CN115193716A - Grading apparatus - Google Patents

Abstract

The invention discloses a classification device, which is characterized by comprising: the shell is provided with an air inlet and a first air outlet; the scattering mechanism comprises a scattering disk which is arranged in the shell and can actively rotate; the feeding piece is arranged on the shell and used for feeding materials to the scattering disc; the grading mechanism comprises a grading rotor which is arranged in the shell and can rotate actively; the receiving structure is at least partially arranged in the shell and is used for receiving the classified granular materials; the separator is communicated with the first air outlet and is used for separating the particles flowing out of the shell; wherein, the grading mechanism is located breaks up the mechanism top and is provided with a plurality ofly along the direction of air intake to first air outlet, receives material structure quantity and has a plurality ofly, and is used for receiving the granule material between different particle sizes respectively. The grading equipment enriches the dimension of particle grading, can divide particle materials into at least four particle size intervals, and has high particle grading precision and high grading efficiency.

Description

Grading apparatus

Technical Field

The invention relates to the technical field of particle classification, in particular to a classification device.

Background

The particle grading technology is used as an important component of the powder technology, and the quality and the production efficiency of industrial products are greatly improved. Particle classification is an operation of dividing a particle group into a plurality of particle size classes according to the particle size of the particles. In the prior art, a plurality of grading devices are generally connected in series, materials are graded for the first time in one grading device and then conveyed to another grading device for the second time, and by analogy, the multistage grading is realized. By adopting the structure, the grading equipment occupies a large area, has high requirements on installation space and has low grading efficiency.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

The invention aims to provide a grading device, which can carry out multi-stage grading in one device and has higher grading efficiency.

The purpose of the invention is realized by the following technical scheme: a grading apparatus comprising: the shell is provided with an air inlet and a first air outlet; the scattering mechanism comprises a scattering disk which is arranged in the shell and can rotate actively; the feeding piece is arranged on the shell and used for feeding materials to the scattering disc; the grading mechanism comprises a grading rotor which is arranged in the shell and can rotate actively; the receiving structure is at least partially arranged in the shell and is used for receiving the classified granular materials; the separator is communicated with the first air outlet and is used for separating the particles flowing out of the shell; the grading mechanism is located above the scattering mechanism and a plurality of receiving structures are arranged in the direction from the air inlet to the first air outlet, and the receiving structures are multiple and used for receiving particle materials with different particle size intervals respectively.

Further, the housing includes: the air inlet barrel is positioned on the air inlet barrel; the first air outlet is positioned on the air outlet cylinder; the grading cylinder is communicated between the air inlet cylinder and the air outlet cylinder; wherein, go out the chimney, hierarchical section of thick bamboo and an air inlet section of thick bamboo top-down sets up, break up the mechanism with hierarchical mechanism all is located in hierarchical section of thick bamboo.

Furthermore, the air inlet cylinder comprises an air inlet cavity communicated with the air inlet, a first air guide cone is arranged in the air inlet cavity, and the outer diameter of the first air guide cone is gradually reduced in the direction from the air inlet to the first air outlet.

Further, the scattering disc, the feeding piece and the grading mechanism are sequentially arranged along the direction from the air inlet to the first air outlet.

Further, the scattering mechanism comprises a first driving assembly, the first driving assembly comprises a first driving shaft which is rotatably connected to the shell and a first driving piece which is in transmission connection with the first driving shaft, and the scattering disc is fixed on the first driving shaft.

Further, the grading mechanism includes: the primary grading mechanism comprises a primary grading rotor and a second driving component for driving the primary grading rotor to rotate; the second-stage grading mechanism is positioned above the first-stage grading mechanism and comprises a second-stage grading rotor and a third driving component for driving the second-stage grading rotor to rotate; and the peripheries of the primary grading rotor and the secondary grading rotor are respectively provided with an air guide structure.

Further, receive the material structure and include: the first hopper is used for receiving the granular materials in the air inlet cylinder; the second hopper is used for receiving the granular materials classified by the primary classifying rotor; and a third hopper located in the second hopper for receiving the particulate material classified by the secondary classification rotor.

Further, the first hopper, the second hopper and the third hopper are provided with discharge ports communicated with the outside.

Further, the first hopper comprises a first discharge hole communicated with the outside, the second hopper is communicated with the first hopper, and the granular materials in the second hopper can flow to the first hopper and flow out from the first discharge hole.

Further, the third hopper includes the third discharge gate, the third hopper include certainly the third discharge gate extends to discharging pipe outside the casing, be equipped with the shake material structure of shaking the granule material in the discharging pipe.

Further, the material shaking structure comprises: the material shaking part is arranged in the discharge pipe and divides the discharge pipe into a discharge cavity and a blowing cavity; the blowing piece is connected with the blowing cavity; the discharging cavity is communicated with the discharging end of the third hopper, and the blowing piece can blow air to the blowing cavity and shake the material shaking piece.

Further, the one-stage staged rotor includes: a first inner race; the first outer ring is arranged around the first inner ring and provided with a plurality of first grading ports; and a first flow chamber located between the first inner ring and the first outer ring and communicating with the first staging port; wherein the first inner ring guides particulate material flowing from the secondary classifying rotor to the third hopper.

