CN117225704B - Superfine silicon carbide micro powder classifier based on air current classification - Google Patents
Superfine silicon carbide micro powder classifier based on air current classification Download PDFInfo
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Abstract
The invention discloses an air-flow-classification-based superfine silicon carbide micro powder classifier, which belongs to the technical field of silicon carbide micro powder classification and comprises a mounting base, wherein one side of the top of the mounting base is fixedly connected with an automatic feeding mechanism and a driving fan respectively, a material screening mechanism is arranged between the other side of the top of the mounting base and one side of the output end of the driving fan and one side of the automatic feeding mechanism, one end of the material screening mechanism is fixedly connected with a middle section connecting sleeve, the top of the middle section connecting sleeve is fixedly connected with a micro powder classifying cylinder, and the bottom of the inner wall of the micro powder classifying cylinder is fixedly connected with a plurality of spiral guide plates. The invention designs the automatic feeding mechanism, greatly improves the uniform distribution condition of the micro powder in the air flow, further improves the grading efficiency of the grader, and realizes the multiple grading of the silicon carbide powder by designing the top supporting mechanism, the secondary filtering mechanism and the primary filtering mechanism.
Description
Technical Field
The invention belongs to the technical field of classification of silicon carbide micro powder, and particularly relates to an ultrafine silicon carbide micro powder classifier based on air flow classification.
Background
Silicon carbide is an inorganic substance, the chemical formula is SiC, which is prepared by smelting raw materials such as quartz sand, petroleum coke (or coal coke), wood dust (salt is needed to be added in the production of green silicon carbide) and the like at high temperature through a resistance furnace, rare minerals exist in silicon carbide in nature, morsanite exists in the non-oxide high-technology refractory raw materials such as C, N, B, the silicon carbide is the most widely applied and economical one and can be called silicon carbide or refractory sand, the silicon carbide has stable chemical property, high heat conductivity coefficient, small thermal expansion coefficient and good wear resistance, besides the abrasive material, the silicon carbide produced in China is divided into black silicon carbide and green silicon carbide, the silicon carbide is mainly artificial due to the fact that the natural content is very small, the common method is to mix the quartz sand with the coke, add the salt and the wood dust into an electric furnace, heat the silicon carbide to about 2000 ℃ and obtain silicon carbide micro powder after various chemical process flows, and the obtained silicon carbide micro powder needs to be classified according to the particle size difference.
The prior classifying equipment for silicon carbide micro powder mainly blows carbonized powder through air flow to perform classification through a filter screen, small particle powder and large particle powder left outside the filter screen are taken away through the filter screen by the air flow to complete classification, but the prior equipment does not make auxiliary work for entering raw materials in the using process, the condition that micro powder is unevenly distributed in the air flow easily occurs, the efficiency of a classifier is affected, and meanwhile, the mode can only complete twice classification on the micro powder, and the classifying interval is single.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the superfine silicon carbide micro powder classifier based on air flow classification.
The technical scheme adopted for solving the technical problems is as follows: the superfine silicon carbide micro powder classifier based on air flow classification comprises a mounting base, wherein one side of the top of the mounting base is fixedly connected with an automatic feeding mechanism and a driving fan respectively, a material screening mechanism is arranged between the other side of the top of the mounting base and the output end of the driving fan and one side of the automatic feeding mechanism, and one end of the material screening mechanism is fixedly connected with a middle section connecting sleeve;
the top of the middle section connecting sleeve is fixedly connected with a micro powder classifying cylinder, the bottom of the inner wall of the micro powder classifying cylinder is fixedly connected with a plurality of spiral guide plates, the top of the micro powder classifying cylinder is fixedly connected with a top supporting mechanism, the center of the top supporting mechanism is provided with a secondary filtering mechanism, and the bottom of the top supporting mechanism is rotationally connected with a primary filtering mechanism;
the top supporting mechanism is characterized in that a protective cover is fixedly connected between one side of the top supporting mechanism and the top of the secondary filtering mechanism, a third motor is installed at the top of the protective cover, a first collecting barrel is fixedly connected to the bottom of the middle section connecting sleeve, a second collecting barrel is fixedly connected to one end of the primary filtering mechanism, and a filtering and air exhausting assembly is fixedly connected to the top of the second collecting barrel.
