A high-temperature powder heat exchanger

Abstract

The present invention discloses a high-temperature powder heat exchanger, which relates to the technical field of heat exchangers. In the present invention, a drainage pipe group is installed on the second silo mechanism, and the heat exchange channel is installed between each heat exchange pipe. The upper and lower heat exchange channels are connected in series. The drainage pipe group is connected to the corresponding heat exchange channel, and the discharge channel is connected to the corresponding heat exchange pipe. The high-temperature powder falling in the material guide channel enters the corresponding heat exchange pipe. An inlet pipe is installed at the top of the upper heat exchange channel. A gravity water exchange pipe connected to the inlet pipe is connected to the bottom of the water storage tank. A heat exchange air pipe is installed on the gravity water exchange pipe. The present invention promotes the flow of water in the heat exchange channel by airflow. A water film is attached to the inner wall of the heat exchange cavity through which the water flows. The water film is evaporated under the action of the air flow, thereby realizing evaporation heat exchange of each heat exchange pipe. Compared with the traditional continuous ventilation or circulating water heat exchange method, energy consumption and water resource requirements are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and in particular relates to a high-temperature powder heat exchanger. Background Art

[0002] In industries such as metallurgy, mining, chemical industry, machinery and manufacturing, it is generally necessary to use equipment such as calcining furnaces and hot air furnaces to heat materials to high temperatures. However, the back-end processes such as transportation, storage, transportation and packaging of high-temperature materials need to be carried out in medium and low temperature environments. Therefore, in the powder processing process, special heat exchangers used for cooling high-temperature powders are particularly important.

[0003] Most of the existing high-temperature powder heat exchange equipment relies entirely on air as the heat exchange medium, completing heat transfer through direct contact between the air flow and the heat exchange pipe, thereby achieving heat exchange and cooling of the high-temperature powder. The heat exchange method that only uses air as the heat exchange medium results in poor heat exchange effect. Although the use of a circulating pump to achieve water circulation can improve the heat exchange effect, the continuous operation of the circulating pump causes increased power and water consumption, and cannot achieve the energy-saving purpose of the heat exchange process.

[0004] To this end, we provide a new high-temperature powder heat exchanger to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature powder heat exchanger. Through the specific structural design of the first silo mechanism, the second silo mechanism, the heat exchange mechanism, the powder material guiding assembly, the heat exchange assembly, the heat exchange flow supply assembly, the feed silo assembly, the cover assembly and the inlet pipe, the problem of poor heat exchange effect of the existing high-temperature powder heat exchange equipment, which easily causes increased power and water consumption and cannot achieve the energy saving purpose in the heat exchange process is solved.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: the present invention is a high-temperature powder heat exchanger, comprising a first silo mechanism and a second silo mechanism; at least two heat exchange mechanisms are installed between the first silo mechanism and the second silo mechanism; the first silo mechanism includes a powder guide assembly, the powder guide assembly includes a plurality of guide channels arranged in a circumferential array, the guide channels are used to transport the high-temperature powder downward; the second silo mechanism includes a discharge channel arranged in a circumferential array and corresponding to the guide channels one by one, the second silo mechanism is installed with a discharge pipe group, the discharge channel is used to output and collect the powder that has completed heat exchange; the heat exchange mechanism includes a heat exchange assembly, The heat exchange assembly includes a heat exchange channel and a plurality of heat exchange pipes arranged in a circumferential array. The heat exchange channel is sleeved and installed between each heat exchange pipe. The upper and lower heat exchange channels are connected in series, and the discharge pipe group is connected to the corresponding heat exchange channel; the discharge channel is connected to the corresponding heat exchange pipe, and the high-temperature powder falling in the guide channel enters the corresponding heat exchange pipe. An inlet pipe is installed at the top of the upper heat exchange channel; a heat exchange supply assembly coaxial with the first silo mechanism is installed below the first silo mechanism, and the heat exchange supply assembly includes a water tank. A gravity-flow hot water pipe connected to the inlet pipe is connected to the bottom of the water tank, and a heat exchange gas pipe is installed on the gravity-flow hot water pipe.

[0007] In some embodiments, the first silo mechanism further includes a feed silo assembly; wherein, the feed silo assembly includes a first storage silo, a feed silo is installed on the top of the first storage silo, a guide hopper is fixedly provided on the inner wall of the feed silo, a first support plate is fixedly provided on the inner wall of the first storage silo, and a first drop-out port corresponding one-to-one to the material guide channel is provided on the surface of the first support plate.

