Vacuum drying oven

Abstract

The utility model relates to the technical field of drying box devices, in particular to a vacuum drying box which comprises a drying box body, a hot blowing mechanism is installed at the upper end of the drying box body, a barometer is assembled on the surface of the drying box body, a control switch is assembled at the lower end of the barometer, and a control panel is arranged on the left side of the barometer. The drying device comprises a drying box body, a sealing door is installed in the middle of the drying box body, a handle is installed on the surface of the sealing door, an air suction pipe is assembled on the side surface of the drying box body, the left side of the air suction pipe is connected with an air suction pump, and meanwhile a motor is installed on the left side of the air suction pump. The temperature-resistant glass is designed to be in a transparent state to observe the drying condition of internal objects and adjust the drying time of the internal objects, in addition, the air supply mechanism is installed at the upper end of the device and matched with the heating internal resistor, heat is transferred into the device, and the heat is evenly distributed through pushing of wind power; and the bottom sharp corner is matched with the drying box to collect water mist.

Description

Technical Field

[0001] This utility model relates to the technical field of drying oven devices, specifically a vacuum drying oven. Background Technology

[0002] Vacuum drying ovens are specifically designed for drying heat-sensitive, easily decomposed, and easily oxidized substances. During operation, they maintain a certain degree of vacuum within the working chamber and can be filled with inert gas. They are particularly suitable for rapidly drying complex items. Vacuum drying ovens include condensate water pipes and vacuum pump pipes. The gas in the vacuum pump pipes is a mixture of air and water vapor. This mixture containing water vapor has an adverse effect on the vacuum pump and needs to be treated to remove water vapor before entering the vacuum pump. In addition, vacuum drying ovens commonly found on the market are large in size and heavy in weight.

[0003] For example, the vacuum drying oven with announcement number CN103335493A includes a main body, which includes an operation panel and a chamber. The operation panel is located at the front of the main body and is equipped with a temperature controller, a vacuum gauge, a vacuum valve, and a power switch. An exhaust valve is located at the rear of the main body. A timer is located on the control panel and is electrically connected to the power switch. A removable partition is provided inside the chamber. There are two vacuum valves. The inner wall of the chamber and the outer surface of the removable partition are both provided with an anti-corrosion layer.

[0004] The above-mentioned device adopts this technical solution, which sets the drying temperature and drying time at the beginning of the drying process. When the drying reaches the end, the timer can control the power switch to turn off, thereby stopping the drying. In this way, the control of the drying time is more accurate, and it can also reduce manual labor and bring convenience to production. However, this method is also cumbersome. When encountering special items to be dried, it is often difficult to judge the required drying time. This design can easily cause the items to be in a semi-dry and semi-moist state, which can lead to drying failure and even damage to the items. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum drying oven to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum drying oven, including a drying chamber body, a hot blowing mechanism installed at the upper end of the drying chamber body, a pressure gauge mounted on the surface of the drying chamber body, a control switch mounted at the lower end of the pressure gauge, a control panel on the left side of the pressure gauge, a sealed door installed in the middle of the drying chamber body, a handle mounted on the surface of the sealed door, an exhaust pipe mounted on the side surface of the drying chamber body, an exhaust pump connected to the left side of the exhaust pipe, and a motor mounted on the left side of the exhaust pump.

[0007] Preferably, an adjustment knob is installed at the lower end of the control panel, and several indicator lights are installed at the lower end of the adjustment knob.

[0008] Preferably, a movable shaft is inserted inside the sealed door, and the movable shaft is actively embedded inside the drying chamber, while heat-resistant glass is installed in the middle of the sealed door.

[0009] Preferably, the inner surface of the drying chamber is fitted with a heat insulation layer, and a steel plate is installed on the surface of the heat insulation layer, with a sharp corner at the bottom of the steel plate.

[0010] Preferably, a collection box is provided at the lower end of the steel plate, and a pull handle is installed on the surface of the collection box, while a support column is installed on the surface of the collection box.

[0011] Preferably, a bearing plate is installed at the upper end of the support column.

[0012] Preferably, the lower end of the hot blowing mechanism is provided with a heat transfer port.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Compared with other vacuum drying ovens, this device has heat-resistant glass installed on the surface of its closed plate. The transparent design of the heat-resistant glass allows for observation of the drying status of the items inside and adjustment of the drying time. In addition, the air supply mechanism installed at the top of the device, combined with the heating internal resistance, can transfer heat to the interior of the drying oven as much as possible, and the air force pushes the heat to distribute it as evenly as possible.

[0015] 2. In addition, considering that some items with high moisture content produce a lot of water vapor during vacuum drying, which often comes into contact with the internal surface and produces surface water mist, the device is designed to prevent corrosion of the internal parts of the device over time, thus reducing its lifespan. Therefore, a heat insulation layer is installed on the internal surface, and a steel plate is installed on the surface of the heat insulation layer. The sharp corners at the bottom of the steel plate, combined with the collection box at the bottom of the drying chamber, can collect most of the water mist generated. Attached Figure Description

[0016] Figure 1 This is a front overview view of the present utility model;

[0017] Figure 2 This is an internal view from the right side of this utility model;

[0018] Figure 3 This is a top-down view of the interior of this utility model.

