CN211177848U - Drying system of carborundum powder - Google Patents
Drying system of carborundum powder Download PDFInfo
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- CN211177848U CN211177848U CN201921499148.9U CN201921499148U CN211177848U CN 211177848 U CN211177848 U CN 211177848U CN 201921499148 U CN201921499148 U CN 201921499148U CN 211177848 U CN211177848 U CN 211177848U
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Abstract
A drying system for silicon carbide powder relates to the technical field of silicon carbide powder production, and comprises a vertically arranged drying cylinder, wherein the lower part of the drying cylinder is provided with a stirring chamber, the side wall of the stirring chamber is provided with a hot air inlet, the hot air inlet is connected with a tangential air inlet channel, and the front end of the tangential air inlet channel is connected with a hot air mechanism for supplying hot air to the drying cylinder; a stirrer is arranged in the stirring chamber, a powder ascending channel is arranged in the drying cylinder above the stirring chamber, a wet material feeding port is arranged at the butt joint position between the powder ascending channel and the stirring chamber, the wet material feeding port is connected with a feeding mechanism, and a temperature measuring point is arranged on the powder ascending channel above the wet material feeding port; the upper part of the powder material ascending channel is provided with a dry material discharge port which is connected with a powder material separating system through a discharge pipeline; and a draught fan is arranged on a tail gas discharge pipe of the powder separation system. The utility model has the characteristics of dry evenly thoroughly, it is extravagant to reduce the material, reduce cost reduces air pollution.
Description
Technical Field
The utility model belongs to the technical field of the production technique of carborundum powder and specifically relates to a drying system of carborundum powder.
Background
Silicon carbide has many other uses besides being used as an abrasive material due to its stable chemical properties, high thermal conductivity, small thermal expansion coefficient and good wear resistance. The industrial production method of silicon carbide is to refine high-quality quartz sand and petroleum coke in a resistance furnace. Pure silicon carbide is colorless, while brown to black in industrial production is produced by crushing, acid-base washing, magnetic separation and sieving or water separation of silicon carbide blocks obtained from iron-containing impurities.
Because silicon carbide often contains impurities such as iron, the silicon carbide needs to be purified and classified, the silicon carbide is firstly prepared into slurry, then the slurry is subjected to impurity removal, iron removal and classification, and then the silicon carbide powder with various particle sizes is obtained through separation and drying. The stoving of carborundum among the prior art is exactly gone on in the drying furnace, but often appears drying inhomogeneous, and the carborundum powder of stoving is inside moist, and drying quality is poor, and leads to carborundum powder to embrace the group easily and block up, causes the shut down, influences work efficiency, leads to the material extravagant again to, the air after the tradition is dried has the dust, directly discharges or discharges after removing dust, and it is not thorough to remove dust, causes air pollution.
Disclosure of Invention
The utility model aims to solve the technical problem that not enough to provide stoving to prior art is even thorough, and convenient monitoring reduces the material extravagant, reduce cost, reduces air pollution's a drying system of carborundum powder.
