CN111185290A - Waste material secondary screening system in gypsum board waste recycling process - Google Patents

Waste material secondary screening system in gypsum board waste recycling process Download PDF

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Publication number
CN111185290A
CN111185290A CN202010088089.7A CN202010088089A CN111185290A CN 111185290 A CN111185290 A CN 111185290A CN 202010088089 A CN202010088089 A CN 202010088089A CN 111185290 A CN111185290 A CN 111185290A
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CN
China
Prior art keywords
gypsum
cavity
separation
dust
paper scrap
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Granted
Application number
CN202010088089.7A
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Chinese (zh)
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CN111185290B (en
Inventor
梁云飞
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Bnbm Ningbo Co ltd
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Bnbm Ningbo Co ltd
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Priority to CN202010088089.7A priority Critical patent/CN111185290B/en
Publication of CN111185290A publication Critical patent/CN111185290A/en
Application granted granted Critical
Publication of CN111185290B publication Critical patent/CN111185290B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/02Arrangement of air or material conditioning accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool

Abstract

The invention discloses a waste secondary screening system in a gypsum board waste recycling process, which comprises a rotary screen, a gypsum paper scrap separation box and a crusher, wherein a feed inlet, a dust collection interface, a paper scrap outlet and a gypsum block outlet communicated with a feed inlet of the crusher are arranged on the gypsum paper scrap separation box, a coarse material chute of the rotary screen is connected with the feed inlet through an inclined angle conveyor, a discharge outlet of the crusher is communicated with a gypsum powder collecting box, a paper scrap outlet is communicated with a facing paper scrap collecting box, a gypsum paper scrap separation mechanism is arranged in the gypsum paper scrap separation box, and gypsum blocks are crushed into gypsum powder, so that the recycled waste is fully utilized, the automation of the gypsum board waste recycling process is realized, the recycling efficiency of the gypsum board waste is improved, and human resources are saved.

Description

Waste material secondary screening system in gypsum board waste recycling process
Technical Field
The embodiment of the invention relates to the technical field of gypsum board waste recovery, in particular to a waste secondary screening system in a gypsum board waste recycling process.
Background
The gypsum board is a material made of building gypsum as a main raw material, is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and good fire resistance, and is one of novel light boards which are intensively developed at present.
During the production of gypsum board, a certain amount of rejects is produced. The unqualified products are often crushed or rolled to become gypsum blocks and face-protecting paper scraps, and then the gypsum blocks and the face-protecting paper scraps are added into a rotary kiln together with desulfurized gypsum for calcination, so that the purpose of recycling is achieved.
However, since the rotary kiln itself does not have a pulverizing capability, a part of large gypsum lumps and mat paper dust cannot be directly used as a raw material for gypsum board production, and therefore, it is necessary to sieve them out by using a rotary sieve. The waste materials screened out before are continuously mixed with the desulfurized gypsum for recycling, and repeated recycling is caused due to low recycling rate, so that the waste of energy is caused. Moreover, the facing paper is usually bonded to the gypsum block by white latex, and the gypsum block is difficult to separate from the facing paper chips simply by a rotary screen, so that the facing paper chips are mixed in the produced gypsum board, and the quality of the gypsum board is reduced.
Disclosure of Invention
Therefore, the embodiment of the invention provides a waste secondary screening system in a gypsum board waste recycling process, which aims to solve the problems of energy waste and gypsum board quality reduction caused by low gypsum block recycling rate and incomplete gypsum block and facing paper scrap separation in the prior art.
In order to achieve the above object, the embodiment of the present invention discloses the following technical solutions:
the utility model provides a waste material secondary screening system in gypsum board waste recycling process, includes gyratory sieve, gypsum wastepaper separator box and breaker, install charge door, interface, wastepaper export of gathering dust on the gypsum wastepaper separator box, and with the gypsum piece export of breaker feed inlet intercommunication, the coarse fodder chute of gyratory sieve with connect through the inclination conveyer between the charge door, the discharge gate intercommunication of breaker has the gesso collecting box, wastepaper export intercommunication has the facing wastepaper collecting box, install gypsum wastepaper separating mechanism in the gypsum wastepaper separator box.
