CN117654895B - Powder classifier - Google Patents
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- CN117654895B CN117654895B CN202410140378.5A CN202410140378A CN117654895B CN 117654895 B CN117654895 B CN 117654895B CN 202410140378 A CN202410140378 A CN 202410140378A CN 117654895 B CN117654895 B CN 117654895B
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- 239000000843 powder Substances 0.000 title claims abstract description 158
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 238000007599 discharging Methods 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims description 47
- 238000001914 filtration Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010902 jet-milling Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to the field of mechanical structures of powder classifying equipment for powder, in particular to a powder classifier, which comprises a powder classifying host, wherein the powder classifying host comprises a host shell, a combined rotor, an air protecting structure, a separating structure and a driving transmission mechanism, and the host shell is provided with a negative pressure fine powder discharging port, an upper feeding port and a lower discharging port; the main machine shell is internally provided with a cavity, the combined rotor can realize rotation to separate powder from fine powder and is communicated with a negative pressure fine powder discharging port to discharge filtered fine powder, the air protection structure is configured to form a structure arrangement for blocking an air wall, the separation structure is configured to enable the powder to be moved and discharged downwards from the upper feeding port after entering the main machine shell, and the powder can enable the fine powder in the main machine shell to be sucked out by the negative pressure fine powder discharging port and pass through the combined rotor to enter the structure arrangement for discharging the negative pressure fine powder discharging port. The structure can realize fine powder classification and has higher reliability.
Description
Technical Field
The invention relates to the field of mechanical structures of grinding and grading equipment for powder.
Background
The jet milling technology is a technology for milling and classifying materials by means of high-speed air flow, and is widely applied to superfine milling in the fields of nonmetallic minerals, metallurgy, medicines, foods and the like, compared with the traditional preparation, the jet milling system has the advantages of clean production environment, low consumption, energy conservation, relatively uniform particle size distribution, relatively high yield and the like, and the powder classifier is mainly used for classifying milled powder into different particle sizes according to requirements, discharging and collecting the powder. However, due to structural and technological reasons, the existing pulverizing and classifying system is difficult to meet the requirements under the condition that the superfine pulverizing technology is required in certain industries, for example, the requirements on the particle size, the distribution and other performances of laser carbon powder are higher and higher, the current jet milling technology and system equipment cannot meet the high requirements, and the existing powder jet milling equipment systems are not intelligent enough, so that the real-time monitoring and automatic adjustment of the pulverizing process are difficult to realize. Therefore, research on a novel powder crushing and classifying system technology has important theoretical and practical application values.
Disclosure of Invention
The invention aims to provide a powder classifier which can realize fine powder classification and has higher reliability.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the powder classifier comprises a powder classifying host machine, wherein the powder classifying host machine comprises a host machine shell, a combined rotor, an air protection structure and a separation structure which are arranged in the host machine shell, and a driving transmission mechanism which is arranged on the host machine shell and is connected with the combined rotor for transmission, and the host machine shell is provided with a negative pressure fine powder discharging port, an upper feeding port and a lower discharging port; the main machine shell is internally provided with a cavity for installation and powder grading treatment, the combined rotor can realize rotation blocking of powder filtering out fine powder and discharge of the filtered fine powder which is communicated to a negative pressure fine powder discharge port, the air protection structure is configured to form an air wall blocking structure and is used for preventing the powder in the cavity from being discharged without being filtered by the combined rotor, the separation structure is configured in such a way that powder can be moved to the lower discharge port to be discharged after entering from the upper feed port, and the powder can enable fine powder contained in the powder to be sucked out by the suction force of the negative pressure fine powder discharge port in the moving process, and pass through the combined rotor to enter the negative pressure fine powder discharge port to be discharged.
