Electrothermal blast constant-temperature drying box

Abstract

The utility model relates to the technical field of drying boxes, in particular to an electrothermal blowing constant-temperature drying box which comprises a box body, heating modules, blowing modules and a temperature control module are arranged in the box body, and the heating modules are arranged on the two sides of the box body; the blast module is arranged at the top end of the box; the temperature control module is fixed on a front side panel of the box body, and the temperature control module is electrically connected with the heating module and the air blowing module; a draining device for collecting water generated by drying is further arranged at the bottom of the box body and comprises a draining basket, a draining plate and a flow guide pipe, water retaining strips are arranged at the front end and the rear end of the draining plate, water passing holes are formed in the draining plate, the draining basket is arranged below the draining plate, and the draining basket is communicated with the draining plate through the flow guide pipe; and a drying agent is placed in the draining basket. According to the sample drying box, moisture in a sample can be rapidly evaporated, meanwhile, moisture generated in the drying process can be collected, and therefore the dehumidification efficiency in the box body is improved, and the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying boxes, in particular to an electric heating blast constant temperature drying box. Background Art

[0002] Drying ovens are divided into two categories: electric blast drying ovens and vacuum drying ovens, depending on the type of drying material. They are now widely used in various fields. In highway engineering tests, electric blast drying ovens are used to conduct moisture and mud content tests on various raw materials such as geotechnical tests and aggregates, asphalt concrete molding and other temperature control tests.

[0003] When the existing electric blast drying oven is used to dry the wet asphalt concrete samples, the samples will be placed in the drying oven during the heating process, which will produce water that will drip into the inside of the box, making it difficult to clean. At the same time, all the water is dried by the blower and desiccant, which not only reduces the drying effect, but also reduces the effect of moisture removal.

[0004] Therefore, there is an urgent need for an electric heating blast drying oven that can collect moisture and improve the drying effect. Utility Model Content

[0005] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the utility model is to provide an electric heating blast constant temperature drying oven, which can quickly evaporate the moisture of the sample and collect the moisture generated during the drying process, thereby accelerating the dehumidification efficiency inside the box and improving the drying efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electric heated blast constant temperature drying oven comprises a box body, wherein a heating module, an air blast module and a temperature control module are arranged in the box body, wherein the heating modules are arranged on both sides of the box body; the air blast module is arranged at the top of the box body, and is used to blow outside air into the box body; the temperature control module is fixed to the front side panel of the box body, and is used to control the heating temperature and dryness and humidity in the box body in real time, and the temperature control module is electrically connected to the heating module and the air blast module respectively; the bottom of the box body is also provided with a drain device for collecting moisture generated by drying, and the drain device comprises a drain basket, a drain plate and a guide pipe, water retaining strips are arranged at the front and rear ends of the drain plate, and a water hole is provided on the drain plate, the drain basket is arranged below the drain plate, and the drain basket and the drain plate are connected through the guide pipe, and a desiccant is placed in the drain basket.

[0008] Preferably, a plurality of tracks are further provided on the inner side wall of the box body, and the plurality of tracks are arranged equidistantly up and down, and a tray for placing materials is slidably connected to the upper side of the track, and a plurality of circular through holes are evenly opened on the tray.

[0009] Preferably, the heating module includes an electric heating tube and a heat reflecting plate, the electric heating tube is in a serpentine structure and is evenly distributed on the left and right sides of the inside of the box, and the electric heating tube is externally connected to a power supply; the heat reflecting plate is laterally arranged on the front and back sides of the box, and the heat reflecting plate is covered with a layer of heat reflecting resin coating.

[0010] Preferably, the blower module includes a blower, an air duct and an exhaust fan, the blower is arranged at the top of the box, and the air inlet of the blower is arranged toward the outside, and the air outlet of the blower is arranged toward the inside of the box; one end of the air duct is connected to the air outlet of the blower, and the other end is provided with multiple branches connected to the four sides of the box.

[0011] Preferably, the temperature control module includes a temperature controller, a control panel and a temperature sensor, the temperature controller is electrically connected to the control panel, the control panel is located on the front side of the box, and a plurality of operation buttons are arranged below the control panel, and a plurality of temperature sensors are arranged, and the plurality of temperature sensors are respectively arranged on the inner wall of the box.

[0012] Preferably, the box body comprises an outer frame and an inner frame, a gap between the outer frame and the inner frame is used to insulate heat, a plurality of heat dissipation holes are provided on both sides of the outer frame, and a plurality of ventilation holes are evenly provided on the inner side wall of the inner frame.

[0013] Preferably, a transparent flip door for real-time observation of drying conditions is provided on the front side of the outer frame, and the transparent flip door and the outer frame are closed by magnetic attraction.

