CN218097138U

CN218097138U - Heating device and drying tower

Info

Publication number: CN218097138U
Application number: CN202222538889.1U
Authority: CN
Inventors: 袁长胜; 程长青
Original assignee: Mengzhou Yuanhong Drying Equipment Research and Development Co Ltd
Current assignee: Mengzhou Yuanhong Drying Equipment Research and Development Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2022-12-20
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to a heating device, which comprises a heat transfer pipe and a heat conduction pipe. The opening of the heat transfer pipe is fixed on the hole of the heat transfer pipe. The heat conducting medium carrying heat energy enters the heat conducting pipe through the inlet of the heat conducting pipe and is discharged from the outlet of the heat conducting pipe. The height of the outlet of the heat conduction pipe is higher than the height of the heat conduction pipe, so that the heat conduction medium in the heat conduction pipe cannot flow back and be discharged out of the heat conduction pipe due to gravity. The heat energy carried by the high-temperature heat-conducting medium continuously flowing in the heat-conducting pipe enables the heat-conducting medium in the heat-conducting pipe to absorb enough energy, and the effect of high-temperature heat transfer of surrounding materials by the heat-conducting pipe is guaranteed. The heating device has the advantages of simple structural design, convenient manufacture and processing, low equipment cost and high heat transfer efficiency. The drying tower adopts the heating device, the heat-conducting medium is subjected to closed-loop convection heat transfer in the heating device and the heat source device, the heat-conducting medium is convenient to expand the heat energy heat transfer effect in the heating device due to the arrangement of the integrated heating device, and the efficient drying is ensured.

Description

Heating device and drying tower

Technical Field

The utility model relates to a drying equipment field specifically is a heating device and drying tower.

Background

The heating device commonly adopted by the existing drying tower has the defects of complex structure, complex manufacturing process, high cost, high processing difficulty, high failure rate and difficulty in maintenance. The heating device has the problems of complex heat transfer process, low heat transfer efficiency, short service life and the like.

A heat transfer device of Chinese patent document publication No. CN216954160U comprises a heat transfer pipe, a heat inlet pipe and a heat outlet pipe. The heat transfer tubes are tapered or the diameter of the outlet end of the heat transfer tubes is reduced. The import fixed connection of heat-transfer pipe is on the trompil of advancing the heat pipe, and the export fixed connection of heat-transfer pipe is on the trompil of going out the heat pipe, and it has the problem: 1. the difficulty of the fixed connection of the heat transfer pipe, the heat inlet pipe and the heat outlet pipe is high. 2. The welding difficulty of the heat transfer pipe and the two ends of the heat inlet pipe and the heat outlet pipe is large, and the processing and manufacturing difficulty is large. 3. The welded joint of the heat transfer pipe and the heat inlet pipe and the heat outlet pipe is easy to wear or corrode, so that the leakage failure rate is high, and the maintenance is difficult. 4. The pressure of the medium in the heat inlet pipe at different positions is different, the diameter of the outlet end pipe of the heat transfer pipe is not easy to set, the medium carries out 'convection heat transfer' in the inner cavity of the heat transfer pipe, and the medium passes through the heat transfer pipe from top to bottom, so that the flow speed and the heat transfer efficiency of the medium are influenced.

Chinese patent document publication No. 204388669U an aluminum profile heat pipe heat exchanger, which consists of aluminum profile heat pipes and heat conduction pipes; one end of the lower end enclosure of the aluminum profile heat pipe is inserted in the middle of the heat conducting pipe. It has problems: 1. the manufacturing process of the heat pipe is complex and the production cost is high. 2. The heat transfer temperature is matched with the heat conducting working medium in the heat pipe, and the heat conducting working medium and the pipe body material are compatible, so that the heat conducting working medium suitable for transferring heat at the temperature of 120-280 ℃ is not easy to select. 3. The welding joint of the aluminum profile heat pipe and the heat conducting pipe is easy to wear or corrode, so that the leakage fault rate is high, and the maintenance is not easy. 4. The heat conducting working medium performs phase change heat transfer in the inner cavity of the heat pipe, and the heat conducting area of the head of the heat pipe in the heat conducting pipe is small, so that the heat conducting efficiency is influenced.