The utility model aims to solve the technical problem that the drying system of the silicon carbide powder is realized by the following technical scheme, and the drying system of the silicon carbide powder is characterized by comprising a vertically arranged drying cylinder, wherein the lower part of the drying cylinder is provided with a stirring chamber, the side wall of the stirring chamber is provided with a hot air inlet, the hot air inlet is connected with a tangential air inlet channel which tangentially enters the drying cylinder, and the front end of the tangential air inlet channel is connected with a hot air mechanism which provides hot air for the drying cylinder;
a stirrer for stirring silicon carbide powder and blowing the silicon carbide powder to rise by rotary hot air entering the stirrer from a tangential air inlet channel is arranged in the stirring chamber, a powder rising channel communicated with the stirring chamber is arranged in a drying cylinder above the stirring chamber, a wet material feeding port is arranged at the butt joint part between the powder rising channel and the stirring chamber, the wet material feeding port is connected with a feeding mechanism for feeding the stirring chamber, and a temperature measuring point for monitoring whether the silicon carbide powder is dried or not through temperature is arranged on the powder rising channel above the wet material feeding port;
the upper part of the powder ascending channel is provided with a dry material discharge port, and the dry material discharge port is connected with a powder separation system for separating and collecting dried silicon carbide powder through a discharge pipeline; and a draught fan is arranged on a tail gas discharge pipe of the powder separation system.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the hot air mechanism comprises an air inlet channel heating inner container and a heat preservation shell outside the air inlet channel heating inner container, and a heater is arranged at the front end of the air inlet channel heating inner container; a cold air inlet is formed in the side wall of the heat insulation shell close to the heater, and spiral guide fins fixedly mounted on the outer wall of the heating inner container of the air inlet channel are arranged between the outer wall of the heating inner container of the air inlet channel and the inner wall of the heat insulation shell.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the feeding mechanism comprises a feed hopper, a stirrer is arranged in the feed hopper, a spiral conveyor is arranged below the feed hopper, and a wet material discharge port of the spiral conveyor is in butt joint with a wet material feed port of the drying cylinder.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: and a heat-insulating layer is arranged outside the stirring chamber.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the stirrer comprises a rotatable stirring shaft which is vertically arranged, a plurality of stirring blades are circumferentially arranged on the stirring shaft, and the stirring blades are triangular blades which are small in top and large in bottom.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the distance between the temperature measuring point and the feed inlet is 500-700 mm.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the powder separation system comprises a cyclone separator and a cloth bag separator.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the cyclone separator comprises a football-shaped cylinder body, a powder inlet enabling powder to tangentially enter an inner cavity of the cylinder body is formed in the side wall of the upper portion of the cylinder body, the powder inlet is in butt joint with a dry material discharge hole of the drying cylinder, and a cyclone separation air outlet connected with a cloth bag separation air inlet of the cloth bag separator is formed in the upper portion of the cylinder body; a material collecting port is arranged below the barrel body, and a valve is arranged on the material collecting port.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: the bag-type dust collector comprises a box body, wherein an air collection chamber is arranged at the upper part in the box body, a bag separation air outlet is arranged at the upper part of the air collection chamber and is connected with a tail gas discharge pipe, a separation chamber is arranged below the air collection chamber, a bag separation air inlet is arranged at the lower part of the separation chamber and is connected with a cyclone separation air outlet through a pipeline, a feed opening is arranged below the separation chamber, and a valve is arranged on the feed opening;
a separating pore plate is arranged between the gas collection chamber and the separation chamber, a plurality of gas holes are arranged on the separating pore plate, a plurality of framework type cloth bags which are vertically arranged and correspond to the gas holes one by one are arranged in the separation chamber, and the framework type cloth bags are fixedly arranged on the separating pore plate;
the outer side wall of the box body is provided with a pulse back-blowing system, the pulse back-blowing system comprises pulse back-blowing air distribution branch pipes and an air distribution main pipe which are in one-to-one correspondence with the framework type cloth bags, the outer ends of the pulse back-blowing air distribution branch pipes are connected with the air distribution main pipe through pulse valves, the inner ends of the pulse back-blowing air distribution branch pipes penetrate through the air collection chamber and extend into the framework type cloth bags, and the end parts of the pulse back-blowing air distribution branch pipes in the framework type cloth bags are connected with back-blowing compressed air nozzles; and a powder falling channel is formed in a gap between the inner wall of the box body and the outer surface of the framework type cloth bag.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, above the drying system of carborundum powder in: an air inlet baffle plate which guides air inlet downwards is arranged in the separation chamber and is close to the bag separation air inlet.
