CN118044635A - Regenerative air flow drying device - Google Patents
Regenerative air flow drying device Download PDFInfo
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- CN118044635A CN118044635A CN202410452030.XA CN202410452030A CN118044635A CN 118044635 A CN118044635 A CN 118044635A CN 202410452030 A CN202410452030 A CN 202410452030A CN 118044635 A CN118044635 A CN 118044635A
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- Prior art keywords
- drying
- cavity
- cylindrical filter
- heat exchange
- discharging
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- 238000001035 drying Methods 0.000 title claims abstract description 155
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims 3
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 9
- 230000000149 penetrating effect Effects 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000002918 waste heat Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 235000019504 cigarettes Nutrition 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 43
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a regenerative air flow drying device, which relates to the technical field of cigarette processing and comprises a drying box with one end connected with a hot air box, and further comprises: the cylindrical filter is rotatably arranged on the drying box, the interior of the drying box is divided into a drying cavity and a discharging cavity, and a driver for driving the cylindrical filter to rotate is arranged on the drying box; a heat exchange cavity is arranged in the cylindrical filter, and round cover plates in rotary sealing connection with the cavity walls of the heat exchange cavity are arranged at two ends of the heat exchange cavity; the preheating type feeding pipe is provided with a high-temperature preheating pipe section penetrating through the heat exchange cavity and the round cover plates at the two ends, and a low-temperature preheating pipe section penetrating through the discharging cavity, the discharging end, close to the high-temperature preheating pipe section, of the preheating type feeding pipe is communicated with the drying cavity, and the integration of the waste heat recovery unit and the drying unit is realized, so that the purposes of reducing the loss in the heat recovery process, reducing the occupation of the air flow drying device on the installation space and improving the drying efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of cigarette processing, in particular to a regenerative air flow drying device.
Background
Air flow drying is one of two main drying modes of tobacco shreds, and is widely applied to cigarette production enterprises in the tobacco industry at present. The high-temperature gas in the pneumatic drying equipment replaces air in pneumatic conveying, so that the cut tobacco is dehydrated in the conveying process.
At present, the drum-type and tower-type air drying devices are mainly adopted, high-temperature air flow is introduced into the drum, and meanwhile, the drum turns materials in the drum through rotation, so that the materials are uniformly dried. The tower type air flow drying device pumps high-temperature high-speed air flow into the vertically arranged multi-section S-shaped pipeline, and ensures the drying degree of the materials discharged out of the pipeline by utilizing the characteristic of lighter weight of the dried materials.
Drum pneumatic drying devices and tower pneumatic drying devices are generally provided with a waste heat recovery device for recovering heat in exhaust gas. However, due to the structure of the drum type pneumatic drying device and the tower type pneumatic drying device, the waste heat recovery device needs to be independently arranged outside, so that the pneumatic drying system adopting the drum type pneumatic drying device and the tower type pneumatic drying device is long in pipeline, occupies a large installation space, and increases heat loss in the waste heat recovery process.
Disclosure of Invention
The invention aims to provide a regenerative air flow drying device so as to solve the technical problems.
Based on the above object, the present invention provides a regenerative air dryer, which includes a drying box with one end connected to a hot air box, and further includes:
the cylinder filter is rotatably arranged on the drying box, penetrates through the side walls of the two sides of the drying box, separates the interior of the drying box into a drying cavity and a discharging cavity, and is provided with a driver for driving the cylinder filter to rotate;
The cylinder filter comprises a cylinder filter body, a discharge cavity and a drying raw material collecting cavity, wherein a plurality of partition convex strips are arranged on the outer side wall of the cylinder filter along the circumferential direction so as to facilitate the dried raw material intercepted by the cylinder filter to be transferred to the discharge cavity along with the rotation of the cylinder filter;
The inside of the cylindrical filter is a heat exchange cavity, and both ends of the heat exchange cavity are provided with round cover plates which are rotationally and hermetically connected with the cavity wall of the heat exchange cavity;
The preheating type feeding pipe is provided with a high-temperature preheating pipe section penetrating through the heat exchange cavity and the round cover plates at the two ends and a low-temperature preheating pipe section penetrating through the discharging cavity, and the preheating type feeding pipe is communicated with the drying cavity near the discharging end of the high-temperature preheating pipe section;
The flow gathering baffle is arranged in the heat exchange cavity and connected with the round cover plates at the two ends, and the flow gathering baffle is positioned between the discharge cavity and the high-temperature preheating pipe section;
Wherein, the flow collecting baffle is provided with a flow collecting hole for enabling the air flow to intensively blow to the discharging cavity side of the cylindrical filter;
The bottom of the flow gathering baffle is bent towards the lower part of the high-temperature preheating pipe section to form a water gathering groove for collecting condensed water, and a drain pipe communicated with the water gathering groove is arranged on the circular cover plate.
