阅读说明：本技术 热管式真空烘干塔 (Heat pipe type vacuum drying tower ) 是由 程长青 高书燕 于 2019-03-07 设计创作，主要内容包括：本发明一种热管式真空烘干塔包括干燥仓,排气装置,加热装置,关风器,支架,真空机组,排粮装置。排气装置和加热装置固定在干燥仓仓内；加热装置包括导热管,加热管；加热管包括金属管,导热工质,加热封头。热能通过热管式真空烘干塔的干燥仓内的加热装置给物料进行着导热加热,有加热条的加热器的导热加热面积增加了8—35倍,小面积的加热封头给导热工质传导足够的热量,导热工质在管内腔中进行着“液汽相变”的导热换热,导热工质携带的热能通过金属管的热传导、热辐射给干燥仓内的物料进行导热加热,外设的真空机组将排气装置内的湿气抽排出干燥仓,排粮装置将干燥仓内的物料均匀向下排放,提升物料干燥的效率和优化物料干燥效果。(The invention relates to a heat pipe type vacuum drying tower which comprises a drying bin, an exhaust device, a heating device, an air seal machine, a support, a vacuum unit and a grain discharging device. The exhaust device and the heating device are fixed in the drying bin; the heating device comprises a heat conduction pipe and a heating pipe; the heating pipe comprises a metal pipe, a heat conducting working medium and a heating end enclosure. Heat energy is carrying out heat conduction heating for the material through the heating device in the dry storehouse of heat pipe formula vacuum drying tower, the heat conduction heating area of the heater that has the heating strip has increased 8-35 times, the sufficient heat of heat conduction working medium conduction is given to the heating head of small size, the heat conduction working medium is carrying out the heat conduction heat transfer of "liquid vapour phase transition" in the pipe inner chamber, the heat conduction of heat energy that the heat conduction working medium carried is through the tubular metal resonator, heat radiation carries out heat conduction heating for the material in the dry storehouse, the dry storehouse of discharging is taken out to the moisture in the exhaust apparatus to the peripheral hardware vacuum unit, the even emission downwards of material in the grain discharging device will dry storehouse, promote the dry efficiency of material and optimize the dry effect of material.)

1. A heat pipe type vacuum drying tower, which comprises a drying bin (1), an exhaust device (2), a heating device (3) and an air seal machine (5),

the device comprises a bracket (7), a vacuum unit (8) and a grain discharging device (12); the method is characterized in that: the drying bin (1) comprises a bin body and a metal frame;

the drying bin (1) is arranged on the bracket (7), and the air seal machinery (5) is arranged on a feeding hole at the upper end of the drying bin (1) and a discharging hole at the lower end of the drying bin (1);

the exhaust device (2) comprises an exhaust groove (20), an exhaust vertical pipe (24) and a guide pipe (25); the body of the catheter (25) is sealed and airtight; the upper end of the exhaust vertical pipe (24) is fixed below the exhaust groove (20), and one end of the guide pipe (25) is fixedly connected to the exhaust groove (20);

the exhaust device (2) is fixed on a bin body in the drying bin (1) through a support frame (6), a conduit exhaust port (11) of the conduit (25) extends out of the drying bin (1), and the conduit exhaust port (11) outside the drying bin (1) is connected to a vacuum unit (8) through a gas guide pipe (4);

the heating device (3) comprises a heat conduction pipe (14) and a heating pipe (13); the lower ends of the heating pipes (13) are fixed on the heat conduction pipes (14), and the heating pipes (13) are fixedly connected with the adjacent heating pipes (13) through fixing strips (18);

the heating device (3) is fixed on the bin body in the drying bin (1) through a support frame (6); the joints of the heat energy outlet (9) and the heat energy inlet (10) of the heat conducting pipe (14) extending out of the drying bin (1) and the bin body of the drying bin (1) are fixedly sealed;