CN 105627718A particle material vacuum drying tower, CN105318700A circulating flow hot air drying tower and CN111520977A heat pipe type drying chamber in the current market adopt heating devices with complex manufacturing process, large production and processing difficulty, high equipment manufacturing cost and low heat transfer efficiency, which causes the drying efficiency of the drying tower to be low, and the failure rate is high and is not easy to maintain.

Therefore, to overcome the disadvantages of the existing heating devices, it is necessary to design a new heating device; the novel drying tower needs to be matched with a novel heating device for use, so that the drying tower can be ensured to carry out high-efficiency heat transfer drying, and the fault occurrence of the heating device is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to overcome the not enough of prior art existence, provide a heating device.

In order to achieve the purpose, the utility model discloses a following technical scheme realizes: a heating device comprises a heat transfer pipe and a heat conduction pipe.

The heat transfer pipe is a metal pipe with one closed end. One end of the heat transfer pipe is closed, and the pipe head at the other end is an open pipe orifice.

The length of the heat transfer pipe is 300-800 mm, and the pipe diameter is 28-80 mm. In order to increase the heat transfer area, the heat transfer pipe can be selected from finned pipes, and the fins are preferably fixed on the heat transfer pipe in a longitudinal mode, and the longitudinal fixation is beneficial to downward flow of materials. The heat transfer pipe is preferably made of an aluminum profile in an extruded fin shape.

The overall appearance shape of the heat conducting pipe is a circle or a polygon which is suitable for the shape of the drying tower. The heat conducting pipe is processed into a round shape or a polygonal shape suitable for the shape of the drying tower by a pipe bending device or a processing method of welding a bent head and the like.

The diameter of the heat conduction pipe is 10-28 mm larger than that of the heat transfer pipe, and the length of the heat conduction pipe is set according to the size of the heating device.

The heat conduction pipe is provided with a hole. The hole diameter size of the hole is matched with the outer diameter size of the heat transfer pipe. The aperture size of the hole is consistent with the outer diameter size of the heat transfer pipe; the aperture size of the hole is larger than the outer diameter size of the heat transfer pipe; or the outer diameter of the heat transfer pipe is larger than the aperture of the hole, so that the pipe body at the mouth of the heat transfer pipe can be conveniently processed to manufacture threads, and the threaded hot melting hole can be conveniently fixed.

The holes are holes processed by laser cutting or hot-melting holes processed by hot-melting drilling.

The hot melting drilling technology is a chipless processing technology for processing holes on the pipe body of the heat conduction pipe at one time. Extruding hot melting holes on the pipe body of the heat conduction pipe by rotating the hot melting drill bit and pressing upwards or downwards; the hot melting hole and the heat conduction pipe body are integrated, and the length of a taper sleeve of the hot melting hole is 3-4 times of the thickness of the initial pipe body; the taper sleeve of the hot melting hole is internally provided with a threaded hole or a unthreaded hole. The taper sleeve is internally processed into a threaded hole through equipment.

The taper sleeve is a hole of the hot melting hole. The upper end of the taper sleeve protruding out of the heat conduction pipe body is provided with a circular boss.

As a preferred embodiment of the present case: the pipe orifice diameter of heat-transfer pipe and the size of the hole internal diameter of heat pipe cooperate, and the mouth of pipe of heat-transfer pipe is fixed on the hole of heat pipe, and the mouth of pipe of heat-transfer pipe and the hole seal of heat pipe are fixed as an organic whole.

Preferably, the heat transfer pipe is sealed and fixed with the hole of the heat transfer pipe by taking a sealing measure for the pipe head of the heat transfer pipe and then performing a processing process such as welding. The heat transfer pipe is characterized in that the pipe head of the heat transfer pipe and the taper sleeve of the hot melting hole of the heat transfer pipe are sealed and fixed into a whole by a sealing measure, and the pipe body of the heat transfer pipe and the circular boss of the hot melting hole of the heat transfer pipe are fixed into a whole by welding or machining and matching.

