CN212538473U

CN212538473U - Vertical drying system

Info

Publication number: CN212538473U
Application number: CN202021273748.6U
Authority: CN
Inventors: 徐静; 马海乐; 周存山; 黄文攀
Original assignee: Myande Group Co Ltd
Current assignee: Myande Group Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-12
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a vertical drying system, wherein the inner cavity of a vertical infrared dryer is sequentially provided with a pre-drying layer, a drying layer and a cooling layer, the side wall of a wind chamber of a pre-drying interlayer is provided with a pre-drying air inlet, and the upper part of the cylinder wall of the pre-drying layer or the top of the cylinder body is provided with a pre-drying layer air outlet; a drying layer air inlet is formed in the side wall of the drying layer air chamber, and a drying layer air outlet is formed in the upper part of the cylinder wall of the drying layer; a cooling air inlet is arranged on the side wall of the cooling interlayer air chamber, and a cooling air outlet is arranged at the upper part of the cylinder wall of the cooling layer; the air outlet of the drying layer is sequentially connected with the inlet of the first drying layer saxolone and the inlet of the first pre-drying blower, and the outlet of the first pre-drying blower is connected with the first pre-drying air inlet through the first pre-drying heater; and the outlet of the second pre-drying air feeder is connected with a second pre-drying air inlet through a second pre-drying heater. This vertical drying system need not the returning charge, avoids repeated drying, and whole energy consumption is low.

Description

Vertical drying system

Technical Field

The utility model relates to a desiccator especially relates to a vertical drying system, can be used to the drying of materials such as granule material, fruit vegetables, belongs to drying equipment technical field.

Background

In the prior art, a fluidized bed dryer, an active drying tower, a tubular dryer, a combined dryer and the like are generally adopted for drying the fermented materials. Because fresh materials such as bean pulp and the like are wet and have high viscosity, the existing vertical dryer can be dried in the dryer after partial dry materials are mixed in the bean pulp, otherwise the bean pulp is easy to agglomerate and stick in the process of stirring in the dryer, so that the mixed finished dry materials are repeatedly dried in the dryer, and the color and the quality of the bean pulp are seriously influenced due to repeated high-temperature baking, the original nutritional ingredients are damaged, and great loss is caused to users.

Secondly, the existing vertical dryer adopts rotary valve blanking, so that the first-in first-out of the materials is difficult to ensure, the drying time of the materials is also long or short, and the moisture content and the quality are uneven.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a vertical drying system, need not the returning charge, avoid repeated drying, whole energy consumption is low.

In order to solve the technical problem, the utility model discloses a vertical drying system, including vertical infrared drying machine, the barrel inner chamber of vertical infrared drying machine is equipped with predrying layer, drying layer and cooling layer that are formed by the separation of intermediate layer plenum in proper order from top to bottom, the intermediate layer plenum lateral wall of predrying layer is equipped with predrying air intake, the section of thick bamboo wall upper portion or the barrel top of predrying layer is equipped with predrying layer air outlet; the side wall of the interlayer air chamber of the drying layer is provided with a drying layer air inlet, and the upper part of the cylinder wall of the drying layer is provided with a drying layer air outlet; a cooling air inlet is formed in the side wall of the interlayer air chamber of the cooling layer, and a cooling air outlet is formed in the upper part of the cylinder wall of the cooling layer; the air outlet of the drying layer is connected with the inlet of the drying layer salon, the air outlet of the drying layer salon is connected with the inlet of the first pre-drying blower, and the outlet of the first pre-drying blower is connected with the pre-drying air inlet of the first layer through the first pre-drying heater; the cooling air outlet is connected with the inlet of the cooling air sand dragon, the air outlet of the cooling air sand dragon is connected with the inlet of the pre-drying air feeder II, and the outlet of the pre-drying air feeder II is connected with the pre-drying air inlet of the second layer through the pre-drying heater II.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: the materials sequentially flow through the pre-drying layer, the drying layer and the cooling layer, hot air exhausted from an air outlet of the drying layer is dedusted by a sand-lock of the drying layer, is exhausted by the first pre-drying air blower, is heated by the first pre-drying heater and then enters the pre-drying air inlet of the top layer, so that the complete recycling of the exhaust waste heat of the drying layer is realized, and the energy consumption of the top pre-drying layer is greatly reduced. The cooling air discharged from the cooling air outlet has waste heat, is dedusted by the cooling air blower II, is pumped out by the pre-drying air feeder II, is heated by the pre-drying heater II and is sent into the pre-drying air inlet of the second layer, so that the waste heat of the exhaust air of the cooling layer is completely recycled, and the energy consumption of the second pre-drying layer is greatly reduced.

