Vacuum drying oven

Abstract

The utility model discloses a vacuum drying oven which comprises a drying oven main body, an oven door, a deflation valve and an air hole, a rubber door sealing ring is fixed on the outer surface of the drying oven main body on the side edge of the oven door in a gluing mode, a dustproof assembly is arranged on the outer side of the deflation valve in a covering mode, and two aluminum shelves are arranged in the drying oven main body. Fixing assemblies are arranged on the upper side and the lower side of the two ends of each aluminum shelf; according to the utility model, the top of each aluminum shelf is provided with the movable limiting screen plate, and after a container filled with granular articles is placed on the aluminum shelf, the limiting screen plates move downwards to cover the aluminum shelf, so that the container filled with the granular articles can be fixed, and the internal granular articles are prevented from being pumped out of the container during vacuumizing; and the dust screen cover on the outer side of the air release valve prevents impurities such as dust from being brought into the air release valve in the pressure reduction process when air enters the drying box main body during air release, and the drying box is further maintained.

Description

Technical Field

[0001] This utility model relates to the field of vacuum drying oven technology, and in particular to 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 employ an intelligent digital temperature controller for temperature setting, display, and control. They are particularly suitable for the rapid and efficient drying of heat-sensitive, easily decomposed, easily oxidized substances and complex components. They are widely used in research and application fields such as biochemistry, chemical pharmaceuticals, medical and health care, agricultural research, and environmental protection, for powder drying, baking, and the sterilization and disinfection of various glass containers.

[0003] When using a vacuum drying oven, if the dried items are transformed into small, lightweight particles, a barrier screen should be added to the vacuum port in the working chamber to prevent the dried items from being sucked in and damaging the vacuum pump. Although this can prevent the particles from being drawn into the vacuum port, small particles will still be sucked in and fall into the drying oven, increasing the difficulty of cleaning the drying oven after use. Therefore, we propose a vacuum drying oven. Utility Model Content

[0004] The problem this invention aims to solve is the poor quality of plastic film pulverization in existing vacuum drying ovens.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vacuum drying oven, which includes a drying oven body, a door, a vent valve and an air hole. A rubber door seal ring is glued and fixed to the outer surface of the drying oven body on the side of the door. A dustproof component is provided on the outer side of the vent valve. Two aluminum shelves are provided inside the drying oven body. Each aluminum shelf is provided with fixing components on the upper and lower sides at both ends.

[0006] The fixing assembly includes a fixing side plate, a limiting mesh plate, and sliding rods. Each aluminum shelf has a fixing side plate at the bottom of both sides. The fixing side plates are fixed to the inner wall of the drying oven body by bolts. Each aluminum shelf has a limiting mesh plate on its top surface. Several sliding rods are equidistantly slidably sleeved on both sides of the two limiting mesh plates. One end of each sliding rod that extends to the bottom of the limiting mesh plate is fixedly connected to the fixing side plate.

[0007] In a preferred embodiment of the vacuum drying oven of this utility model, a fixing screw tube is fixed on the outer surface of the drying oven body outside the vent valve. A connecting screw tube is threaded inside the fixing screw tube. A dustproof mesh cover is fixed at one end of the connecting screw tube extending to the outside of the fixing screw tube. A rotating connecting rod is rotatably connected at the center position of the end of the dustproof mesh cover away from the fixing screw tube. An insert rod is fixed at the end of the rotating connecting rod near the vent valve. The insert rod is inserted into a rectangular groove at the end of the vent valve.

[0008] In a preferred embodiment of the vacuum drying oven of this utility model, the fixing component further includes a limiting plate. Each pair of two fixing side plates are slidably fitted with a limiting plate on opposite sides. The top of each limiting plate is fixed to the bottom surface of the aluminum shelf. The limiting plate is configured as an L-shape to cooperate with the fixing side plate.

[0009] In a preferred embodiment of the vacuum drying oven of this utility model, the fixing assembly further includes a sliding pad and a spring. Each sliding rod on the top surface of the limiting mesh plate is slidably fitted with a sliding pad, and each sliding rod on the top surface of the sliding pad is fitted with a spring. Both ends of each spring are respectively fixed to the sliding rod and the sliding pad.

[0010] In a preferred embodiment of the vacuum drying oven described in this utility model, each of the limiting mesh plates has sliding holes for sliding rod cooperation on both sides and inside the fixed side plate, the diameter of the sliding pad is larger than the diameter of the sliding hole, and a handle is fixed in the middle of the top surface of the limiting mesh plate.