Further, be equipped with in the gypsum wastepaper separator box with the separation chamber of charge door intercommunication, connect be in the separation chamber bottom, and with the chamber is retrieved to the gypsum piece of gypsum piece export intercommunication, and connect separation chamber one side, and with the wastepaper of wastepaper export intercommunication retrieves the chamber, the interface of gathering dust with the wastepaper is retrieved the chamber and is linked together.
Furthermore, the gypsum paper scrap separating mechanism comprises a vibration hole comb, an impact plate, a main fan and an auxiliary fan, the vibration hole comb is installed between the separating cavity and the gypsum block recovery cavity, the impact plate is installed between the separating cavity and the gypsum block recovery cavity, an inclined guide plate which is inclined towards the paper scrap recovery cavity is arranged at the top end of the impact plate, and a face protecting paper scrap inlet which is communicated with the separating cavity and the paper scrap recovery cavity is arranged at the top end of the inclined guide plate;
the main fan is arranged on the wall of one side cavity of the separation cavity and is right opposite to the face protection paper scrap inlet, and the auxiliary fan is arranged on the wall of one side cavity of the gypsum block recovery cavity and faces the face protection paper scrap inlet obliquely above.
Furthermore, the coarse material chute of the rotary screen is connected with the input end of the inclination angle conveyor through a first pre-separation mechanism, the first pre-separation mechanism comprises a first pre-separation material barrel with openings at two ends and a dust recovery assembly arranged at the outlet end of the first pre-separation material barrel, a spiral groove is formed in the first pre-separation material barrel, and a plurality of rubber paper rubbing sheets are arranged on the wall of the spiral groove.
Further, inclination conveyer's output with it connects to divide mechanism in advance through the second between the charge door, the second is divided mechanism in advance and is included dust cover, second in advance and divide the feed cylinder to and vertical the installation divide the material baffle in the second in advance, pass through in the second in the pre-separation feed cylinder divide the material baffle to separate and have left chamber and right chamber, just right chamber is located and is close to one side in chamber is retrieved to the wastepaper, the exit end of dust cover install with divide material baffle matched with gravity feedback separation subassembly.
Furthermore, the dust recovery assembly comprises a dust collecting cavity sleeved at the outlet end of the first pre-separation charging barrel, a negative pressure dust suction pipe communicated with the interior of the dust collecting cavity is mounted on the dust collecting cavity, and a suction hole communicated with the negative pressure dust suction pipe is formed in one end, close to the inclined angle conveyor, of the dust collecting cavity.
Further, gravity feedback separator assembly is located directly over the left side chamber, gravity feedback separator assembly includes the pivot, rotates and installs epaxial feedback board is changeed to and the cover is established epaxial torsional spring rotates, the one end of torsional spring is installed in the pivot, and the other end is installed on the feedback board.
Further, the pivot horizontal installation be in on the one side inner wall of dust cover, just the feedback board is located directly over the left side chamber, the pivot offside install right chamber entry dog on the dust cover inner wall, the deflector block is located right side chamber with the feedback board top, the feedback board with be formed with between the dog of right side chamber entry and be used for with the direction of mask wastepaper the passageway in right side chamber.
Furthermore, the inlet end of the first pre-separation charging barrel is connected with the coarse material chute of the rotary screen in a sealing mode, and the inlet end of the second pre-separation charging barrel is connected with the charging opening in a sealing mode through a dustproof sleeve.