Further, the automatic feeding mechanism comprises two supporting frame plates fixedly connected to the top of the mounting base, the centers of the tops of the two supporting frame plates are respectively fixedly connected with a first motor and a transmission charging barrel, one side of the top of the transmission charging barrel is fixedly connected with a storage hopper, and the output end of the first motor is provided with a transmission auger in the transmission charging barrel.
Through above-mentioned technical scheme, add the silicon carbide miropowder inside the storage hopper, first motor drive transmission auger simultaneously and rotate in transmission feed cylinder inside, and then will follow the inside silicon carbide miropowder that drops of storage hopper and transmit.
Further, the screening mechanism includes the mechanism drain pan of fixed connection between driving fan and middle section adapter sleeve, the rear end face fixedly connected with second motor of mechanism drain pan, the output fixedly connected with eccentric shaft of second motor, one side fixedly connected with connecting rod of eccentric shaft outer wall, the top sliding connection of mechanism drain pan has movable sieve, and the one end rotation of movable sieve and connecting rod is connected, the top fixedly connected with installation cover shell of mechanism drain pan, the inner wall of installation cover shell is fixedly connected with one-level equipartition board and second grade equipartition board respectively, fixedly connected with top seal cover shell between the outer wall of installation cover shell's top and transmission feed cylinder.
Through above-mentioned technical scheme, the carborundum powder drops on one-level equipartition board and second grade equipartition board after the transmission, makes its even drop on the activity sieve, and the second motor can drive the eccentric shaft simultaneously and rotate, can drive the connecting rod and accomplish longitudinal movement because eccentric action, through the swing joint of connecting rod and activity sieve, realize the shake of activity sieve, and then evenly sift out the carborundum miropowder that will drop, drive the fan simultaneously and take out outside air and blow out, the circulation of air current takes away the carborundum powder that the mechanism drain pan was inside tremble off to inside the adapter sleeve along with the air current entering middle section.
Further, the top of the mechanism bottom shell is provided with a groove corresponding to the movable sieve plate, the length of the groove is larger than the width of the movable sieve plate, and the rear end of the movable sieve plate is fixedly connected with a connecting shaft block.
Through above-mentioned technical scheme, guaranteed that movable sieve can realize the reciprocating motion of certain degree in the recess and realize the shake, the connecting axle piece is convenient with connecting rod swing joint, and then realizes the drive of second motor.
Further, the widths of the parts of the spiral guide plates are the same, and the shape structure of the spiral guide plates changes along the curve of the inner wall of the micro powder classifying cylinder.
Through above-mentioned technical scheme, the spiral guide plate has played fine guide effect to the air current, makes the air current can follow the spiral of the classifying tube inner wall of miropowder and rise, in further entering one-level filtering mechanism that can be better, improves the efficiency of classifying.
Further, the top supporting mechanism comprises a sealing top cover fixedly connected to the top of the micro powder classifying cylinder, the bottom of the sealing top cover is fixedly connected with a bottom connecting supporting ring, one side of the top of the sealing top cover is fixedly connected with a limiting bearing sleeve, and the inner wall of the limiting bearing sleeve is provided with a double-tooth transmission assembly.
Through above-mentioned technical scheme, sealed top cap plays sealed effect, and its central through-hole is used for circulating the air current to and be used for installing second grade filter mechanism, and the bottom connection support ring is used for supporting the rotation of first grade filter mechanism, and double tooth drive assembly is used for the transmission between second grade filter mechanism and the first grade filter mechanism.
Further, the secondary filter mechanism is including installing the cross support frame at sealed top cap center, the center rotation of cross support frame is connected with the rotation pedestal, the top fixedly connected with spacing backup pad of rotation pedestal outer wall at the cross support frame, install a plurality of fixing bolts before cross support frame and the sealed top cap, the bottom fixedly connected with linking frame of rotation pedestal, linking frame's bottom is provided with the secondary filter mantle, the top fixedly connected with drive gear of rotation pedestal, be provided with the gear area between drive gear and the bidentate drive assembly top, the top of cross support frame is provided with the protection seal shell, one side fixedly connected with air current output tube of protection seal shell.