The sealing fixation between the pipe orifice of the heat transfer pipe and the hole of the heat transfer pipe is realized by sealing measures, welding by a welding machine, other fixing equipment or a combination of other fixing sealing measures such as other sealing devices or a plurality of fixing sealing measures, the fault that medium leakage is generated due to corrosion or abrasion of the welding seam of the heat transfer pipe and the heat transfer pipe body is avoided, the phenomenon that steam in the heat transfer pipe cannot leak out through a leakage opening on the welding seam of the heat transfer pipe is guaranteed, and the heating equipment cannot be damaged.

The sealing measures on the tube head of the heat transfer tube ensure that the heat-conducting medium in the heat transfer tube cannot leak out through a leakage opening on the welding seam of the heat transfer tube, so that the heating equipment cannot be damaged.

The sealing measure on the heat transfer pipe head is to paint sealing glue, or wind a sealing strip, or sleeve a sealing sleeve, or sleeve a sealing ring, or additionally install other sealing devices. For example: the sealing sleeve is a silica gel sealing sleeve, or a fluorine rubber sealing sleeve, or a rubber sealing ring, or a sealing sleeve made of other high-temperature resistant materials. The sealing sleeve is sleeved on the opening of the heat transfer pipe.

The fixed seal between the tube head of the heat transfer tube and the hole of the heat transfer tube avoids the fault of medium leakage caused by corrosion or abrasion of the welding seam of the heat transfer tube and the tube body of the heat transfer tube through a sealing measure and a welded double insurance. The sealing measure on the tube head of the heat transfer tube ensures that the heat-conducting medium in the heat transfer tube cannot leak out through a leakage opening on the welding seam of the heat transfer tube, so that the heating equipment cannot be applied due to damage.

The pipe body at the mouth of the heat transfer pipe is provided with threads. The screwed pipe head of the heat transfer pipe is sealed and fixed with the hot melting hole with the screwed hole into a whole through sealing measures and two fixed sealing methods of welding. The length of the hot melting hole taper sleeve is 3-4 times of the thickness of the initial pipe body.

And setting the distance between the heat transfer pipe and the adjacent heat transfer pipe according to the particle size of the material dried by the drying tower. For example, dried corn kernels, the heat transfer tubes and the adjacent heat transfer tubes are spaced 50-65 mm apart from each other according to the diameter of the corn kernels, which is 9-12 mm.

The heat transfer pipe head adopts sealing measures and is welded and fixed in the hot melting hole with the threaded hole, the heat transfer pipe head and the hot melting hole are sealed and fixed together, the hot melting hole with the thickness being 3-4 times of that of the pipe body of the heat transfer pipe supports and fixes the heat transfer pipe, the firmness of the heat transfer pipe and the heat transfer pipe is improved, the fixed sealing area of the heat transfer pipe and the pipe body of the heat transfer pipe is increased, and the air tightness between the heat transfer pipe head and the hot melting hole is enhanced.

The heat conducting medium used in the heat conducting pipe is heat conducting oil, or water, or molten salt. The temperature of the heat-conducting medium is 80-280 ℃ according to the requirement of material drying.

The outlet elevation of the heat conduction pipe is higher than the elevation of the heat conduction pipe. The outlet elevation of the heat conduction pipe is higher than the elevation of the heat conduction pipe, so that the heat conduction medium in the heat conduction pipe cannot flow back to be discharged out of the heat conduction pipe due to gravity.

The drainage device is preferably fixed on the outlet of the heat conduction pipe, the drainage device can firstly pump out the gas in the heat conduction pipe and the heat transfer pipe, and when the heat conduction pipe and the heat transfer pipe are in a negative pressure state, the heat conduction medium enters the heat conduction pipe and the heat transfer pipe under the action of the negative pressure. The drainage device is a water pump, or a vacuum pump, or a circulating pump.

The heat conducting medium in the heat conducting pipe enters the pipe of the heat conducting pipe through the pipe opening of the heat conducting pipe, and the heat conducting medium conducts convection heat in the heat conducting pipe and the heat conducting pipe. The heat energy carried by the heat-conducting medium continuously flowing in the heat-conducting pipe transfers heat to the heat-conducting medium in the heat-conducting pipe, and the heat-conducting medium in the heat-conducting pipe can be mutually complemented, filled and mixed together.

