CN112138836A - Crushing, drying and screening integrated treatment device - Google Patents
Crushing, drying and screening integrated treatment device Download PDFInfo
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- CN112138836A CN112138836A CN202010967732.3A CN202010967732A CN112138836A CN 112138836 A CN112138836 A CN 112138836A CN 202010967732 A CN202010967732 A CN 202010967732A CN 112138836 A CN112138836 A CN 112138836A
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- drying
- crushing
- drying bed
- bed
- sieve
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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
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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
- B02C19/00—Other disintegrating devices or methods
- B02C19/16—Mills provided with vibrators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a crushing, drying and screening integrated treatment device, belongs to the technical field of low-rank coal drying and upgrading, and solves the problems that the existing upgrading device is easy to harden and generate dust due to crushing, drying and dividing. Crushing, drying and screening integrated treatment device comprises: a vibration mechanism and a drying mechanism; the drying mechanism is provided with a drying bed, and dry hot carrier gas is introduced into the drying bed; the drying bed is fixedly connected with the vibration mechanism and is driven by the vibration mechanism to vibrate; the drying bed is provided with a sieve plate, and the sieve plate is provided with sieve pores and sharp protrusions with upward pointed ends; the top of the drying bed is provided with a feed inlet, the bottom of the drying bed is provided with a discharge outlet, and materials entering the drying bed through the feed inlet can only pass through the sieve plate to reach the discharge outlet. The invention utilizes the characteristics of the grinding performance and the crushing performance of the low-rank coal in the drying process to be improved, the heating area of the lignite is increased by crushing, the mass transfer and heat transfer in the drying process are enhanced, and the energy consumption in the drying process is reduced by the mutual coupling.
Description
Technical Field
The invention relates to the technical field of low-rank coal drying and upgrading, in particular to a crushing, drying and screening integrated treatment device.
Background
At present, in the coal industry, a large-size solid raw material needs to be crushed to a required size in the traditional process of drying and upgrading low-rank coal, and the purpose of crushing is achieved in a high-speed impact mode. The high-water-content low-rank coal has poor grindability, is very easy to block screening equipment, and has high energy consumption demand.
Most of the existing low-rank coal drying and upgrading devices are implemented by separating a drying device and a crushing device, and the low-rank coal is required to be dried after being crushed and screened. Although some drying and crushing are carried out in the same device, when wet material is crushed, powder is easy to adhere to the inner wall of the crushing chamber, so that the material powder is solidified, the difficulty of material pulverization is increased, and simultaneously the material is not convenient to take out after the crushing is finished.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide an integrated crushing, drying and screening processing device, which is used to solve the problems that the existing upgrading device is easy to harden and generate dust due to crushing, drying and dividing.
The purpose of the invention is mainly realized by the following technical scheme:
in the technical scheme of the invention, the crushing, drying and screening integrated treatment device comprises: a vibration mechanism and a drying mechanism;
the drying mechanism is provided with a drying bed, and dry hot carrier gas is introduced into the drying bed; the drying bed is fixedly connected with the vibration mechanism and is driven by the vibration mechanism to vibrate;
the drying bed is provided with a sieve plate, and the sieve plate is provided with sieve pores and sharp protrusions with upward pointed ends; the top of the drying bed is provided with a feed inlet, the bottom of the drying bed is provided with a discharge outlet, and materials entering the drying bed through the feed inlet can only pass through the sieve plate to reach the discharge outlet.
In the technical scheme of the invention, the drying bed is cylindrical; the sieve plates are arranged in the drying bed from top to bottom, and the mesh aperture of the upper sieve plate is larger than that of the lower sieve plate;
the sharp bulge is a cone and/or a pyramid; on the same sieve plate, the diameter of the bottom surface of the sharp-pointed convex part is equal to the aperture of the sieve pore.
In the technical scheme of the invention, each sieve plate is detachably arranged in the drying bed through the fixed clamping groove.
In the technical scheme of the invention, the side wall of the drying bed is provided with the machine body sliding door, and the sieve plate can be replaced by the opened machine body sliding door.