Further, a plurality of heat exchange fins are arranged on the high-temperature preheating pipe section at intervals along the length direction and are connected, and the flow gathering baffle is positioned between the heat exchange fins and the discharging cavity.
Further, the preheating type feeding pipe is vertically provided with a plurality of feeding pipes at intervals, and a plurality of high-temperature preheating pipe sections are connected through a plurality of heat exchange fins.
Further, the preheating type feeding pipe comprises a feeding pipe and a preheating type feeding pipe, wherein the feeding pipe is provided with a feeding end, a discharging cavity is communicated with the feeding end, a preheating type feeding pipe is arranged on the feeding end of the preheating type feeding pipe, and the preheating type feeding pipe is communicated with the feeding end of the preheating type feeding pipe.
Further, a filter screen is arranged in the discharging cavity, the filter screen is positioned between the cylindrical filter and the air inlet pipe, a discharging hole communicated with the discharging cavity is formed in the wall of the drying box, and the discharging hole is positioned between the cylindrical filter and the filter screen.
Further, the bottom of filter screen is kept away from drum filter slope setting, the discharge gate extends to the bottom of filter screen.
Further, a plurality of extended-range drying channels are arranged in the drying cavity, the extended-range drying channels are of wave-shaped structures, and the peaks and bottoms of the extended Cheng Gansao channels are distributed vertically;
the discharge end of the preheating type feeding pipe is positioned on the side surface of the corresponding Cheng Gansao-increasing channel, and the blowing openings of the hot air box are positioned at the front ends of the plurality of extended-range drying channels.
Further, the extended-range drying channel comprises a pair of guide plates which are arranged at intervals in the vertical direction and are in wave shape.
Further, a plurality of baffle that increase Cheng Gansao passageway is located the below passes through the bracing piece and connects to fixed setting is in the drying chamber, a plurality of baffle that increase Cheng Gansao passageway is located the top passes through the regulation pole and connects, increase Cheng Gansao both sides of passageway and all be provided with bracing piece and regulation pole, the top of drying cabinet is provided with the slide hole that supplies the regulation pole to pass, the top of drying cabinet is provided with the lift adjustment mechanism who is connected with the regulation pole.
Further, the lifting adjusting mechanism comprises a linkage frame and a lifting driving cylinder, wherein the lifting driving cylinder is arranged at the top of the drying box and is connected with the linkage frame, and the linkage frame is connected with a plurality of adjusting rods on two sides.