And the heat-conducting medium in the heat-conducting pipe flows from bottom to top. Under the dual functions of the pressure generated by the downward and upward flowing of the heat-conducting medium in the heat-conducting pipe and the outlet height of the heat-conducting pipe, the heat-conducting medium in the heat-conducting pipe cannot cause the emptying or partial emptying of the heat-conducting pipe due to gravity, so that the heat-conducting efficiency of the heat-conducting pipe is not influenced.

The utility model discloses heat conduction medium convection heat transfer's that adopts in heat pipe and the heat transfer pipe theory of operation:

1. the heat conducting medium conducts convection heat transfer in the heat conducting pipe and the heat conducting pipe. In the process of carrying out convection heat transfer on the heat conduction pipe and the heat conduction medium in the heat conduction pipe, heat transfer is accompanied with the movement of the heat conduction medium. Due to expansion with heat and contraction with cold, the density of the hot heat-conducting medium is a little smaller, and the density of the cold heat-conducting medium is a little larger, so that the hot heat-conducting medium rises, the cold heat-conducting medium falls, the mutual exchange positions of the hot heat-conducting medium and the cold heat-conducting medium form good circulation, and heat is transferred in a circulating manner. The high-temperature heat-conducting medium in the heat-conducting pipe heats the heat-conducting medium in the heat-conducting pipe, and heat energy carried by the high-temperature heat-conducting medium in the heat-conducting pipe enters the pipe of the heat-conducting pipe through the pipe opening of the heat-conducting pipe until the temperature of the high-temperature heat-conducting medium in the heat-conducting pipe and the temperature of the low-temperature heat-conducting medium in the heat-conducting pipe relatively tend to be balanced.

2. The high-temperature heat-conducting medium in the heat-conducting pipe moves along the pipe cavity of the heat-conducting pipe through the pipe opening of the heat-conducting pipe and rises to enter the upper part in the pipe of the heat-conducting pipe.

3. The heat energy carried by the heat-conducting medium in the heat-conducting pipe cavity conducts and heats surrounding materials through the heat-conducting pipe body, the low-temperature heat-conducting medium after heat dissipation descends and flows back into the heat-conducting pipe, and the heat-conducting medium entering the heat-conducting pipe conducts flowing heat transfer in the heat-conducting pipe.

4. The heat conducting medium in the heating device flows from bottom to top, the heat energy carried by the high-temperature heat conducting medium continuously flowing in the heat conducting pipe enables the heat conducting medium in the heat conducting pipe to fully absorb enough energy, and the heat conducting medium in the heat conducting pipe is heated from low temperature to high temperature, so that the effect of high-temperature heat transfer of surrounding materials by the heat conducting pipe is achieved.

5. The heating device has the advantages of simple structural design, easy manufacture and processing, high reliability, low equipment cost and high heat transfer efficiency.

The to-be-solved technical problem of the utility model is to overcome not enough that current drying tower exists, provide a novel drying tower.

In order to achieve the purpose, the utility model discloses a following technical scheme realizes: a drying tower comprises the heating device. The heating device comprises a heat transfer pipe and a heat conduction pipe; the opening of the heat transfer pipe is fixedly sealed on the hole of the heat transfer pipe.

A drying tower comprises a drying bin, a heating device, a grain discharging device, a support, an air seal machine and an exhaust device.

And the air seal machinery is fixedly arranged on the feeding hole and the discharging hole of the drying bin. The support is fixedly supported on the bin body at the lower end of the drying bin, and the discharge hole of the drying bin is arranged below the bin body.

