Vacuum drying oven convenient to drain water

Abstract

The utility model discloses a vacuum drying box convenient for drainage, which comprises a vacuum box body, a vacuum pumping opening, a closed box door, an electric heating plate and a liquid collecting and discharging device, the closed box door is provided with a glass observation window, a water scraping device, a driving assembly and a mounting frame, and the mounting frame is arranged in the vertical direction. The water scraping device is connected to the driving assembly, the driving assembly drives the fixing block to move in the vertical direction to remove condensed water of the glass display window, the condensed water flows to the bottom of the vacuum box body and enters the recycling box, and the situation that liquefied liquid affects equipment use and drying efficiency is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drying boxes, in particular to a vacuum drying box which is convenient for drainage. Background Art

[0002] The vacuum drying oven is a processing equipment commonly used in the food and pharmaceutical industries for drying raw materials. The vacuum drying environment has the advantages of lowering the boiling point of the liquid and shortening the drying time. In addition, for some easily oxidized materials, the vacuum drying environment is conducive to protecting the materials and avoiding the influence of oxygen on the materials.

[0003] Common vacuum drying equipment in the prior art includes a heating plate and a transparent sealed door. A glass window is generally provided inside the sealed door to facilitate observation of the drying of the internal materials. Drying in a vacuum environment will also produce a large amount of water vapor. When filled with air, the water vapor will liquefy and adhere to the inner wall of the box. Since the heating plate cannot generally be set inside the glass window, and the water vapor easily condenses on the surface with a lower temperature, there will be a large number of water droplets on the inner wall of the sealed door of the drying box, which interferes with the observation of the material. The presence of a large number of water droplets will also seriously affect the continuous drying use and the service life of the metal parts inside the sealed box. During the drying process of certain materials with high humidity, there will often be a lot of liquid accumulation at the bottom of the drying box, which will also affect the drying efficiency. It is necessary to remove the moisture in the vacuum box after venting. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a vacuum drying box with reasonable design and convenient drainage in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vacuum drying box for convenient drainage, characterized in that it includes a vacuum box body, a vacuum extraction port, a sealed box door, an electric heating plate, and a liquid collecting and discharging device. The sealed box door includes a glass observation window, and is also provided with a mounting frame, a wiper device, and a driving component. The mounting frame is arranged to be installed in a vertical direction, and the mounting frame is arranged at one end of the glass observation window inside the vacuum drying box. The mounting frame is provided with a wiper device for the glass observation window in a horizontal direction and a driving component for driving the wiper device. The wiper device is connected to the driving component. The wiper device is provided with a fixed block, a rotating shaft, and a scraper. The fixed block is arranged on the driving component, and the scraper is arranged on the fixed block. The liquid collecting and discharging device is arranged on the bottom surface of the vacuum box body. The liquid collecting and discharging device includes a recovery box and a sealed cover for the recovery box. The side of the vacuum box body is provided with an installation slot corresponding to the recovery box, and the sealed cover of the recovery box is provided with a sealed pad, a support column, and the support rod is connected to a hydraulic rod, and the hydraulic rod is connected to a sliding column. The sliding column is opened on the side wall of the vacuum box.

[0007] As a preferred solution of the vacuum drying box with convenient drainage described in the utility model, the driving assembly includes a motor, the motor is connected to a screw rod, the screw rod is connected to a ball nut, and the ball nut is connected to the fixed block.

[0008] As a preferred solution of the vacuum drying box with convenient drainage described in the utility model, a support block is provided on the mounting frame, a gear bar is provided on the support block in the vertical direction, a gear meshing with the gear bar is provided on the rotating shaft, and the length of the gear bar is greater than the length of the glass observation window in the vertical direction.

[0009] As a preferred solution of the vacuum drying box with convenient drainage described in the utility model, corresponding tightening spring pieces are fixedly arranged between the recovery box and the inner wall of the installation slot, and a pull ring is fixedly connected to the side of the recovery box.

[0010] As a preferred solution of the vacuum drying box with convenient drainage described in the utility model, the rotating shaft is movably arranged on the fixed block, and the surface of the rotating shaft is covered with a layer of sponge.

[0011] Compared with the prior art, the vacuum drying box with convenient drainage described in the utility model has a relatively low temperature of the glass observation window during the operation of the vacuum box, and a large amount of water vapor adheres to the glass observation window to liquefy and condense. By providing a wiper assembly and a drive assembly, the wiper assembly is driven by the drive assembly to operate, and the drive assembly drives the fixed block to move and operate in a vertical direction attached to the glass observation window, so as to scrape off the condensed water and collect it in the recovery box at the bottom. By closing the sealing cover of the recovery box, the water in the recovery box can be removed without affecting the air tightness, thereby improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structural cross section of the wiper device of the utility model;

[0014] Figure 3 It is a schematic diagram of liquid collection and discharge of the utility model.

