A flat plate type vacuum drying oven

Abstract

The utility model belongs to drying box technical field especially is a kind of flat plate vacuum drying oven, including cabinet, the outer wall one side upper portion of cabinet is fixedly connected with explosion -proof control box, the outer wall one side middle part of cabinet is equipped with emptying valve, the inner wall of cabinet is equipped with heating flat plate.The utility model discloses by being placed into the cabinet of material loading baking tray, start controller to set temperature in the cabinet, open vacuum pump to carry out vacuumizing in the cabinet, make it reach required value, then close vacuum pump, heat in the cabinet to make it temperature rise, steam or hot water is passed into heating flat plate, make baking tray heat to required drying temperature, when the temperature in the cabinet gradually rises, air pressure reduces, water in material starts to vaporize, when the cabinet reaches set temperature, enter constant temperature state, after material drying, close heating, to realize the advantages that drying article speed is fast, pollution is small and will not make the inner quality of drying article cause the damage of advantage.

Description

Technical Field

[0001] This utility model relates to the field of drying oven technology, specifically a flat-plate vacuum drying oven. Background Technology

[0002] Vacuum drying involves heating and drying the material under vacuum conditions. A vacuum pump is used to remove air and moisture, creating a vacuum within the drying chamber. This lowers the boiling point of water, accelerates the drying process, and achieves high drying efficiency at lower temperatures. Heat is fully utilized, and no impurities are introduced during the drying process. Common vacuum drying ovens use electric heating elements. A tray containing the material to be dried is placed on a heating plate, the door is closed, and a vacuum pump creates a vacuum inside the oven. Using heating elements with drying tubes is less effective; the temperature rises and falls rapidly, damaging the material's properties. Furthermore, the heating is uneven, and temperature control is inconvenient. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a flat-plate vacuum drying oven, which solves the problems of current vacuum drying ovens that use electric heating tubes for heating, place a tray containing the medicine to be dried on a heating plate, close the oven door, and use a vacuum pump to create a vacuum inside the oven. The heating effect of using drying tubes is not good, the temperature rises and falls quickly, damaging the properties of the materials, and the heating is uneven and temperature control is inconvenient.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flat-plate vacuum drying oven, comprising a box body, an explosion-proof control box fixedly connected to the upper part of one side of the outer wall of the box body, a vent valve installed in the middle of one side of the outer wall of the box body, a heating plate installed on the inner wall of the box body, a drying tray provided on the upper surface of the heating plate, a hot water inlet / outlet main pipe installed on one side of the box body, a flat hot water inlet / outlet pipe fixedly connected to the outer wall of the hot water inlet / outlet main pipe, the flat hot water inlet / outlet pipe being connected to the heating plate, and a vacuum pump fixedly connected to the lower inner surface of the box body.

[0005] As a preferred embodiment of this utility model, a hinge is installed on one side of the opening of the box, and a sealing door is installed on the hinge, with the inner side of the sealing door fitting against the opening of the box.

[0006] As a preferred embodiment of this utility model, a drain outlet is installed on the lower part of one side of the outer wall of the box.

[0007] As a preferred embodiment of this utility model, an air extraction port is provided on the upper part of one side of the box.

[0008] As a preferred embodiment of this invention, a viewing mirror is installed on the upper surface of the sealed door.

[0009] As a preferred embodiment of this utility model, the inner wall of the outer shell of the box is provided with a heat insulation board.

[0010] Compared with the prior art, the present invention provides a flat-plate vacuum drying oven, which has the following advantages: This type of flat-plate vacuum drying oven works by placing a drying tray containing materials into the oven, activating the controller to set the temperature inside the oven, turning on the vacuum pump to evacuate the oven to the desired value, then turning off the vacuum pump and heating the oven to raise the temperature. Steam or hot water is introduced into the heating plate to heat the drying tray to the required drying temperature. As the temperature inside the oven gradually increases and the air pressure decreases, the moisture in the material begins to vaporize. When the set temperature is reached, the oven enters a constant temperature state. After the material is dried, the heating is turned off. This achieves the advantages of fast drying speed, low pollution, and no damage to the internal quality of the dried items. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the internal structure of this utility model; Figure 2 This is a front view of the present utility model; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention.

[0012] In the diagram: 1. Sight glass; 2. Explosion-proof control box; 3. Hinge; 4. Vent valve; 5. Drain outlet; 6. Hot water inlet / outlet main pipe; 7. Flat hot water inlet / outlet pipe; 8. Heating plate; 9. Drying tray; 10. Air extraction port; 11. Insulation board; 12. Cabinet body; 13. Vacuum pump; 14. Sealed door. Detailed Implementation

[0013] 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.

