CN218993877U - Hot oil circulation device of longan drying box - Google Patents

Hot oil circulation device of longan drying box Download PDF

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Publication number
CN218993877U
CN218993877U CN202320124256.8U CN202320124256U CN218993877U CN 218993877 U CN218993877 U CN 218993877U CN 202320124256 U CN202320124256 U CN 202320124256U CN 218993877 U CN218993877 U CN 218993877U
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drying box
longan
heating chamber
fixedly connected
oil
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罗焜友
罗国伦
余灿萍
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Guangxi Hongxin Food Co ltd
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Guangxi Hongxin Food Co ltd
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

The utility model discloses a hot oil circulation device of a longan drying box, and relates to the technical field of food drying. According to the longan drying box, the heat conduction oil in the heating chamber is heated to a proper temperature through the heating plate, the interior of the drying box is heated through the heat exchange mechanism, and the longan in each layer of longan tray is uniformly dried through the air outlet, so that the longan in the drying box is heated more uniformly, and the consistency of the longan quality can be effectively improved. The utility model comprises a heating chamber and a drying box, wherein one end of the heating chamber is fixedly connected with a connecting frame, the heating chamber is fixedly connected to one side of the drying box through the connecting frame, a heating plate is arranged in the heating chamber, an inner lining plate is fixedly connected to the inside of the drying box, a plurality of longan trays are arranged in the inner lining plate, and a heat exchange mechanism is arranged at the bottom of the inner lining plate and positioned in the drying box.

Description

Hot oil circulation device of longan drying box
Technical Field
The utility model belongs to the technical field of food drying, and particularly relates to a hot oil circulation device of a longan drying box.
Background
Longan is commonly called as longan, is a rare and special product in the southern subtropical zone of China, has unique fruit flavor, is rich in crude fiber, vitamin A, vitamin B1, vitamin B2, vitamin C, nicotinic acid, tartaric acid, protein, nicotinic acid, mineral substances and the like, has obvious nourishing function, is a fruit with dual purposes of medicine and fruit, and has the functions of tonifying heart and spleen, nourishing blood and the like in medicine. However, the water content of fresh longan is about 70% higher, and the period of full production is the south high-temperature rainy season, and the fresh longan is not easy to store and transport. The longan is usually dried by a drying box or a machine and then transported and stored.
In the prior art, a plurality of layers of net plates are arranged in a drying box or a machine of the longan, fresh longan is paved on each layer of net plate, then heat energy generated by a heating component is transferred to air to form hot air through heat transfer, the hot air rapidly flows to a drying chamber from the lower part of a heating chamber through a ventilation opening by a fan, and the hot air in the drying chamber rapidly flows from bottom to top and is subjected to heat transfer with the longan, so that the longan is dried.
In the prior art, the hot air flows from bottom to top, so that the hot air energy at the top of the drying chamber is smaller than that at the bottom of the drying chamber, thereby generating a phenomenon of uneven heat distribution, easily generating a phenomenon that longan below the drying chamber is dried, and longan above the drying chamber is not dried, and further reducing the drying efficiency. The heat energy generated by the heating component cannot be fully utilized by adopting a layout mode of unidirectional air flow from bottom to top, so that the heat energy loss is increased.
In order to solve the technical problems in the prior art, the technical problem is solved by searching to find that the' authorized bulletin No. CN205512235U provides a longan dryer, a hearth and a thermal retardation box are arranged in the middle of a heating chamber, an upper fan and a lower fan blow hot air around the thermal retardation box and hot air around the hearth to a left drying chamber and a right drying chamber respectively through ventilation openings, the middle of the hearth and the thermal retardation box is separated by a heating partition plate, and the hot air of the upper fan and the lower fan can be separated, so that the hot air enters the left drying chamber and the right drying chamber. The upper fan and the lower fan supply air simultaneously, so that heat energy is fully utilized, and energy loss is reduced. And the left and right are dried simultaneously, so that the drying efficiency is improved. The drying chamber is provided with a heat insulation board and is provided with an upper door and a lower door separately, so that the heat distribution is more uniform.