[0008] In some embodiments, the powder guide assembly also includes a linkage shaft rotatably connected to the first support disk, a conical guide platform fixed to the linkage shaft is fitted on the top of the first support disk, and a plurality of material stripping plates are arranged in a circumferential array on the circumferential side of the conical guide platform, and the bottom of the material stripping plate is slidably fitted on the top of the first support disk; a second support disk fixed to the linkage shaft is rotatably provided on the inner wall of the first storage bin, the material guide channel is fixedly installed on the second support disk, and an arc-shaped sealing plate is fixed between adjacent material guide channels, the top surface of the arc-shaped sealing plate is flush with the top surface of the material guide channel, the top of the arc-shaped sealing plate is fitted on the bottom of the first support disk, and a toothed disk coaxial with the second support disk is provided below the second support disk, and the material guide channel is fixedly installed on the toothed disk.

[0009] In some embodiments, the second silo mechanism also includes a second storage silo, a discharge silo is installed at the bottom of the second storage silo, a third support plate and a fourth support plate are fixed on the inner wall of the second storage silo, the discharge channel is installed between the third support plate and the fourth support plate, the drainage pipe group includes a closed flow guide cover fixed on the top of the fourth support plate, and a drainage pipe connected to the closed flow guide cover is installed on the side surface of the second storage silo.

[0010] In some embodiments, the heat exchange mechanism further includes a cover assembly; wherein, the cover assembly includes a heat exchange shield, a fifth support plate is fixedly provided on the inner wall of the heat exchange shield, a plurality of second drop-out ports are provided in a circumferential array on the surface of the fifth support plate, the top of the fifth support plate is tightly fitted with the bottom of each heat exchange material tube above it, the bottom of the fifth support plate is tightly fitted with the top of each heat exchange material tube below it, the bottom of the material guide channel is tightly fitted with the top of the fifth support plate below it, and the third support plate is tightly fitted with the bottom of each heat exchange material tube above it.

[0011] In some embodiments, the heat exchange assembly further includes a mounting plate mounted on the inner wall of the heat exchange shield, the heat exchange flow channel includes heat exchange pipes corresponding one to one with the heat exchange material pipes, the heat exchange pipes are fixedly arranged on the mounting plate, the heat exchange pipes are fixedly sleeved on the corresponding heat exchange material pipes, and a heat exchange cavity is provided between the heat exchange pipes and the corresponding heat exchange material pipes; a plurality of upper conducting pipes are provided above the mounting plate, and a plurality of lower conducting pipes are provided below the mounting plate, the upper conducting pipes are connected to the tops of the heat exchange pipes on both sides thereof, the lower conducting pipes are connected to the bottoms of the heat exchange pipes on both sides thereof, and a deflector pipe is fixedly provided at the bottom of the mounting plate; an input pipe connected to the bottom of the heat exchange pipe at the head end of the heat exchange flow channel is fixed on the mounting plate, the bottom of the heat exchange pipe at the tail end of the heat exchange flow channel is connected to a guide pipe, the guide pipe is connected to the deflector pipe, and the bottom of the deflector pipe is connected to an output pipe.

[0012] In some embodiments, the input pipe and the output pipe between two adjacent heat exchange channels are tightly connected, the inlet pipe is installed on the heat exchange shield and tightly connected to the input pipe above, the sealed flow guide cover is tightly connected to the output pipe below, and a plurality of first heat exchange fins and second heat exchange fins with opposite inclination directions are arrayed on the inner wall of the heat exchange material tube.

[0013] In some embodiments, the heat exchange and flow supply assembly also includes a supporting frame installed on the corresponding heat exchange shield, the water tank is installed on the top of the supporting frame, a heat exchange air supply device is installed on the top of the water tank, the heat exchange air pipe is arranged between the heat exchange air supply device and the gravity water exchange pipe, an electromagnetic valve is installed on the gravity water exchange pipe, the heat exchange air pipe is between the inlet pipe and the electromagnetic valve, a water inlet pipe is installed on the side surface of the water tank close to the top position, and a meshing opening is opened on the side surface of the heat exchange shield corresponding to the gear disc, and the output end of the stepper motor installed on the supporting frame is connected to a power gear, and the power gear is meshed with the gear disc through the meshing opening.

[0014] The present invention has the following beneficial effects: 1. The present invention continuously transports heat exchange air into the inlet pipe through the heat exchange air pipe and the gravity-flowing water exchange water pipe. The heat exchange air entering the inlet pipe continuously flows through the various heat exchange cavities in the various heat exchange channels. In this process, the water in the heat exchange channel is pushed by the airflow to continuously flow, and a water film is attached to the inner wall of the heat exchange cavity through which the water flows, thereby realizing water-cooling heat exchange of each heat exchange material pipe in the entire heat exchange channel, and then evaporation of the water film is realized under the action of the air flow, thereby again realizing evaporation heat exchange of each heat exchange material pipe in the entire heat exchange channel. Compared with the traditional continuous ventilation or circulating water heat exchange method, the present application not only reduces energy consumption and water resource requirements, but also greatly increases the heat exchange effect of each heat exchange material pipe on the entire heat exchange channel.