Furthermore, a second air guiding cone is arranged in the first flow cavity, and the outer diameter of the second air guiding cone is gradually reduced in the direction from the air inlet to the first air outlet.

Further, the two-stage staged rotor includes: a second inner race; the second outer ring is arranged around the second inner ring and provided with a plurality of second grading ports; and a second flow chamber located between the second inner ring and the second outer ring and communicating with the second staging port; wherein, in the direction from the air inlet to the first air outlet, the size of the second flow cavity is gradually increased.

Furthermore, the separator is a cyclone, and comprises a fourth discharge hole at the bottom and a second air outlet at the top, a circulating pipeline is connected between the second air outlet and the air inlet, and a fan is arranged on the circulating pipeline.

Compared with the prior art, the invention has the following beneficial effects: the shell of the grading equipment is provided with an air inlet and a first air outlet so as to provide a power airflow source required by grading to the interior of the shell; in the process that the air flow flows in the shell, the particle materials are dispersed in the shell under the action of the scattering mechanism, ultra-coarse particles fall into the bottom of the shell by overcoming the thrust of the air flow so as to be classified for the first time, the air flow carries the residual particle materials to be classified step by step through the classifying rotors of the classifying mechanisms, then the air flow carries fine particle materials which are difficult to be classified by the classifying mechanisms to enter the separator from the first air outlet so as to be separated again, so that the clean air flow and the fine particle materials are divided out of the separator, and in the process, particles in different particle size intervals are respectively contained in different material receiving structures; therefore, by adopting the structure, the particle materials can be divided into at least four particle size intervals in one device, the particle grading dimensionality is enriched, the particle grading precision is high, and the occupied space is reduced; in addition, the scattering mechanism can uniformly disperse the particles in the shell, thereby improving the classification efficiency of the classification mechanism.

Drawings

FIG. 1 is a schematic perspective view of the classification apparatus of the present invention.

FIG. 2 is a schematic cross-sectional view of the classifying apparatus of the present invention.

FIG. 3 is a schematic view of the grading apparatus of the present invention with the housing removed.

Fig. 4 is a schematic view of the structure of the feeding member of the present invention.

FIG. 5 is a schematic view of the breaking assembly of the present invention.

FIG. 6 is a schematic view of the structure of the classifying mechanism of the present invention.

FIG. 7 is a schematic view showing the structure of a one-stage rotor according to the present invention.

FIG. 8 is a schematic view showing the structure of a two-stage rotor according to the present invention.

FIG. 9 is a schematic view of the structure of a third hopper of the present invention.

In the figure:

100. a housing; 11. an air inlet cylinder; 111. an air inlet cavity; 112. an air inlet; 113. a first air guide cone; 114. mounting the cylinder; 115. a blanking port; 12. an air outlet cylinder; 121. an air outlet cavity; 122. a first air outlet; 13. a grading cylinder; 131. a grading chamber; 1311. a first cavity section; 1312. a second cavity section; 1313. a first communication port; 1314. a second communication port; 200. a feeding member; 21. a material guiding section; 22. a discharging section; 300. a breaking mechanism; 31. a breaking-up disc; 311. a tray body; 312. scattering leaves; 313. a first material passing port; 32. a first drive assembly; 321. a first drive shaft; 400. a first-stage grading mechanism; 41. a first stage classification rotor; 411. a first inner race; 412. a first outer race; 4121. grating sheets; 4122. a first classification port; 413. a first receiving member; 414. a first flow chamber; 415. a first mounting bracket; 416. a second air guide cone; 417. a second material passing port; 418. a material guide ring; 42. a second drive assembly; 421. a second drive shaft; 422. a first bearing housing; 500. a secondary grading mechanism; 51. a secondary classification rotor; 511. a second inner race; 512. a second outer race; 5121. a second classification port; 513. a second receiving member; 514. a second flow chamber; 515. a second mounting bracket; 52. a third drive assembly; 521. a third drive shaft; 522. a second bearing housing; 523. connecting sleeves; 600. a wind guide structure; 61. wind guiding blades; 71. a first hopper; 711. a first feed port; 712. a first discharge port; 72. a second hopper; 721. a second feed port; 722. a second discharge port; 723. a switching part; 73. a third hopper; 731. a third feed inlet; 732. a third discharge port; 733. a discharge pipe; 734. a discharge cavity; 735. a blowing cavity; 74. shaking the material part; 75. a support plate; 751. material shaking holes; 800. a separator; 81. a second air outlet; 82. and a fourth discharge hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are 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 and not restrictive on the broad application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, a grading apparatus according to a preferred embodiment of the present invention includes: a housing 100 having an intake opening 112 and a first outlet opening 122; a breaking mechanism 300 including a breaking disk 31 disposed in the housing 100 and actively rotatable; a feeding member 200 provided on the housing 100 and feeding the scattering mechanism 300; a classifying mechanism including a classifying rotor disposed in the casing 100 and actively rotatable; a receiving structure at least partially disposed in the housing 100 and configured to receive the classified particulate material; and a separator 800 communicating with the first outlet 122 and separating particles flowing out of the housing 100; the grading mechanism is located above the scattering mechanism 300 and is provided with a plurality of grading mechanisms along the direction from the air inlet 112 to the first air outlet 122, and the receiving structures are multiple in number and are respectively used for receiving particle materials with different particle size intervals.