The cavity in the main machine shell is divided into a grading cavity and a negative pressure cavity, the negative pressure fine powder discharging port is correspondingly communicated with the negative pressure cavity, and the upper feeding port is correspondingly communicated with the grading cavity; the combined rotor comprises a discharging butt joint core corresponding to the negative pressure cavity and a separating rotor corresponding to the discharging butt joint core in the grading cavity and fixedly connected to the discharging butt joint core, a filtering grid hole leading to an internal cavity of the separating rotor and a discharging butt joint port are formed in the separating rotor, a discharging through hole communicated with the negative pressure cavity and the discharging butt joint port is formed in the discharging butt joint core, a cavity rotating gap is formed between the negative pressure cavity between the inner wall of the host shell and the combined rotor and the grading cavity, and/or a rotor rotating shaft gap is formed between a rotating shaft for connecting and transmitting the combined rotor and the host shell by a driving transmission mechanism, and the air protection structure corresponds to the cavity rotating gap and/or the rotor rotating shaft gap to form a structural arrangement of air wall blocking.
The structure that the gas protection structure forms a gas wall barrier corresponding to the chamber rotation gap is arranged to comprise a gas protection butt joint ring which is fixedly arranged on the inner wall of a host shell and sleeved outside the combined rotor, the chamber rotation gap is formed between the gas protection butt joint ring and the outer side wall of the combined rotor, a gas protection air inlet pipe orifice is arranged on the host shell corresponding to the gas protection butt joint ring, and a butt joint vent hole groove which is correspondingly communicated with the gas protection air inlet pipe orifice and the chamber rotation gap is formed in the gas protection butt joint ring;
And/or, the structure that the gas protection structure forms the gas wall corresponding to the rotor rotating shaft gap and blocks is arranged to be including the installation setting up on the host computer casing and supply the pivot mounting disc that drive transmission mechanism's pivot installation set up, correspond the pivot mounting disc medial surface setting and set up the pivot through-hole and supply drive transmission mechanism's pivot to wear to establish including pivoted inner cover plate, form between inner cover plate and pivot mounting disc and the pivot gas chamber of intercommunication pivot through-hole and connect the air inlet joint that sets up on the pivot mounting disc and communicate to the pivot gas chamber, form between pivot through-hole and drive transmission mechanism's the rotor rotating shaft gap.
The separating rotor structure is a columnar ring, the axial direction of the separating rotor structure is vertical, the lower end face of the separating rotor structure is sealed through a connecting end cover, the upper end face of the separating rotor structure is provided with a butt joint ring to form the discharging butt joint opening, the filtering grid holes are distributed on the circumferential side wall of the columnar ring and are long strip-shaped holes axially formed along the separating rotor, and the cavity rotating gap corresponds to the periphery of the joint of the gas protection butt joint ring and the discharging butt joint core.
The utility model provides a separation structure, including the annular air inlet passageway around separating rotor in the hierarchical cavity circumference, set up between annular air inlet passageway and separating rotor with the spaced grid plate division wall of annular air inlet passageway and be the spiral stock guide that extends around separating rotor heliciform near separating rotor lateral wall, the air intake has been seted up to corresponding annular air inlet passageway on the host computer casing, the last feed inlet corresponds the spiral stock guide top setting between grid plate division wall and the separating rotor in the intercommunication hierarchical cavity, the last grid hole that has set up of grid plate division wall and be constructed to make annular air inlet passageway form the structure setting that blocks the powder and pass the grid hole, the lower discharge gate corresponds the below setting of the spiral stock guide between grid plate division wall and the separating rotor in the intercommunication hierarchical cavity.
The air inlets are arranged in a tangential direction corresponding to the communicated annular air inlet channel; and/or the grid plate division wall is formed by a plurality of arc grid plates which are spaced and are spirally staggered, spaced and overlapped around the circumference of the separation rotor in sequence, and the spacing gaps between two adjacent arc grid plates form the grid holes.
The powder classifying host machines are sequentially connected in multiple groups, and the lower discharge ports of the powder classifying host machines of the previous group are communicated with the upper feed ports of the later group.