[0019] In the diagram: 1. Drying chamber; 2. Pressure gauge; 3. Heat-blowing mechanism; 4. Heat-resistant glass; 5. Extraction pipe; 6. Motor; 7. Handle; 8. Sealed door; 9. Insulation layer; 10. Internal opening; 11. Steel plate; 12. Movable shaft; 13. Support plate; 14. Support column; 15. Collection box; 16. Heat transfer port. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution:

[0022] Figure 1 This is a front overview view of the device. The main body is a drying chamber 1. A hot blowing mechanism 3 is installed at the upper end of the drying chamber 1, and a pressure gauge 2 is mounted on the surface of the drying chamber 1. The inside of the pressure gauge 2 is connected to the exhaust port of the drying chamber 1. The internal pressure value is measured by the connection of the exhaust port. A control switch is mounted at the lower end of the pressure gauge 2. A control panel is located on the left side of the pressure gauge 2. A sealed door 8 is installed in the middle of the drying chamber 1, and a handle 7 is installed on the surface of the sealed door 8. An exhaust pipe 5 is mounted on the side surface of the drying chamber 1, and an exhaust pump is connected to the left side of the exhaust pipe 5. A motor 6 is installed on the left side of the exhaust pump. The exhaust pump is used to evacuate the inside to provide a vacuum environment.

[0023] Figure 2This is an internal view from the right side of the device. The main body is the control panel, with adjustment knobs installed at the bottom. These knobs, combined with the control panel design, control the side suction pump and the upper heat blowing mechanism 3, ensuring unified operation of the device. Several indicator lights are installed below the adjustment knobs to display the internal parameters. A movable shaft 12 is inserted inside the sealed door 8, allowing the door to rotate. A heat-resistant colloid is provided around the edge of the sealed door 8 to ensure effective sealing when opening and closing. The movable shaft 12 is actively embedded inside the drying chamber 1. A heat-resistant glass 4 is installed in the middle of the sealed door 8, allowing the user to easily observe the real-time condition of the items being dried and conveniently adjust the internal temperature. The drying chamber 1... The inner surface is fitted with a heat insulation layer 9, and a steel plate 11 is installed on the surface of the heat insulation layer 9. At the same time, a sharp corner is provided at the bottom of the steel plate 11, and a collection box 15 is provided at the lower end of the steel plate 11. When the internal heat dissipates and heat exchange occurs when the items to be dried need to be dried, a large amount of water vapor is easily generated. Water vapor is easy to form water droplets when in contact with a surface with a slightly lower temperature. Long-term water droplets will inevitably corrode the internal parts and reduce the life of the device. The design of the metal plate allows most of the water vapor to adhere to its surface, forming water droplets that slide down from the bottom sharp corner to the collection box 15. After drying is completed, the device can be directly removed, which can reduce the corrosive effect of water droplets on internal parts. A pull handle is installed on the surface of the collection box 15, and a support column 14 is installed on the surface of the collection box 15. A bearing plate 13 is installed on the upper end of the support column 14.

[0024] Figure 3 This is a top-down internal view of the device. The main body is the heat blowing mechanism 3. The heat blowing mechanism 3 has a heat transfer port 16 at its lower end. The heat blowing mechanism 3 has several heat-dissipating resistance wires inside, which generate a large amount of heat by converting electrical energy into heat energy. Small fans are provided on both sides to transport the internal heat downwards and blow the heat into the drying chamber 1. The internal airflow can make the heat distribution more even. An internal port 10 is installed on the left side of its internal surface for connecting the air extraction pipe 5 to the inside. The exhaust port on the right side is used for measuring the air pressure gauge 2 and for the subsequent discharge of internal airflow.

[0025] In actual use, first open the sealed door 8, place the collection box 15 along the pointed corner, place the item to be dried on the upper end of the support plate 13, close the sealed door 8, turn on the control switch, and use the control panel to operate the vacuum pump to evacuate the inside. As the inside creates a vacuum environment, turn on the heat blowing mechanism 3, turn the adjustment knob to control the appropriate temperature, and as the temperature is transferred from the heat transfer port 16 to the inside, the built-in items will be dried. After completion, open the sealed door 8, take out the collection box 15, and deal with the subsequent water droplets and gas trapped inside.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum drying oven, comprising a drying chamber body (1), wherein a hot blowing mechanism (3) is installed at the upper end of the drying chamber body (1), and a pressure gauge (2) is mounted on the surface of the drying chamber body (1), and a control switch is mounted at the lower end of the pressure gauge (2), characterized in that: The pressure gauge (2) has a control panel on its left side and a sealed door (8) is installed in the middle of the drying chamber (1). A handle (7) is installed on the surface of the sealed door (8). An exhaust pipe (5) is installed on the side surface of the drying chamber (1), and an exhaust pump is connected to the left side of the exhaust pipe (5). A motor (6) is installed on the left side of the exhaust pump.

2. The vacuum drying oven according to claim 1, characterized in that: An adjustment knob is installed at the lower end of the control panel, and several indicator lights are installed at the lower end of the adjustment knob.

3. A vacuum drying oven according to claim 2, characterized in that: A movable shaft (12) is inserted inside the sealed door (8), and the movable shaft (12) is actively embedded inside the drying chamber (1). At the same time, heat-resistant glass (4) is installed in the middle of the sealed door (8).

4. A vacuum drying oven according to claim 3, characterized in that: The inner surface of the drying chamber (1) is fitted with a heat insulation layer (9), and a steel plate (11) is installed on the surface of the heat insulation layer (9), with a sharp corner at the bottom of the steel plate (11).

5. A vacuum drying oven according to claim 4, characterized in that: The lower end of the steel plate (11) is provided with a collection box (15), and a pull handle is installed on the surface of the collection box (15), while a support column (14) is installed on the surface of the collection box (15).

6. A vacuum drying oven according to claim 5, characterized in that: The upper end of the support column (14) is equipped with a bearing plate (13).

7. A vacuum drying oven according to claim 6, characterized in that: The lower end of the heat blowing mechanism (3) is provided with a heat transfer port (16).

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