CN216522654U - Wet material drying system of cubic - Google Patents
Wet material drying system of cubic Download PDFInfo
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- CN216522654U CN216522654U CN202122493768.5U CN202122493768U CN216522654U CN 216522654 U CN216522654 U CN 216522654U CN 202122493768 U CN202122493768 U CN 202122493768U CN 216522654 U CN216522654 U CN 216522654U
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Abstract
The utility model belongs to the technical field of material drying treatment, and particularly relates to a drying system for blocky wet materials. This drying system includes through crushing device, stirring crushing and drying device and dry particle collection device in advance, and stirring crushing and drying device includes the drying chamber and sets up the broken mechanism of drying chamber bottom, dry particle collection device include with primary dust remover and secondary dust remover that the bin outlet is connected, the wet material of crushing in advance is the particle material, warp at the crushing drying of stirring crushing and drying device primary dust remover and secondary dust remover collect the dry particle. According to the system, the filter cake-shaped wet materials are pre-crushed, the crushing effect of the crushing mechanism is combined, the materials are thoroughly crushed and dried, and the materials with remarkably reduced moisture can be obtained after being collected by the dry particle collecting device. The drying system can be used for drying basic magnesium carbonate filter cakes, and the moisture of the dried materials can be reduced to below 1%.
Description
Technical Field
The utility model belongs to the technical field of material drying treatment, and particularly relates to a drying system for blocky wet materials.
Background
Basic magnesium carbonate with a molecular formula of 4MgCO3·Mg(OH)2·5H2O, as a white, loose powder or as a light, brittle substance, with a density of 2.16g/mL at 20 ℃. Basic magnesium carbonate is practically insoluble in water, but causes a slightly exothermic alkaline reaction in water; insoluble in ethanol, soluble in dilute acid and foamable; will not decompose under normal conditions. The prior process flow for drying basic magnesium carbonate generally comprises the steps of filtering a filter cake by a filter press, and then drying to obtain a product. However, the basic magnesium carbonate material pressed and filtered by the filter press is in a large filter cake shape, the filter cake is hard, and the viscosity is large after the filter cake is crushed, so that the basic magnesium carbonate material is difficult to be fully dried, and the material dried by the traditional method still contains about 45 percent of free water, so that the drying requirement of the basic magnesium carbonate product is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a drying system for a blocky wet material, and aims to solve the problem that a basic magnesium carbonate filter cake is difficult to sufficiently dry at present.
In order to achieve the purpose, the utility model adopts the technical scheme that: providing a blocky wet material drying system, which comprises a pre-crushing device, a stirring, crushing and drying device and a dry particle collecting device which are sequentially arranged according to the material transmission direction;
the stirring, crushing and drying device comprises a drying chamber and a crushing mechanism arranged at the bottom of the drying chamber, wherein a pre-crushing material inlet communicated with a discharge port of the pre-crushing device and an air inlet used for introducing hot air are formed in the side wall of the lower part of the drying chamber, and a dry particle material discharge port is formed in the upper part of the drying chamber;
the dry particle collecting device comprises a primary dust remover and a secondary dust remover which are connected with the dry particle material discharge port;
and the pre-crushed wet material is crushed into dry particle materials in the stirring, crushing and drying device, and the dry particles are collected by the primary dust remover and the secondary dust remover.
In one embodiment, the bulk wet material drying system further comprises a hot air system, and the air inlet is communicated with the hot air system through an air inlet pipe;
the hot air system comprises an air blowing device, a tail gas preheater and a gas heating device which are communicated through a gas transmission pipeline; a heat exchange tube is arranged in the tail gas preheater;
and the secondary dust remover is provided with an air inducing device, an air inlet of the air inducing device is communicated with an air outlet of the secondary dust remover, and an air outlet of the air inducing device is communicated with the heat exchange tube.
Optionally, a temperature monitoring device is arranged on a gas transmission pipeline between the air blowing device and the tail gas preheater.
Optionally, the gas heating device is provided with a temperature monitoring device.
Optionally, the air inlet pipeline and the air outlet pipeline of the heat exchange pipe are both provided with a temperature monitoring device.
Optionally, the gas heating device is a direct fired hot blast stove.
In one embodiment, the main body structure of the drying chamber is cylindrical, the air inlet direction of the air inlet is the tangential direction of the drying chamber, and the material crushed into particles spirally rises in the drying chamber.