The powder classifying host is arranged in two groups of structures which are correspondingly butted up and down, the lower discharge port of the powder classifying host in the former group is a falling open port corresponding to the lower end face of the host shell, the upper feed port of the powder classifying host in the latter group is a receiving open port corresponding to the upper end face of the host shell, the falling open port is butted with the receiving open port, and the structural positions of the chambers, the combined rotor and the gas protection structure of the two groups of powder classifying host are symmetrically arranged.
The main machine shells of the two groups of powder grading main machines are connected through a hinge structure, and the end parts of hinge shafts of the hinge structure are connected with an automatic overturning driving device.
By adopting the technical scheme, the invention has the beneficial effects that: when the powder classifier is used for classifying, powder is input into the cavity from the inlet, the powder can be moved to the lower discharge port to be discharged after entering from the upper feed port, and fine powder contained in the powder in the moving process can be sucked out by the suction force of the negative pressure fine powder discharging port, passes through the combined rotor and enters the negative pressure fine powder discharging port to be discharged, so that the classification, discharge and collection of the powder are realized, and the aim of the invention is achieved.
In the above-mentioned further structure, the rotation rate of combination rotor is adjusted through the rotational speed of control drive mechanism according to the granule size that grinds needs classification, can change the size that can filter the powder granule that gets into the negative pressure and arrange the powder mouth through the combination rotor, the faster powder granule that filters the discharge of rotation rate is littleer, the rotation of combination rotor can play the effect that blocks the granule that surpasses the filtration settlement size, can also play the collision and smash to these powder granule, can form the gas wall at above-mentioned working process gas protection architecture, can prevent effectively that the powder in the cavity from not passing through the filtration discharge of combination rotor, and the formation of gas wall can not influence the high-speed rotation of combination rotor, can reduce the loss that high-speed rotation caused again.
In addition, the structural arrangement of the powder classifier has the advantages of being beneficial to clean production environment, good in equipment sealing performance, fine in particle grinding, high in finished product quality, low in consumption, energy-saving and the like, and the mechanical equipment is compact in integral structure, simple and convenient to operate, has higher operation and treatment reliability and production benefit economy, and is more beneficial to meeting the crushing and grinding requirements of different industries.
Drawings
Fig. 1 is a schematic view of a powder classifier according to the present invention.
Fig. 2 is a schematic cross-sectional view of a powder classifier according to the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic cross-sectional view of a separation structure in a powder classifier according to the present invention.
Fig. 5 is a schematic view of the structure of a combined rotor in a powder classifier according to the present invention.
In the figure:
A combined rotor 7; a discharge butt joint core 71; a discharge through hole 711;
separating rotor 72; an internal cavity 721; filter grid holes 722;
A discharge interface 723; an attachment end cap 724; a docking collar 725;
a drive transmission 73; a rotation shaft 731; a gas protection structure 8; a gas-shielded docking collar 81;
an air shield intake nozzle 82; a butt-joint vent groove 83; a spindle mounting plate 84;
a rotation shaft through hole 85; an inner cover 86; a spindle gas chamber 87; an air intake joint 88;
A separation structure 9; an annular air inlet channel 91; grid plate dividing wall 92;
grid holes 921; an arcuate grid plate 922; a spiral guide plate 93;
A main body case 10; a negative pressure fine powder discharge port 101; an upper feed port 102; a lower discharge port 103;
a classification chamber 104; a negative pressure chamber 105; a chamber rotation slit 106; rotor shaft gap 107; an air inlet 108; a hinge structure 109; the driving device 100 is automatically turned over.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
The embodiment discloses a powder classifier, including powder classifying host machine, the powder classifying host machine that fig. 1 and 2 show is the multiunit that connects gradually, is two sets of structure settings of corresponding butt joint from top to bottom in the figure, can select to adopt the application of a set of and multiunit setting according to the use needs in the in-service use, and the setting of multiunit can prolong the hierarchical processing procedure of powder, is favorable to promoting hierarchical fineness and promotion powder hierarchical handling capacity and hierarchical processing production benefit etc.. The specific structure and positional connection are described in detail below with reference to the drawings.
