CN113578485B - Construction waste concrete crushing device and method - Google Patents
Construction waste concrete crushing device and method Download PDFInfo
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- CN113578485B CN113578485B CN202110906385.8A CN202110906385A CN113578485B CN 113578485 B CN113578485 B CN 113578485B CN 202110906385 A CN202110906385 A CN 202110906385A CN 113578485 B CN113578485 B CN 113578485B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/005—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) the materials to be pulverised being disintegrated by collision of, or friction between, the material particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/22—Crushing mills with screw-shaped crushing means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a construction waste concrete crushing device and a method, wherein the construction waste concrete crushing device comprises: a feed hopper; the primary crushing cavity is communicated with the feed hopper through a sealed conveying assembly, and two first crushing assemblies arranged in the vertical direction are mounted on the inner side of the primary crushing cavity; the two movable blocking pieces are symmetrically arranged between the two side plates and are fixedly connected with the movable end of a bidirectional telescopic rod arranged on one side plate; and two groups of second crushing assemblies are arranged and are respectively rotatably installed on the inner sides of the two movable blocking pieces, and the two second crushing assemblies are connected with a motor installed on one movable blocking piece through a transmission assembly.
Description
Technical Field
The invention relates to the technical field related to construction waste recovery, in particular to a construction waste concrete crushing device and method.
Background
The construction waste refers to residue, waste soil, waste material, sludge and other wastes generated in the process of constructing, laying or dismantling and repairing various buildings, structures, pipe networks and the like by construction and construction units or individuals.
Most of the construction wastes are not treated at all, and are transported to the suburbs or the villages by construction units to be stacked or buried in the open air, so that a large amount of construction expenses such as land charge for collection, garbage clearing and transporting cost and the like are consumed, and meanwhile, the problems of scattering, dust, sand flying and the like in the clearing, transporting and stacking processes cause serious environmental pollution.
Can produce a large amount of building rubbish in the construction process of building, these rubbish can carry out the recycling of resource usually through further processing after, and building rubbish needs carry out broken handle, and present building rubbish breaker is broken size when broken is fixed, then is not suitable for to some demands equidimensions, all is in the limitation.
Disclosure of Invention
The invention aims to provide a construction waste concrete crushing device and a construction waste concrete crushing method, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction waste concrete breaking device, comprising:
a feed hopper;
the crushing device comprises a primary crushing cavity, wherein an impact type crushing assembly is arranged on the inner side of the primary crushing cavity;
the two movable blocking pieces are symmetrically arranged between the two side plates and fixedly connected with the movable end of a bidirectional telescopic rod arranged on one side plate, and the bidirectional telescopic rod drives the two movable blocking pieces to move oppositely or oppositely;
the two second crushing assemblies are respectively and rotatably arranged on the inner sides of the two movable blocking pieces, the two second crushing assemblies are connected with a motor arranged on one of the movable blocking pieces through a transmission assembly, the transmission assembly can change along with the change of the distance between the two movable blocking pieces and keep the transmission state of the two second crushing assemblies;
and the blanking hopper is arranged at one end, far away from the communicating cavity, of the side plate.
As a still further scheme of the invention: the impact crushing assembly comprises a poking roller which is rotatably installed in the primary crushing cavity and a protruding piece which is installed on the side wall of the primary crushing cavity, and the poking plate pokes the construction waste falling into the primary crushing cavity to collide with the protruding piece.
As a still further scheme of the invention: two first baffle plates are symmetrically arranged on the communication cavity, and the first baffle plates are in sliding connection with the upper end face of the movable stopper;
and two second baffles are symmetrically arranged on the blanking hopper and are in sliding connection with the lower end surface of the movable stopper.
As a still further scheme of the invention: the two sides of the side plate are provided with embedded grooves, and the two sides of the movable blocking piece are inserted into the embedded grooves and are in sliding connection with the embedded grooves.
As a still further scheme of the invention: the second crushing assembly comprises a driving roller which is rotatably arranged on the inner side of the movable stopper, and spiral protruding teeth are fixedly arranged on the driving roller;
the spiral protruding teeth on the two driving rollers are arranged oppositely.
As a still further scheme of the invention: the transmission assembly comprises a sliding assembly which is slidably mounted on the side plate and a transmission shaft which is rotatably mounted on the sliding assembly, a second gear is fixed on the transmission shaft, the second gear is meshed with a first gear fixed on one of the driving rollers, the transmission shaft is also rotatably connected with the other driving roller through a second transmission belt, and the other driving roller is also rotatably connected with an output shaft of the motor through a first transmission belt;
the transmission shaft is movably connected with the two driving rollers through a connecting assembly.