In one embodiment, a pre-crushing material conveying device is connected between the discharge port of the pre-crushing device and the pre-crushing material inlet of the stirring, crushing and drying device, and comprises a spiral feeder and a spiral conveyer.
Optionally, the pre-crushing device is a double-blade pre-crusher for crushing the massive wet material into pre-crushed blocks with a particle size of less than 2 cm.
In one embodiment, the primary dust remover is a cyclone dust remover connected with the dry particulate material discharge port, and the secondary dust remover is a pulse bag dust remover connected with the air outlet of the cyclone dust remover.
Optionally, a temperature monitoring device is arranged on a feed pipeline of the pulse bag type dust collector.
Optionally, the feed inlet and the discharge outlet of the pulse bag type dust collector are both provided with a pressure monitoring device.
Optionally, a pressure monitoring device is arranged on a compressed air inlet pipeline of the pulse bag type dust collector.
In one embodiment, the air inlet of the stirring, crushing and drying device is provided with a temperature monitoring device.
In one embodiment, the dry particulate material discharge opening of the stirring, crushing and drying device is provided with a temperature monitoring device.
In one embodiment, a pressure monitoring device is arranged on an air outlet pipeline of the hot air system.
In one embodiment, the dry particulate material discharge is provided with a pressure monitoring device.
The drying system for the blocky wet materials provided by the utility model has the beneficial effects that: according to the utility model, firstly, the filter cake-shaped wet material is pre-crushed by the pre-crushing device, so that the size of the wet material is reduced, the wet material is convenient to convey, and the pre-crushed material is dried in the stirring, crushing and drying device, so that the crushing load of the stirring, crushing and drying device can be reduced, and the service life of the crushing mechanism is prolonged; the pre-crushed materials are fully crushed and dried in the stirring, crushing and drying device under the drying action of hot air and the scattering action of the crushing mechanism, the moisture of the materials is greatly reduced, and the obtained dry particles are collected in the primary dust remover and the secondary dust remover, so that a dry product can be obtained. The drying system can be used for drying filter cake-shaped wet materials of basic magnesium carbonate, the moisture can be reduced to below 1 percent, and the drying requirement of the basic magnesium carbonate can be basically met.
Drawings
Fig. 1 is a schematic overall structure and flow diagram of an embodiment of the present invention.
In the figure:
1. a pre-crushing device;
2. a pre-crushing material conveying device;
3. a stirring, crushing and drying device;
31. a drying chamber; 32. a crushing mechanism; 33. a pre-crushing material inlet; 34. an air inlet; 35. a dry particulate material discharge outlet;
41. a primary dust remover; 42. a secondary dust remover; 43. an air inducing device;
51. an air blowing device; 52. a tail gas preheater; 53. a gas heating device; 521. a heat exchange tube.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, a block-shaped wet material drying system according to the present invention will now be described. The drying system comprises a pre-crushing device 1, a stirring, crushing and drying device 3 and a dry particle collecting device which are sequentially arranged according to the material conveying direction;
the stirring, crushing and drying device 3 comprises a drying chamber 31 and a crushing mechanism 32 arranged at the bottom of the drying chamber 31, wherein a pre-crushing material inlet 33 communicated with a discharge port of the pre-crushing device 1 and an air inlet 34 used for introducing hot air are arranged on the side wall of the lower part of the drying chamber 31, and a dry particulate material discharge port 35 is arranged at the upper part of the drying chamber 31;
the dry particle collecting device comprises a primary dust remover 41 and a secondary dust remover 42 which are connected with the dry particle material discharge port 35;
wherein, the wet material which is pre-crushed is crushed into dry particle material in the stirring, crushing and drying device 3, and the dry particles are collected by the primary dust remover 41 and the secondary dust remover 42.
The drying system for the blocky wet materials provided by the utility model has the beneficial effects that: according to the utility model, firstly, the pre-crushing device 1 is used for pre-crushing the filter cake-shaped wet material, so that the size of the wet material is reduced, the wet material is convenient to convey, the pre-crushed material is dried in the stirring, crushing and drying device 3, the crushing load of the stirring, crushing and drying device 3 can be reduced, and the service life of the crushing mechanism 32 is prolonged; the pre-crushed material is fully crushed and dried in the stirring, crushing and drying device 3 by the drying action of the hot air and the scattering action of the crushing mechanism 32, the moisture of the material is greatly reduced, and the obtained dry particles are collected in the primary dust remover 41 and the secondary dust remover 42, so that a dry product can be obtained. The drying system can be used for drying filter cake-shaped wet materials of basic magnesium carbonate, the moisture can be reduced to below 1 percent, and the drying requirement of the basic magnesium carbonate can be basically met.
