CN111687124A - Pretreatment device for waste solids of neodymium iron boron waste parts and use method - Google Patents

Pretreatment device for waste solids of neodymium iron boron waste parts and use method Download PDF

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Publication number
CN111687124A
CN111687124A CN202010569531.8A CN202010569531A CN111687124A CN 111687124 A CN111687124 A CN 111687124A CN 202010569531 A CN202010569531 A CN 202010569531A CN 111687124 A CN111687124 A CN 111687124A
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China
Prior art keywords
machine body
plate
shell
waste
air
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Granted
Application number
CN202010569531.8A
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Chinese (zh)
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CN111687124B (en
Inventor
刘勇
张相良
张华�
谢志忠
郭建
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Xinfeng Baogang Xinli Rare Earth Co Ltd
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Xinfeng Baogang Xinli Rare Earth Co Ltd
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Application filed by Xinfeng Baogang Xinli Rare Earth Co Ltd filed Critical Xinfeng Baogang Xinli Rare Earth Co Ltd
Priority to CN202010569531.8A priority Critical patent/CN111687124B/en
Publication of CN111687124A publication Critical patent/CN111687124A/en
Priority to PCT/CN2021/092313 priority patent/WO2021254020A1/en
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Publication of CN111687124B publication Critical patent/CN111687124B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/08Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/402Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
    • 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
    • B07B1/06Cone or disc shaped 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
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/10Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/102Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
    • 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
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/04Multiple deck screening devices comprising one or more superimposed screens

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a pretreatment device for waste solids of neodymium iron boron waste pieces, and relates to the technical field of neodymium iron boron waste processing. In the present application, a pretreatment apparatus includes: a body, the body comprising: the partition plate is arranged inside the inner shell; discharging device sets up the below at the organism, and discharging device includes: the first discharging plate is arranged below the machine body; the second discharging plate is arranged below the machine body and is opposite to the first discharging plate; the first rotating rod is arranged below the machine body; the second rotating rod is arranged below the machine body; the stirring device is arranged in the machine body; the layering device is arranged inside the machine body; the air jet system sets up the inside at the organism, and the air jet system includes: the casing is arranged inside the machine body. The invention is used for solving the problems that in the prior art, the complete impurity separation cannot be carried out when the waste solids of the neodymium iron boron waste are cleaned, the cleaning process adopts unified cleaning, the waste solids and the impurities are repeatedly separated, and the cleaning effect is poor due to the adhesion process.

Description

Pretreatment device for waste solids of neodymium iron boron waste parts and use method
Technical Field
The invention relates to the technical field of neodymium iron boron waste processing, in particular to a neodymium iron boron waste piece waste solid pretreatment device and a using method thereof.
Background
Neodymium iron boron waste material is the main one type of present tombarthite permanent magnetism waste material, and neodymium iron boron waste material generally has likepowder, graininess, cubic, muddy, some water content is many, and some water content is less, and some soak in liquid, some samples present different color and smell, and the volatile component content of most samples is lower. The recovery of neodymium iron boron waste is more convenient than the direct crushing of ore to obtain rare earth resources, because the rare earth content in neodymium iron boron waste is far higher than the ore content.
The neodymium iron boron waste materials are required to be recycled and processed, the neodymium iron boron waste materials are recycled mainly through a plurality of steps of roasting, acid dissolution, filtration, extraction and the like, however, in order to ensure the processing effect of the recycling and processing process, the waste materials are usually cleaned before the processing process, the oil stain glue and the like carried on the surfaces of leftover materials are reduced, but the existing cleaning device cannot perform a good cleaning effect, the existing waste materials are put into the cleaning device and then are cleaned through common stirring, then the cleaning barrel is taken out, the impurities which cannot be cleaned and cleaned well on the waste materials can not be well removed on the surfaces of the waste materials through the cleaning, and the cleaning device is cleaned through separation and screening, although the cleaned impurities can be separated from the waste materials, the impurities are only automatically separated from the waste materials during cleaning, and the separation effect cannot be ensured, and the neodymium iron boron waste material is only roughly cleaned by adopting large-scale simultaneous cleaning, and partial impurities are adhered to the surface of the neodymium iron boron waste material, so that the content of the recycled rare earth is easily reduced in the recycling process.
Disclosure of Invention
The invention aims to provide a pretreatment device for waste solids of neodymium iron boron waste, which is used for solving the problems that in the prior art, the waste solids of the neodymium iron boron waste cannot be completely separated from impurities during cleaning, and the cleaning effect is poor due to repeated separation and adhesion of the waste solids and the impurities caused by uniform cleaning in the cleaning process.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a pretreatment device comprising: a body, the body comprising: the partition plate is arranged inside the inner shell, and the periphery of the partition plate is attached and connected with the inner wall of the inner shell; discharging device, this discharging device sets up in the below of this organism, this discharging device and this organism fixed connection, and this discharging device includes: the first discharging plate is arranged below the machine body and is movably connected with the machine body; the second discharging plate is arranged below the machine body and movably connected with the machine body, and the second discharging plate is opposite to the first discharging plate; the first rotating rod is arranged below the machine body, and one end of the first rotating rod is connected with the surface of the first discharging plate; the second rotating rod is arranged below the machine body, and one end of the second rotating rod is connected with the surface of the second discharging plate; the stirring device is arranged inside the machine body and is fixedly connected with the machine body; the layering device is arranged inside the machine body and fixedly connected with the machine body; air jet system, this air jet system sets up the inside at this organism, this air jet system and this organism fixed connection, and this air jet system includes: the casing, this casing sets up in the inside of this organism, and this casing is used for spouting to this organism inside.