As a still further scheme of the invention: the coupling assembling is including rotating the installation the lantern ring on transmission shaft and two drive rollers is installed the lantern ring on the transmission shaft is respectively through first connecting rod and second connecting rod and two lantern ring fixed connection on the drive roller.
As a still further scheme of the invention: the sliding assembly comprises a movable plate, the movable plate is in sliding fit with a sliding groove formed in the side plate, and the transmission shaft is rotatably mounted on the movable plate.
The crushing method for recycling the construction waste is characterized in that the construction waste concrete crushing device comprises the following steps:
s1, starting a motor and a second motor, then placing the construction waste into a feed hopper, and conveying the construction waste entering the feed hopper into a primary crushing cavity through a sealed conveying assembly;
s2, the second motor drives the two roll shafts to rotate oppositely, so that the stirring blades on the roll shafts are driven to rotate, the stirring blades positioned above stir the construction waste downwards, and the stirring blades positioned below stir the fallen construction waste upwards, so that the construction waste is crushed by mutual impact;
s3, the primarily crushed construction waste enters a secondary crushing cavity formed by the two movable stoppers and the side plates through the communicating cavity, and the motor is matched with the transmission assembly to drive the two driving rollers to rotate oppositely so as to be matched with the spiral raised teeth to perform secondary crushing on the construction waste;
s4, when the construction waste with different crushing degrees needs to be crushed, starting the bidirectional telescopic rod to drive the two movable stoppers to move so as to change the size of the secondary crushing cavity and change the distance between the two driving rollers;
and S5, discharging the crushed construction waste through a blanking hopper to finish crushing.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, the construction waste is put into the feed hopper, is conveyed into the primary crushing cavity through the sealing conveying assembly, is subjected to primary crushing through the first crushing assembly arranged in the primary crushing cavity, enters the secondary crushing cavity consisting of the side plate and the movable blocking piece through the communicating cavity, is subjected to secondary crushing through the second crushing assembly, and is discharged through the blanking hopper, wherein the distance between the two movable blocking pieces can be adjusted through the arranged bidirectional telescopic rod, and meanwhile, the distance between the two second crushing assemblies is driven to be adjusted, so that different crushing requirements are realized.
Drawings
Fig. 1 is a schematic structural diagram of a construction waste concrete crushing device.
Fig. 2 is a front view of the construction waste concrete breaking apparatus.
Fig. 3 is a rear view of the construction waste concrete breaking device.
Fig. 4 is a half sectional view of the construction waste concrete breaking device.
Fig. 5 is a schematic structural diagram of a transmission assembly in the construction waste concrete crushing device.
In the figure: 1-a feed hopper, 2-a sealed conveying assembly, 3-a support, 4-a primary crushing cavity, 5-a side plate, 6-a chute, 7-a movable plate, 8-a communicating cavity, 9-a first baffle, 10-a movable stopper, 11-a bidirectional telescopic rod, 12-a motor, 13-a first transmission belt, 14-a blanking hopper, 15-a second baffle, 16-a second connecting rod, 17-a lantern ring, 18-a second transmission belt, 19-a spiral raised tooth, 20-a driving roller, 21-a first gear, 22-a second gear, 23-a first connecting rod and 24-a transmission shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 5, in an embodiment of the present invention, the construction waste concrete crushing apparatus includes:
a feed hopper 1;
a primary crushing cavity 4, wherein an impact type crushing assembly is arranged on the inner side of the primary crushing cavity 4;
the side plates 5 are fixed on a communication cavity 8 communicated with the inner side of the primary crushing cavity 4, two movable blocking pieces 10 are symmetrically arranged between the two side plates 5, the two movable blocking pieces 10 are fixedly connected with the movable end of a bidirectional telescopic rod 11 arranged on one side plate 5, and the bidirectional telescopic rod 11 drives the two movable blocking pieces 10 to move oppositely or oppositely;
the two second crushing assemblies are respectively and rotatably arranged on the inner sides of the two movable stoppers 10, the two second crushing assemblies are connected with a motor 12 arranged on one movable stopper 10 through a transmission assembly, the transmission assembly can change along with the change of the distance between the two movable stoppers 10 and keep the transmission state of the two second crushing assemblies;
and the blanking hopper 14 is mounted at one end of the side plate 5 far away from the communication cavity 8.