[0015] The present invention opens the solenoid valve through timed control, so that the quantitative cooling water in the water tank can flow along the gravity-flow hot water pipe and the inlet pipe into the heat exchange cavity at the head end of the upper heat exchange channel. Under the action of the airflow, the cooling water can flow and exchange heat in series between the various heat exchange channels. In this way, it is only necessary to timedly control the opening of the solenoid valve to achieve gravity replenishment of the quantitative cooling water in the heat exchange channel. Compared with the continuous water supply method through the circulating pump, the purpose of saving energy is achieved by relying on the gravity flow of cooling water in this application.

[0016] The present invention controls the power gear through a stepper motor to drive the entire powder guide assembly to rotate 30°, so that the guide channel is separated from the second drop port and concentrically aligned with the first drop port. The high-temperature powder enters each guide channel under the action of its own fluidity, thereby completing the high-temperature powder feeding of each guide channel. After the feeding time set by the control system is reached, the control system controls the entire powder guide assembly to rotate 30° again, so that the guide channel storing the high-temperature powder is concentrically aligned with the second drop port again. This control method realizes intermittent feeding of each guide channel, ensuring that there is a certain speed difference between the front and rear batches of high-temperature powder falling along the guide channel, thereby effectively avoiding the blockage problem of the discharge port caused by the large-scale falling of high-temperature powder, and at the same time ensuring the fluidity of the high-temperature powder in each guide channel.

[0017] The present invention arranges the first heat exchange fin and the second heat exchange fin so that the high-temperature powder falling into the heat exchange material pipe slides along each of the first heat exchange fins and the second heat exchange fins, thereby extending the residence time of the falling high-temperature powder in the heat exchange material pipe, which is beneficial to improving the heat exchange and cooling effect of the falling high-temperature powder, and effectively avoiding the poor heat exchange and cooling effect caused by the high-temperature powder falling too fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the high-temperature powder heat exchanger of the present invention.

[0020] Figure 2 This is a diagram of the internal structure of the high-temperature powder heat exchanger of the present invention.

[0021] Figure 3 for Figure 2 A magnified view of the local structure at point A.

[0022] Figure 4 It is a structural schematic diagram of the first silo mechanism in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the feed bin assembly in the present invention.

[0024] Figure 6 Schematic diagram of the structure of the powder guide assembly in the present invention.

[0025] Figure 7 This is a cross-sectional view of the structure of the powder guide assembly in the present invention.

[0026] Figure 8 It is a structural cross-sectional view of the second silo mechanism in the present invention.

[0027] Figure 9 This is a diagram of the internal structure of the heat exchange mechanism in the present invention.

[0028] Figure 10 It is a structural schematic diagram of the cover assembly in the present invention.

[0029] Figure 11 It is a structural schematic diagram of the heat exchange component in the present invention.

[0030] Figure 12 Schematic diagram of the heat exchange component at different angles in the present invention.

[0031] Figure 13 It is a structural cross-sectional view of the heat exchange pipe in the present invention.

[0032] Figure 14 It is a structural schematic diagram of the heat exchange and flow supply component in the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1-first silo mechanism, 2-second silo mechanism, 3-heat exchange mechanism, 4-powder guide assembly, 5-heat exchange assembly, 6-heat exchange flow supply assembly, 7-feed silo assembly, 8-hood assembly, 9-inlet pipe, 201-discharge channel, 202-second storage silo, 203-discharge silo, 204-third support plate, 205-fourth support plate, 206-sealed flow guide cover, 207-discharge pipe, 401-guide channel, 402-linkage shaft, 403-conical guide platform, 404-dispensing plate, 405-second support plate, 406-arc-shaped blocking plate, 407-toothed disc, 501-heat exchange pipe, 502-mounting plate, 503-heat exchange pipe, 504-heat exchange Cavity, 505-upper conducting pipe, 506-lower conducting pipe, 507-convection pipe, 508-input pipe, 509-conducting pipe, 510-output pipe, 511-first heat exchange fin, 512-second heat exchange fin, 601-water storage tank, 602-gravity heat exchange water pipe, 603-heat exchange air pipe, 604-carrying frame, 605-heat exchange air supply device, 606-solenoid valve, 607-water inlet pipe, 608-stepping motor, 609-power gear, 701-first storage bin, 702-feeding bin, 703-guide hopper, 704-first support plate, 705-first drop port, 801-heat exchange shield, 802-fifth support plate, 803-second drop port. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] For specific embodiment 1, please refer to Figure 1-14The present invention is a high-temperature powder heat exchanger, comprising a first silo mechanism 1 and a second silo mechanism 2; at least two heat exchange mechanisms 3 are installed between the first silo mechanism 1 and the second silo mechanism 2 to extend the falling path of the high-temperature powder and thus improve the heat exchange effect; the first silo mechanism 1 comprises a powder guiding assembly 4, the powder guiding assembly 4 comprises a plurality of guiding channels 401 arranged in a circumferential array, the guiding channels 401 are used to transport the high-temperature powder downward; the second silo mechanism 2 comprises a discharge channel 201 arranged in a circumferential array and corresponding one-to-one to the guide channel 401, the second silo mechanism 2 is installed with a discharge pipe group, the discharge channel 201 is used to output and collect the powder that has completed heat exchange.