In the technical scheme of the invention, the bottom of the drying bed is provided with an inclined bottom plate; a discharge hole is formed in the side wall of the bottom end of the bottom plate in the inclined direction;
the discharge port is communicated with the material collecting device.
In the technical scheme of the invention, the material collecting device is provided with an air outlet pipe, and the air outlet pipe is provided with a draught fan.
In the technical scheme of the invention, the vibration mechanism comprises a vibration generating device, and the vibration generating device is connected with the bottom of the drying bed and drives the drying bed to vibrate.
In the technical scheme of the invention, the drying bed is fixedly connected with the output end of the vibration generating device through the fixing device.
In the technical scheme of the invention, the drying mechanism also comprises a hot carrier gas generator and a hot carrier gas heater;
the hot carrier gas heater heats the superheated steam to form hot carrier gas.
In the technical scheme of the invention, hot carrier gas enters a drying bed through a gas inlet; the air inlet is arranged at the top of the drying bed.
The technical scheme of the invention can at least realize one of the following effects:
1. according to the invention, the drying and crushing processes of the material can be completed in a high-efficiency manner, the drying and crushing processes are simultaneously carried out, the additional material crushing pretreatment is not required, hot carrier gas introduced from the upper part of the drying device can fully contact the surface of the material, absorb moisture in the material and timely guide the moisture out of the crushing chamber, the grindability of the material is improved along with the continuous drying of the material, the crushing process of the material is accelerated by vibration, the crushed material is easily dried, and the drying and the grinding are mutually promoted, so that the time required by crushing and drying is reduced; the grindability and the crushability of the low-rank coal are improved in the drying process, meanwhile, the heating area of the lignite is increased by crushing, the mass transfer and the heat transfer in the drying process are enhanced, the low-rank coal and the lignite are coupled with each other, and the energy consumption in the drying process is reduced.
2. In the invention, small-particle materials fall from the sieve pores and are separated in time; the temperature of the hot carrier gas can be regulated and controlled by the superheated steam generating device, the regulation and control can be implemented according to different characteristics of the crushed materials, and the filter membrane at the hot carrier gas outlet of the system can prevent dust of the crushed materials from entering the atmosphere and polluting the environment; the bottom of the drying device is provided with a vibrator, on one hand, the vibrator is provided with a sieve plate to vibrate so as to timely sieve out material powder meeting the requirement of the particle size, and on the other hand, vibration energy brought by a vibration exciter promotes the crushing of the material.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a top view of a screen panel of an embodiment of the present invention;
fig. 3 is a side view of a screen panel of an embodiment of the present invention.
Reference numerals:
1-a heat carrier gas generator; 2-hot carrier gas heater; 3-a feed inlet; 4-an air inlet; 5-fixing the clamping groove; 6-sieve plate; 7-a vibration generating device; 8-cyclone dust removal device; 9-a draught fan; 10-a material collection device; 11-a discharge hole; 12-a fixture; 13-an air outlet pipe; 14-drying the bed; 15-sharp projections; 16-mesh.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
For convenience of description, the crushing, drying and screening integrated treatment device in the embodiment of the present invention is disposed on a horizontal plane, and the upper side in this case is the upper side in the embodiment of the present invention. In addition, when the embodiment of the present invention is actually used, the embodiment of the present invention may be disposed on a slightly inclined surface, and the inclination angle is not too large.
The invention is characterized in that the material fed into the drying bed is subjected to heat exchange and water evaporation with hot air flow in the vibration drying process, the particle surfaces of the lignite with high water content are continuously cracked in the continuous drying process, and simultaneously, the outer dry shell is continuously peeled off under the action of the vibration mechanical force, so that the heat and mass transfer rate is improved. The small particles larger than the aperture of the sieve plate are left on the sieve plate to be continuously dried, and the small particles are scattered to a lower layer vibration drying bed to be collected in a separating device. In the whole drying process, the materials are dried and crushed on each layer of vibrating sieve plate by utilizing the coupling relation between the thermal fragmentation property and the heat and mass transfer until the qualified moisture and granularity requirements are met, and then the materials are discharged by a discharger. The method adopts low-temperature drying, reduces coal quality change, has no complex transmission part, is reliable in operation, utilizes hot air flow for multiple times, has low energy consumption, and is pollution-free in closed operation.