The embodiment of the invention has the following advantages:
(1) through the cooperation of the rotary screen, the inclination angle conveyor, the gypsum paper scrap separation box and the crusher, gypsum board waste is sequentially screened, conveyed, separated and crushed, and gypsum blocks are crushed into gypsum powder, so that the recycled waste is fully utilized, the automation of the gypsum board waste recovery process is realized, the recovery efficiency of the gypsum board waste is improved, and human resources are saved;
(2) the gypsum block and the face-protecting paper are separated by the first pre-separating mechanism and sequentially pass through the second pre-separating mechanism, the second pre-separating mechanism guides the gypsum block and the face-protecting paper scraps which enter sequentially, the gypsum block and the face-protecting paper scraps are sequentially distributed in the separating cavity in the horizontal direction, the face-protecting paper scraps are distributed on one side close to an inlet of the face-protecting paper scraps, the quick entering of the face-protecting paper scraps into the paper scrap recycling cavity is facilitated, the gypsum block and the face-protecting paper scraps are prevented from being mixed and falling into the separating cavity, the face-protecting paper scraps are prevented from being lifted easily, the face-protecting paper scraps are prevented from being carried into the gypsum block recycling cavity under the gravity effect of the gypsum block, the separating efficiency is improved, the energy consumption of a main fan and an auxiliary fan is reduced, and the quality of the recycled gypsum block is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a diagram illustrating the overall results of the first embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural view of a gypsum paper dust separation box according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first preseparation mechanism according to a second embodiment of the present invention;
FIG. 5 is a schematic view of a first preseparation cartridge in accordance with a second embodiment of the present invention;
FIG. 6 is a schematic view of a second pre-separation mechanism according to a second embodiment of the present invention.
In the figure:
1-a rotary screen; 2-gypsum paper scrap separation box; 3-a crusher; 4-a tilt conveyor; 5-a gypsum powder collecting box; 6-paper scrap collecting box; 7-a feed inlet; 8-dust collecting interface; 9-a paper scrap outlet; 10-gypsum block outlet; 11-a counterattack plate; 12-a main fan; 13-an auxiliary fan; 14-an inclined guide plate; 15-a paper scrap inlet; 16-right chamber inlet stop; 17-a first pre-separation mechanism; 18-a second pre-separation mechanism; 19-shock-absorbing dust-proof sleeve; 20-vibrating hole grate;
201-a separation chamber; 202-a gypsum block recovery chamber; 203-wastepaper recovery chamber;
1701-first pre-separation cartridge; 1702-dust recovery assembly; 1703-helical groove; 1704-rubber paper twisting sheets;
1702 a-a dust collection chamber; 1702 b-a suction hose; 1702 c-suction hole;
1801-a dust cover; 1802-a second pre-separation cartridge; 1803-distributing partition board; 1804-a gravity feedback separation assembly;
1802 a-left lumen; 1802 b-right lumen;
1804 a-feedback board; 1804 b-shaft; 1804 c-torsion spring.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
As shown in fig. 1 and 3, the invention discloses a waste secondary screening system in a gypsum board waste recycling process, which comprises the following embodiments:
including gyratory sieve 1, gypsum wastepaper separator box 2 and breaker 3, install charge door 7 on the gypsum wastepaper separator box 2, interface 8 gathers dust, wastepaper export 9, and the gypsum piece export 10 with 3 feed inlets of breaker intercommunication, be connected through inclination conveyer 4 between gyratory sieve 1's coarse fodder chute and the charge door 7, breaker 3's discharge gate intercommunication has gypsum powder collecting box 5, wastepaper export 9 intercommunication has mask wastepaper collecting box 6, install gypsum wastepaper separating mechanism in the gypsum wastepaper separator box 2.
Gypsum board waste material is sieved through rotary screen 1 after, discharges the great piece of granule by the coarse fodder chute, and on the horizontal input of 4 bottoms at inclination conveyer was fallen to the discharged gypsum piece, through the operation of inclination conveyer 4, carried the gypsum piece of bottom on the output on its top, then fallen into in below gypsum paper bits separator box 2 by the output. The gypsum paper scrap separating mechanism in the gypsum paper scrap separating box 2 separates gypsum blocks mixed with facing paper scraps, the separated facing paper scraps are discharged into the facing paper scrap collecting box through a paper scrap outlet 9, the separated gypsum blocks are discharged into the crusher 3 through a gypsum block outlet 10, the gypsum blocks are further crushed through the crusher 3, and the prepared gypsum powder is discharged into the gypsum powder collecting box 5. In the process, dust in the gypsum paper scrap separation box 2 is absorbed by recovery equipment connected with the dust collection interface 8.
