably connected with the grading crushing first rotating rod end part, a plurality of secondary driven bevel gears are installed on the grading crushing first rotating rod, the secondary driving rod is rotatably connected with the grading crushing main body part, the secondary driving bevel gears are installed on the secondary driving rod end part, the secondary driving bevel gear is in meshed connection with the secondary driven bevel gear;

The classifying and crushing recovery box is arranged on the lower side of the classifying and crushing supporting plate, the miniature blower is arranged on one side of the classifying and crushing recovery box, the output end of the miniature blower extends into the classifying and crushing recovery box, a classifying and crushing ash outlet is formed in one side of the classifying and crushing recovery box, and a classifying and crushing discharge outlet is formed in the lower side of the classifying and crushing recovery box;

the classifying and sorting disc comprises a first classifying and crushing main body plate, a second classifying and crushing main body plate and a plurality of classifying and crushing limiting bars, wherein the first classifying and crushing main body plate and the second classifying and crushing main body plate are all installed on the outer side of the classifying and crushing first driving blade, the classifying and crushing limiting bars are installed between the first classifying and crushing main body plate and the second classifying and crushing main body plate, and most classifying and crushing limiting bars are of arc-shaped structures.

2. The multi-stage crushing equipment for construction waste according to claim 1, wherein the feeding conveying assembly comprises a feeding conveying support, a feeding conveying driving roller, a feeding conveying driven roller, a feeding conveying transfer belt, a feeding conveying motor support, a feeding driving motor and a feeding driving belt, the feeding conveying driving roller is rotatably connected to one end of the feeding conveying support, the feeding conveying driven roller is rotatably connected to the other end of the feeding conveying support, the feeding conveying transfer belt is rotatably connected between the feeding conveying driving roller and the feeding conveying driven roller, the feeding conveying motor support is mounted on the feeding conveying support, the feeding driving motor is mounted on the feeding conveying motor support, and the feeding driving belt is connected between an output end of the feeding driving motor and one end of the feeding conveying roller extending out of the feeding conveying support.

3. The construction waste multistage crushing apparatus according to claim 1, wherein the pre-crushing assembly comprises a pre-crushing support, a pre-crushing main box, a pre-crushing driving shaft, a pre-crushing driven shaft, a pre-crushing driving gear, a pre-crushing driven gear, a plurality of pre-crushing first cutting parts, a plurality of pre-crushing second cutting parts and a pre-crushing driving motor, the pre-crushing support is mounted at one end of the feeding conveying assembly, the pre-crushing main box is mounted on the pre-crushing support, the pre-crushing driving shaft is rotatably connected in the pre-crushing main box, the pre-crushing driven shaft is rotatably connected in the pre-crushing main box, the pre-crushing driving gear is mounted at one end of the pre-crushing driving shaft extending out of the pre-crushing main box, the pre-crushing driven gear is mounted at one end of the pre-crushing main box, the pre-crushing driven shaft is in meshed connection with the pre-crushing driving gear, the plurality of pre-crushing first cutting parts are mounted on the pre-crushing driving shaft at equal intervals, the plurality of pre-crushing driven shafts are mounted on the pre-crushing motor, and a pre-crushing output is mounted on the pre-crushing support;

The pre-crushing first cutting part comprises a pre-crushing first cutting main body and a plurality of pre-crushing first cutting protrusions, the pre-crushing first cutting main body is arranged on the pre-crushing driving shaft, and the plurality of pre-crushing first cutting protrusions are arranged outside the pre-crushing first cutting part at equal angles;

the pre-crushing second cutting part comprises a pre-crushing second cutting main body and a plurality of pre-crushing second cutting protrusions, the pre-crushing second cutting main body is arranged on a pre-crushing driven shaft, the pre-crushing second cutting protrusions are arranged on the outer side of the pre-crushing second cutting part at equal angles, and the pre-crushing second cutting protrusions and the pre-crushing first cutting protrusions face the same direction.

4. The multi-stage crushing equipment for construction waste according to claim 1, wherein the primary crushing assembly comprises a primary crushing main box body, a primary driving main shaft, at least one primary driving wheel, a plurality of primary linkage parts, a plurality of primary connecting rods, a plurality of primary hammering parts, a primary discharging rotating door and at least one primary driving cylinder, the primary crushing main box body is arranged on one side of the pre-crushing assembly, a primary feeding hole is formed in one side of the primary crushing main box body, the primary driving main shaft is rotatably connected in the primary crushing main box body, the primary driving wheel is arranged at one end of the primary driving main shaft extending out of the primary crushing main box body, the primary linkage parts are arranged on the primary driving main shaft, the primary connecting rods transversely penetrate through the primary linkage parts, the primary hammering parts are rotatably connected to the primary connecting rods, the primary discharging rotating door is rotatably connected to one side of the primary crushing main box body, the primary driving cylinder is arranged on one side of the primary crushing main box body, and the output end of the primary driving cylinder is connected with the primary discharging rotating door;

The primary hammering portion comprises a hammering main body portion and hammer breaking fragments, the hammering main body portion is rotatably connected to the primary connecting rod, and the hammering breaking block is mounted at one end of the hammering main body portion far away from the primary connecting rod.