the exhaust stand pipe (24) of the exhaust device (2) is inserted between the heating pipe (13) of the heating device (3) and the heating pipe (13);

the heating pipe (13) comprises a metal pipe (26), a heat conducting working medium (16) and a heating end socket (17); the unclosed end of the metal pipe (26) is fixedly welded with the heating end enclosure (17) into a whole, the heat conducting working medium (16) conducts heat conduction and heat exchange of liquid-vapor phase change in the pipe inner cavity (15) after the metal pipe (26) and the heating end enclosure (17) are welded and fixed,

the heating end socket (17) comprises a heating plate (22), a heat-conducting medium (19) and a heater (21); the lower end of the heater (21) is fixed on the heating plate (22), and the heat-conducting medium (19) conducts heat conduction and heat exchange of 'liquid-vapor phase change' in the cavity between the heater (21) and the heating plate (22); the heat conduction and heat exchange area of the heater (21) with the heating strips (23) is 8-35 times larger than that of the heating plate (22);

a heater (21) of the heating end socket (17) conducts heat conduction heating on a heat conduction working medium (16) in a pipe inner cavity (15) of the heating pipe (13);

the boiling point temperature of the heat-conducting medium (19) in the heating end socket (17) is higher than that of the heat-conducting working medium (16) in the heating pipe (13);

the grain discharging device (12) is arranged below the heating device (3) in the drying bin (1);

the material to be dried enters the drying bin (1) through the air seal machine (5) on the feeding hole of the drying bin (1), heat energy carried by a medium conducts heat for the material through the heating device (3) in the drying bin (1), the grain discharging device (12) uniformly discharges the material in the drying bin (1) downwards, the vacuum unit (8) exhausts air in the drying bin (1) and moisture generated during drying of the material through the exhaust device (2), and the dried material is discharged out of the drying bin (1) through the air seal machine (5) on the discharging hole.

2. A heat pipe type vacuum drying tower according to claim 1, wherein: the heating devices (3) are 1-15 groups.

3. A heat pipe type vacuum drying tower according to claim 1, wherein: the distance between a heating tube (13) and an adjacent heating tube (13) is 50-180 mm.

4. A heat pipe type vacuum drying tower according to claim 1, wherein: the diameter of the heating tube (13) is 48-68 mm, and the length is 300-1800 mm.

5. A heat pipe type vacuum drying tower according to claim 1, wherein: the heating strip (23) is hollow.

Technical Field

The invention relates to a drying tower, in particular to a heat pipe type vacuum drying tower.

Background

The drying tower on the market at present mostly adopts high-temperature strong wind drying or low-temperature hot wind long-time drying, and the drying process flow is concurrent flow, mixed flow, countercurrent flow and combined hot wind for material drying. The hot air used by the drying tower is hot air which is formed by heat exchange of heat energy generated by external heating equipment through a heat exchanger, and the drying equipment has the defects of large volume, low heat energy utilization rate and large power consumption, and the dried material has poor quality and uneven drying moisture which influences material drying.

The heating pipe that the drying storehouse of novel drying tower on the existing market used is the gravity heating pipe, and when the gravity heating pipe was vertical placing, the evaporation zone of heating pipe was at condensation zone down last, and heat energy only can carry out the heat conduction heating through the metal face of heating pipe lower extreme tube head. The heat conducting area of the metal plate surface of the tube head at the lower end of the heating tube is limited, a small amount of heat is input into the metal plate surface of the tube head with a small heat exchange area, and the heat conducting working medium is limited in heating area, so that the heat conducting working medium is influenced to conduct heat on the heat conducting working medium in the tube cavity, the total quantity of the heated heat energy of the heat conducting working medium is insufficient, the heating tube cannot output a large amount of heat energy, the material cannot obtain enough heat energy, and the material drying efficiency of the drying tower is influenced.

Disclosure of Invention

The invention aims to solve the problem of overcoming the defects of the existing drying tower and provides a heat pipe type vacuum drying tower.

