Solar heat collecting pipe heating and drying device and pipe row manufacturing method thereof

Abstract

The invention relates to the technical field of drying, and discloses a solar heat collection tube heating and drying device and a tube row manufacturing method thereof.The solar heat collection tube heating and drying device comprises a first rack, and a first heat collection module is arranged on an inclined mounting platform formed by a first-stage step and a second-stage step of the first rack; a drying cavity defined by first steel plates is installed on the outer wall of the three-stage step of the first rack, and a first partition plate is arranged in the drying cavity. A second partition is arranged on the top surface of the first partition, a third partition is arranged on the side wall of the second partition, and an air delivery pipe is arranged between the third partition and the first partition; an air inlet shutter is mounted on the first steel plate, a fan opposite to the air inlet shutter is mounted on the second partition plate, and an exhaust shutter is mounted on the first steel plate; a supporting beam located above the third partition plate is arranged on the first rack, a footstand is arranged on the supporting beam, and a drying bin used for drying corn is placed on the footstand; according to the device, the solar energy utilization rate is increased through the heat collection structure, heat collection and drying chambers are reasonably partitioned, the airflow circulation path is clear, and stable drying of corn is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying, in particular to a solar heat collecting pipe heating drying device and a pipe row manufacturing method thereof. BACKGROUND

[0002] In agricultural production, after the harvest of agricultural products such as corn, drying treatment is needed to reduce the moisture content, prevent mold, and facilitate storage and subsequent processing. Solar energy, as a clean and renewable energy source, is widely used in the field of agricultural product drying. Solar heat collecting pipe heating drying devices have become an important development direction of current agricultural drying equipment due to their energy-saving and environmentally friendly advantages.

[0003] However, the existing solar drying device has defects in actual application: the material in the existing drying bin is densely stacked, and hot air cannot penetrate, making it difficult for external air to form a stable and smooth circulation path after entering, resulting in uneven heat distribution, low corn drying efficiency, and uneven drying quality, which is difficult to meet the needs of large-scale and efficient drying. SUMMARY

[0004] The purpose of the present application is to provide a solar heat collecting pipe heating drying device and a pipe row manufacturing method thereof, which solves the problem of the existing drying bin material accumulation and the inability of hot air to penetrate.

[0005] The technical solution adopted by the present application is as follows: a solar heat collecting pipe heating drying device, comprising a first rack, the first rack is welded by a first square tube and has a three-stage ladder shape; a first heat collecting module is arranged on an installation platform formed by a first stage and a second stage of the first rack, the first heat collecting module is used to convert solar radiation into usable heat; a third stage of the first rack is a rectangular frame structure, a first steel plate is installed on the outer wall of the third stage of the first rack, the first steel plate surrounds a drying chamber, a first partition plate is horizontally arranged in the drying chamber, the first partition plate divides the drying chamber into two parts, the upper part is used for air intake, and the lower part is used for air exhaust, a second partition plate is vertically arranged on the top surface of the first partition plate, a third partition plate is horizontally arranged on the side wall of the second partition plate, a plurality of air supply pipes are installed between the first partition plate and the third partition plate, an air intake louver is installed on the first steel plate between the first partition plate and the third partition plate, a fan is installed on the second partition plate below the third partition plate, the fan is opposite to the air intake louver, and an air exhaust louver is installed on the first steel plate below the first partition plate; two support beams are symmetrically arranged on the first rack, the support beams are above the third partition plate, four foot supports are symmetrically arranged on the support beams, a drying bin is placed on the foot supports, and the drying bin is used for drying corn.

[0006] The bottom surface of the adjusting rod is provided with a first flow guide block.

[0007] The first cam is replaced by a snail-shaped cam.

[0008] The top surface of the third partition plate is provided with symmetrical guide rails, slidingly connected with sliding blocks, and a side wall of the sliding blocks is provided with a supporting rod with bristles for cleaning impurities on the third partition plate; the sliding blocks are provided with third springs connected with the guide rails, and the sliding blocks are provided with third traction ropes extending out of the drying chamber.

[0009] Further comprising a second rack, the second rack is provided with an inclined auger pipe, the auger pipe is rotatably connected with a third rotating shaft driven by a fourth motor, the side wall of the third rotating shaft is provided with a second propeller blade; the lower end of the auger pipe is provided with a hopper, and the upper end is provided with a discharge pipe, the bottom surface of the discharge pipe is rotatably connected with a distribution pipe for distributing materials to the drying chamber; the side wall of the discharge pipe is provided with a fifth support, the fifth support is rotatably connected with a first connecting rod driven by a fifth motor, the free end of the first connecting rod is hingedly connected with a second connecting rod of a basket bolt structure, the free end of the second connecting rod is rotatably connected with the waist of the distribution pipe, and a rubber ring is arranged between the distribution pipe and the door.

[0010] It comprises a third rack welded with a third party pipe, the third rack is provided with two carriages, the carriages are provided with bases, the top surfaces of the bases are provided with channel steel seats, the channel steel seats are rotatably connected with two symmetrical straight arms, the straight arms are provided with carriers, and the carriers are provided with second heat collection modules; the bases are hingedly connected with telescopic rods, the free ends of the telescopic rods are hingedly connected with the carriers, and the telescopic rods are used to drive the second heat collection modules to switch between horizontal and vertical positions; the third rack is provided with a drying chamber, and the water outlet pipe of the second heat collection module is connected with a finned heat exchange pipe located in the drying chamber through a hose.

[0011] The second heat collection module comprises a double-layer coated vacuum glass heat collection pipe, a hot superconducting pipe row, a heat transfer fin, and a fluid heat exchange flow channel; the double-layer coated vacuum glass heat collection pipe comprises, from the outside to the inside, a high borosilicate glass outer pipe, a vacuum layer, and a high borosilicate glass inner pipe, the head of the high borosilicate glass outer pipe is provided with a second support seat connected with the carrier, the gap between the high borosilicate glass outer pipe and the inner pipe head is provided with an elastic seat, the outer surface of the high borosilicate glass inner pipe is coated with an absorption coating, and the vacuum layer is internally provided with a barium-aluminum getter; the hot superconducting pipe row is welded and communicated by a plurality of vertical transmission pipes and horizontal transmission pipes, the vertical transmission pipe is provided with a heat transfer fin outside, the upper end of the vertical transmission pipe is fixed with the high borosilicate glass inner pipe through a fixed sealing plug, and is fixed with the inner shell of the fluid heat exchange flow channel through an elastic sealing ring, and the water outlet pipe of the inner shell is connected with the finned heat exchange pipe through a hose.