The invention has the beneficial effects that:
according to the invention, the cylinder filter is transversely arranged in the middle section of the drying box, the interior of the drying box is divided into the drying cavity and the discharging cavity, the heat exchange cavity in the cylinder filter is sealed by the round cover plates with the two ends in rotary sealing connection, the heat exchange preheating type feeding pipe is provided with a low-temperature preheating pipe section penetrating through the discharging cavity and a high-temperature preheating pipe section penetrating through the heat exchange cavity, the discharging end, close to the high-temperature preheating pipe section, of the preheating type feeding pipe is communicated with the drying cavity, the hot air flow of the drying cavity 201 and the heat exchange cavity is utilized to preheat the wet materials conveyed in the preheating type feeding pipe in two sections, and the integration of the waste heat recovery unit and the drying unit is realized, so that the purposes of reducing loss in the heat recovery process, reducing occupation of an air flow drying device on installation space and improving drying efficiency are achieved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the whole structure of the drying oven according to the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the assembly of a cylindrical filter, a Cheng Gansao pass and a preheated feed tube of the present invention;
FIG. 5 is a schematic view of a heat exchange fin according to the present invention;
Fig. 6 is a schematic diagram of a box structure of the drying box according to the present invention;
FIG. 7 is a schematic view of an assembly of a blower and an air intake duct of the present invention;
FIG. 8 is a schematic diagram illustrating the assembly of the lift adjustment mechanism and the Cheng Gansao channels of the present invention;
FIG. 9 is a schematic view of an assembly of a support rod and a baffle according to the present invention;
FIG. 10 is a schematic view of an assembly of an adjustment lever and a baffle of the present invention;
FIG. 11 is a schematic view of the structure of the flow-gathering baffle of the present invention;
fig. 12 is a schematic view of the structure of the cylindrical filter and the partition rib according to the present invention.
The reference numerals in the figures are:
1-a hot air box; 2-a drying oven; 3-cylinder filter; 4-driver; 5-separating the convex strips; 6-a heat exchange cavity; 7-a circular cover plate; 8-preheating type feeding pipe; 9-a flow gathering baffle; 10-draining pipe; 11-heat exchange fins; 12-blower; 13-a charging hopper; 14-an air inlet pipe; 15-filtering the mixture; 16-a discharge hole; 17-increase Cheng Gansao channels; 18-supporting rods; 19-adjusting the rod; 20-a lifting adjusting mechanism;
201-a drying chamber; 202-a discharge cavity;
801-high temperature preheating pipe section; 802-low temperature preheating pipe sections;
901-a coalescing aperture; 902-a water collecting tank;
1701-baffle;
2001-linkage frame; 2002-lifting driving cylinder.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 12, a regenerative air dryer includes a drying box 2 having one end connected to a hot air box 1, and further includes:
The cylindrical filter 3 is rotatably arranged on the drying box 2, the cylindrical filter 3 penetrates through the side walls of the two sides of the drying box 2, the interior of the drying box 2 is divided into a drying cavity 201 and a discharging cavity 202, and a driver 4 for driving the cylindrical filter 3 to rotate is arranged on the drying box 2;
Wherein, a plurality of partition convex strips 5 are circumferentially arranged on the outer side wall of the cylindrical filter 3 to facilitate the transfer of the dry raw materials intercepted by the cylindrical filter 3 to the discharging cavity 202 along with the rotation of the cylindrical filter 3;
The inside of the cylindrical filter 3 is provided with a heat exchange cavity 6, and both ends of the heat exchange cavity 6 are provided with round cover plates 7 which are rotationally and hermetically connected with the cavity walls of the heat exchange cavity;
a preheating type feed pipe 8, which is provided with a high-temperature preheating pipe section 801 passing through the heat exchange cavity 6 and the round cover plates 7 at the two ends and a low-temperature preheating pipe section 802 passing through the discharging cavity 202, wherein the preheating type feed pipe 8 is communicated with the drying cavity 201 near the discharging end of the high-temperature preheating pipe section 801;
The flow gathering baffle 9 is arranged in the heat exchange cavity 6 and is connected with the round cover plates 7 at the two ends, and the flow gathering baffle 9 is positioned between the discharging cavity 202 and the high-temperature preheating pipe section 801;
wherein, the flow collecting baffle 9 is provided with a flow collecting hole 901 for intensively blowing the air flow to the discharging cavity 202 side of the cylindrical filter 3 so as to help the drying raw material attached to the discharging cavity 202 side of the cylindrical filter 3 to be blown off;
wherein, the bottom of the flow gathering baffle 9 is bent towards the lower part of the high temperature preheating pipe section 801 to form a water gathering tank 902 for gathering condensed water, and a drain pipe 10 communicated with the water gathering tank 902 is arranged on the circular cover plate 7.