And a plurality of heating devices are arranged in the drying tower. The plurality of heating devices are fixedly connected into a whole through a plurality of connection modes. For example: 1. the outlet of the heat conducting pipe of the former heating device is fixedly connected to the inlet of the heat conducting pipe of the next adjacent heating device, and the plurality of heating devices are sequentially connected in series and are integrally installed in the tower of the drying tower. 2. The inlet of the heat conduction pipe of the heating device is fixed on a medium inlet pipe, the outlet of the heat conduction pipe of the heating device is fixed on a medium outlet pipe, and the heating devices are sequentially connected in series from top to bottom and are installed in the tower of the drying tower. 3. A plurality of heating devices are sequentially connected in series into a whole from top to bottom and are arranged in a tower of the drying tower. The 2 or 8 or 12 or more heating devices in the drying tower are respectively combined into 2-in-1 or 8-in-2 or 12-in-4 or other suitable groups of integrated heating devices. The inlets or outlets of the heat conducting pipes of the 2 in 1 group or 8 in 2 group or 12 in 4 group or other suitable groups of integrated heating devices are respectively fixed on 1 or 2 or 4 or more medium inlet pipes or medium outlet pipes. The inlets of the heat conducting pipes of the heating devices in each group are respectively fixed on 1 medium inlet pipe, and the outlets of the heat conducting pipes of the heating devices are respectively fixed on 1 medium exhaust pipe.

The heating device can also adopt other suitable integrated combinations, and the arrangement of the integrated heating device is convenient for the heat transfer speed of the heat-conducting medium in the heating device, so that the heat transfer efficiency is increased.

The inlet and the outlet of the heating device are respectively connected with an external heat source device such as a boiler or a heat pump through a conduit.

The grain discharging device is arranged in the drying bin, and the exhaust device pumps moisture generated by drying materials in the drying bin.

The utility model discloses heating device's of drying tower heat transfer drying method, including following step:

step one, after a heat-conducting medium is heated by an external heat source device such as a boiler or a heat pump, the heat-conducting medium carrying heat energy enters the heat-conducting pipe through a medium inlet pipe through an inlet of the heat-conducting pipe, and is discharged out of the heat-conducting pipe through an outlet of the heat-conducting pipe. The heat-conducting medium carrying heat energy enters the heating devices, and the heat-conducting medium carrying heat energy sequentially passes through the plurality of heating devices from bottom to top to sequentially conduct heat conduction and heat transfer on the materials. The heat-conducting medium in the heating device flows from bottom to top, the high-temperature heat-conducting medium meets the high heat energy requirement of the drying section of the drying bin of the drying tower, and the heat-conducting medium which gradually transfers heat and cools can preheat and heat the material in the preheating section of the drying bin; the material drying corresponding utilization of the heat-conducting media with different temperatures at different positions in the drying bin is realized, and the effective utilization rate of heat energy is improved.

And step two, wet materials are conveyed to enter a top bin of the drying tower through a lifting device, the wet materials flow downwards on the drying tower by means of self gravity and a grain discharging device, and the discharging device can enable the materials to be uniformly discharged.

And step three, enabling the heat-conducting medium to enter the heat-conducting pipe through the pipe orifice of the heat-conducting pipe by high pressure in the heat-conducting pipe. The heat conduction pipe and the heat conduction medium in the heat conduction pipe conduct heat in a mutual convection mode, and heat energy carried by the heat conduction medium in the heat conduction pipe conducts heat for the heat conduction medium in the heat conduction pipe.

And step four, 40-380 heat transfer pipes of the heating device can conduct heat uniformly, materials around the heating device can be heated in a heat conduction mode, and the exhaust device exhausts moisture generated by drying the materials in the drying bin, so that the humidity in the drying bin is reduced, and the material drying rate is improved.

Step five, after the heat-conducting medium after heat dissipation is discharged out of the heating device through an outlet of the heat transfer pipe, the heat-conducting medium enters the external heating devices such as a boiler or a heat pump through the medium calandria again for re-circulation heating; the heat conducting medium is used for heating and transferring heat in the heating device and the heating device in a closed loop manner, the effective utilization rate of heat energy is high, and the energy consumption is greatly saved.

The utility model discloses heating device can replace CN 105627718A granule material vacuum drying tower, CN111520977A heat pipe formula drying storehouse, CN105318700A circulation flow hot air drying tower and other drying towers and adopt, has ensured that drying tower can carry out high-efficient drying.