The shell 100 of the grading equipment of the invention is provided with an air inlet 112 and a first air outlet 122 so as to provide a power airflow source required by grading to the interior of the shell 100; in the process of flowing of the air flow in the shell 100, the particle materials are dispersed in the shell 100 under the action of the scattering mechanism 300, ultra-coarse particles fall into the bottom of the shell 100 by overcoming the thrust of the air flow to be classified for the first time, the air flow carries the particle materials to be classified step by step through the classifying rotors of the classifying mechanisms, then the air flow carries fine particle materials which are difficult to be classified by the classifying mechanisms to enter the separator 800 from the first air outlet 122 to be separated again, so that the clean air flow and the fine particle materials are separated out of the separator 800, and in the process, particles in different particle size intervals are respectively contained in different material receiving structures; therefore, by adopting the structure, the particle materials can be divided into at least four particle size intervals in one device, the particle grading dimensionality is enriched, and the particle grading precision is high; in addition, by providing the scattering mechanism 300, when the feeding member 200 inputs the particles to be separated into the casing 100, the scattering mechanism 300 can better disperse the particles in the casing 100, thereby improving the classification efficiency of the classification mechanism.

Further, the casing 100 includes an inlet drum 11, an outlet drum 12, and a classifying drum 13 communicating between the inlet drum 11 and the outlet drum 12. The air inlet barrel 11 comprises an air inlet cavity 111, and an air inlet 112 is formed in the air inlet barrel 11 and is communicated with the air inlet cavity 111. The air inlet 112 is used for connecting a fan (not shown) to supply air to the air inlet chamber 111. The air outlet cylinder 12 includes an air outlet cavity 121, and the first air outlet 122 is disposed on the air outlet cylinder 12 and is communicated with the air outlet cavity 121. The classifying cylinder 13 includes a classifying chamber 131 penetrating in the axial direction thereof, and the scattering mechanism 300 and the classifying mechanism are accommodated in the classifying chamber 131. The air inlet drum 11 is positioned below the air outlet drum 12, and the air inlet cavity 111 and the air outlet cavity 121 are respectively butted with two opening sides of the grading cavity 131 to seal the grading cavity 131. In this embodiment, the number of the air inlets 112 and the number of the first air outlets 122 are both plural and are distributed along the circumferential direction of the casing 100, so as to improve the air inlet and outlet efficiency of the casing 100.

Preferably, a first air guiding cone 113 is disposed in the air inlet cavity 111, and an outer diameter of the first air guiding cone 113 is gradually reduced along a direction from the air inlet 112 to the first air outlet 122, which will be referred to as an airflow flowing direction hereinafter. After the air flow enters the air inlet cavity 111 from the air inlet 112, the air flow can rotate around the first air guiding cone 113 to flow to the classifying cavity 131 under the guidance of the first air guiding cone 113.

Further, referring to fig. 4, the feeding member 200 is a hollow pipe structure, which is located between the scattering disk 31 and the classifying mechanism. The feeding member 200 is fixed in the grading cylinder 13, the feeding end of the feeding member 200 extends to the outside from the side wall of the grading cylinder 13, and the discharging end of the feeding member 200 extends to above the scattering mechanism 300. The feeding part 200 comprises a material guiding section 21 and a material discharging section 22 communicated with the material guiding section 21, wherein the feeding end is positioned on the material guiding section 21, and the material discharging end is positioned on the material discharging section 22. The material guiding section 21 is arranged from the feeding end to the other end in a downward inclined mode, after the granular materials are guided into the feeding piece 200, the materials can flow out from the discharging end under the action of gravity, and the material conveying efficiency of the granular materials is improved. The discharging section 22 is bent relative to the material guiding section 21, and the axial direction of the discharging section 22 is consistent with the rotation axis direction of the scattering disk 31, so that the discharging end faces the scattering disk 31, and the scattering disk 31 can better receive the granular materials flowing out from the discharging end. In this embodiment, the feeding members 200 are preferably plural in number and distributed along the circumferential direction of the casing 100.

Further, referring to fig. 1 and 5, the scattering disk 31 is located between the first air guide cone 113 and the feeding member 200, and the rotation axis of the scattering disk 31 is aligned with the flow direction of the air flow. The scattering disk 31 includes a disk body 311 and scattering blades 312 disposed on the circumferential side of the disk body 311, and the scattering blades 312 are plural in number and are uniformly distributed at intervals in the circumferential direction of the disk body 311. The scattering mechanism 300 further comprises a first driving assembly 32 in transmission connection with the scattering disk 31, and the first driving assembly 32 can drive the scattering disk 31 to rotate so as to scatter the particulate materials falling onto the scattering disk 31.