In the technical scheme, the embodiment of the application firstly cleans and removes impurities in waste materials through the combination installation of the layering device, the stirring device and the air injection device before the waste and solid of the neodymium iron boron waste is recovered and treated, so that the recovery treatment process achieves a better effect, a large amount of waste and solid are firstly layered through the layering device after the waste materials enter the inner shell, the phenomenon that the cleaning effect is poor due to the fact that a large amount of waste and solid are accumulated in the inner shell is prevented, the waste and solid are not easy to be cleaned completely, the layering device firstly layers the large amount of waste and solid to divide the waste and solid into a plurality of areas, the occupied amount in the same space is reduced, the cleaning effect is improved, the multi-area separation can also reduce the problem that the rotating shaft is easy to damage the rotating shaft when the rotating shaft stirs the large amount of waste and solid in the stirring process, and simultaneously, the air injection device performs air discharge through the device in the shell, thereby make the inside bubble that produces of useless solid mixed liquid of useless piece, thereby the bubble is followed liquid and is inwards floated and contact the useless solid of useless piece and further improve the cleaning performance.
Further, in an embodiment of the present invention, the body includes: a housing, the interior of which is hollow; the inner shell is arranged in the outer shell, the outer shell is attached to the inner shell, and the inner part of the inner shell is hollow; a vent disposed inside the outer shell, the vent passing through a surface of the outer shell and a surface of the inner shell; the feeding port is arranged above the shell and fixedly connected with the shell; the base is arranged below the shell and fixedly connected with the lower surface of the shell, an accommodating space is arranged between the base and the shell, and the discharging device is arranged in the accommodating space; the water outlet valve is arranged in the outer shell and penetrates through the outer shell to enter the inner shell; a sealing motor disposed at an outer periphery of the housing; the sealing rod is arranged inside the inner shell, rotates inside the inner shell and is connected with the sealing motor.
Further, in the embodiment of the present invention, the air injection device is disposed above the partition plate, and a space is disposed between the air injection device and the partition plate; the middle of the partition board is provided with a through hole; the sealing motor is connected with the sealing rod through a belt, and the sealing motor controls the sealing rod to rotate.
Further, in the embodiment of the present invention, the discharging device further includes: the supporting rod is arranged below the machine body, one end of the supporting rod is connected with the other end of the first rotating rod and the other end of the second rotating rod, and the supporting rod, the first rotating rod and the second rotating rod form a Y shape; the flexible motor, this flexible motor setting is in one side of this bracing piece, and the flexible end of this flexible motor is connected with the interlude of this first dwang, and this flexible motor is provided with two, and the flexible end of another this flexible motor is connected with the interlude of this second dwang.
Further, in an embodiment of the present invention, the stirring device includes: the driving motor is arranged above the machine body; the rotating shaft is arranged in the machine body, penetrates through the upper surface of the machine body and enters the machine body, one end of the rotating shaft penetrating into the machine body is inserted into the partition plate, and the rotating shaft is controlled to rotate by the driving motor; the first rotating blade is arranged on the periphery of the rotating shaft and fixedly connected with the rotating shaft; the second rotating blade is arranged on the periphery of the rotating shaft and fixedly connected with the rotating shaft; the pushing block is arranged on the outer side of the second rotating blade and is fixedly connected with the second rotating blade.
Further, in the embodiment of the present invention, two sets of the first rotating blades are provided, and a gap is provided between the two sets of the first rotating blades; the second rotating blades are arranged in two groups, the two groups of second rotating blades are arranged between the two groups of first rotating blades, and a space is arranged between the first rotating blades and the second rotating blades.
Further, in an embodiment of the present invention, the layering device includes: the layered plate is arranged in the machine body and positioned above the partition plate, and the periphery of the layered plate is attached and connected with the inner wall of the machine body; the closing disc is arranged in the middle of the layered plate and is movably connected with the layered plate, and the closing disc and the layered plate are arranged in the same circle center. The periphery of this closing disc is provided with the pinion rack, and this closing disc is connected with this sealing rod cooperation, and the periphery of this sealing rod is provided with the gear, and this closing disc meshes with this sealing rod mutually, and this closing disc rotates through this sealing rod and utilizes the circular through-hole laminating realization of ring and this layering board to seal and open and shut.
Further, in the embodiment of the invention, the surface of the layered plate is provided with a circular through hole, and the middle of the layered plate is provided with a space for accommodating the closing disc; the closed disc is composed of a circular ring, and the inner ring of the closed disc is attached to a connecting circular ring arranged in the middle of the layered plate; the lamination board and the closing disc are provided with three, each lamination board and each closing disc form a group of lamination devices, and three groups of intervals are arranged between the lamination board and the closing disc.
Further, in an embodiment of the present invention, the gas injection device includes: the shell is arranged in the machine body, the outer side surface of the shell is attached and connected with the inner wall of the machine body, and an accommodating space is arranged in the shell; a ventilation hole provided at an outer side surface of the case; the pushing plate is arranged inside the shell and is movably connected with the shell; the air flow channel is arranged in the shell, and one end of the air flow channel is connected with the air vent; the air storage bag is arranged in the shell, one end of the air storage bag is connected with the airflow channel, and the other end of the air storage bag is matched with the push plate; the air jet is arranged in the shell and arranged at the flow section of the airflow channel, and the air jet is communicated with the airflow channel; the filter plate is arranged inside the air jet port, is positioned at the air outlet end of the air jet port and is fixedly connected with the air jet port; the sealing ball is arranged inside the air jet, is positioned on the left side of the filter plate and rolls inside the air jet; and the sealing gasket is arranged inside the ventilation hole and movably arranged inside the ventilation hole.