The hot air box 1 is fed with hot air flow from the front end of the drying box 2, meanwhile, the preheating type feeding pipe 8 feeds wet materials to the front end of the drying box 2, under the action of drying and blowing of the hot air flow, the wet materials with higher drying degree can move farther under the blowing of the hot air flow until being dried, the dry materials move to the cylindrical filter 3 under the blowing of the hot air flow and are intercepted by the cylindrical filter 3, and the hot air flow carrying evaporated water vapor sequentially passes through the side walls of the two sides of the porous cylindrical filter 3 (the side wall positioned at one side of the drying cavity 201 and the side wall positioned at one side of the discharging cavity 202).
The dried material is intercepted by the cylindrical filter 3, is attached to the side wall of the cylindrical filter 3 under the action of wind force, and is transferred to the discharging cavity 202 along with the rotation of the cylindrical filter 3, at this time, the hot air flow passing through the discharging cavity 202 side of the cylindrical filter 3 blows the dried material attached to the discharging cavity 202 side of the cylindrical filter 3 into the discharging cavity 202, so as to realize discharging.
And, during the process of passing the hot air flow through the cylindrical filter 3, namely, when the hot air flow passes through the heat exchange cavity 6, the high temperature preheating pipe section 801 of the preheating type feeding pipe 8 positioned in the heat exchange cavity 6 is heated. Thereby the wet material passing through the high temperature preheating pipe section 801 is heated, and the preheating and the temperature rising of the wet material before the drying are realized, so that the drying efficiency is improved and the energy consumption is saved.
At the same time, the hot air flow will carry the vapor evaporated from the wet material after drying the wet material in the drying chamber 201. When the high-humidity hot air flows into the discharging cavity 202 and contacts with the high-temperature preheating pipe section 801 for continuously conveying the wet materials, the moisture in the hot air flows can be condensed and rapidly released on the surface of the high-temperature preheating pipe section 801 due to the fact that the temperature difference between the wet materials and the hot air flows is large, so that the high-temperature preheating pipe section 801 is rapidly heated, the humidity of the hot air flows is reduced, the wet discomfort of the production environment caused by direct discharge of the high-humidity hot air flows is avoided, and the moisture absorption and moisture return of the dry materials in the discharging cavity 202 are caused when the temperature is reduced.
The effect of the flow-gathering baffle 9 is that, on the one hand, the velocity of the hot air is greatly reduced after the hot air passes through the drying chamber 201 and the drying chamber 201 side of the cylindrical filter 3, and the hot air in the heat exchange chamber 6 is intensively discharged from the flow-gathering holes 901, and the velocity of the air is increased when the air passes through the relatively narrow holes, so that the hot air is facilitated to blow off the dried materials attached to the discharging chamber 202 side of the cylindrical filter 3. On the other hand, the bottom of the flow-gathering baffle 9 is bent upward and forms a water-gathering tank 902 with the circular cover plates 7 at both ends to receive the condensed water drops directly dropped from the high-temperature preheating pipe section 801 and to receive the condensed water blown toward the flow-gathering baffle 9 by the hot air flow and flowing down along the flow-gathering baffle 9, and the condensed water gathered in the water-gathering tank 902 is discharged through the drain pipe 10 on the circular cover plates 7, thereby realizing the discharge of the condensed water.
In addition, since the condensed water falls in a parabolic path to a lower region of the flow-collecting baffle plate 9 under the action of gravity and wind, in order to avoid the condensed water from flowing through the flow-collecting hole 901, the flow-collecting hole 901 is provided in a region above the flow-collecting baffle plate 9 to avoid the condensed water from flowing through the flow-collecting hole 901.
The plurality of partition ribs 5 on the side wall of the cylindrical filter 3 are used for preventing the dried material from moving toward the top and the bottom of the cylindrical filter 3 along the arc-shaped contour of the drying cavity 201 side of the cylindrical filter 3 under the action of wind force, and blocking gaps between the cylindrical filter 3 and the walls of the top and the bottom of the drying box 2 for the dried material to pass through, so that the cylindrical filter 3 is blocked. And a plurality of wall sand grip 5 that set up circumferentially, cooperation drum filter 3's rotation can make the comparatively even distribution of dry material in a plurality of slot-like regions that are formed by adjacent wall sand grip 5 to carry dry material and get into ejection of compact chamber 202, ensured drum filter 3's steady operation.