However, when the longan dryer is used, fuel is firstly put into a hearth to burn and generate heat, the heat is transferred to the hearth, the heat retardation box and the surrounding air, so that the air near the hearth and the heat retardation box forms hot air, and then the hot air flows from a heating chamber to a left drying chamber and a right drying chamber through ventilation openings by using an upper fan and a lower fan, so that the longan is dried. The thermodynamic temperature realized by the mode of fuel combustion heat production reheat transfer is not easy to stabilize, and the drying time is directly affected by the restriction of the fuel input amount.
Disclosure of Invention
The utility model aims to provide a hot oil circulation device of a longan drying box, which aims to solve the existing problems.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model provides a hot oil circulating device of longan stoving case, includes heating chamber and stoving case, the one end fixedly connected with link of heating chamber, the heating chamber passes through link fixed connection in one side of stoving case, the internally mounted of heating chamber has the hot plate for with the interior conduction oil heating of heating chamber produce heat, the inside fixedly connected with interior welt of stoving case, multilayer longan tray has been placed to the interior welt, the bottom of interior welt just is located the internally mounted of stoving case has heat transfer mechanism, heat transfer mechanism is used for blowing heat to (radiating) every layer of longan tray with heat.
Further, a plurality of air outlets are symmetrically formed in the two sides of the inner lining plate and located at the bottom of the longan tray, six supporting legs are uniformly distributed and fixed on four corners of the bottom of the drying box and one side of the bottom of the heating chamber, an isolation door is hinged to the front face of the drying box, and an observation window is arranged on the front face of the heating chamber.
Further, the heating plate, the inside of heating plate is inlayed and is had the heating wire, the upper surface of heating plate is provided with a plurality of soaking pieces.
Further, the upper surface of heating chamber has linked firmly the motor, motor fixed connection is at the upper surface of heating chamber, be provided with the heat insulating sheet between motor and the heating chamber, the output of motor runs through heating chamber and heat insulating sheet fixedly connected with impeller, impeller is located the inside of heating chamber, and is located directly over the soaking piece.
Further, the heat exchange mechanism comprises a heat conduction oil pipe, a supporting steel mesh and a cooling fan, wherein the two ends of the supporting steel mesh are fixedly connected to the two sides of the inner wall of the drying box, the heat conduction oil pipe is fixedly connected to the upper surface of the supporting steel mesh, the cooling fan is fixedly connected to the bottom of the inner wall of the drying box, an air inlet is formed in the bottom of the drying box and located under the cooling fan, and a filter screen is fixedly connected to the inner part of the air inlet.
Further, the heat exchange mechanism further comprises a hot oil pump and an oil inlet pipe, one end of the oil inlet pipe penetrates through the drying box and is connected with one end of the heat conduction oil pipe, the other end of the oil inlet pipe is connected with one end of the heating chamber, the hot oil pump is fixedly connected to the bottom of the inner wall of the connecting frame, the output end of the hot oil pump is connected with a first oil outlet pipe, one end of the first oil outlet pipe is connected with one end of the heating chamber, the first oil outlet pipe is located below the oil inlet pipe, the input end of the hot oil pump is connected with a second oil outlet pipe, and the second oil outlet pipe penetrates through the drying box and is connected with the other end of the heat conduction oil pipe.
Further, the top fixedly connected with oiling mouth of heating chamber other end, install temperature sensor on the oiling mouth, the bottom fixedly connected with controller of link inner wall, one side fixedly connected with level sensor of stoving incasement wall, the top fixedly connected with temperature sensor of stoving incasement wall, hot oil pump, heating wire, temperature sensor, motor and radiator fan all with controller electric connection.
Further, the top fixedly connected with gas vent of stoving case, the top fixedly connected with shield of gas vent.
It can be clearly seen that the technical problems to be solved by the present application must be solved by the above-mentioned technical solutions of the present application.