The first driving assembly 32 includes a first driving shaft 321 rotatably disposed in the housing 100 and a first driving member (not shown) connected to one end of the first driving shaft 321, and the disc 311 is fixedly sleeved on the first driving shaft 321. The first driving member is specifically a motor, which can drive the first driving shaft 321 to rotate and drive the scattering disk 31 to rotate synchronously. In the present embodiment, the scattering disks 31 are plural in number and are spaced apart from each other in the axial direction of the first drive shaft 321. Preferably, in order to facilitate installation of the first driving member, the first driving shaft 321 extends from the bottom of the housing 100 to the outside, and the first driving member may be disposed at the bottom of the housing 100.

In an embodiment, the disc body 311 of the scattering disc 31 located at the bottommost portion of the first driving shaft 321 is connected to the mounting tube 114, the mounting tube 114 is sleeved outside the first driving shaft 321 and extends to the air inlet cavity 111, and the first wind guiding cone 113 is connected to an end of the mounting tube 114, which is not connected to the scattering disc 31, so as to mount the first wind guiding cone 113. A gap is formed between the outer peripheral side of the first air guiding cone 113 and the inner peripheral side of the air inlet cavity 111 to form a blanking port 115. Because the ultra-coarse particles are difficult to overcome the gravity, the particle materials are scattered uniformly around after being scattered by the scattering disk 31, and the part of the coarse particles can collide with the inner wall of the shell 100 and then slide down to fall into the air inlet cavity 111 and flow out from the material outlet 115, so that the part of the ultra-coarse particles are prevented from being accumulated in the air inlet cavity 111, and the collection of the ultra-coarse particles is realized.

Further, in the present embodiment, the classifying mechanism includes a first-stage classifying mechanism 400 and a second-stage classifying mechanism 500, wherein the first-stage classifying mechanism 400 is used for screening coarse-grained materials, and the second-stage classifying mechanism 500 is used for screening medium-grained materials. Indeed, in other embodiments, the number of graders may be increased or decreased as desired, and the invention is not limited thereto.

Referring to fig. 3, 6 and 7, the one-stage staging mechanism 400 includes one-stage staging rotor 41 and a second drive assembly 42 drivingly connected to the one-stage staging rotor 41. First stage classifier rotor 41 is accommodated in classifying chamber 131 and located above dispersing disk 31, and second driving unit 42 drives first stage classifier rotor 41 to rotate.

First-stage classifier rotor 41 includes a first inner ring 411, a first outer ring 412 provided around first inner ring 411, and a first receiving member 413 receiving first inner ring 411 and first outer ring 412, and a first flow chamber 414 for flowing a gas flow is formed between first inner ring 411 and first outer ring 412. The inner wall of the first inner race 411 is provided with a first mounting bracket 415, the first mounting bracket 415 being adapted to interface with the second drive assembly 42. The first outer ring 412 includes a plurality of grating pieces 4121, the grating pieces 4121 are equally spaced along the circumference of the first inner ring 411, a first classifying port 4122 is formed between two adjacent grating pieces 4121, and the first classifying port 4122 is communicated with the first flow cavity 414.

Preferably, a second air guiding cone 416 is arranged in the first flow cavity 414, and the outer diameter of the second air guiding cone 416 is gradually reduced in the flowing direction of the air flow, so that the air flow entering the first flow cavity 414 can flow to the secondary classification mechanism 500 around the second air guiding cone 416 in a rotating manner, thereby improving the efficiency and accuracy of particle classification.

The second driving assembly 42 includes a second driving shaft 421 and a second driving member (not shown) connected to one end of the second driving shaft 421, the second driving shaft 421 is rotatably disposed in the casing 100, and the first mounting bracket 415 is fixedly disposed on the second driving shaft 421. The second driving member is specifically a motor, which can drive the second driving shaft 421 to rotate and drive the first-stage classification rotor 41 to rotate synchronously. Preferably, in order to facilitate the installation of the second driving member, the second driving shaft 421 extends from the top of the housing 100 to the outside in the flowing direction of the air current, and the second driving member is installed at the top of the housing 100.

Referring to fig. 3, 6 and 8, the two-stage grading mechanism 500 includes a two-stage grading rotor 51 and a third driving assembly 52 in transmission connection with the two-stage grading rotor 51, wherein the third driving assembly 52 can drive the two-stage grading rotor 51 to rotate.

Two-stage classification rotor 51 is located above one-stage classification rotor 41. The two-stage staged rotor 51 includes a second inner race 511, a second outer race 512 surrounding the second inner race 511, and a second receiving member 513 receiving the second inner race 511 and the second outer race 512. A second flow chamber 514 for the flow of the air current is formed between the second inner race 511 and the second outer race 512. The inner wall of the second inner ring 511 is provided with a second mounting block 515, and the second mounting block 515 is used for connecting with the third driving assembly 52. The second outer ring 512 has a structure similar to that of the first outer ring 412, and also includes a plurality of grating pieces 4121, the grating pieces 4121 are equally spaced along the circumference of the second inner ring 511 to form a second stage port 5121, and the second stage port 5121 is communicated with the second flow chamber 514.