As an improvement of the utility model, the cooling air inlet is connected with the outlet of the cooling blower, and the inlet of the cooling blower is communicated with the atmosphere through the first air filter; the inlet of the drying layer blower is communicated with the atmosphere through an air filter II, and the outlet of the drying layer blower is connected with the air inlet of the drying layer through a drying layer heater; each predrying layer air outlet links to each other with the entry of predrying husky dragon respectively, and the air outlet of each predrying husky dragon links to each other with the entry of sack cleaner, the export of sack cleaner communicates with each other with the atmosphere through the draught fan. After being filtered by the first air filter, the fresh air is sent into the interlayer air chamber of the cooling layer by the cooling blower; after being filtered by the air filter II, the fresh air is sent into the interlayer air chamber of the drying layer by the drying layer air feeder; the exhaust air of the pre-drying layer has higher moisture content, and is discharged to the atmosphere after being respectively discharged from an air outlet of the pre-drying layer and sequentially subjected to secondary dust removal by a pre-drying sand-acrylic and a bag-type dust remover under the suction action of a draught fan.

As a further improvement of the utility model, a main shaft is arranged along the axis of the cylinder body of the vertical infrared dryer, and the top of each interlayer air chamber is respectively provided with a sieve plate; the top of each pre-drying layer is uniformly provided with infrared radiation drying lamps, the pre-drying layer positioned at the top is provided with a feeding chute, the upper part of the cylinder wall of each pre-drying layer is provided with a pre-drying overflow port, and each pre-drying overflow port is connected with a feeding hole on the cylinder wall of the next layer through a pre-drying chute and a pre-drying air seal device; a drying layer blanking auger which is butted with a discharge port of a sieve plate of the drying layer is arranged in an interlayer air chamber of the drying layer, and an outlet of the drying layer blanking auger is positioned outside the cylinder body and is connected with a feed port on the cylinder wall of the cooling layer through a drying layer slide pipe; a cooling layer blanking auger butted with a discharge port of a screen plate of the cooling layer is arranged in an interlayer air chamber of the cooling layer; rake type stirring fins are arranged above the sieve plates of the pre-drying layers respectively, scraping stirring fins are arranged above the sieve plates of the drying layers and the cooling layers respectively, and the rake type stirring fins and the scraping stirring fins are fixed on the main shaft respectively. Moist material falls into on the sieve of top predrying layer from the feeding elephant trunk, the main shaft drives the rotation of material harrow formula stirring wing, the material is spread out on the sieve to material harrow formula stirring wing, preheat the wind and get into the intermediate layer plenum on predrying layer from the predrying air intake, upwards blow off from the wind hole on the sieve, with the abundant heat transfer of material direct contact, carry out predrying to the material, the infrared radiation drying lamp at predrying layer top can carry out radiant heating to the material, make the material fully predrying, preheat the wind after carrying out heat and moisture exchange with the material and discharge from the predrying layer air outlet at barrel top. The specific gravity of wet materials is high, the specific gravity of dry materials is low, the lighter dry materials slowly float on the upper layer under the action of stirring and wind power, and when the material layer height exceeds the height of the overflow port, the lighter dry materials flow out of the pre-drying overflow port and enter the pre-drying layer on the next layer through the pre-drying chute and the pre-drying air seal machine for pre-drying. The number of layers of the pre-drying layer is set according to the actual condition of the material, multiple layers of pre-drying layers can be set for the material with high moisture content, the material which is dried firstly overflows and enters the next layer to be dried again, and dry materials do not need to be added into the raw materials. And the wet material just entering falls on the material which is already preliminarily dried, so that the chance of sticking on the sieve plate is reduced. The material after predrying falls on a sieve plate of the drying layer, and is uniformly spread and stirred by a stirring wing of the drying layer; hot air enters an interlayer air chamber of the drying layer from a drying air inlet, is blown out upwards from air holes in the sieve plate, is in direct contact with the materials to fully exchange heat, dries the materials, and discharges the hot air after heat-moisture exchange with the materials from an air outlet of the drying layer at the top of the cylinder body; the dried material is discharged by a drying layer discharging auger, falls onto a sieve plate of a cooling layer through a drying layer chute, and is uniformly spread and stirred by a cooling layer stirring fin; cooling air enters the interlayer air chamber of the cooling layer from the cooling air inlet, is blown out upwards from air holes on the sieve plate to cool the materials, and the heated cooling air is discharged from the cooling layer air outlet at the top of the cylinder body; and discharging the cooled material by a cooling layer discharging auger. This vertical drying machine need not to adopt finished product drier and fresh wet material to mix mutually, avoids the repeated drying of drier, and drier overflows earlier during predrying, realizes the first-in first-out of material, guarantees that the drying time of material is the same, and ejection of compact quality is high and even.