The embodiment of the invention provides a crushing, drying and screening integrated treatment device utilizing a special screen surface, which utilizes the technical problems that the grindability and the crushability of low-rank coal are improved in the drying process, the heating area of lignite is increased by crushing, the mass transfer and heat transfer in the drying process are enhanced, the energy consumption in the drying process is reduced by the characteristic of mutual coupling, and meanwhile, fine coal powder can be separated in time to ensure the safe production.
Specifically, as shown in fig. 1, in the embodiment of the present invention, the crushing, drying and screening integrated processing apparatus includes: a vibration mechanism and a drying mechanism; the drying mechanism is provided with a drying bed 14, and dry hot carrier gas is introduced into the drying bed 14; the drying bed 14 is fixedly connected with the vibration mechanism and is driven by the vibration mechanism to vibrate; the drying bed 14 is provided with a sieve plate 6, and the sieve plate 6 is provided with sieve pores 16 and sharp convex parts 15 with upward pointed ends; the top of the drying bed 14 is provided with a feed inlet 3, the bottom is provided with a discharge outlet 11, and the material entering the drying bed 14 through the feed inlet 3 can only pass through the sieve plate 6 to reach the discharge outlet 11.
According to the embodiment of the invention, the low-rank coal is crushed by the vibrating drying bed 14, and meanwhile, high-temperature hot carrier gas is introduced into the drying bed 14 to dry the low-rank coal; the drying can make the low order coal more easily by the breakage, and the area of contact of broken low order coal and hot carrier gas is bigger, more does benefit to the drying, and the two promotes each other to improve the drying and broken sorting of low order coal.
In addition, the sharp-pointed convex part 15 of the sieve plate 6 collides with the low-rank coal when vibrating, so that the crushing of the low-rank coal can be promoted, and in the vibrating drying bed 14, the sieve plate 6 also vibrates together, so that the low-rank coal with small particles can pass through the sieve pores 16 of the sieve plate 6 more easily, and the sorting efficiency is improved.
As shown in fig. 2 and 3, in the embodiment of the present invention, the drying bed 14 has a cylindrical shape; the sieve plates 6 are arranged in the drying bed 14 from top to bottom, and the aperture of the sieve pore 16 of the sieve plate 6 on the upper layer is larger than that of the sieve pore 16 of the sieve plate 6 on the lower layer. The dry and smashed material powder can fall down along the sieve plate 6 gradually under the action of gravity and air current, the aperture of the upper sieve plate 6 is large, the aperture of the sieve pore 16 on the sieve plate 6 arranged on the drying device bottom device is the same as the smashing required particle size, namely, the material powder with the material particle size smaller than or equal to the smashing required particle size can enter the material collecting bin through the sieve pore 16, and therefore the material powder meeting the particle size requirement can be screened out in time. The sharp bulge 15 is conical and/or pyramid, and on the same sieve plate 6, the diameter of the bottom surface of the sharp bulge 15 is equal to the aperture of the sieve pore 16. The sieve plate 6 is provided with the sharp-pointed protruding parts 15, so that material powder meeting the requirement of the particle size can be screened out in time, and the crushing process of the material is aggravated.
In order to separate powder materials with different particle size requirements, the aperture of each sieve plate 6 can be set according to the material properties and the separation target particle size, when the embodiment of the invention is actually used, the sieve plates 6 with various conventional apertures are prefabricated on the sieve plates 6, the sieve plates 6 with special apertures can be temporarily manufactured, and the sieve plates 6 can be replaced according to actual needs, specifically, each sieve plate 6 is detachably installed in the drying bed 14 through the fixed clamping groove 5. On one hand, the dried and crushed material powder is screened by the sieve plate 6 with adjustable particle size, and on the other hand, the aperture of the sieve plate 6 can be adjusted according to the material property and the crushing requirement. When the particle size of the crushed material is smaller than or equal to the aperture set by the sieve plate 6, the dried material reaching the particle size requirement passes through the sieve plate 6.