[0011] In a preferred embodiment of the vacuum drying oven of this utility model, each of the slide rods is fixed with a fixing screw at one end that extends to the bottom of the limiting mesh plate, and several fixing cylinders are fixed at equal intervals on the top and bottom surfaces of the two fixing side plates, with each fixing screw threaded inside the fixing cylinder.

[0012] In a preferred embodiment of the vacuum drying oven described in this utility model, the rotating connecting rod is configured as an H-shape that cooperates with the end of the dustproof mesh cover, a knob is fixed at one end of the rotating connecting rod extending to the outside of the dustproof mesh cover, and the insert rod is a rectangular column that cooperates with the rectangular groove.

[0013] The beneficial effects of this utility model are as follows: By setting a movable limiting mesh plate on the top of each aluminum shelf, after a container containing granular items is placed on the aluminum shelf, the limiting mesh plate moves down and covers the shelf, which can fix the container containing granular items and prevent the granular items inside from being extracted from the container during vacuuming. This facilitates cleaning of the inside of the drying oven. In addition, the dustproof mesh cover on the outside of the vent valve prevents dust and other impurities from being brought into the vent valve during the decompression process when the gas enters the drying oven, thus further maintaining the drying oven. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a structural diagram of a vacuum drying oven.

[0016] Figure 2 This is a structural diagram of a vacuum drying oven after the dust cover has been removed.

[0017] Figure 3 This is a structural diagram of the fixed components of a vacuum drying oven.

[0018] Figure 4 Another view of the fixed components of a vacuum drying oven.

[0019] Figure 5 This is an exploded view of the dustproof component structure of a vacuum drying oven.

[0020] Legend: 1. Drying oven body; 2. Oven door; 3. Vent valve; 4. Air vent; 5. Rubber door seal; 6. Aluminum shelf; 7. Fixing components; 71. Fixing side plate; 72. Limiting plate; 73. Limiting mesh plate; 74. Sliding rod; 75. Sliding pad; 76. Spring; 77. Fixing screw; 78. Fixing screw barrel; 79. Handle; 8. Dustproof components; 81. Fixing screw tube; 82. Connecting screw tube; 83. Dustproof mesh cover; 84. Rotating connecting rod; 85. Knob; 86. Insert rod. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1-5 This embodiment is a vacuum drying oven, including a drying oven body 1, a door 2, a vent valve 3 and an air hole 4. A rubber door seal ring 5 is glued to the outer surface of the drying oven body 1 on the side of the door 2. A dustproof component 8 is provided on the outside of the vent valve 3. Two aluminum shelves 6 are provided inside the drying oven body 1. Each aluminum shelf 6 is provided with a fixing component 7 on both the upper and lower sides.

[0023] The fixing component 7 includes a fixing side plate 71, a limiting mesh plate 73, and sliding rods 74. Each aluminum shelf 6 has a fixing side plate 71 at the bottom of both sides. The fixing side plates 71 are fixed to the inner wall of the drying oven body 1 by bolts. Each aluminum shelf 6 has a limiting mesh plate 73 on its top surface. Several sliding rods 74 are equidistantly slidably sleeved on both sides of the two limiting mesh plates 73. The end of each sliding rod 74 that extends through to the bottom of the limiting mesh plate 73 is fixedly connected to the fixing side plate 71. After the container containing granular items is placed on the aluminum shelf 6, the limiting mesh plate 73 moves down to cover the top surface of the container, preventing the granular items inside from being sucked out during the vacuuming process.

[0024] In this embodiment, a fixing screw tube 81 is fixed on the outer surface of the drying chamber body 1 outside the vent valve 3. A connecting screw tube 82 is threaded inside the fixing screw tube 81. A dustproof mesh cover 83 is fixed at one end of the connecting screw tube 82 extending to the outside of the fixing screw tube 81. A rotating connecting rod 84 is rotatably connected at the center of the end of the dustproof mesh cover 83 away from the fixing screw tube 81. An insert rod 86 is fixed at the end of the rotating connecting rod 84 near the vent valve 3. The insert rod 86 is inserted into the rectangular groove at the end of the vent valve 3. When the chamber door 2 needs to be opened after drying is completed, the vent valve 3 needs to be opened first to release the pressure inside the drying chamber body 1. During pressure release, it is prevented that the airflow will bring dust and debris into the air hole 4 and cause blockage. The detachable design of the dustproof mesh cover 83 makes it convenient to disassemble and clean it separately.