[0012] The opposite face of the carrier is provided with equidistant U-shaped second hinge seats, the third connecting rod is hinged on the second hinge seats, the free end of the third connecting rod is hinged with a support provided with a second reflector, the support is provided with a limiting rod elastically connected with the support, and the third connecting rod is provided with a positioning seat matched with the limiting rod.

[0013] The third rack is hinged with a door plate, the door plate forms a closed shell for covering the second heat collecting module, and the inner wall of the door plate is bonded with an insulation board.

[0014] A manufacturing method of the pipe row in the solar heat collecting pipe heating and drying device comprises the following steps,

[0015] (1) Preparation and composite forming of pipe body base material: adopting oxygen-free copper TU1 outer layer and industrial pure titanium TA2 inner layer with a thickness ratio of 3:1, a composite pipe blank with metallurgical bonding is formed by vacuum rolling, after being cut into vertical and horizontal transmission pipe blanks, end face fine turning, outer wall polishing, ultrasonic oil removal, weak acid rinsing and hot air drying are sequentially performed;

[0016] (2) Precision processing of inner wall micro channel and composite passivation: V-shaped micro channel array is processed on the inner wall of the pipe by femtosecond laser, and composite passivation treatment is performed on the pipe blank, the titanium inner layer is passivated by low-temperature oxidation, and the copper outer layer and the transition layer are treated by low-corrosion composite passivation solution, and rinsing and drying are performed after passivation;

[0017] (3) Forming, assembling and vacuum brazing of heat transfer fins: 3003 aluminum alloy strips are punched into arc-shaped or straight strip-shaped heat transfer fins, which are respectively wrapped around the vertical and horizontal transmission pipes at corresponding angles, and are vacuum brazed by using aluminum-copper adaptive silver-based filler metal, and flaw detection is performed after welding, and micro stress cold bending forming is adopted for the pipe blanks that need to be bent, and the pipe sections are connected;

[0018] (4) Pipe row splicing and sealing structure pre-installation: the vertical transmission pipe and the horizontal collecting pipe are connected by argon arc welding, and the air tightness is preliminarily detected, the fixed sealing plug is welded on the upper end of the vertical pipe, and the high-temperature metal sealing assembly is pre-installed at the butt joint position;

[0019] (5) Working medium filling and sealing: deionized water + corrosion inhibitor is used as the working medium, the pipe row is filled with liquid and exhaust quantitatively, and after low-temperature heating and exhaust, high-temperature melting sealing is performed, and fine leak detection is completed;

[0020] (6) Working medium activation and comprehensive performance detection: the pipe row that passes the sealing test is preheated to 80 DEG C, and the working medium is activated by cooperating with inclination and low-frequency vibration, and the pipe row is subjected to thermodynamic and reliability detection, and the manufacturing is completed after passing the test.

[0021] The application has the beneficial effects that: the device realizes the integrated layout of heat collection and drying structure through the three-stage ladder-shaped rack, adopts double-layer coated vacuum heat collection pipes and heat superconducting pipe rows to greatly improve the solar light-heat conversion efficiency and heat transmission rate, cooperates with the heat collection module and the light-reflecting plate with switchable angles to further improve the solar utilization rate; the staggered square pipes in the drying bin, the openable and closable inclined net plate, the cam-driven adjustment and the flow guiding and stirring structure ensure that the materials are evenly heated and the airflow is smooth, realize the switching of static and flowing drying, cooperate with the automatic feeding, uniform material distribution and forced discharging structure, and realize the full-automatic operation, effectively solve the problems of low heat collection efficiency, uneven material drying, easy blocking, difficult discharging and complicated operation of the traditional solar drying device, the overall device structure is compact, energy-saving and environment-friendly, stable and reliable in operation, and the drying efficiency and quality of corn and other materials are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective structural schematic diagram of the application.

[0023] Figure 2 It is a front view structural schematic diagram of the application.

[0024] Figure 3 It is a side view structural schematic diagram of the application.

[0025] Figure 4 It is a side view sectional structural schematic diagram of the application.

[0026] Figure 5 It is a side view sectional structural schematic diagram of the gas conveying pipe.

[0027] Figure 6 It is a perspective structural schematic diagram of the first heat collection module.

[0028] Figure 7 It is a side view sectional structural schematic diagram of the elastic seat.

[0029] Figure 8 It is a sectional structural schematic diagram of the arc-shaped fin.

[0030] Figure 9 It is a sectional structural schematic diagram of the straight strip fin.

[0031] Figure 10 It is a front view sectional structural schematic diagram of the side net plate and the bottom net plate.

[0032] Figure 11 It is a side view sectional structural schematic diagram of the adjusting rod.

[0033] Figure 12 It is a front view sectional structural schematic diagram of the inclined net plate.

[0034] Figure 13 It is a perspective structural schematic diagram of the bin door.

[0035] Figure 14 is a side view schematic diagram of the reset spring.

[0036] Figure 15 is a side view schematic diagram of the first traction rope.

[0037] Figure 16 is a front view schematic diagram of the first traction rope.

[0038] Figure 17 is a side view schematic diagram of the second traction rope.

[0039] Figure 18 is a front view schematic diagram of the second traction rope.

[0040] Figure 19 is a side view schematic diagram of the third traction rope.

[0041] Figure 20 is a perspective view schematic diagram of the second frame.

[0042] Figure 21 is a side view schematic diagram of the second propeller blade.

[0043] Figure 22 is a perspective view schematic diagram of the cloth pipe.

[0044] Figure 23 is a front view schematic diagram of the third frame.

[0045] Figure 24 is a perspective view schematic diagram of the second heat collecting module.

[0046] Figure 25 is a top view schematic diagram of the second heat collecting module.

[0047] Figure 26 is a top view schematic diagram of the finned heat exchange pipe.

[0048] Figure 27 is a front view schematic diagram of the support.

[0049] Figure 28 is a front view schematic diagram of the second light reflecting plate.

[0050] Figure 29 is a front view schematic diagram of the third connecting rod.

[0051] Figure 30 is a front view schematic diagram of the door plate.