Through the cooperation of the rotary screen, the inclination angle conveyor, the gypsum paper scrap separation box and the crusher, gypsum board waste is sequentially screened, conveyed, separated and crushed, and gypsum blocks are crushed into gypsum powder, so that the recycled waste is fully utilized, the automation of the gypsum board waste recovery process is realized, the recovery efficiency of the gypsum board waste is improved, and human resources are saved; through the cooperation of gyratory sieve, inclination conveyer, gypsum wastepaper separator box and breaker, sieve, carry, separate and smash gypsum board waste material in proper order, the gypsum piece is smashed into the gesso for the waste material of retrieval and utilization obtains make full use of, and has realized the automation of gypsum board waste recovery process, has improved the recovery efficiency of gypsum board waste material, has practiced thrift manpower resources.
Wherein, be equipped with in the gypsum wastepaper separator box 2 with the separation chamber 201 of feed inlet intercommunication, connect the gypsum piece recovery chamber 202 with gypsum piece export 10 intercommunication in the separation chamber 201 bottom to and connect the wastepaper recovery chamber 203 with wastepaper export 9 intercommunication in separation chamber 201 one side, the interface 8 that gathers dust is installed on wastepaper recovery chamber 203.
Further, gypsum wastepaper separating mechanism includes vibrations hole comb 20, counterattack board 11, main fan 12 and auxiliary fan 13, vibrations hole comb 20 is installed between separation chamber 201 and gypsum piece recovery chamber 202, counterattack board 11 is installed between gypsum board and gypsum piece recovery chamber 202, and the top of counterattack board 11 is equipped with the slope baffle 14 that the chamber 203 was retrieved to the wastepaper to the slope, slope baffle 14 top is equipped with the protecting face wastepaper entry 15 that communicates separation chamber 201 and gypsum piece recovery chamber 203, slope baffle 14 has reduced the resistance that the protecting face wastepaper of counterattack board 11 upper end department got into protecting face wastepaper entry 15. The main fan 12 is installed on the wall of the separation cavity 201 opposite to the wall of one side cavity of the impact plate 11 and is just opposite to the face-protecting paper scrap inlet 15, the auxiliary fan 13 is installed on the wall of one side cavity of the gypsum block recovery cavity 202 opposite to the impact plate 11 and faces the face-protecting paper scrap inlet 15 obliquely above, and electric louver valves are installed at the inlet ends of the main fan 12 and the auxiliary fan 13.
Specifically, the gypsum block mixed with the face protection paper scraps enters the separation box through the feeding port 7, and in the falling process of the separation box, a part of face protection paper scraps mixed in the gypsum block are blown to the face protection paper scrap inlet 15 on the right side by the horizontal rightward airflow blown by the main fan 12 on the left side, then enter the paper scrap recovery cavity 203 and fall into the face protection paper scrap collection box; in the process that the other part of the face protection paper scraps falls down to the vibration hole comb 20 along with the gypsum blocks, the face protection paper scraps with lighter texture are blown to the upper right face protection paper scrap inlet 15 by the airflow blown by the auxiliary fan 13 and enter the paper scrap recovery cavity 203 under the drive of the horizontal airflow blown by the main fan 12, so that the separation of the gypsum blocks and the face protection paper scraps is realized. Vibrations hole comb 20 is general including the sieve and install the vibrating motor on the sieve, when the gypsum piece falls to vibrations hole comb 20 on, on the one hand, the less gypsum piece of granule directly falls into the gypsum piece recovery chamber 202 of below through the sieve mesh on vibrations hole comb 20, and on the other hand, the more gypsum piece of granule is under vibrations hole comb 20's fierce vibrations, and cracked into the less gypsum piece of granule gradually, then fall into the gypsum piece recovery chamber 202 of below through the sieve mesh on vibrations hole comb 20, the gypsum piece that the chamber 202 was retrieved to the gypsum piece falls into the breaker of below again, fall into gypsum powder collecting box 5 after smashing, thereby obtain purer gypsum powder.