Meanwhile, through the technical scheme, the utility model has at least the following beneficial effects:
(1) According to the utility model, the heat conduction oil in the heating chamber is heated to a proper temperature through the heating mechanism, and then the heat exchange mechanism exchanges heat with the interior of the drying box, so that the interior of the drying box is heated, the heat generated by the heat conduction oil is radiated into the drying box in a more stable manner through the heat exchange mechanism, and the longan in each layer of longan tray is uniformly dried through the air outlet, so that the longan in the drying box is heated more uniformly, and the consistency of the longan quality can be effectively improved.
(2) Because the heat conduction oil is adopted to generate heat, the heat conduction oil can be circularly heated for a long time without interruption, so that the heating effect is better, and the limitation of the heat generation by the input amount of fuel in the prior art is avoided.
(3) Because the heat conduction oil is adopted to generate heat, the flue gas generated by burning fuel in the prior art is avoided, and the longan drying process has no smoke smell, thereby being beneficial to improving the taste of the longan pulp.
(4) According to the utility model, the contact area between the soaking piece and the heat conduction oil can be increased, the heating speed of the heat conduction oil in the heating chamber is improved, and the phenomenon that the heat conduction oil is carbonized on the surfaces of the soaking piece and the soaking plate due to overhigh temperature of the soaking plate and the soaking piece is reduced.
(5) According to the utility model, the stirring impeller is driven by the motor to rotate, so that the heat conduction oil in the heating chamber is stirred, the flow speed of the heat conduction oil on the surface of the soaking piece is accelerated, the heat conduction oil is heated more uniformly, the heating efficiency is further improved, and the heat conduction oil carbonization phenomenon is further improved.
(6) According to the utility model, the temperature sensor detects the temperature inside the inner lining plate and transmits a signal to the controller, and the controller controls the on-off of the electric heating wire, the hot oil pump and the cooling fan circuit to control the temperature inside the inner lining plate, so that constant-temperature drying is realized, and the practicability of the device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the structure of the heating plate of the present utility model;
FIG. 3 is a schematic view showing the structure of the longan tray and the inner lining board of the present utility model in an exploded manner;
FIG. 4 is a schematic view of a heat exchange mechanism according to the present utility model;
FIG. 5 is a schematic view of a filter screen according to the present utility model;
fig. 6 is a schematic view of the structure of the exhaust port and the dust cap of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a heating chamber; 2. a drying box; 3. a connecting frame; 4. a motor; 5. a heat insulating sheet; 6. a longan tray; 7. an air outlet; 8. an exhaust port; 9. a dust cover; 10. a support leg; 11. heating wires; 12. a hot oil pump; 13. a controller; 14. an observation window; 15. a filter screen; 16. an inner liner; 17. an isolation door; 18. an oil filling port; 19. a temperature sensor; 20. a liquid level sensor; 21. an oil inlet pipe; 22. a first flowline; 23. a second oil outlet pipe; 24. a stirring impeller; 25. a heating plate; 26. a heat conduction oil pipe; 27. supporting a steel mesh; 28. a heat radiation fan; 29. soaking slices; 30. an air inlet.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-6, the present utility model is directed to a hot oil circulation apparatus for a longan drying box.