Furthermore, in the embodiment of the present invention, a groove is disposed in the middle of the casing, one end of the push plate passes through the surface of the groove of the casing, and the other end of the push plate is attached to the other end of the air storage bag; the pushing plate is used for extruding the air storage bag to push the internal airflow into the airflow channel; the air injection devices are arranged in two groups, every four air injection devices form one group, and a space is arranged between the air injection devices. The pushing plate penetrates through one end of the surface of the groove of the shell and is connected with the pushing block in a matching mode, the pushing block is arranged to be a square block, the main body of the pushing block is a triangle, the two opposite sides of the square are provided with triangles, the triangular side of the pushing block is attached to one end of the pushing plate, the surface of the pushing block is provided with a rectangular strip which is transversely arranged, the rectangular strip of the pushing block is matched with the arc-shaped groove of the pushing plate, and the pushing plate drives the pushing block to extrude the air storage bag when rotating through the second rotating blade; the air injection device and the layering device are arranged in a staggered mode.
The embodiment of the invention also discloses a use method of the pretreatment device for the waste solids of the neodymium iron boron waste parts, which comprises the following steps:
distributing materials, namely pouring neodymium iron boron waste solids into the machine body through material inlet openings, enabling the neodymium iron boron waste solids to fall into an inner shell through four material inlet openings, separating the neodymium iron boron waste solids through a first layering device, stopping part of the waste solids on the surface of the first layering device, and sequentially separating a large amount of waste solids through a second layering device and a third layering device;
layering and mixing, namely adding cleaning fluid after layering of waste parts and waste solids, then driving a sealing rod to rotate by a sealing motor, rotating a closing disc under the rotation of the sealing rod, aligning each circular ring of the closing disc with a circular through hole of a layering plate so as to realize sealing and closing, and separately separating the waste parts and the waste solids of different sizes;
stirring and mixing, after the closed disc and the laminated plate are fixed, driving a motor to drive a rotating shaft to rotate, and stirring different waste solids separated by the laminated plate by the rotating shaft to fully mix the cleaning solution and the waste solids;
the ejection of compact filters, after the stirring is mixed and is accomplished, sealed motor drives the sealing rod and rotates in opposite direction and separates closing disc and layering board and the inside sealed axle of rotation axis is lifted through the jacking motor of organism top thereby will insert the part in the division board and extract, the useless solid of useless spare in the inner shell flows through the through-hole of division board with the washing liquid, the useless solid of useless spare falls in first stripper and second stripper top after flowing with the washing liquid, discharge the washing liquid through the outlet valve that the shell set up, then the useless solid of useless spare after the washing is discharged through first stripper and second stripper.
Further, the embodiment of the invention also discloses: the stirring and mixing process also comprises the following steps: the air is mixed, the pushing block outside the second rotating blade can contact with the pushing plate while the rotating shaft rotates, after the push block is contacted with the push plate, the rotating force of the second rotating blade can enable the push block to press the push plate to move, when the pushing plate moves along the arc of the casing of the air injection device, the air storage bag is forced to convey air to the air flow channel, the flowing air can extrude the sealing gasket in the ventilation hole, the sealing gasket plugs the outlet of the ventilation hole, the residual air in the airflow channel flows to the air jet to push open the sealing ball in the air jet, so that the air is sprayed into the inner shell to stir the waste solids of the waste parts and the cleaning fluid, after the air bag is extruded by the pushing plate, the pushing block is matched with the sliding block arranged on the surface of the shell to enable the pushing block to rotate so as to lose the pushing force on the pushing plate, then the push plate is reset through a built-in reset device, and the sealing ball returns to the original position to block the air nozzle again when the push plate is reset.
Further, the embodiment of the invention also discloses: this first stripper and second stripper realize opening or closed through flexible motor, and when opening, the flexible end of flexible motor is retrieved, and first dwang and second dwang that are connected with flexible end rotate downwards and incline first stripper and second stripper to both sides respectively and form the shape of falling V, and the useless solid side fall out from this first stripper and this second stripper slope of following of useless.
The invention has the beneficial effects that: firstly, the waste solids generated in the neodymium iron boron processing process are cleaned and screened before being recycled, so that a good processing effect is achieved, firstly, after the neodymium iron boron waste solids are poured into an inner shell through a layering device, a sealing rod is used for driving a closing disc to rotate to open the closing disc and a layering plate, so that the waste solids at the uppermost layer of the layering plate flow downwards along through holes of the layering plate, part of the waste solids stay on the surface when passing through a second layering plate, the other part of the waste solids flow downwards through a third layering plate, the waste solids reaching the third layering plate flow downwards and finally reach the surface of a partition plate, when all the layering plates have the waste solids, the closing disc and the layering plate are reclosed to re-separate and plan a large amount of the waste solids at first, the occupied amount of the waste solids in the same space is reduced, and the subsequent cleaning effect is improved, so that the waste solid and the waste piece can be fully mixed with the cleaning liquid to reduce the occurrence of the condition of not cleaning. And secondly, the waste parts and the waste solids in different layers are separately cleaned through the stirring device, so that the rotating shaft is not required to be cleaned simultaneously by large batches of waste parts and waste solids in the cleaning process, the cleaning resistance is reduced, and the damage condition of the rotating shaft is reduced. Thirdly, through the stirring device and the air injection device, when the rotating shaft rotates for stirring, the second rotating blade of the rotating shaft can be matched with the air injection device, the second rotating blade can pass through the groove of the casing every time the second rotating blade rotates, the pushing block at the arc end of the second rotating blade can be attached to the pushing plate through the groove of the casing when the second rotating blade passes through, after the pushing block is attached to the pushing plate, the pushing block applies a pushing force to the pushing plate, the pushing plate rotates along the arc track of the casing, the pushing plate extrudes the air storage bag when the second rotating blade rotates, the air in the air storage bag can be discharged and flows to the air jet through the air flow channel, the air in the air storage bag can firstly push the sealing gasket in the ventilation hole to block the ventilation hole and then the air in the air storage bag moves to the air jet to push the sealing ball in the air jet to realize air external injection, and the air through external injection forms bubbles in the inner casing, the waste solid-solid mixed liquid of different layers in the inner shell is rolled and stirred, so that the cleaning effect is improved.