In the embodiment of the invention, the side wall of the drying bed 14 is provided with the machine body sliding door, the sieve plate 6 can be replaced through the opened machine body sliding door, and when the sieve plate 6 or the repair device needs to be replaced, the machine body sliding door is opened, and the sieve plate 6 can be replaced by pulling the sieve plate 6.
In order to improve the efficiency of the material particles with the required particle size passing through the sieve holes 16, in the embodiment of the invention, the sieve holes 16 are uniformly distributed on the sieve plate 6. In addition, the sharp-pointed protrusions 15 are uniformly distributed on the sieve plate 6, so that large-particle materials can be broken to a close degree, and the materials are prevented from being accumulated at a certain position on the sieve plate 6.
As shown in fig. 2 and 3, a screen plate 6 according to an embodiment of the present invention is provided, where the screen plate 6 is a circular plate, 1 sharp protrusion 15 is disposed at a center of the circular plate, n concentric circular rings are disposed at equal intervals in a radial direction, 4n positions are disposed on each circular ring with reference to a certain direction (for example, the upper side in fig. 2), when n is an odd number, screen holes 16 are disposed at 4n positions on the corresponding circular ring, and when n is an even number, the screen holes 16 and the sharp protrusions are not sequentially disposed at 4n positions on the corresponding circular ring. Thereby make sieve mesh 16 equipartition setting on sieve 6, and sharp-pointed bulge 15 equipartition setting on sieve 6, in addition, every sharp-pointed bulge 15 is sieve mesh 16 apart from nearest position, and the material after the convenient 15 broken sharp-pointed bulge 15 can fall below sieve 6 through sieve mesh 16 the very first time.
Illustratively, as shown in fig. 2, the screen plate 6 is a circular plate, 1 sharp protrusion 15 is disposed at the center of the circle, 2 concentric rings are disposed along the radial direction, and with reference to the upper side, the first ring is disposed at 4 positions, the second ring is disposed at 8 positions, the 4 positions of the first ring are screen holes 16, the upper, lower, left, and right positions of the second ring are screen holes 16, and the upper, lower, upper, right, and lower left positions are sharp protrusions 15. Therefore, the positions of the sharp-pointed convex parts 15 at the center, which are closest to the first circular ring, are the sieve holes 16 from the upper side, the lower side, the left side and the right side, 4 positions are the sieve holes 16, and each sharp-pointed convex part 15 on the second circular ring is the sieve hole 16 on the first circular ring from the closest position, so that the materials crushed by the sharp-pointed convex parts 15 can immediately fall below the sieve plate 6 through the sieve holes 16 as long as the particle size is smaller than the aperture of the sieve hole 16.
In order to facilitate discharging, in the embodiment of the present invention, the bottom of the drying bed 14 is provided with an inclined bottom plate; a discharge hole 11 is formed in the side wall of the bottom end of the bottom plate in the inclined direction; the discharge port 11 is communicated with the material collecting device 10. The material that has dried and reached the particle size requirement will pass through sieve 6, reachs and sets up at sieve 6 bottom discharge gate 11, and the bottom plate is the inclined plane that has certain inclination, makes things convenient for the material to remove to discharge gate 11, and the material enters into material collection device 10 through this export in to in time separate out the powder material that reaches the particle size requirement.
When the material enters the material collecting device 10, the hot carrier gas also enters the material collecting device 10, when the material powder is dried and the particle size of the material powder meets the material crushing requirement in the drying and crushing process of the material, a part of the material enters the material collecting device 10 along the bottom plate, and the other part of the material powder is carried by the hot carrier gas along with the flow of the hot carrier gas. In the embodiment of the invention, the material collecting device is provided with an air outlet, a filter membrane is arranged on the air outlet to filter the hot carrier gas carrying the material powder, and a part of the material powder is blocked in the material collecting device 10. The gas outlet is connected with outlet duct 13, sets up cyclone dust collector 8 on outlet duct 13, still contains the hot carrier gas of a small amount of material powder after filtering and separates, makes and hardly carries the material powder in the final combustion gas, avoids environmental pollution, prevents to cause harm to operating personnel.
