Precise drying machine with internal hot air capable of being circulated

Abstract

The invention relates to the technical field of drying machines, and discloses a precise drying machine with internal hot air capable of being circulated, an air guide mechanism is installed on the left side of a partition plate in a drying shell, drying doors are installed on the left side of the drying shell and the two sides of supporting legs, and a hot air mechanism is installed on the right side of the partition plate in the drying shell; a circulating mechanism is installed in the middle of the hot air mechanism in the drying shell, and an air inlet fan is installed on the right side of the hot air mechanism. According to the drying device, an air inlet fan conveys outside air into an air shell, then the outside air is conveyed into air outlet pipes at the four corners of the drying shell through air channels, at the moment, a heating bent pipe, an inlet pipe and a discharging pipe communicate with a heating medium inlet and a heating medium outlet correspondingly, and due to cooperation of dense heat conducting pieces, air in the air outlet pipes is rapidly heated to form hot air flow; therefore, air in the air outlet pipe is conveyed into the drying box and then becomes hot air flow, the interior of the drying shell can be rapidly heated from four directions, and it is guaranteed that objects can be efficiently, rapidly and evenly dried in the drying shell.

Description

Technical Field

[0001] The invention relates to the technical field of dryers, in particular to a precision dryer with internal hot air circulation. Background Art

[0002] The precision dryer with internal hot air circulation is an advanced drying equipment. It forms a hot air circulation system inside the equipment to make hot air flow continuously through the items to be dried. This design can ensure uniform heat distribution and improve drying efficiency. At the same time, it can accurately control the drying process and ensure the stability and high quality of the drying effect. It is suitable for occasions with high drying requirements, such as the drying of precision electronic components, pharmaceutical products, etc., and provides reliable drying solutions for the production of various industries.

[0003] The patent network announcement number CN212842550U relates to an energy-saving hot air circulation dryer, which solves the problem of uneven heating in the prior art, inability to dry materials with hot air circulation, resulting in low thermal efficiency and no energy saving. An energy-saving hot air circulation dryer includes a drying chamber opened inside a box, a circulating air duct is arranged inside the box, and the circulating air duct is an open concave structure, and the outer wall of the circulating air duct is fixedly connected to the inner wall of the box, a hot air blower is arranged at the center of the bottom of the box, and the air outlet of the hot air blower runs through the bottom of the box, and the extended end of the hot air blower outlet is located on the inner side of the concave of the circulating air duct, and the inner wall of the circulating air duct is fixedly connected with a plurality of first guide plates, and the top of the inner side of the circulating air duct is fixedly opened with a guide port, and the center of both sides of the inner side of the guide port is fixedly connected with a second guide plate. The utility model heats evenly, dries materials through hot air circulation, is energy-saving and environmentally friendly, and has high thermal efficiency.

[0004] During the heating process, the above-mentioned equipment mainly uses a hot air blower to transport hot air from the bottom of the box into the box to achieve the drying purpose. However, this hot air transportation method will cause uneven heat distribution in the box, resulting in uneven heating area of ​​the dried object, thereby failing to achieve efficient drying effect. At the same time, although there is a guide plate to achieve circulation, the hot air cannot be supplemented with heat during the continuous circulation process, which will reduce the hot air drying efficiency.

[0005] Therefore, it is necessary to design a precision dryer with internal hot air circulation that is highly practical, uniform in drying, and has high cycle drying efficiency. Summary of the invention