Preferably, the second inner ring 511 and the second outer ring 512 are both cone structures, in the flowing direction of the airflow, the outer diameter of the second inner ring 511 is gradually reduced, and the outer diameter of the second outer ring 512 is gradually increased, so that the second flowing cavity 514 is in an inverted cone structure with a small bottom and a large top, and the airflow can rotatably flow to the air outlet cylinder 12 in the second flowing cavity 514, thereby improving the efficiency and accuracy of particle classification. Indeed, in other embodiments, two-stage staging rotor 51 may also take a similar configuration as one-stage staging rotor 41.

The third driving assembly 52 includes a third driving shaft 521 and a third driving member (not shown) connected to an end of the third driving shaft 521, the third driving shaft 521 is rotatably disposed in the casing 100, and the second mounting frame 515 is fixedly disposed on the third driving shaft 521. The third driving member is specifically a motor, and can drive the third driving shaft 521 to rotate and drive the secondary classifying rotor 51 to rotate synchronously. In order to facilitate installation of the third driving member, an end of the third driving shaft 521 not connected to the second mounting frame 515 may also extend from the top end of the casing 100 to the outside along the arrangement direction of the grading mechanism, and the third driving member is installed at the top of the casing 100.

Preferably, in order to improve the classification efficiency, first-stage classification rotor 41 and second-stage classification rotor 51 are coaxially disposed and abut against each other. Preferably, in the present embodiment, the classifying chamber 131 includes a first chamber 1311 and a second chamber 1312, the first chamber 1311 and the second chamber 1312 are communicated with each other through a first communication port 1313, and the second chamber 1312 and the outlet barrel 12 are communicated with each other through a second communication port 1314. Primary classifying rotor 41 is disposed in first cavity 1311 and blocked at first communication port 1313, and secondary classifying rotor 51 is disposed in second cavity 1312 and blocked at second communication port 1314, thereby ensuring that the air flow enters into chimney 12 after passing through primary classifying rotor 41 and secondary classifying rotor 51 in this order.

Because first-stage grading rotor 41 and second-stage grading rotor 51 set up coaxially, in order to avoid second drive shaft 421 and third drive shaft 521 spacing each other, third drive shaft 521 is hollow structure, and the cover is established outside second drive shaft 421, and the internal diameter of third drive shaft 521 is greater than the external diameter of second drive shaft 421 to avoid influencing the independent rotation of the two.

Referring to fig. 6, a first bearing seat 422 adapted to the second driving shaft 421 and a second bearing seat 522 adapted to the third driving shaft 521 are fixedly disposed on the housing 100 to implement the mounting of the second driving shaft 421 and the third driving shaft 521.

The first bearing seats 422 are two in number and are respectively located at positions near the top end and the bottom end of the second driving shaft 421 to ensure smooth and reliable rotation of the second driving shaft 421. Since the top end of the second driving shaft 421 extends to the outside of the casing 100, a first bearing seat 422 can be directly fixed on the top of the casing 100. In order to avoid that the first bearing seat 422 near the bottom end of the second driving shaft 421 limits the rotation of the first-stage staging rotor 41, the first bearing seat 422 is fixed in the casing 100 and located below the first-stage staging rotor 41, and the bottom end of the second driving shaft 421 extends downward to form the first-stage staging rotor 41 to be connected with the first bearing seat 422.

The second bearing housings 522 are also two in number and are respectively located at positions of the third driving shaft 521 near the top end and the bottom end to ensure smooth and reliable rotation of the third driving shaft 521. A second bearing housing 522 is directly fixed to the top of the housing 100. Because there is no installation space between the two-stage classification rotor 51 and the one-stage classification rotor 41, and the third driving shaft 521 extends downward and is blocked by the first mounting rack 415 and the first bearing block 422, it is difficult to extend to the lower side of the one-stage classification rotor 41, and in order to ensure that the second bearing block 522 can be smoothly installed at the position of the third driving shaft 521 near the bottom end, in this embodiment, a connecting sleeve 523 is installed on the second bearing block 522 located at the position of the third driving shaft 521 near the top end, the connecting sleeve 523 is sleeved outside the third driving shaft 521 and extends to the top of the second inner ring 511, and another second bearing block 522 can be installed on the connecting sleeve 523 to realize the fixed connection between the connecting sleeve and the casing 100 and to be sleeved at the position of the third driving shaft 521 near the bottom end.

Preferably, as shown in fig. 1 and 3, the air guide structure 600 is disposed on the outer periphery of each of the first-stage classification rotor 41 and the second-stage classification rotor 51, the air guide structure 600 includes a plurality of air guide blades 61 arranged at equal intervals, and the air guide blades 61 can change the flow trajectory of the air flow, so as to promote the air flow to rotate according to a preset angle, improve the stability of the flow field, reduce the probability of particle collision, and improve the classification accuracy.

Further, as shown in fig. 1 and 2, the receiving structure includes a first hopper 71, a second hopper 72, and a third hopper 73. The first hopper 71 is for receiving ultra-coarse material falling into the air inlet drum 11, the second hopper 72 is for receiving coarse material separated from the primary classifying rotor 41, and the third hopper 73 is for receiving medium coarse material separated from the secondary classifying rotor 51.