The utility model discloses there is following beneficial effect: a heating device comprises a heat transfer pipe and a heat conduction pipe; the opening of the heat transfer pipe is fixedly sealed on the hole of the heat transfer pipe; the sealing measures of the tube head of the heat transfer tube and the hot melting hole of the heat transfer tube and the double insurance of welding avoid the fault of medium leakage caused by corrosion or abrasion of the welding seam of the heat transfer tube and the tube body of the heat transfer tube. The height of the outlet of the heat conduction pipe is higher than the height of the heat conduction pipe, so that the heat conduction medium in the heat conduction pipe cannot flow back and be discharged out of the heat conduction pipe due to gravity. The heat energy carried by the high-temperature heat-conducting medium continuously flowing in the heat-conducting pipe enables the heat-conducting medium in the heat-conducting pipe to absorb enough energy, so that the heat-conducting pipe achieves the effect of conducting high-temperature heat transfer on surrounding materials. The heating device has the advantages of simple structural design, convenient manufacture and processing, low equipment cost and high heat transfer efficiency. The drying tower adopts the matched use of the heating device, the heat-conducting medium carries out closed-loop convection heat transfer in the heating device and the heat source device, the heat transfer effect of heat energy is enlarged, and the drying tower can carry out high-efficiency drying.

Description of the drawings:

fig. 1 is a schematic structural view of the heating device of the present invention;

fig. 2 is a schematic structural view of the heating device of the drying tower of the present invention in combination connection according to embodiment 1;

fig. 3 is a schematic structural view of the heating device of the drying tower of the present invention in combination connection according to embodiment 2.

In the figure: 1. the heat pipe comprises a heat conduction pipe 2, a heat conduction pipe 3, a pipe opening 4, a hole 5, an outlet 6, an inlet 7, a medium flow direction 8, a medium inlet pipe 9 and a medium exhaust pipe.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings and examples.

Example 1:

a heating apparatus shown in fig. 1 includes a heat transfer pipe 1 and a heat transfer pipe 2.

The heat transfer pipe 2 is a metal pipe with one closed end; the length of the heat transfer pipe 2 is 300-800 mm, and the pipe diameter is 28-60 mm.

The heat transfer pipes 1 have a polygonal external shape.

The diameter of the heat conduction pipe 1 is 6mm larger than that of the heat transfer pipe 2, and the length of the heat conduction pipe 1 is set according to the size of the heating device.

The heat conducting pipe 1 is provided with holes 4. The hole 4 is a hot melting hole processed by a hot melting drill; the hot melt hole has no thread.

The aperture size of the hot melting hole of the hole is 0.1-0.5 mm larger than the outer diameter size of the heat transfer pipe 2.

The sealing sleeve is worn on the pipe orifice of the heat transfer pipe 2 and sleeved on the pipe head of the heat transfer pipe 2. The sealing sleeve is a fluororubber sealing sleeve.

The mouth of pipe 3 of heat-transfer pipe 2 who wears the seal cover is inserted in 4 hot melt holes in hole of heat pipe 1, and the seal cover extrusion on the mouth of pipe 3 of heat-transfer pipe 2 is downthehole at the hot melt, and 0.1 ~ 0.5mm interval between the hot melt hole of the mouth of pipe 3 of heat-transfer pipe 2 and heat pipe 1 is fixed sealed by the seal cover, and the body in the 3 departments of the mouth of pipe of heat-transfer pipe 2 and the ring boss in the hot melt hole of heat pipe 1 pass through the welded fastening as an organic whole.

The heat conducting medium used in the heat conducting pipe 1 is heat conducting oil, and the temperature of the heated heat conducting medium is 220 ℃.

The level of the outlet 5 of the heat transfer pipe 1 is higher than that of the heat transfer pipe 2. The elevation of the outlet 5 of the heat conduction pipe 1 is larger than that of the heat conduction pipe 2, so that the heat conduction medium in the heat conduction pipe 2 cannot flow back and be discharged out of the heat conduction pipe 2 due to gravity.

The heat energy carried by the heat-conducting medium in the heat-conducting pipe 1 enters the pipe of the heat-conducting pipe 2 through the pipe opening 3 of the heat-conducting pipe 2, and the heat-conducting medium conducts convection heat in the heat-conducting pipe 1 and the heat-conducting pipe 2.

