CN107940970B - Novel disc type dryer - Google Patents
Novel disc type dryer Download PDFInfo
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- CN107940970B CN107940970B CN201711378930.0A CN201711378930A CN107940970B CN 107940970 B CN107940970 B CN 107940970B CN 201711378930 A CN201711378930 A CN 201711378930A CN 107940970 B CN107940970 B CN 107940970B
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- conical drying
- drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/16—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials passing down a heated surface, e.g. fluid-heated closed ducts or other heating elements in contact with the moving stack of material
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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
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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)
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to the field of equipment manufacturing, and particularly relates to a novel disc dryer. Therefore, the energy consumption of the whole set of equipment is greatly reduced, the conical drying plate A and the conical drying plate B are not interfered by other components in the working process, the long-time stable operation is ensured, and the safety production is ensured. The cavities of the conical drying disk A and the conical drying disk B are all separated by a plurality of partitions to form gas channels, so that heat-conducting medium steam uniformly circulates in the whole cavity, and the effectiveness of heat conduction is guaranteed.
Description
Technical Field
The invention belongs to the field of equipment manufacturing, and particularly relates to a novel disc type dryer.
Background
The disc type dryer mainly takes dry powder as a main part, is a drying device which integrates a series of advanced technologies on the basis of an intermittent stirring and conducting dryer, is developed and developed through continuous improvement and is mainly heat conduction, and comprises a multilayer fixed hollow heating circular material carrying disc, a rotary rake and a vertical type. The drying process is that heat carrier is introduced into hollow discs in different layers to heat wet material on the disc surface indirectly in heat conducting mode, and under the action of the rotating rake blades, the wet material in the material is evaporated at operation temperature and the vapor is exhausted with tail gas from the apparatus to obtain qualified dried product continuously in the bottom of the apparatus. In recent years, many countries have widely applied the dye to the fields of chemical industry, dye, pesticide, plastics, medicine, food and the like, and the improvement is continuously increased in use. Compared with the traditional drying equipment, the drying equipment has the advantages of high thermal efficiency, energy consumption saving, uniform drying, good product quality, small occupied area, less accessory equipment, less pollution, continuous production, convenient operation, wide application range and the like. Therefore, the drying technology has wide development prospect, and more people pay attention to and research the drying technology.
The working principle of the disc dryer is as follows: the large and small drying discs are alternately arranged in the inner cavity of the dryer from top to bottom; when the drying device works, wet materials are continuously added from a hopper at the top of the dryer and fall to the inner edge of the top small drying disc surface, a scraper device with a rake blade (consisting of a main shaft, a rake arm and the rake blade, wherein the rake blade has directionality and can float on the disc surface) rotates, the rake blade continuously turns over the wet materials while pushing the wet materials to the outer edge of the small drying disc from the inner edge of the small drying disc gradually in a spiral track, and finally falls to the outer edge of the next layer of drying disc (large drying disc) from the outer edge; the rake blades on the large drying disk are opposite to the rake blades on the small drying disks, so that the materials on the large drying disk are gradually pushed to the inner edge of the large drying disk from the outer edge of the disk surface in a spiral track, and the inner edge of the large drying disk is provided with a hole, so that the materials fall to the inner edge of the next layer of small drying disk from the hole of the inner edge; the material is continuously pushed to the outer edge by the harrow leaves on the small drying plate surface and then falls to the outer edge of the next layer of large drying plate; in this way, the materials pass through the drying discs with the sizes alternating up and down, and finally flow out from the discharge hole at the lowest end of the dryer. Heating media are introduced into the large drying tray and the small drying tray, steam is generally used as the main material, wet materials are heated on the drying trays, moisture overflows from the materials and is discharged from a moisture discharging port arranged at the top of the container, and the materials are gradually dried in the process of transferring from top to bottom.