[0025] In this embodiment, the fixing component 7 also includes a limiting plate 72. Each pair of two fixing side plates 71 are slidably fitted with a limiting plate 72 on opposite sides. The top of the limiting plate 72 is fixed to the bottom surface of the aluminum shelf 6. The limiting plate 72 is set to an L-shape to cooperate with the fixing side plate 71. When the aluminum shelf 6 is placed on the top surface of the fixing side plate 71, the limiting plate 72 is engaged with the bottom surface of the fixing side plate 71 to limit the aluminum shelf 6, so that the aluminum shelf 6 can be stably inserted into the body 1 of the drying oven.

[0026] In this embodiment, the fixing component 7 further includes a sliding pad 75 and a spring 76. Each sliding rod 74 on the top surface of the limiting mesh plate 73 is slidably fitted with a sliding pad 75, and each sliding rod 74 on the top surface of the sliding pad 75 is fitted with a spring 76. Both ends of each spring 76 are fixed to the sliding rod 74 and the sliding pad 75, respectively. When the limiting mesh plate 73 covers the top surface of the container containing granular items, the spring 76 can push the limiting mesh plate 73 to press firmly against the top surface of the container, ensuring the stability of the limiting mesh plate 73 during air extraction.

[0027] In this embodiment, each limiting mesh plate 73 has sliding holes on both sides and inside the fixed side plate 71 for cooperation with the sliding rod 74. The diameter of the sliding pad 75 is larger than the diameter of the sliding hole, which facilitates the sliding of the limiting mesh plate 73 on the sliding rod 74 and also facilitates the insertion of the limiting mesh plate 73 into the fixed side plate 71 and the screwing of the fixing screw 77 into the fixing screw cylinder 78. A handle 79 is fixed in the middle of the top surface of the limiting mesh plate 73, which makes it easy to pull the limiting mesh plate 73 upward.

[0028] In this embodiment, each slide rod 74 is fixed with a fixing screw 77 at one end that extends to the bottom of the limiting mesh plate 73. Several fixing cylinders 78 are fixed at equal intervals on the top and bottom surfaces of the two fixing side plates 71. Each fixing screw 77 is threaded inside the fixing cylinder 78. When the limiting mesh plate 73 becomes dirty, the slide rod 74 is turned to unscrew the fixing screw 77 from the fixing cylinder 78, so that the limiting mesh plate 73 can be removed for cleaning.

[0029] In this embodiment, the rotating connecting rod 84 is configured as an H-shape that cooperates with the end of the dustproof mesh cover 83. A knob 85 is fixed at one end of the rotating connecting rod 84 that extends to the outside of the dustproof mesh cover 83. The insert rod 86 is a rectangular column that cooperates with the rectangular groove, so that the knob 85 can drive the vent valve 3 to rotate.