Because the auxiliary fan 13 is located in the gypsum block recovery cavity 202, the air flow blown obliquely upwards to the vibration is naturally diffused under the action of air resistance and is distributed at the bottom end of the vibration hole comb 20, and the air flow flows upwards to form an air flow barrier, so that the protective paper scraps are prevented from falling into the gypsum block recovery cavity 202, and the protective paper scraps in the separation cavity 201 are lifted after the air flow passes through the sieve holes on the vibration hole comb 20 and are blown to the protective paper scrap inlet 15.
As shown in fig. 2, in the second embodiment of the invention, a first preseparating mechanism 17 and a second preseparating mechanism 18 are further included, specifically:
as shown in fig. 4 and 5, the coarse material chute of the rotary screen 1 is connected with the input end of the inclined angle conveyor 4 through a first pre-separation mechanism 17, the first pre-separation mechanism 17 includes a first pre-separation cylinder 1701 with openings at both ends, a spiral groove 1703 is arranged in the first pre-separation cylinder 1701, and a plurality of rubber paper twisting sheets which are spirally distributed are installed on the outer ring wall of the spiral groove 1703.
The gypsum block dropped from the rotary screen 1 into the first pre-separation cylinder 1701 moves spirally along the spiral groove 1703 under its own gravity, and rubs against the rubber washboard, which avoids roughness, on the peripheral groove wall of the spiral groove 1703 under the centrifugal force. When the mask paper on the surface of the gypsum block is contacted with the rubber paper rubbing piece, the mask paper is rubbed down from the surface of the gypsum block under the action of friction force, so that the gypsum block is separated from the mask paper; when the gypsum block is contacted with the rubber paper rubbing piece, the gypsum block rolls under the action of friction force, and the protective paper on the gypsum block can be contacted with the rubber paper rubbing piece through the rolling of the gypsum block.
After the gypsum blocks are separated from the mask paper, the gypsum blocks have higher kinetic energy and speed due to different qualities of the gypsum blocks and the mask paper, and can preferentially pass through the spiral grooves 1703, and then the mask paper scraps fall off from the spiral grooves 1703, so that the gypsum blocks and the mask paper scraps are preliminarily separated, and the separated gypsum blocks and the mask paper scraps successively fall on the inclination angle conveyor 4.
As shown in fig. 6, the output end of the tilt angle conveyor 4 is connected with the feed inlet 7 through a second pre-separation mechanism 18, the second pre-separation mechanism 18 includes a dust cover 1801, a second pre-separation cartridge 1802, and a material separation partition 1803 vertically installed in the second pre-separation cartridge 1802, a left cavity 1802a and a right cavity 1802b are separated in the second pre-separation cartridge 1802 through the material separation partition 1803, the right cavity 1802b is located at a side close to the paper scrap recovery cavity 203, and a gravity feedback separation assembly 1804 matched with the material separation partition 1803 is installed at the outlet end of the dust cover 1801.
The gypsum block and the face protection paper scrap on the inclined angle conveyor 4 fall into the second pre-separation cylinder 1802 through the dust covers 1801, the gravity feedback separation assembly 1804 utilizes the gravity difference of the gypsum block and the face protection paper scrap to guide the gypsum block and the face protection paper scrap into the left cavity 1802a and the right cavity 1802b respectively, the right cavity 1802b is close to the paper scrap recovery cavity 203, the face protection paper scrap can enter the paper scrap recovery cavity 203 quickly, the gypsum block and the face protection paper scrap are prevented from being mixed and falling into the separation cavity 201, the face protection paper scrap is prevented from being lifted easily, the face protection paper scrap is caused to be carried into the gypsum block recovery cavity 202 under the action of the gravity of the gypsum block, the face protection paper scrap and the gypsum block separation efficiency is improved, the energy consumption of the main fan 12 and the auxiliary fan 13 is reduced, the quality of the recovered gypsum block is improved, and the production quality of gypsum boards is improved.