Through the technical scheme, the third motor drives the transmission gear to rotate, and then drives the rotation shaft post of bottom to rotate, the second grade filter mantle that makes the bottom is in the rotation state through the connection of linking frame, the air current through the first grade filtering mechanism carries the carborundum powder and passes the second grade filter mantle and export from only export air current output tube along the protection seal cover shell at last, the carborundum powder collection to minimum granule can be accomplished to the processing of export air current output tube other end, carry out the classification again to the powder in the air current when passing through the second grade filter mantle, the centrifugal force that produces also makes its surface can not remain the powder when the second grade filter mantle rotates simultaneously.
Further, the one-level filtering mechanism comprises a supporting toothed ring which is rotationally connected to a bottom connecting supporting ring and an arc-shaped pipeline which is fixedly connected to one side of the micro powder classifying cylinder, the bottom of the supporting toothed ring is fixedly connected with a one-level filtering cover, the bottom of the one-level filtering cover is fixedly connected with a bottom connecting cover, one end of the arc-shaped pipeline, which is close to the bottom connecting cover, is fixedly connected with a connector, and the top of the connector is fixedly connected with two fixing convex rings.
Through the technical scheme, the third motor drives the rotation of the transmission gear and drives the double-tooth transmission assembly at the other end through the gear, the supporting toothed ring is enabled to rotate on the bottom connecting supporting ring through the engagement of the bottom of the double-tooth transmission assembly, the powder with larger particles is left outside and finally falls into the first collecting barrel, the powder with smaller particles enters the first-stage filter cover, meanwhile, the powder with larger particles can fall into the first collecting barrel due to weakening of airflow force when the airflow spiral rises, the airflow rising in the spiral of the inner wall of the micro powder classifying barrel passes through the first-stage filter cover, the silicon carbide micro powder with larger particles is left outside, and the outer side of the first-stage filter cover is not blocked due to the rotating state of the first-stage filter cover.
Further, the double-tooth transmission assembly is meshed with the supporting toothed ring, and two grooves corresponding to the fixing convex rings are formed in the bottom of the bottom connecting cover.
Through above-mentioned technical scheme, engagement state has guaranteed to drive through the transmission of bidentate drive assembly and has supported the ring gear and realize rotating, the block between two recesses and the fixed bulge loop for pivoted bottom junction housing and fixed connector can realize connecting, and accomplish the transmission of powder, and there is certain gap recess and the fixed bulge loop of bottom junction housing bottom simultaneously, avoids appearing great friction when rotating, and the air current passes through comparatively difficultly in the gap of broken line shape.
Furthermore, a plurality of rolling steel balls are arranged between the cross support frame and the limiting support plate and between the limiting support plate and the support toothed ring.
Through the technical scheme, the rolling steel balls ensure the rotation support of the limiting support plate and the support toothed ring.
The beneficial effects of the invention are as follows: (1) According to the invention, the automatic feeding mechanism is designed to control the material conveying speed, and is matched with the driving fan and the sieving mechanism, so that silicon carbide powder can be uniformly sieved and dropped in the bottom shell of the mechanism, then the air flow is driven by the driving fan to enter the middle section connecting sleeve with the powder, and the air flow is spirally lifted along the inner wall of the micro powder classifying cylinder under the action of the plurality of spiral guide plates, so that the uniform distribution condition of micro powder in the air flow is greatly improved, the condition that the powder in the air flow is incompletely filled is avoided, the classifying efficiency of the classifier is further improved, the spirally lifted air flow is easier to enter the first-stage filter cover, and the filtering classifying efficiency is improved; (2) According to the invention, the top supporting mechanism, the secondary filtering mechanism and the primary filtering mechanism are designed, the transmission gear is driven to rotate through the third motor, and then the rotating shaft column at the bottom is driven to rotate, so that the secondary filtering cover at the bottom is in a rotating state through the connection of the connecting frame, meanwhile, the transmission gear also drives the double-tooth transmission assembly at the other end through the gear belt, the supporting toothed ring rotates on the bottom connecting supporting ring through the engagement of the bottom of the double-tooth transmission assembly, and further, the rotation of the primary filtering cover and the secondary filtering cover is realized, the powder filtered in the primary filtering cover and the secondary filtering cover is collected respectively, and the multiple classification of silicon carbide powder is realized.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of a portion of the structure of the present invention;
FIG. 3 is a transverse cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of a portion of the screening mechanism of the present invention;
FIG. 5 is a longitudinal cross-sectional view of FIG. 4;
FIG. 6 is a schematic view of the structure of the movable screen deck of the present invention;
FIG. 7 is a schematic view of the micro powder classifying cylinder structure of the invention;
FIG. 8 is a transverse cross-sectional view of FIG. 7;
FIG. 9 is an enlarged view of a portion of FIG. 8 at A;
FIG. 10 is a partial enlarged view at B in FIG. 8;
FIG. 11 is a schematic diagram of a two-stage filtration mechanism of the present invention;
FIG. 12 is a schematic view of the internal structure of the secondary filter mechanism of the present invention;
FIG. 13 is a schematic view of a portion of the structure of a secondary filter mechanism of the present invention;
FIG. 14 is a schematic view of the bottom attachment support ring structure of the present invention;
FIG. 15 is a schematic view of a portion of the structure of the primary filter mechanism of the present invention.