As a further improvement of the utility model, vertically extending straight holes are uniformly distributed on the sieve plate of the drying layer, the bottom wall of the interlayer air chamber of the drying layer is provided with a drying air chamber discharge opening, and a drying layer air seal device discharging to the cooling layer is arranged below the drying air chamber discharge opening; and a drying air chamber cleaning scraper is arranged above the bottom wall of the interlayer air chamber of the drying layer and is fixed on the main shaft. The material that gets into the drying layer is dry relatively, and the proportion becomes light, and viscidity diminishes, adopts straight hole can reduce hot-blast air supply resistance, is favorable to blowing the material up, and hot-blast wind-force can prevent the material to fall into straight hole in, increases the heating strength to the material, improves drying efficiency. A small amount of materials leaking into the drying layer interlayer air chamber are scraped into a discharge opening of the drying air chamber by a cleaning scraper of the drying air chamber and are discharged by a drying layer air seal machine, so that the drying layer interlayer air chamber has a self-cleaning function.

As a further improvement, the dry layer air intake is equipped with the dry layer air inlet shutter that is higher than the dry plenum and cleans the scraper outer fringe, each louver of dry layer air inlet shutter all cleans the direction of advance slope of scraper to the dry plenum. When the cleaning scraper of the drying air chamber rotates, materials are easy to splash upwards under the action of centrifugal force, once the materials enter the hot air inlet duct, the materials are difficult to clean, the ventilation section is easy to reduce after the materials run for a long time, and the accumulated materials are easy to mildew when the drying air chamber is stopped for a long time, so that the pollution to a system is caused; the drying layer air inlet shutter is arranged to prevent materials from entering the hot air inlet duct.

As a further improvement of the utility model, vertically extending straight holes are uniformly distributed on the sieve plate of the cooling layer, the bottom wall of the interlayer air chamber of the cooling layer is provided with a cooling interlayer discharge opening, and a cooling layer air seal device is arranged below the cooling interlayer discharge opening; and a cooling air chamber cleaning scraper is arranged above the bottom wall of the interlayer air chamber of the cooling layer and is fixed on the main shaft. The air supply resistance of cooling air can be reduced by adopting the straight holes, the material can be blown up, the material can be prevented from falling into the straight holes by the wind power of the cooling air, the cooling strength of the material is enhanced, and the cooling efficiency is improved. A small amount of materials leaking into the interlayer air chamber of the cooling layer are scraped into a discharge opening of the cooling interlayer by a cleaning scraper of the cooling air chamber and are discharged by an air seal device of the cooling layer, so that the interlayer air chamber of the cooling layer has a self-cleaning function.