In addition, a dust recovery assembly 1702 is installed at the outlet end of the pre-separation cylinder, the dust recovery assembly 1702 comprises a dust collecting cavity 1702a sleeved at the outlet end of the first pre-separation cylinder 1701, a dust cavity is arranged in the dust collecting cavity 1702a, a negative pressure dust suction pipe 1702b communicated with the dust cavity is installed on the dust collecting cavity 1702a, the end part of the dust collecting cavity 1702a close to the input end of the inclined angle conveyor 4 is circumferentially provided with a plurality of suction holes 1702c communicated with the dust cavity, the outlet end of the negative pressure dust suction pipe 1702b is connected with a dust collector or other recovery equipment with the same function, so that negative pressure is formed in the dust cavity, air and dust at the bottom of the dust collecting cavity 1702a enter the recovery equipment through a dust suction port, the dust cavity and the negative pressure dust suction pipe 1702b in sequence to be collected, on one hand, dust is prevented from being raised when gypsum blocks fall onto the inclined angle conveyor 4 through a coarse material, on the other hand, the method is favorable for improving the yield of the recovered gypsum powder and saving the production cost.
Wherein, gravity feedback separation subassembly 1804 is located directly over left chamber 1802a, and gravity feedback separation subassembly 1804 includes pivot 1804a, feedback board 1804b of pivot installation on pivot 1804a to and the torsional spring 1804c of cover setting on pivot 1804a, and the one end of torsional spring 1804c is installed on pivot 1804a, and the other end is installed on feedback board 1804 b. When no material falls in the dust cap 1801, the feedback plate 1804b covers the entrance at the top of the left cavity 1802a, the right side of the feedback plate 1804b can rotate downwards around the rotating shaft 1804a at the left side, the right side of the feedback plate 1804b inclines downwards to the right cavity 1802b, and the inclined state of the feedback plate 1804b is maintained through the torsion spring 1804 c; when light facing paper scraps fall on the feedback plate 1804b, the feedback plate 1804b cannot rotate against the resistance of the torsion spring 1804c due to the light weight of the facing paper scraps, so that the inlet of the left cavity 1802a cannot be opened, and materials slide into the right cavity 1802b along the inclined feedback plate 1804 b; conversely, when a heavier weight gypsum block lands on the feedback plate 1804b, the feedback plate 1804b is driven to rotate against the resistance of the torsion spring 1804c, tilting the feedback plate 1804b to the right to the left chamber 1802a and exposing the entrance to the covered left chamber 1802a, thereby allowing the gypsum block to slide along the feedback plate 1804b into the left chamber 1802 a.
The gypsum blocks and the face-protecting paper are separated by the first pre-separating mechanism 17 and successively pass through the second pre-separating mechanism 18, the gypsum blocks and the face-protecting paper scraps which successively enter are guided by the second pre-separating mechanism 18, so that the gypsum blocks and the face-protecting paper scraps are sequentially distributed in the separating cavity 201 from left to right in the horizontal direction, the face-protecting paper scraps are favorably flown into the paper scrap recycling cavity 203 on the right side, and the separating efficiency and the separating quality of the gypsum block face-protecting paper scrap separating box are improved.
To supplement the above, the rotary shaft 1804a is horizontally installed on the inner wall of one side of the dust cover 1801, the feedback plate 1804b is located right above the left cavity 1802a, the inner wall of the dust cover 1801 opposite to the rotary shaft 1804a is installed with the right cavity inlet block 16, the guide plate block is located above the right cavity 1802b and the feedback plate 1804b, and a channel for guiding the facing paper chips to the right cavity 1802b is formed between the feedback plate 1804b and the right cavity inlet block 16. The entrance block 16 of the right chamber 1802b shields the entrance of the right chamber 1802b, preventing the gypsum block from entering the right chamber 1802b, and a passage for the facing paper chips to pass through is left between the feedback plate 1804b and the entrance block 16 of the right chamber, so that the facing paper chips can flow into the right chamber 1802b through the passage. The right chamber inlet block 16 is triangular with a sharp corner facing the side of the feedback plate 1804b, one portion of the gypsum block falls directly onto the feedback plate 1804b, the other portion of the gypsum block falls on a beveled edge at the top of the right chamber inlet block 16 and slides towards the feedback plate 1804b, and the two portions of the gypsum block provide power for driving the feedback plate 1804b to rotate together.