Drawings
The present application is further described below with reference to the drawings and examples.
FIG. 1 is a front view of a pretreatment apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of the interior of a pretreatment apparatus according to an embodiment of the present invention.
FIG. 3 is a perspective view of an interior cross-section of a pretreatment device according to an embodiment of the present invention.
FIG. 4 is a schematic view of the layering device and the air injection device of the pretreatment device according to the embodiment of the invention.
FIG. 5 is a schematic structural diagram of an air injection device and a stirring device of the pretreatment device according to the embodiment of the present invention.
FIG. 6 is a schematic view of the inside of an air jet unit of a pretreatment apparatus according to an embodiment of the present invention.
Fig. 7 is a sectional view of the inside of the air jet unit of the pretreatment device according to the embodiment of the present invention.
FIG. 8 is a schematic diagram showing details of a stirring device and an air-jet device of the pretreatment apparatus according to the embodiment of the present invention.
FIG. 9 is a schematic view of the operation of the air injection device of the pretreatment device according to the embodiment of the present invention.
In the attached drawings
10. Body 101, vent 102, pan feeding mouth
103. Base 104, outlet valve 105, sealed motor
106. Outer shell 107, inner shell 108, sealing rod
109. Partition plate 20, discharging device 201 and telescopic motor
202. Support rod 203, first rotating rod 204 and first stripper plate
205. Second rotating rod 206, second stripper plate
30. Stirring device 301, drive motor 302, and rotating shaft
303. A first rotating blade 304, a second rotating blade 305 and a pushing block
40. Layered device 401, layered plate 402, and closed disk
50. Jet device 501, casing 502, scavenge port
503. Filter plate 504, push plate 505, air storage bag
506. Airflow channel 507, sealing ball 508 and air jet
509. Sealing gasket
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
as shown in fig. 1 and 2, the embodiment discloses a pretreatment device for waste solids of neodymium iron boron waste, which comprises: organism 10, discharging device 20, layered device 40, agitating unit 30, air jet system 50, organism 10 includes: the partition plate 109 is arranged inside the inner shell 107, and the periphery of the partition plate 109 is attached to the inner wall of the inner shell 107; discharging device 20, discharging device 20 set up in the below of organism 10, discharging device 20 and organism 10 fixed connection, and discharging device 20 includes: the first discharging plate 204 is arranged below the machine body 10, and the first discharging plate 204 is movably connected with the machine body 10; the second discharging plate 206 is arranged below the machine body 10, the second discharging plate 206 is movably connected with the machine body 10, and the second discharging plate 206 is arranged opposite to the first discharging plate 204; the first rotating rod 203 is arranged below the machine body 10, and one end of the first rotating rod 203 is connected with the surface of the first discharging plate 204; a second rotating lever 205 is disposed below the machine body 10, and one end of the second rotating lever 205 is connected to the surface of the second discharging plate 206; the stirring device 30 is arranged inside the machine body 10, and the stirring device 30 is fixedly connected with the machine body 10; the layering device 40 is arranged inside the machine body 10, and the layering device 40 is fixedly connected with the machine body 10; the air injection device 50 is arranged inside the machine body 10, the air injection device 50 is fixedly connected with the machine body 10, and the air injection device 50 comprises: a casing 501, wherein the casing 501 is disposed inside the machine body 10, and the casing 501 is used for injecting air into the machine body 10.
In the embodiment of the application, by the combined installation of the layering device 40, the stirring device 30 and the air injection device 50, before the waste and solid recovery treatment of the waste neodymium iron boron, the waste and solid are firstly cleaned to remove impurities in the waste, so that the recovery treatment process achieves a better effect, after the waste enters the inner shell 107, a large amount of waste and solid are firstly layered by the layering device 40, the situation that the cleaning effect is poor due to the fact that a large amount of waste and solid are accumulated in the inner shell 107 is prevented, the waste and solid are not easy to be cleaned completely is avoided, the waste and solid are firstly layered by the layering device 40 to divide the waste and solid into a plurality of areas, the occupied amount in the same space is reduced, the cleaning effect is improved, the problem that the rotating shaft 302 is damaged easily due to the fact that the rotating shaft 302 is stirred by the rotating shaft 302 in the stirring process can be reduced after the waste and solid is divided into the plurality of areas, meanwhile, the air injection device 50 is used, thereby make the inside bubble that produces of useless solid mixed liquid of useless piece, thereby the bubble is followed liquid and is inwards floated and contact the useless solid of useless piece and further improve the cleaning performance. The waste solid of the waste parts mentioned in the embodiment refers to the waste material generated by the neodymium iron boron.