The circular cover plate 7 seals two ends of the heat exchange cavity 6 and supports the preheating type feed pipe 8 in an auxiliary manner, and the circular cover plate 7 is in rotary sealing connection with the cylindrical filter 3, for example, a rotary sealing member is disposed on an inner peripheral side wall of a metal ring at two ends of the cylindrical filter 3, so that the cylindrical filter 3 and the circular cover plate 7 are in rotary sealing connection, the rotary sealing connection is a conventional technical means, and a specific structure of the rotary sealing member is not repeated herein.
The driver 4 is used for driving the cylindrical filter 3 to rotate, and the motor on the drying box 2 is connected with the gear ring through the gear rings by arranging the gear rings at two ends of the cylindrical filter 3 so as to drive the cylindrical filter 3 to rotate.
According to the invention, the cylinder filter 3 is transversely arranged in the middle section of the drying box 2, the interior of the drying box 2 is divided into the drying cavity 201 and the discharging cavity 202, the heat exchange cavity 6 in the cylinder filter 3 is sealed by the round cover plate 7 with two ends in rotary sealing connection, the preheating type feeding pipe 8 is provided with a low-temperature preheating pipe section 802 penetrating through the discharging cavity 202 and a high-temperature preheating pipe section 801 penetrating through the heat exchange cavity 6, the 8 of the preheating type feeding pipe 8 is communicated with the drying cavity 201 near the discharging end of the high-temperature preheating pipe section 801, the hot air flow in the hot air box 1 blows in the drying box 2 sequentially through the drying cavity 201, the heat exchange cavity 6 and the discharging cavity 202, and simultaneously, the driver 4 drives the cylinder filter 3 to rotate, so that the dry material in the drying cavity 201 is transferred into the discharging cavity 202, the wet material conveyed in the preheating type feeding pipe 8 is preheated by the hot air flow of the drying cavity 201 and the heat exchange cavity 6, and the waste heat recovery unit and the drying unit are integrated, so that the loss in the heat recovery process is reduced, the occupation of the air flow drying device on the installation space is reduced, and the drying efficiency is improved.
The preheating type feeding pipe further comprises a blower 12 and a feeding hopper 13, an air inlet of the blower 12 is communicated with the discharging cavity 202 through an air inlet pipe 14, an air outlet of the blower 12 is communicated with a feeding end of the preheating type feeding pipe 8, which is close to the low-temperature preheating pipe section 802, and a feeding opening communicated with the feeding hopper 13 is formed in the side wall of the feeding end of the preheating type feeding pipe 8. Namely, the air blower 12 directly extracts the hot air flow with residual heat from the discharging cavity 202 as pushing air flow for conveying the wet materials, on one hand, the effect of primary preheating is achieved on the wet materials, and the hot air flow in the air flow drying device can circularly flow, on the other hand, the air blower 12 extracts the air in the discharging cavity 202, so that a negative pressure environment is formed in the discharging cavity 202, the hot air flow in the heat exchange cavity 6 is accelerated to flow out, and the hot air flow flowing out of the heat exchange cavity 6 is beneficial to blow the dried materials of the cylindrical filter 3 on the side of the discharging cavity 202. In addition, the air flow environment in the air flow drying device can be optimized, and the efficient circulation flow of the hot air flow in the air flow drying device is facilitated.
It is further optimized in the above embodiment that the filter screen 15 is disposed in the discharging cavity 202, the filter screen 15 is disposed between the cylindrical filter 3 and the air inlet pipe 14, the filter screen 15 is disposed to prevent the dry material in the discharging cavity 202 from being sucked by the air inlet pipe 14, the bottom of the filter screen 15 is disposed away from the cylindrical filter 3 in an inclined manner, the wall of the drying box 2 is provided with the discharging port 16 communicated with the discharging cavity 202, the discharging port 16 is disposed between the cylindrical filter 3 and the filter screen 15, and the discharging port 16 extends to the bottom of the filter screen 15, so that the dry material intercepted by the filter screen 15 is facilitated to move to the discharging port 16 below.