The powder classifying main machine is shown in fig. 1,2,3 and 4, and comprises a main machine shell 10, a combined rotor 7, an air protecting structure 8 and a separating structure 9 which are arranged in the main machine shell 10, and a driving transmission mechanism 73 which is arranged on the main machine shell 10 and connected with the combined rotor 7.
The main machine shell 10 is provided with a negative pressure fine powder discharge port 101, an upper feed port 102 and a lower discharge port 103; the main body 10 is internally provided with a chamber for installation and powder classification treatment, and as shown in fig. 1,2 and 3, the chamber is divided into a classification chamber 104 and a negative pressure chamber 105, wherein the negative pressure chamber 105 is arranged above the classification chamber 104, the negative pressure fine powder discharge port 101 is correspondingly communicated with the negative pressure chamber 105, and the upper feed port 102 is correspondingly communicated with the classification chamber 104.
The combined rotor 7 can realize rotation blocking of crushed powder, filtering of fine powder and exhausting of the filtered fine powder, which is communicated with the negative pressure fine powder exhausting port 101, the structure of the combined rotor is shown in fig. 3 and 5, the combined rotor comprises an exhausting butt joint core 71 corresponding to the negative pressure cavity 105 and a separating rotor 72 corresponding to the internal connection of the grading cavity 104 on the exhausting butt joint core 71, the separating rotor 72 is provided with a filtering grid hole 722 leading to an internal cavity 721 of the separating rotor and an exhausting butt joint port 723, the exhausting butt joint core 71 is provided with an exhausting through hole 711 communicated with the negative pressure cavity 105 and the exhausting butt joint port 723, the lower end face butt joint port 723 is circumferentially and uniformly distributed and communicated with the negative pressure cavity 105, a cavity rotation gap 106 is formed between the negative pressure cavity 105 and the grading cavity 104 between the inner wall of the host housing 10 and the combined rotor 7, and a rotor rotating shaft gap 107 is formed between a rotating shaft 731 of the driving transmission combined rotor 7 and the host housing 10.
In this embodiment, the driving transmission mechanism 73 includes a driving motor, a transmission knot and a rotating shaft assembly as shown in fig. 1, where the driving motor is fixedly installed on the main machine casing 10, as shown in the drawing, the driving motor is installed outside the main machine casing 10, the main machine casing 10 is provided with a rotating shaft mounting hole, the rotating shaft assembly includes a rotating shaft 731 and a shaft sleeve seat, one end of the shaft sleeve seat is fixedly installed and connected to the rotating shaft mounting hole, the rotating shaft is inserted into the shaft sleeve seat, one end of the rotating shaft is inserted into the main machine casing 10 to be fixedly connected with the combined rotor 7 so as to drive the combined rotor to rotate, and the other end of the rotating shaft is connected with an output shaft of the driving motor through the transmission structure so as to drive the combined rotor to rotate, which is a common driving transmission technical structure, and detailed illustration reference numerals are not made here.
In this embodiment, as shown in fig. 3 and 4, the separating rotor 72 is in a cylindrical ring, the axial direction of the separating rotor is vertical, the lower end face of the separating rotor is closed by a connecting end cover 724, the upper end face of the separating rotor is provided with a docking ring 725 to form the discharging docking port 723, the filtering grid holes 722 are arranged on the circumferential side wall of the cylindrical ring and are elongated holes axially formed along the separating rotor 72, and the cavity rotating gap 106 is correspondingly arranged at the periphery of the junction of the docking ring 725 and the discharging docking core 71.
The air protection structure 8 is configured to form an air wall blocking structure, and can prevent powder in the chamber from being discharged through the filtration of the combined rotor 7, in this embodiment, the air wall blocking structure is formed by the corresponding chamber rotation gap 106 and the rotor rotation shaft gap 107, as shown in fig. 2 and 3.