Specifically, as shown in fig. 1, the body 10 includes: the device comprises an outer shell 106, an inner shell 107, a vent hole 101, a feeding port 102, a base 103, a water outlet valve 104, a sealing motor 105 and a sealing rod 108, wherein the inner part of the outer shell 106 is hollow; the inner shell 107 is arranged inside the outer shell 106, the outer shell 106 is attached to the inner shell 107, and the inner part of the inner shell 107 is hollow; the vent hole 101 is provided inside the outer casing 106, and the vent hole 101 penetrates through the surface of the outer casing 106 and the surface of the inner casing 107; the feeding port 102 is arranged above the shell 106, and the feeding port 102 is fixedly connected with the shell 106; the base 103 is arranged below the shell 106, the base 103 is fixedly connected with the lower surface of the shell 106, an accommodating space is arranged between the base 103 and the shell 106, and the discharging device 20 is arranged in the accommodating space; the outlet valve 104 is arranged inside the outer shell 106, and the outlet valve 104 penetrates through the outer shell 106 and enters the inside of the inner shell 107; the sealing motor 105 is disposed on the outer periphery of the housing 106; a sealing rod 108 is provided inside the inner casing 107, the sealing rod 108 rotates inside the inner casing 107, and the sealing rod 108 is connected to the sealing motor 105.
Specifically, the air injection device 50 is arranged above the partition plate 109, and a gap is arranged between the air injection device 50 and the partition plate 109; the middle of the partition plate 109 is provided with a through hole; the sealing motor 105 is connected with the sealing rod 108 through a belt, and the sealing motor 105 controls the sealing rod 108 to rotate.
Specifically, as shown in fig. 2, the discharging device 20 further includes: the support rod 202 and the telescopic motor 201, the support rod 202 is arranged below the machine body 10, one end of the support rod 202 is connected with the other end of the first rotating rod 203 and the other end of the second rotating rod 205, and the support rod 202, the first rotating rod 203 and the second rotating rod 205 form a Y shape; the flexible motor 201 sets up in one side of bracing piece 202, and the flexible end of flexible motor 201 is connected with the interlude of first dwang 203, and flexible motor 201 is provided with two, and the flexible end of another flexible motor 201 is connected with the interlude of second dwang 205.
Specifically, as shown in fig. 3, 4, and 5, the stirring device 30 includes: a driving motor 301, a rotating shaft 302, a first rotating blade 303, a second rotating blade 304 and a pushing block 305, wherein the driving motor 301 is arranged above the machine body 10; a rotating shaft 302 is arranged inside the machine body 10, the rotating shaft 302 penetrates through the upper surface of the machine body 10 to enter the interior of the machine body 10, one end of the rotating shaft 302 penetrating through the interior of the machine body 10 is inserted into the interior of the partition plate 109, and the rotating shaft 302 is controlled to rotate by a driving motor 301; the first rotating blade 303 is arranged on the periphery of the rotating shaft 302, and the first rotating blade 303 is fixedly connected with the rotating shaft 302; the second rotating blade 304 is arranged on the periphery of the rotating shaft 302, and the second rotating blade 304 is fixedly connected with the rotating shaft 302; the pushing block 305 is disposed outside the second rotating blade 304, and the pushing block 305 is fixedly connected to the second rotating blade 304.
Specifically, two groups of first rotating blades 303 are arranged, and a space is arranged between the two groups of first rotating blades 303; two sets of second rotating blades 304 are provided, two sets of second rotating blades 304 are provided between two sets of first rotating blades 303, and a space is provided between the first rotating blades 303 and the second rotating blades 304. The waste parts and the waste solids in different layers are separately cleaned through the stirring device 30, so that the rotating shaft 302 does not need to be cleaned simultaneously in a large batch in the cleaning process, the cleaning resistance is reduced, and the damage to the rotating shaft 302 is reduced.
Specifically, as shown in fig. 3 and 4, the layering device 40 includes: a layered plate 401 and a closed disk 402, wherein the layered plate 401 is arranged inside the machine body 10, the layered plate 401 is positioned above the partition plate 109, and the periphery of the layered plate 401 is attached and connected with the inner wall of the machine body 10; the closing disc 402 is arranged in the middle of the layered plate 401, the closing disc 402 is movably connected with the layered plate 401, and the closing disc 402 and the layered plate 401 are arranged in the same circle center. The periphery of closing disc 402 is provided with the pinion rack, and closing disc 402 is connected with the cooperation of sealing rod 108, and the periphery of sealing rod 108 is provided with the gear, and closing disc 402 meshes with sealing rod 108 mutually, and closing disc 402 rotates through sealing rod 108 and utilizes the circular ring to realize sealing with the circular through-hole laminating of layering board 401 and open and shut. After the waste neodymium iron boron solids are poured into the inner shell 107 through the layering device 40, the sealing rod 108 is used for driving the closing disc 402 to rotate so as to open the closing disc 402 and the layering plate 401, so that the waste solids at the uppermost layer of the layering plate 401 flow downwards along the through hole of the layering plate 401, part of the waste remains on the surface while passing through the second laminate 401, and another part flows down through the third laminate 401, the waste reaching the third laminate 401 flows down and finally reaches the surface of the partition plate 109, when all the laminated plates 401 have waste solids, the closing disc 402 and the laminated plate 401 are closed again to re-separate and plan a large amount of waste solids at first, so that the occupied amount of the waste solids in the same space is reduced, the subsequent cleaning effect is improved, the waste solids can be fully mixed with the cleaning liquid, and the condition that the waste solids are not cleaned is reduced. Because the mode that the neodymium iron boron waste solid is cleaned by directly leading the waste solid into the barrel and then stirring is adopted in the prior art, when the waste solid in the barrel is too much, the stirring shaft bears huge waste solid resistance, the waste solid can not be quickly stirred and cleaned, and the excessive waste solid is accumulated in the same space, the stirring shaft can not stir all the waste solids to the waste solid at the same position, the repeated stirring of the waste solid at the same position is not changed, so that the condition that part of the waste solid is not cleaned is reduced, the cleaning efficiency is possibly required to be cleaned again, the waste solid is layered through the layering device 40, the cleaning efficiency is improved, the resistance between the stirring shaft and the waste solid is reduced, and the stirring efficiency is improved.
