CN115364976B - Ultrahigh-pressure ceramic dielectric material production system and production method - Google Patents
Ultrahigh-pressure ceramic dielectric material production system and production method Download PDFInfo
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- CN115364976B CN115364976B CN202210411905.2A CN202210411905A CN115364976B CN 115364976 B CN115364976 B CN 115364976B CN 202210411905 A CN202210411905 A CN 202210411905A CN 115364976 B CN115364976 B CN 115364976B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000919 ceramic Substances 0.000 title claims abstract description 20
- 239000003989 dielectric material Substances 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 159
- 238000000227 grinding Methods 0.000 claims abstract description 139
- 230000007246 mechanism Effects 0.000 claims abstract description 114
- 239000002994 raw material Substances 0.000 claims abstract description 89
- 239000000843 powder Substances 0.000 claims abstract description 68
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 25
- 239000002826 coolant Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000002441 reversible effect Effects 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000001354 calcination Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000003746 solid phase reaction Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/10—Mills in which a friction block is towed along the surface of a cylindrical or annular member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C19/186—Use of cold or heat for disintegrating
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Abstract
The invention discloses a production system and a production method of an ultrahigh-pressure ceramic dielectric material, wherein the system comprises a plurality of cold grinding mechanisms which are in transmission connection with a power motor through a transmission mechanism, the inlets of the cold grinding mechanisms are connected with a mixing tank, the mixing tank is provided with an inlet main pipe for raw materials to enter, the outlet of each cold grinding mechanism is communicated with the inlet of a primary heating mechanism, and the outlet of the primary heating mechanism is communicated with the inlet of a secondary heating mechanism. The invention improves the crushing and mixing efficiency of the raw materials, ensures that the fineness of the ground raw materials reaches a preset range, avoids the caking of the raw material powder, and effectively improves the subsequent drying and calcining continuity of the raw material powder. The invention is suitable for the technical field of production and processing of ultrahigh-pressure ceramic dielectric materials.
Description
Technical Field
The invention belongs to the technical field of ceramic dielectric material production and processing, and particularly relates to an ultrahigh-pressure ceramic dielectric material production system and an ultrahigh-pressure ceramic dielectric material production method.
Background
At present, in the process of producing and processing ceramic dielectric materials, raw materials need to be crushed, calcined and mixed so that the raw materials reach a certain particle fineness. The crushing of raw materials is mostly carried out at normal temperature, the crushing effect is poor, the crushing fineness is extremely difficult to reach the expected value in a short time, and long-time repeated crushing is needed to achieve the particle size of the particles after the crushing of the raw materials within a preset range. Moreover, the crushed raw material is extremely easy to agglomerate after calcination, and grinding equipment is required to be additionally arranged to crush agglomerated raw material powder.
Disclosure of Invention
The invention provides a production system and a production method of an ultrahigh-pressure ceramic dielectric material, which are used for improving the crushing and mixing efficiency of raw materials, enabling the fineness of the raw materials after grinding to reach a preset range, avoiding the occurrence of caking of raw material powder, and effectively improving the subsequent drying and calcination continuity of the raw material powder.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an ultrahigh pressure ceramic dielectric material production system, includes a plurality of cold mill mechanisms of being connected through drive mechanism and power motor transmission, and these cold mill mechanism's import is connected with the compounding jar, the compounding jar has the import house steward that supplies the raw materials to get into, each cold mill mechanism's export communicates with the import of one-level heating mechanism, one-level heating mechanism's export communicates with the import of second grade heating mechanism.
Further, the cold grinding mechanism comprises a first hemispherical shell and a second hemispherical shell which are arranged in the outer shell, the first hemispherical shell and the second hemispherical shell are mutually buckled to form a complete outer grinding shell, an inner grinding shell is arranged in the outer grinding shell, a grinding space is formed between the outer grinding shell and the inner grinding shell, a feeding pipe which extends outwards along the radial direction of the feeding pipe is constructed on the second hemispherical shell, a transmission rod which extends outwards along the radial direction of the inner grinding shell is constructed on the inner grinding shell, the transmission rod penetrates through the first hemispherical shell and is connected with the first hemispherical shell in a rotating mode, and the feeding pipe and the transmission rod are respectively connected with the transmission mechanism in a transmission mode and are provided with cooling units in the inner grinding shell.
Further, the cooling unit comprises a plurality of cooling pipes which are uniformly distributed in the inner grinding shell, a cooling medium inlet channel and a cooling medium return channel are formed in the transmission rod, two ends of each cooling pipe are respectively communicated with the cooling medium inlet channel and the cooling medium return channel, a first adapter is rotatably installed on the transmission rod, and the cooling medium inlet channel and the cooling medium return channel are respectively communicated with the refrigerator through the first adapter.