Compared with the prior art, the beneficial effects of the utility model are that:
the drying cylinder is matched with the hot air supply mechanism, so that the silicon carbide powder is heated and dried, the stirrer is arranged in the drying cylinder, the silicon carbide powder is stirred up and is driven by hot air to rotate and rise, the silicon carbide powder is dried uniformly and thoroughly, the temperature measuring point is arranged on the powder rising channel, whether the silicon carbide powder is dried or not can be accurately monitored, the drying quality is good, the discharging is smooth, and the material waste is reduced; in addition, the air after the tradition is dried has the dust, directly discharges or discharges after removing dust, the utility model discloses connect powder piece-rate system behind the section of thick bamboo of drying, realize separating and collecting the carborundum powder after the stoving with hot-blast, discharge after removing dust to hot-blast simultaneously, both reduced the waste of material, reduce the cost, remove dust to hot-blast again, reduce air pollution.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the internal structure of the heating furnace;
FIG. 3 is a schematic structural view of a drying drum;
FIG. 4 is a schematic diagram of the cyclone separator;
FIG. 5 is a schematic view of the cloth bag separator in an operating state;
fig. 6 is a schematic structural diagram of the bag separator in a pulse back-blowing state.
In the figure: 1. the device comprises a heater, 2 parts of a tangential air inlet channel, 21 parts of an air inlet channel heating inner container, 22 parts of a heat preservation shell, 23 parts of spiral guide fins, 24 parts of a cold air inlet, 3 parts of a drying cylinder, 31 parts of a stirring chamber, 32 parts of a stirring shaft, 33 parts of a stirring blade, 34 parts of a heat preservation layer, 4 parts of a powder ascending channel, 5 parts of a temperature measuring point, 6 parts of a cyclone separator, 61 parts of a cylinder body, 62 parts of a powder inlet, 63 parts of a cyclone separation air outlet, 7 parts of a cloth bag separator, 71 parts of a box body, 72 parts of a gas collection chamber, 73 parts of a cloth bag separation air outlet, 74 parts of a separation chamber, 75 parts of a cloth bag separation air inlet, 76 parts of a separation pore plate, 77 parts of a framework type cloth bag, 78 parts of a pulse back-blowing air distribution branch pipe, 79 parts of a pulse valve, 710 parts of an air inlet baffle, 711 parts of.
Detailed Description
The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
[ example 1 ]
Referring to fig. 1, a drying system for silicon carbide powder comprises a vertically arranged drying cylinder 3, wherein a stirring chamber 31 is arranged at the lower part of the drying cylinder 3, a hot air inlet is arranged on the side wall of the stirring chamber 31, the hot air inlet is connected with a tangential air inlet channel 2 which tangentially enters the drying cylinder 3, and the front end of the tangential air inlet channel 2 is connected with a hot air mechanism which provides hot air for the drying cylinder 3;
a stirrer for stirring silicon carbide powder to enable the silicon carbide powder to be blown and lifted by rotary hot air entering from a tangential air inlet channel is arranged in the stirring chamber 31, a powder lifting channel 4 communicated with the stirring chamber 31 is arranged in the drying cylinder 3 above the stirring chamber 31, a wet material feeding port is arranged at the butt joint position between the powder lifting channel 4 and the stirring chamber 31 and connected with a feeding mechanism for feeding the stirring chamber 31, and a temperature measuring point 5 for monitoring whether the silicon carbide powder is dried or not through temperature is arranged on the powder lifting channel 4 above the wet material feeding port;
the upper part of the powder ascending channel 4 is provided with a dry material discharge port, and the dry material discharge port is connected with a powder separation system for separating and collecting dried silicon carbide powder through a discharge pipeline 8; and a draught fan 10 is arranged on a tail gas discharge pipe 9 of the powder separation system.