In the embodiment of the invention, construction waste is put into a feed hopper 1, is conveyed into a primary crushing cavity 4 through a sealing conveying assembly, is subjected to primary crushing through an impact crushing assembly arranged in the primary crushing cavity 4, enters a secondary crushing cavity consisting of a side plate 5 and a movable blocking piece 10 through a communicating cavity 8, is subjected to secondary crushing through a second crushing assembly, and is discharged through a blanking hopper 14, wherein the distance between the two movable blocking pieces 10 can be adjusted through a bidirectional telescopic rod 11, and the distance between the two second crushing assemblies is driven to be adjusted at the same time, so that different crushing requirements are realized.
It should be noted that, when the crushing degree is adjusted, the second crushing assembly and the movable stopper 10 are synchronously adjusted, so that the overall structure of the secondary crushing cavity can be realized, and the problem that when only the second crushing assembly is adjusted, the construction waste easily falls out from the space between the second crushing assembly and the movable stopper 10 to influence the crushing effect can be effectively solved.
It should be further noted that the above-mentioned sealing conveying assembly includes a multistage conveyor belt and a dust cover sleeved outside the conveyor belt, so as to ensure that no influence is caused to the surrounding environment when the construction waste is conveyed.
The side of the communicating cavity 8 is fixed with a support 3, and the sealed conveying assembly is fixedly connected with the support 3 through a vertical rod so as to support the sealed conveying assembly.
As another embodiment of the present invention, the impact crusher assembly comprises a stirring roller rotatably installed in the primary crushing chamber 4 and a protrusion installed on a side wall of the primary crushing chamber 4, and the stirring plate stirs the construction waste falling into the primary crushing chamber 4 to collide with the protrusion.
What need explain is, strike broken subassembly's theory of operation specifically does, and the stirring roller is installed to 4 internal rotations in primary crushing chamber, and when the concrete piece that falls into in primary crushing chamber 4 contacts with stirring the roller, stirring the roller and produce the motive force to the concrete piece to on striking protruding piece with the concrete piece, thereby realize the striking breakage of muddy soil piece, wherein, what still need explain, stirring roller and protruding piece all adopt the metal material to make.
Two first baffle plates 9 are symmetrically arranged on the communicating cavity 8, and the first baffle plates 9 are in sliding connection with the upper end surface of the movable stopper 10;
two second baffles 15 are symmetrically installed on the blanking hopper 14, and the two second baffles 15 are slidably connected with the lower end surface of the movable stopper 10.
The first baffle 9 can prevent the upper part of the movable stopper 10 from being communicated with the outside, and at the same time, the communicating cavity 8 can be ensured to keep inconvenient passing area when the second crushing assembly is adjusted, and the second baffle 15 and the second baffle 9 have the same function, so that the detailed description is omitted in the present application.
The two sides of the side plate 5 are provided with embedded grooves, and the two sides of the movable stopper 10 are inserted into the embedded grooves and are in sliding connection with the embedded grooves.
In the embodiment of the invention, the embedded groove is used for inserting the movable stopper 10, the movable stopper 10 is mainly limited to move, the movable stopper 10 is placed to be deviated, meanwhile, the contact area of the movable stopper 10 and the side plate 5 in the construction waste can be reduced, and the inconvenience in adjustment is prevented.
Wherein, it is required to explain, be provided with the breach on the curb plate 5, prevent to cause the interference to it when the broken subassembly of second is adjusted, breach department must be provided with mobilizable baffle certainly to prevent that construction waste from exposing from the breach, and concrete this application is no longer repeated.
The second crushing assembly comprises a driving roller 20 rotatably arranged on the inner side of the movable stopper 10, and spiral raised teeth 19 are fixedly arranged on the driving roller 20;
the spiral convex teeth 19 on the two driving rollers 20 are oppositely arranged.
In the embodiment of the present invention, the spiral protrusion teeth 19 are similar to the protrusion structure of the conventional crushing roller, and therefore, the present application does not describe in detail herein, and the spiral protrusion teeth 19 can generate a certain lateral force when the building waste is crushed in the vertical direction, thereby improving the crushing effect.