[0015] In the figure: 1-vacuum box, 2-gear bar, 3-sealed box door, 4-mounting frame, 5-scraper, 6-glass observation window, 7-recovery box sealed cover, 8-recovery box, 9-pull ring, 10-heating plate, 11-motor, 12-ball nut, 13-fixed block, 14-screw, 15-gear, 16-rotating shaft, 17-support column, 18-sliding column, 19-tightening spring, 20-vacuum extraction port, 21-installation slot, 22-sealed gasket. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0018] Reference Figure 1-3A vacuum drying oven for convenient drainage, comprising a vacuum box body 1, a vacuum extraction port 20, a sealed box door 3, an electric heating plate 10, a liquid collection and discharge device, the sealed box door comprising a glass observation window 6, a mounting frame 4, a driving component, and a wiper device, the mounting frame 4 being arranged to be installed in a vertical direction, the mounting frame being arranged at one end of the glass observation window 6 inside the vacuum drying oven, the mounting frame 4 being provided with a wiper device for a glass display window in a horizontal direction and a driving component for driving the wiper device, the wiper device being provided with a fixing block 13, a rotating The driving shaft 16, the scraper 5, the fixed block 13 is arranged on the driving component, the driving component includes a motor 11, the motor 11 is connected to a screw rod 14, the screw rod 14 is connected to a ball nut 12, the ball nut 12 is connected to the fixed block 13, the mounting frame 4 is provided with a support block, the support block is provided with a gear bar 2 in the vertical direction, the rotating shaft 16 is provided with a gear 15 meshing with the gear bar 2, and the length of the gear bar 2 is greater than the length of the glass observation window 6 in the vertical direction. The scraper 5 is arranged on the fixed block 13, and the liquid collecting and discharging device is arranged on the inner bottom surface of the vacuum box 1. The liquid collecting and discharging device includes a recovery box 8 and a recovery box sealing cover 7. The side of the vacuum box 1 is provided with an installation slot 21 corresponding to the recovery box 8, and the recovery box sealing cover 7 is provided with a sealing pad 22, a support column 17, and the support column 17 is connected to a hydraulic rod, and the hydraulic rod is connected to a sliding column 18. The sliding column 18 is provided on the side wall of the vacuum box 1, and a corresponding tightening spring piece 19 is fixedly arranged between the recovery box 8 and the inner wall of the installation slot 21, and a pull ring 9 is fixedly connected to the side of the recovery box.

[0019] When the vacuum drying oven is used, after the heating plate 10 is heated, the vacuum outlet 20 is connected to the vacuum pump, and a large amount of water vapor in the moist material in the drying oven diffuses into the interior of the vacuum box body 1. Since the glass observation window 6 is in direct contact with the air in the external low-temperature environment and the temperature is relatively low, a large amount of water vapor adheres to the glass observation window 6 and liquefies and condenses. The water liquid is hung down from the glass observation window 6 by the scraper 5, and the water liquid enters the recovery box 8. The support column 17 is lowered by the sliding column 18. After the recovery box sealing cover 7 closes the bottom of the vacuum box body 1, the liquid in the recovery box is removed without affecting the vacuum pressure, thereby improving the drying efficiency.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum drying oven that is convenient for drainage, characterized in that: The vacuum drying oven comprises a vacuum box body (1), a vacuum extraction port (20), a sealed box door (3), an electric heating plate (10), and a liquid collecting and discharging device. The sealed box door (3) comprises a glass observation window (6) and is also provided with a mounting frame (4), a wiper device, and a driving component. The mounting frame (4) is arranged to be installed in a vertical direction. The mounting frame (4) is arranged at one end of the glass observation window (6) inside the vacuum drying oven. The mounting frame (4) is provided with a wiper device for the glass observation window (6) in a horizontal direction and a driving component for driving the wiper device. The wiper device is connected to the driving component. The wiper device is provided with a fixing block (13 ), a scraper (5), a rotating shaft (16), the fixed block (13) is arranged on the driving assembly, the scraper (5) is arranged on the fixed block (13), the liquid collecting and discharging device is arranged on the inner bottom surface of the vacuum box (1), the liquid collecting and discharging device comprises a recovery box (8), a recovery box sealing cover (7), a side of the vacuum box (1) is provided with an installation slot (21) corresponding to the recovery box (8), the recovery box sealing cover (7) is provided with a sealing pad (22), a support column (17), the support column (17) is connected to a hydraulic rod, the hydraulic rod is connected to a sliding column (18), and the sliding column (18) is provided on the side wall of the vacuum box.

2. A vacuum drying oven with convenient drainage according to claim 1, characterized in that: The drive assembly comprises a motor (11), the motor (11) is connected to a screw rod (14), the screw rod (14) is connected to a ball nut (12), and the ball nut (12) is connected to the fixing block (13).

3. The vacuum drying oven with convenient drainage according to claim 1, characterized in that: A support block is provided on the mounting frame (4), a gear bar (2) is provided on the support block in a vertical direction, a gear (15) meshing with the gear bar (2) is provided on the rotating shaft (16), and the length of the gear bar (2) is greater than the length of the glass observation window (6) in the vertical direction.

4. The vacuum drying oven with convenient drainage according to claim 1, characterized in that: A corresponding tightening spring sheet (19) is fixedly arranged between the recovery box (8) and the inner wall of the installation slot (21), and a pull ring (9) is fixedly connected to the side of the recovery box (8).

5. The vacuum drying oven with convenient drainage according to claim 1, characterized in that: The rotating shaft (16) is movably arranged on the fixed block (13), and the surface of the rotating shaft (16) is covered with a layer of sponge.

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