In addition to the above structure, in recent years, a vibrating tray dryer has been developed, such as a vibrating tray dryer with a turbulent flow function described in patent CN201210235505.7, which includes a vibrating motor, a vibrating base tray and a vibrating spring disposed therebetween, wherein a vibrating tray is disposed above the vibrating base tray, and an inlet and an outlet are respectively disposed on the upper and lower surfaces of each vibrating tray; an interlayer is arranged at the bottom of each vibration disc and is communicated with an oil inlet and an oil outlet which are arranged on the outer circumference of the vibration disc; a plurality of equally spaced circles are distributed on the inner circumference of the interlayer, a plurality of uniformly distributed turbulence columns are arranged on each circle, and the turbulence columns on two adjacent circles are distributed in a staggered manner. The drier adopts a broken vibration mode to enable the material to run horizontally and circularly, avoids friction generated between mechanical motion matching, realizes continuous drying of the granular material with high purity and high hardness, achieves the purpose of energy saving due to no mechanical transmission part and low power consumption, and simultaneously has a turbulence structure to further strengthen heat transfer for the flow of the heating medium in the vibration disc.
No matter whether the stirring type or the vibrating type of the large and small plates is adopted, a transmission structure needs to be introduced, as heat-conducting media, such as steam, hot water or heat-conducting oil, flow in the drying plate, welding seams are easy to occur in the structure of the drying plate after the drying plate is used for a long time, once the heat-conducting media are leaked, safety accidents are easy to occur, and especially the heat-conducting oil can possibly cause explosion. In addition, the energy consumption of the conventional disc dryer is high, and mainly comes from a transmission mechanism for turning over materials, so that the conventional disc dryer does not meet the related requirements on energy conservation and emission reduction.
Disclosure of Invention
According to the defects of the prior art, the invention provides the novel disc type dryer, which cancels a transmission mechanism for turning materials, ensures that the materials are sequentially and downwards blanked in a plurality of drying discs by utilizing the cooperation of gravity and inclined planes, and dries the materials in the blanking process, and has the characteristics of low energy consumption and safe use.
The invention relates to a novel disc dryer, which is characterized in that: comprises a shell, a feed inlet, a discharge outlet, an exhaust fan, a plurality of conical drying discs A and a plurality of conical drying discs B;
the feeding hole is formed in the center of the top of the shell, the discharging hole is formed in the center of the bottom of the shell, and the exhaust fan is communicated with one side of the top of the shell through an exhaust pipeline;
the conical drying disc A is of an integrated closed structure and comprises an upper disc surface A, a lower disc surface A and a closed surface positioned between the upper disc surface A and the lower disc surface A, wherein a cavity is formed between the upper disc surface A and the closed surface, the lower disc surface A and the closed surface are positioned at the bottom, two sides of the bottom of the cavity are respectively communicated with an air inlet pipe and an air outlet pipe, and an air passage between the air inlet pipe and the air outlet pipe is formed in the cavity through a plurality of partitions;
the conical drying disc B is of an integrated closed structure and comprises a blanking hole, an upper disc surface B, a lower disc surface B and a closed surface positioned between the upper disc surface B and the lower disc surface B, the closed surface is positioned at the top of the upper disc surface B, a cavity is formed among the upper disc surface B, the lower disc surface B and the closed surface, the blanking hole is formed in the position of the conical tip, two sides of the bottom of the cavity are respectively communicated with an air inlet pipe and an air outlet pipe, and an air channel between the air inlet pipe and the air outlet pipe is formed in the cavity through a plurality of partitions;
the vertical direction of conical drying dish A and conical drying dish B set gradually in the casing in turn, and be located the top be conical drying dish A, be located the bottom be conical drying dish B, conical drying dish B top circumference diameter in circumference be greater than conical drying dish A's outer periphery diameter, conical drying dish A and conical drying dish B's awl point and feed inlet, discharge gate be located same axis.