Further, the mutually approaching ends of the first half spherical shell and the second half spherical shell are respectively provided with a first material passing net barrel and a second material passing net barrel, the second material passing net barrels are inserted into the first material passing net barrels, and the radial sections of the first material passing net barrels and the second material passing net barrels are regular polygons; the feeding pipe is communicated with the mixing tank through the telescopic pipe, and an adjusting air bag is arranged between the mixing tank and the feeding pipe.
Further, the transmission mechanism comprises a first gear ring and a second gear ring which are connected through a connecting frame, the axis of the first gear ring is coincident with the axis of the second gear ring, the radius of the first gear ring is smaller than that of the second gear ring, and the first gear ring is higher than that of the second gear ring; and a first gear is arranged on each feeding pipe, the first gear is positioned below the first gear ring and is meshed with the first gear ring, a second gear is arranged on each transmission rod, the second gear is positioned above the second gear ring and is meshed with the second gear ring, and an output shaft of the power motor is connected with the connecting frame.
Further, the primary heating mechanism comprises a heating stirring unit arranged in the heating kettle, and a conveying unit is arranged at the lower end of the heating stirring unit.
Further, the heating stirring unit comprises a forward and reverse rotation motor with an output shaft connected with a stirring installation rod, a plurality of heating parts are arranged on the stirring installation rod and uniformly arranged along the circumferential direction of the stirring installation rod, each heating part comprises a plurality of heating branch pipes connected through heating manifolds, the heating branch pipes are arranged at intervals along the axial direction of the stirring installation rod, a heating medium inlet channel and a heating medium reflux channel are formed in the stirring installation rod, the heating medium inlet channel is communicated with an annular distribution channel, the annular distribution channel is formed in the stirring installation rod, the inlet end of each heating manifold is communicated with the annular distribution channel, the outlet ends of each heating branch pipe and each heating manifold are communicated with the heating medium reflux channel, a second adapter is arranged on the stirring installation rod, and the heating medium inlet channel and the heating medium reflux channel are respectively communicated with a steam inlet pipe and a steam outlet pipe.
Further, the conveying unit comprises a first spiral blade which is arranged at the lower part of the stirring installation rod, a discharge cylinder is arranged at the lower end of the heating kettle, and the first spiral blade is positioned in the discharge cylinder; and a vacuumizing joint is arranged at the upper part of the heating kettle.
Further, the secondary heating mechanism comprises a guide cylinder coaxially arranged at the center of the high-temperature heating tank, a driving rod stretches into the guide cylinder along the axis of the guide cylinder, a second helical blade is constructed on the driving rod, the lower end of the driving rod extends out of the lower end of the guide cylinder, a grinding body is connected with the lower end of the driving rod, a grinding bucket with a downward caliber gradually reduced along the axis of the grinding body is constructed at the lower part of the high-temperature heating tank, a grinding gap is formed between the grinding body and the grinding bucket, and a discharging pipe is constructed at the lower end of the grinding bucket; the upper end of the grinding body is connected with a material conveying rotary drum, the upper end of the material conveying rotary drum is lower than the upper end of the high-temperature heating tank, the material conveying rotary drum is positioned between the material guiding drum and the high-temperature heating tank, an inner spiral blade and an outer spiral blade are respectively constructed on the inner wall and the outer wall of the material conveying rotary drum, and the inner spiral blade and the outer spiral blade extend to the two ends of the material conveying rotary drum along the axis of the material conveying rotary drum; a first electric heating wire extending spirally is constructed in the peripheral wall of the guide cylinder, and a second electric heating wire extending spirally is constructed outside the peripheral wall of the high-temperature heating tank.
The production method based on the ultrahigh pressure ceramic dielectric material production system comprises the following steps:
s1, starting a power motor and a forward and backward rotating motor to enable the power motor and the forward and backward rotating motor to operate;
s2, the raw materials pass through a mixing tank and are mixed, and the mixed raw materials are uniformly distributed into each cold grinding mechanism;
s3, grinding the raw materials entering the cold grinding mechanism, and refrigerating the raw materials in the grinding process, so that the temperature in the cold grinding mechanism is between-70 ℃ and-65 ℃;
s4, the powder after cold grinding enters a first-stage heating mechanism to be preheated, so that the temperature of the powder is gradually increased until the temperature reaches 300-340 ℃;
s5, the preheated powder enters a secondary heating mechanism and is gradually heated, so that the temperature of the powder reaches 1000-1200 ℃;
and S6, finally, discharging the high-temperature powder by a secondary heating mechanism.