The transmission assembly comprises a sliding assembly slidably mounted on the side plate 5 and a transmission shaft 24 rotatably mounted on the sliding assembly, a second gear 22 is fixed on the transmission shaft 24, the second gear 22 is meshed with a first gear 21 fixed on one of the driving rollers 20, the transmission shaft 24 is further rotatably connected with the other driving roller 20 through a second transmission belt 18, and the other driving roller 20 is further rotatably connected with an output shaft of the motor 12 through a first transmission belt 13;
the transmission shaft 24 is movably connected with the two driving rollers 20 through a connecting component.
When the motor 12 is in operation, the first transmission belt 13 drives one of the driving rollers 20 to rotate, the second transmission belt 18 drives the transmission shaft 24 to rotate, when the transmission shaft 24 rotates, the first gear 21 and the second gear 22 are meshed to drive the other driving roller 20 to rotate, so that the driving requirement is met, the two driving rollers 20 rotate oppositely, the connecting assembly is arranged, the first gear 21 and the second gear 22 can be meshed when the positions of the two driving rollers 20 are adjusted, and the second transmission belt 18 can keep the transmission effect.
The connecting assembly comprises a lantern ring 17 rotatably mounted on the transmission shaft 24 and the two driving rollers 20, and the lantern ring 17 mounted on the transmission shaft 24 is fixedly connected with the lantern rings 17 on the two driving rollers 20 through a first connecting rod 23 and a second connecting rod 16 respectively.
In the embodiment of the present invention, due to the restriction of the first connecting rod 23 and the second connecting rod 16, the axial distance between the driving shaft 24 and the two driving rollers 20 is not changed when the position of the driving shaft is changed.
The sliding assembly comprises a movable plate 7, the movable plate 7 is in sliding fit with a sliding groove 6 arranged on the side plate 5, and the transmission shaft 24 is rotatably mounted on the movable plate 7.
The construction waste concrete crushing method is characterized in that the construction waste concrete crushing device comprises the following steps:
s1, starting the motor 12 and the second motor 16, then placing the construction waste into the feed hopper 1, and conveying the construction waste entering the feed hopper 1 into the primary crushing cavity 4 through the sealed conveying component;
s2, the second motor 16 drives the two roll shafts 17 to rotate oppositely, so that the toggle blades 18 on the roll shafts 17 are driven to rotate, the upper toggle blade 18 toggles the construction waste downwards, and the lower toggle blade 18 toggles the fallen construction waste upwards, so that the construction waste is collided and crushed;
s3, the primarily crushed construction waste enters a secondary crushing cavity formed by the two movable stoppers 10 and the side plates 5 through the communicating cavity 8, and the motor 12 is matched with the transmission assembly to drive the two driving rollers 20 to rotate oppositely so as to be matched with the spiral convex teeth to perform secondary crushing on the construction waste;
s4, when the construction waste with different crushing degrees needs to be crushed, starting the bidirectional telescopic rod 11 to drive the two movable stoppers 10 to move so as to change the size of the secondary crushing cavity and change the distance between the two driving rollers 20;
s5, discharging the broken construction waste through the blanking hopper 14 to finish the breaking.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a building rubbish concrete breaker which characterized in that, building rubbish concrete breaker includes:
a feed hopper (1);
the crushing device comprises a primary crushing cavity (4), wherein an impact type crushing assembly is arranged on the inner side of the primary crushing cavity (4);
the side plates (5) are fixed on a communicating cavity (8) communicated with the inner side of the primary crushing cavity (4), two movable blocking pieces (10) are symmetrically arranged between the two side plates (5), the two movable blocking pieces (10) are fixedly connected with the movable end of a bidirectional telescopic rod (11) arranged on one side plate (5), and the bidirectional telescopic rod (11) drives the two movable blocking pieces (10) to move oppositely or oppositely;
the two second crushing assemblies are respectively and rotatably arranged on the inner sides of the two movable stoppers (10), the two second crushing assemblies are connected with a motor (12) arranged on one movable stopper (10) through a transmission assembly, the transmission assembly can change along with the change of the distance between the two movable stoppers (10), and the transmission state of the two second crushing assemblies is kept;
the blanking hopper (14) is mounted at one end, far away from the communication cavity (8), of the side plate (5);
the second crushing assembly comprises a driving roller (20) rotatably mounted on the inner side of the movable stopper (10), spiral convex teeth (19) are fixedly mounted on the driving roller (20), and the spiral convex teeth (19) on the two driving rollers (20) are oppositely arranged;
the transmission assembly comprises a sliding assembly and a transmission shaft (24), the sliding assembly is slidably mounted on the side plate (5), the transmission shaft (24) is rotatably mounted on the sliding assembly, a second gear (22) is fixed on the transmission shaft (24), the second gear (22) is meshed with a first gear (21) fixed on one of the driving rollers (20), the transmission shaft (24) is further rotatably connected with the other driving roller (20) through a second transmission belt (18), and the other driving roller (20) is further rotatably connected with an output shaft of the motor (12) through a first transmission belt (13);
the transmission shaft (24) is movably connected with the two driving rollers (20) through a connecting assembly;
the connecting assembly comprises lantern rings (17) rotatably mounted on the transmission shaft (24) and the two driving rollers (20), and the lantern rings (17) mounted on the transmission shaft (24) are fixedly connected with the lantern rings (17) on the two driving rollers (20) through a first connecting rod (23) and a second connecting rod (16) respectively.