[0014] Preferably, a lighting lamp is also provided on the top of the inner frame.

[0015] In summary, the beneficial effects of the utility model are:

[0016] The electric heating blast constant temperature drying oven of the utility model can quickly heat the oven by arranging a heating module in the oven, so that after the wet sample is placed in the oven, the internal moisture can be removed; at the same time, by arranging the strong wind generated by the blast module, the moisture on the surface of the wet sample will evaporate quickly and take away a part of the heat; in this way, the moisture inside the sample will be gradually removed, thereby achieving the drying effect; in addition, by arranging a drain device at the bottom of the oven, the moisture generated in the sample drying process can be collected and dried, thereby accelerating the dehumidification efficiency inside the oven and improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the utility model electric heating blast constant temperature drying oven;

[0018] Figure 2 It is a cross-sectional view of the electric heating blast constant temperature drying oven of the utility model;

[0019] Figure 3 yes Figure 2 A magnified view of the structure in the middle.

[0020] Description of reference numerals in the figures:

[0021] 1. Box body; 11. Outer frame; 111. Heat dissipation holes; 12. Inner frame; 121. Ventilation holes; 2. Heating module; 21. Electric heating tube; 22. Heat reflecting plate; 3. Blower module; 31. Blower; 32. Air duct; 33. Exhaust fan; 4. Temperature control module; 41. Thermostat; 42. Control panel; 43. Temperature sensor; 44. Operation button; 5. Drain device; 51. Drain basket; 52. Drain plate; 521. Water hole; 53. Guide pipe; 54. Water retaining strip; 6. Desiccant; 7. Track; 8. Tray; 81. Circular through hole; 9. Transparent flip door; 10. Lighting lamp. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0024] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] The following is combined with Figure 1-3 , an embodiment of an electric heating blast constant temperature drying oven of the utility model is further described in detail.

[0026] An electric heating blast constant temperature drying oven, such as Figure 1 and Figure 3 As shown, it includes a box body 1, in which a heating module 2, an air blowing module 3 and a temperature control module 4 are arranged, and the heating module 2 is arranged on both sides of the box body 1; the air blowing module 3 is arranged at the top of the box body 1, and is used to blow outside air into the box body 1; the temperature control module 4 is fixed to the front side panel of the box body 1, and is used to control the heating temperature and humidity in the box body 1 in real time, and the temperature control module 4 is electrically connected to the heating module 2 and the air blowing module 3 respectively; the bottom of the box body 1 is also provided with a drain device 5 for collecting and drying moisture, the drain device 5 includes a drain basket 51, a drain plate 52 and a guide pipe 53, the front and rear ends of the drain plate 52 are provided with water retaining strips 54, and the drain plate 52 is provided with a water hole 521, the drain basket 51 is arranged below the drain plate 52, and the drain basket 51 and the drain plate 52 are connected through the guide pipe 53, and a desiccant 6 is placed in the drain basket 51.

[0027] Specifically, an electric heating method is used to carry out a blower circulation drying test to ensure the temperature balance in the box. Vacuum drying uses a vacuum pump to extract the air in the box to make the atmospheric pressure in the box lower than normal pressure, so that the sample can be tested in a very clean state. During the test, since the sample will squeeze out the moisture in the body during the drying process, the fallen moisture will directly fall on the bottom of the box 1, resulting in low drying efficiency. Therefore, a drain plate 52 is set at the bottom of the box 1 for preliminary filtration and collection. The collected moisture enters the drain basket 51 from the guide pipe 53 and is absorbed by the desiccant 6 in the drain basket 51. Finally, the drain basket 51 is drawn out for cleaning. In order to prevent moisture from flowing into other systems during dripping, water retaining strips 54 are set on both sides of the drain plate 52 to prevent moisture from flowing out, thereby accelerating the dehumidification efficiency inside the box 1 and improving the drying efficiency, thereby increasing the practicality of the drying box.

[0028] In this embodiment, if Figure 1As shown, a plurality of tracks 7 are provided on the inner wall of the box body 1, and the plurality of tracks 7 are arranged equidistantly up and down, and a tray 8 for placing materials is slidably connected to the upper side of the track 7, and a plurality of circular through holes 81 are evenly opened on the tray 8.

[0029] Specifically, a plurality of tracks 7 are provided inside the box body 1 to facilitate the loading of samples. A tray 8 is connected by sliding on the track 7. The tray 8 is used to place the samples. When taking or placing the samples, it can be completed by simply pulling out the tray 8, which is convenient and quick. At the same time, in order to better adapt to the changes produced during the sample heating process, a plurality of circular through holes 81 are opened on the tray 8. On the one hand, the circular through holes 81 can facilitate the uniform transfer of heat to the trays 8 on each layer. On the other hand, they can also guide the moisture generated by the sample heating to fall into the drain basket 51 arranged below for collection.