As a further improvement, the cooling layer air intake is equipped with the cooling layer air inlet shutter that is higher than the cooling plenum and cleans the scraper outer fringe, each louver of cooling layer air inlet shutter all cleans the direction of advance slope of scraper to the cooling plenum. The air inlet shutter of the cooling layer can prevent materials from entering a hot air inlet channel, and the leaked materials are prevented from being retained in the air supply system.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a flow chart of the vertical drying system of the present invention.

Fig. 2 is a front view of the neutral infrared dryer of fig. 1.

Fig. 3 is a perspective view of a material rake type stirring fin in the vertical infrared dryer.

Fig. 4 is a front view of a drying layer and a cooling layer in the vertical infrared dryer.

Fig. 5 is a cross-sectional view taken along a-a in fig. 4.

In the figure: 1. a barrel; 2. a main shaft; 2a. a drive mechanism; 3a, predrying an air inlet; 3b, air outlets of the pre-drying layer; 3c, feeding elephant trunk; 3c1, a breaking device; 3d, pre-drying an overflow port; pre-drying the chute; 3e1. predrying the air seal; 3f, a rake type stirring fin; 3g. an infrared radiation drying lamp; 4a, a drying layer air inlet; 4a1. dry layer air inlet shutter; 4b, air outlet of the drying layer; 4c, a dry layer blanking auger; 4c1, drying the layer chute; 4d, drying layer stirring fins; 4e, cleaning a scraper of the drying air chamber; 4f, a discharge opening of the drying air chamber; 4g, a dry layer air seal machine; 5a, a cooling air inlet; 5a1. Cooling layer air intake louver; 5b, a cooling air outlet; 5c, a cooling layer blanking auger; 5d, cooling layer stirring fins; 5e, cleaning a scraper of the cooling air chamber; 5f, cooling layer air seal machine; s1, cooling the sand blast Kelong; s2, drying the layer of the salon; s3, predrying the salon; s4, a bag-type dust collector; F1. a first pre-drying blower; F2. a second pre-drying blower; F3. a drying layer blower; F4. a cooling blower; F5. an induced draft fan; H1. pre-drying the heater I; H2. a second predrying heater; H3. a dry layer heater; l1, a first air filter; and L2, an air filter II.

Detailed Description

As shown in fig. 1, the vertical drying system of the present invention comprises a vertical infrared dryer, a pre-drying layer, a drying layer and a cooling layer separated by an interlayer air chamber are sequentially arranged in an inner cavity of a cylinder of the vertical infrared dryer from top to bottom, a pre-drying air inlet 3a is arranged on a sidewall of the interlayer air chamber of the pre-drying layer, and a pre-drying air outlet 3b is arranged on an upper portion of a cylinder wall of the pre-drying layer or on a top of the cylinder; a drying layer air inlet 4a is formed in the side wall of the interlayer air chamber of the drying layer, and a drying layer air outlet 4b is formed in the upper part of the cylinder wall of the drying layer; the side wall of the interlayer air chamber of the cooling layer is provided with a cooling air inlet 5a, and the upper part of the cylinder wall of the cooling layer is provided with a cooling air outlet 5b.

The inlet of the drying layer blower F3 is communicated with the atmosphere through an air filter II L2, and the outlet of the drying layer blower F3 is connected with the drying layer air inlet 4a through a drying layer heater H3; the drying layer air outlet 4b is connected with an inlet of a drying layer salon S2, an air outlet of the drying layer salon S2 is connected with an inlet of a pre-drying blower F1, and an outlet of the pre-drying blower F1 is connected with a pre-drying air inlet 3a of the first layer through a pre-drying heater H1.