Compared with the prior art, the invention adopts the structure, and the technical progress is that: the mixed raw materials enter the mixing tank synchronously through the inlet main pipe and are mixed in the mixing tank, the mixed raw materials uniformly enter each cold grinding mechanism, and the cold grinding mechanism is in transmission connection with the transmission mechanism, so that the power motor drives the transmission mechanism to drive the cold grinding mechanism to operate, namely the cold grinding mechanism grinds the mixed raw materials entering the cold grinding mechanism, and the cold grinding mechanism refrigerates the mixed raw materials in the grinding process, so that the temperature in the cold grinding mechanism is between-70 ℃ and-65 ℃, therefore, the mixed raw materials are very fragile in a relatively cold environment, the grinding is facilitated, meanwhile, the particle size of the ground powder is very fine, and the superfine powder is beneficial to improving the performance of the subsequent ultrahigh-pressure ceramic medium; the raw material powder is discharged into a first-stage heating mechanism by a cold grinding mechanism, the first-stage heating mechanism heats the raw material powder to enable the temperature of the raw material powder to be transited to 300-340 ℃, a little moisture in the raw material powder is dried in the process of gradually heating the raw material powder, the heated raw material powder enters a second-stage heating mechanism, the second-stage heating mechanism heats the raw material powder to enable the raw material powder to be gradually heated to 1000-1200 ℃, the solid phase reaction of each raw material powder is enabled to be complete in a high-temperature environment, the electrical property of a subsequent blank body is improved, the moisture is gradually separated, the raw material powder is crushed in the second-stage heating mechanism after the solid phase reaction, and the occurrence of hardening is avoided; in summary, the invention improves the crushing and mixing efficiency of the raw materials, ensures that the fineness of the ground raw materials reaches a preset range, avoids the caking of the raw material powder, and effectively improves the subsequent drying and calcining continuity of the raw material powder.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the embodiment of the present invention with the primary and secondary heating mechanisms removed;
FIG. 3 is a schematic view of the structure of FIG. 2 at another angle;
FIG. 4 is a schematic diagram of a cold grinding mechanism according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the structure of the portion A in FIG. 4;
FIG. 6 is a partial cross-sectional view of a cold grinding mechanism according to an embodiment of the invention;
FIG. 7 is a front view of the structure of the first half-shell and the second half-shell according to the embodiment of the present invention after they are connected;
FIG. 8 is an axial cross-sectional view of the cold grinding mechanism of the present invention with the outer casing removed;
FIG. 9 is a schematic diagram of a primary heating mechanism according to an embodiment of the present invention;
FIG. 10 is a schematic view showing the structures of a heating and stirring unit and a conveying unit according to an embodiment of the present invention;
FIG. 11 is a partial sectional view of a heating and stirring unit according to an embodiment of the present invention;
fig. 12 is an axial structural cross-sectional view of a secondary heating mechanism according to an embodiment of the invention.
Marking parts: 100-transmission mechanism, 101-power motor, 102-first gear ring, 103-second gear ring, 104-connecting frame, 200-first-stage heating mechanism, 201-heating kettle, 202-feeding connector, 203-discharging cylinder, 204-vacuumizing connector, 205-forward and backward rotating motor, 206-second adapter, 207-stirring mounting rod, 208-heating part, 2081-heating main pipe, 2082-heating connecting pipe, 2083-heating branch pipe, 209-first helical blade, 210-heating medium inlet channel, 211-annular distribution channel, 212-heating medium reflux channel, 300-second-stage heating mechanism, 301-high-temperature heating cylinder, 302-connector, 303-discharging pipe, 304-guiding cylinder, 305-feeding rotary drum, 306-first chamber, 307-second chamber, 308-third chamber, 309-drive rod, 310-second screw blade, 311-inner screw blade, 312-outer screw blade, 313-grinding body, 314-grinding bucket, 315-grinding gap, 316-first electric heating wire, 317-second electric heating wire, 400-cold grinding mechanism, 401-outer housing, 402-first gear, 403-second gear, 404-feed tube, 405-blocking edge, 406-telescoping tube, 407-adjusting balloon, 408-fixed edge, 409-drive rod, 410-cold grinding outlet, 411-positive pressure port, 412-mixing tank, 413-inlet manifold, 414-first adapter, 415-first hemispherical shell, 416-second hemispherical shell, 417-first passing net barrel, 418-second passing net barrel, 419-inner grinding shell, 420-grinding space, 421-cooling pipe, 422-cooling medium inlet channel, 423-cooling medium return channel.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are presented for purposes of illustration and explanation only and are not intended to limit the present invention.