Specifically, a circular through hole is formed in the surface of the layered plate 401, and a space is formed in the middle of the layered plate 401 for accommodating the closing disc 402; the closed disc 402 is composed of a circular ring, and the inner ring of the closed disc 402 is attached to a connecting circular ring arranged in the middle of the layered plate 401; three of the laminates 401 and the closing discs 402 are provided, each laminate 401 and each closing disc 402 forming a set of lamination means 40, and three sets of laminates 401 and closing discs 402 being provided with a distance between each other.
Specifically, as shown in fig. 4, 5, 6, 7, and 8, the air injection device 50 includes: the air conditioner comprises a machine shell 501, ventilation holes 502, a push plate 504, an air flow channel 506, an air storage bag 505, an air jet 508, a filter plate 503, a sealing ball 507 and a sealing gasket 509, wherein the machine shell 501 is arranged inside the machine body 10, the outer side surface of the machine shell 501 is attached and connected with the inner wall of the machine body 10, and an accommodating space is arranged inside the machine shell 501; the ventilation holes 502 are arranged on the outer side surface of the casing 501; the pushing plate 504 is arranged inside the casing 501, and the pushing plate 504 is movably connected with the casing 501; an air flow channel 506 is arranged inside the housing 501, and one end of the air flow channel 506 is connected with the ventilation hole 502; the air storage bag 505 is arranged in the shell 501, one end of the air storage bag 505 is connected with the air flow channel 506, and the other end of the air storage bag 505 is matched with the push plate 504; the air jet 508 is arranged in the shell 501, the air jet 508 is arranged at the flow section of the airflow channel 506, and the air jet 508 is communicated with the airflow channel 506; the filter plate 503 is arranged inside the air jet 508, the filter plate 503 is positioned at the air outlet end of the air jet 508, and the filter plate 503 is fixedly connected with the air jet 508; the sealing ball 507 is arranged inside the air vent 508, the sealing ball 507 is positioned at the left side of the filter plate 503, and the sealing ball 507 rolls inside the air vent 508; the gasket 509 is disposed inside the ventilation hole 502, and the gasket 509 is movably disposed inside the ventilation hole 502. Through the stirring device 30 and the air injection device 50, while the rotating shaft 302 rotates and stirs, the second rotating blade 304 of the rotating shaft 302 is matched with the air injection device 50, each time the second rotating blade 304 rotates and stirs, the second rotating blade 304 passes through the groove of the machine shell 501, the pushing block 305 at the arc end of the second rotating blade 304 is attached to the pushing plate 504 through the groove of the machine shell 501 when the second rotating blade 304 passes through, after the pushing block 305 is attached to the pushing plate 504, the pushing block 305 applies a pushing force to the pushing plate 504, the pushing plate 504 rotates along the arc track of the machine shell 501, the pushing plate 504 extrudes the air storage bag 505 when rotating, air inside the air storage bag 505 is exhausted to flow to the air injection port 508 through the air flow channel 506, when flowing to the air injection port 508, the air in the air storage bag 505 firstly pushes the sealing gasket 509 in the air flow channel 502 to block the air exchange hole 502, then the air in the air storage bag 505 moves to the air injection port 508 to seal and push the ball 507 in the, bubbles are formed in the inner shell 107 through the externally sprayed gas, so that the waste solid-liquid mixture of different layers in the inner shell 107 realizes rolling stirring, thereby improving the cleaning effect.
Specifically, a groove is formed in the middle of the casing 501, one end of the push plate 504 penetrates through the surface of the groove of the casing 501, and the other end of the push plate 504 is attached to the other end of the air storage bag 505; the pushing plate 504 is used for pressing the air storage bag 505 to push the internal air flow into the air flow channel 506; the air injection devices 50 are arranged in two groups, every four air injection devices 50 are arranged in one group, and a space is arranged between the air injection devices 50. The surface of sealing ball 507 is provided with the elastic strip, and the one end of elastic strip is connected with air current passageway 506, and the elastic strip is used for sealing ball 507 to realize restoring after being backed up by the air of saving gasbag 505.
The vent hole 101 is matched with the vent hole 502, and the air bag 505, the air flow channel 506, the vent hole 502 and the vent hole 101 form a complete channel. The formed complete channel is used for filling air in the air storage bag 505 after the sealing ball 507 seals the air jet 508, and the air in the air storage bag can be guided to the outside through the ventilation hole 502 and the ventilation hole 101, so that the air storage bag can be used repeatedly.
One end of the pushing plate 504 penetrating through the surface of the groove of the casing 501 is connected with the pushing block 305 in a matching way, the pushing block 305 is arranged to be a square block as the main body, two opposite sides of the square are provided with triangles, the triangular side of the pushing block 305 is attached to one end of the pushing plate 504, the surface of the pushing block 305 is provided with a rectangular strip which is transversely arranged, the rectangular strip of the pushing block 305 is matched with the arc-shaped groove of the pushing plate 504, and the pushing plate 504 drives the pushing block 305 to extrude the air storage bag 505 when rotating through the second rotating blade 304; the air jets 50 are staggered with respect to the layering device 40. The pushing block 305 is set to be a square block as the main body, triangles are arranged on the upper side and the lower side of the square block, the pushing block 305 is attached to the pushing plate 504 through the triangle edges to drive the pushing plate 504 to move, the air bag 505 can extrude the air inside into the air channel 506 in the moving process of the pushing plate 504 to realize the movement of air bubbles in the waste and solid mixed liquid, when the pushing block 305 moves the pushing plate 504, in order to prevent the pushing block 305 from being blocked by the pushing plate 504 when the pushing plate 504 moves to the boundary of the shell 501 to cause the rotating shaft 302 to be incapable of rotating and incapable of stirring the waste and solid in the inner shell 107, a sliding block is arranged on the surface of the shell 501 and is matched with the pushing block 305, the pushing block 305 is matched with the sliding block on the rotating path of the pushing block 305 to rotate the pushing block 305 by using the friction force generated by the sliding block and the pushing block 305, and the triangle of the pushing block 305 is separated from the pushing plate 504 when the pushing block, when the pushing block 305 rotates 90 degrees, the pressing force of the pushing block 305 on the pushing plate 504 disappears, so that the pushing plate 504 returns to the original position again through the built-in resetting device of the casing 501, the air bag 505 is filled with air again when the pushing plate 504 returns to the original position, the pushing block 305 is reset through the built-in clamp spring after the pushing block 305 rotates 90 degrees, and the pushing block is reused after the next rotation. The rotation of the second rotating blade 304 enables the pushing block 305 and the pushing plate 504 to be repeatedly matched, so that the air storage bag 505 is repeatedly sprayed and sucked, bubbles are repeatedly sprayed out of the inner shell 107, and the waste and solid cleaning effect of waste parts is improved.