The cooling air inlet 5a is connected with the outlet of a cooling blower F4, and the inlet of a cooling blower F4 is communicated with the atmosphere through an air filter L1; the cooling air outlet 5b is connected with the inlet of the cooling air sand dragon S1, the air outlet of the cooling air sand dragon S1 is connected with the inlet of the second pre-drying blower F2, and the outlet of the second pre-drying blower F2 is connected with the pre-drying air inlet 3a of the second layer through a second pre-drying heater H2. The air outlets 3b of the pre-drying layers are respectively connected with the inlet of a pre-drying sand-dragon S3, the air outlet of each pre-drying sand-dragon S3 is connected with the inlet of a bag-type dust remover S4, and the outlet of the bag-type dust remover S4 is communicated with the atmosphere through an induced draft fan F5.

The materials flow through the pre-drying layer, the drying layer and the cooling layer in sequence, and fresh air is sent into an interlayer air chamber of the drying layer by a drying layer air feeder F3 after being filtered by an air filter II L2; the hot air exhausted from the air outlet 4b of the drying layer is dedusted by the salon S2 of the drying layer, is pumped out by the pre-drying blower F1, is heated by the pre-drying heater H1 and enters the pre-drying air inlet 3a at the top layer, so that the exhaust waste heat of the drying layer is completely recycled, and the energy consumption of the pre-drying layer at the top part is greatly reduced.

After being filtered by an air filter I L1, fresh air is sent into a sandwich air chamber of a cooling layer by a cooling blower F4; the cooling air discharged from the cooling air outlet 5b carries residual heat, is dedusted by a cooling air sand Kelon S1, is pumped out by a pre-drying blower II F2, is heated by a pre-drying heater II H2, and is sent into a pre-drying air inlet 3a of the second layer, so that the complete recycling of the residual heat of the discharged air of the cooling layer is realized, and the energy consumption of the second pre-drying layer is greatly reduced. The moisture content of the exhaust air of the pre-drying layer is high, and the exhaust air is discharged from the air outlet 3b of the pre-drying layer respectively, and then is subjected to secondary dust removal by a pre-drying sand-acrylic dragon S3 and a bag-type dust remover S4 in sequence under the suction action of a draught fan F5, and then is discharged to the atmosphere.

As shown in fig. 2 to 5, the vertical infrared dryer comprises a cylinder 1, a main shaft 2 is arranged along the axis of the cylinder, a pre-drying layer, a drying layer and a cooling layer which are separated by interlayer air chambers are sequentially arranged in the inner cavity of the cylinder from top to bottom, and a sieve plate is respectively arranged at the top of each interlayer air chamber; the top of the pre-drying layer is respectively and uniformly provided with infrared radiation drying lamps 3g, the side wall of an interlayer air chamber of the pre-drying layer is provided with a pre-drying air inlet 3a, and the upper part of the cylinder wall of the pre-drying layer or the top of the cylinder body 1 is provided with a pre-drying layer air outlet 3 b; the pre-drying layer at the top is provided with a feeding slide pipe 3c, the upper part of the cylinder wall of each pre-drying layer is respectively provided with a pre-drying overflow port 3d, and each pre-drying overflow port 3d is respectively connected with a feeding hole on the cylinder wall of the next layer through a pre-drying slide pipe 3e and a pre-drying air seal machine 3e 1; a drying layer air inlet 4a is formed in the side wall of the interlayer air chamber of the drying layer, a drying layer air outlet 4b is formed in the upper portion of the cylinder wall of the drying layer, a drying layer blanking auger 4c which is in butt joint with a drying layer sieve plate discharge port is installed in the interlayer air chamber of the drying layer, and an outlet of the drying layer blanking auger 4c is located on the outer side of the cylinder and is connected with a feed port in the cylinder wall of the cooling layer through a drying layer slide pipe 4c 1; a cooling air inlet 5a is arranged on the side wall of the interlayer air chamber of the cooling layer, a cooling air outlet 5b is arranged on the upper part of the cylinder wall of the cooling layer, and a cooling layer blanking auger 5c butted with a discharge port of a sieve plate of the cooling layer is arranged in the interlayer air chamber of the cooling layer; rake type stirring fins 3f are respectively arranged above the sieve plates of the pre-drying layers, scraping stirring fins are respectively arranged above the sieve plates of the drying layers and the cooling layers, and the rake type stirring fins 3f and the scraping stirring fins are respectively fixed on the main shaft 2.