As a specific embodiment provided by the bulk wet material drying system of the present invention, the bulk wet material drying system further includes a hot air system, and the air inlet 34 is communicated with the hot air system through an air inlet pipe; the hot air system comprises an air blowing device 51, a tail gas preheater 52 and a gas heating device 53 which are communicated through a gas transmission pipeline; a heat exchange pipe 521 is arranged in the tail gas preheater 52; the secondary dust remover 42 is provided with an induced draft device 43, the air inlet of the induced draft device 43 is communicated with the air outlet of the secondary dust remover 42, and the air outlet of the induced draft device 43 is communicated with the heat exchange pipe 521. The tail gas discharged by the air inducing device 43 contains heat generated in the drying process of the blocky wet materials, and after the tail gas is introduced into the heat exchange tube 521 of the tail gas preheater 52, on one hand, the heat of the tail gas is utilized to preheat cold air input by the air blowing device 51, so that the energy of the tail gas can be fully utilized, the energy consumption of a system is reduced, on the other hand, the temperature of the tail gas discharged from the air can be reduced, and the environmental load is reduced; the preheated cold air enters the air heating device 53 for further heating, and then is input into the stirring, crushing and drying device 3 through the air inlet 34 through the air inlet pipe for drying the materials.
In addition to the above embodiments, a temperature monitoring device is provided in the gas transmission pipeline between the air blowing device 51 and the tail gas preheater 52. The air inlet temperature is monitored; the gas heating device 53 may also be provided with a temperature monitoring device for monitoring the temperature of the inlet air after heat exchange, judging whether the heat exchange is normal or not, and monitoring the heat exchange effect. The inlet duct and the outlet duct of the heat exchange pipe 521 can be provided with temperature monitoring devices, the temperature monitoring device at the air inlet is used for monitoring the temperature before heat exchange of tail gas, the temperature monitoring device at the air outlet is used for monitoring the temperature after heat exchange of tail gas, and the two temperatures can monitor the heat exchange effect before and after heat exchange.
On the basis of the above embodiment, the gas heating device 53 is a direct-fired hot-blast stove, and can directly mix the air preheated by the tail gas preheater 52 with the high-temperature air generated by combustion, so that the thermal efficiency is high.
As a specific embodiment of the drying system for block-shaped wet materials of the present invention, the main structure of the drying chamber 31 is cylindrical-like, and the air inlet direction of the air inlet 34 is the tangential direction of the drying chamber 31, so that the material pulverized into particles spirally rises in the drying chamber 31. The vortex-type rotating airflow formed by the hot air input along the tangential direction in the drying chamber 31 is combined with the scattering effect of the crushing paddle on the materials, so that the pre-crushed materials can be fully crushed and dried, and the moisture content is remarkably reduced.
As a specific embodiment provided by the drying system for wet bulk materials of the present invention, a pre-crushing material feeding device 2 is connected between the discharge port of the pre-crushing device 1 and the pre-crushing material inlet 33 of the stirring, crushing and drying device 3, and the pre-crushing material feeding device 2 includes a screw feeder and a screw conveyor. The spiral feeder and the spiral conveyor can control the amount of the material input into the stirring, crushing and drying device 3, so that the amount of the material in the stirring, crushing and drying device 3 is moderate, and the material can be effectively and efficiently dried.
On the basis of the above embodiment, the pre-crushing device 1 is a double-blade pre-crusher for crushing the lumpy wet material into pre-crushed material pieces having a particle size of less than 2 cm. The double-blade pre-crusher is suitable for crushing wet materials including basic magnesium carbonate filter cake-shaped wet materials, and cannot be crushed due to high viscosity of the materials.
