Solid powder hot air drying oven

Abstract

This utility model discloses a hot air drying oven for solid powder, including a box body with a drying chamber inside. An airflow circulation channel is formed between the drying chamber and the box body. The hot air drying oven also includes a hot air supply component. The air inlet of the hot air supply component is connected to the airflow circulation channel, and the air outlet of the hot air supply component is connected to the drying chamber. A hot air circulation through hole is provided between the drying chamber and the airflow circulation channel. An air drying device is provided inside the airflow circulation channel. The hot air supplied by the hot air supply component can enter the drying chamber to dry the solid powder. The dried hot air can enter the airflow circulation channel through the hot air circulation through hole. The hot air inside the airflow circulation channel can absorb water vapor in the hot air and dry it. The dried hot air is returned to the hot air supply component. Therefore, the hot air can be recycled, reducing the energy consumption of the drying oven when drying solid powder, which is energy-saving and environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of drying oven technology, and in particular to a hot air drying oven for solid powders. Background Technology

[0002] Chemical reagents are substances with specific chemical properties, including solid powders such as sodium hydroxide and copper sulfate. Some experiments require the use of anhydrous or low-water-content reagents to obtain accurate and reliable experimental results. Drying can remove moisture or water absorbed during storage or production to ensure their purity and stability. Hot air drying ovens are drying equipment used to dry chemical reagents.

[0003] Chinese utility model patent CN220728783U discloses a hot air drying oven for drying and testing samples. The oven includes a chamber with a left inner cavity on the left side and a right inner cavity on the right side. A motor housing is located on the left inner wall of the left inner cavity, and a fan blade is located on the right side of the motor housing. An electric heating wire is located on the right inner wall of the left inner cavity. A base housing is located at the bottom of the right inner cavity, and a base is located inside the base housing. A turntable is located on the top of the base. A ventilation window is located in the middle of the back of the oven. This oven is used for drying and testing samples. The hot air drying oven uses a base and a turntable to place the product to be dried on the turntable. After the power is turned on, the electric heating wire starts heating, and the hot air is blown onto the product surface by the fan blades, which drives the surrounding air to heat up, thereby raising the surface temperature of the product and evaporating the surface moisture to achieve drying. The air exchange between the inside and outside is achieved through the ventilation window. The gas containing a large amount of water vapor inside is discharged, and the dry gas outside enters. At the same time, the air pressure inside and outside the equipment is stabilized and balanced. The disadvantage is that the dried hot air is discharged through the ventilation window, and the hot air cannot be recycled, resulting in high energy consumption and poor energy saving effect. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a hot air drying oven for drying test samples. This invention solves the technical problems of existing hot air drying ovens where the hot air after drying is discharged through the ventilation window, preventing the hot air from being recycled, resulting in high energy consumption and poor energy-saving effect.

[0005] To achieve the above technical objectives, the present invention provides a hot air drying oven for solid powder, comprising a box body, a drying chamber inside the box body, an airflow circulation channel between the drying chamber and the box body, and a hot air supply component. The inlet end of the hot air supply component is connected to the airflow circulation channel, and the exhaust end of the hot air supply component is connected to the drying chamber. A hot air circulation through hole is provided between the drying chamber and the airflow circulation channel, and an air drying device is provided inside the airflow circulation channel.

[0006] Furthermore, the hot air supply assembly includes a fan and a heating device. A hot air chamber is provided between the drying chamber and the airflow circulation channel. Both the fan and the heating device are installed inside the hot air chamber. An air inlet is provided between the hot air chamber and the airflow circulation channel, and an exhaust port is provided between the hot air chamber and the drying chamber.

[0007] Furthermore, a first filter screen is installed inside the hot air circulation through hole, and a second filter screen is installed inside the exhaust port.

[0008] Furthermore, the heating device uses an electric heating wire.

[0009] Furthermore, the drying chamber is equipped with multiple trays at equal intervals from top to bottom.

[0010] Furthermore, both sides of the tray are equipped with strip-shaped sliders, and both sides of the inner wall of the drying chamber are equipped with strip-shaped grooves that cooperate with the strip-shaped sliders. The tray is slidably placed inside the drying chamber by the strip-shaped sliders and the strip-shaped grooves.

[0011] Furthermore, the air drying device includes a drawer-type desiccant box located inside the airflow circulation channel. The drawer-type desiccant box is hollow inside, with a closed bottom and an open top. The drawer-type desiccant box contains desiccant, and both sides of the drawer-type desiccant box have ventilation holes, with a third filter screen inside the ventilation holes.

[0012] Furthermore, an opening is provided on the front side of the drying chamber, and a door is hinged to the opening.