Referring to fig. 2, the hot air mechanism comprises an air inlet channel heating inner container 21 and a heat preservation shell 22 outside the inner container, and a heater 1 is arranged at the front end of the air inlet channel heating inner container 21; a cold air inlet 24 is formed in the side wall of a heat preservation shell 22 close to a heater 1, a spiral flow guide fin 23 fixedly installed on the outer wall of a heating inner container 21 of an air inlet channel is arranged between the outer wall of the heating inner container 21 of the air inlet channel and the inner wall of the heat preservation shell 22, cold air enters from the cold air inlet and is heated by the heater 1 to form hot air, the hot air is guided by the spiral flow guide fin 23 to form hot air whirlwind, the hot air enters into a stirring chamber 31 through a tangential air inlet channel 2, and wet silicon carbide powder fed into the stirring chamber 31 from a feeding mechanism is heated and dried.
The feeding mechanism comprises a feed hopper 11, a stirrer is arranged in the feed hopper 11, a spiral conveyor 12 is arranged below the feed hopper 11, and a wet material discharge hole of the spiral conveyor 12 is in butt joint with a wet material feed hole of the drying cylinder 3.
Referring to fig. 3, an insulating layer 34 is provided outside the stirring chamber 31.
The agitator includes the rotatable (mixing) shaft 32 of vertical setting, be equipped with 4 stirring blade 33 on the circumference of (mixing) shaft 32, stirring blade 33 is big end down's triangle-shaped blade, just stirs and disperses the carborundum powder of the subsidence teeter chamber 31 bottom of bottom, drives rotatoryly by the hot-blast that sends into from hot-blast mechanism, makes it obtain abundant heating and drying, improves oven-dry mass.
The distance from the temperature measuring point 5 to the feeding hole is 600mm, the drying degree of the silicon carbide powder in the drying cylinder 3 is monitored by the temperature measuring point 5, and when the temperature at the temperature measuring point 5 reaches the specified temperature, the silicon carbide powder in the drying cylinder is thoroughly dried, and the discharging is smooth.
The powder separation system comprises a cyclone separator 6 and a cloth bag separator 7.
Referring to fig. 4, the cyclone separator 6 includes a football-shaped cylinder 61, a powder inlet 62 for allowing powder to tangentially enter an inner cavity of the cylinder 61 is formed in a side wall of an upper portion of the cylinder 61, the powder inlet 62 is in butt joint with a dry material discharge port of the drying cylinder 3, and a cyclone separation air outlet 63 connected with a cloth bag separation air inlet 75 of the cloth bag separator 7 is formed in the upper portion of the cylinder 61; a material collecting port is arranged below the cylinder body 61, and a valve is arranged on the material collecting port.
Referring to fig. 5 and fig. 6, the bag-type dust collector includes a box 71, an air collection chamber 72 is disposed at an upper portion of the box 71, a bag separation air outlet 73 is disposed at an upper portion of the air collection chamber 72, the bag separation air outlet 73 is connected to the tail gas discharge pipe 9, a separation chamber 74 is disposed below the air collection chamber 72, a bag separation air inlet 75 is disposed at a lower portion of the separation chamber 74, the bag separation air inlet 75 is connected to the cyclone separation air outlet 63 through a pipeline, a feed opening is disposed below the separation chamber 74, and a valve is mounted on the feed opening;
a separating pore plate 76 is arranged between the gas collection chamber 72 and the separating chamber 74, 10 air holes are arranged on the separating pore plate 76, 10 framework type cloth bags 77 which are vertically arranged and correspond to the air holes one by one are arranged in the separating chamber 74, and the framework type cloth bags 77 are fixedly arranged on the separating pore plate 76;
a pulse back-blowing system is arranged on the outer side wall of the box body 71, the pulse back-blowing system comprises pulse back-blowing air distribution branch pipes 78 and a pulse back-blowing air distribution main pipe 711 which are in one-to-one correspondence with the framework-type cloth bags 77, the outer ends of the pulse back-blowing air distribution branch pipes 78 are connected with the pulse back-blowing air distribution main pipe 711 through pulse valves 79, the inner ends of the pulse back-blowing air distribution branch pipes 78 penetrate through the air collection chamber 72 and extend into the framework-type cloth bags 77, and back-blowing compressed air nozzles are connected to the end portions of the pulse back-blowing air distribution branch pipes 78 in the framework; and a powder falling channel is formed in a gap between the inner wall of the box body 71 and the outer surface of the framework type cloth bag 77.