The structure that the air protection structure 8 forms the air wall to block corresponding to the cavity rotation gap is arranged to comprise an air protection butt joint ring 81 fixedly arranged on the inner wall of the main machine shell 10 and sleeved outside the combined rotor 7, a cavity rotation gap 106 is formed between the air protection butt joint ring 81 and the outer side wall of the combined rotor 7, an air protection air inlet pipe orifice 82 is arranged on the main machine shell 10 corresponding to the air protection butt joint ring 81, and a butt joint vent hole groove 83 corresponding to the air protection air inlet pipe orifice 82 and the cavity rotation gap 106 is formed in the air protection butt joint ring 81. So the gas of gas protection structure 8 gets into the butt joint air vent groove 83 of gas protection docking collar 81 from gas protection inlet pipe mouth 82, then blows out from butt joint air vent groove 83 to cavity rotation gap 106, and cavity rotation gap 106 can form a gas wall promptly and can block that the powder from this gap from getting into, and above-mentioned structure setting and gas protection effect can not cause the influence and can effectively avoid the powder to get into negative pressure cavity 105 from cavity rotation gap 106 to form protection architecture to the rotation of combination rotor 7.
The air protection structure 8 is arranged to form an air wall blocking structure corresponding to the rotor rotating shaft gap 107 and comprises a rotating shaft mounting plate 84, an inner cover plate 86, a rotating shaft air cavity 87 and an air inlet joint 88, wherein the rotating shaft mounting plate 84 is arranged on the host shell 10 and is used for mounting and arranging a rotating shaft 731 of the driving transmission mechanism 73, the rotating shaft 731 is arranged corresponding to the inner side surface of the rotating shaft mounting plate 84 and is provided with a rotating shaft through hole 85 for the driving transmission mechanism 73, the rotating shaft air cavity 87 is formed between the inner cover plate 86 and the rotating shaft mounting plate 84 and is communicated with the rotating shaft through hole 85, the air inlet joint 88 is connected with the rotating shaft mounting plate 84 and is communicated with the rotating shaft air cavity 87, and the rotor rotating shaft gap 107 is formed between the rotating shaft through hole 85 and the rotating shaft 731 of the driving transmission mechanism 73. Through the above structure, the gas of the gas protection structure 8 is introduced from the gas inlet connector 88 (shown in fig. 1), and the gas wall forming the gap is blown out from the rotor shaft gap 107 into the shaft gas chamber 87, so that the powder cannot enter from the gap, and the rotation influence and outward flying of the powder caused by the powder entering into the shaft assembly can be avoided, thereby forming the protection structure.
The separation structure 9 is configured in a structure arrangement that powder can be moved to the lower discharge port 103 to be discharged after entering from the upper feed port 102, and the powder can enable fine powder contained in the powder to be sucked by the suction force of the negative pressure fine powder discharge port 101 in the moving process, and the fine powder enters the negative pressure fine powder discharge port 101 through the combined rotor 7 to be discharged. In this embodiment, as shown in fig. 2 and fig. 3, the separation structure 9 includes an annular air inlet channel 91 circumferentially surrounding the separation rotor 72 in the classification chamber 104, a grid plate dividing wall 92 disposed between the annular air inlet channel 91 and the separation rotor 72 and separating the annular air inlet channel 91, and a spiral guide plate 93 adjacent to an outer side wall of the separation rotor 72 and extending spirally around the separation rotor 72, an air inlet 108 is formed on the main housing 10 corresponding to the annular air inlet channel 91, the upper feed inlet 102 is disposed above the spiral guide plate 93 correspondingly communicating between the grid plate dividing wall 92 in the classification chamber 104 and the separation rotor 72, and the grid plate dividing wall 92 is disposed with grid holes 921 and configured to enable the annular air inlet channel 91 to form a structure that blocks powder from passing through the grid holes 921, and the lower feed outlet 103 is disposed correspondingly communicating below the spiral guide plate 93 between the grid plate dividing wall 92 in the classification chamber 104 and the separation rotor 72.