[0052] In the figure: 1, the first rack; 2, the first square tube; 3, the first level; 4, the second level; 5, the installation platform; 6, the first heat collection module; 7, the third level; 8, the first steel plate; 9, the drying chamber; 10, the first partition; 11, the second partition; 12, the third partition; 13, the gas conveying pipe; 14, the air inlet shutter; 15, the fan; 16, the air outlet shutter; 17, the support beam; 18, the foot; 19, the drying bin; 20, the double-layer coated vacuum glass heat collection tube; 21, the hot superconducting pipe row; 22, the heat transfer fin; 23, the fluid heat exchange channel; 24, the high borosilicate glass outer tube; 25, the vacuum layer; 26, the high borosilicate glass inner tube; 27, the vertical transmission pipe; 28, the first support seat; 29, the elastic seat; 30, the absorbing coating; 31, the barium-aluminum getter; 32, the horizontal transmission pipe; 33, the fixed sealing plug; 34, the elastic sealing ring; 35, the arc fin; 36, the straight strip fin; 37, the inner shell; 38, the heat preservation material; 39, the heat preservation shell; 40, the water inlet and outlet; 41, the bent transmission pipe; 42, the heat dissipation fin; 43, the side mesh plate; 44, the bottom mesh plate; 45, the second square tube; 46, the limiting strip; 47, the first hinged seat; 48, the inclined mesh plate; 49, the strip rod; 50, the strip plate; 51, the adjusting rod; 52, the return spring; 53, the first rotating shaft; 54, the first motor; 55, the first cam; 56, the support rod; 57, the carrier roller; 58, the discharge pipe; 59, the second rotating shaft; 60, the second motor; 61, the first propeller blade; 62, the discharge valve; 63, the first flow guide block; 64, the bin door; 65, the observation window; 66, the shell; 67, the first reflecting plate; 68, the second cam; 69, the first support; 70, the rotating plate; 71, the roller; 72, the first traction rope; 73, the second support; 74, the wire tube; 75, the impact block; 76, the first spring; 77, the third support; 78, the eccentric arm; 79, the third motor; 80, the ring seat; 81, the second traction rope; 82, the fourth support; 83, the rope wheel; 84, the pressing plate; 85, the second spring; 86, the second flow guide block; 87, the guide rail; 88, the sliding block; 89, the support rod; 90, the brush; 91, the third spring; 92, the third traction rope; 93, the second rack; 94, the auger pipe; 95, the third rotating shaft; 96, the fourth motor; 97, the second propeller blade; 98, the bin; 99, the discharge pipe; 100, the cloth pipe; 101, the fifth support; 102, the first connecting rod; 103, the fifth motor; 104, the second connecting rod; 105, the rubber ring; 106, the third rack; 107, the third square tube; 108, the carrier; 109, the base; 110, the channel steel seat; 111, the straight arm; 112, the carrier; 113, the second heat collection module; 114, the telescopic rod; 115, the hose; 116, the fin heat exchange pipe; 117, the second support seat; 118, the second hinged seat; 119, the third connecting rod; 120, the support; 121, the second reflecting plate; 122, the limiting rod; 123, the positioning seat; 124, the door plate; 125, the closed shell; 126, the heat preservation plate. DETAILED DESCRIPTION

[0053] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like elements or features, which detailed description is set out below with reference to the attached drawing figures. The embodiments described below are exemplary, and are not intended to limit the present application.

[0054] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0055] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth" are used only for descriptive purposes, and are not intended to indicate or imply relative importance or a specific number of the technical features indicated.

[0056] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; for those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0057] As Figures 1-5As shown, embodiment one, a solar heat collecting pipe heating drying device, comprising a first rack 1, the first rack 1 is welded by a first square tube 2, and the shape is a three-stage ladder 7 shape; The first rack 1 one-stage ladder 3 and two-stage ladder 4 form an inclined installation platform 5, the installation platform 5 is provided with a first heat collecting module 6, the first heat collecting module 6 is used to convert solar radiation into usable heat; The three-stage ladder 7 of the first rack 1 is a rectangular frame structure, the first rack 1 three-stage ladder 7 outer wall is installed with the first steel plate 8, the first steel plate 8 surrounds a drying chamber 9, the drying chamber 9 is installed with the first baffle 10 arranged horizontally, the first baffle 10 divides the drying chamber 9 into two parts, the upper side is used for air inlet, the lower side is used for exhaust, the top surface of the first baffle 10 is installed with the second baffle 11 arranged vertically, the side wall of the second baffle 11 is installed with the third baffle 12 arranged horizontally, a plurality of gas conveying pipes 13 are installed between the first baffle 10 and the third baffle 12, the first steel plate 8 between the first baffle 10 and the third baffle 12 is installed with an air inlet louver 14, the second baffle 11 below the third baffle 12 is installed with a fan 15, the fan 15 is opposite to the air inlet louver 14, the first steel plate 8 below the first baffle 10 is installed with an exhaust louver 16; The first rack 1 is installed with two support beams 17 arranged symmetrically, the support beam 17 is located above the third baffle 12, the support beam 17 is installed with four foot supports 18 arranged symmetrically, the foot support 18 is placed with a drying bin 19, the drying bin 19 is used for drying corn. The technical problem solved: the existing solar drying device rack structure is unreasonable, the heat collecting and drying chamber layout is chaotic, the air circulation is not smooth, and the corn cannot be efficiently dried. Advantageous effects: the three-stage ladder 7 rack structure is compact, the heat collecting and drying chamber is reasonably divided, the air circulation path is clear, and the corn is stably dried.