[0037] The heat exchange mechanism 3 includes a heat exchange component 5, which includes a heat exchange flow channel and a plurality of heat exchange material pipes 501 arranged in a circumferential array. The heat exchange flow channel is sleeved and installed between each heat exchange material pipe 501. The heat exchange flow channels arranged above and below are connected in series. The discharge pipe group is connected to the corresponding heat exchange flow channel, so that the heat exchange effect can be improved by the flow of water and air between each heat exchange flow channel; the discharge channel 201 is connected to the corresponding heat exchange material pipe 501, and the high-temperature powder falling in the guide channel 401 enters the corresponding heat exchange material pipe 501. An inlet pipe 9 is installed at the top of the upper heat exchange flow channel; a heat exchange supply component 6 is installed coaxially with the first silo mechanism 1 below, and the heat exchange supply component 6 includes a water storage tank 601. The bottom of the water storage tank 601 is connected to a gravity-flow hot water pipe 602 connected to the inlet pipe 9, and a heat exchange gas pipe 603 is installed on the gravity-flow hot water pipe 602.

[0038] In some embodiments, as Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the first silo mechanism 1 also includes a feed silo assembly 7; wherein, the feed silo assembly 7 includes a first storage silo 701, a feed silo 702 is installed on the top of the first storage silo 701 (connected by fasteners), a guide hopper 703 is fixedly provided on the inner wall of the feed silo 702, a first support plate 704 is fixedly provided on the inner wall of the first storage silo 701, and a first drop opening 705 corresponding to the guide channel 401 is provided on the surface of the first support plate 704. The high-temperature powder in the feed silo 702 slides downward along the guide hopper 703 to each first drop opening 705, so that the high-temperature powder can enter the interior of the guide channel 401 through the first drop opening 705.

[0039] Furthermore, the powder guide assembly 4 also includes a linkage shaft 402 rotatably connected to the first support plate 704, a conical guide platform 403 fixed to the linkage shaft 402 is attached to the top of the first support plate 704, and a plurality of material stripping plates 404 are arranged in a circular array around the side surface of the conical guide platform 403, and the bottom of the material stripping plate 404 is slidably attached to the top of the first support plate 704; a second support plate 405 fixed to the linkage shaft 402 is rotatably provided on the inner wall of the first storage bin 701, and the guide channel 401 is fixedly installed on the second support plate 405, and the gap between the two adjacent guide channels 401 is large. An arc-shaped sealing plate 406 is fixed in the middle, and the top surface of the arc-shaped sealing plate 406 is flush with the top surface of the material guide channel 401. The top of the arc-shaped sealing plate 406 is fitted on the bottom of the first support plate 704. A toothed disc 407 coaxial with the second support plate 405 is provided below the second support plate 405. The material guide channel 401 is fixedly mounted on the toothed disc 407. When the material guide channel 401 is concentrically aligned with the corresponding first dropout port 705, the high-temperature powder in the feed bin 702 can slide along the material guide hopper 703, the conical material guide platform 403 and the first dropout port 705 to the inside of each material guide channel 401.

[0040] In some embodiments, as Figure 8 As shown, the second silo mechanism 2 also includes a second storage silo 202, a discharge silo 203 is installed at the bottom of the second storage silo 202, a third support plate 204 and a fourth support plate 205 are fixed on the inner wall of the second storage silo 202, and the discharge channel 201 is installed between the third support plate 204 and the fourth support plate 205, and the discharge pipe group includes a closed flow guide cover 206 fixed on the top of the fourth support plate 205, and a discharge pipe 207 connected to the closed flow guide cover 206 is installed on the side surface of the second storage silo 202. The high-temperature powder in each material guide channel 401 passes through each heat exchange pipe 501 from top to bottom and falls into each discharge channel 201, and is then discharged from each discharge channel 201 and gathered into the discharge silo 203 (in this process, the high-temperature powder completes heat exchange and cooling), and finally the high-temperature powder that has completed heat exchange and cooling is discharged from the discharge silo 203 for collection.

[0041] In some embodiments, as Figure 9 and Figure 10As shown, the heat exchange mechanism 3 also includes a cover assembly 8; wherein the cover assembly 8 includes a heat exchange shield 801 (the upper and lower heat exchange shields 801 are connected by fasteners, the second storage bin 202 is connected to the heat exchange shield 801 at its top by fasteners, and the first storage bin 701 is connected to the heat exchange shield 801 at its bottom by fasteners), a fifth support plate 802 is fixedly provided on the inner wall of the heat exchange shield 801, and a plurality of second drop openings 803 are provided in an annular array on the surface of the fifth support plate 802 (the second drop openings 803 are concentrically aligned with the corresponding heat exchange pipe 501 To ensure that the high-temperature powder can pass through the second drop port 803 and fall into the heat exchange material tube 501 below it), the top of the fifth support plate 802 is tightly fitted with the bottom of each heat exchange material tube 501 above it, the bottom of the fifth support plate 802 is tightly fitted with the top of each heat exchange material tube 501 below it, the bottom of the material guide channel 401 is tightly fitted with the top of the fifth support plate 802 below it, and the third support plate 204 is tightly fitted with the bottom of each heat exchange material tube 501 above it. The above-mentioned connection structure can ensure that the high-temperature powder can fall from top to bottom along each heat exchange material tube 501.