The air inlets 108 are arranged in a tangential direction corresponding to the annular air inlet channels 91, the grid plate separation walls 92 are formed by a plurality of arc grid plates 922 at intervals and spirally staggered and overlapped around the circumference of the separation rotor at intervals, the interval gaps between two adjacent arc grid plates 922 form the grid holes 921, and the outer side edges of the arc grid plates 922 can form bending edges which are bent outwards and are beneficial to air flow entering. The separation structure 9 arranged by the structure is beneficial to the air flow guiding of the annular air inlet channel 91 to be annular and wrap outside the grid plate partition wall 92, so that air flow protection is formed, and meanwhile, air flow can be led in to realize that powder of the spiral guide plate 93 is separated out of fine powder through the air flow and enters the separation rotor 72 under the filtration of the separation rotor 72.
When the powder classifying host machine with the structure is used, air enters the annular air inlet channel 91 from the air inlet 108, air flows along with the structure, meanwhile, powder enters the spiral guide plate 93 from the upper feed inlet 102 and falls downwards, because of the blocking of the grid plate separating wall 92, the air flow direction of the annular air inlet channel 91 and the negative pressure air flow of the negative pressure cavity 105, the powder of the spiral guide plate 93 cannot be discharged from a gap between two adjacent arc grid plates 922, the separating rotor 72 is driven by the driving motor to rotate at a high speed, according to the rotating speed setting, qualified powder particles cannot enter the separating rotor 72 from the grid holes 921, but continue to fall downwards along the spiral guide plate 93, and finally are discharged from the lower discharge outlet 103 into the finished product barrel, and very small fine powder which does not belong to the qualified particle size can enter the separating rotor 722 through the grid holes 921, then reach the cavity 105 through the discharge butt joint 71, and then are discharged from the negative pressure fine powder discharge port 101, so that classification treatment is formed, and in the classification treatment, the air protecting structure 8 is arranged at the gap between the rotor core and the rotor core, and the gap 106 can be prevented from being influenced by the rotating shaft, so that the powder can be prevented from forming the gap 107 from being influenced by the rotating. The working principle of the powder classifier at the lower part of the drawing in the embodiment is the same as that described above, and the description thereof will not be repeated here.
In the embodiment, the powder classifying hosts are arranged in a structure of two groups of vertically corresponding butt joint, the lower discharge port 103 of the powder classifying host of the former group is a falling open port corresponding to the lower end face of the host shell 10, the upper feed port 102 of the powder classifying host of the latter group is a receiving open port corresponding to the upper end face of the host shell 10, the falling open port is butt joint with the receiving open port, the cavity, the combined rotor and the gas protection structure of the two groups of powder classifying hosts are symmetrically arranged in structural positions, as shown in fig. 2, the two groups of powder classifying hosts can be butt jointed and freely blanking, the latter group can continue the same classifying treatment, the host shells 10 of the two groups of powder classifying hosts are connected through a hinge structure 109 for facilitating production, and the end part of a hinge shaft of the hinge structure 109 is connected with the automatic overturning driving device 100.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (10)
1. A powder classifier, characterized in that: the powder classifying machine comprises a main machine shell, a combined rotor, an air protecting structure and a separating structure which are arranged in the main machine shell, and a driving transmission mechanism which is arranged on the main machine shell and is connected with the combined rotor in a transmission way, wherein the main machine shell is provided with a negative pressure fine powder discharging port, an upper feeding port and a lower discharging port; the combined rotor can realize rotation to separate powder from filtering out fine powder and is communicated with a negative pressure fine powder discharging port to discharge the filtered fine powder, the air protection structure is configured to form a structure which can form air wall blocking and is used for preventing the powder in the cavity from being discharged through the filtering of the combined rotor, the separation structure is configured to be a structure which can move and discharge the powder from an upper feed inlet to a lower discharge outlet after entering from the upper feed inlet and can enable the fine powder contained in the powder to be sucked out by the suction force of the negative pressure fine powder discharging port to enter the negative pressure fine powder discharging port to be discharged in the moving process;
The utility model provides a main frame casing, including main frame casing, combination rotor, separation structure, lower feed inlet, main frame casing, wherein the cavity in the main frame casing is divided into classifying chamber and negative pressure chamber, the combination rotor is including corresponding the row material butt joint core in the negative pressure chamber and correspond the separation rotor of fixed connection on row material butt joint core in classifying chamber, the separation structure is including the annular air inlet channel around separating the rotor all around in the classifying chamber, set up between annular air inlet channel and separation rotor with annular air inlet channel spaced apart grid plate division wall and be the spiral stock guide that extends around separation rotor spiral near the separation rotor lateral wall, the air intake has been seted up to corresponding annular air inlet channel on the main frame casing, go up the feed inlet and correspond the spiral stock guide top setting between grid plate division wall and the separation rotor in the intercommunication classifying chamber, the lower feed outlet corresponds the below setting of the spiral stock guide between grid plate division wall and the separation rotor in the intercommunication classifying chamber.