Preferably, the inlet end of the first pre-separation cylinder 1701 and the coarse material chute of the rotary screen 1 are connected in a sealing mode through the dustproof sleeve 19, the second pre-separation cylinder 1802 and the feed opening 7 are connected in a sealing mode, the rotary screen 1 is prevented from being rigidly connected with the first pre-separation cylinder 1701 while dust is prevented from overflowing, and the second pre-separation cylinder 1802 is prevented from being rigidly connected with the feed opening 7, so that the defect that the service life of the connection part is shortened due to vibration of equipment work is caused.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. The utility model provides a waste material secondary screening system of gypsum board waste recycling in-process, its characterized in that, including gyratory sieve (1), gypsum wastepaper separator box (2) and breaker (3), install charge door (7), interface (8), wastepaper export (9) gather dust on gypsum wastepaper separator box (2), and with gypsum piece export (10) of breaker (3) feed inlet intercommunication, the coarse fodder chute of gyratory sieve (1) with connect through inclination conveyer (4) between charge door (7), the discharge gate intercommunication of breaker (3) has gypsum powder collecting box (5), wastepaper export (9) intercommunication has mask wastepaper collecting box (6), install gypsum wastepaper separating mechanism in gypsum wastepaper separator box (2).
2. The waste secondary screening system in the gypsum board waste recycling process according to claim 1, characterized in that a separation chamber (201) communicated with the feed inlet (7), a gypsum block recovery chamber (202) connected to the bottom end of the separation chamber (201) and communicated with the gypsum block outlet (10), and a paper dust recovery chamber (203) connected to one side of the separation chamber (201) and communicated with the paper dust outlet (9) are arranged in the gypsum paper dust separation box (2), and the dust collection interface (8) is communicated with the paper dust recovery chamber (203).
3. The waste secondary screening system in the gypsum board waste recycling process is characterized in that the gypsum paper scrap separating mechanism comprises a vibrating hole grate (20), an impact plate (11), a main fan (12) and a secondary fan (13), the vibrating hole grate (20) is installed between the separating cavity (201) and the gypsum block recycling cavity (202), the impact plate (11) is installed between the separating cavity (201) and the gypsum block recycling cavity (202), the top end of the impact plate (11) is provided with an inclined guide plate (14) which inclines towards the paper scrap recycling cavity (203), and the top end of the inclined guide plate (14) is provided with a facing paper scrap inlet (15) which is communicated with the separating cavity (201) and the paper scrap recycling cavity (203);
the main fan (12) is installed on the wall of one side cavity of the separation cavity (201) and is right opposite to the face protection paper scrap inlet (15), and the auxiliary fan (13) is installed on the wall of one side cavity of the gypsum block recovery cavity (202) and faces the face protection paper scrap inlet (15) obliquely upward.
4. The waste secondary screening system in the gypsum board waste recycling process is characterized in that a coarse material chute of the rotary screen (1) is connected with an input end of the inclined angle conveyor (4) through a first pre-separation mechanism (17), the first pre-separation mechanism (17) comprises a first pre-separation barrel (1701) with two open ends, and a dust recovery assembly (1702) installed at an outlet end of the first pre-separation barrel (1701), a spiral groove (1703) is arranged in the first pre-separation barrel (1701), and a plurality of rubber paper rubbing sheets (1704) are installed on the wall of the spiral groove (1703).
5. The waste secondary screening system in the gypsum board waste recycling process is characterized in that the output end of the inclined angle conveyor (4) is connected with the feeding port (7) through a second pre-separation mechanism (18), the second pre-separation mechanism (18) comprises a dust cover (1801), a second pre-separation barrel (1802), and a separating partition plate (1803) vertically installed in the second pre-separation barrel (1802), a left cavity (1802a) and a right cavity (1802b) are separated in the second pre-separation barrel (1802) through the separating partition plate (1803), the right cavity (1802b) is located on one side close to the paper scrap recovery cavity (203), and a gravity feedback separation assembly (1804) matched with the separating partition plate (1803) is installed at the outlet end of the dust cover (1801).