[0006] The object of the present invention is to provide a precision dryer with internal hot air circulation to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a precision dryer with internal hot air circulation, comprising a supporting leg, a drying shell is fixedly connected to the top of the supporting leg, a partition is fixedly connected in the middle of the drying shell, an air guide mechanism is installed on the left side of the partition in the drying shell, a drying door is installed on the left side of the drying shell and on both sides of the supporting leg, a hot air mechanism is installed on the right side of the partition in the drying shell, a circulation mechanism is installed in the middle of the hot air mechanism in the drying shell, and an air inlet is installed on the right side of the hot air mechanism; The hot air mechanism includes a heating component and an air duct component. The heating component is installed on the right side of the drying shell, and the right side of the heating component and the left side of the air duct component are installed with each other. The air guide mechanism includes a heat preservation component, a first heat preservation plate and a heat conduction component, wherein the first heat preservation plate is fixedly connected to the left side of the partition, a heat preservation component is installed in the drying shell on the left side of the first heat preservation plate, and a heat conduction component is installed in the heat preservation component; The heating assembly includes an air outlet duct, which is fixedly connected to the four corners of the partition. A heat conducting plate is fixedly connected to the right outer wall of the air outlet duct. A heating elbow is fixedly connected to the heat conducting plate near the outer ring. One end of the heating elbow is fixedly connected to an inlet pipe, and the other end of the heating elbow is fixedly connected to an exhaust pipe.

[0008] According to the above technical solution, the air duct assembly includes an air housing and an air duct. The air housing is fixedly connected to the right end of the air outlet pipe. The right side of the air housing is fixedly connected to the air duct. The right side of the air duct is fixedly connected to the left side of the air inlet fan.

[0009] According to the above technical solution, the insulation component includes a second insulation plate, which is fixedly connected to the left inner wall of the first insulation plate in the drying shell, and the right side of the second insulation plate is provided with arc-shaped notches at the four corners of the first insulation plate, and the second insulation plate is provided with air holes at the four corners in the drying shell, a first air path is provided on one side of the second insulation plate corresponding to the air holes, an installation groove is provided in the middle of the second insulation plate, a third insulation plate is installed on the inner side of the installation groove of the second insulation plate, and a second air path is provided in the middle of the second insulation plate corresponding to the first air path.

[0010] According to the above technical solution, the air hole and the air outlet pipe have the same axis, and four second insulation boards are provided, all of which are "L" shaped, and the four "L" shaped second insulation boards are distributed in the drying shell in a rectangular shape. The same axis can ensure that the hot air in the later air outlet pipe can be quickly transported to the air hole.

[0011] According to the above technical solution, the heat conducting component includes a heat conducting plate, which is inserted into the installation groove. The heat conducting plate has a third air path corresponding to the first air path and the second air path. An extension piece is fixedly connected to the inner side of the heat conducting plate. The heat conducting plate is fixedly connected to the outer side of the third insulation plate between the extension pieces.

[0012] According to the above technical solution, the third air path is provided horizontally and vertically in the heat conduction plate, and the third air path is interconnected with the first air path and the second air path. The interconnected first air path, the second air path and the third air path can quickly transport the hot air from the air outlet duct to the first air path, the second air path and the third air path, so as to quickly and efficiently dry the objects in the drying shell from all sides, top, bottom, front and back.

[0013] According to the above technical solution, the circulation mechanism includes a first circulation pipe, which is fixedly connected to the middle of the partition, a circulation shell is fixedly connected to the right end of the first circulation pipe, a mounting frame is fixedly connected to the left side of the circulation shell, a fan blade is rotatably connected to the middle of the mounting frame, a gear ring is fixedly connected to the outer ring of the fan blade, a gear is meshed with the outer ring on the front side of the gear ring, a motor is fixedly connected to the middle of the gear, the outer wall of the motor is fixedly connected to the outer wall on the front side of the circulation shell, a second circulation pipe is fixedly connected to the right side of the circulation shell, and an elbow is fixedly connected to the right end of the second circulation pipe.

[0014] According to the above technical solution, the right end of the second circulation pipe is fixedly connected to the left side of the wind shell, the elbow is arranged in the wind shell, and the end of the elbow not connected to the second circulation pipe is close to the air outlet pipe.