[0042] In some embodiments, as Figure 9 and Figure 11 As shown, the heat exchange component 5 also includes a mounting plate 502 mounted on the inner wall of the heat exchange shield 801 (connected by fasteners), and the heat exchange flow channel includes a heat exchange pipe 503 corresponding to the heat exchange material pipe 501. The heat exchange pipe 503 is fixedly arranged on the mounting plate 502, and the heat exchange pipe 503 is fixedly sleeved on the corresponding heat exchange material pipe 501. A heat exchange cavity 504 is provided between the heat exchange pipe 503 and the corresponding heat exchange material pipe 501; a plurality of upper conducting pipes 505 are provided above the mounting plate 502, and a plurality of lower conducting pipes 506 are provided below the mounting plate 502. The upper conducting pipe 505 is connected to the top of the heat exchange pipe 503 on both sides thereof, and the lower conducting pipe 506 is connected to the bottom of the heat exchange pipe 503 on both sides thereof. A transfer pipe 507 is fixedly provided at the bottom of the mounting plate 502. The flow trajectories of air flow and water flow between the various heat exchange pipes 503 on the heat exchange component 5 are shown as follows. Figure 12 As shown, Figure 12 The top view on the left is Figure 11 The top view of the structure, and the bottom view on the right is Figure 11 Bottom view of the structure.

[0043] The heat exchange pipe 503 (i.e. Figure 12 The heat exchange pipe 503 on the right side of the water inlet position or the heat exchange pipe 503 on the right side of the water outlet position) is connected to the input pipe 508 at the bottom, and the heat exchange pipe 503 at the tail end of the heat exchange flow channel (i.e. Figure 12The bottom of the heat exchange pipe 503 below the water inlet position or the heat exchange pipe 503 above the water outlet position is connected to a guide pipe 509, which is connected to the diverter pipe 507. The bottom of the diverter pipe 507 is connected to an output pipe 510. When the water flow or air flow enters the heat exchange cavity 504 of the heat exchange pipe 503 at the head end of the heat exchange flow channel from the input pipe 508, the water flow or air flow goes counterclockwise, first flowing upward from the first heat exchange cavity 504 and entering the second heat exchange cavity 504 along the first upper guide pipe 505, and then flowing downward from the second heat exchange cavity 504 and flowing along the The liquid flows along the first lower conducting tube 506 into the third heat exchange channel 504, then flows upward from the third heat exchange channel 504 and along the second upper conducting tube 505 into the fourth heat exchange channel 504, then flows downward from the fourth heat exchange channel 504 and along the second lower conducting tube 506 into the fifth heat exchange channel 504, then flows upward from the fifth heat exchange channel 504 and along the third upper conducting tube 505 into the last heat exchange channel 504, then flows downward from the last heat exchange channel 504 and flows out along the guide tube 509, the transfer tube 507 and the output pipe 510.

[0044] A certain amount of cooling water in the water storage tank 601 is transported along the inlet pipe 9 to the heat exchange cavity 504 of the heat exchange pipe 503 at the head end of the heat exchange flow channel through the gravity-flowing hot water pipe 602. The high-temperature powder in the feed bin 702 slides along the guide hopper 703, the conical guide platform 403 and the first drop port 705 to the inside of each guide channel 401, and in the process of falling along the heat exchange material pipe 501, the heat exchange air is continuously transported to the inlet pipe 9 through the heat exchange air pipe 603 and the gravity-flowing hot water pipe 602. The heat exchange air entering the inlet pipe 9 continuously flows through the upper heat exchange flow channel (that is, continuously flows through each heat exchange cavity in the upper heat exchange flow channel) in a counterclockwise direction. 504). During this process, the airflow drives the water in the heat exchange channel to continuously flow, and a water film is attached to the inner wall of the heat exchange channel 504 (i.e., a water film is attached to the inner wall of the heat exchange pipe 503 and the outer wall of the heat exchange tube 501). This process realizes the water-cooling heat exchange of each heat exchange tube 501 in the entire heat exchange channel. Subsequently, the water film is evaporated under the action of the air flow, thereby realizing the evaporation heat exchange of each heat exchange tube 501 in the entire heat exchange channel again, thereby greatly increasing the heat exchange effect of each heat exchange tube 501 in the entire heat exchange channel (i.e., improving the heat exchange effect of the high-temperature powder in each heat exchange tube 501 flowing through it).