Moist material falls into on the sieve of top predrying layer from feeding elephant trunk 3c, actuating mechanism 2a drive main shaft 2 is rotatory, main shaft 2 drives the rotation of harrow formula stirring wing 3f, harrow formula stirring wing 3f spreads the material on the sieve, preheat the wind and get into the intermediate layer plenum on predrying layer from predrying air intake 3a, blow off from the wind hole on the sieve upwards, with the abundant heat transfer of material direct contact, predry the material, the infrared radiation drying lamp 3g at predrying layer top can carry out radiant heating to the material, make the abundant predrying of material, preheat the wind after carrying out the heat and moisture exchange with the material and discharge from the predrying layer air outlet 3b at barrel top. The specific gravity of the wet materials is high, the specific gravity of the dry materials is low, the lighter dry materials slowly float on the upper layer under the action of stirring and wind, and when the material layer height exceeds the overflow port height, the lighter dry materials flow out of the pre-drying overflow port 3d and enter the pre-drying layer on the next layer for pre-drying through the pre-drying chute 3e and the pre-drying air seal machine 3e1. The number of layers of the pre-drying layer is set according to the actual condition of the material, multiple layers of pre-drying layers can be set for the material with high moisture content, the material which is dried firstly overflows and enters the next layer to be dried again, and dry materials do not need to be added into the raw materials. And the wet material just entering falls on the material which is already preliminarily dried, so that the chance of sticking on the sieve plate is reduced.

The pre-dried material falls on a sieve plate of the drying layer, and is uniformly spread and stirred by a stirring fin 4d of the drying layer; hot air enters the interlayer air chamber of the drying layer from the drying air inlet, is blown out upwards from the air holes on the sieve plate, is in direct contact with the materials to fully exchange heat, dries the materials, and discharges the hot air after heat-moisture exchange with the materials from the air outlet 4b of the drying layer at the top of the cylinder body; the dry material is discharged by a dry layer discharging auger 4c, falls onto a sieve plate of a cooling layer through a dry layer chute 4c1, and is uniformly spread and stirred by a cooling layer stirring fin 5 d; cooling air enters the interlayer air chamber of the cooling layer from the cooling air inlet 5a, is blown out upwards from air holes on the sieve plate to cool the materials, and the heated cooling air is discharged from the air outlet of the cooling layer at the top of the cylinder body; the cooled material is discharged by a cooling layer blanking auger 5c.

The outlet of the feed chute 3c is provided with a breaker 3c1. Fresh and wet materials are firstly scattered by the scattering device 3c1, the conglomerate of the materials are crushed, and then are spread by the rake type stirring wings 3f in a rotating way, so that the wet materials are uniformly spread on the sieve plate for pre-drying.