The working principle of the invention is as follows: the powder to be dried is continuously fed from the feeding hole, is influenced by gravity and a slope after contacting the conical tip of the uppermost conical drying disk A, rolls downwards along the conical surface, is subjected to heat conduction of a heat-conducting medium in the rolling process, freely falls into the inner conical surface of the conical drying disk B when rolling to the outer circumferential surface of the conical drying disk A, continuously rolls downwards along the conical surface, is subjected to heat conduction of the heat-conducting medium in the rolling process, finally falls onto the outer conical surface of the conical drying disk A of the next stage from the blanking hole, and repeats in this way, and finally falls from the discharging hole, and in the whole process, the powder to be dried is dried.
Wherein, the preferred scheme is as follows:
the number of the conical drying disks A is 4-6, and the number of the conical drying disks B is the same as that of the conical drying disks A.
Still be provided with a plurality of groups in the vertical direction in the casing and have the striker plate, striker plate and conical drying dish A's bottom outer periphery between have the blanking clearance, the blanking clearance be below 2 mm. A shape similar to a funnel is formed between the material baffle and the outer circumferential surface of the bottom of the conical drying disc A, and firstly, the powder is delayed from entering the next layer too fast, so that the material can be fully dried on the conical drying disc A.
The inclination of the conical drying disk A and the conical drying disk B is 1.
The plurality of partitions in the conical drying disc A comprise a central partition and side partitions distributed on two sides of the central partition in a staggered manner; the central partition is arranged on two sides of the cone tip, the projection of the central partition is perpendicular to the axis of the air inlet pipe, gaps are reserved between two ends of the central partition and the sealing surfaces, and side partitions are alternately arranged between two sides of the central partition and the adjacent sealing surfaces in a staggered mode.
The plurality of partitions in the conical drying disk B comprise a central partition and side partitions which are distributed on two sides of the central partition in a staggered manner; the central partition is arranged on two sides of the blanking hole, the projection of the central partition is perpendicular to the axis where the air inlet pipe is located, gaps are reserved between two ends of the central partition and the sealing surfaces, and side partitions are alternately arranged between two sides of the central partition and the adjacent sealing surfaces in a staggered mode.
The aperture of the blanking hole is 3-5 mm.
The invention has the advantages that: (1) Compared with the traditional disc type dryer, the disc type dryer has the advantages that the transmission mechanism for turning or vibrating the materials is not provided any more, the upright and inverted conical drying disc A and the inverted conical drying disc B are utilized, the powder moves on the conical surfaces of the upright and inverted conical drying disc A and the inverted conical drying disc B by utilizing gravity free falling, the powder moving speed is guaranteed to be not too fast by proper inclination, meanwhile, the material baffle plate and the material falling hole are arranged, the delaying effect can be achieved, and the material turning effect is achieved in the rolling process on the conical surface. Therefore, the energy consumption of the whole set of equipment is greatly reduced, the conical drying plate A and the conical drying plate B are not interfered by other components in the working process, the long-time stable operation is ensured, and the safety production is ensured. (2) The cavities of the conical drying plate A and the conical drying plate B form gas channels through a plurality of partitions, so that heat-conducting medium steam uniformly circulates in the whole cavity, and the effectiveness of heat conduction is guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a conical drying tray A;
FIG. 3 is a schematic top view of a conical drying plate A;
FIG. 4 is a schematic structural view of a conical drying tray B;
FIG. 5 is a schematic bottom view of a conical drying tray B;
in the figure: 1. the drying device comprises a shell 2, a feeding hole 3, a discharging hole 4, an exhaust fan 5, a conical drying disk A6, a conical drying disk B7, an upper disk surface A8, a lower disk surface A9, an air inlet pipe 10, an air outlet pipe 11, a blanking hole 12, an upper disk surface B13, a lower disk surface B14, a baffle plate 15, a central partition 16 and side partitions.
Detailed Description
The invention is further described below with reference to examples and figures.