As a specific embodiment provided by the drying system for wet bulk materials of the present invention, the primary dust collector 41 is a cyclone dust collector connected to the discharge port 35 for dry particulate materials, and the secondary dust collector 42 is a pulse bag type dust collector connected to the air outlet of the cyclone dust collector. The air outlet of the pulse bag type dust collector is communicated with the air inlet of the air inducing device 43. The cyclone dust collector and the pulse bag type dust collector are jointly used, so that the dust collection efficiency is high, and the environmental protection effect is good. The materials dried by the drying device can be dried for the second time in the rotary dust collector, most of the dried materials are collected after being guided out from the material leakage opening, the small parts of the dried materials enter the pulse bag type dust collector along with the gas, the pulse bag type dust collector collects and dries the dust entering the equipment along with the gas again, and the dried materials are collected after being guided out from the material leakage opening. The moisture in the dried product can be further reduced by dust collection and re-drying by the cyclone and pulse bag type dust collectors. The air outlet of the pulse bag type dust collector is communicated with the air inlet of the air inducing device 43, and the air in the pulse bag type dust collector is guided into the heat exchange pipe 521 of the tail gas preheater 52 through the air inducing device 43 and is used for preheating cold air.
On the basis of the above embodiment, a temperature monitoring device is arranged on a feeding pipeline of the pulse bag type dust collector to monitor the temperature of materials and gas entering the pulse bag type dust collector, so that the filter bag is prevented from being damaged by overhigh temperature.
On the basis of the above embodiment, the feed inlet and the discharge outlet of the pulse bag type dust collector are both provided with pressure monitoring devices for monitoring whether the gas flow is normal or not. Under the normal operation condition, the pressure monitoring device is required to be negative pressure, and the pressure monitored by the pressure monitoring device at the discharge port is required to be lower than the pressure monitored by the pressure monitoring device at the feed port.
In addition to the above embodiments, the compressed air intake duct of the pulse bag dust collector is provided with a pressure monitoring device for monitoring whether the compressed air supplied to the pulse bag dust collector is normally supplied.
As a specific embodiment provided by the block-shaped wet material drying system of the present invention, the air inlet 34 of the stirring, pulverizing and drying device 3 is provided with a temperature monitoring device for monitoring the temperature of the inlet air, and the operator can adjust the system capacity by the temperature, increase the temperature within the allowable range of the system temperature can increase the capacity, decrease the temperature can decrease the capacity, thereby reducing unnecessary energy waste.
As a specific embodiment provided by the block-shaped wet material drying system of the present invention, the dry particulate material discharge port 35 of the stirring, crushing and drying device 3 is provided with a temperature monitoring device for monitoring the discharge temperature of the stirring, crushing and drying device 3, thereby determining the material drying condition: the closer the discharge temperature is to the inlet 34, the less moisture the material will contain.
As a specific embodiment provided by the drying system for bulk wet materials of the present invention, a pressure monitoring device is disposed on an air outlet pipe of the hot air system, and is configured to monitor an air outlet pressure of the hot air system, where the pressure can be used to determine whether a material blockage situation occurs in the stirring, crushing and drying device 3 or the dry particle collecting device, and if the pressure monitoring device monitors that the pressure rises, the material blockage situation occurs in the stirring, crushing and drying device 3 or the dry particle collecting device.
As one embodiment provided by the drying system for wet bulk materials of the present invention, the discharge port 35 for dry particulate materials is provided with a pressure monitoring device for monitoring whether the gas flow is normal or not. In normal production conditions, the pressure monitored by the pressure monitoring device should be negative.
The technical problem to be solved by the utility model is solved by adopting the following operation flows:
starting an air blowing device 51 in a hot air system and an induced air device 43 of a dry particle collecting device to form negative pressure in the stirring, crushing and drying device 3, the primary dust remover 41 and the secondary dust remover 42; starting the gas heating device 53 to make the air entering the stirring, crushing and drying device 3 be hot air; starting each temperature monitoring device and each pressure monitoring device on the drying system to monitor the temperature and the pressure in real time;
the filter cake-shaped wet material is placed in a pre-crushing device 1 for pre-crushing to reduce the volume, then the crushed material is quantitatively conveyed into a stirring, crushing and drying device 3 through a pre-crushing material conveying device 2, hot air is input into a drying chamber 31 of the stirring, crushing and drying device 3 along the tangential direction through an air inlet 34, meanwhile, a crushing mechanism 32 is started, vortex-type rotating airflow formed by the hot air in the drying chamber 31 is combined with the crushing action of the crushing mechanism 32 on the material, so that the material is rotated along with the hot air in the drying chamber 31 and is continuously crushed and dried in the rotating process, small particle materials rise along with the vortex-type rotating airflow formed by the hot air, are extracted through a dry particle material discharging port 35 and enter a primary dust remover 41 for collection and secondary drying, most of the dry material is collected after being led out from a material leaking port, and a small part of the dry material enters a secondary dust remover 42 along with the gas, the secondary dust remover 42 collects and re-dries dust entering the equipment along with the gas, and the dried material is collected after being led out from the leakage opening; the dried material collected by the primary dust collector 41 and the secondary dust collector 42 is a dried product;
the exhaust gas generated in the secondary dust collector 42 is introduced into the heat exchange pipe 521 of the exhaust gas preheater 52 through the air inducing device 43, the heat of the exhaust gas is used to preheat the cold air blown in by the air blowing device 51, the heat is exchanged, the air is discharged into the atmosphere, and the preheated air enters the air heating device 53 to be further heated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A wet material drying system of cubic which characterized in that: comprises a pre-crushing device, a stirring, crushing and drying device and a dry particle collecting device which are arranged in sequence according to the material conveying direction;
the stirring, crushing and drying device comprises a drying chamber and a crushing mechanism arranged at the bottom of the drying chamber, wherein a pre-crushing material inlet communicated with a discharge port of the pre-crushing device and an air inlet used for introducing hot air are formed in the side wall of the lower part of the drying chamber, and a dry particle material discharge port is formed in the upper part of the drying chamber;
the dry particle collecting device comprises a primary dust remover and a secondary dust remover which are connected with the dry particle material discharge port;
and the pre-crushed wet material is crushed and dried into dry particle material in the stirring, crushing and drying device, and the dry particles are collected by the primary dust remover and the secondary dust remover.