[0058] As Figures 6-9As shown, as the optimization of embodiment one, the first heat collection module 6 includes a double-layer coated vacuum glass heat collection tube 20, a thermal superconducting tube row 21, a heat transfer fin 22, and a fluid heat exchange channel 23. The double-layer coated vacuum glass heat collection tube 20, from outside to inside, includes a high borosilicate glass outer tube 24, a vacuum layer 25, a high borosilicate glass inner tube 26, a vertical transmission tube 27, and a heat transfer fin 22. The head of the high borosilicate glass outer tube 24 is provided with a first support seat 28 connected with the first level step 3 of the first rack 1. An elastic seat 29 is arranged at the gap between the head of the high borosilicate glass outer tube 24 and the high borosilicate glass inner tube 26. The outer surface of the high borosilicate glass inner tube 26 is coated with an absorption coating 30 composed of a light transmission film, a selective absorption film, and an infrared reflection film. The vacuum layer 25 has an internal pressure of ≤5×10⁻³ Pa and is provided with a barium-aluminum getter 31. The thermal superconducting tube row 21 is formed by welding a plurality of vertical transmission tubes 27 and horizontal transmission tubes 32 in communication to form a common vapor-liquid heat exchange space. The vertical transmission tube 27 and the horizontal transmission tube 32 are both provided with a heat transfer fin 22. The upper end of the vertical transmission tube 27 is fixed with the high borosilicate glass inner tube 26 through a fixed sealing plug 33 and is fixed with the inner shell 37 of the fluid heat exchange channel 23 through an elastic sealing ring 34. The heat transfer fin 22 includes an arc-shaped fin 35 and a straight strip-shaped fin 36. The arc-shaped fin 35 outside the vertical transmission tube 27 is connected with the inner wall of the high borosilicate glass inner tube 26 and can quickly transfer the light-heat converted heat to the phase change energy storage material and the vertical transmission tube 27. The horizontal transmission tube 32 is provided with a straight strip-shaped heat transfer fin 22. The fluid heat exchange channel 23 is a key component for heat output and is composed of an inner shell 37, a heat preservation material 38, and a heat preservation outer shell 39. The inner shell 37 is provided with water inlet and outlet ports 40. The horizontal transmission tube 32 of the thermal superconducting tube row 21 is arranged in a concentric circle with the fluid heat exchange channel 23. The side wall of the horizontal transmission tube 32 is connected with equally spaced bending transmission tubes 41. The horizontal section of the bending transmission tube 41 extends into the drying chamber 9. The horizontal section of the bending transmission tube 41 is located above the drying bin 19. The outer wall of the horizontal section of the bending transmission tube 41 is connected with a heat dissipation fin 42. The technical problems solved by the present application are the low light-heat conversion efficiency, slow heat transmission, unreasonable heat exchange structure, and inefficient heat delivery to the drying chamber of the existing solar heat collection module. The beneficial effects of the present application are that the low pressure of the vacuum layer 25 and the getter improve the heat preservation effect, the multi-layer coating improves the light-heat absorption efficiency, the thermal superconducting tube row 21 and the fin accelerate the heat transmission, the concentric circle heat exchange channel improves the heat exchange efficiency, and the bending transmission tube 41 directly dissipates heat with high utilization rate.

[0059] As Figures 10-12As shown, as the optimization of embodiment one, the drying bin 19 comprises side net plates 43, a V-shaped bottom net plate 44, four side net plates 43 and the bottom net plate 44 form a groove-shaped storage cavity; the second square tubes 45 arranged from top to bottom are connected to the gaps between the opposite side net plates 43, and the horizontal adjacent second square tubes 45 have equal spacing, the positions of the adjacent rows of second square tubes 45 are staggered, and the positions of the adjacent columns of second square tubes 45 are staggered. In this embodiment, seven rows and nine columns of second square tubes 45 are provided, the top surface of the second square tube 45 is connected to the symmetrically arranged limiting strips 46, the side wall of the second square tube 45 is connected to the symmetrically arranged first hinge seats 47, the first hinge seats 47 are hingedly connected to the inclined net plates 48, the lower end of the inclined net plate 48 is connected to the strip-shaped rod 49 matched with the limiting strip 46, when the inclined net plate 48 abuts against the limiting strip 46, the material to be dried is limited between two inclined net plates 48, and the material to be dried will not completely fill the drying unit formed by four inclined net plates 48, which facilitates the flow of hot air. When the inclined net plate 48 rotates downward, the material to be dried will automatically fall, and flow-type drying or static-type drying can be performed. The top surface of the side net plate 43 is connected to the strip plate 50, the strip plate 50 is slidingly connected to the adjusting rod 51, and the adjusting rod 51 is slidingly connected to the second square tube 45. The cross-sectional shape of the adjusting rod 51 is T-shaped, and the side wall of the adjusting rod 51 located above the strip plate 50 is connected to the return spring 52; the side wall of the first steel plate 8 is rotatably connected to the first rotating shaft 53, the first rotating shaft 53 is driven by the first motor 54, the side wall of the first rotating shaft 53 is connected to the first cam 55 arranged at equal intervals, the shape of the first cam 55 is eccentric, and the installation angles of the first cam 55 are different, so that the first cam 55 intermittently presses the adjusting rod 51; the side wall of the adjusting rod 51 located in the drying unit is connected to the support rod 56, the shape of the support rod 56 is Y-shaped, the free end of the support rod 56 is rotatably connected to the supporting roller 57, the supporting roller 57 is rollingly connected to the bottom surface of the inclined net plate 48, and the opening and closing of the inclined net plate 48 is controlled by the lifting of the adjusting rod 51. The technical problems solved are: the existing drying bin 19 has the problems of dense material accumulation, inability of hot air to penetrate, uneven drying, inability to switch between flow-type and static-type drying, and poor discharging. Movement process: the side net plate 43 and the V-shaped bottom net plate 44 form a groove-shaped storage cavity, the second square tubes 45 are arranged staggered, the inclined net plate 48 rotates through the first hinge seat 47, and when it abuts against the limiting strip 46, a drying unit is formed to limit the material, and when it rotates downward, the material falls, the first motor 54 drives the first rotating shaft 53 to intermittently press the adjusting rod 51 through the eccentric first cam 55, the return spring 52 resets, the Y-shaped support rod 56 drives the supporting roller 57 to roll to control the opening and closing of the inclined net plate 48. Advantageous effects: the staggered arrangement of the second square tubes 45 ensures the flow of hot air, the inclined net plate 48 can switch the drying mode, the adjusting rod 51 cooperates with the cam supporting roller 57 to realize automatic control of the inclined net plate 48, and the uniformity of material drying is improved.

[0060] As Figure 11As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.

[0061] As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient. Figure 10 As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.

[0062] Figure 13 As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.

[0063] As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient. Figure 13 As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.

[0064] Figure 13 As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.

[0065] As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient. Figure 14 As shown in the embodiment one, the bottom plate 44 is provided with a discharge pipe 58, and the second rotating shaft 59 is rotatably connected in the discharge pipe 58, and the second rotating shaft 59 is driven by the second motor 60, and the side wall of the second rotating shaft 59 is connected with the first propeller blade 61, and the discharge valve 62 is arranged on the discharge pipe 58 outside the first steel plate 8. The technical problem solved by the embodiment is to improve the discharge efficiency of the dried corn and realize the quantitative and orderly discharge. The beneficial effect is that the propeller blade realizes the forced discharge, the discharge valve 62 can control the discharge amount and discharge time, and the discharge is smooth and efficient.​​