[0015] According to the above technical solution, the drying door includes a door body, the door body is plugged into the left side of the drying shell, the bottom left side of the door body is fixedly connected to a fixed plate, the bottom right side of the fixed plate is fixedly connected to a hydraulic telescopic cylinder, the outer wall of the hydraulic telescopic cylinder is fixedly connected to a support plate, the inner side of the support plate is fixedly connected to the outer shell of the drying shell, the middle of the front and rear sides of the door body is fixedly connected to a sliding rod, the sliding rod is slidably connected to a sliding seat near the left end, and the inner side of the sliding seat is fixedly connected to the outer side of the drying box. The sliding rod and the sliding seat are slidably connected, which can ensure that in the process of the hydraulic telescopic cylinder driving the door body to move, the stable movement of the door body is further guaranteed.

[0016] According to the above technical solution, two hydraulic telescopic cylinders are provided, and the two hydraulic telescopic cylinders are distributed on the front and rear sides of the supporting leg. The outer cylinder of the hydraulic telescopic cylinder is connected to the supporting plate, and the inner cylinder of the hydraulic telescopic cylinder is connected to the fixed plate.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention is provided with a hot air mechanism, and the air inlet fan conveys the outside air into the air shell, and then conveys the air to the air outlet pipes at the four corners of the drying shell through the air duct. At this time, the heating elbow, the inlet pipe and the outlet pipe are respectively connected with the inlet port and the outlet port of the heat medium. Because the dense heat conductive sheets cooperate to quickly heat the air in the air outlet pipe to form a hot air flow, the air in the air outlet pipe is conveyed to the drying box as a hot air flow, and the drying shell can be quickly heated from four directions, ensuring that the objects in the drying shell can be dried efficiently, quickly and evenly.

[0018] 2. The present invention is provided with an air guiding mechanism. When the air outlet pipe conveys the hot air flow into the drying shell, due to the design of the arc-shaped notch, the hot air flow is sprayed through the arc-shaped design to guide the hot air flow to the left side of the first insulation board, thereby drying the right side of the object in the drying box, and the remaining hot air flow is conveyed to the first air path through the air hole again, and then the hot air flow is conveyed out from the drying shell in the up and down, front and back directions through the second air path and the third air path, thereby ensuring that the heat distribution in the drying box is uniform, and further achieving the purpose of efficient and uniform drying. At the same time, the heat conduction plate and the extension sheet can quickly transfer the heat to the drying shell, and further achieve a good drying purpose.

[0019] 3. The present invention is provided with a circulation mechanism. When the motor is started, the gear is driven to rotate. The gear can drive the fan blades to rotate in cooperation with the gear ring, so that the air in the drying shell is transported to the circulation shell through the first circulation pipe, and then transported to the wind shell through the second circulation pipe and the elbow. At this time, the air in the drying shell transported to the wind shell by the airflow generated by the air inlet fan passes through the air outlet pipe and the heating elbow again for heating, thereby ensuring that hot air circulation is realized in the drying shell. In the circulation process, the heat of cooling in the drying shell can be heated again, and the whole circulation process is maintained at a high temperature, so that the hot air in the drying shell is circulated, which can achieve the drying purpose more efficiently.

[0020] 4. The present invention is provided with a drying door. When an object needs to be placed in the drying shell for drying, the hydraulic telescopic cylinder is extended to move the door body on the left side of the drying shell to the left, so as to facilitate the placement of the object into the drying shell. After closing, the design of the telescopic hydraulic cylinder can ensure that the rear door body and the left side of the drying shell are tightly closed, thereby ensuring that heat will not be lost during the drying process, further ensuring the purpose of efficient drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram on the right side of the overall structure of the present invention; Figure 3 It is a front cross-sectional schematic diagram of the overall structure of the present invention; Figure 4 This is the right side schematic diagram of the drying shell and drying door; Figure 5 It is the left side schematic diagram of the air guide mechanism; Figure 6 It is a schematic diagram of one side of the thermal conductive component; Figure 7 It is a schematic diagram of one side of the insulation component; Figure 8 It is a schematic diagram of the partial separation of the circulation mechanism; Fig. 9 It is the left side schematic diagram of the hot air mechanism; Fig.10 It is a schematic diagram of the right side of the hot air mechanism; Fig.11 Schematic diagram of a top view of a heating component.