It is further optimized in the above embodiment that a plurality of heat exchange fins 11 are arranged on the high-temperature preheating pipe section 801 at intervals along the length direction and connected, holes through which the high-temperature preheating pipe section 801 passes are formed in the heat exchange fins 11, and the heat exchange fins 11 are in interference fit with or welded with the high-temperature preheating pipe so as to ensure the heat transfer effect of the heat exchange fins 11 and the high-temperature preheating pipe section 801, namely, the heat exchange area of the high-temperature preheating pipe section 801 is greatly increased through the plurality of heat exchange fins 11, so that hot air in the heat exchange cavity 6 can be rapidly released, the high-temperature preheating pipe section 801 is rapidly heated, the temperature of wet materials conveyed inside the high-temperature preheating pipe section 801 is increased, and preliminary evaporation drying is performed. The hot air flow is fast heat-released, so that the water vapor carried by the hot air flow is beneficial to quickly forming condensation on the surfaces of the heat exchange fins 11 and the high-temperature preheating pipe section 801, namely, the dehumidification effect of the hot air flow is beneficial to enhancing, and the drying of the dried materials in the discharging cavity 202 is beneficial to maintaining.
And, preheat formula inlet pipe 8 is equipped with a plurality ofly in vertical interval, and a plurality of high temperature preheat tube sections 801 are connected through a plurality of heat transfer fins 11, and the moist material is fed through a plurality of preheat formula inlet pipe 8 to do benefit to the heat exchange efficiency of heat exchange component and the hot gas flow that heat transfer chamber 6 comprises high temperature preheat tube sections 801 and heat transfer fins 11, do benefit to the ejection of compact temperature that improves preheat formula inlet pipe 8 promptly, and do benefit to the drying to the hot gas flow that is discharged by ejection of compact chamber 202.
In addition, a plurality of extended-range drying channels 17 are arranged in the drying cavity 201, the extended-range drying channels 17 are of a wave-shaped structure, the valley peaks and the valley bottoms of the extended-range drying channels 17 are vertically distributed, the discharging end of the preheating type feeding pipe 8 is located on the side face of the corresponding extended-range drying channel 17, the air blowing port of the hot air box 1 is located at the front end of the plurality of extended-range drying channels 17, namely, hot air flow output by the hot air box 1 is blown in from the front end of the extended-range drying channels 17, wet materials which are output by the preheating type feeding pipe 8 and are preheated twice are input from one side of the front end of the extended-range drying channels 17, and the hot air flow carries the wet materials to move backwards in the extended-range drying channels 17.
The wave-shaped extended-range drying channel 17 contributes to the moist material being sufficiently heated and dried, since the length of the extended-range drying channel 17 is substantially longer than that of a straight channel, in the case of the same length of the drying box 2. In addition, as the peaks and the bottoms of the extended-range drying channels 17 are vertically distributed, when the wet materials reach the bottoms, the wet materials with relatively high drying degree and relatively small weight can be preferentially carried by the hot air flow to move towards the backward peaks, so that the multiple screening of the drying degree of the wet materials is realized, and the uniform drying degree of the dry materials discharged from the extended-range drying channels 17 is ensured.
The extended-range drying channel 17 comprises a pair of vertically spaced guide plates 1701 which are wavy.
Wherein, the guide plates 1701 of a plurality of extended-range drying channels 17 located below are connected through the support rods 18 and fixedly arranged in the drying cavity 201, the guide plates 1701 of a plurality of extended-range drying channels 17 located above are connected through the adjustment rods 19, the support rods 18 and the adjustment rods 19 are arranged on two sides of the extended-range drying channels 17, the jack for the adjustment rods 19 to pass through is arranged on the top of the drying box 2, and the lifting adjusting mechanism 20 connected with the adjustment rods 19 is arranged on the top of the drying box 2.