As shown in fig. 4 and 5, vertically extending straight holes are uniformly distributed on a sieve plate of the drying layer, a drying air chamber discharge opening 4f is formed in the bottom wall of an interlayer air chamber of the drying layer, and a drying layer air seal device 4g for discharging materials to the cooling layer is arranged below the drying air chamber discharge opening 4 f; and a drying air chamber cleaning scraper 4e is arranged above the bottom wall of the interlayer air chamber of the drying layer, and the drying air chamber cleaning scraper 4e is fixed on the main shaft 2. The material that gets into the drying layer is dry relatively, and the proportion becomes light, and viscidity diminishes, adopts straight hole can reduce hot-blast air supply resistance, is favorable to blowing the material up, and hot-blast wind-force can prevent the material to fall into straight hole in, increases the heating strength to the material, improves drying efficiency. A small amount of materials leaking into the drying layer interlayer air chamber are scraped into a drying air chamber discharge opening 4f by a drying air chamber cleaning scraper 4e and discharged by a drying layer air seal machine 4g, so that the drying layer interlayer air chamber has a self-cleaning function.

The drying layer air inlet 4a is provided with a drying layer air inlet shutter 4a1 which is higher than the outer edge of the drying air chamber cleaning scraper 4e, and each window blade of the drying layer air inlet shutter 4a1 inclines towards the advancing direction of the drying air chamber cleaning scraper 4e. When the drying air chamber cleaning scraper 4e rotates, materials are easy to splash upwards under the action of centrifugal force, once the materials enter the hot air inlet duct, the materials are difficult to clean, the ventilation section is easy to reduce after the materials run for a long time, and the stored materials are easy to mildew when the drying air chamber cleaning scraper stops for a long time, so that the pollution to a system is caused; the dry layer air inlet shutter 4a1 is arranged to prevent material from entering the hot air inlet duct.

Vertical extending straight holes are uniformly distributed on a sieve plate of the cooling layer, a cooling interlayer discharge opening 5f is formed in the bottom wall of an interlayer air chamber of the cooling layer, and a cooling layer air seal device 5g is arranged below the cooling interlayer discharge opening 5 f; a cooling air chamber cleaning scraper 5e is arranged above the bottom wall of the interlayer air chamber of the cooling layer, and the cooling air chamber cleaning scraper 5e is fixed on the main shaft 2. The air supply resistance of cooling air can be reduced by adopting the straight holes, the material can be blown up, the material can be prevented from falling into the straight holes by the wind power of the cooling air, the cooling strength of the material is enhanced, and the cooling efficiency is improved. A small amount of materials leaking into the interlayer air chamber of the cooling layer are scraped into a discharge opening 5f of the cooling interlayer by a cleaning scraper 5e of the cooling air chamber and discharged by an air seal device 5g of the cooling layer, so that the interlayer air chamber of the cooling layer has a self-cleaning function.

The air inlet of the cooling layer is provided with a cooling layer air inlet shutter 5a1 which is higher than the outer edge of the cooling air chamber cleaning scraper 5e, and each window blade of the cooling layer air inlet shutter 5a1 inclines towards the advancing direction of the cooling air chamber cleaning scraper 5e. The arrangement of the cooling layer air inlet shutter 5a1 can prevent materials from entering a hot air inlet channel, and prevent leaked materials from being retained in an air supply system.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims

1. The utility model provides a vertical drying system, includes vertical infrared drying machine, its characterized in that: the vertical infrared dryer is characterized in that a pre-drying layer, a drying layer and a cooling layer which are formed by separating an interlayer air chamber are sequentially arranged in an inner cavity of a cylinder body of the vertical infrared dryer from top to bottom, a pre-drying air inlet is formed in the side wall of the interlayer air chamber of the pre-drying layer, and a pre-drying layer air outlet is formed in the upper part of the cylinder wall of the pre-drying layer or the top of the cylinder body; the side wall of the interlayer air chamber of the drying layer is provided with a drying layer air inlet, and the upper part of the cylinder wall of the drying layer is provided with a drying layer air outlet; a cooling air inlet is formed in the side wall of the interlayer air chamber of the cooling layer, and a cooling air outlet is formed in the upper part of the cylinder wall of the cooling layer; the air outlet of the drying layer is connected with the inlet of the drying layer salon, the air outlet of the drying layer salon is connected with the inlet of the first pre-drying blower, and the outlet of the first pre-drying blower is connected with the pre-drying air inlet of the first layer through the first pre-drying heater; the cooling air outlet is connected with the inlet of the cooling air sand dragon, the air outlet of the cooling air sand dragon is connected with the inlet of the pre-drying air feeder II, and the outlet of the pre-drying air feeder II is connected with the pre-drying air inlet of the second layer through the pre-drying heater II.