In order to achieve the purpose, the invention is realized by the following technical scheme: the heat pipe type vacuum drying tower comprises a drying bin, an exhaust device, a heating device, an air seal machine, a support, a vacuum unit and a grain discharging device.

The cross section of the drying bin is square or round; the two ends of the drying bin are in a conical shape. The length of the square drying cabin is 1800-3800 mm, the width is 1800-3800 mm, and the height is 6800-23800 mm. The diameter of the round drying cabin is 1800-3800 mm, and the height is 6800-23800 mm.

The drying bin comprises a bin body and a metal frame. The bin body is made of a metal plate with the thickness of 5-18 mm, and the metal frame is made of angle iron or channel steel. The metal frame is arranged outside the bin body, and the metal frame and the bin body are fixedly connected into a whole. The bin body is supported and fixed by the metal frame, the bin body is supported by the metal frame, the negative pressure resistance of the drying bin can be improved, and the bin body fixedly supported by the metal frame avoids invagination deformation caused by vacuum negative pressure of air pressure in the drying bin.

The drying bin is arranged on the bracket. The metal frame at the lower end of the drying bin is supported and fixed by a bracket.

The air seal machinery is arranged on the feeding hole at the upper end of the drying bin and the discharging hole at the lower end of the drying bin.

The air seal machine is important equipment in a pneumatic conveying and ventilating dust removal network, and has the main functions of continuously and timely discharging materials in the drying bin and simultaneously ensuring that the pressure in the drying bin is not exposed to a normal pressure environment; the air seal machine keeps dynamic sealing in the process of conveying materials into and out of the drying bin, and the air inflow of external air into the drying bin is reduced.

The heat insulation material arranged outside the drying bin plays a role in heat insulation, and the heat insulation layer is attached to the drying bin.

The exhaust device comprises an exhaust groove, an exhaust vertical pipe and a guide pipe; the body of the catheter is sealed airtight.

The upper end of the exhaust stand pipe is fixed below the exhaust groove, the upper end of the exhaust stand pipe and the exhaust groove are fixedly connected into a whole, and the upper end of the exhaust stand pipe and the inside of the exhaust groove are communicated and ventilated. The number of the vent stand pipes is 5-100, and the distance between the vent stand pipes is 580-800 mm.

One end of the guide pipe is fixedly connected to the exhaust groove, the guide pipe and the exhaust groove, and the interior of the exhaust vertical pipe is communicated and ventilated.

The exhaust device is fixed in the drying bin and is fixed on the bin body in the drying bin through a support frame, and an exhaust groove of the exhaust device is fixedly supported on the bin body of the drying bin by the support frame; the pipe gas vent of the pipe other end extends the drying storehouse, and the pipe that extends the drying storehouse body and the junction of the storehouse body in drying storehouse are fixed sealed, and the storehouse extends the body of the pipe in the drying storehouse body and the junction between the storehouse body in drying storehouse to be sealed airtight, and the pipe gas vent outside the drying storehouse passes through the air duct and connects on the vacuum unit.

The exhaust device is 1-15 groups.

The interior of the exhaust riser and the exhaust groove of the exhaust device in the drying bin forms a negative pressure state under the air exhaust action of the vacuum unit arranged on the air guide pipe, moisture generated in the drying process of materials in the drying bin enters the interior of the exhaust riser and the exhaust groove under the suction of the negative pressure in the exhaust riser and the exhaust groove, and the moisture entering the interior of the exhaust riser and the exhaust groove is exhausted out of the drying bin through the air guide pipe by the vacuum unit. Moisture generated in the drying process of the materials in the drying bin enters the guide pipe through the conveying of the exhaust vertical pipe and the exhaust groove, and the vacuum unit pumps the moisture in the guide pipe out of the drying bin.

The vacuum unit comprises a dust filtering device, a condenser and a vacuum pump; or a vacuum pump, a condenser; when the material without dust is dried, the dust filter device is not matched.