2. A powder classifier as defined in claim 1, wherein: the negative pressure fine powder discharging port is correspondingly communicated with the negative pressure chamber, and the upper feeding port is correspondingly communicated with the grading chamber; the separation rotor is provided with a filtering grid hole leading to an internal cavity of the separation rotor and a discharge butt joint port, the discharge butt joint core is provided with a discharge through hole communicated with the negative pressure chamber and the discharge butt joint port, a chamber rotating gap is formed between the negative pressure chamber between the inner wall of the host shell and the combined rotor and the grading chamber and/or a rotor rotating shaft gap is formed between a rotating shaft of the driving transmission mechanism for connecting the driving combined rotor and the host shell, and the air protection structure corresponds to the chamber rotating gap and/or the rotor rotating shaft gap to form an air wall blocking structure.
3. A powder classifier as defined in claim 2, wherein: the structure that the gas protection structure forms a gas wall barrier corresponding to the chamber rotation gap is arranged to comprise a gas protection butt joint ring which is fixedly arranged on the inner wall of a host shell and sleeved outside the combined rotor, the chamber rotation gap is formed between the gas protection butt joint ring and the outer side wall of the combined rotor, a gas protection air inlet pipe orifice is arranged on the host shell corresponding to the gas protection butt joint ring, and a butt joint vent hole groove which is correspondingly communicated with the gas protection air inlet pipe orifice and the chamber rotation gap is formed in the gas protection butt joint ring;
And/or, the structure that the gas protection structure forms the gas wall corresponding to the rotor rotating shaft gap and blocks is arranged to be including the installation setting up on the host computer casing and supply the pivot mounting disc that drive transmission mechanism's pivot installation set up, correspond the pivot mounting disc medial surface setting and set up the pivot through-hole and supply drive transmission mechanism's pivot to wear to establish including pivoted inner cover plate, form between inner cover plate and pivot mounting disc and the pivot gas chamber of intercommunication pivot through-hole and connect the air inlet joint that sets up on the pivot mounting disc and communicate to the pivot gas chamber, form between pivot through-hole and drive transmission mechanism's the rotor rotating shaft gap.
4. A powder classifier as defined in claim 3, wherein: the separating rotor structure is a columnar ring, the axial direction of the separating rotor structure is vertical, the lower end face of the separating rotor structure is sealed through a connecting end cover, the upper end face of the separating rotor structure is provided with a butt joint ring to form the discharging butt joint opening, the filtering grid holes are distributed on the circumferential side wall of the columnar ring and are long strip-shaped holes axially formed along the separating rotor, and the cavity rotating gap corresponds to the periphery of the joint of the gas protection butt joint ring and the discharging butt joint core.
5. A powder classifier as defined in claim 2,3 or 4 wherein: and grid holes are distributed on the grid plate partition wall and are configured to enable the annular air inlet channel to form a structural arrangement for blocking powder from passing through the grid holes.