[0022] In the figure: 1. drying shell; 2. drying door; 21. door body; 22. sliding seat; 23. support plate; 24. fixed plate; 25. hydraulic telescopic cylinder; 26. sliding rod; 3. support leg; 4. hot air mechanism; 41. heating component; 411. air outlet pipe; 412. heating elbow; 413. heat conducting sheet; 414. inlet pipe; 415. outlet pipe; 42. Wind duct assembly; 421. Wind shell; 422. Air duct; 5. Air inlet fan; 6. Air guide mechanism; 61. Insulation assembly; 611. Second insulation board; 612. Arc-shaped notch; 613. Air hole; 614. First wind duct; 615. Mounting groove; 616. Third insulation board; 617. Second wind duct; 62. First insulation board; 63. Heat conduction assembly; 631. Heat conduction board; 632. Third wind duct; 633. Extension piece; 7. Circulation mechanism; 71. First circulation pipe; 72. Circulation shell; 73. Motor; 74. Gear; 75. Mounting frame; 76. Gear ring; 77. Fan blade; 78. Second circulation pipe; 79. Elbow; 8. Partition. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1-39-11, the present invention provides a technical solution: a precision dryer with internal hot air circulation, comprising a support leg 3, a drying shell 1 is fixedly connected to the top of the support leg 3, a partition 8 is fixedly connected in the middle of the drying shell 1, an air guide mechanism 6 is installed on the left side of the partition 8 in the drying shell 1, a drying door 2 is installed on the left side of the drying shell 1 and on both sides of the support leg 3, a hot air mechanism 4 is installed on the right side of the partition 8 in the drying shell 1, a circulation mechanism 7 is installed in the middle of the hot air mechanism 4 in the drying shell 1, and an air inlet fan 5 is installed on the right side of the hot air mechanism 4; The hot air mechanism 4 includes a heating component 41 and an air duct component 42. The heating component 41 is installed on the right side of the drying shell 1. The right side of the heating component 41 and the left side of the air duct component 42 are installed with each other. The air guide mechanism 6 includes a heat preservation component 61, a first heat preservation plate 62 and a heat conduction component 63. The first heat preservation plate 62 is fixedly connected to the left side of the partition 8. The heat preservation component 61 is installed on the left side of the first heat preservation plate 62 in the drying shell 1. The heat conduction component 63 is installed in the heat preservation component 61. The heating assembly 41 includes an air outlet pipe 411, which is fixedly connected to the four corners of the partition 8. A heat conducting plate 413 is fixedly connected to the right outer wall of the air outlet pipe 411. A heating elbow 412 is fixedly connected to the heat conducting plate 413 near the outer circle. One end of the heating elbow 412 is fixedly connected to an inlet pipe 414, and the other end of the heating elbow 412 is fixedly connected to an exhaust pipe 415.

[0025] The air duct assembly 42 includes an air housing 421 and an air duct 422 . The air housing 421 is fixedly connected to the right end of the air outlet pipe 411 . The right side of the air housing 421 is fixedly connected to the air duct 422 . The right side of the air duct 422 is fixedly connected to the left side of the air inlet fan 5 .

[0026] By providing a hot air mechanism 4, the air inlet fan 5 conveys the external air into the air shell 421, and then conveys it to the air outlet pipes 411 at the four corners of the drying shell 1 through the air duct 422. At this time, the heating elbow 412, the inlet pipe 414 and the outlet pipe 415 are respectively connected to the inlet and outlet of the heat medium. Because the dense heat conductive sheets 413 cooperate to quickly heat the air in the air outlet pipe 411 to form a hot air flow, the air in the air outlet pipe 411 is conveyed to the drying box as a hot air flow, and the drying shell 1 can be quickly heated from four directions to ensure that the objects in the drying shell 1 can be dried efficiently, quickly and evenly.