Reference numerals: 1. a mounting base; 2. an automatic feeding mechanism; 201. a support frame plate; 202. a first motor; 203. a transfer cartridge; 204. a storage hopper; 205. a transmission auger; 3. driving a fan; 4. a screening mechanism; 401. a mechanism bottom shell; 402. a second motor; 403. an eccentric shaft; 404. a connecting rod; 405. a movable screen plate; 406. installing a shell; 407. a first-level uniform distribution plate; 408. a second-stage uniform distribution plate; 409. a top seal case; 5. a middle section connecting sleeve; 6. a micropowder classifying cylinder; 7. a spiral deflector; 8. a top support mechanism; 801. sealing the top cover; 802. the bottom is connected with a supporting ring; 803. limiting bearing sleeve; 804. a double-tooth transmission assembly; 9. a secondary filtering mechanism; 901. a cross support frame; 902. rotating the shaft post; 903. a limit support plate; 904. a fixing bolt; 905. a connection frame; 906. a secondary filter housing; 907. a transmission gear; 908. a gear belt; 909. a protective sealing sleeve; 910. an air flow output pipe; 10. a primary filtering mechanism; 1001. a support ring gear; 1002. a first stage filter cover; 1003. the bottom is connected with the cover; 1004. an arc-shaped pipe; 1005. a connector; 1006. fixing the convex ring; 11. a protective cover; 12. a third motor; 13. a first collecting tank; 14. a second collecting barrel; 15. and filtering and exhausting the assembly.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-3, the superfine silicon carbide micro powder classifier based on air classification of this embodiment comprises a mounting base 1, one side at the top of the mounting base 1 is fixedly connected with an automatic feeding mechanism 2 and a driving fan 3 respectively, the automatic feeding mechanism 2 comprises two support frame plates 201 fixedly connected at the top of the mounting base 1, the centers of the tops of the two support frame plates 201 are fixedly connected with a first motor 202 and a transmission charging barrel 203 respectively, one side at the top of the transmission charging barrel 203 is fixedly connected with a storage hopper 204, the output end of the first motor 202 is provided with a transmission auger 205 in the transmission charging barrel 203, silicon carbide micro powder is added into the storage hopper 204, and meanwhile, the first motor 202 drives the transmission auger 205 to rotate in the transmission charging barrel 203, so that the silicon carbide micro powder falling from the inside of the storage hopper 204 is transmitted.