The dust in the moisture generated when the air and the materials in the drying bin are dried is filtered by the dust filtering device, and the dust in the moisture is filtered by the dust filtering device, so that the dust in the moisture is prevented from being adhered to the condenser, and the dust adhered to the condenser can influence the work of the condenser; after the condenser condenses the condensable gas of the moisture after filtering the dust into water, the condensed water is discharged out of the condenser by the drain valve, and the condensed gas is pumped out of the drying bin by the vacuum pump. A small volume of non-condensable gas remains; the power of the vacuum pump can be reduced by pumping the moisture with reduced volume, and the heat energy generated by condensation can be used again, so that the effects of waste heat utilization, energy conservation and emission reduction are achieved. The air pressure in the drying bin in the drying process is set according to the requirement of the drying temperature.

The heating device is fixed in the drying bin. The heating device is fixed on the drying bin body in the drying bin through the support frame, and the support frame is used for fixedly supporting the heating pipe of the heating device on the drying bin body; two ends of a heat conduction pipe of the heating device extend out of the drying bin; the joints of the heat energy outlet and the heat energy inlet of the heat conducting pipe extending out of the drying bin and the bin body of the drying bin are fixedly sealed.

The heating device is 1-15 groups.

The heating device comprises a heat conduction pipe and a heating pipe.

The exhaust stand pipe of the exhaust device is inserted between the heating pipe of the heating device and the heating pipe.

The heat conducting pipe is provided with a heat energy inlet and a heat energy outlet. The diameter of the heat conduction pipe is 48-68 mm, the length of the heat conduction pipe is 2000-28000 mm, and the length of the heat conduction pipe is set according to the requirement of the drying equipment. The heat conduction pipes are made of metal pipes, the heat conduction pipes are made into different arrangement shapes through pipe bending machines, and the arrangement shape of the heat conduction pipes after pipe bending is spiral or square.

The medium used for heat conduction in the heat conduction pipe of the heating device is water, or heat conduction oil, or steam.

The lower end of the heating pipe is fixed on the heat conduction pipe; the heating pipe stands on the heat conduction pipe, and the lower end face of the heating pipe is attached and fixed on the heat conduction pipe. The heating pipe is a single one which is fixedly welded outside the heat conducting pipe; the distance between the heating pipe and the adjacent heating pipe is 50-180 mm, and the heating pipes with the required number can be welded and fixed on the heat conduction pipe. The interior of the heating pipe is not communicated with the interior of the heat conducting pipe; when one heating pipe of the heating device is damaged to generate leakage, only the heating pipe does not work, and the use of the integral drying bin is not influenced.

The heating pipe and the adjacent heating pipe are fixedly connected by the fixing strip, the heating pipe supported by the fixing strip can improve the firmness, and the heating pipe is prevented from being askew when falling to the east and west under the flowing extrusion of materials.

The fixing strip is a steel bar with the thickness of 2-5 mm.

The diameter of the heating pipe is 48-68 mm, and the length is 300-1800 mm.

The heating pipe comprises a metal pipe, a heat conducting working medium and a heating end socket.

The metal pipe is a metal pipe with one closed end; the metal tube is a light tube or a metal tube with fins on the tube wall.

The unsealed end of the metal tube and the heating end enclosure are fixedly welded into a whole, and the inner cavity of the tube after the metal tube and the heating end enclosure are welded and fixed is sealed and airtight; the heat conducting working medium is arranged in the pipe inner cavity formed by fixedly welding the metal pipe and the heating end socket, and the heat conducting working medium conducts heat conducting and heat exchanging of liquid-vapor phase change in the pipe inner cavity formed by fixedly welding the metal pipe and the heating end socket.

The heat conducting working medium is water, ethanol, a composite working medium or other working media suitable for use.

The heating end socket comprises a heating plate, a heat-conducting medium and a heater.

The heat-conducting medium is water, ethanol, a composite medium or other suitable medium.