[0066] As Figure 15 and 16 As shown in the optimization of Embodiment One, the side wall of the first rotating shaft 53 is provided with a second cam 68, which is a cylindrical cam. The first support 69 is connected to the side net plate 43. The rotating plate 70 is rotatably connected to the first support 69. The free end of the rotating plate 70 is rotatably connected to the roller 71, which is located directly above the second cam 68 and is in rolling connection with the second cam 68. The first traction rope 72 is connected to the side wall of the rotating plate 70. The outer inclined surface of the bottom net plate 44 is connected to the second support 73, which is in the shape of L. The wire tube 74 is connected to the side net plate 43 and is in sliding connection with the first traction rope 72. The free end of the first traction rope 72 is connected to the impact block 75, which is used to intermittently impact the bottom net plate 44, facilitating the discharge of the dried materials. The side wall of the first traction rope 72 is sleeved with the first spring 76, which is in elastic connection between the impact block 75 and the wire tube 74. The technical problem solved is that the materials adhered to the bottom net plate 44 cannot be smoothly discharged. The movement process is as follows: the first motor 54 drives the first rotating shaft 53 to rotate the second cylindrical cam, which pushes the roller 71 to drive the rotating plate 70 to swing. The first traction rope 72 pulls the impact block 75 to intermittently impact the bottom net plate 44. The first spring 76 resets the impact block 75. The beneficial effect is that the intermittent impact of the bottom net plate 44 shakes off the adhered materials, ensuring smooth discharge and preventing material residue from blocking.

[0067] As Figure 17 and 18As shown, as an optimization of Embodiment 1, a third support 77 is connected to the side mesh plate 43, and an eccentric arm 78 is rotatably connected to the third support 77. The eccentric arm 78 is driven by a third motor 79. A ring seat 80 is rotatably connected to the free end of the eccentric arm 78, and a second traction rope 81 is connected to the ring seat 80. A fourth support 82 is connected to the side mesh plate 43, and a rope wheel 83 is rotatably connected to the fourth support 82. The rope wheel 83 is located above the eccentric arm 78, and the second traction rope 81 is wound around the rope wheel 83. The lower end of the second traction rope 81 is connected to... A pressure plate 84 is located outside the bottom mesh plate 44. A second spring 85 is fitted on the side wall of the second traction rope 81, and the second spring 85 is elastically connected between the pressure plate 84 and the bottom mesh plate 44. The second traction rope 81 is slidably connected to the second square tube 45. A second guide block 86, which is spindle-shaped, is connected to the side wall of the second traction rope 81 located inside the drying unit. The second guide block 86 is continuously driven by the second traction rope 81 to move up and down, stirring the material to be dried in the drying unit and improving the drying efficiency. Technical problem solved: Low drying efficiency and uneven heating due to static accumulation of material in the drying chamber 19. Movement process: The third motor 79 drives the eccentric arm 78 to rotate, and the ring seat 80 drives the second traction rope 81 to move up and down. The spindle-shaped second guide block 86 moves up and down with the traction rope, stirring the material. The second spring 85 assists in resetting. Beneficial effects: Continuous stirring of the material ensures uniform heating, significantly improving drying efficiency and avoiding localized insufficient drying.

[0068] like Figure 19 As shown, as an optimization of Embodiment 1, the top surface of the third partition 12 is equipped with symmetrically arranged guide rails 87. A slider 88 is slidably connected to the guide rails 87, and a support rod 89 is connected to the opposite slider 88. The sidewall of the support rod 89 has bristles 90, which are used to clean impurities on the third partition 12. A third spring 91 is connected to the slider 88 and is connected to the guide rails 87. A third traction rope 92 is connected to the slider 88 and extends to the outside of the drying chamber. Technical problem solved: The third partition 12 easily accumulates impurities, blocking the airflow channel and affecting air intake. Movement process: Pulling the third traction rope 92 causes the slider 88 to slide along the guide rails 87. The support rod 89 and brush bristles 90 clean impurities from the third partition 12, and the third spring 91 resets the slider 88. Beneficial effects: It facilitates the cleaning of impurities from the partition, ensures smooth air intake, stable airflow circulation, and maintains drying efficiency.

[0069] like Figures 20-22As shown, as an embodiment one optimization, it further includes a second rack 93, a tilt arrangement of auger tube 94 is installed on the second rack 93, the third rotating shaft 95 is rotatably connected on the auger tube 94, the third rotating shaft 95 is driven by the fourth motor 96, the side wall of the third rotating shaft 95 is connected with the second propeller blade 97, the lower end of the auger tube 94 is connected with the bunker 98, the upper end of the auger tube 94 is connected with the discharge pipe 99, the bottom surface of the discharge pipe 99 is rotatably connected with the distribution pipe 100, the distribution pipe 100 is used to distribute materials to the drying bin 19, the side wall of the discharge pipe 99 is connected with the fifth support 101, the first connecting rod 102 is rotatably connected on the fifth support 101, the first connecting rod 102 is driven by the fifth motor 103, the free end of the first connecting rod 102 is hingedly connected with the second connecting rod 104, preferably the structure of the second connecting rod 104 is basket bolt, so that the length of the second connecting rod 104 is adjustable, the free end of the second connecting rod 104 is rotatably connected with the waist of the distribution pipe 100, the reciprocating swing of the distribution pipe 100 is generated by the fifth motor 103, which ensures the uniformity of the distribution. The rubber ring 105 is installed between the distribution pipe 100 and the bin door 64, which ensures the intermittent swing of the distribution pipe 100. The technical problems solved: the problems of low efficiency of manual feeding and uneven distribution affecting drying effect. Movement process: the fourth motor 96 drives the third rotating shaft 95 to drive the second propeller blade 97 to lift the materials in the bunker 98 through the auger tube 94, the distribution pipe 100 of the discharge pipe 99 is reciprocatingly swung by the fifth motor 103, the first connecting rod 102 and the second connecting rod 104, and the rubber ring 105 ensures the sealing of the swing. Advantageous effects: automatic feeding is realized, the swing distribution pipe 100 ensures uniform laying of materials, and the drying uniformity and efficiency are improved.