As shown in fig. 4-6, a screening mechanism 4 is installed between the other side of the top of the installation base 1 and one side of the output end of the driving fan 3 and the automatic feeding mechanism 2, the screening mechanism 4 comprises a mechanism bottom shell 401 fixedly connected between the driving fan 3 and a middle section connecting sleeve 5, the rear end surface of the mechanism bottom shell 401 is fixedly connected with a second motor 402, the output end of the second motor 402 is fixedly connected with an eccentric shaft 403, one side of the outer wall of the eccentric shaft 403 is fixedly connected with a connecting rod 404, the top of the mechanism bottom shell 401 is slidably connected with a movable sieve plate 405, the movable sieve plate 405 is rotationally connected with one end of the connecting rod 404, the top of the mechanism bottom shell 401 is fixedly connected with an installation casing 406, the inner wall of the installation casing 406 is respectively fixedly connected with a first-stage uniform distribution plate 407 and a second-stage uniform distribution plate 408, a top seal 409 is fixedly connected between the top of the installation casing 406 and the outer wall of the transmission material cylinder 203, the silicon carbide powder falls on the first-stage uniform distribution plate 407 and the second-stage uniform distribution plate 408 after being transmitted, so that the silicon carbide powder uniformly falls on the movable sieve plate 405, meanwhile, the second motor 402 can drive the eccentric shaft 403 to rotate, the connecting rod 404 can be driven by the eccentric effect to complete the longitudinal movement, the movable sieve plate 405 is enabled to shake through the movable connection of the connecting rod 404 and the movable sieve plate 405, the dropped silicon carbide micro powder is uniformly sieved out, the fan 3 is driven to pump out the outside air and blow out, the silicon carbide powder shaken off inside the mechanism bottom shell 401 is taken away by the circulation of air flow and enters the middle section connecting sleeve 5 along with the air flow, the top of the mechanism bottom shell 401 is provided with a groove corresponding to the movable sieve plate 405, the length of the groove is larger than the width of the movable sieve plate 405, the rear end of the movable sieve plate 405 is fixedly connected with a connecting shaft block, the movable sieve plate 405 is guaranteed to realize reciprocating motion to a certain extent in the groove to realize shaking, the connecting shaft block is conveniently movably connected with the connecting rod 404, further the driving of the second motor 402 is realized, and one end of the sieving mechanism 4 is fixedly connected with the middle section connecting sleeve 5.
As shown in fig. 7-14, the top of the middle section connecting sleeve 5 is fixedly connected with a micro powder classifying cylinder 6, the bottom of the inner wall of the micro powder classifying cylinder 6 is fixedly connected with a plurality of spiral guide plates 7, the widths of all parts of the spiral guide plates 7 are the same, the shape and structure of the spiral guide plates 7 change along the curve of the inner wall of the micro powder classifying cylinder 6, the spiral guide plates 7 play a good role in guiding the air flow, so that the air flow can spirally rise along the inner wall of the micro powder classifying cylinder 6, and further can better enter the primary filtering mechanism 10, the classifying efficiency is improved, the top of the micro powder classifying cylinder 6 is fixedly connected with a top supporting mechanism 8, the top supporting mechanism 8 comprises a sealing top cover 801 fixedly connected with the top of the micro powder classifying cylinder 6, the bottom of the sealing top cover 801 is fixedly connected with a bottom connecting supporting ring 802, one side of the top of the sealing top cover 801 is fixedly connected with a limiting bearing sleeve 803, the inner wall of the limit bearing sleeve 803 is provided with a double-tooth transmission assembly 804, the seal top cover 801 plays a role of sealing, a through hole in the center of the seal top cover 801 is used for circulating air flow and is used for installing a secondary filter mechanism 9, a bottom connecting support ring 802 is used for supporting the rotation of a primary filter mechanism 10, the double-tooth transmission assembly 804 is used for transmission between the secondary filter mechanism 9 and the primary filter mechanism 10, a top supporting mechanism 8 is centrally provided with the secondary filter mechanism 9, the secondary filter mechanism 9 comprises a cross support frame 901 installed in the center of the seal top cover 801, the center of the cross support frame 901 is rotationally connected with a rotating shaft column 902, the outer wall of the rotating shaft column 902 is fixedly connected with a limit support plate 903 at the top of the cross support frame 901, a plurality of fixing bolts 904 are installed before the cross support frame 901 and the seal top cover 801, the bottom of the rotating shaft column 902 is fixedly connected with a connecting frame 905, the bottom of the connecting frame 905 is provided with a secondary filter cover 906, the top of the rotating shaft post 902 is fixedly connected with a transmission gear 907, a gear belt 908 is arranged between the transmission gear 907 and the top of the double-tooth transmission assembly 804, the top of the cross support frame 901 is provided with a protective sealing sleeve shell 909, one side of the protective sealing sleeve shell 909 is fixedly connected with an airflow output pipe 910, the third motor 12 drives the transmission gear 907 to rotate, and then the rotating shaft post 902 at the bottom is driven to rotate, the secondary filter cover 906 at the bottom is in a rotating state through the connection of the connecting frame 905, the airflow passing through the primary filter mechanism 10 carries silicon carbide powder to pass through the secondary filter cover 906 and finally output from the unique outlet airflow output pipe 910 along the protective sealing sleeve shell 909, the other end of the outlet airflow output pipe 910 is processed, the collection of the silicon carbide powder with minimum particles can be completed, the powder in the airflow is classified again when passing through the secondary filter cover 906, and meanwhile the centrifugal force generated when the secondary filter cover 906 rotates can not leave the powder on the surface.