The heating plate is made of a 0.2-5 mm metal plate, and the metal plate is made into the heating plate through stamping of a stamping machine. The shape and size of the concave shape of the heating plate are equal to the shape and size of the periphery of the heat conduction pipe, and the shape and size of the concave shape of the heating plate are the same as the shape and size of the periphery of the heat conduction pipe.

The diameter of the heater is 38-55 mm, and the height is 28-580 mm.

The heating strip is arranged on the heater, and the heating strip and the heater are integrated. And manufacturing the heater mold according to the requirements of the specification, the shape and the size of the required heater. The heater is formed by directly punching a metal plate into a suitable heater by a punch through a heater die; the thickness of the metal plate is 0.1-1 mm.

The heating strip is hollow, and the convex appearance of the heating strip is conical.

The lower end of the heater is fixed on the heating plate, a cavity between the heater and the heating plate after fixed connection is sealed and airtight, and a heat-conducting medium is in the cavity between the heater and the heating plate.

The cavity between the heating strip and the heater is communicated with the cavity between the heating plate and the heating strip, the hollow heating strip is convenient for the heat-conducting medium to conduct heat energy at the hollow part of the heating strip, and the heat energy carried by the heat-conducting medium is conducted out through the heating strip; the heat conducting working medium in the pipe inner cavity is scattered around the heating strips on the heater, so that the heat conducting and heating speed of the heat conducting working medium in the pipe inner cavity is improved.

The heating end socket is a heat pipe device. Under the condition of the space volume of the inner cavity of the heating pipe with the same size, the heat conduction and heat exchange area of the heater with the heating strips is 8-35 times larger than that of the heating plate; the heater with the heating strips enlarges the heat dissipation area of heat energy, the heat conducting medium conducts heat conduction and heat exchange of liquid-vapor phase change in the cavity between the heater and the heating plate, enough heat energy can be input into the heating plate with small area, the heater conducting heat exchange with large area can output a large amount of heat energy, and the heat energy conducted on the heater conducts heat conduction and heating for the heat conducting working medium in the tube cavity.

And the heater of the heating end socket conducts heat conduction and heating on the heat conduction working medium in the pipe cavity of the heating pipe.

The lower end of the heating pipe is fixedly welded on the outside of the heat conducting pipe. Through electric welding, weld the border of the heating plate of the heating head of heating pipe lower extreme and the junction of the body of heat pipe and fix, the heating head and the heat pipe fixed connection of heating pipe are as an organic whole.

The boiling point temperature of the heat-conducting medium in the heating end socket is higher than that of the heat-conducting working medium in the heating pipe. And a heat-conducting medium with a higher boiling point is selected in the heating end socket, and a heat-conducting working medium with a lower boiling point is selected in the heating pipe. The high-temperature heat energy conducted by the heating end socket is convenient for conducting heat conduction and heating for the heat conduction working medium in the pipe inner cavity with low boiling point, and the vaporization heat conduction speed of the heat conduction working medium in the pipe inner cavity is increased.

The grain discharging device is arranged below the heating device in the drying bin, and the grain discharging device is 1-15 groups.

The grain discharging device uniformly discharges materials in the drying bin downwards. The grain discharging device increases the downward discharging passing force of the materials between the heating device and the exhaust device. The grain discharging device of the working process reduces the blocking force of the heating device and the exhaust device to materials, the materials in the drying bin are uniformly discharged downwards, the materials are uniformly stirred once through the grain discharging device for one time, the materials discharged through the discharging device are uniformly stirred for many times, the materials in the drying bin are uniformly heated to be dried, and the moisture content of the dried materials is a standard.