[0014] Example 1 Please see Figure 1-4In this embodiment: a flat vacuum drying oven includes a box body 12, an explosion-proof control box 2 is fixedly connected to the upper part of one side of the outer wall of the box body 12, an vent valve 4 is installed in the middle of one side of the outer wall of the box body 12, a heating plate 8 is installed on the inner wall of the box body 12, a drying tray 9 is provided on the upper surface of the heating plate 8, a hot water inlet and outlet main pipe 6 is installed on one side of the box body 12, a flat hot water inlet and outlet pipe 7 is fixedly connected to the outer wall of the hot water inlet and outlet main pipe 6, the flat hot water inlet and outlet pipe 7 is connected to the heating plate 8, and a vacuum pump 13 is fixedly connected to the lower inner surface of the box body 12. In this embodiment, the drying tray 9 containing the material is placed inside the chamber 12, and then the sealing door 14 is closed. The required operating temperature parameters are set through the explosion-proof control box 2. Then, the vacuum pump 13 is turned on at the appropriate time, the vacuum valve is opened, and the chamber 12 begins to be evacuated. When the vacuum level inside the chamber 12 reaches the required value, the vacuum valve is closed, the power to the vacuum pump 13 is turned off, and the heating start button is activated. The chamber 12 enters the heating state, and steam or hot water is introduced into the heating plate 8 to heat to the required drying temperature. When the chamber 12... As the internal temperature gradually increases and the air pressure decreases, the moisture in the material begins to vaporize. When the set temperature is reached inside the chamber 12, it enters a constant temperature state. After the material is dried, the heating is turned off, and then the vent valve 4 is opened, the solvent discharge valve of the storage tank is opened, and all the solution is discharged. After the vacuum gauge pointer returns to the "0" position, the vacuum dryer sealing door 14 is opened, and the dried material is taken out. The inner liner and outer shell of the chamber 12 are made of stainless steel plates, and the insulation board 11 between the inner liner and the outer shell is made of high-quality aluminum silicate fiber cotton for insulation, which has good insulation performance.

[0015] Preferably, a hinge 3 is installed on one side of the opening of the box 12, and a sealing door 14 is installed on the hinge 3. The inner side of the sealing door 14 fits against the opening of the box 12; a drain port 5 is installed on the lower part of one side of the outer wall of the box 12; an air extraction port 10 is provided on the upper part of one side of the box 12; a viewing mirror 1 is installed on the upper surface of the sealing door 14; and an insulation board 11 is provided on the inner wall of the outer shell of the box 12. Among them, the viewing mirror 1 allows for real-time monitoring of the material's condition at each stage.

[0016] The working principle and usage process of this utility model are as follows: The drying tray 9 containing the material is placed inside the chamber 12, and then the sealing door 14 is closed. The required temperature parameters are set through the explosion-proof control box 2. Then, the vacuum pump 13 is turned on at the appropriate time, and the vacuum valve is opened. Vacuuming begins inside the chamber 12. When the vacuum level inside the chamber 12 reaches the required value, the vacuum valve is closed, and the power to the vacuum pump 13 is turned off. The heating start button is activated, and the chamber 12 enters a heating state. Steam or hot water is introduced into the heating plate 8 to heat to the required drying temperature. As the temperature inside the chamber 12 gradually increases and the air pressure decreases, the moisture in the material begins to vaporize. When the set temperature is reached inside the chamber 12, it enters a constant temperature state. After the material is dried, the heating is turned off, and then the venting valve 4 is opened, and the solvent discharge valve of the storage tank is opened to drain all the solution. After the vacuum gauge pointer returns to the "0" position, the sealing door 14 of the vacuum dryer is opened, and the dried material is removed.

[0017] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flat-bed vacuum drying oven comprising an oven housing (12), characterised in that: An explosion-proof control box (2) is fixedly connected to the upper part of one side of the outer wall of the box (12). A vent valve (4) is installed in the middle of one side of the outer wall of the box (12). A heating plate (8) is installed on the inner wall of the box (12). A baking tray (9) is provided on the upper surface of the heating plate (8). A hot water inlet and outlet main pipe (6) is installed on one side of the box (12). A flat hot water inlet and outlet pipe (7) is fixedly connected to the outer wall of the hot water inlet and outlet main pipe (6). The flat hot water inlet and outlet pipe (7) is connected to the heating plate (8). A vacuum pump (13) is fixedly connected to the lower inner surface of the box (12).

2. The flat-plate vacuum drying oven according to claim 1, characterized in that: A hinge (3) is installed on one side of the opening of the box (12), and a sealing door (14) is installed on the hinge (3). The inner side of the sealing door (14) is in contact with the opening of the box (12).

3. A flat-plate vacuum drying oven according to claim 1, characterized in that: A drain outlet (5) is installed on the lower part of one side of the outer wall of the box (12).

4. A flat-plate vacuum drying oven according to claim 1, characterized in that: An air extraction port (10) is provided on the upper side of the box (12).

5. A flat-plate vacuum drying oven according to claim 2, characterized in that: A viewing mirror (1) is installed on the upper surface of the sealed door (14).

6. A flat-plate vacuum drying oven according to claim 1, characterized in that: The inner wall of the outer shell of the box (12) is provided with a heat insulation board (11).

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