As shown in fig. 8-15, the bottom of the top supporting mechanism 8 is rotatably connected with a first stage filtering mechanism 10, the first stage filtering mechanism 10 comprises a supporting toothed ring 1001 rotatably connected to a bottom connecting supporting ring 802 and an arc-shaped pipeline 1004 fixedly connected to one side of the micro powder classifying cylinder 6, the bottom of the supporting toothed ring 1001 is fixedly connected with a first stage filtering cover 1002, the bottom of the first stage filtering cover 1002 is fixedly connected with a bottom connecting cover 1003, the arc-shaped pipeline 1004 is fixedly connected with a connector 1005 at one end close to the bottom connecting cover 1003, the top of the connector 1005 is fixedly connected with two fixed convex rings 1006, the third motor 12 drives a transmission gear 907 to rotate and drives a double-tooth transmission assembly 804 at the other end through a gear belt 908, the supporting toothed ring 1001 rotates on the bottom connecting supporting ring 802 through the engagement of the bottom of the double-tooth transmission assembly 804, and larger particle powder finally falls into the first collecting cylinder 13 from the outside, the powder with smaller particles enters the first-stage filter cover 1002, and at the same time, when the airflow spirally rises, the powder with larger particles finally falls into the first collecting barrel 13 due to the weakening of airflow force, the airflow spirally rising on the inner wall of the micro powder classifying barrel 6 passes through the first-stage filter cover 1002, the silicon carbide micro powder with larger particles stays outside, and the outer side of the first-stage filter cover 1002 is not blocked due to the rotating state of the first-stage filter cover 1002, the double-tooth transmission assembly 804 is meshed with the supporting toothed ring 1001, two grooves corresponding to the fixed toothed ring 1006 are formed at the bottom of the bottom connecting cover 1003, the meshing state ensures that the supporting toothed ring 1001 can be driven to rotate through the transmission of the double-tooth transmission assembly 804, the clamping between the two grooves and the fixed toothed ring 1006 can realize the connection of the rotating bottom connecting cover 1003 and the fixed connecting head 1005, and the powder is transferred, meanwhile, a certain gap exists between the groove at the bottom of the bottom connecting cover 1003 and the fixed convex ring 1006, so that larger friction is avoided during rotation, and the air flow in the gap in the shape of a fold line is difficult to pass, a plurality of rolling steel balls are arranged between the cross support frame 901 and the limit support plate 903 and between the limit support plate 903 and the support toothed ring 1001, and the rolling steel balls ensure the rotation support of the limit support plate 903 and the support toothed ring 1001.
As shown in fig. 1, a protection cover 11 is fixedly connected between one side of the top supporting mechanism 8 and the top of the secondary filtering mechanism 9, a third motor 12 is installed at the top of the protection cover 11, a first collecting barrel 13 is fixedly connected to the bottom of the middle section connecting sleeve 5, a second collecting barrel 14 is fixedly connected to one end of the primary filtering mechanism 10, and a filtering air extraction assembly 15 is fixedly connected to the top of the second collecting barrel 14.