The bottom of the air inlet cavity 111 is of an opening structure, the first hopper 71 is connected to the bottom of the air inlet cavity 111, the first hopper 71 is provided with a first inlet 711, and the first inlet 711 is communicated with the blanking port 115. The bottom of the first hopper 71 is provided with a first discharge port 712, the first discharge port 712 is preferably arranged downward, and the ultra-coarse material in the first hopper 71 can be transported to the outside from the first discharge port 712.

The second hopper 72 is arranged in the grading chamber 131, the second hopper 72 is positioned below the first-stage grading rotor 41, the second hopper 72 comprises a second feeding hole 721 and a second discharging hole 722, the inner diameter of the second feeding hole 721 is preferably larger than the outer diameter of the first-stage grading rotor 41, so that the second feeding hole can be arranged around the periphery of the first-stage grading rotor 41, and the reliability of material collection is improved.

In one embodiment, the second hopper 72 may partially extend from the second discharge port 722 to the outside through the classifying chamber 131, the extending portion may end as a discharge end, and the particulate material flowing out of the second discharge port 722 may flow out of the extending portion along the extending portion so as to be collected by the outside from the particulate material in the second hopper 72.

Indeed, in other embodiments, when the grading accuracy requirement is relatively low, the second hopper 72 may be in communication with the first hopper 71 such that the particulate material in the second hopper 72 is collected into the first hopper 71 and flows out of the first outlet 712 along with the particulate material in the first hopper 71.

Specifically, one end of the mounting cylinder 114 is communicated with the second discharge port 722, the other end of the mounting cylinder 114 is communicated with the first feed port 711, and the inner diameter of the mounting cylinder 114 is larger than the outer diameter of the first driving shaft 321, so that a channel for the circulation of the particulate material is formed between the mounting cylinder 114 and the first driving shaft 321, and the coarse particulate material flowing into the first hopper 71 can flow into the first hopper 71 through the first discharge port 712, the mounting cylinder 114 and the second feed port 721 in sequence. By adopting the above mode, avoided setting up the ejection of compact structure that extends to outside the equipment on second hopper 72, simplified structure, and make things convenient for the concentrated collection of this part particle diameter within range granule material, improve production efficiency.

Since the mounting cylinder 114 is mounted on the scattering disk 31, the space between the mounting cylinder 114 and the second hopper 72 is blocked by the scattering disk 31, and in order to ensure smooth circulation of the particulate material, as shown in fig. 5, at least one first material passing opening 313 is provided on the disk body 311 of the scattering disk 31, the second hopper 72 includes an adapter 723 extending from the second material outlet 722 to the disk body 311, the adapter 723 is a tubular structure, and the first material passing opening 313 is respectively communicated with the adapter 723 and the mounting cylinder 114. Preferably, the inner shell of the adaptor 723 is provided with a valve (not shown) for controlling the on-off of the controller, so as to control the on-off of the first hopper 71 and the second hopper 72.

The third hopper 73 is positioned in the grading chamber 131, and in order to avoid restricting the installation of the third hopper 73, the size of the third hopper 73 is smaller than that of the second hopper 72, the third hopper 73 is positioned in the second hopper 72, and a gap for the flow of the particulate material is provided between the third hopper 73 and the second hopper 72. The third hopper 73 is positioned below the secondary classifying rotor 51, and the third hopper 73 includes a third feed port 731 and a third discharge port 732 communicating with the outside.

Since the third hopper 73 and the second-stage classifying rotor 51 are blocked by the first-stage classifying rotor 41, in order to ensure that the coarse and medium-grained materials classified by the second-stage classifying rotor 51 can smoothly enter the third hopper 73, as shown in fig. 7, at least one second material passing hole 417 is formed between the first inner ring 411 and the first mounting rack 415, and the blanking is guided between the third hopper 73 and the second-stage classifying rotor 51 through the first inner ring 411. The inner diameter of the first inner ring 411 is preferably larger than the outer diameter of the secondary classifying rotor 51 and not larger than the inner diameter of the third feed port 731 of the third hopper 73, so that the first inner ring 411 can cover the peripheral side of the secondary classifying rotor 51, and the third hopper 73 can cover the peripheral side of the first inner ring 411, thereby improving the reliability of receiving materials and avoiding coarse particle materials from flowing into the second hopper 72. The coarse medium-sized material classified by the secondary classifying rotor 51 may fall into the first inner ring 411 and enter the third hopper 73 through the second material passing opening 417. Preferably, a guide ring 418 is provided at a side of the first inner ring 411 adjacent to the secondary classifying rotor 51, and the guide ring 418 is disposed to be inclined downward to guide the medium coarse material to be gathered toward the first inner ring 411.

In addition, referring to fig. 9, the third hopper 73 includes a discharge pipe 733 extending from the third discharge port 732, the discharge pipe 733 extends from the classification chamber 131 to the outside in a downward slope, an end of the discharge pipe 733 located at the outside is a discharge end, and the medium-coarse material in the third hopper 73 can be transported to the outside along the discharge pipe 733.

Preferably, since the particle size of the medium coarse particle material is small, there is a problem of retaining the discharge pipe 733, and in order to avoid this, a material shaking structure for carrying the medium coarse particle material is provided in the discharge pipe 733, and the material shaking structure is configured to actively shake, so as to improve the fluidity of the medium coarse particle material.