The invention discloses an ultrahigh-pressure ceramic dielectric material production system, which is shown in fig. 1 and comprises a power motor 101, a transmission mechanism 100, a primary heating mechanism 200, a secondary heating mechanism 300 and a plurality of cold grinding mechanisms 400, wherein the power motor 101 is connected with the transmission mechanism 100, and the transmission mechanism 100 is in transmission connection with the plurality of cold grinding mechanisms 400. The inlets of these cold grinding mechanisms 400 are connected to a mixing tank 412, the mixing tank 412 having an inlet manifold 413 for the entry of feedstock, the outlet of each cold grinding mechanism 400 being in communication with the inlet of a primary heating mechanism 200, the outlet of the primary heating mechanism 200 being in communication with the inlet of a secondary heating mechanism 300. The invention has the following working principle and advantages: the raw materials synchronously enter the mixing tank 412 through the inlet header 413 and are mixed in the mixing tank 412, the mixed raw materials uniformly enter each cold grinding mechanism 400, and as the cold grinding mechanism 400 is in transmission connection with the transmission mechanism 100, the power motor 101 drives the transmission mechanism 100 to drive the cold grinding mechanism 400 to operate, namely the cold grinding mechanism 400 grinds the mixed raw materials entering the cold grinding mechanism, the cold grinding mechanism 400 refrigerates the mixed raw materials in the grinding process, so that the temperature in the cold grinding mechanism 400 is between-70 ℃ and-65 ℃, the mixed raw materials are very fragile in a relatively cold environment, the grinding is facilitated, and meanwhile, the particle size of the ground powder is very fine, so that the performance of the subsequent ultrahigh-pressure ceramic medium is improved; the raw material powder is discharged into the first-stage heating mechanism 200 by the cold grinding mechanism 400, the first-stage heating mechanism 200 heats the raw material powder to enable the temperature to be transited to 300-340 ℃, a little moisture in the raw material powder is dried in the process of gradually heating the raw material powder, the heated raw material powder enters the second-stage heating mechanism 300, the second-stage heating mechanism 300 heats the raw material powder to enable the raw material powder to gradually heat to 1000-1200 ℃, in a high-temperature environment, the solid phase reaction of each raw material powder is enabled to be complete for a long time, the electrical property of a subsequent blank body is improved, the moisture is gradually separated, the raw material powder is broken in the second-stage heating mechanism 300 after the solid phase reaction, and hardening is avoided; in summary, the invention improves the crushing and mixing efficiency of the raw materials, ensures that the fineness of the ground raw materials reaches a preset range, avoids the caking of the raw material powder, and effectively improves the subsequent drying and calcining continuity of the raw material powder.
As a preferred embodiment of the present invention, as shown in fig. 4 to 8, the cold grinding mechanism 400 includes an outer shell 401, a first half spherical shell 415, a second half spherical shell 416, an inner grinding shell 419 and a cooling unit, wherein the first half spherical shell 415 and the second half spherical shell 416 are disposed in the outer shell 401, and the first half spherical shell 415 and the second half spherical shell 416 are fastened to each other to form a complete outer grinding shell, the inner grinding shell 419 is disposed in the outer grinding shell, a grinding space 420 is formed between the outer grinding shell and the inner grinding shell 419, a feed pipe 404 is formed on the second half spherical shell 416, the feed pipe 404 extends radially outwardly of the second half spherical shell 416, a transmission lever 409 is formed on the inner grinding shell 419, the transmission lever 409 extends radially outwardly of the inner grinding shell 419, the transmission lever passes through the first half spherical shell 415 and is rotatably connected thereto, and an axis of the transmission lever 409 coincides with an axis of the feed pipe 404. The feed pipe 404 and the transmission rod 409 are respectively in transmission connection with the transmission mechanism 100, the cooling unit is arranged in the inner grinding shell 419, and the upper end and the lower end of the outer cover shell 401 are respectively provided with a positive pressure air port 411 and a cold grinding outlet 410. The working principle of the embodiment is as follows: the mixed raw materials enter the grinding space 420 through the feeding pipe 404, the power motor 101 drives the transmission mechanism 100 to act, the transmission mechanism 100 drives the outer grinding shell and the inner grinding shell 419 of each cold grinding mechanism 400 to reversely rotate, so that the mixed raw materials in the low-temperature grinding space 420 are ground into powder, and when the fineness of the raw material powder reaches the expected fineness, the raw material powder is discharged into the outer housing 401 from the grinding space 420 and enters the primary heating mechanism 200 from the cold grinding outlet 410. In special cases, such as when raw powder is accumulated in the outer shell 401 and is not easy to be discharged, it is necessary to use pressure gas to inject into the outer shell 401 through the positive pressure gas port 411 and blow through the cold mill outlet 410 to facilitate discharging.