Specifically, please refer to fig. 1-3:
comprises a heating chamber 1 and a drying box 2, wherein one end of the heating chamber 1 is fixedly connected with a connecting frame 3, the surface of the heating chamber 1 is covered with an insulating layer, six supporting legs 10 are uniformly distributed and fixed at four corners at the bottom of the drying box 2 and one side at the bottom of the heating chamber 1, the supporting legs 10 are used for supporting the drying box 2 and the heating chamber 1, the drying box 2 and the supporting legs 10 are isolated from the ground, the loss of heat is reduced, the front surface of the drying box 2 is hinged with an isolating door 17, the heating chamber 1 is fixedly connected with one side of the drying box 2 through the connecting frame 3, the heating chamber 1 is fixed on one side of the drying box 2 through the connecting frame 3, the top of the drying box 2 is fixedly connected with an exhaust port 8, the top of the exhaust port 8 is fixedly connected with a dust cover 9, the steam inside the drying box 2 is exhausted through the exhaust port 8, dust can be effectively prevented from falling inside a longan tray 6 through the exhaust port 8, avoid influencing the quality of longan inside the longan tray 6, the internally mounted of heating chamber 1 has hot plate 25, hot plate 25 is used for heating the conduction oil inside heating chamber 1, the inside fixedly connected with interior lining board 16 of stoving case 2, interior lining board 16 passes through welded fastening in the inside of heating chamber 1, the inside of interior lining board 16 is provided with multilayer longan tray 6, longan tray 6 is used for holding the longan, the front of longan tray 6 is provided with the handle, be convenient for get in the inside of stoving case 2 through the handle and put longan tray 6, the structural design of fretwork is adopted for its bottom, be convenient for the hot air to heat the inside longan that holds, a plurality of air outlets 7 have all been seted up to the both sides inside interior lining board 16 and the bottom that is located longan tray 6 symmetry, the upper surface at air outlet 7 is all slided to longan tray 6, the air outlet 7 is used for guiding heat in the drying box 2 into the interior of the lining plate 16, supporting the longan tray 6, and arranging a heat exchange mechanism at the bottom of the lining plate 16 and in the drying box 2, wherein the heat exchange mechanism is used for raising the temperature in the drying box 2 in a mode of circulating heat conducting oil;
according to the structural design, when the longan drying box is used, longan is placed in the longan tray 6, the longan tray 6 is inserted into the interior of the inner lining plate 16 through the handle, the isolating door 17 is closed above the air outlet 7, heat conduction oil in the heating chamber 1 is heated to a proper temperature through the heating plate 25, then the interior of the drying box 2 is heated through the heat exchange mechanism, and the longan in each layer of the longan tray 6 is uniformly dried through the air outlet 7 by heat, so that the longan in the drying box 2 is heated more uniformly, and the consistency of the longan quality can be effectively improved;
the front surface of the heating chamber 1 is provided with an observation window 14, and the observation of the heat conduction oil level in the heating chamber 1 is facilitated through the observation window 14;
the heating plate 25 is made of aluminum alloy, the heating wire 11 is inlaid in the heating plate 25, the heating wire 11 and the soaking plate 25 are insulated by ceramic powder, a plurality of soaking pieces 29 which are uniformly spaced are arranged on the upper surface of the heating plate 25, the contact area between the soaking pieces 29 and the heat conducting oil can be increased, the heating speed of the heat conducting oil in the heating chamber 1 is improved, and the phenomenon that the heat conducting oil is carbonized on the surfaces of the soaking pieces 29 and the heating plate 25 due to overhigh temperature of the heating plate 25 and the soaking pieces 29 is reduced;
as is clear from the above structural design, the heating wire 11 is energized to generate heat, and the heat transfer oil in the heating chamber 1 is heated by the heating plate 25 and the soaking piece 29;
the motor 4 is fixedly connected to the upper surface of the heating chamber 1, the heat insulation sheet 5 is arranged between the motor 4 and the heating chamber 1, the heat insulation sheet 5 is used for performing heat insulation, the temperature of the heating chamber 1 is reduced through the heat insulation sheet 5 and is transmitted to the inside of the motor 4, the service life of the motor 4 is further prolonged through reducing the temperature rise of the motor 4, the output end of the motor 4 penetrates through the heating chamber 1 and the heat insulation sheet 5 and is fixedly connected with the stirring impeller 24, and the stirring impeller 24 is positioned in the heating chamber 1 and is positioned right above the soaking sheet 29;
according to the structural design, the stirring impeller 24 is driven to rotate by the motor 4, so that the heat conduction oil in the heating chamber 1 is stirred, the flow speed of the heat conduction oil on the surface of the soaking piece 29 is accelerated, the heat conduction oil is heated more uniformly, the heating efficiency is further improved, and the carbonization phenomenon of the heat conduction oil is further improved.