Specifically, the material shaking structure comprises a material shaking member 74 fixed in the material outlet pipe 733 for carrying medium coarse material and a blowing member (not shown) for blowing the material shaking member 74 to shake. The material shaking member 74 extends from one end to the other end thereof in the conveying direction of the discharge pipe 733. The material shaking piece 74 divides the material discharge pipe 733 into a material discharge chamber 734 and a blowing chamber 735 which are independent of each other. The discharging cavity 734 is used for accommodating coarse-grained materials, the blowing cavity 735 is communicated with a blowing member, which may be a blower, and the blowing member blows air towards the blowing cavity 735 to shake the material shaking member 74. The material shaking member 74 may be made of a flexible material such as cloth or film.

Because tremble material piece 74 and be flexible material, with discharging pipe 733 between the installation inconvenient, and the medium coarse grain material bears and easily takes place deformation after trembling on material piece 74 to cause and tremble the material effect poor. In order to avoid the above situation, the material shaking structure further includes a supporting plate 75 supported at the bottom of the material shaking member 74, the supporting plate 75 is a hollow structure, and the material shaking member 74 is laid on the supporting plate 75. A plurality of material shaking holes 751 for allowing air flow to pass through are arrayed on the support plate 75. The gas flow through the shaking holes 751 shakes the shaking member 74 to smoothly flow the medium and coarse material in the discharging pipe 733.

All or part of the area of the material shaking piece 74 is fastened with the support plate 75 by welding, gluing, clamping and the like. As a preferred embodiment, the edge of the material shaking member 74 is fastened to the edge of the supporting plate 75, and other areas are not fastened to the supporting plate 75, so as to increase the material shaking amplitude of the material shaking member 74.

Further, referring to fig. 1, the separator 800 may specifically adopt a cyclone, and the present invention is not described herein again. The top of the separator 800 is provided with a second air outlet 81 for the air to flow out, and the bottom is provided with a fourth discharge hole 82 for the fine particle material to flow out. The second air outlet 81 is connected with a circulation pipeline (not shown), and the circulation pipeline is connected with a fan at the air inlet 112 to realize the circulation flow of the air flow, avoid the waste caused by the flow of particles which are not screened in the air flow to the outside, and simultaneously improve the environmental protection in the production process. Preferably, in the present embodiment, the number of the separators 800 is multiple, and the separators are in one-to-one correspondence with the first air outlets 122, so as to improve the classification efficiency.

The working process of the invention is as follows: the particle materials are fed onto the scattering disk 31 through the feeding piece 200, and the scattering disk 31 rotates and uniformly scatters the particle materials to the periphery of the grading cavity 131; the air flow entering from the air inlet 112 carries the particle material to rotate and move to the first-stage grading rotor 41, in the process, the ultra-coarse particles directly fall to the bottom of the air inlet cavity 111 under the action of gravity and flow into the first hopper 71 from the material falling port 115 to be discharged out of the equipment from the first hopper 71; the primary classifying rotor 41 can separate coarse particle materials in the high-speed airflow, and the classified coarse particle materials fall into a second hopper 72 positioned below the primary classifying rotor 41 to be discharged outside the equipment or to a first hopper 71 as required; the high-speed airflow continues to rotate upwards after passing through the primary grading rotor 41, when the high-speed airflow meets the secondary grading rotor 51, the secondary grading rotor 51 can grade the medium coarse particle materials in the airflow, and the graded medium coarse particle materials fall into the third hopper 73 along the first inner ring 411 and are discharged out of the equipment from the third hopper 73; the high-speed airflow enters the air outlet cylinder 12 through the secondary classification rotor 51, and enters the separator 800 from the first air outlet 122 for cyclone separation, the clean airflow flows out from the second air outlet 81, and the fine particle materials are discharged out of the apparatus from the fourth discharge hole 82.

In summary, the present invention has at least the following advantages:

the grading equipment realizes grading of the particle materials by adopting a scattering mechanism, a grading mechanism and a separator, can divide the particle materials into at least four particle size intervals, enriches the dimension of particle grading, and has higher particle grading precision and grading efficiency;

the scattering mechanism, the primary grading mechanism and the secondary grading mechanism are respectively provided with an independent driving structure, so that the scattering mechanism, the primary grading mechanism and the secondary grading mechanism can rotate at different rotating speeds, the adjustment of different sorting particle sizes is realized, the adjustment range is convenient to adjust and improve, and the grading efficiency and precision of materials are improved;

the discharging pipe of third hopper is equipped with and shakes the material structure, can prevent to block up, effectively improves the smooth and easy nature of the ejection of compact.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims (15)

1. A grading apparatus, comprising:

a housing (100) having an air inlet (112) and a first air outlet (122);

a breaking mechanism (300) comprising a breaking disc (31) arranged in the housing (100) and capable of actively rotating;

a feed member (200) provided on the housing (100) and for feeding the scattering disk (31);

a classification mechanism including a classification rotor disposed in the housing (100) and actively rotatable;

a receiving structure at least partially disposed in the housing (100) for receiving the classified particulate material; and

a separator (800) in communication with the first outlet (122) and configured to separate particles flowing out of the housing (100);

the grading mechanism is located above the scattering mechanism (300) and is provided with a plurality of receiving structures along the direction from the air inlet (112) to the first air outlet (122), and the receiving structures are multiple in number and are respectively used for receiving particle materials with different particle size intervals.