[0045] The water flowing out of the output pipe 510 on the upper heat exchange channel enters the heat exchange cavity 504 at the head end of the lower heat exchange channel through the lower input pipe 508, and continues to flow through the lower heat exchange channel in a counterclockwise direction (that is, continues to flow through each heat exchange cavity 504 in the lower heat exchange channel). In this process, the airflow pushes the water in the heat exchange channel to continue to flow, and a water film is attached to the inner wall of the heat exchange cavity 504 (that is, a water film is attached to the inner wall of the heat exchange pipe 503 and the outer wall of the heat exchange material pipe 501). This process realizes the water-cooling heat exchange of each heat exchange material pipe 501 in the entire heat exchange channel, and then the air flow Under the action of , the water film is evaporated, thereby realizing the evaporation heat exchange of each heat exchange material tube 501 in the entire heat exchange flow channel again, thereby greatly increasing the heat exchange effect of each heat exchange material tube 501 on the entire heat exchange flow channel (that is, improving the heat exchange effect of the high-temperature powder flowing through each heat exchange material tube 501 below). In this way, the heat exchange process of each heat exchange material tube 501 on the series trajectory from top to bottom is realized, which is beneficial to improving the heat exchange and cooling effect of the high-temperature powder falling by gravity. The remaining water and air flow after flowing through the lower heat exchange flow channel are discharged through the output pipe 510, the closed flow guide cover 206 and the discharge pipe 207 below.

[0046] Specific embodiment 2, based on specific embodiment 1, as Figure 13 As shown, the input pipe 508 and the output pipe 510 between two adjacent heat exchange flow channels are tightly connected, the inlet pipe 9 is installed on the heat exchange shield 801 and is tightly connected to the input pipe 508 above, the sealed flow guide cover 206 is tightly connected to the output pipe 510 below, and a plurality of first heat exchange fins 511 and second heat exchange fins 512 with opposite inclination directions are arranged in an array on the inner wall of the heat exchange material pipe 501. Through the arrangement of the first heat exchange fins 511 and the second heat exchange fins 512, the high-temperature powder falling into the heat exchange material pipe 501 slides along each of the first heat exchange fins 511 and the second heat exchange fins 512, thereby extending the residence time of the falling high-temperature powder in the heat exchange material pipe 501, which is beneficial to improving the heat exchange and cooling effect of the falling high-temperature powder, and effectively avoiding the poor heat exchange and cooling effect caused by the high-temperature powder falling too fast.

[0047] In some embodiments, as Figure 14As shown, the heat exchange and flow supply assembly 6 also includes a support frame 604 mounted on the corresponding heat exchange shield 801 (connected by fasteners), a water storage tank 601 is mounted on the top of the support frame 604, a heat exchange air supply device 605 (conventional equipment) is mounted on the top of the water storage tank 601, a heat exchange air pipe 603 is arranged between the heat exchange air supply device 605 and the gravity water exchange pipe 602, a solenoid valve 606 is installed on the gravity water exchange pipe 602, the heat exchange air pipe 603 is between the inlet pipe 9 and the solenoid valve 606, and a solenoid valve 606 is installed on the side of the water storage tank 601 near the top. The water inlet pipe 607 (the water tank 601 can be filled with cooling water through the water inlet pipe 607), the side surface of the heat exchange shield 801 corresponding to the gear disc 407 is provided with an engagement opening, the output end of the stepping motor 608 installed on the carrier 604 is connected to the power gear 609, and the power gear 609 is engaged with the gear disc 407 through the engagement opening. When the solenoid valve 606 is controlled to be opened, a certain amount of cooling water in the water tank 601 can flow along the gravity-flowing hot water exchange pipe 602 into the inlet pipe 9. After the water supply is completed, the solenoid valve 606 is controlled to be closed.

[0048] In the initial state, the guide channel 401 is misaligned with the first drop port 705, and the second drop port 803 is concentrically aligned with the guide channel 401. The control system opens the solenoid valve 606 for a set time, so that a certain amount of cooling water in the water tank 601 flows along the gravity-flow hot water pipe 602 and the inlet pipe 9 to the heat exchange cavity 504 at the head end of the upper heat exchange flow channel. Then the solenoid valve 606 is controlled to be closed and the stepper motor 608 is started. The stepper motor 608 controls the power gear 609 to drive the entire powder guide assembly 4 to rotate 30 degrees, so that the guide channel 401 is separated from the second drop port 803 and concentrically aligned with the first drop port 705. The high-temperature powder enters each guide channel 401 under the action of its own fluidity, thereby completing each The high-temperature powder is fed into each guide channel 401. After the feeding time set by the control system is reached, the control system controls the entire powder guide assembly 4 to rotate 30° again, so that the guide channel 401 storing the high-temperature powder is concentrically aligned with the second dropout port 803 again, and at the same time controls the opening of the heat exchange air supply device 605, so that the air flow continues to enter the inlet pipe 9 along the heat exchange air pipe 603 and the gravity water exchange water pipe 602, and the water is pushed to flow along each heat exchange flow channel by the air flow. In this process, the high-temperature powder in each guide channel 401 slides downward along the corresponding heat exchange pipe 501, and the high-temperature powder is cooled by evaporation heat exchange. Finally, a batch of high-temperature powder that has completed heat exchange and cooling is discharged from the discharge bin 203 for collection.