Referring to fig. 2, 4 and 5, in other embodiments:
the heat exchange mechanism comprises a heat conduction oil pipe 26, a supporting steel mesh 27, a heat dissipation fan 28, a hot oil pump 12 and an oil inlet pipe 21, wherein both ends of the supporting steel mesh 27 are fixedly connected to both sides of the inner wall of the drying box 2, the heat conduction oil pipe 26 is fixedly connected to the upper surface of the supporting steel mesh 27, the supporting steel mesh 27 is used for supporting the heat conduction oil pipe 26, the stability of the heat exchange mechanism is improved, the heat dissipation fan 28 is fixedly connected to the bottom of the inner wall of the drying box 2, the heat dissipation fan 28 is used for radiating heat of the heat conduction oil in the heat conduction oil pipe 26 to the inside of the drying box 2, an air inlet 30 is formed in the bottom of the drying box 2 and is positioned right below the heat dissipation fan 28, a filter screen 15 is fixedly connected to the inside of the air inlet 30, foreign matters are prevented from entering the inside of the drying box 2 through the filter screen 15, one end of the oil inlet pipe 21 penetrates through the drying box 2 and one end of the heat conduction oil pipe 26, the other end of the oil inlet pipe 21 is connected with one end of the heating box 1, the hot oil pump 12 is fixedly connected to the bottom of the inner wall of the connecting frame 3, the output end of the oil pump 12 is connected with a first oil outlet pipe 22, one end of the first oil outlet pipe 2 is connected with one end of the first oil outlet pipe 1 and one end of the first oil outlet pipe 22 is connected with one end of the other end of the first oil outlet pipe 2 and 2 is connected with the other end of the second oil outlet pipe 23, which runs through the second oil pipe 23 and is connected with the other end of the other end 2 and 23;
according to the structural design, when hot oil circulates, the heat conduction oil in the heating chamber 1 is heated through the heating plate 25, so that the hot oil pump 12 is electrified, the heat conduction oil in the heat conduction oil pipe 26 is pumped into the heating chamber 1 through the second oil outlet pipe 23 and the first oil outlet pipe 22, the pressure in the heat conduction oil pipe 26 is reduced, the hotter heat conduction oil on the upper layer of the heating chamber 1 is sucked into the heat conduction oil pipe 26 through the oil inlet pipe 21, the air flow on the surface of the heat conduction oil pipe 26 is accelerated through the cooling fan 28, the heat of the heat conduction oil pipe 26 is transferred into the drying box 2, and then the heat conduction oil cooled in the heat conduction oil pipe 26 is pumped into the heating chamber 1 through the second oil outlet pipe 23, the heat oil pump 12 and the first oil outlet pipe 22, so that the circulation of the heat conduction oil is realized, the influence of the heat conduction oil on the heat oil pump 12 can be effectively reduced, the service life of the heat pump 12 is prolonged, and the heat loss is reduced.
Referring to fig. 1-4, in other embodiments:
the top of the other end of the heating chamber 1 is fixedly connected with an oil filling port 18, when the heat conduction oil in the heating chamber 1 is reduced, the heat conduction oil is added into the heating chamber 1 through the oil filling port 18, the bottom of the inner wall of the connecting frame 3 is fixedly connected with a controller 13, the model of the controller 13 is selected to be SC200, one side of the inner wall of the drying box 2 is fixedly connected with a liquid level sensor 20, the liquid level sensor 20 is used for detecting the liquid level of the heat conduction oil in the heating chamber 1, the top of the inner wall of the drying box 2 is fixedly connected with a temperature sensor 19, the temperature sensor 19 is used for detecting the temperature in the inner lining plate 16, and the temperature sensor 19, the hot oil pump 12, the heating wire 11, the motor 4 and the cooling fan 28 are electrically connected with the controller 13;
according to the structural design, the temperature sensor 19 detects the temperature inside the lining plate 16 and transmits a signal to the controller 13, and the controller 13 controls the on-off of the electric circuits of the electric heating wire 11, the hot oil pump 12 and the cooling fan 28 to control the temperature inside the lining plate 16, so that constant-temperature drying is realized, and the practicability of the device is improved.