[0027] Example 2: Please refer to Figure 1-3 and Figure 5-7On the basis of the first embodiment, the insulation component 61 further comprises a second insulation board 611, the second insulation board 611 is fixedly connected to the left inner wall of the first insulation board 62 in the drying shell 1, an arc-shaped notch 612 is provided at the four corners of the first insulation board 62 on the right side of the second insulation board 611, the second insulation board 611 is provided with air holes 613 at the four corners in the drying shell 1, a first air passage 614 is provided at one side of the second insulation board 611 corresponding to the air holes 613, an installation groove 615 is provided in the middle of the second insulation board 611, a third insulation board 616 is installed on the inner side of the installation groove 615 of the second insulation board 611, and a second air passage 617 is provided in the middle of the second insulation board 611 corresponding to the first air passage 614.

[0028] The air hole 613 and the air outlet pipe 411 have the same axis, and four second insulation boards 611 are provided, all of which are "L" shaped, and the four "L" shaped second insulation boards 611 are distributed in the drying shell 1 in a rectangular shape. The same axis can ensure that the hot air in the later air outlet pipe 411 can be quickly transported to the air hole 613.

[0029] The heat conducting assembly 63 includes a heat conducting plate 631, which is inserted into the mounting groove 615. The heat conducting plate 631 has a third air passage 632 corresponding to the first air passage 614 and the second air passage 617. An extension piece 633 is fixedly connected to the inner side of the heat conducting plate 631. The heat conducting plate 631 is fixedly connected to the outer side of the third insulation plate 616 between the extension pieces 633.

[0030] The third air passage 632 is arranged horizontally and vertically in the heat conducting plate 631, and the third air passage 632 is interconnected with the first air passage 614 and the second air passage 617. The interconnected first air passage 614, the second air passage 617 and the third air passage 632 can quickly transport the hot air from the air outlet pipe 411 to the first air passage 614, the second air passage 617 and the third air passage 632, so as to quickly and efficiently dry the objects in the drying shell 1 from all sides, top, bottom, front and back.

[0031] By providing an air guiding mechanism 6, when the air outlet pipe 411 conveys the hot air flow into the drying shell 1, due to the design of the arc-shaped notch 612, the hot air flow is sprayed through the arc-shaped design to guide the hot air flow to the left side of the first insulation plate 62, thereby drying the right side of the object in the drying box, and the remaining hot air flow is conveyed to the first air path 614 through the air hole 613 again, and then the hot air flow is conveyed out from the drying shell 1 in the up and down, front and back directions through the second air path 617 and the third air path 632, so as to ensure that the heat distribution in the drying box is uniform, and further achieve the purpose of efficient and uniform drying. At the same time, the heat conducting plate 631 and the extension sheet 633 can quickly transfer the heat to the drying shell 1, and further achieve a good drying purpose.

[0032] Example 3: Please refer to Figure 1-3and Figure 8 On the basis of the second embodiment, the circulation mechanism 7 further comprises a first circulation pipe 71, the first circulation pipe 71 is fixedly connected to the middle of the partition 8, the right end of the first circulation pipe 71 is fixedly connected to a circulation shell 72, a mounting frame 75 is fixedly connected to the left side of the circulation shell 72, a fan blade 77 is rotatably connected in the middle of the mounting frame 75, a gear ring 76 is fixedly connected to the outer ring of the front side of the gear ring 76, a motor 73 is fixedly connected in the middle of the gear 74, the outer wall of the motor 73 is fixedly connected to the outer wall of the front side of the circulation shell 72, a second circulation pipe 78 is fixedly connected to the right side of the circulation shell 72, and an elbow 79 is fixedly connected to the right end of the second circulation pipe 78.

[0033] The right end of the second circulation pipe 78 is fixedly connected to the left side of the wind housing 421 , the elbow 79 is disposed in the wind housing 421 , and the end of the elbow 79 not connected to the second circulation pipe 78 is close to the air outlet pipe 411 .