[0013] The beneficial effects of this utility model include:

[0014] 1. The hot air supplied by the hot air supply component can enter the drying chamber to dry the solid powder. The dried hot air can enter the airflow circulation channel through the hot air circulation hole. The hot air in the airflow circulation channel can absorb water vapor in the hot air through the air drying device to dry the hot air. The dried hot air is returned to the hot air supply component. Therefore, the hot air can be recycled, reducing the energy consumption of the drying box when drying solid powder, which is energy-saving and environmentally friendly.

[0015] 2. The air drying device includes a drawer-type desiccant box located inside the airflow circulation channel. The drawer-type desiccant box is hollow inside, with a closed bottom and an open top. The drawer-type desiccant box contains desiccant, and there are vents on both sides of the drawer-type desiccant box. A third filter screen is installed inside the vents. The desiccant can absorb water vapor in the hot air and dry the hot air. When the desiccant becomes ineffective after a period of use, the drawer-type desiccant box can be removed from the airflow circulation channel to replace the desiccant. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a solid powder hot air drying oven according to an embodiment of this utility model;

[0017] Figure 2 This is another state diagram of the solid powder hot air drying oven according to an embodiment of this utility model;

[0018] Figure 3 This is a cross-sectional view of a solid powder hot air drying oven according to an embodiment of this utility model;

[0019] In the diagram: 1. Box body; 11. Drying chamber; 111. Strip slide; 12. Airflow circulation channel; 13. Hot air circulation through hole; 14. Hot air cavity; 15. Air inlet; 16. Exhaust port; 2. Hot air supply assembly; 21. Fan; 22. Heating device; 3. Air drying device; 31. Drawer-type desiccant box; 311. Vent hole; 32. Desiccant; 33. Third filter screen; 4. First filter screen; 5. Second filter screen; 6. Tray; 61. Strip slide; 7. Box door. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] This utility model embodiment provides a hot air drying oven for solid powders, such as... Figure 1-3 As shown, the drying chamber includes a housing 1, which contains a drying chamber 11. An airflow circulation channel 12 is formed between the drying chamber 11 and the housing 1. The hot air drying chamber also includes a hot air supply component 2. The air inlet of the hot air supply component 2 is connected to the airflow circulation channel 12, and the exhaust end of the hot air supply component 2 is connected to the drying chamber 11. A hot air circulation through hole 13 is provided between the drying chamber 11 and the airflow circulation channel 12. An air drying device 3 is provided inside the airflow circulation channel 12. An opening is provided on the front side of the drying chamber 11, and a door 7 is hinged to the opening. The hot air supplied by the hot air supply component 2 can enter the drying chamber 11 to dry the solid powder. The dried hot air can enter the airflow circulation channel 12 through the hot air circulation through hole 13. The hot air inside the airflow circulation channel 12 can absorb water vapor in the hot air through the air drying device 3 to dry the hot air. The dried hot air is returned to the hot air supply component 2. Therefore, the hot air can be recycled, reducing the energy consumption of the drying chamber when drying solid powder, which is energy-saving and environmentally friendly.

[0022] It should be noted that the airflow circulation channel 12 is located on the left and right sides and the bottom of the drying chamber 11, and the airflow circulation channel 12 is separated from the drying chamber 11 by a partition.

[0023] In this embodiment, the hot air supply assembly 2 includes a fan 21 and a heating device 22, which is either an electric heating wire or an electric heating tube. A hot air chamber 14 is provided between the drying chamber 11 and the airflow circulation channel 12. Both the fan 21 and the heating device 22 are installed inside the hot air chamber 14. An air inlet 15 is provided between the hot air chamber 14 and the airflow circulation channel 12, and an exhaust port 16 is provided between the hot air chamber 14 and the drying chamber 11. The heating device 22 can heat the gas inside the hot air chamber 14, and the heated gas can be blown into the hot air chamber 14 by the fan 21. A first filter screen 4 is provided inside the hot air circulation through hole 13, which can prevent solid powder inside the drying chamber 11 from entering the airflow circulation channel 12. At the same time, a second filter screen 5 is provided inside the exhaust port 16, which can prevent solid powder inside the drying chamber 11 from entering the hot air chamber 14.

[0024] It should be noted that the hot air chamber 14 is separated from the drying chamber 11 and the airflow circulation channel 12 by a partition.

[0025] In this embodiment, multiple trays 6 are arranged at equal intervals from top to bottom inside the drying chamber 11. The trays 6 are used to place solid powder. At the same time, strip sliders 61 are provided on both sides of the trays 6. Strip grooves 111 that cooperate with the strip sliders 61 are provided on both sides of the inner wall of the drying chamber 11. The trays 6 are slidably disposed inside the drying chamber 11 by the strip sliders 61 and the strip grooves 111, which makes it convenient to put the trays 6 into or take them out of the drying chamber 11, thereby facilitating the handling of solid powder.