2. The grading device according to claim 1, wherein the housing (100) comprises:

the air inlet drum (11), the air inlet (112) is positioned on the air inlet drum (11);

the air outlet barrel (12), the first air outlet (122) is positioned on the air outlet barrel (12); and

the grading cylinder (13) is communicated between the air inlet cylinder (11) and the air outlet cylinder (12);

wherein, go out a dryer (12), hierarchical section of thick bamboo (13) and air inlet section of thick bamboo (11) top-down sets up, break up mechanism (300) with the hierarchical mechanism all is located in hierarchical section of thick bamboo (13).

3. The classification apparatus according to claim 2, wherein the air inlet drum (11) includes an air inlet chamber (111) communicated with the air inlet (112), a first air guiding cone (113) is disposed in the air inlet chamber (111), and an outer diameter of the first air guiding cone (113) is gradually reduced in a direction from the air inlet (112) to the first air outlet (122).

4. The classifying apparatus according to claim 1, wherein the scattering disk (31), the feed member (200) and the classifying mechanism are arranged in sequence in a direction from the air inlet (112) to the first air outlet (122).

5. The classifying apparatus according to claim 1, wherein the breaking mechanism (300) includes a first drive assembly (32), the first drive assembly (32) including a first drive shaft (321) rotatably connected to the housing (100) and a first drive member drivingly connected to the first drive shaft (321), the breaking disk (31) being secured to the first drive shaft (321).

6. The classification device as claimed in claim 2, wherein the classification mechanism comprises:

the primary grading mechanism (400) comprises a primary grading rotor (41) and a second driving assembly (42) for driving the primary grading rotor (41) to rotate;

the secondary grading mechanism (500) is positioned above the primary grading mechanism (400) and comprises a secondary grading rotor (51) and a third driving component (52) for driving the secondary grading rotor (51) to rotate;

and air guide structures (600) are arranged on the peripheries of the primary grading rotor (41) and the secondary grading rotor (51).

7. The classification apparatus of claim 6, wherein the material receiving structure comprises:

a first hopper (71) for receiving particulate material in the air inlet drum (11);

a second hopper (72) for receiving particulate material classified by said primary classification rotor (41); and

a third hopper (73) located in said second hopper (72) for receiving particulate material classified by said secondary classification rotor (51).

8. A classifying apparatus according to claim 7, wherein the first hopper (71), the second hopper (72) and the third hopper (73) are provided with discharge ports communicating with the outside.

9. A classifying apparatus according to claim 7, wherein the first hopper (71) includes a first outlet (712) communicating with the outside, the second hopper (72) communicating with the first hopper (71), particulate material in the second hopper (72) being flowable towards the first hopper (71) and out of the first outlet (712).

10. A classifying apparatus according to claim 7, wherein the third hopper (73) comprises a third discharge outlet (732), the third hopper (73) comprising an outlet pipe (733) extending from the third discharge outlet (732) to outside the casing (100), a shaking structure for shaking particulate material being provided in the outlet pipe (733).

11. The classification apparatus as recited in claim 10, wherein the material shaking structure comprises:

the material shaking piece (74) is arranged in the discharge pipe (733) and divides the discharge pipe (733) into a discharge cavity (734) and a blowing cavity (735);

the blowing piece is connected with the blowing cavity (735);

wherein the discharging cavity (734) is communicated with the discharging end of the third hopper (73), and the blowing piece can blow air to the blowing cavity (735) and shake the material shaking piece (74).

12. The classifying apparatus according to claim 7, wherein the one-stage classifying rotor (41) includes:

a first inner ring (411);

the first outer ring (412) is arranged around the first inner ring (411), and a plurality of first grading openings (4122) are formed in the first outer ring (412); and

a first flow chamber (414) located between the first inner race (411) and the first outer race (412) and communicating with the first stage port (4122);

wherein the first inner ring (411) guides the flow of particulate material from the secondary classifying rotor (51) to the third hopper (73).

13. The classification apparatus according to claim 12, wherein a second air guiding cone (416) is provided in the first flow chamber (414), and an outer diameter of the second air guiding cone (416) is gradually reduced in a direction from the air inlet (112) to the first air outlet (122).

14. A classifying device according to claim 6, characterized in that the two-stage classifying rotor (51) comprises:

a second inner race (511);

the second outer ring (512) is arranged outside the second inner ring (511) in a surrounding mode, and a plurality of second grading openings (5121) are formed in the second outer ring (512); and

a second flow chamber (514) located between the second inner race (511) and the second outer race (512) and communicating with the second stage ports (5121);

wherein the size of the second flow chamber (514) gradually increases in a direction from the air inlet (112) to the first air outlet (122).

15. The classification apparatus according to claim 1, wherein the separator (800) is a cyclone comprising a fourth outlet (82) at the bottom and a second outlet (81) at the top, and wherein a circulation line is connected between the second outlet (81) and the inlet (112), and wherein a fan is disposed on the circulation line.

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