The adjusting rod 19 is driven to move up and down by the lifting adjusting mechanism 20, so that the guide plate 1701 which is positioned above or below in each extended-range drying channel 17 is adjusted to move up and down, and the capacity and the vertical width of the extended-range drying channel 17 are adjusted to adapt to different production requirements.
Preferably, the deflector 1701 positioned below the extended-range drying channel 17 is connected with the supporting rod 18, and the discharge end of the preheating type feeding pipe 8 is horizontal or inclined downwards. The moist material output by the preheating type feeding pipe 8 is directly transferred to the deflector 1701 positioned below in the extended-range drying channel 17, so that the moist material on the deflector 1701 can move to the other side of the extended-range drying channel 17 under the pushing of the moist material subsequently input by the preheating type feeding pipe 8, thereby being beneficial to the relatively uniform distribution of the moist material on the two sides of the extended-range drying channel 17. While if the deflector 1701 of the extended-range drying tunnel 17 located below is provided to be height-adjustable, it is difficult to maintain the above effect.
The lifting adjusting mechanism 20 comprises a linkage frame 2001 and a lifting driving cylinder 2002, the linkage frame 2001 is located above the drying oven 2 and is connected with a plurality of adjusting rods 19 on two sides, the lifting driving cylinder 2002 is arranged at the top of the drying oven 2 and is connected with the linkage frame 2001, one or more lifting driving cylinders 2002 are arranged, the linkage frame 2001 is driven to lift through the lifting driving cylinder 2002, the linkage frame 2001 drives the plurality of adjusting rods 19 to lift synchronously, and therefore the guide plates 1701 of each range-extending drying channel 17 located above are lifted synchronously.
Wherein, a passing gap for the passage of the blocking convex strips 5 is formed between the cylindrical filter 3 and the walls of the drying box 2 above and below the cylindrical filter 3, and a plurality of blocking convex strips 5 sequentially enter and leave the discharging cavity 202 along with the rotation of the cylindrical filter 3.
Preferably, the passage gap is curved coaxially with the cylindrical filter 3, which has the advantage that the passage gap, which is curved, can cooperate with the cylindrical filter 3 over a longer distance, increasing the resistance of the hot gas flow from the passage gap into the discharge chamber 202, i.e. helping to prevent the hot gas flow from flowing directly into the discharge chamber 202 without passing through the cylindrical filter 3.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (10)
1. The utility model provides a regenerative air flow drying device, includes drying cabinet (2) that one end is connected with hot-blast case (1), its characterized in that still includes:
The cylindrical filter (3) is rotatably arranged on the drying box (2), the cylindrical filter (3) penetrates through the side walls of two sides of the drying box (2) and separates the interior of the drying box (2) to form a drying cavity (201) and a discharging cavity (202), and a driver (4) for driving the cylindrical filter (3) to rotate is arranged on the drying box (2);
Wherein, a plurality of partition convex strips (5) are circumferentially arranged on the outer side wall of the cylindrical filter (3) so as to facilitate the dry raw materials intercepted by the cylindrical filter (3) to be transferred to a discharging cavity (202) along with the rotation of the cylindrical filter (3);
the inside of the cylindrical filter (3) is provided with a heat exchange cavity (6), and two ends of the heat exchange cavity (6) are provided with round cover plates (7) which are rotationally and hermetically connected with the cavity walls of the heat exchange cavity;
A preheating type feeding pipe (8) which is provided with a high-temperature preheating pipe section (801) passing through the heat exchange cavity (6) and the round cover plates (7) at two ends and a low-temperature preheating pipe section (802) passing through the discharging cavity (202), wherein the preheating type feeding pipe (8) is communicated with the drying cavity (201) near the discharging end of the high-temperature preheating pipe section (801);
the flow gathering baffle (9) is arranged in the heat exchange cavity (6) and connected with the round cover plates (7) at two ends, and the flow gathering baffle (9) is positioned between the discharging cavity (202) and the high-temperature preheating pipe section (801);
Wherein, the flow collecting baffle plate (9) is provided with a flow collecting hole (901) for enabling the air flow to intensively blow to the discharging cavity (202) side of the cylindrical filter (3);
The bottom of the flow gathering baffle plate (9) is bent towards the lower part of the high-temperature preheating pipe section (801) to form a water gathering groove (902) for collecting condensed water, and a drain pipe (10) communicated with the water gathering groove (902) is arranged on the circular cover plate (7).