[0034] By providing a circulation mechanism 7, the motor 73 is started to drive the gear 74 to rotate, and the gear 74 can drive the fan blade 77 to rotate with the cooperation of the gear ring 76, so that the air in the drying shell 1 is transported to the circulation shell 72 through the first circulation pipe 71, and then transported to the wind shell 421 through the second circulation pipe 78 and the elbow 79. At this time, the air in the drying shell 1 transported to the wind shell 421 by the air flow generated by the air inlet fan 5 passes through the air outlet pipe 411 and the heating elbow 412 for heating, thereby ensuring that hot air circulation is realized in the drying shell 1, and in the circulation process, the heat cooled in the drying shell 1 can be heated again, and the whole circulation process is maintained at a high temperature, so that the hot air in the drying shell 1 is circulated, and the drying purpose can be achieved more efficiently.

[0035] Example 4: Please refer to Figure 1-4 On the basis of the third embodiment, the drying door 2 further comprises a door body 21, which is plugged into the left side of the drying shell 1, a fixing plate 24 is fixedly connected to the bottom left side of the door body 21, a hydraulic telescopic cylinder 25 is fixedly connected to the right side of the bottom of the fixing plate 24, a support plate 23 is fixedly connected to the outer wall of the hydraulic telescopic cylinder 25, and the inner side of the support plate 23 is fixedly connected to the outer shell of the drying shell 1.

[0036] A sliding rod 26 is fixedly connected between the front and rear sides of the door body 21, and a sliding seat 22 is slidably connected to the sliding rod 26 near the left end, and the inner side of the sliding seat 22 is fixedly connected to the outer side of the drying box. The sliding rod 26 and the sliding seat 22 are slidably connected, which can ensure that the door body 21 can move stably when the hydraulic telescopic cylinder 25 drives the door body 21 to move.

[0037] Two hydraulic telescopic cylinders 25 are provided, and the two hydraulic telescopic cylinders 25 are distributed at the front and rear sides of the supporting leg 3 . The outer cylinder of the hydraulic telescopic cylinder 25 is connected to the supporting plate 23 , and the inner cylinder of the hydraulic telescopic cylinder 25 is connected to the fixing plate 24 .

[0038] By providing the drying door 2, when an object needs to be placed in the drying shell 1 for drying, the hydraulic telescopic cylinder 25 is extended, thereby moving the door body 21 on the left side of the drying shell 1 to the left, so as to facilitate placing the object into the drying shell 1. After closing, due to the design of the telescopic hydraulic cylinder, the rear door body 21 and the left side of the drying shell 1 can be tightly closed, thereby ensuring that heat will not be lost during the drying process, further ensuring the purpose of efficient drying.

[0039] When in use, the air inlet fan 5 conveys the outside air into the air shell 421, and then conveys it to the air outlet pipes 411 at the four corners of the drying shell 1 through the air ducts 422. At this time, the heating elbow 412, the inlet pipe 414 and the outlet pipe 415 are respectively connected to the inlet and outlet of the heat medium. Because the dense heat conductive plates 413 cooperate to quickly heat the air in the air outlet pipe 411 to form a hot air flow, the air in the air outlet pipe 411 is conveyed to the drying box as a hot air flow, which can quickly heat the drying shell 1 from four directions, ensuring that the objects in the drying shell 1 can be dried efficiently, quickly and evenly.

[0040] After the air outlet 411 conveys the hot air flow into the drying shell 1, due to the design of the arc-shaped notch 612, the hot air flow is sprayed through the arc-shaped design to guide the hot air flow to the left side of the first insulation plate 62, thereby drying the right side of the objects in the drying box, and the remaining hot air flow is conveyed to the first air path 614 through the air hole 613 again, and then the hot air flow is conveyed out from the drying shell 1 in the up and down, front and back directions through the second air path 617 and the third air path 632, so as to ensure that the heat distribution in the drying box is uniform, and the purpose of efficient and uniform drying is further achieved. At the same time, the heat conduction plate 631 and the extension piece 633 can quickly transfer the heat to the drying shell 1, so as to achieve a better drying purpose.