[0070] As Figure 23As shown, Embodiment 2 differs from Embodiment 1 in that it includes a third frame 106. The third frame 106 is constructed by welding third-party tubes 107. The third frame 106 has two platforms 108, on which bases 109 are mounted. A channel steel seat 110 is connected to the top surface of the base 109. Two symmetrically arranged straight arms 111 are rotatably connected to the channel steel seat 110. A carrier 112 is connected to the straight arms 111, and a second heat collection module 113 is mounted on the carrier 112. An extension is hinged to the base 109. The telescopic rod 114 is hinged at its free end to the carrier 112. The telescopic rod 114 allows the second heat-collecting module 113 to switch between horizontal and vertical positions. When horizontal, the side of the carrier 112 is flush with the channel steel base 110. When extended, it expands the heat-collecting area and increases the heat collection capacity. A drying chamber 9 is mounted on the third frame 106. The water outlet pipe of the second heat-collecting module 113 is connected to a finned heat exchange tube 116 via a flexible hose 115. The finned heat exchange tube 116 is located inside the drying chamber 9. The technical problem solved addresses the issues of the fixed angle of the heat-collecting module in Embodiment 1, which limits the heat-collecting area, results in insufficient heat collection, and prevents the heat-collecting components from switching states. Movement process: The telescopic rod 114 extends and retracts, causing the carrier 112 to switch between horizontal and vertical positions. The heat from the second heat-collecting module 113 is transported to the drying chamber 9 via the flexible hose 115 and the finned heat exchange tube 116. Beneficial effects: The heat collection module can be angled and expanded to increase the heat collection area and heat collection capacity, adapting to different lighting environments.

[0071] like Figures 24-26 As shown, as an optimization of Embodiment 2, the second heat collection module 113 includes a double-layer coated vacuum glass heat collection tube 20, a heat superconducting pipe array 21, heat transfer fins 22, and a fluid heat exchange channel 23. The double-layer coated vacuum glass heat collection tube 20 consists of a borosilicate glass outer tube 24, a vacuum layer 25, a borosilicate glass inner tube 26, a vertical transmission pipe 27, and heat transfer fins 22, arranged from the outside to the inside. A second support base 117 is installed at the head of the borosilicate glass outer tube 24, and the second support base 117 is connected to the carrier 112; an elastic seat 29 is installed at the gap between the heads of the borosilicate glass outer tube 24 and the borosilicate glass inner tube 26; the outer surface of the borosilicate glass inner tube 26 is coated with an absorption coating 30; the air pressure inside the vacuum layer 25 is ≤5×10⁻³Pa, and a barium aluminum getter 31 is built in. The superheated heat exchanger 21 consists of multiple vertical transmission pipes 27 welded together with horizontal transmission pipes 32, forming a shared vapor-liquid heat exchange space. Each vertical transmission pipe 27 has heat transfer fins 22 on its exterior. The upper end of each vertical transmission pipe 27 is fixed to a high borosilicate glass inner tube 26 via a fixed sealing plug 33, and to the inner shell 37 of the fluid heat exchange channel 23 via an elastic sealing ring 34. The water outlet pipe of the inner shell 37 is connected to a finned heat exchange tube 116 via a flexible hose 115. Beneficial effects: It retains the efficient photothermal conversion and heat transfer structure, adapts to the angle switching structure, and ensures stable heat delivery to the drying chamber.

[0072] As Figures 27-29 shown, as the optimization of embodiment two, the opposite surface of the carrier 112 is mounted with second articulated seats 118 arranged at equal intervals, the second articulated seats 118 are shaped as U-shaped, the second articulated seats 118 are articulated with third connecting rods 119, the free end of the third connecting rods 119 is articulated with brackets 120, the brackets 120 are mounted with second reflectors 121, the brackets 120 are mounted with limiting rods 122, the limiting rods 122 are elastically connected with the brackets 120, the third connecting rods 119 are connected with positioning seats 123, when the second heat collecting module 113 is unfolded, the brackets 120 can be unfolded, when the third connecting rods 119 are vertical, the limiting rods 122 are just inserted into the positioning seats 123. The technical problem solved: the problem of insufficient light receiving amount and the problem of the reflective component unable to be unfolded with the heat collecting module in embodiment two. The movement process: after the second heat collecting module 113 is unfolded, the third connecting rods 119 drive the brackets 120 and the second reflectors 121 to unfold, and the limiting rods 122 are inserted into the positioning seats 123 to be fixed. The beneficial effect: the reflective plate is unfolded with the heat collecting module, the light receiving amount is further improved, the heat collection is increased, and the positioning structure ensures stable unfolding.

[0073] As Figure 30 shown, as the optimization of embodiment two, the third rack 106 is articulated with a door plate 124, the door plate 124 encloses a closed shell 125, the closed shell 125 is used to cover the second heat collecting module 113 to prevent the second module from being broken. Preferably, the inner wall of the door plate 124 is bonded with a heat preservation plate 126, which can prevent the second heat collecting module 113 from being damaged by freezing. The technical problem solved: the problem of easy breakage when the second heat collecting module 113 is idle and the problem of easy freezing damage in low temperature environment. The beneficial effect: the closed shell 125 protects the heat collecting module to prevent breakage, the heat preservation plate 126 avoids freezing damage in low temperature, and the service life of the heat collecting module is prolonged.

[0074] Further, a manufacturing method of a pipe row in a solar heat collecting pipe heating and drying device is provided, and the specific steps are as follows:

[0075] 1. Preparation and composite forming of pipe body base material

[0076] Oxygen-free copper TU1 (outer layer) + industrial pure titanium TA2 (inner layer) is used as the base material, and the thickness ratio is 3:1. The copper-titanium composite pipe blank is formed by vacuum rolling and composite to realize interface delamination-free and crack-free, the overall thermal conductivity is ≥280 W / (m·K), the pressure strength is ≥15 MPa, and the working temperature resistance range is-50-350℃. According to the structure design, the composite pipe blank is cut into: vertical transmission pipe blank: pipe diameter Φ12-30mm, wall thickness 0.6-1.2mm; horizontal transmission pipe blank: pipe diameter Φ36-60mm, wall thickness 1.2-3.0mm. The pipe blank is sequentially subjected to end face fine turning, outer wall polishing, ultrasonic oil removal, weak acid rinsing, and hot air drying to ensure that the surface cleanliness meets the welding and precision machining requirements.

[0077] 2. Inner wall micro-channel precision machining and composite passivation

[0078] A V-shaped micro-groove array is machined on the inner wall of the vertical / horizontal transmission pipe by using femtosecond laser inner wall etching technology, with a groove depth of 80±5 μm, a groove width of 150±10 μm, and a groove spacing of 200 μm, to form a continuous capillary core structure. The pipe blank after micro-groove machining is subjected to copper-titanium composite passivation treatment: the titanium inner layer is subjected to low-temperature oxidation passivation to improve corrosion resistance and wettability; the copper outer layer / transition layer is subjected to low-corrosion composite passivation liquid treatment to avoid strong acid corrosion. After passivation, rinse and dry, the liquid-phase hydrophilic contact angle of the inner wall of the pipe is ≤10°, and the overall capillary pumping force is ≥2.5 kPa, meeting the high-speed reflux requirement of the phase change working medium.