From the above, it can be seen that:
the utility model aims at the technical problems that: the existing longan dryer has the problems of large heat loss, low drying efficiency, uneven heat distribution and the like; the technical scheme of each embodiment is adopted. Meanwhile, the implementation process of the technical scheme is as follows:
in use, longan is placed in the longan tray 6, the longan tray 6 is inserted in the inner lining plate 16 through a handle, the upper part of the air outlet 7 is powered on through the heating wire 11 after the isolating door 17 is closed, thereby heating, the heat conduction oil in the heating chamber 1 is heated through the heating plate 25 and the soaking piece 29, the stirring impeller 24 is driven to rotate through the motor 4, the heat conduction oil in the heating chamber 1 is stirred, the flow speed of the heat conduction oil on the surface of the soaking piece 29 is accelerated, the heat of the heat conduction oil is more uniform, the heat conduction oil in the heating chamber 1 is heated to a proper temperature, the heat pump 12 is powered on, the heat conduction oil in the heat conduction oil pipe 26 is pumped into the heating chamber 1 through the second oil outlet pipe 23 and the first oil outlet pipe 22, so that the pressure in the heat conduction oil pipe 26 is reduced, the hotter heat conduction oil on the upper layer of the heating chamber 1 is sucked into the heat conduction oil pipe 26 through the oil inlet pipe 21, the air flow on the surface of the heat conduction oil pipe 26 is accelerated through the cooling fan 28, the heat of the heat conduction oil pipe 26 is transferred into the drying box 2, the inside of the drying box 2 is heated, the longan in each layer of longan tray 6 is uniformly dried through the air outlet 7, the longan in the drying box 2 is heated more uniformly, and the consistency of the longan quality can be effectively improved;
the temperature inside the lining plate 16 is detected by the temperature sensor 19, signals are transmitted to the controller 13, and the temperature inside the lining plate 16 is controlled by controlling the on-off of the electric circuits of the electric heating wire 11, the hot oil pump 12 and the cooling fan 28 through the controller 13, so that constant-temperature drying is realized, and the practicability of the device is improved;
through above-mentioned setting, this application must solve above-mentioned technical problem, simultaneously, realizes following technical effect:
the heat conduction oil in the heating chamber 1 is heated to a proper temperature through the heating plate 25, the interior of the drying box 2 is heated through the heat exchange mechanism, and the longan in each layer of longan tray 6 is uniformly dried through the air outlet 7, so that the longan in the drying box 2 is heated more uniformly, and the consistency of the longan quality can be effectively improved;
the contact area between the soaking piece 29 and the heat conduction oil can be increased, the heating speed of the heat conduction oil in the heating chamber 1 is improved, and the phenomenon that the heat conduction oil is carbonized on the surfaces of the soaking piece 29 and the heating plate 25 due to overhigh temperature of the heating plate 25 and the soaking piece 29 is reduced;
the stirring impeller 24 is driven to rotate by the motor 4 to stir the heat conduction oil in the heating chamber 1, so that the flow speed of the heat conduction oil on the surface of the soaking piece 29 is accelerated, the heat conduction oil is heated more uniformly, the heating efficiency is further improved, and the carbonization phenomenon of the heat conduction oil is further improved;
the temperature inside the lining plate 16 is detected by the temperature sensor 19, signals are transmitted to the controller 13, and the temperature inside the lining plate 16 is controlled by controlling the on-off of the electric circuits of the electric heating wire 11, the hot oil pump 12 and the cooling fan 28 through the controller 13, so that constant-temperature drying is realized, and the practicability of the device is improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (8)

1. The utility model provides a hot oil circulating device of longan stoving case, its characterized in that, including heating chamber (1) and stoving case (2), heating chamber (1) fixed connection is in one side of stoving case (2), the internally mounted of heating chamber (1) has hot plate (25) for heat transfer oil heating in heating chamber (1) produces heat, the inside fixedly connected with interior welt (16) of stoving case (2), place multilayer longan tray (6) in interior welt (16), the bottom of interior welt (16) just is located the internally mounted of stoving case (2) has heat transfer mechanism, heat transfer mechanism is used for blowing every layer of longan tray (6) with heat generation heat.