An air inlet baffle 710 for guiding the inlet air downwards is arranged in the separation chamber 74 and close to the cloth bag separation air inlet 75.
When the device works, materials are put into a feed hopper 11, are conveyed to a stirring chamber 31 in a drying cylinder 3 through a screw conveyor 12, are stirred and rotated by a stirrer, are heated and dried after being fully contacted with rotary hot air fed from a tangential air inlet channel 2, are driven by the rotary hot air to move upwards to a powder material ascending channel 4, are conveyed into a cyclone separator 6 from a discharge pipeline 8, and the hot air carrying silicon carbide powder enters the cyclone separator 6 from tangential rotation; the rotary hot air of the residual part of dust rises, is discharged from the cyclone separation air outlet 63, enters a separation chamber 74 in the cloth bag separator 7 from a cloth bag separation air inlet 75, enters a skeleton-type cloth bag 77, the silicon carbide powder falls or is attached to the outer surface of the skeleton-type cloth bag 77 after being isolated by the skeleton-type cloth bag 77, the hot air after secondary separation enters a gas collection chamber 72, and is discharged to the atmosphere from a cloth bag separation air outlet 73 of the gas collection chamber 72 under the suction action of a draught fan 10; the silicon carbide powder attached to the outer surface of the framework type cloth bag 77 is opened by a pulse valve 79, compressed air is input to the pulse back-blowing air distribution branch pipe 78 through a pulse back-blowing air distribution main pipe 711, and is pulse-blown up to the interior of the framework type cloth bag 77 through a back-blowing compressed air nozzle, so that the framework type cloth bag 77 is blown up and vibrates, the silicon carbide powder attached to the outer surface of the framework type cloth bag 77 is shaken off, the silicon carbide powder subjected to secondary separation is discharged to a discharging opening, and the dried silicon carbide powder can be collected by opening a valve.
Claims (10)
1. The utility model provides a drying system of carborundum powder which characterized in that: the drying device comprises a vertically arranged drying cylinder, wherein a stirring chamber is arranged at the lower part of the drying cylinder, a hot air inlet is arranged on the side wall of the stirring chamber, the hot air inlet is connected with a tangential air inlet channel which tangentially enters the drying cylinder, and the front end of the tangential air inlet channel is connected with a hot air mechanism which supplies hot air to the drying cylinder;
a stirrer for stirring silicon carbide powder and blowing the silicon carbide powder to rise by rotary hot air entering the stirrer from a tangential air inlet channel is arranged in the stirring chamber, a powder rising channel communicated with the stirring chamber is arranged in a drying cylinder above the stirring chamber, a wet material feeding port is arranged at the butt joint part between the powder rising channel and the stirring chamber, the wet material feeding port is connected with a feeding mechanism for feeding the stirring chamber, and a temperature measuring point for monitoring whether the silicon carbide powder is dried or not through temperature is arranged on the powder rising channel above the wet material feeding port;
the upper part of the powder ascending channel is provided with a dry material discharge port, and the dry material discharge port is connected with a powder separation system for separating and collecting dried silicon carbide powder through a discharge pipeline; and a draught fan is arranged on a tail gas discharge pipe of the powder separation system.
2. The silicon carbide powder drying system according to claim 1, wherein: the hot air mechanism comprises an air inlet channel heating inner container and a heat preservation shell outside the air inlet channel heating inner container, and a heater is arranged at the front end of the air inlet channel heating inner container; a cold air inlet is formed in the side wall of the heat insulation shell close to the heater, and spiral guide fins fixedly mounted on the outer wall of the heating inner container of the air inlet channel are arranged between the outer wall of the heating inner container of the air inlet channel and the inner wall of the heat insulation shell.