[0041] The motor 73 starts to drive the gear 74 to rotate. The gear 74 can drive the fan blades 77 to rotate with the cooperation of the gear ring 76, so that the air in the drying shell 1 is transported to the circulation shell 72 through the first circulation pipe 71, and then transported to the wind shell 421 through the second circulation pipe 78 and the elbow 79. At this time, the air in the drying shell 1 transported to the wind shell 421 by the airflow generated by the fan passes through the air outlet pipe 411 and the heating elbow 412 for heating, thereby ensuring that hot air circulation is realized in the drying shell 1, and in the circulation process, the heat that is cooled down in the drying shell 1 can be heated again, and the whole circulation process is maintained at a high temperature, so that the hot air in the drying shell 1 is circulated, which can achieve the drying purpose more efficiently.

[0042] When it is necessary to put objects into the drying shell 1 for drying, the hydraulic telescopic cylinder 25 is extended to move the door body 21 on the left side of the drying shell 1 to the left, so as to facilitate the placement of objects into the drying shell 1. After closing, due to the design of the telescopic hydraulic cylinder, the rear door body 21 and the left side of the drying shell 1 can be tightly closed, thereby ensuring that heat will not be lost during the drying process, further ensuring the purpose of efficient drying.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precision dryer with internal hot air circulation, comprising a support leg (3), characterized in that: The top of the support leg (3) is fixedly connected to a drying shell (1), a partition (8) is fixedly connected in the middle of the drying shell (1), an air guide mechanism (6) is installed on the left side of the partition (8) in the drying shell (1), a drying door (2) is installed on the left side of the drying shell (1) and on both sides of the support leg (3), a hot air mechanism (4) is installed on the right side of the partition (8) in the drying shell (1), a circulation mechanism (7) is installed in the middle of the hot air mechanism (4) in the drying shell (1), and an air inlet fan (5) is installed on the right side of the hot air mechanism (4); The hot air mechanism (4) comprises a heating component (41) and an air duct component (42); the heating component (41) is installed on the right side of the drying shell (1); the right side of the heating component (41) and the left side of the air duct component (42) are installed with each other; The air guide mechanism (6) comprises a heat-insulating component (61), a first heat-insulating plate (62) and a heat-conducting component (63); the first heat-insulating plate (62) is fixedly connected to the left side of the partition (8); the heat-insulating component (61) is installed in the drying shell (1) on the left side of the first heat-insulating plate (62); and the heat-conducting component (63) is installed in the heat-insulating component (61); The heating assembly (41) comprises an air outlet pipe (411), the air outlet pipe (411) being fixedly connected to the four corners of the partition (8), a heat conducting plate (413) being fixedly connected to the right outer wall of the air outlet pipe (411), a heating elbow (412) being fixedly connected to the heat conducting plate (413) near the outer ring, one end of the heating elbow (412) being fixedly connected to an inlet pipe (414), and the other end of the heating elbow (412) being fixedly connected to an outlet pipe (415).

2. A precision dryer with internal hot air circulation according to claim 1, characterized in that: The air duct assembly (42) comprises an air housing (421) and an air duct (422); the air housing (421) is fixedly connected to the right end of the air outlet pipe (411); the right side of the air housing (421) is fixedly connected to the air duct (422); and the right side of the air duct (422) is fixedly connected to the left side of the air inlet fan (5).

3. A precision dryer with internal hot air circulation according to claim 2, characterized in that: The heat-insulating assembly (61) comprises a second heat-insulating plate (611), the second heat-insulating plate (611) being fixedly connected to the left inner wall of the first heat-insulating plate (62) in the drying shell (1), the right side of the second heat-insulating plate (611) being provided with arc-shaped notches (612) at the four corners of the first heat-insulating plate (62), the second heat-insulating plate (611) being provided with air holes (613) at the four corners in the drying shell (1), a first air passage (614) being provided on one side of the second heat-insulating plate (611) corresponding to the air holes (613), a mounting groove (615) being provided in the middle of the second heat-insulating plate (611), a third heat-insulating plate (616) being installed on the inner side of the mounting groove (615) of the second heat-insulating plate (611), and a second air passage (617) being provided in the middle of the second heat-insulating plate (611) corresponding to the first air passage (614).