5. The multi-stage crushing plant for construction waste according to claim 1, wherein the secondary crushing assembly comprises a secondary crushing bracket, a secondary crushing workbench, a secondary crushing support block, a secondary crushing first pressing plate, a secondary crushing rotating shaft, a secondary crushing rotating block, a secondary crushing second pressing plate, a secondary crushing driving wheel, a secondary crushing belt, a secondary crushing driven wheel and a secondary crushing driving motor;

the secondary crushing support is arranged on one side of the primary crushing assembly, the secondary crushing workbench is arranged on the upper side of the secondary crushing support, the secondary crushing supporting block is rotationally connected in the secondary crushing workbench, the secondary crushing first pressing plate is arranged on one side of the secondary crushing supporting block, the secondary crushing rotating shaft is rotationally connected in the secondary crushing workbench, the secondary crushing rotating block is arranged on the secondary crushing rotating shaft, the secondary crushing second pressing plate is arranged on one side of the secondary crushing rotating block, the secondary crushing driving wheel is arranged at one end of the secondary crushing rotating shaft extending out of the secondary crushing workbench, the secondary crushing driven wheel is rotationally connected on one side of the secondary crushing workbench, the secondary crushing driving motor is arranged on the secondary crushing workbench, the output end of the secondary crushing driving motor is connected with the secondary crushing driven wheel, and the secondary crushing belt is arranged between the secondary crushing driving wheel and the secondary crushing driven wheel;

A plurality of first extrusion grooves are formed in the second crushing first pressing plate, and a plurality of second extrusion grooves are formed in the second crushing second pressing plate.

6. The multi-stage crushing apparatus for construction waste according to claim 1, wherein the first fine crushing assembly comprises a first fine crushing collecting tank, a first fine crushing processing tank, a first fine crushing feeding portion, a first fine crushing processing portion, a first fine crushing motor, a first fine crushing driving gear, a first fine crushing driven gear, a first fine crushing driving shaft, a plurality of first cutting blades, a plurality of second cutting blades, and a first fine crushing partition tray;

the utility model provides a secondary crushing subassembly, first fine grinding collecting box, first fine grinding processing box, first fine grinding feeding portion, first fine grinding processing box, first fine grinding processing portion, first fine grinding motor, first fine grinding driving shaft, first fine grinding driving gear with the output of first fine grinding motor is connected, first fine grinding driven gear with first fine grinding driving gear meshing is connected, first fine grinding driving shaft one end with first fine grinding driven gear is connected, first fine grinding driving shaft other end stretches into first fine grinding processing box is interior, a plurality of first cutting blades are installed first fine grinding driving shaft center department, a plurality of second cutting blades are installed first fine grinding driving shaft is kept away from first fine grinding driven gear's one end, first fine grinding diaphragm is connected first fine grinding driving gear with first fine grinding collecting box is connected between first fine grinding collecting box.

7. The multi-stage crushing apparatus for construction waste according to claim 1, wherein the crushing assembly includes a crushing operation table, a crushing processing tank, a first crushing driving cylinder, a first crushing plate, a second crushing driving cylinder, and a second crushing plate, the crushing operation table is mounted on one side of the first fine crushing assembly, the crushing processing tank is mounted on the crushing operation table, the first crushing driving cylinder is mounted on one side of the crushing operation table, the first crushing plate is connected to an output end of the first crushing driving cylinder, and the first crushing driving cylinder is directed to one side of the crushing processing tank, the second crushing driving cylinder is mounted on the other side of the crushing operation table, the second crushing plate is connected to an output end of the second crushing driving cylinder, and the second crushing plate is directed to the other side of the crushing processing tank;

the first extrusion crushing plate is provided with a transverse material passing hole and a longitudinal material passing hole, and the transverse material passing hole and the longitudinal material passing hole are mutually communicated.

8. The multi-stage crushing equipment for construction waste according to claim 1, wherein the dust collection assembly comprises a dust collection tank, a dust collection exhaust fan, a dust collection air inlet part and a dust collection ash outlet, the dust collection tank is arranged on one side of the grading crushing assembly, the dust collection exhaust fan is arranged on the upper side of the dust collection tank, one end of the dust collection air inlet part is connected with the dust collection exhaust fan, and the dust collection ash outlet is arranged on the side wall of the dust collection tank.

9. A method of operating a multi-stage crushing plant for construction waste according to any one of claims 1 to 8, comprising the steps of:

s1, feeding construction waste to be crushed, and placing the construction waste to be crushed in the feeding conveying assembly for conveying;

s2, pre-crushing treatment, wherein small building garbage passes through the pre-crushing assembly, and the pre-crushing assembly performs pre-crushing action on the building garbage;

s3, carrying out primary crushing treatment on the construction waste, wherein the construction waste passes through the primary crushing assembly, and the primary crushing assembly carries out primary crushing action on the construction waste;

s4, carrying out secondary crushing treatment, namely enabling the construction waste to pass through the secondary crushing assembly, and carrying out secondary crushing action on the construction waste by the secondary crushing assembly;

s5, fine crushing treatment, namely, the construction waste treated in the step S4 enters the first fine crushing assembly, and the first fine crushing assembly performs fine crushing action on the construction waste;

s6, extrusion crushing treatment, wherein the construction waste passes through the extrusion crushing assembly, and the extrusion crushing assembly performs extrusion crushing action on the construction waste;

s7, classifying and crushing the construction waste, wherein the construction waste passes through the classifying and crushing assembly, and the classifying and crushing assembly performs classifying and crushing actions on the construction waste;

S8, dedusting, wherein the dedusting component performs dedusting action on dust generated by the operation of the classifying and crushing component.