3. The silicon carbide powder drying system according to claim 1, wherein: the feeding mechanism comprises a feed hopper, a stirrer is arranged in the feed hopper, a spiral conveyor is arranged below the feed hopper, and a wet material discharge port of the spiral conveyor is in butt joint with a wet material feed port of the drying cylinder.
4. The silicon carbide powder drying system according to claim 1, wherein: and a heat-insulating layer is arranged outside the stirring chamber.
5. The silicon carbide powder drying system according to claim 1, wherein: the stirrer comprises a rotatable stirring shaft which is vertically arranged, a plurality of stirring blades are circumferentially arranged on the stirring shaft, and the stirring blades are triangular blades which are small in top and large in bottom.
6. The silicon carbide powder drying system according to claim 1, wherein: the distance between the temperature measuring point and the feed inlet is 500-700 mm.
7. The silicon carbide powder drying system according to claim 1, wherein: the powder separation system comprises a cyclone separator and a cloth bag separator.
8. The silicon carbide powder drying system according to claim 7, wherein: the cyclone separator comprises a football-shaped cylinder body, a powder inlet enabling powder to tangentially enter an inner cavity of the cylinder body is formed in the side wall of the upper portion of the cylinder body, the powder inlet is in butt joint with a dry material discharge hole of the drying cylinder, and a cyclone separation air outlet connected with a cloth bag separation air inlet of the cloth bag separator is formed in the upper portion of the cylinder body; a material collecting port is arranged below the barrel body, and a valve is arranged on the material collecting port.
9. The silicon carbide powder drying system according to claim 7, wherein: the bag-type dust collector comprises a box body, wherein an air collection chamber is arranged at the upper part in the box body, a bag separation air outlet is arranged at the upper part of the air collection chamber and is connected with a tail gas discharge pipe, a separation chamber is arranged below the air collection chamber, a bag separation air inlet is arranged at the lower part of the separation chamber and is connected with a cyclone separation air outlet through a pipeline, a feed opening is arranged below the separation chamber, and a valve is arranged on the feed opening;
a separating pore plate is arranged between the gas collection chamber and the separation chamber, a plurality of gas holes are arranged on the separating pore plate, a plurality of framework type cloth bags which are vertically arranged and correspond to the gas holes one by one are arranged in the separation chamber, and the framework type cloth bags are fixedly arranged on the separating pore plate;
the outer side wall of the box body is provided with a pulse back-blowing system, the pulse back-blowing system comprises pulse back-blowing air distribution branch pipes and an air distribution main pipe which are in one-to-one correspondence with the framework type cloth bags, the outer ends of the pulse back-blowing air distribution branch pipes are connected with the air distribution main pipe through pulse valves, the inner ends of the pulse back-blowing air distribution branch pipes penetrate through the air collection chamber and extend into the framework type cloth bags, and the end parts of the pulse back-blowing air distribution branch pipes in the framework type cloth bags are connected with back-blowing compressed air nozzles; and a powder falling channel is formed in a gap between the inner wall of the box body and the outer surface of the framework type cloth bag.
10. The silicon carbide powder drying system according to claim 9, wherein: an air inlet baffle plate which guides air inlet downwards is arranged in the separation chamber and is close to the bag separation air inlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921499148.9U CN211177848U (en) | 2019-09-10 | 2019-09-10 | Drying system of carborundum powder |
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| CN201921499148.9U CN211177848U (en) | 2019-09-10 | 2019-09-10 | Drying system of carborundum powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530142A (en) * | 2019-09-10 | 2019-12-03 | 连云港市沃鑫高新材料有限公司 | The drying system of carborundum powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530142A (en) * | 2019-09-10 | 2019-12-03 | 连云港市沃鑫高新材料有限公司 | The drying system of carborundum powder |
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