6. A powder classifier as defined in claim 5, wherein: the air inlets are arranged in a tangential direction corresponding to the communicated annular air inlet channel; and/or the grid plate division wall is formed by a plurality of arc grid plates which are spaced and are spirally staggered, spaced and overlapped around the circumference of the separation rotor in sequence, and the spacing gaps between two adjacent arc grid plates form the grid holes.
7. A powder classifier as defined in claim 1,2,3 or 4 wherein: the powder classifying host machines are sequentially connected in multiple groups, and the lower discharge ports of the powder classifying host machines of the previous group are communicated with the upper feed ports of the later group.
8. A powder classifier as defined in claim 7, wherein: the powder classifying hosts are arranged in two groups of structures which are correspondingly butted up and down, the lower discharge port of the powder classifying host in the former group is a falling open port corresponding to the lower end face of the host shell, the upper feed port of the powder classifying host in the latter group is a receiving open port corresponding to the upper end face of the host shell, the falling open port is butted with the receiving open port, and the structural positions of the chambers, the combined rotor and the gas protection structure of the two groups of powder classifying hosts are symmetrically arranged; the main machine shells of the two groups of powder grading main machines are connected through a hinge structure, and the end parts of hinge shafts of the hinge structure are connected with an automatic overturning driving device.
9. A powder classifier as defined in claim 5, wherein: the powder classifying hosts are sequentially connected in multiple groups, and the lower discharge ports of the powder classifying hosts in the previous group are communicated with the upper feed ports of the next group; the powder classifying hosts are arranged in two groups of structures which are correspondingly butted up and down, the lower discharge port of the powder classifying host in the former group is a falling open port corresponding to the lower end face of the host shell, the upper feed port of the powder classifying host in the latter group is a receiving open port corresponding to the upper end face of the host shell, the falling open port is butted with the receiving open port, and the structural positions of the chambers, the combined rotor and the gas protection structure of the two groups of powder classifying hosts are symmetrically arranged; the main machine shells of the two groups of powder grading main machines are connected through a hinge structure, and the end parts of hinge shafts of the hinge structure are connected with an automatic overturning driving device.
10. A powder classifier as defined in claim 6, wherein: the powder classifying hosts are sequentially connected in multiple groups, and the lower discharge ports of the powder classifying hosts in the previous group are communicated with the upper feed ports of the next group; the powder classifying hosts are arranged in two groups of structures which are correspondingly butted up and down, the lower discharge port of the powder classifying host in the former group is a falling open port corresponding to the lower end face of the host shell, the upper feed port of the powder classifying host in the latter group is a receiving open port corresponding to the upper end face of the host shell, the falling open port is butted with the receiving open port, and the structural positions of the chambers, the combined rotor and the gas protection structure of the two groups of powder classifying hosts are symmetrically arranged; the main machine shells of the two groups of powder grading main machines are connected through a hinge structure, and the end parts of hinge shafts of the hinge structure are connected with an automatic overturning driving device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140378.5A CN117654895B (en) | 2024-02-01 | 2024-02-01 | Powder classifier |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926290A (en) * | 1962-01-02 | 1963-05-15 | Microcyclomat Co | Vertical classifier |
| KR20100054023A (en) * | 2008-11-13 | 2010-05-24 | 임동빈 | Ventilator of one-body type ventilation grill |
| CN205253571U (en) * | 2015-09-23 | 2016-05-25 | 中国石油化工股份有限公司 | Powder grading plant |
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2024
- 2024-02-01 CN CN202410140378.5A patent/CN117654895B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926290A (en) * | 1962-01-02 | 1963-05-15 | Microcyclomat Co | Vertical classifier |
| KR20100054023A (en) * | 2008-11-13 | 2010-05-24 | 임동빈 | Ventilator of one-body type ventilation grill |
| CN205253571U (en) * | 2015-09-23 | 2016-05-25 | 中国石油化工股份有限公司 | Powder grading plant |
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