2. A bulk wet material drying system according to claim 1 wherein: the air inlet is communicated with the hot air system through an air inlet pipe;
the hot air system comprises an air blowing device, a tail gas preheater and a gas heating device which are communicated through a gas transmission pipeline; a heat exchange tube is arranged in the tail gas preheater;
and the secondary dust remover is provided with an air inducing device, an air inlet of the air inducing device is communicated with an air outlet of the secondary dust remover, and an air outlet of the air inducing device is communicated with the heat exchange tube.
3. A bulk wet material drying system according to claim 2 wherein: a temperature monitoring device is arranged on a gas transmission pipeline between the air blowing device and the tail gas preheater; and/or
The gas heating device is provided with a temperature monitoring device; and/or
And the air inlet pipeline and the air outlet pipeline of the heat exchange pipe are both provided with temperature monitoring devices.
4. A bulk wet material drying system according to claim 2 wherein: the gas heating device is a direct-fired hot blast stove.
5. A bulk wet material drying system according to claim 1 wherein: the pre-crushing device is characterized in that a pre-crushing material conveying device is connected between a discharge port of the pre-crushing device and a pre-crushing material inlet of the stirring, crushing and drying device, and the pre-crushing material conveying device comprises a spiral feeder and a spiral conveyor.
6. A bulk wet material drying system according to claim 5 wherein: the pre-crushing device is a double-blade pre-crusher and is used for crushing the blocky wet materials into pre-crushed material blocks with the particle size of less than 2 cm.
7. A bulk wet material drying system according to claim 1 wherein: the primary dust remover is a cyclone dust remover connected with the dry particle material discharge port, and the secondary dust remover is a pulse bag type dust remover connected with the air outlet of the cyclone dust remover.
8. A bulk wet material drying system according to claim 7 wherein: a temperature monitoring device is arranged on a feeding pipeline of the pulse bag type dust collector; and/or
The feed inlet and the discharge outlet of the pulse bag type dust collector are both provided with a pressure monitoring device; and/or
And a pressure monitoring device is arranged on a compressed air inlet pipeline of the pulse bag type dust collector.
9. A bulk wet material drying system according to claim 2 wherein: the air inlet of the stirring, crushing and drying device is provided with a temperature monitoring device; and/or
A temperature monitoring device is arranged at a dry particle material discharge port of the stirring, crushing and drying device; and/or
A pressure monitoring device is arranged on an air outlet pipeline of the hot air system; and/or
And a pressure monitoring device is arranged at the discharge port of the dry particle material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122493768.5U CN216522654U (en) | 2021-10-15 | 2021-10-15 | Wet material drying system of cubic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122493768.5U CN216522654U (en) | 2021-10-15 | 2021-10-15 | Wet material drying system of cubic |
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| Publication Number | Publication Date |
|---|---|
| CN216522654U true CN216522654U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122493768.5U Active CN216522654U (en) | 2021-10-15 | 2021-10-15 | Wet material drying system of cubic |
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| CN (1) | CN216522654U (en) |
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2021
- 2021-10-15 CN CN202122493768.5U patent/CN216522654U/en active Active
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