6. The waste secondary screening system in the gypsum board waste recycling process of claim 4, wherein the dust recycling assembly (1702) comprises a dust collecting cavity (1702a) sleeved at the outlet end of the first pre-separation cylinder (1701), an underpressure dust collecting pipe (1702b) communicated with the interior of the dust collecting cavity (1702a) is installed on the dust collecting cavity (1702a), and a suction hole (1702c) communicated with the underpressure dust collecting pipe (1702b) is formed at one end of the dust collecting cavity (1702a) close to the inclined angle conveyor (4).
7. The system of claim 5, wherein the gravity feedback separation assembly (1804) is located directly above the left chamber (1802a), the gravity feedback separation assembly (1804) includes a shaft (1804a), a feedback plate (1804b) rotatably mounted on the shaft (1804a), and a torsion spring (1804c) sleeved on the shaft (1804a), one end of the torsion spring (1804c) is mounted on the shaft (1804a) and the other end is mounted on the feedback plate (1804 b).
8. The system of claim 7, wherein the shaft (1804a) is horizontally mounted on the inner wall of one side of the dust cover (1801), the feedback plate (1804b) is located directly above the left cavity (1802a), the inner wall of the dust cover (1801) on the opposite side of the shaft (1804a) is mounted with a right cavity inlet block (16), the flow guide plate block is located above the right cavity (1802b) and the feedback plate (1804b), and a channel for guiding the facing paper dust to the right cavity (1802b) is formed between the feedback plate (1804b) and the right cavity inlet block (16).
9. The waste secondary screening system of gypsum board waste recycling process of claim 5, characterized in that the inlet end of the first pre-separation cylinder (1701) and the coarse chute of the rotary screen (1), and the inlet end of the second pre-separation cylinder (1802) and the feed opening (7) are connected in a sealing way by a dustproof sleeve (19).
CN202010088089.7A 2020-02-12 2020-02-12 Waste material secondary screening system in gypsum board waste recycling process Active CN111185290B (en)

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JP2002282790A (en) * 2001-03-26 2002-10-02 Kurimoto Ltd Crushed sand manufacturing device
CN1898034A (en) * 2003-12-22 2007-01-17 吉野石膏株式会社 Method and device for collecting base paper for gypsum plaster board
CN205463194U (en) * 2016-01-08 2016-08-17 潜山县金福农业科技有限公司 Trichosanthes seed sieving mechanism
CN205701814U (en) * 2016-03-24 2016-11-23 北新集团建材股份有限公司 Useless plate retracting device on a kind of gypsum lath product line
CN208960385U (en) * 2018-08-17 2019-06-11 北京建工资源循环利用投资有限公司 A kind of vibration based on density contrast and the compound screening installation of wind-force
CN209502263U (en) * 2018-11-30 2019-10-18 任富 A kind of drum type brake material slag leaf separation sorting complete set of equipments

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002282790A (en) * 2001-03-26 2002-10-02 Kurimoto Ltd Crushed sand manufacturing device
CN1898034A (en) * 2003-12-22 2007-01-17 吉野石膏株式会社 Method and device for collecting base paper for gypsum plaster board
CN205463194U (en) * 2016-01-08 2016-08-17 潜山县金福农业科技有限公司 Trichosanthes seed sieving mechanism
CN205701814U (en) * 2016-03-24 2016-11-23 北新集团建材股份有限公司 Useless plate retracting device on a kind of gypsum lath product line
CN208960385U (en) * 2018-08-17 2019-06-11 北京建工资源循环利用投资有限公司 A kind of vibration based on density contrast and the compound screening installation of wind-force
CN209502263U (en) * 2018-11-30 2019-10-18 任富 A kind of drum type brake material slag leaf separation sorting complete set of equipments

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