The working principle of this embodiment is as follows, adding silicon carbide micropowder into the storage hopper 204, simultaneously, the first motor 202 drives the transmission auger 205 to rotate in the transmission charging barrel 203, and then the silicon carbide micropowder falling from the storage hopper 204 is transmitted until reaching the other end and falling on the first-stage uniform distribution plate 407 and the second-stage uniform distribution plate 408, so that the silicon carbide micropowder uniformly falls on the movable sieve plate 405, simultaneously, the second motor 402 drives the eccentric shaft 403 to rotate, the connecting rod 404 is driven by the eccentric effect to complete the longitudinal movement, the movable sieve plate 405 is enabled to shake through the movable connection of the connecting rod 404, the falling silicon carbide micropowder is further evenly sieved out, meanwhile, the fan 3 is driven to extract the outside air and blow out, the circulation of the air flow takes away the silicon carbide micropowder which is shaken off in the mechanism bottom shell 401, and enters the middle section connecting sleeve 5 along with the air flow, and because the first collecting barrel 13 has no opening, the air flow only flows upwards, and the air flow enters along the inner wall of the middle section connecting sleeve 5, and is in a rotating state along the middle section 5, and under the action of the plurality of spiral guide plates 7, the air flow is enabled to rise until the air flow spiral to take up, the silicon carbide micropowder enters the first stage 1002, and finally, the powder falls off in the inside the first stage 1002 due to the larger spiral dust particles, and finally, the dust particles fall down in the inside the first stage dust particles is collected in the inner stage 13 due to the fact that the dust is larger;
the third motor 12 drives the transmission gear 907 to rotate, and then drives the rotating shaft post 902 at the bottom to rotate, so that the second filter cover 906 at the bottom is in a rotating state through the connection of the connecting frame 905, meanwhile, the rotation of the transmission gear 907 drives the double-tooth transmission assembly 804 at the other end through the gear belt 908, and the engagement of the bottom of the double-tooth transmission assembly 804 enables the supporting tooth ring 1001 to rotate on the bottom connecting support ring 802, so that the rotation of the first filter cover 1002 and the second filter cover 906 is realized, when the air flow enters the first filter cover 1002, the silicon carbide micro powder with larger particles is left outside, and the outer side of the first filter cover 1002 is not blocked due to the rotating state of the first filter cover 1002, and then the second collecting barrel 14 is also in a sealing state, the air current can pass the second grade filter house 906 and finally follow the output of the only export air current output tube 910 along the sealed shell 909 of protection, handle at the export air current output tube 910 other end, can accomplish the silicon carbide powder collection to minimum granule, carry out the classification again to the powder in the air current when passing through the second grade filter house 906, the same reason, the centrifugal force that produces when the second grade filter house 906 rotates also makes its surface can not remain the powder, the miropowder under can drop in bottom connecting cover 1003 and arc pipeline 1004 inside, can get into in the second collecting vessel 14 after constantly accumulating, after accomplishing the classification operation later, need not to continue to add the silicon carbide powder, can start the filtration pumping subassembly 15, draw into in the second collecting vessel 14 with the powder in bottom connecting cover 1003 and the arc pipeline 1004, and then accomplished the multiple classification to the silicon carbide miropowder.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (5)
1. Superfine carborundum miropowder grader based on air current is graded, including installing base (1), its characterized in that: one side at the top of the installation base (1) is fixedly connected with an automatic feeding mechanism (2) and a driving fan (3) respectively, a screening mechanism (4) is installed between the other side at the top of the installation base (1) and the output end of the driving fan (3) and one side of the automatic feeding mechanism (2), the screening mechanism (4) comprises a mechanism bottom shell (401) fixedly connected between the driving fan (3) and a middle section connecting sleeve (5), a second motor (402) is fixedly connected to the rear end face of the mechanism bottom shell (401), an eccentric shaft (403) is fixedly connected to the output end of the second motor (402), a connecting rod (404) is fixedly connected to one side of the outer wall of the eccentric shaft (403), a movable screen plate (405) is connected to the top of the mechanism bottom shell (401) in a sliding mode, the movable screen plate (405) is rotationally connected with one end of the connecting rod (404), a first-stage uniformly distributed plate (407) and a second uniformly distributed plate (408) are fixedly connected to the inner wall of the installation casing (406) respectively, and one end of the top of the installation casing (406) is fixedly connected with the middle section (4);