2. The hot oil circulation device of a longan drying box according to claim 1, characterized in that a plurality of air outlets (7) are symmetrically formed in two sides of the interior of the lining plate (16) and at the bottom of the longan tray (6), six supporting legs (10) are uniformly distributed and fixed at four corners of the bottom of the drying box (2) and one side of the bottom of the heating chamber (1), an isolation door (17) is hinged to the front of the drying box (2), and an observation window (14) is arranged on the front of the heating chamber (1).
3. The hot oil circulation device of the longan drying box according to claim 1, wherein the heating plate (25) is embedded with an electric heating wire (11), and a plurality of soaking pieces (29) are arranged on the upper surface of the heating plate (25).
4. A hot oil circulation device of a longan drying box according to claim 3, characterized in that, the upper surface of heating chamber (1) has linked firmly motor (4), be provided with heat insulating sheet (5) between motor (4) and heating chamber (1), the output of motor (4) runs through heating chamber (1) and heat insulating sheet (5) fixedly connected with impeller (24), impeller (24) are located the inside of heating chamber (1), and are located directly over soaking piece (29).
5. The hot oil circulation device of a longan drying box according to claim 1, wherein one end of the heating chamber (1) is fixedly connected with a connecting frame (3), the heating chamber (1) is fixedly connected to one side of the drying box (2) through the connecting frame (3), the heat exchange mechanism comprises a heat conduction oil pipe (26), a supporting steel net (27) and a cooling fan (28), two ends of the supporting steel net (27) are fixedly connected to two sides of the inner wall of the drying box (2), the heat conduction oil pipe (26) is fixedly connected to the upper surface of the supporting steel net (27), the cooling fan (28) is fixedly connected to the bottom of the inner wall of the drying box (2), an air inlet (30) is formed in the bottom of the drying box (2) and located under the cooling fan (28), and a filter screen (15) is fixedly connected to the inside of the air inlet (30).
6. The longan drying box hot oil circulation device according to claim 5, wherein the heat exchange mechanism further comprises a hot oil pump (12) and an oil inlet pipe (21), one end of the oil inlet pipe (21) penetrates through the drying box (2) and is connected with one end of a heat conducting oil pipe (26), the other end of the oil inlet pipe (21) is connected with one end of the heating chamber (1), the hot oil pump (12) is fixedly connected to the bottom of the inner wall of the connecting frame (3), the output end of the hot oil pump (12) is connected with a first oil outlet pipe (22), one end of the first oil outlet pipe (22) is connected with one end of the heating chamber (1), the first oil outlet pipe (22) is located below the oil inlet pipe (21), the input end of the hot oil pump (12) is connected with a second oil outlet pipe (23), and the second oil outlet pipe (23) penetrates through the drying box (2) and is connected with the other end of the heat conducting oil pipe (26).
7. The longan drying box hot oil circulation device according to claim 6, wherein the top of the other end of the heating chamber (1) is fixedly connected with an oil filling port (18), a temperature sensor (19) is installed on the oil filling port (18), a controller (13) is fixedly connected to the bottom of the inner wall of the connecting frame (3), a liquid level sensor (20) is fixedly connected to one side of the inner wall of the drying box (2), a temperature sensor (19) is fixedly connected to the top of the inner wall of the drying box (2), and the hot oil pump (12), the heating wire (11), the temperature sensor (19), the motor (4) and the cooling fan (28) are all electrically connected with the controller (13).
8. The hot oil circulation device of the longan drying box according to claim 1, wherein an exhaust port (8) is fixedly connected to the top of the drying box (2), and a dust cover (9) is fixedly connected to the top of the exhaust port (8).
CN202320124256.8U 2023-01-12 2023-01-12 Hot oil circulation device of longan drying box Active CN218993877U (en)

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CN202320124256.8U CN218993877U (en) 2023-01-12 2023-01-12 Hot oil circulation device of longan drying box

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