In addition, an induced draft fan 9 is arranged on the air outlet pipe 13 at the downstream of the cyclone dust removal device 8 to provide power for hot carrier gas flow.
In the embodiment of the invention, the vibration mechanism is used for vibrating the drying bed 14 so as to realize crushing, drying and sorting, and specifically, the vibration mechanism comprises a vibration generating device 7, and the vibration generating device 7 is connected with the bottom of the drying bed 14 and drives the drying bed 14 to vibrate. Along with the continuous drying of material, the grindability of material improves, and the vibration has accelerated the crushing process of material, and the same broken material is dried more easily again, and both promote each other, so reduced the required time of drying. In the dry process of material, after partly material powder particle diameter reachd crushing requirement, can pile up on sieve 6, the oscillator drives sieve 6 vibration simultaneously, and material powder passes through 6 sieve meshes 16 of sieve with higher speed to screening efficiency has been improved.
In order to prevent the drying bed 14 from being damaged by the vibration of the vibration generator 7, in the embodiment of the present invention, the drying bed 14 is fixedly connected to the output end of the vibration generator through the fixing device 12, so as to ensure that the drying bed 14 and the vibrating table of the vibration generator have good connection performance. The fixing device 12 is provided with a plurality of fixing devices which are uniformly distributed on the circumference of the drying bed 14, so that the connection performance of each position between the drying bed 14 and the vibration table is consistent.
In the embodiment of the invention, the drying mechanism dries the material in the drying bed 14 in a mode of introducing hot carrier gas, and particularly, the drying mechanism further comprises a hot carrier gas generator 1 and a hot carrier gas heater 2; the hot carrier gas generator 1 is used for generating superheated steam, and the hot carrier gas heater 2 heats the superheated steam to form hot carrier gas. The hot carrier gas generator 1 is used as a heat source of hot carrier gas, the hot carrier gas heater 2 can adjust the temperature of the hot carrier gas according to actual requirements, and different materials are different in drying degree according to different properties in the drying process. When the drying requirement of the material is high, the temperature of the hot carrier gas is increased, and the hot carrier gas is accelerated to carry away the moisture in the material; when the drying requirement of the material is lower, the temperature of the hot carrier gas can be properly adjusted lower, so that the aim of adjusting the temperature of the hot carrier gas according to the property of the material is fulfilled.
On the multi-layer sieve plate 6, the more the particles of oversize materials close to the upper sieve plate 6 are, the more difficulty in drying is, so that in the embodiment of the invention, hot carrier gas enters the drying bed 14 through the gas inlet 4; the air inlet 4 is arranged at the top of the desiccant bed 14. The hot carrier gas enters the drying bed 14 from the top to rapidly dry the surface of the large-particle material, thereby facilitating preliminary crushing, and improving the efficiency of drying and crushing low-rank coal.
In summary, the crushing, drying and screening integrated processing device provided by the embodiment of the invention can complete the drying and crushing processes of the material in a high-efficiency manner, the drying and crushing processes are performed simultaneously, additional material crushing pretreatment is not required, hot carrier gas introduced from the upper part of the drying device can fully contact the surface of the material, absorb moisture in the material and lead the moisture out of the crushing chamber in time, the grindability of the material is improved along with the continuous drying of the material, the vibration accelerates the crushing process of the material, the same crushed material is easier to dry, the two processes are mutually promoted, and thus the time required by crushing and drying is reduced; the grindability and the crushability of the low-rank coal are improved in the drying process, meanwhile, the heating area of the lignite is increased by crushing, the mass transfer and the heat transfer in the drying process are enhanced, the low-rank coal and the lignite are mutually coupled, and the energy consumption in the drying process is reduced; in the invention, small-particle materials fall from the sieve pores 16 and are separated in time; the temperature of the hot carrier gas can be regulated and controlled by the superheated steam generating device, the regulation and control can be implemented according to different characteristics of the crushed materials, and the filter membrane at the hot carrier gas outlet of the system can prevent dust of the crushed materials from entering the atmosphere and polluting the environment; the drying device bottom is equipped with the vibrator, and on the one hand, the vibrator takes 6 vibrations of sieve board to in time sieve out and reaches the material powder that the particle diameter required, and on the other hand, the vibration energy that the vibration exciter brought promotes the breakage of material.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a crushing drying screening integration processing apparatus which characterized in that, crushing drying screening integration processing apparatus includes: a vibration mechanism and a drying mechanism;
the drying mechanism is provided with a drying bed (14), and dry hot carrier gas is introduced into the drying bed (14); the drying bed (14) is fixedly connected with the vibration mechanism and is driven by the vibration mechanism to vibrate;
the drying bed (14) is provided with a sieve plate (6), and the sieve plate (6) is provided with sieve holes (16) and sharp protrusions (15) with upward pointed ends; the top of the drying bed (14) is provided with a feed inlet (3), the bottom of the drying bed (14) is provided with a discharge outlet (11), and materials entering the drying bed (14) through the feed inlet (3) can only pass through the sieve plate (6) to reach the discharge outlet (11).