4. A precision dryer with internal hot air circulation according to claim 3, characterized in that: The air hole (613) and the air outlet pipe (411) have the same axis. Four second thermal insulation plates (611) are provided, and all four are "L"-shaped. The four "L"-shaped second thermal insulation plates (611) are distributed in a rectangular shape inside the drying shell (1).

5. A precision dryer with internal hot air circulation according to claim 4, characterized in that: The heat-conducting assembly (63) comprises a heat-conducting plate (631), the heat-conducting plate (631) being inserted into the mounting groove (615), the heat-conducting plate (631) being provided with a third air path (632) corresponding to the first air path (614) and the second air path (617), an extension piece (633) being fixedly connected to the inner side of the heat-conducting plate (631), and the heat-conducting plate (631) being fixedly connected to the outer side of the third heat-insulating plate (616) between the extension pieces (633).

6. A precision dryer with internal hot air circulation according to claim 5, characterized in that: The third air path (632) is provided in one horizontal direction and one vertical direction in the heat conducting plate (631), and the third air path (632) is interconnected with the first air path (614) and the second air path (617).

7. A precision dryer with internal hot air circulation according to claim 6, characterized in that: The circulation mechanism (7) comprises a first circulation pipe (71), the first circulation pipe (71) being fixedly connected to the middle of the partition (8), a circulation shell (72) being fixedly connected to the right end of the first circulation pipe (71), a mounting frame (75) being fixedly connected to the left side of the circulation shell (72), a fan blade (77) being rotatably connected to the middle of the mounting frame (75), a gear ring (76) being fixedly connected to the outer ring of the fan blade (77), a gear (74) being meshed with the outer ring of the front side of the gear ring (76), a motor (73) being fixedly connected to the middle of the gear (74), an outer wall of the motor (73) being fixedly connected to the outer wall of the front side of the circulation shell (72), a second circulation pipe (78) being fixedly connected to the right side of the circulation shell (72), and an elbow (79) being fixedly connected to the right end of the second circulation pipe (78).

8. A precision dryer with internal hot air circulation according to claim 7, characterized in that: The right end of the second circulation pipe (78) is fixedly connected to the left side of the wind shell (421), the elbow (79) is arranged in the wind shell (421), and the end of the elbow (79) not connected to the second circulation pipe (78) is close to the air outlet pipe (411).

9. A precision dryer with internal hot air circulation according to claim 8, characterized in that: The drying door (2) comprises a door body (21), the door body (21) being plugged into the left side of the drying shell (1), a fixing plate (24) being fixedly connected to the bottom of the left side of the door body (21), a hydraulic telescopic cylinder (25) being fixedly connected to the right side of the bottom of the fixing plate (24), a supporting plate (23) being fixedly connected to the outer wall of the hydraulic telescopic cylinder (25), the inner side of the supporting plate (23) being fixedly connected to the outer shell of the drying shell (1), a sliding rod (26) being fixedly connected to the middle of the front and rear sides of the door body (21), a sliding seat (22) being slidably connected to the sliding rod (26) near the left end, and the inner side of the sliding seat (22) being fixedly connected to the outer side of the drying box.

10. A precision dryer with internal hot air circulation according to claim 9, characterized in that: Two hydraulic telescopic cylinders (25) are provided, and the two hydraulic telescopic cylinders (25) are distributed on the front and rear sides of the support leg (3). The outer cylinder of the hydraulic telescopic cylinder (25) is connected to the support plate (23), and the inner cylinder of the hydraulic telescopic cylinder (25) is connected to the fixed plate (24).

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