2. A construction waste concrete breaking device according to claim 1, characterized in that two first baffle plates (9) are symmetrically installed on the communicating chamber (8), and the first baffle plates (9) are slidably connected with the upper end surface of the movable stopper (10);
two second baffle plates (15) are symmetrically arranged on the blanking hopper (14), and the two second baffle plates (15) are in sliding connection with the lower end face of the movable stopper (10).
3. A construction waste concrete breaking device according to claim 1, characterized in that the side plates (5) are provided with embedded grooves at both sides, and both sides of the movable stopper (10) are inserted into and slidably connected with the embedded grooves.
4. A construction waste concrete breaking device according to claim 1, characterized in that the impact breaking assembly comprises a poking roller rotatably mounted in the primary crushing chamber (4) and a protruding member mounted on the side wall of the primary crushing chamber (4), and the poking plate pokes the construction waste falling into the primary crushing chamber (4) to impact with the protruding member.
5. A construction waste concrete breaking device according to claim 1, characterized in that the sliding assembly comprises a movable plate (7), the movable plate (7) is in sliding fit with a sliding groove (6) provided on the side plate (5), and the transmission shaft (24) is rotatably mounted on the movable plate (7).
6. A construction waste concrete crushing method, characterized in that the construction waste concrete crushing device according to any one of claims 1 to 5 is adopted, and the method comprises the following steps:
s1, starting a motor (12) and an impact type crushing assembly, then placing the construction waste into a feed hopper (1), and conveying the construction waste entering the feed hopper (1) into a primary crushing cavity (4) through a sealed conveying assembly;
s2, the construction waste entering the primary crushing cavity (4) is crushed by mutual impact under the action of the impact crushing assembly;
s3, the primarily crushed construction waste enters a secondary crushing cavity formed by two movable stoppers (10) and side plates (5) through a communicating cavity (8), and a motor (12) is matched with a transmission assembly to drive two driving rollers (20) to rotate oppositely so as to be matched with spiral raised teeth to perform secondary crushing on the construction waste;
s4, when the construction waste with different crushing degrees needs to be crushed, starting a bidirectional telescopic rod (11) to drive two movable stoppers (10) to move so as to change the size of a secondary crushing cavity and change the distance between two driving rollers (20);
s5, discharging the broken construction waste through a blanking hopper (14) to finish the breaking.
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CN202110906385.8A CN113578485B (en) | 2021-08-09 | 2021-08-09 | Construction waste concrete crushing device and method |
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CN202110906385.8A CN113578485B (en) | 2021-08-09 | 2021-08-09 | Construction waste concrete crushing device and method |
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CN113578485B true CN113578485B (en) | 2022-08-02 |
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CN104826694B (en) * | 2015-05-05 | 2017-12-19 | 长江大学 | Multi-functional stone crusher |
CN107335522A (en) * | 2017-07-27 | 2017-11-10 | 佛山市广师自动化科技有限公司 | A kind of adjustable building waste reducing mechanism |
CN107457037A (en) * | 2017-09-27 | 2017-12-12 | 佛山市深研信息技术有限公司 | A kind of environmentally friendly ore disintegrating apparatus |
CN111686859B (en) * | 2020-06-30 | 2021-10-01 | 河南银宗市政工程有限公司 | Building waste environmental protection processing apparatus |
CN213700058U (en) * | 2020-10-16 | 2021-07-16 | 山东科技大学 | Building rubbish smashes recovery and uses dust protected reducing mechanism |
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