The grain discharging device is grain discharging equipment conventionally used by a drying tower; the grain discharging device consists of a motor, a gear box, a rotating plate, a chain, a gear and the like; the rotating plate is arranged in the drying bin, and the motor, the gearbox, the chain and the gear are arranged outside the drying bin; the rotating plate is a shaft with blades, two ends of the shaft are supported by bearings, one end of the shaft is sealed in the bin body, and a gear is arranged on the shaft, of which the other end extends out of the bin body; the motor drives the rotating plate to operate through the gearbox, the chain and the gear. The rotating plate uniformly discharges the materials in the drying bin downwards.

The heat conduction process for the materials by the heating device of the heat pipe type vacuum drying tower is as follows:

firstly, after a medium in a heat conduction pipe of a heating device is heated by an external heating source, heat energy carried by the medium enters the heat conduction pipe of the heating device through a heat energy inlet of the heat conduction pipe; the heat energy carried by the medium in the heat conduction pipe is conducted on the heating plate of the heating seal head of the heating pipe through the pipe body of the heat conduction pipe, and the heat energy conducted on the heating plate directly heats the heat conduction medium in the cavity between the heater and the heating plate.

After the heat-conducting medium in the cavity between the heating end socket heater of the heating pipe and the heating plate is heated, the heat-conducting medium conducts heat conduction and heat exchange of liquid-vapor phase change in the cavity between the heater and the heating plate, the gasified gaseous heat-conducting medium is filled in the cavity between the heater and the heating plate, the heat conduction and heat exchange area of the heater with the heating strips is 8-35 times larger than that of the heating plate, and heat energy carried by the heat-conducting medium of the liquid-vapor phase change conducts heat conduction and heat radiation to the heat-conducting working medium in the pipe inner cavity of the heating pipe through heat conduction of the heater with large-area heat conduction. The heating plate with small area can conduct enough heat to the heat-conducting medium, and the convex heater with large area heat conduction and heat exchange can output a large amount of heat.

Thirdly, liquid heat-conducting working medium in the inner cavity of the heating pipe is gasified after being heated by heat conduction of heat energy on the heater, the gasified gas heat-conducting working medium moves in the inner cavity of the pipe, the gas heat-conducting working medium conducts heat outwards through the metal pipe and dissipates heat, the gas working medium is condensed into the liquid heat-conducting working medium, the condensed liquid heat-conducting working medium falls down onto the convex heater by the gravity of the condensed liquid heat-conducting working medium and is heated and gasified again, the large-area heater provides heat energy for the heat-conducting working medium, the small-area heating end socket can conduct enough heat for the heat-conducting working medium, the heat-conducting working medium conducts heat conduction and heat exchange of 'liquid-vapor phase change' in the inner cavity of the pipe, the heat energy carried by the heat-conducting working medium conducts heat to materials or air outside the metal pipe through the heat conduction and heat radiation of the metal pipe to conduct heat energy to the materials accumulated around the heating device, the materials in the drying bin can be heated and dried after obtaining a large amount of heat energy.

The material vacuum drying process of the heat pipe type vacuum drying tower is as follows:

firstly, materials to be dried enter a drying bin through an air seal machine on a feeding hole of the drying bin, and the materials flow downwards from top to bottom in the bin of the drying bin. The rotating plate of the rotary work of the grain discharging device reduces the blocking force of the heating device and the exhaust device to the materials, the grain discharging device uniformly discharges the materials in the drying bin downwards, the materials discharged for multiple times are uniformly stirred, the materials can be uniformly heated and dried, and the moisture content of the dried materials is a standard.

And simultaneously, heat energy carried by the medium conducts heat to the material through a heating device in the drying bin, the drying moisture uniformity of the material is improved, the moisture in the material in the drying bin is continuously vaporized, and the material is dried.

And thirdly, starting the vacuum unit, and exhausting air in the drying bin and moisture generated during drying of the materials by the vacuum unit through an exhaust device. The exhaust riser of the exhaust device is inserted between the heating pipe of the heating device and the heating pipe, moisture generated in the drying process of the materials in the drying bin enters the guide pipe through the exhaust riser of the exhaust device and the exhaust groove, and the external vacuum unit pumps the moisture in the exhaust device out of the drying bin.