As a preferred embodiment of the present invention, as shown in fig. 8, the cooling unit includes a plurality of cooling pipes 421, the cooling pipes 421 are uniformly disposed in the inner grinding shell 419, a cooling medium inlet channel 422 and a cooling medium return channel 423 are configured in the transmission rod 409, both ends of each cooling pipe 421 are respectively communicated with the cooling medium inlet channel 422 and the cooling medium return channel 423, as shown in fig. 4, a first adaptor 414 is rotatably mounted on the transmission rod 409, and the cooling medium inlet channel 422 and the cooling medium return channel 423 are respectively communicated with the refrigerator through the first adaptor 414, so that the cooling medium enters each cooling pipe 421 from the refrigerator through the first adaptor 414 and the cooling medium inlet channel 422, and flows back into the refrigerator through the cooling medium return channel 423 and the first adaptor 414, thereby realizing cooling of the mixed raw materials in the grinding space 420.
In order to facilitate the fine powder in the grinding space 420 to be discharged into the outer shell 401 and discharged from the cold mill outlet 410, as shown in fig. 6 to 7, the first half spherical shell 415 and the second half spherical shell 416 are respectively constructed with a first passing net barrel 417 and a second passing net barrel 418 at the mutually adjacent ends, wherein the second passing net barrel 418 is inserted into the first passing net barrel 417, and the radial cross sections of the first passing net barrel 417 and the second passing net barrel 418 are regular polygons, so that both are synchronously rotated under the transmission of the transmission mechanism 100. To facilitate the relative approaching or separating of the first hemispherical shell 415 and the second hemispherical shell 416, so as to achieve the staggered or overlapped state of the first passing net barrel 417 and the second passing net barrel 418, the staggered or overlapped state is the state that the grinding space 420 is communicated with the outer shell 401, so that the ground fine powder is conveniently discharged; or the first passing net drum 417 and the second passing net drum 418 are blocked by the two half spherical shells and the first half spherical shell 415, and the state is that the grinding space 420 is separated from the outer cover shell 401, so that continuous grinding of raw materials is realized. In particular, as shown in fig. 4-5. The feeding pipe 404 is communicated with the mixing tank 412 through the telescopic pipe 406, an adjusting air bag 407 is assembled between the mixing tank 412 and the feeding pipe 404, a fixing edge 408 is formed at the end part of the feeding pipe 404, the adjusting air bag 407 is installed between the fixing edge 408 and the mixing tank 412, and the adjusting air bag 407 is inflated and deflated to realize that the adjusting air bag drives the feeding pipe 404 to reciprocate along the axis of the feeding pipe 404, so that the feeding pipe 404 drives the second hemispherical shell 416 to move, and finally, the grinding space 420 and the inner cavity of the outer cover shell 401 are opened and closed.
As a preferred embodiment of the present invention, as shown in fig. 2 to 5, the transmission mechanism 100 includes a connecting carrier 104, a first ring gear 102, and a second ring gear 103, wherein the first ring gear 102 and the second ring gear 103 are connected by the connecting carrier 104, an axis of the first ring gear 102 and an axis of the second ring gear 103 coincide, and a radius of the first ring gear 102 is smaller than a radius of the second ring gear 103, and the first ring gear 102 is higher than the second ring gear 103. Each of the feeding pipes 404 is provided with a first gear 402, the first gear 402 and the feeding pipe 404 can relatively move axially, a blocking edge 405 is formed on the feeding pipe 404, the first gear 402 is located between the blocking edge 405 and the outer wall of the outer shell 401, and the first gear 402 is located below the first gear ring 102 and meshed with the first gear ring 102, and because the first gear 402 is meshed with the first gear ring 102, the first gear 402 in the embodiment is a helical gear, so that when the feeding pipe 404 is driven to move axially, the axial position of the first gear 402 is not changed; in order to realize synchronous rotation of the feeding pipe 404 and the first gear 402, a limiting groove extending along the axial direction of the feeding pipe 404 is formed on the outer wall of the feeding pipe 404, and a limiting block is constructed on the inner ring of the first gear 402 and is assembled in the limiting groove. In this embodiment, the second gear 403 is installed on each transmission rod 409, and the second gear 403 is located above the second gear ring 103 and is meshed with the second gear ring 103, the output shaft of the power motor 101 is connected with the connecting frame 104, so that the power motor 101 drives the connecting frame 104 to rotate, and the first gear ring 102 and the second gear ring 103 rotate along with the connecting frame 104 in the same direction, so that the first gear 402 and the second gear 403 rotate reversely, and finally, the reverse rotation of the outer grinding shell and the inner grinding shell 419 is realized, and the grinding efficiency is improved.