Finally, the use method of the pretreatment device for the waste solids of the neodymium iron boron waste pieces comprises the following steps:
distributing materials, namely pouring neodymium iron boron waste solids into the machine body 10 through the material inlet 102, enabling the neodymium iron boron waste solids to fall into the inner shell 107 through the four material inlet 102, separating the neodymium iron boron waste solids through the first layering device 40, stopping part of the waste solids on the surface of the first layering device 40, and sequentially separating a large amount of waste solids through the second layering device 40 and the third layering device 40;
layering and mixing, namely adding cleaning liquid after layering of waste parts and waste solids, then driving a sealing rod 108 to rotate by a sealing motor 105, rotating a closing disc 402 under the rotation of the sealing rod 108, aligning each circular ring of the closing disc 402 with a circular through hole of a layering plate 401 to realize sealing and closing, and separating the waste parts and the waste solids of different sizes independently;
stirring and mixing, after the closed disc 402 and the layered plate 401 are fixed, the driving motor 301 drives the rotating shaft 302 to rotate, and the rotating shaft 302 stirs different waste solids separated by the layered plate 401 so that the cleaning solution and the waste solids can be fully mixed;
filtering and discharging, after stirring and mixing are completed, the sealing motor 105 drives the sealing rod 108 to rotate in the opposite direction to separate the closing disc 402 from the layered plate 401, the sealing shaft inside the rotating shaft 302 is lifted by the jacking motor above the machine body 10 to pull out the part inserted into the partition plate 109, the waste solids and the cleaning liquid in the inner shell 107 flow out through the through hole of the partition plate 109, the waste solids and the cleaning liquid fall above the first discharging plate 204 and the second discharging plate 206 after flowing out, the cleaning liquid is discharged through the water outlet valve 104 arranged on the outer shell 106, and then the cleaned waste solids are discharged through the first discharging plate 204 and the second discharging plate 206.
Further, the embodiment of the invention also discloses: the method also comprises the following steps after stirring and mixing: the air injection is mixed, the pushing block 305 outside the second rotating blade 304 contacts with the pushing plate 504 while the rotating shaft 302 rotates, the rotating force of the second rotating blade 304 can make the pushing block 305 press against the pushing plate 504 to move after the pushing block 305 contacts with the pushing plate 504, when the pushing plate 504 moves along the arc of the casing 501 of the air injection device 50, the air storage bag 505 is forced to convey air to the air flow channel 506, the flowing air can extrude the sealing gasket 509 in the ventilating hole 502, the sealing gasket 509 plugs the outlet of the ventilating hole 502, the residual air in the air flow channel 506 flows to the air injection opening 508, the sealing ball 507 in the air injection opening 508 is pushed open, so that the air is injected into the inner casing 107 to stir the waste and cleaning liquid, after the air storage bag 505 is extruded by the pushing plate 504, the pushing block 305 is matched with the sliding block arranged on the surface of the casing 501 to make the pushing block 305 rotate so as to lose the pushing force on the pushing plate 504, the push plate 504 is then reset by a built-in reset device, and the sealing ball 507 returns to the original position to block the air outlet 508 again when the push plate 504 is reset.
Further, the embodiment of the invention also discloses: first stripper 204 and second stripper 206 realize opening or being closed through flexible motor 201, and when opening, the flexible end of flexible motor 201 is retrieved, and first dwang 203 and the second dwang 205 that are connected with flexible end rotate downwards and incline first stripper 204 and second stripper 206 to both sides respectively and form the shape of falling V, and the useless thing is useless solid and falls out from the slope side of first stripper 204 and second stripper 206.
Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.

Claims (10)

1. The utility model provides a useless solid preprocessing device of neodymium iron boron waste, wherein, includes:
a body, the body comprising:
the partition plate is arranged inside the inner shell, and the periphery of the partition plate is attached and connected with the inner wall of the inner shell;
discharging device, discharging device sets up the below of organism, discharging device with organism fixed connection, discharging device includes:
the first discharging plate is arranged below the machine body and is movably connected with the machine body;
the second discharging plate is arranged below the machine body and movably connected with the machine body, and the second discharging plate is arranged opposite to the first discharging plate;
the first rotating rod is arranged below the machine body, and one end of the first rotating rod is connected with the surface of the first discharging plate;
the second rotating rod is arranged below the machine body, and one end of the second rotating rod is connected with the surface of the second discharging plate;
the stirring device is arranged inside the machine body and is fixedly connected with the machine body;
the layering device is arranged inside the machine body and is fixedly connected with the machine body;
the air jet system, the air jet system sets up the inside of organism, the air jet system with organism fixed connection, the air jet system includes:
the casing, the casing sets up the inside of organism, the casing is used for to the inside jet-propelled of organism.