2. The backheating type pneumatic drying device according to claim 1, wherein a plurality of heat exchange fins (11) are arranged on the high-temperature preheating pipe section (801) at intervals along the length direction for connection, and the flow gathering baffle (9) is positioned between the heat exchange fins (11) and the discharging cavity.
3. A regenerative pneumatic drying device according to claim 2, wherein a plurality of preheating pipes (8) are vertically arranged at intervals, and a plurality of high-temperature preheating pipe sections (801) are connected through a plurality of heat exchange fins (11).
4. The backheating type pneumatic drying device according to claim 1, further comprising a blower (12) and a feeding hopper (13), wherein an air inlet of the blower (12) is communicated with the discharging cavity (202) through an air inlet pipe (14), an air outlet of the blower (12) is communicated with a feeding end of the preheating type feeding pipe (8) close to the low-temperature preheating pipe section (802), and the feeding hopper (13) is arranged on a side wall of the feeding end of the preheating type feeding pipe (8) and is communicated with the preheating type feeding pipe (8).
5. The backheating type pneumatic drying device according to claim 4, wherein a filter screen (15) is arranged in the discharging cavity (202), the filter screen (15) is located between the cylindrical filter (3) and the air inlet pipe (14), a discharging hole (16) communicated with the discharging cavity (202) is formed in the wall of the drying box (2), and the discharging hole (16) is located between the cylindrical filter (3) and the filter screen (15).
6. A regenerative pneumatic drying device according to claim 5, wherein the bottom of the screen (15) is inclined away from the cylindrical filter (3), and the outlet (16) extends to the bottom of the screen (15).
7. A regenerative air dryer as claimed in claim 3, wherein a plurality of extended-range drying channels (17) are arranged in the drying chamber (201), the extended-range drying channels (17) are in a wave-shaped structure, and the peaks and bottoms of the extended-range drying channels (17) are vertically distributed;
the discharge end of the preheating type feeding pipe (8) is positioned on the side surface of the corresponding increase Cheng Gansao channel (17), and the air blowing opening of the hot air box (1) is positioned at the front ends of a plurality of increase range drying channels (17).
8. A regenerative pneumatic drying device according to claim 7, wherein the Cheng Gansao channels (17) comprise a pair of vertically spaced apart wave-shaped baffles (1701).
9. The backheating type pneumatic drying device according to claim 8, wherein a plurality of guide plates (1701) positioned below the heating Cheng Gansao channels (17) are connected through support rods (18) and fixedly arranged in the drying cavity (201), the guide plates (1701) positioned above the heating Cheng Gansao channels (17) are connected through adjustment rods (19), the support rods (18) and the adjustment rods (19) are arranged on two sides of the heating Cheng Gansao channels (17), insertion holes for the adjustment rods (19) to pass through are formed in the top of the drying box (2), and a lifting adjusting mechanism (20) connected with the adjustment rods (19) is arranged on the top of the drying box (2).
10. A regenerative air dryer as claimed in claim 9, wherein said elevation adjustment mechanism (20) comprises a linkage frame (2001) and an elevation driving cylinder (2002), said elevation driving cylinder (2002) is disposed at the top of the drying oven (2) and connected to said linkage frame (2001), said linkage frame (2001) being connected to a plurality of said adjustment rods (19) on both sides.
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| CN202410452030.XA CN118044635B (en) | 2024-04-16 | 2024-04-16 | Regenerative air flow drying device |
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| CN202410452030.XA CN118044635B (en) | 2024-04-16 | 2024-04-16 | Regenerative air flow drying device |
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