As a preferred embodiment of the present invention, as shown in fig. 9 to 11, the primary heating mechanism 200 includes a heating kettle 201 and a heating and stirring unit provided in the heating kettle 201, and a conveying unit is constructed at a lower end of the heating and stirring unit so as to sufficiently discharge raw material powder out of the heating kettle 201. A plurality of feed fittings 202 are constructed at the upper end of the heating kettle 201, each feed fitting 202 being in communication with a corresponding cold mill outlet 410. The specific structure of the heating and stirring unit in this embodiment is that the heating and stirring unit includes a forward and reverse rotation motor 205, a stirring installation rod 207 and a plurality of heating parts 208, wherein, the output shaft of the forward and reverse rotation motor 205 is connected with the stirring installation rod 207, the above-mentioned plurality of heating parts 208 are arranged on the stirring installation rod 207, these heating parts 208 are evenly arranged along the circumference of the stirring installation rod 207, each heating part 208 includes a heating manifold 2081, a heating connecting pipe 2082 and a plurality of heating branch pipes 2083, the heating manifold 2081 is communicated with each heating branch pipe 2083 through the heating connecting pipe 2082, these heating branch pipes 2083 are arranged along the axial interval of the stirring installation rod 207, and the indirect between the heating branch pipes 2083 is gradually reduced downwards along the vertical direction. In this embodiment, a heating medium inlet passage 210 and a heating medium return passage 212 are formed in the agitation mounting shaft 207, the heating medium inlet passage 210 communicates with an annular distribution passage 211, the annular distribution passage 211 is formed in the agitation mounting shaft 207, and an inlet end of each heating manifold 2081 communicates with the annular distribution passage 211, an outlet end of each heating manifold 2083 and each heating manifold 2081 communicates with the heating medium return passage 212, a second adapter 206 is mounted on the agitation mounting shaft 207, and the heating medium inlet passage 210 and the heating medium return passage 212 communicate with a steam inlet pipe and a steam outlet pipe, respectively. The forward and reverse rotation motor 205 drives the stirring installation rod 207 to rotate, the stirring installation rod 207 drives each heating part 208 to stir and heat the raw material powder in the heating kettle 201, and the heating parts 208 play roles in stirring and heating; because the indirect between the heating branch pipes 2083 gradually decreases downwards along the vertical direction, the hardened raw material powder is gradually crushed, and the heating effect of the lower part is effectively improved. The conveying unit of this embodiment includes a first helical blade 209 constructed at the lower part of the stirring installation rod 207, the lower end of the heating kettle 201 is constructed with a discharge cylinder 203, the first helical blade 209 is located in the discharge cylinder 203, when the forward and reverse rotation motor 205 rotates forward, the first helical blade 209 conveys the raw material powder in the heating kettle 201 to the secondary heating mechanism 300, and when the reverse rotation motor 205 rotates backward, the first helical blade 209 prevents the raw material powder in the heating kettle 201 from being conveyed to the secondary heating mechanism 300, so that the raw material powder is sufficiently heated in the heating kettle 201. In this embodiment, a vacuum-pumping joint 204 is configured at the upper part of the heating kettle 201, so as to increase the vacuum degree of the heating kettle 201, so that the raw material powder in the cold grinding mechanism 400 enters the heating kettle 201, and meanwhile, the raw material enters the grinding space 420 from the mixing tank 412 through the feeding pipe 404.