Example 1:
as shown in fig. 1 to 5, a novel disc dryer comprises a shell 1, a feed inlet 2, a discharge outlet 3, an exhaust fan 4, a plurality of conical drying discs A5 and a plurality of conical drying discs B6;
the feeding hole 2 is arranged in the center of the top of the shell 1, the discharging hole 3 is arranged in the center of the bottom of the shell 1, and the exhaust fan 4 is communicated with one side of the top of the shell 1 through an exhaust pipeline;
the conical drying disc A5 is of an integrated closed structure and comprises an upper disc surface A7, a lower disc surface A8 and a closed surface positioned between the upper disc surface A7 and the lower disc surface A8, the closed surface is positioned at the bottom of the upper disc surface A7 and the lower disc surface A8, a cavity is formed between the upper disc surface A7 and the closed surface, two sides of the bottom of the cavity are respectively communicated with an air inlet pipe 9 and an air outlet pipe 10, and an air passage between the air inlet pipe 9 and the air outlet pipe 10 is formed in the cavity through a plurality of partitions;
the conical drying disc B6 is of an integrated closed structure and comprises a blanking hole 11, an upper disc surface B12, a lower disc surface B13 and a closed surface positioned between the blanking hole and the upper disc surface B12 and the lower disc surface B13, wherein a cavity is formed between the upper disc surface B12 and the closed surface, the blanking hole 11 is formed in the conical point, the two sides of the bottom of the cavity are respectively communicated with an air inlet pipe 9 and an air outlet pipe 10, and an air passage between the air inlet pipe 9 and the air outlet pipe 10 is formed in the cavity through a plurality of partitions;
the vertical direction of conical drying dish A5 and conical drying dish B6 set gradually in the casing 1 in turn, and be located the top for conical drying dish A5, be located the bottom for conical drying dish B6, conical drying dish B6 top inner circumference diameter be greater than conical drying dish A5's outer periphery diameter, conical drying dish A5 and conical drying dish B6's awl point and feed inlet, discharge gate be located same axis.
The working principle is as follows: the powder to be dried is continuously fed from the feeding hole 2, is influenced by gravity and a slope after contacting the conical tip of the uppermost conical drying disc A5, rolls downwards along the conical surface, is subjected to heat conduction of a heat-conducting medium in the rolling process, freely falls to move into the inner conical surface of the conical drying disc B6 when rolling to the outer circumferential surface of the conical drying disc A5, continuously rolls downwards along the conical surface, is subjected to heat conduction of the heat-conducting medium in the rolling process, finally falls onto the outer conical surface of the conical drying disc A5 of the next stage from the blanking hole 11, and repeats in this cycle, and finally falls from the discharging hole 3, and the powder to be dried is dried in the whole process.
The number of the conical drying disks A5 is 4, and the number of the conical drying disks B6 is the same as that of the conical drying disks A.
The casing 1 in still be provided with a plurality of groups on the vertical direction and have striker plate 14, striker plate 14 and conical drying dish A5's bottom outer periphery between have the blanking clearance, the blanking clearance be below 2 mm. The shape similar to a funnel is formed between the material baffle plate 14 and the outer circumferential surface of the bottom of the conical drying disk A5, and firstly, the powder is delayed from entering the next layer too fast, so that the materials can be fully dried on the conical drying disk A5.
The inclination of the conical drying disk A5 and the conical drying disk B6 is 1.
The plurality of partitions in the conical drying disk A5 comprise a central partition 15 and side partitions 16 which are distributed on two sides of the central partition 15 in a staggered manner; the central partition 15 is arranged on two sides of the conical tip, the projection of the central partition 15 is perpendicular to the axis of the air inlet pipe 9, gaps are reserved between two ends of the central partition 15 and the sealing surfaces, and side partitions 16 are alternately arranged between two sides of the central partition 15 and the adjacent sealing surfaces in a staggered mode.
The plurality of partitions in the conical drying disk B6 comprise a central partition 15 and side partitions 16 which are distributed on two sides of the central partition 15 in a staggered manner; the central partition 15 is arranged on two sides of the blanking hole 11, the projection of the central partition is perpendicular to the axis of the air inlet pipe 9, gaps are reserved between two ends of the central partition 15 and the sealing surfaces, and side partitions 16 are alternately arranged between two sides of the central partition 15 and the adjacent sealing surfaces in a staggered mode.
The diameter of the blanking hole 11 is 5mm.