[0030] Working principle: When the drying oven needs to be used, open the oven door 2, pull the aluminum shelf 6, place the container containing granular items on the top surface of the aluminum shelf 6, then hold the handle 79 and pull the limiting mesh plate 73 upwards, causing the limiting mesh plate 73 to drive the sliding pad 75 to slide upwards on the slide rod 74. During sliding, the spring 76 is compressed, pushing the aluminum shelf 6 and pushing the container containing granular items into the drying oven body 1. At this time, slowly release the handle 79, so that the limiting mesh plate 73, pushed by the spring 76, abuts against the top surface of the container containing granular items. Then close the oven door 2 and open the drying oven body 1 for drying. After drying is completed, turn the knob 85 to open the vent valve 3 to release pressure. During pressure release, the airflow passes through the dustproof mesh cover 83 and enters the vent valve 3 through the air hole 4. After pressure release is completed, open the oven door 2, hold the handle 79 and pull the limiting mesh plate 73 upwards, then pull the aluminum shelf 6. After the aluminum shelf 6 is pulled out, release the limiting mesh plate 73. 3. The limiting mesh plate 73, pushed by the spring 76, abuts against the rear top surface of the aluminum shelf 6. Then, remove the container containing the dried granular material from the aluminum shelf 6. When cleaning the limiting mesh plate 73, screw the sliding rods 74 one by one to unscrew the fixing screws 77 from the fixing screws 78, and then remove the sliding rods 74 from inside the limiting mesh plate 73. The limiting mesh plate 73 can then be removed from the drying oven body 1. After cleaning, insert the sliding rods 74 one by one into the limiting mesh plate 73. 3. Inside, the sliding pad 75 abuts against the top surface of the slide rod 74. Then, the limiting mesh plate 73 is passed through the limiting mesh plate 73 and the aluminum shelf 6 and screwed into the fixing screw cylinder 78 for fixation. When disassembling the dustproof mesh cover 83, the dustproof mesh cover 83 is screwed to separate the connecting screw tube 82 from the fixing screw tube 81, and at the same time, the insertion rod 86 is moved out of the rectangular groove. After the dustproof mesh cover 83 is cleaned, the connecting screw tube 82 is screwed into the fixing screw tube 81 for fixation, and at the same time, the insertion rod 86 is inserted into the rectangular groove.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vacuum drying oven, characterized by: Including dry box main part (1), box door (2), air release valve (3) and air hole (4), the outer surface of the dry box main part (1) of the side edge of the box door (2) is glued and fixed with rubber door seal ring (5), the outer side of the air release valve (3) is covered with dustproof assembly (8), the inside of the dry box main part (1) is provided with two aluminum shelves (6), the upper and lower sides of both ends of each aluminum shelf (6) are provided with fixing assembly (7); The fixing assembly (7) includes fixed side plate (71), limiting net plate (73) and slide rod (74), the bottom of each aluminum shelf (6) is provided with fixed side plate (71) on both sides, the fixed side plate (71) is fixed on the inner wall of the dry box main part (1) by bolts, the top surface of each aluminum shelf (6) is provided with limiting net plate (73), a plurality of slide rods (74) are slidably connected on both sides of the limiting net plate (73) at equal intervals, and one end of each slide rod (74) penetrating through the limiting net plate (73) is fixedly connected with the fixed side plate (71).

2. A vacuum drying oven as claimed in claim 1, characterized in that: The outer surface of the dry box main part (1) outside the outer side of the air release valve (3) is fixed with fixed screw pipe (81), the inside of the fixed screw pipe (81) is threadedly connected with connecting screw pipe (82), one end of the connecting screw pipe (82) extending to the outside of the fixed screw pipe (81) is fixed with dustproof mesh cover (83), the dustproof mesh cover (83) is rotatably connected with rotating connecting rod (84) at the center position of the end away from the fixed screw pipe (81), the end of the rotating connecting rod (84) close to the air release valve (3) is fixed with plug rod (86), and the plug rod (86) is inserted into the rectangular slot formed in the end of the air release valve (3).

3. A vacuum drying oven as claimed in claim 1, characterized in that: The fixing assembly (7) further includes limiting clamping plate (72), each group of two fixed side plates (71) are slidably connected with limiting clamping plate (72) on the opposite sides, the limiting clamping plate (72) is fixed on the bottom surface of the aluminum shelf (6), and the limiting clamping plate (72) is arranged in an L shape matched with the fixed side plate (71).

4. A vacuum drying oven as claimed in claim 1, characterized in that: The fixing assembly (7) further includes sliding pad plate (75) and spring (76), the sliding pad plate (75) is slidably connected on each slide rod (74) on the top surface of the limiting net plate (73), the spring (76) is sleeved on the slide rod (74) on the top surface of the sliding pad plate (75), and the two ends of each spring (76) are fixed on the slide rod (74) and the sliding pad plate (75) respectively.

5. A vacuum drying oven as claimed in claim 4, characterized in that: The limiting net plate (73) is provided with a sliding hole matched with the slide rod (74) on both sides and in the fixed side plate (71), the diameter of the sliding pad plate (75) is greater than the diameter of the sliding hole, and the top surface of the limiting net plate (73) is fixed with handle (79).

6. A vacuum drying oven as claimed in claim 4, characterized in that: The end of each slide rod (74) penetrating through the bottom of the limiting net plate (73) is fixed with fixed screw rod (77), and a plurality of fixed screw cylinders (78) are fixed on the top surface of the fixed side plate (71) at equal intervals.

7. A vacuum drying oven as claimed in claim 2, wherein: The rotating connecting rod (84) is arranged in H type matched with the end of the dust screen cover (83), one end of the rotating connecting rod (84) extending to the outside of the dust screen cover (83) is fixed with a knob (85), and the inserting rod (86) is a rectangular column matched with the rectangular slot.

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