The heat-conducting medium in the heat-conducting pipe 2 does not flow out of the heat-conducting pipe 2 due to gravity under the dual effects of the pressure generated by the downward and upward flowing of the heat-conducting medium in the heat-conducting pipe 1 and the height of the outlet 5 of the heat-conducting pipe 1.

In order to achieve the purpose, the utility model discloses a following technical scheme realizes: a drying tower comprises the heating device.

The heating device comprises a heat transfer pipe 2 and a heat transfer pipe 1; the opening 3 of the heat transfer pipe 2 is fixed to the hole 4 of the heat transfer pipe 1.

A drying tower comprises a drying bin, a heating device, a grain discharging device, a support, an air seal machinery and an exhaust device.

And a plurality of heating devices are arranged in the drying tower. The drying tower is a square drying tower, and the appearance shape of the heat conduction pipe 1 of the corresponding heating device is square.

As shown in fig. 1, the plurality of heating apparatuses shown in fig. 2 are combined into one body. The outlet 5 of the heat conduction pipe 1 of the lower heating device is fixedly connected to the inlet 6 of the heat conduction pipe 1 of the adjacent upper heating device, and a plurality of heating devices are sequentially connected in series from top to bottom and are installed in the tower of the drying tower; the inlet 6 and the outlet 5 of the heating device are respectively connected with an external heat source device such as a boiler or a heat pump through a conduit.

step one, after a heat-conducting medium is heated by an external heat source device such as a boiler or a heat pump, the heat-conducting medium carrying heat energy enters the heat-conducting pipe 1 through an inlet 6 of the heat-conducting pipe 1 and is discharged out of the heat-conducting pipe 1 through an outlet 5 of the heat-conducting pipe 1. And heat-conducting media carrying heat energy enter the heating devices as shown in the medium flow direction 7, and the heat energy carried by the heat-conducting media sequentially passes through the plurality of heating devices from bottom to top to conduct heat conduction and heat transfer on the materials.

And step three, enabling the heat-conducting medium to enter the tube of the heat-conducting tube 2 through the tube opening 3 of the heat-conducting tube 2 by high pressure in the heat-conducting tube 1. The heat conducting media in the heat conducting pipe 1 and the heat conducting pipe 2 conduct heat in a mutual convection manner, and the heat energy carried by the heat conducting media in the heat conducting pipe 1 conducts heat transfer and heating on the heat conducting media in the heat conducting pipe 2.

And step four, 40-380 heat transfer pipes 2 of the heating device can conduct heat uniformly, materials around the heating device can be heated in a heat conduction mode, and the exhaust device exhausts moisture generated by drying the materials in the drying bin, so that the material drying speed is improved.

Step five, after the heat-conducting medium after heat dissipation is discharged out of the heating device through an outlet 5 of the heat transfer pipe 2, the heat-conducting medium enters an external heat source device such as a boiler or a heat pump again through a medium pipe bank for reheating; the heat conducting medium conducts heat in a closed loop in the heating device and the heat source device, the effective utilization rate of heat energy is high, and energy conservation and emission reduction are realized.

Example 2:

A heating apparatus of the present embodiment 2 is the same as the heating apparatus described in embodiment 1, and a description thereof will not be repeated. The heat conduction pipe 1 is provided with a hole 4.

The hole 4 is a hot melting hole processed by a hot melting drill, and the hot melting hole is provided with threads.

The aperture size of hole is less than the external diameter of pipe size of heat-transfer pipe, and the external diameter of pipe size of heat-transfer pipe is greater than the aperture size of hole, and the orificial body processing preparation screw thread of heat-transfer pipe of being convenient for is convenient for fix screwed hot melt hole.

After taking earlier to paint sealing glue or twine sealing measures such as sealing strip on 2 orificial screw threads of heat-transfer pipe, will go up the rotatory people of twisting in the hole of heat-transfer pipe 1 of the orificial mouth of pipe of screw on 2 pipes of heat-transfer pipe, pass through the welding machine on next step and pass through welded fastening as an organic whole with the body in 2 orificial 3 departments of heat-transfer pipe and the ring boss in the hot melt hole of heat-transfer pipe 1.