2. The vertical drying system of claim 1, wherein: the inlet of the cooling air blower is connected with the outlet of the cooling air blower, and the inlet of the cooling air blower is communicated with the atmosphere through a first air filter; the inlet of the drying layer blower is communicated with the atmosphere through an air filter II, and the outlet of the drying layer blower is connected with the air inlet of the drying layer through a drying layer heater; each predrying layer air outlet links to each other with the entry of predrying husky dragon respectively, and the air outlet of each predrying husky dragon links to each other with the entry of sack cleaner, the export of sack cleaner communicates with each other with the atmosphere through the draught fan.

3. The vertical drying system of claim 1, wherein: a main shaft is arranged along the axis of the cylinder body of the vertical infrared dryer, and the top of each interlayer air chamber is provided with a sieve plate; the top of each pre-drying layer is uniformly provided with infrared radiation drying lamps, the pre-drying layer positioned at the top is provided with a feeding chute, the upper part of the cylinder wall of each pre-drying layer is provided with a pre-drying overflow port, and each pre-drying overflow port is connected with a feeding hole on the cylinder wall of the next layer through a pre-drying chute and a pre-drying air seal device; a drying layer blanking auger which is butted with a discharge port of a sieve plate of the drying layer is arranged in an interlayer air chamber of the drying layer, and an outlet of the drying layer blanking auger is positioned outside the cylinder body and is connected with a feed port on the cylinder wall of the cooling layer through a drying layer slide pipe; a cooling layer blanking auger butted with a discharge port of a screen plate of the cooling layer is arranged in an interlayer air chamber of the cooling layer; rake type stirring fins are arranged above the sieve plates of the pre-drying layers respectively, scraping stirring fins are arranged above the sieve plates of the drying layers and the cooling layers respectively, and the rake type stirring fins and the scraping stirring fins are fixed on the main shaft respectively.

4. The vertical drying system of claim 3, wherein: vertical extending straight holes are uniformly distributed on the sieve plate of the drying layer, a drying air chamber discharge opening is formed in the bottom wall of the interlayer air chamber of the drying layer, and a drying layer air seal machine discharging materials to the cooling layer is arranged below the drying air chamber discharge opening; and a drying air chamber cleaning scraper is arranged above the bottom wall of the interlayer air chamber of the drying layer and is fixed on the main shaft.

5. The vertical drying system according to claim 4, wherein: and the drying layer air inlet is provided with a drying layer air inlet shutter higher than the outer edge of the drying air chamber cleaning scraper, and each shutter of the drying layer air inlet shutter inclines towards the advancing direction of the drying air chamber cleaning scraper.

6. The vertical drying system of claim 5, wherein: vertical extending straight holes are uniformly distributed on the sieve plate of the cooling layer, a cooling interlayer discharge opening is formed in the bottom wall of the interlayer air chamber of the cooling layer, and a cooling layer air seal machine is arranged below the cooling interlayer discharge opening; and a cooling air chamber cleaning scraper is arranged above the bottom wall of the interlayer air chamber of the cooling layer and is fixed on the main shaft.

7. The vertical drying system of claim 6, wherein: and the air inlet of the cooling layer is provided with a cooling layer air inlet shutter higher than the outer edge of the cooling air chamber cleaning scraper, and each window leaf of the cooling layer air inlet shutter inclines towards the advancing direction of the cooling air chamber cleaning scraper.