[0079] 3. Heat transfer fin forming, assembling and vacuum brazing

[0080] An arc / straight strip-shaped heat transfer fin is formed by stamping a 0.2 mm thick 3003 aluminum alloy strip, and the metal bare surface is reserved on the fin welding surface, and the non-welding surface is subsequently subjected to insulation protection treatment. The fin assembly method is as follows: the arc-shaped fin is attached to the vertical transmission pipe in a 90° ring-around manner, and the rib base end spacing is 9.5-23.5 mm; the straight strip-shaped fin is attached to the horizontal transmission pipe in a 45° ring-around manner, and the rib base end spacing is 23.5-35.5 mm. An aluminum-copper adaptive silver-based filler metal is used for welding in a vacuum brazing furnace at 580-620°C for 8-12 min, and X-ray detection is performed after welding to ensure that the weld strength is ≥70 MPa and the interface thermal resistance is ≤0.008 K・m² / W. For transmission pipe blanks that need to be bent, micro-stress cold bending forming is used to avoid damaging the inner wall micro-grooves. After forming, the vertical pipe is welded at one end to the horizontal pipe at equal intervals, and the outer wall of the horizontal section is simultaneously welded with heat dissipation fins, and the process parameters are the same as above.

[0081] 4. Tube row splicing and sealing structure pre-installation

[0082] Multiple vertical transmission pipes are connected in communication with the horizontal header pipe at a designed spacing by using argon arc welding to form a shared vapor-liquid two-phase heat exchange cavity, and after welding, 0.8-1.2 MPa air tightness preliminary inspection is performed, and the pressure is maintained for 30 min without leakage. A fixed sealing plug is welded on the upper end of the vertical transmission pipe, and a standardized charging and exhausting channel is reserved; at the joint position of the tube row and the external fluid heat exchange channel, a high-temperature resistant metal sealing assembly is pre-installed to replace the conventional elastic sealing ring, which is suitable for high-temperature long-term working scenarios.

[0083] 5. Working medium charging and high-reliability sealing

[0084] The working medium is selected as deionized water + corrosion inhibitor, which is suitable for solar low-temperature drying conditions, safe and free of flammable and explosive risks. The liquid filling and steam discharge method is adopted for quantitative filling, and the working medium filling amount is 28±2% of the total internal volume of the tube row. After filling, the tube row is heated and exhausted at low temperature to discharge the internal non-condensable gas, and then the charging and exhaust channel and the sealing plug exhaust port are high-temperature fusion sealed. After sealing, fine leak detection is carried out, and the overall leakage rate is controlled to be less than or equal to 1×10⁻ 9 Pa・m³ / s, which meets the long-term stable use requirements of civil solar heat pipes.

[0085] 6. Working medium activation and comprehensive performance detection

[0086] The sealed tube row is preheated to 80℃, and is slowly inclined and vibrated for 3min to complete the capillary core infiltration and working medium activation, so as to ensure smooth phase change circulation. Thermodynamic and reliability detection is performed on the tube row, and the qualified indicators are: start-up temperature difference ΔT≤3℃, stable heat transfer of the whole tube section is realized within 10s; axial heat flux is ≥80W / cm², and radial thermal resistance is ≤0.01℃ / W; after 100 cold and hot cycles, the heat transfer performance attenuation rate is <1%. After detection, the tube row is manufactured, which can be used for solar heat pipe heating and drying device assembly.

[0087] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A solar collector tube heating and drying device, characterized in that, The system includes a first frame (1), which is formed by welding a first square tube (2) to form a three-tiered ladder (7); a first heat collection module (6) is provided on the inclined mounting platform (5) formed by the first and second tiers (4) of the first frame (1); a first steel plate (8) is installed on the outer wall of the three-tiered ladder (7) of the first frame (1), and the first steel plate (8) encloses and forms a drying chamber (9); a support beam (17) is provided on the first frame (1) above the third partition (12), and the support beam (17) is provided with... A symmetrical base (18) is provided, on which a drying chamber (19) for drying corn is placed; the drying chamber (19) includes side mesh plates (43) and a V-shaped bottom mesh plate (44), and the four side mesh plates (43) and the bottom mesh plate (44) enclose a trough-shaped storage cavity; a second square tube (45) is arranged from top to bottom between opposite side mesh plates (43), the horizontal spacing between adjacent second square tubes (45) is equal and the positions of adjacent rows and columns of second square tubes (45) are staggered; the top surface of the second square tube (45) is provided with symmetrical... The limiting strip (46) has a symmetrical first hinge seat (47) on its side wall. An inclined mesh plate (48) is hinged to the first hinge seat (47). The lower end of the inclined mesh plate (48) is provided with a strip rod (49) that is adapted to the limiting strip (46). The top surface of the side mesh plate (43) is provided with a strip plate (50). An adjusting rod (51) that is slidably connected to the strip plate (50) and slidably cooperates with the second square tube (45) is provided. The cross-sectional shape of the adjusting rod (51) is T-shaped. The side wall of the adjusting rod (51) above the strip plate (50) is provided with A reset spring (52); the side wall of the first steel plate (8) is rotatably connected to a first rotating shaft (53) driven by a first motor (54), and the side wall of the first rotating shaft (53) is provided with an eccentric first cam (55) with equal spacing and different installation angles; the side wall of the adjusting rod (51) is provided with a Y-shaped support rod (56) located in the drying unit, and the free end of the support rod (56) is rotatably connected to a roller (57) that rolls with the bottom surface of the inclined screen plate (48), and the opening and closing of the inclined screen plate (48) is controlled by the adjustment rod (51) lifting and lowering.