2. The integrated crushing, drying and screening treatment device according to claim 1, wherein the drying bed (14) is cylindrical; the sieve plates (6) are arranged in the drying bed (14) from top to bottom, and the pore diameter of the sieve pores (16) of the sieve plate (6) on the upper layer is larger than that of the sieve pores (16) of the sieve plate (6) on the lower layer;
the sharp bulge (15) is conical and/or pyramidal; on the same sieve plate (6), the diameter of the bottom surface of the sharp bulge (15) is equal to the aperture of the sieve hole (16).
3. The integrated crushing, drying and screening treatment device according to claim 2, wherein each screen plate (6) is detachably mounted in the drying bed (14) through a fixed clamping groove (5).
4. The integrated crushing, drying and screening treatment device according to claim 3, wherein the side wall of the drying bed (14) is provided with a machine body sliding door, and the screen plate (6) can be replaced through the opened machine body sliding door.
5. The integrated crushing, drying and screening treatment device according to claims 1 to 4, wherein the bottom of the drying bed (14) is provided with an inclined bottom plate; a discharge hole (11) is formed in the side wall of the bottom end of the bottom plate in the inclined direction;
the discharge hole (11) is communicated with the material collecting device (10).
6. The integrated crushing, drying and screening treatment device according to claim 5, wherein the material collecting device (10) is provided with an air outlet pipe (13), and the air outlet pipe (13) is provided with an induced draft fan (9).
7. The integrated crushing, drying and screening treatment device according to claims 1 to 4, wherein the vibration mechanism comprises a vibration generating device (7), and the vibration generating device (7) is connected with the bottom of the drying bed (14) and drives the drying bed (14) to vibrate.
8. The integrated crushing, drying and screening treatment device according to claim 7, wherein the drying bed (14) is fixedly connected with the output end of the vibration generating device (7) through a fixing device (12).
9. The integrated crushing, drying and screening treatment device according to the claims 1 to 4, wherein the drying mechanism further comprises a hot carrier gas generator (1) and a hot carrier gas heater (2);
the hot carrier gas generator (1) is used for generating superheated steam, and the hot carrier gas heater (2) heats the superheated steam to form hot carrier gas.
10. The integrated crushing, drying and screening treatment device according to claim 9, wherein the hot carrier gas enters the drying bed (14) through the gas inlet (4); the air inlet (4) is arranged at the top of the drying bed (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967732.3A CN112138836B (en) | 2020-09-15 | 2020-09-15 | Crushing, drying and screening integrated treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967732.3A CN112138836B (en) | 2020-09-15 | 2020-09-15 | Crushing, drying and screening integrated treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112138836A true CN112138836A (en) | 2020-12-29 |
| CN112138836B CN112138836B (en) | 2022-03-29 |
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| CN202010967732.3A Active CN112138836B (en) | 2020-09-15 | 2020-09-15 | Crushing, drying and screening integrated treatment device |
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| CN112138836B (en) | 2022-03-29 |
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