As a preferred embodiment of the present invention, as shown in fig. 12, the secondary heating mechanism 300 includes a high-temperature heating tank 301, a guide cylinder 304, and a feed drum 305, which are coaxially overlapped. Wherein, the guide cylinder 304 is arranged at the center of the high-temperature heating tank 301, a driving rod 309 extends into the guide cylinder along the axis of the guide cylinder 304, and the upper end of the driving rod 309 is connected with the lower end of the stirring installation rod 207. In this embodiment, the second spiral blade 310 is configured on the driving rod 309, the lower end of the driving rod 309 extends out of the lower end of the guide cylinder 304, the lower end of the driving rod 309 is connected with a grinding body 313, a grinding bucket 314 with a downward caliber tapered along the axis of the grinding body 313 is configured at the lower part of the high-temperature heating tank 301, a grinding gap 315 is formed between the grinding body 313 and the grinding bucket 314, and a discharging pipe 303 is configured at the lower end of the grinding bucket 314. The feeding drum 305 of the present embodiment is connected to the upper end of the grinding body 313, the upper end of the feeding drum 305 is lower than the upper end of the high-temperature heating tank 301, the feeding drum 305 is located between the guide drum 304 and the high-temperature heating tank 301, the inner spiral blade 311 and the outer spiral blade 312 are respectively constructed on the inner wall and the outer wall of the feeding drum 305, and both the inner spiral blade 311 and the outer spiral blade 312 extend to both ends of the feeding drum 305 along the axis of the feeding drum 305. A first electric heating wire 316 extending spirally is formed in the peripheral wall of the guide cylinder 304, and a second electric heating wire 317 extending spirally is formed outside the peripheral wall of the high-temperature heating tank 301. In this embodiment, a first material cavity 306 is formed in the guide cylinder 304, a second material cavity 307 is formed between the guide cylinder 304 and the material conveying cylinder 305, a third material cavity 308 is formed between the material conveying cylinder 305 and the high-temperature heating tank 301, raw material powder enters the first material cavity 306 through a connector 302 at the upper end of the high-temperature heating tank 301, raw material powder gradually enters the lower end of the guide cylinder 304 under the action of a second helical blade 310 along with driving of a driving rod 309 and enters the second material cavity 307, the material conveying cylinder 305 rotates along with the driving rod 309, and then the inner helical blade 311 conveys the raw material powder in the second material cavity 307 upwards until the raw material powder enters the third material cavity 308, the outer helical blade 312 conveys the raw material powder into a grinding gap 315, and the hardened raw material powder is ground by the grinding body 313 and then discharged through the discharging pipe 303. The first and second electric heating wires 316 and 317 continuously heat the raw material powder throughout the multi-stage transport process. The raw material powder of this embodiment is continuously and divided into multiple stages of conveyance, thus ensuring that the raw material powder is sufficiently heated and calcined.
The invention also discloses a production method based on the ultrahigh-pressure ceramic dielectric material production system, which comprises the following steps:
s1, starting the power motor 101 and the forward and backward rotation motor 205 to enable the power motor and the forward and backward rotation motor to operate;
s2, the raw materials pass through the mixing tank 412 and are mixed, and the mixed raw materials are uniformly distributed into each cold grinding mechanism 400;
s3, grinding the raw materials entering the cold grinding mechanism 400, and simultaneously refrigerating the raw materials in the grinding process, so that the temperature in the cold grinding mechanism 400 is between-70 ℃ and-65 ℃;
s4, the powder after cold grinding enters a first-stage heating mechanism 200 to be preheated, so that the temperature of the powder is gradually increased until the temperature reaches 300-340 ℃;
s5, the preheated powder enters the secondary heating mechanism 300 and is gradually heated, so that the temperature of the powder reaches 1000-1200 ℃;
and S6, finally, discharging the high-temperature powder by the secondary heating mechanism 300.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The utility model provides an ultrahigh pressure ceramic dielectric material production system which characterized in that: the device comprises a plurality of cold grinding mechanisms which are in transmission connection with a power motor through transmission mechanisms, wherein inlets of the cold grinding mechanisms are connected with a mixing tank, the mixing tank is provided with an inlet header pipe for raw materials to enter, an outlet of each cold grinding mechanism is communicated with an inlet of a primary heating mechanism, and an outlet of the primary heating mechanism is communicated with an inlet of a secondary heating mechanism; the primary heating mechanism comprises a heating stirring unit arranged in the heating kettle, and a conveying unit is constructed at the lower end of the heating stirring unit; the heating stirring unit comprises a forward and reverse rotation motor, an output shaft of the forward and reverse rotation motor is connected with a stirring installation rod, a plurality of heating parts are arranged on the stirring installation rod and are uniformly arranged along the circumferential direction of the stirring installation rod, each heating part comprises a plurality of heating branch pipes connected through heating main pipes, the heating branch pipes are arranged at intervals along the axial direction of the stirring installation rod, a heating medium inlet channel and a heating medium reflux channel are formed in the stirring installation rod, the heating medium inlet channel is communicated with an annular distribution channel, the annular distribution channel is formed in the stirring installation rod, the inlet end of each heating main pipe is communicated with the annular distribution channel, the outlet ends of each heating branch pipe and each heating main pipe are communicated with the heating medium reflux channel, a