2. The pretreatment device for the waste solids of the neodymium iron boron waste according to claim 1, wherein the machine body comprises:
a housing, the interior of which is hollow;
the inner shell is arranged inside the outer shell, the outer shell is attached to the inner shell, and the inside of the inner shell is hollow;
a vent disposed inside the outer shell, the vent passing through a surface of the outer shell and a surface of the inner shell;
the feeding port is arranged above the shell and fixedly connected with the shell;
the base is arranged below the shell and fixedly connected with the lower surface of the shell, an accommodating space is arranged between the base and the shell, and the discharging device is arranged in the accommodating space;
the water outlet valve is arranged inside the outer shell and penetrates through the outer shell to enter the inside of the inner shell;
a sealing motor disposed at an outer periphery of the housing;
the sealing rod is arranged in the inner shell, the sealing rod rotates in the inner shell, and the sealing rod is connected with the sealing motor.
3. The pretreatment device for the waste solids of the neodymium-iron-boron waste pieces according to claim 2, wherein the air injection device is arranged above the separation plate, and a space is arranged between the air injection device and the separation plate;
the middle of the partition plate is provided with a through hole;
the sealing motor is connected with the sealing rod through a belt, and the sealing motor controls the sealing rod to rotate.
4. The pretreatment device for the waste solids of the neodymium iron boron waste according to claim 1, wherein the discharging device further comprises:
the supporting rod is arranged below the machine body, one end of the supporting rod is connected with the other end of the first rotating rod and the other end of the second rotating rod, and the supporting rod, the first rotating rod and the second rotating rod form a Y shape;
flexible motor, flexible motor sets up one side of bracing piece, flexible motor flexible end with the interlude of first dwang is connected, flexible motor is provided with two, another flexible end of flexible motor with the interlude of second dwang is connected.
5. The pretreatment device for the waste solids of the neodymium iron boron waste according to claim 1, wherein the stirring device comprises:
the driving motor is arranged above the machine body;
the rotating shaft is arranged in the machine body, penetrates through the upper surface of the machine body and enters the machine body, one end, penetrating through the machine body, of the rotating shaft is inserted into the partition plate, and the rotating shaft is controlled to rotate through a driving motor;
the first rotating blade is arranged on the periphery of the rotating shaft and fixedly connected with the rotating shaft;
the second rotating blade is arranged on the periphery of the rotating shaft and is fixedly connected with the rotating shaft;
and the pushing block is arranged on the outer side of the second rotating blade and is fixedly connected with the second rotating blade.
6. The pretreatment device for the waste solids of the neodymium-iron-boron waste pieces according to claim 5, wherein two groups of the first rotating blades are arranged, and a space is arranged between the two groups of the first rotating blades;
the second rotating blades are arranged in two groups, the second rotating blades are arranged between the first rotating blades in two groups, and a space is arranged between the first rotating blades and the second rotating blades.
7. The pretreatment device for waste solids of neodymium-iron-boron waste pieces according to claim 1, wherein the layering device comprises:
the layered plate is arranged inside the machine body and positioned above the partition plate, and the periphery of the layered plate is attached and connected with the inner wall of the machine body;
the closing disc is arranged in the middle of the layered plate and movably connected with the layered plate, and the closing disc and the layered plate are arranged in the same circle center.
8. The pretreatment device for the waste solids of neodymium-iron-boron waste pieces according to claim 7, wherein a circular through hole is formed in the surface of the layered plate, and a space is formed in the middle of the layered plate and used for accommodating the closing disc;
the closed disc is composed of a circular ring, and the inner ring of the closed disc is attached to a connecting circular ring arranged in the middle of the layered plate;
the lamination board with the closing dish is provided with three, and each lamination board with each closing dish forms a set of the decker, the lamination board with the closing dish is provided with three groups and is provided with the interval each other.
9. The pretreatment device for waste solids of neodymium iron boron waste according to claim 1, wherein the air injection device comprises:
the shell is arranged inside the machine body, the outer side surface of the shell is attached and connected with the inner wall of the machine body, and an accommodating space is formed inside the shell;
a ventilation hole provided at an outer side surface of the case;
the pushing plate is arranged inside the shell and is movably connected with the shell;
an air flow passage provided inside the cabinet, one end of the air flow passage being connected to the airing hole;
the air storage bag is arranged inside the shell, one end of the air storage bag is connected with the airflow channel, and the other end of the air storage bag is matched with the pushing plate;
the air jet is arranged in the shell and arranged at the flow section of the airflow channel, and the air jet is communicated with the airflow channel;
the filter plate is arranged inside the air jet port, the filter plate is positioned at the air outlet end of the air jet port, and the filter plate is fixedly connected with the air jet port;
the sealing ball is arranged inside the air jet, is positioned on the left side of the filter plate and rolls inside the air jet;
the sealing gasket is arranged inside the ventilation hole and movably arranged inside the ventilation hole.
10. The pretreatment device for the waste solids of the neodymium-iron-boron waste pieces according to claim 9, wherein a groove is formed in the middle of the casing, one end of the push plate penetrates through the surface of the groove of the casing, and the other end of the push plate is attached to the other end of the air storage bag;
the pushing plate is used for extruding the air storage bag to push the internal airflow into the airflow channel;
the air injection device is provided with two groups, every four air injection devices form one group, and a space is arranged between the air injection devices.
CN202010569531.8A 2020-06-20 2020-06-20 Pretreatment device for waste solids of neodymium iron boron waste parts and use method Active CN111687124B (en)

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