the top fixedly connected with miropowder classification section of thick bamboo (6) of middle section adapter sleeve (5), the bottom fixedly connected with of miropowder classification section of thick bamboo (6) inner wall a plurality of spiral guide plates (7), the top fixedly connected with top supporting mechanism (8) of miropowder classification section of thick bamboo (6), top supporting mechanism (8) are including sealing top cap (801) of fixedly connected with at miropowder classification section of thick bamboo (6) top, the bottom fixedly connected with bottom connection support ring (802) of sealing top cap (801), one side fixedly connected with spacing bearing bush (803) at sealing top cap (801) top, double-tooth drive assembly (804) are installed to the inner wall of spacing bearing bush (803), top supporting mechanism (8) are provided with second grade filtering mechanism (9) in the center, filtering mechanism (9) are including installing cross support frame (901) at sealing top cap (801) center, the center rotation of cross support frame (901) is connected with rotation pedestal (902), the outer wall is at the top fixedly connected with spacing backup pad (903) of cross support frame (901), cross support frame (801) and second grade (905) are installed before sealing top (904) is fixed with the fixed connection of a plurality of sealing top (904), the bottom of the connecting frame (905) is provided with a secondary filter cover (906), the top of the rotating shaft post (902) is fixedly connected with a transmission gear (907), a gear belt (908) is arranged between the transmission gear (907) and the top of the double-tooth transmission assembly (804), the top of the cross support frame (901) is provided with a protective sealing sleeve shell (909), one side of the protective sealing sleeve shell (909) is fixedly connected with an air flow output pipe (910), the bottom of the top support mechanism (8) is rotationally connected with a primary filter mechanism (10), the primary filter mechanism (10) comprises a support toothed ring (1001) rotationally connected to the bottom connecting support ring (802) and an arc-shaped pipeline (1004) fixedly connected to one side of the micro-powder classification cylinder (6), the bottom of the support toothed ring (1001) is fixedly connected with a primary filter cover (1002), the bottom of the primary filter cover (1002) is fixedly connected with a bottom connecting cover (1003), one end, close to the bottom connecting cover (1003), of the arc-shaped pipeline (1004) is fixedly connected with a connector (1005), the top of the connector (1005) is fixedly connected with two convex rings (1006) and the two toothed rings (804) are meshed with the transmission assembly (804), two grooves corresponding to the fixed convex rings (1006) are formed in the bottom of the bottom connecting cover (1003);
the novel filter is characterized in that a protective cover (11) is fixedly connected between one side of the top supporting mechanism (8) and the top of the secondary filter mechanism (9), a third motor (12) is installed at the top of the protective cover (11), a first collecting barrel (13) is fixedly connected to the bottom of the middle section connecting sleeve (5), a second collecting barrel (14) is fixedly connected to one end of the primary filter mechanism (10), and a filtering and air exhausting assembly (15) is fixedly connected to the top of the second collecting barrel (14).
2. The superfine silicon carbide micro powder classifier based on air classification according to claim 1, wherein the automatic feeding mechanism (2) comprises two support frame plates (201) fixedly connected to the top of the installation base (1), the top centers of the two support frame plates (201) are respectively fixedly connected with a first motor (202) and a transmission charging barrel (203), one side of the top of the transmission charging barrel (203) is fixedly connected with a storage hopper (204), and the output end of the first motor (202) is provided with a transmission auger (205) inside the transmission charging barrel (203).
3. The superfine silicon carbide micro powder classifier based on air classification according to claim 1, wherein a groove corresponding to the movable sieve plate (405) is formed in the top of the mechanism bottom shell (401), the length of the groove is larger than the width of the movable sieve plate (405), and a connecting shaft block is fixedly connected to the rear end of the movable sieve plate (405).
4. The air-flow classification-based ultrafine silicon carbide micro powder classifier as claimed in claim 1, wherein the widths of the portions of the spiral guide plates (7) are the same, and the shape and structure of the spiral guide plates (7) are changed along the curve of the inner wall of the micro powder classifying cylinder (6).
5. The superfine silicon carbide micro powder classifier based on air flow classification according to claim 1, wherein a plurality of rolling steel balls are arranged between the cross support frame (901) and the limit support plate (903) and between the limit support plate (903) and the support toothed ring (1001).
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