Dust in the moisture that produces when air and material in the dry storehouse passes through dust filter equipment's filtration treatment, and the condenser carries out the condensation processing with the moisture after filtering the dust, and the condensate water is discharged the condenser by the drain valve, and the gas after the condensation is by the dry storehouse of vacuum pump drainage. The relative pressure in the drying chamber is maintained between-0.035 Mpa and-0.095 Mpa.

And fourthly, under the action of the rotation lower row of the dried material in the grain discharge device, after the dried material passes through a discharge hole of the drying bin, the dried material is conveyed by an air seal device on a discharge hole at the lower end of the drying bin and is discharged out of the drying bin.

The heat pipe type vacuum drying tower conducts heat energy to materials for drying. The heat energy generated by the external heating source conducts heat to the materials through the heating device in the drying bin. The conductive drying energy consumption index of the heat pipe type vacuum drying tower is 2800-3500 kJ/kg water, and the convection drying is 5500-8500 kJ/kg water; the effective utilization rate of heat energy of convection drying is generally 20-50%, while conduction drying can approach 100% theoretically, because conduction drying does not need hot air to heat materials, heat loss of hot air exhaust is small, and conduction drying is only the heat energy loss required by evaporation of moisture in material drying.

Compared with the existing drying tower, the invention has the following beneficial effects: the heat energy carried by the medium is used for conducting heat conduction and heating on the material through a heating device in a drying bin of the heat pipe type vacuum drying tower, the heat conduction and heating area of a heater with a heating strip is increased by 8-35 times, a small-area heating end socket conducts enough heat to a heat conduction working medium, the heat conduction working medium conducts heat conduction and heat exchange of liquid-vapor phase change in a pipe inner cavity, the heat energy carried by the heat conduction working medium conducts heat conduction and heat radiation on the material in the drying bin through heat conduction and heat radiation of a metal pipe, an external vacuum unit pumps moisture in an exhaust device out of the drying bin, the material drying efficiency is improved, the material drying effect is optimized, the grain discharge device uniformly discharges the material in the drying bin downwards, and the drying moisture uniformity of the material is also improved; when one heating pipe of the heating device is damaged, leakage is generated, and the use of the whole heat pipe type vacuum drying tower is not influenced.

Description of the drawings:

FIG. 1 is a schematic structural view of a heat pipe type vacuum drying tower according to the present invention;

FIG. 2 is a schematic structural view of a heating apparatus of a heat pipe type vacuum drying tower according to the present invention;

FIG. 3 is a schematic structural view of a heating pipe of the heating apparatus of the heat pipe type vacuum drying tower according to the present invention;

fig. 4 is a schematic structural view of a heating end enclosure of a heating pipe of the heating device of the heat pipe type vacuum drying tower according to the present invention;

FIG. 5 is a schematic structural view of an exhaust apparatus of a heat pipe type vacuum drying tower according to the present invention;

fig. 6 is a schematic cross-sectional view of an exhaust groove of the exhaust apparatus of the heat pipe type vacuum drying tower according to the present invention.

In the figure: 1. the device comprises a drying bin, 2, an exhaust device, 3, a heating device, 4, an exhaust groove, 5, an air shutter, 6, a support frame, 7, a support frame, 8, a vacuum unit, 9, a heat energy inlet, 10, a heat energy outlet, 11, an exhaust port, 12, an air shutter, 13, a heating pipe, 14, a heat conducting pipe, 15, a pipe inner cavity, 16, a heat conducting working medium, 17, a heating end enclosure, 18, a fixing strip, 19, a heat conducting medium, 20, an exhaust groove, 21, a heater, 22, a heating plate, 23, a heating strip, 24, an exhaust vertical pipe, 25, a guide pipe, 26 and a metal pipe.

The specific implementation mode is as follows:

the invention is further described below with reference to the accompanying drawings and examples.