[0049] After the heat exchange time set by the control system is reached, the control system controls the opening of the solenoid valve 606 again, allowing a certain amount of cooling water to flow along the gravity-flowing hot water pipe 602 and the inlet pipe 9 to the heat exchange cavity 504 at the head end of the upper heat exchange flow channel, and then controls the closing of the solenoid valve 606 and starts the stepper motor 608. The stepper motor 608 controls the power gear 609 to drive the entire powder guide assembly 4 to rotate 30°, so that the guide channel 401 is again separated from the second drop port 803 and concentrically aligned with the first drop port 705. The high-temperature powder enters each guide channel 401 under the action of its own fluidity, thereby completing the high-temperature powder feeding of each guide channel 401 again. After the feeding time set by the control system is reached, the control system controls the entire powder guide again. Component 4 rotates 30° so that the guide channel 401 storing high-temperature powder is again concentrically aligned with the second dropout port 803, and at the same time, the heat exchange air supply device 605 is controlled to open again, so that the air flow continues to enter the inlet pipe 9 along the heat exchange air pipe 603 and the gravity water exchange water pipe 602, and the air flow pushes the water to flow along each heat exchange flow channel. In this process, the high-temperature powder in each guide channel 401 slides downward along the corresponding heat exchange material pipe 501, and the high-temperature powder is cooled by evaporation heat exchange. Finally, another batch of high-temperature powder that has completed heat exchange and cooling is discharged from the discharge bin 203 for collection. According to the same control method as above, the heat exchange and cooling treatment of the high-temperature powder in the first storage bin 701 and the feed bin 702 can be realized successively.

[0050] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature powder heat exchanger, comprising a first silo mechanism (1) and a second silo mechanism (2); characterized in that: At least two heat exchange mechanisms (3) are installed between the first silo mechanism (1) and the second silo mechanism (2); The first silo mechanism (1) comprises a powder guide assembly (4), the powder guide assembly (4) comprising a plurality of guide channels (401) arranged in a circumferential array, the guide channels (401) being used to transport high-temperature powder downward; The second silo mechanism (2) comprises discharge channels (201) arranged in a circumferential array and corresponding one-to-one with the material guide channels (401). A discharge pipe group is installed on the second silo mechanism (2). The discharge channels (201) are used to output and collect the powder that has completed heat exchange. The heat exchange mechanism (3) includes a heat exchange assembly (5), the heat exchange assembly (5) includes a heat exchange channel and a plurality of heat exchange pipes (501) arranged in a circumferential array, the heat exchange channel is sleeved and installed between each heat exchange pipe (501), the upper and lower heat exchange channels are connected in series, and the discharge pipe group is connected to the corresponding heat exchange channel; The discharge channel (201) is connected to the corresponding heat exchange material pipe (501), and the high-temperature powder falling in the guide channel (401) enters the corresponding heat exchange material pipe (501). An inlet pipe (9) is installed at the top of the upper heat exchange flow channel; A heat exchange and flow supply assembly (6) is installed coaxially with the first silo mechanism (1) below the first silo mechanism (1). The heat exchange and flow supply assembly (6) includes a water storage tank (601). A gravity-flow hot water exchange pipe (602) connected to the inlet pipe (9) is provided at the bottom of the water storage tank (601). A heat exchange air pipe (603) is installed on the gravity-flow hot water exchange pipe (602). The heat exchange mechanism (3) further comprises a cover assembly (8); wherein the cover assembly (8) comprises a heat exchange shield (801); the heat exchange assembly (5) further comprises a mounting plate (502) mounted on the inner wall of the heat exchange shield (801); the heat exchange flow channel comprises a heat exchange pipe (503) corresponding to each heat exchange material pipe (501); the heat exchange pipe (503) is fixedly mounted on the mounting plate (502); the heat exchange pipe (503) is fixedly sleeved on the corresponding heat exchange material pipe (501); a heat exchange cavity (504) is provided between the heat exchange pipe (503) and the corresponding heat exchange material pipe (501); A plurality of upper conducting tubes (505) are provided above the mounting plate (502), and a plurality of lower conducting tubes (506) are provided below the mounting plate (502). The upper conducting tubes (505) are connected to the tops of the heat exchange pipes (503) on both sides thereof, and the lower conducting tubes (506) are connected to the bottoms of the heat exchange pipes (503) on both sides thereof. A transfer tube (507) is fixedly provided at the bottom of the mounting plate (502); An input pipe (508) connected to the bottom of the heat exchange pipe (503) at the head end of the heat exchange channel is fixed on the mounting plate (502); a flow guide pipe (509) is connected to the bottom of the heat exchange pipe (503) at the tail end of the heat exchange channel; the flow guide pipe (509) is connected to the flow transfer pipe (507); and an output pipe (510) is connected to the bottom of the flow transfer pipe (507).