2. The solar collector tube heating and drying device according to claim 1, characterized in that, The first heat collection module (6) includes a double-layer coated vacuum glass heat collection tube (20), a heat superconducting pipe array (21), heat transfer fins (22), and a fluid heat exchange channel (23); the double-layer coated vacuum glass heat collection tube (20) consists of a high borosilicate glass outer tube (24), a vacuum layer (25), and a high borosilicate glass inner tube (26) from the outside to the inside. The head of the high borosilicate glass outer tube (24) is provided with a first support seat (28) connected to the first step (3) of the first frame (1). An elastic seat (29) is provided between the high borosilicate glass outer tube (24) and the head of the inner tube. The outer surface of the high borosilicate glass inner tube (26) is coated with an absorption coating (30) consisting of an anti-reflection film, a selective absorption film, and an infrared reflection film in sequence. The vacuum layer (25) contains a barium aluminum getter (31); the heat superconducting pipe array (21) is composed of multiple vertical transmission pipes (27) and horizontal transmission pipes (32) welded together. Both the vertical transmission pipe (27) and the horizontal transmission pipe (32) are provided with heat transfer fins (22). The upper end of the vertical transmission pipe (27) is fixed to the borosilicate glass inner tube (26) by a fixed sealing plug (33) and fixed to the inner shell (37) of the fluid heat exchange channel (23) by an elastic sealing ring (34). The fluid heat exchange channel (23) is composed of an inner shell (37), a heat insulation material (38) and a heat insulation outer shell (39), and the inner shell (37) is provided with inlet and outlet water ports (40). The horizontal transmission pipe (32) of the heat superconducting pipe (21) is arranged concentrically with the fluid heat exchange channel (23). The side wall of the horizontal transmission pipe (32) is connected with equally spaced bent transmission pipes (41). The horizontal section of the bent transmission pipe (41) extends into the drying chamber (9) and is located above the drying chamber (19). The outer wall of the horizontal section of the bent transmission pipe (41) is provided with heat dissipation fins (42).

3. The solar collector tube heating and drying device according to claim 1, characterized in that, The drying chamber (9) is provided with a horizontal first partition (10); the top surface of the first partition (10) is provided with a vertical second partition (11), the side wall of the second partition (11) is provided with a horizontal third partition (12), and a number of air supply pipes (13) are provided between the third partition (12) and the first partition (10); an air inlet louver (14) is installed on the first steel plate (8) located between the first partition (10) and the third partition (12), a fan (15) opposite to the air inlet louver (14) is installed on the second partition (11) located below the third partition (12), and an exhaust louver (16) is installed on the first steel plate (8) located below the first partition (10).

4. The solar collector tube heating and drying device according to claim 3, characterized in that, The bottom mesh plate (44) is provided with a discharge pipe (58), and a second rotating shaft (59) driven by a second motor (60) is rotatably connected inside the discharge pipe (58). The side wall of the second rotating shaft (59) is provided with a first propeller blade (61), and a discharge valve (62) is provided on the discharge pipe (58) outside the first steel plate (8).

5. The solar collector tube heating and drying device according to claim 1, characterized in that, The first steel plate (8) is hinged with a double-leaf door (64), and the door (64) is provided with an observation window (65).

6. The solar collector tube heating and drying device according to claim 2, characterized in that, The first frame (1) has a shell (66) on the second step (4) for covering the fluid heat exchange channel (23).

7. The solar collector tube heating and drying device according to claim 1, characterized in that, The first frame (1) has a first reflector (67) on the first step (3) for refracting solar radiation.

8. The solar collector tube heating and drying device according to claim 3, characterized in that, The first rotating shaft (53) has a cylindrical second cam (68) on its side wall; the side mesh plate (43) has a first support (69) on its side plate (43), and a rotating plate (70) is rotatably connected to the first support (69). The free end of the rotating plate (70) is rotatably connected to a roller (71) that rolls with the second cam (68). The side wall of the rotating plate (70) has a first traction rope (72); the outer inclined surface of the bottom mesh plate (44) has an L-shaped second support (73). The side mesh plate (43) has a wire tube (74) that slides with the first traction rope (72). The free end of the first traction rope (72) has an impact block (75) for intermittently impacting the bottom mesh plate (44). The first traction rope (72) is fitted with a first spring (76) that is elastically connected between the impact block (75) and the wire tube (74).

9. The solar collector tube heating and drying device according to claim 3, characterized in that, The side mesh plate (43) is provided with a third support (77), and an eccentric arm (78) driven by a third motor (79) is rotatably connected to the third support (77). The free end of the eccentric arm (78) is rotatably connected to a ring seat (80), and a second traction rope (81) is provided on the ring seat (80). The side mesh plate (43) is provided with a fourth support (82), and a rope wheel (83) located above the eccentric arm (78) is rotatably connected to the fourth support (82). The second traction rope (81) is wound around the rope wheel (83). The lower end of the second traction rope (81) is provided with a pressure plate (84) located outside the bottom mesh plate (44). A second spring (85) is elastically connected between the pressure plate (84) and the bottom mesh plate (44) on the second traction rope (81). The second traction rope (81) is slidably engaged with the second square tube (45), and a spindle-shaped second guide block (86) is provided on the side wall of the second traction rope (81) located in the drying unit.

10. A method for manufacturing a tube bank in a solar collector tube heating and drying device according to any one of claims 1-9, characterized in that, Includes the following steps, (1) Preparation and composite molding of tube body substrate: The outer layer of oxygen-free copper TU1 and the inner layer of industrial pure titanium TA2 are mixed at a thickness ratio of 3:1 and then vacuum rolled to form a metallurgically bonded composite tube blank. After being cut into vertical and horizontal transfer tube blanks, the end face is precision machined, the outer wall is polished, ultrasonically degreased, weakly acid rinsed and hot air dried in sequence. (2) Precision machining and composite passivation of inner wall microchannels: A femtosecond laser is used to process a V-shaped microchannel array on the inner wall of the tube, and the tube blank is subjected to composite passivation treatment. The inner titanium layer is subjected to low-temperature oxidation passivation, and the outer copper layer and transition layer are treated with low-corrosion composite passivation solution. After passivation, the tube is rinsed and dried. (3) Heat transfer fin forming, assembly and vacuum brazing: 3003 aluminum alloy strip is stamped into arc or straight heat transfer fins, which are then wrapped around and attached to vertical and horizontal transmission pipes at corresponding angles. Aluminum-copper compatible silver-based brazing filler metal is used for vacuum brazing. After welding, the flaw is detected. The tube blanks that need to be bent are formed by micro-stress cold bending and the pipe sections are connected. (4) Pipeline splicing and sealing structure pre-assembly: Argon arc welding is used to connect the vertical transmission pipe and the horizontal manifold, and a preliminary air tightness test is performed. A sealing plug is welded and fixed at the upper end of the vertical pipe, and a high-temperature resistant metal sealing component is pre-installed at the docking position. (5) Working fluid filling and sealing: Deionized water + corrosion inhibitor is used as the working fluid. Liquid is injected into the pipe bank and steam is vented in a quantitative manner. After low temperature heating and venting, high temperature sealing is performed to complete the fine leak detection. (6) Working fluid activation and comprehensive performance test: The sealed pipe bank is preheated to 80°C, and the working fluid is activated by tilting and low-frequency vibration. The thermodynamic and reliability tests are performed on the pipe bank. After passing the test, the manufacturing is completed.

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