second adapter is arranged on the stirring installation rod, and the heating medium inlet channel and the heating medium reflux channel are respectively communicated with a steam inlet pipe and a steam outlet pipe; the cold grinding mechanism comprises a first hemispherical shell and a second hemispherical shell which are arranged in an outer shell, the first hemispherical shell and the second hemispherical shell are mutually buckled to form a complete outer grinding shell, an inner grinding shell is arranged in the outer grinding shell, a grinding space is formed between the outer grinding shell and the inner grinding shell, a feeding pipe which extends outwards along the radial direction of the feeding pipe is constructed on the second hemispherical shell, a transmission rod which extends outwards along the radial direction of the inner grinding shell is constructed on the inner grinding shell, the transmission rod penetrates through the first hemispherical shell and is in rotary connection with the first hemispherical shell, the feeding pipe and the transmission rod are respectively in transmission connection with the transmission mechanism, and a cooling unit is arranged in the inner grinding shell; the transmission mechanism comprises a first gear ring and a second gear ring which are connected through a connecting frame, the axis of the first gear ring is coincident with the axis of the second gear ring, the radius of the first gear ring is smaller than that of the second gear ring, and the first gear ring is higher than that of the second gear ring; a first gear is arranged on each feeding pipe, the first gear is positioned below the first gear ring and is meshed with the first gear ring, a second gear is arranged on each transmission rod, the second gear is positioned above the second gear ring and is meshed with the second gear ring, and an output shaft of the power motor is connected with the connecting frame; the first half spherical shell and the second half spherical shell are respectively provided with a first material passing net barrel and a second material passing net barrel at the mutually approaching ends, the second material passing net barrels are inserted into the first material passing net barrels, and the radial sections of the first material passing net barrels and the second material passing net barrels are regular polygons; the feeding pipe is communicated with the mixing tank through the telescopic pipe, and an adjusting air bag is arranged between the mixing tank and the feeding pipe.
2. The ultra-high pressure ceramic dielectric material production system of claim 1, wherein: the cooling unit comprises a plurality of cooling pipes uniformly distributed in the inner grinding shell, a cooling medium inlet channel and a cooling medium return channel are formed in the transmission rod, two ends of each cooling pipe are respectively communicated with the cooling medium inlet channel and the cooling medium return channel, a first adapter is rotatably installed on the transmission rod, and the cooling medium inlet channel and the cooling medium return channel are respectively communicated with the refrigerator through the first adapter.
3. The ultra-high pressure ceramic dielectric material production system of claim 1, wherein: the conveying unit comprises a first spiral blade which is arranged at the lower part of the stirring installation rod, a discharge cylinder is arranged at the lower end of the heating kettle, and the first spiral blade is positioned in the discharge cylinder; and a vacuumizing joint is arranged at the upper part of the heating kettle.
4. The ultra-high pressure ceramic dielectric material production system of claim 1, wherein: the secondary heating mechanism comprises a guide cylinder coaxially arranged at the center of the high-temperature heating tank, a driving rod stretches into the guide cylinder along the axis of the guide cylinder, a second helical blade is constructed on the driving rod, the lower end of the driving rod extends out of the lower end of the guide cylinder, a grinding body is connected with the lower end of the driving rod, a grinding hopper with a downward caliber gradually reduced along the axis of the grinding body is constructed at the lower part of the high-temperature heating tank, a grinding gap is formed between the grinding body and the grinding hopper, and a discharging pipe is constructed at the lower end of the grinding hopper; the upper end of the grinding body is connected with a material conveying rotary drum, the upper end of the material conveying rotary drum is lower than the upper end of the high-temperature heating tank, the material conveying rotary drum is positioned between the material guiding drum and the high-temperature heating tank, an inner spiral blade and an outer spiral blade are respectively constructed on the inner wall and the outer wall of the material conveying rotary drum, and the inner spiral blade and the outer spiral blade extend to the two ends of the material conveying rotary drum along the axis of the material conveying rotary drum; a first electric heating wire extending spirally is constructed in the peripheral wall of the guide cylinder, and a second electric heating wire extending spirally is constructed outside the peripheral wall of the high-temperature heating tank.
5. A production method based on the ultra-high pressure ceramic dielectric material production system according to any one of claims 1 to 4, characterized by comprising the steps of:
s1, starting a power motor and a forward and backward rotating motor to enable the power motor and the forward and backward rotating motor to operate;
s2, the raw materials pass through a mixing tank and are mixed, and the mixed raw materials are uniformly distributed into each cold grinding mechanism;
s3, grinding the raw materials entering the cold grinding mechanism, and refrigerating the raw materials in the grinding process, so that the temperature in the cold grinding mechanism is between-70 ℃ and-65 ℃;
s4, enabling the powder subjected to cold grinding to enter a first-stage heating mechanism for preheating, so that the temperature of the powder is gradually increased until the temperature reaches 300-340 ℃;
s5, the preheated powder enters a secondary heating mechanism and is gradually heated, so that the temperature of the powder reaches 1000-1200 ℃;
and S6, finally, discharging the high-temperature powder by a secondary heating mechanism.
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