[0026] It should be noted that there are multiple exhaust ports 16, which are equally spaced from top to bottom between the drying chamber 11 and the hot air chamber 14. The number of exhaust ports 16 is equal to the number of trays 6, so that the multiple exhaust ports 16 correspond to the multiple trays 6 respectively, and the hot air blown out by the multiple exhaust ports 16 dries the solid powder on the multiple trays 6 respectively. There are multiple hot air circulation through holes 13, which are equally spaced from top to bottom between the drying chamber 11 and the airflow circulation channel 12. The number of hot air circulation through holes 13 is equal to the number of trays 6, so that the multiple hot air circulation through holes 13 correspond to the multiple trays 6 respectively, and the hot air after drying the solid powder on the multiple trays 6 enters the airflow circulation channel 12 through the multiple hot air circulation through holes 13.

[0027] In this embodiment, the air drying device 3 includes a drawer-type desiccant box 31 disposed inside the airflow circulation channel 12. The drawer-type desiccant box 31 is hollow inside, with a closed bottom and an open top. A desiccant 32 is disposed inside the drawer-type desiccant box 31. Ventilation holes 311 are provided on both sides of the drawer-type desiccant box 311. A third filter screen 33 is disposed inside the ventilation holes 311. Water vapor in the hot air can be absorbed by the desiccant 32, thus drying the hot air. At the same time, when the desiccant becomes ineffective after a period of use, the drawer-type desiccant box 31 can be removed from the airflow circulation channel 12 to replace the desiccant 32.

[0028] In this embodiment of the solid powder hot air drying oven, the hot air supplied by the hot air supply component 2 can enter the drying chamber 11 to dry the solid powder. The dried hot air can enter the airflow circulation channel 12 through the hot air circulation hole 13. The hot air in the airflow circulation channel 12 can absorb water vapor in the hot air through the air drying device 3 to dry the hot air. The dried hot air is then returned to the hot air supply component 2. Therefore, the hot air can be recycled, reducing the energy consumption of the drying oven when drying solid powder, which is energy-saving and environmentally friendly.

[0029] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A hot air drying oven for solid powder, comprising a box body (1), characterized in that, The box (1) is provided with a drying chamber (11), and an airflow circulation channel (12) is formed between the drying chamber (11) and the box (1). The hot air drying box also includes a hot air supply component (2). The air inlet of the hot air supply component (2) is connected to the airflow circulation channel (12), and the exhaust end of the hot air supply component (2) is connected to the drying chamber (11). A hot air circulation through hole (13) is provided between the drying chamber (11) and the airflow circulation channel (12). An air drying device (3) is provided inside the airflow circulation channel (12).

2. The solid powder hot air drying oven according to claim 1, characterized in that, The hot air supply assembly (2) includes a fan (21) and a heating device (22). A hot air chamber (14) is provided between the drying chamber (11) and the airflow circulation channel (12). The fan (21) and the heating device (22) are both installed inside the hot air chamber (14). An air inlet (15) is provided between the hot air chamber (14) and the airflow circulation channel (12). An exhaust port (16) is provided between the hot air chamber (14) and the drying chamber (11).

3. The solid powder hot air drying oven according to claim 2, characterized in that, The hot air circulation through hole (13) is provided with a first filter screen (4), and the exhaust port (16) is provided with a second filter screen (5).

4. The solid powder hot air drying oven according to claim 2, characterized in that, The heating device (22) uses an electric heating wire.

5. The solid powder hot air drying oven according to claim 1, characterized in that, The drying chamber (11) is equipped with multiple trays (6) arranged at equal intervals from top to bottom.

6. The solid powder hot air drying oven according to claim 5, characterized in that, The tray (6) is provided with strip sliders (61) on both sides, and the drying chamber (11) is provided with strip grooves (111) on both sides of the inner wall of the drying chamber (11). The tray (6) is slidably disposed inside the drying chamber (11) by means of the strip sliders (61) and the strip grooves (111).

7. The solid powder hot air drying oven according to claim 2, characterized in that, The air drying device (3) includes a drawer-type desiccant box (31) located inside the airflow circulation channel (12). The drawer-type desiccant box (31) is hollow inside, closed at the bottom, and open at the top. The drawer-type desiccant box (31) contains a desiccant (32). Both sides of the drawer-type desiccant box (31) have ventilation holes (311). The ventilation holes (311) contain a third filter screen (33).

8. The solid powder hot air drying oven according to claim 1, characterized in that, The drying chamber (11) has an opening on the front side, and a door (7) is hinged to the opening.

Images