[0030] In this embodiment, if Figure 1 As shown, the heating module 2 includes an electric heating tube 21 and a heat reflecting plate 22. The electric heating tube 21 is in a serpentine structure and is evenly distributed on the left and right sides of the inside of the box 1, and the electric heating tube 21 is externally connected to a power supply; the heat reflecting plate 22 is horizontally arranged on the front and back sides of the box 1, and the heat reflecting plate 22 is covered with a layer of heat reflecting resin coating.

[0031] Specifically, when the electric heating tube 21 heats the box body 1, it converts electrical energy into thermal energy, thereby increasing the temperature inside the box body 1, and during the drying process, the electric heating tube 21 will continue to provide thermal energy, so that the temperature of the drying box is maintained within the set drying temperature range; at the same time, in order to maximize the heat inside the box body 1, a heat reflecting plate 22 is provided on the front and rear sides of the box body 1, and the heat reflecting resin coating coated on the heat reflecting plate 22 is used to evenly reflect heat to all corners of the box body 1, so that the sample is heated evenly, thereby accelerating its drying efficiency.

[0032] In this embodiment, if Figure 2 As shown, the blowing module 3 includes a blower 31, an air duct 32 and an exhaust fan 33. The blower 31 is arranged at the top of the box body 1, and the air inlet of the blower 31 is arranged toward the outside, and the air outlet of the blower 31 is arranged toward the inside of the box body 1; one end of the air duct 32 is connected to the air outlet of the blower 31, and the other end is provided with multiple branches connected to the four sides of the box body 1.

[0033] Specifically, when the heating module 2 starts heating, the blower 31 starts working and is able to generate strong wind and blow hot air into the box 1 through the air duct 32. The strong wind generated by the blower 31 will quickly evaporate the moisture on the surface of the wet sample and take away part of the heat; in this way, the moisture inside the sample will be gradually removed, thereby achieving a drying effect.

[0034] In order to keep the humidity in the box 1 within a certain range, a humidity control system is also provided inside the drying box. The humidity control system will detect the humidity in the box 1 and control the operation of the dehumidification device according to the set value. The dehumidification device can be a desiccant, a dehumidifier or a dehumidification fan, etc., which can gradually reduce the humidity in the box 1 to ensure that the items can be completely dried within a certain period of time.

[0035] In this embodiment, the temperature control module 4 includes a temperature controller 41, a control panel 42 and a temperature sensor 43. The temperature controller 41 is electrically connected to the control panel 42. The control panel 42 is located on the front side of the box 1, and a plurality of operation buttons 44 are arranged below the control panel 42. A plurality of temperature sensors 43 are arranged, and the plurality of temperature sensors 43 are respectively arranged on the inner wall of the box 1.

[0036] Specifically, the temperature sensor 43 can detect the heating temperature in the box 1 in real time, and feed back the temperature information to the temperature controller 41. The control panel 42 controls the setting of the heating temperature, the heating time and the insulation time, so that the drying process is fully automated and does not require manual adjustment.

[0037] In this embodiment, the box body 1 includes an outer frame 11 and an inner frame 12. The gap between the outer frame 11 and the inner frame 12 is used to isolate heat. A plurality of heat dissipation holes 111 are opened on both sides of the outer frame 11, and a plurality of ventilation holes 121 are evenly opened on the inner wall of the inner frame 12.

[0038] Specifically, the box body 1 is configured to be composed of an outer frame 11 and an inner frame 12. The advantage of such a design is that, on the one hand, the heat can be isolated in the inner frame 12 to improve the thermal insulation effect, and on the other hand, the heat can be isolated by the outer frame 11 to avoid being scalded; at the same time, the heat dissipation holes 111 opened on both sides of the outer frame 11 can accelerate the dissipation of heat inside the inner frame 12 to achieve a rapid cooling effect; and the ventilation holes 121 opened on the side wall of the inner frame 12 can evenly transfer the heat generated by the heating tube and the heat generated by the blowing module 3 to the sample through the ventilation holes, thereby improving the drying efficiency.

[0039] In this embodiment, a transparent flip door 9 for real-time observation of the drying condition is provided on the front side of the outer frame 11 , and the transparent flip door 9 and the outer frame 11 are closed by magnetic attraction.