2. A high-temperature powder heat exchanger according to claim 1, characterized in that: The first silo mechanism (1) further comprises a feed silo assembly (7); wherein the feed silo assembly (7) comprises a first storage silo (701), a feed silo (702) being mounted on the top of the first storage silo (701), a guide hopper (703) being fixedly arranged on the inner wall of the feed silo (702), a first support plate (704) being fixedly arranged on the inner wall of the first storage silo (701), and a first drop opening (705) corresponding one-to-one to the material guide channel (401) being provided on the surface of the first support plate (704).

3. A high-temperature powder heat exchanger according to claim 2, characterized in that: The powder guide assembly (4) further comprises a linkage shaft (402) rotatably connected to the first support disk (704); a conical guide platform (403) fixed to the linkage shaft (402) is attached to the top of the first support disk (704); a plurality of material diverting plates (404) are arranged in a circular array around the side surface of the conical guide platform (403); and the bottom of the material diverting plates (404) is slidably attached to the top of the first support disk (704); A second support disk (405) fixed to the linkage shaft (402) is rotatably provided on the inner wall of the first material storage bin (701), the material guide channel (401) is fixedly mounted on the second support disk (405), an arc-shaped blocking plate (406) is fixed between two adjacent material guide channels (401), the top surface of the arc-shaped blocking plate (406) is flush with the top surface of the material guide channel (401), the top of the arc-shaped blocking plate (406) is fitted on the bottom of the first support disk (704), a toothed disk (407) coaxial with the second support disk (405) is provided below the second support disk (405), and the material guide channel (401) is fixedly mounted on the toothed disk (407).

4. A high-temperature powder heat exchanger according to claim 3, characterized in that: The second silo mechanism (2) further comprises a second storage silo (202), a discharge silo (203) being installed at the bottom of the second storage silo (202), a third support plate (204) and a fourth support plate (205) being fixed on the inner wall of the second storage silo (202), the discharge channel (201) being installed between the third support plate (204) and the fourth support plate (205), the discharge pipe group comprising a sealed flow guide cover (206) fixed on the top of the fourth support plate (205), and a discharge pipe (207) being installed on the side surface of the second storage silo (202) and being in communication with the sealed flow guide cover (206).

5. The high-temperature powder heat exchanger according to claim 4, characterized in that: A fifth support plate (802) is fixedly provided on the inner wall of the heat exchange shield (801), and a plurality of second drop openings (803) are provided in a circumferential array on the surface of the fifth support plate (802). The top of the fifth support plate (802) is tightly fitted with the bottom of each heat exchange material tube (501) above it, the bottom of the fifth support plate (802) is tightly fitted with the top of each heat exchange material tube (501) below it, the bottom of the material guide channel (401) is tightly fitted with the top of the fifth support plate (802) below it, and the third support plate (204) is tightly fitted with the bottom of each heat exchange material tube (501) above it.

6. The high-temperature powder heat exchanger according to claim 5, characterized in that: The input pipe (508) and the output pipe (510) between two adjacent heat exchange flow channels are tightly connected. The inlet pipe (9) is mounted on the heat exchange shield (801) and tightly connected to the input pipe (508) above. The sealed flow guide cover (206) is tightly connected to the output pipe (510) below. A plurality of first heat exchange fins (511) and second heat exchange fins (512) with opposite inclination directions are arranged in an array on the inner wall of the heat exchange material pipe (501).

7. The high-temperature powder heat exchanger according to claim 6, characterized in that: The heat exchange flow supply assembly (6) further comprises a support frame (604) mounted on the corresponding heat exchange shield (801), the water storage tank (601) is mounted on the top of the support frame (604), a heat exchange air supply device (605) is mounted on the top of the water storage tank (601), the heat exchange air pipe (603) is arranged between the heat exchange air supply device (605) and the gravity water exchange pipe (602), a solenoid valve (606) is mounted on the gravity water exchange pipe (602), and the heat exchange air pipe (603) is provided between the heat exchange air supply device (605) and the gravity water exchange pipe (602). The pipe (603) is located between the inlet pipe (9) and the solenoid valve (606). A water inlet pipe (607) is installed on the side surface of the water storage tank (601) close to the top. A meshing opening is provided on the side surface of the heat exchange shield (801) corresponding to the toothed disc (407). The output end of the stepping motor (608) installed on the supporting frame (604) is connected to a power gear (609). The power gear (609) meshes with the toothed disc (407) through the meshing opening.

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