Claims (7)
1. A novel disc dryer is characterized in that: comprises a shell, a feed inlet, a discharge outlet, an exhaust fan, a plurality of conical drying discs A and a plurality of conical drying discs B;
the feeding hole is formed in the center of the top of the shell, the discharging hole is formed in the center of the bottom of the shell, and the exhaust fan is communicated with one side of the top of the shell through an exhaust pipeline;
the conical drying disc A is of an integrated closed structure and comprises an upper disc surface A, a lower disc surface A and a closed surface positioned between the upper disc surface A and the lower disc surface A, wherein a cavity is formed between the upper disc surface A and the closed surface, the lower disc surface A and the closed surface are positioned at the bottom, two sides of the bottom of the cavity are respectively communicated with an air inlet pipe and an air outlet pipe, and an air passage between the air inlet pipe and the air outlet pipe is formed in the cavity through a plurality of partitions;
the conical drying disc B is of an integrated closed structure and comprises a blanking hole, an upper disc surface B, a lower disc surface B and a closed surface positioned between the upper disc surface B and the lower disc surface B, the closed surface is positioned at the top of the upper disc surface B, a cavity is formed among the upper disc surface B, the lower disc surface B and the closed surface, the blanking hole is formed in the position of the conical tip, two sides of the bottom of the cavity are respectively communicated with an air inlet pipe and an air outlet pipe, and an air channel between the air inlet pipe and the air outlet pipe is formed in the cavity through a plurality of partitions;
the vertical direction of conical drying dish A and conical drying dish B set gradually in the casing in turn, and be located the top be conical drying dish A, be located the bottom be conical drying dish B, conical drying dish B top circumference diameter in circumference be greater than conical drying dish A's outer periphery diameter, conical drying dish A and conical drying dish B's awl point and feed inlet, discharge gate be located same axis.
2. The new tray dryer as set forth in claim 1, wherein: the number of the conical drying disks A is 4-6, and the number of the conical drying disks B is the same as that of the conical drying disks A.
3. The new tray dryer as set forth in claim 1, wherein: still be provided with a plurality of groups in the vertical direction in the casing and have the striker plate, striker plate and conical drying plate A's bottom outer periphery between have the blanking clearance, the blanking clearance be below 2 mm.
4. The new tray dryer as set forth in claim 1, wherein: the inclination of the conical drying disk A and the conical drying disk B is 1.
5. The new tray dryer as claimed in claim 1, wherein: the plurality of partitions in the conical drying disc A comprise a central partition and side partitions distributed on two sides of the central partition in a staggered manner; the central partition is arranged on two sides of the cone tip, the projection of the central partition is perpendicular to the axis of the air inlet pipe, gaps are reserved between two ends of the central partition and the closed surfaces, and side partitions are alternately arranged between two sides of the central partition and the adjacent closed surfaces in a staggered mode.
6. The new tray dryer as set forth in claim 1, wherein: the plurality of partitions in the conical drying disc B comprise a central partition and side partitions distributed on two sides of the central partition in a staggered manner; the central partition is arranged on two sides of the blanking hole, the projection of the central partition is perpendicular to the axis where the air inlet pipe is located, gaps are reserved between two ends of the central partition and the sealing surfaces, and side partitions are alternately arranged between two sides of the central partition and the adjacent sealing surfaces in a staggered mode.
7. The new tray dryer as set forth in claim 1, wherein: the aperture of the blanking hole is 3-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378930.0A CN107940970B (en) | 2017-12-19 | 2017-12-19 | Novel disc type dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378930.0A CN107940970B (en) | 2017-12-19 | 2017-12-19 | Novel disc type dryer |
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| CN107940970A CN107940970A (en) | 2018-04-20 |
| CN107940970B true CN107940970B (en) | 2023-04-07 |
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| CN110645777A (en) * | 2019-10-15 | 2020-01-03 | 江苏双虎环保节能设备科技有限公司 | Drying system and working method thereof |
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| CN107940970A (en) | 2018-04-20 |
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