[0040] Specifically, the transparent flip door 9 can be made of high-temperature resistant glass material so that the heating process of the sample can be observed in real time, thereby better controlling the heating temperature and temperature control time. At the same time, a magnetic attraction method is used between the transparent flip door 9 and the outer frame 11 to achieve a better sealing effect, thereby avoiding partial heat loss during the heating process and affecting the drying effect.

[0041] In order to further improve the practicality of the drying box, a lighting lamp 10 is further provided on the top of the inner frame 12. The lighting lamp 10 can be controlled by voice or buttons, so that it is convenient for lighting and observation during the sample drying process.

[0042] The working principle of this utility model:

[0043] In a drying experiment on road soil containing moisture to obtain relevant measurement data, the sample is first placed in the box 1 through the tray 8, the power is turned on, and the temperature control module 4 controls the heating module 2 to heat to a preset temperature and maintain a constant temperature after the heating is completed. In order to improve the heating efficiency, the heat generated by the heating module 2 is blown from all directions to the inside of the box 1 through the blowing module 3 during heating, so that the sample is heated more evenly, and the moisture dripping from the sample during the drying process can enter the drain basket 51 through the drain plate 52, and the desiccant 6 placed in the drain basket 51 quickly dries the moisture, thereby improving the drying efficiency.

[0044] It is worth mentioning that the electric blast constant temperature drying oven of the utility model is suitable for various types of tests, such as geotechnical tests, aggregate moisture content tests, asphalt concrete molding and other temperature control tests; its high-precision temperature control capability and stable working performance make it an ideal tool in the field of highway engineering tests. Whether it is laboratory research or field testing, the electric blast constant temperature drying oven of the utility model can provide a reliable test environment to meet the needs under different test conditions.

[0045] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electric heating blast constant temperature drying oven, comprising a box body, characterized in that: A heating module, a blower module and a temperature control module are arranged in the box, and the heating modules are arranged on both sides of the box; the blower module is arranged at the top of the box, and is used to blow outside air into the box; the temperature control module is fixed to the front side panel of the box, and is used to control the heating temperature and humidity in the box in real time, and the temperature control module is electrically connected to the heating module and the blower module respectively; the bottom of the box is also provided with a drain device for collecting moisture generated by drying, and the drain device includes a drain basket, a drain plate and a guide pipe, the front and rear ends of the drain plate are provided with water retaining strips, and the drain plate is provided with water holes, the drain basket is arranged below the drain plate, and the drain basket and the drain plate are connected through the guide pipe, and a desiccant is placed in the drain basket.

2. The electric heating blast constant temperature drying oven according to claim 1, characterized in that: A plurality of tracks are also arranged on the inner side wall of the box body, and the plurality of tracks are arranged equidistantly up and down, and a tray for placing materials is slidably connected to the upper side of the track, and a plurality of circular through holes are evenly opened on the tray.

3. The electric heating blast constant temperature drying oven according to claim 2, characterized in that: The heating module includes an electric heating tube and a heat reflecting plate. The electric heating tube is in a serpentine structure and is evenly distributed on the left and right sides of the box, and the electric heating tube is externally connected to a power supply; the heat reflecting plate is horizontally arranged on the front and back sides of the box, and is covered with a layer of heat reflecting resin coating.

4. The electric heating blast constant temperature drying oven according to claim 3, characterized in that: The blower module includes a blower, an air duct and an exhaust fan. The blower is arranged at the top of the box, and the air inlet of the blower is arranged toward the outside, and the air outlet of the blower is arranged toward the inside of the box; one end of the air duct is connected to the air outlet of the blower, and the other end is provided with multiple branches connected to the four sides of the box.

5. The electric heating blast constant temperature drying oven according to claim 4, characterized in that: The temperature control module includes a temperature controller, a control panel and a temperature sensor. The temperature controller is electrically connected to the control panel. The control panel is located on the front side of the box, and a plurality of operation buttons are arranged below the control panel. There are a plurality of temperature sensors, and the plurality of temperature sensors are respectively arranged on the inner wall of the box.

6. The electric heating blast constant temperature drying oven according to claim 5, characterized in that: The box body comprises an outer frame and an inner frame, the gap between the outer frame and the inner frame is used to insulate heat, a plurality of heat dissipation holes are provided on both sides of the outer frame, and a plurality of ventilation holes are evenly provided on the inner side wall of the inner frame.

7. The electric heating blast constant temperature drying oven according to claim 6, characterized in that: A transparent flip door for real-time observation of drying conditions is provided on the front side of the outer frame, and the transparent flip door and the outer frame are closed by magnetic attraction.

8. The electric heating blast constant temperature drying oven according to claim 7, characterized in that: A lighting lamp is also arranged on the top of the inner frame.

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