The heat transfer pipe 2 is fixedly sealed with the hot melting hole with the threaded hole of the heat transfer pipe 1 into a whole through sealing measures and two fixed sealing methods of welding, so that the fault of medium leakage caused by corrosion or abrasion of a welding seam of the heat transfer pipe 2 and the pipe body of the heat transfer pipe 1 is avoided.

A drying tower as shown in fig. 1 and 3 comprises a heating device as described above.

A drying tower of the present embodiment 2 is the same as the drying tower described in the embodiment 1, and a description thereof will not be repeated.

A drying tower comprises a drying bin, a heating device, a grain discharging device, a support, an air seal machinery and an exhaust device; a plurality of heating devices are installed in the drying tower. The drying tower is a cylindrical drying tower, and the appearance shape of the heat conduction pipe 1 of the corresponding heating device is circular.

As shown in fig. 3, the plurality of heating apparatuses shown in fig. 1 are combined into one body. An inlet 6 of a heat conduction pipe 1 of the heating device is fixed on a medium inlet pipe 8, an outlet 5 of the heat conduction pipe 1 of the heating device is fixed on a medium outlet pipe 9, and a plurality of heating devices are sequentially connected in series and are installed in a tower of the drying tower.

The medium inlet pipe 8 and the medium outlet pipe 9 are respectively connected with an external heat source device such as a boiler or a heat pump through a conduit.

After being heated by an external heat source device such as a boiler or a heat pump, the heat-conducting medium carrying heat energy enters the medium inlet pipe 8 under the action of the liquid drainage device.

As shown in the medium flow direction 7, the high-temperature heat transfer medium in the medium inlet pipe 8 enters the heat transfer pipe 1 of the heating apparatus through the inlet 6 of the heat transfer pipe 1, and the heat transfer medium after heat transfer enters the medium outlet pipe 9 through the outlet 5 of the heat transfer pipe 1. The heat-conducting medium entering the medium outlet pipe 9 enters the external heat source device such as an external boiler or a heat pump for reheating, the heated heat-conducting medium enters the medium inlet pipe 8 again, and the heat-conducting medium performs closed-loop heat transfer in the heating device and the heat source device. The heat energy carried by the heat-conducting medium conducts heat conduction and transfers heat to the materials through a plurality of heating devices.

Example 3:

A heating apparatus of the present embodiment 3 is the same as the heating apparatus described in embodiment 1, and a description thereof will not be repeated.

The heat conducting pipe 1 is provided with holes 4. When the tube body of the heat conduction tube 1 has a certain thickness, the holes 4 are holes formed by laser cutting.

The pipe orifice 3 of the heat transfer pipe 2 is inserted into the hole 4 of the heat transfer pipe 1, and the pipe orifice 3 of the heat transfer pipe 2 is fixedly connected to the hole 4 of the heat transfer pipe 1 through welding of a welding machine or other fixing equipment or other sealing devices.

The above embodiments are only used to help understand the manufacturing method and the core idea of the present invention, and the specific implementation is not limited to the above specific implementation, and those skilled in the art can start from the above conception, and the changes made without creative labor all fall within the protection scope of the present invention.

Claims

1. A heating device comprises a heat transfer pipe and a heat conduction pipe; the method is characterized in that: the heat transfer pipe is a metal pipe with one closed end, and the opening of the heat transfer pipe is fixed on the hole of the heat transfer pipe;

the outlet elevation of the heat conduction pipe is higher than the elevation of the heat conduction pipe, and the heat conduction medium conducts convection heat transfer in the heat conduction pipe and the heat conduction pipe.

2. The heating device according to claim 1, characterized in that: the length of the heat transfer pipe is 300-800 mm, and the pipe diameter is 28-80 mm.

3. The heating device according to claim 1, characterized in that: the heat conducting medium is water, heat conducting oil or molten salt.

4. The heating device according to claim 1, characterized in that: the holes are holes processed by laser cutting or hot-melt holes processed by hot-melt drilling.

5. The heating device according to claim 4, characterized in that: the taper sleeve of the hot melting hole is internally provided with a threaded hole or a unthreaded hole.

6. A drying tower is characterized in that: a heating apparatus comprising a heating apparatus as claimed in any one of claims 1 to 5.