Vacuum drying oven for organic chemical raw materials

Abstract

The utility model relates to the technical field of vacuum drying boxes, in particular to an organic chemical raw material vacuum drying box which improves sealing performance, facilitates replacement of a sealing gasket, facilitates closing of a box door, improves convenience and facilitates feeding and discharging of organic chemical raw materials. Comprising a drying mechanism; the drying device further comprises a sealing mechanism, a door closing mechanism, a closing auxiliary mechanism, a sliding mechanism and a limiting mechanism, the sealing mechanism is installed on the drying mechanism, the door closing mechanism is installed on the drying mechanism, the closing auxiliary mechanism is installed on the door closing mechanism, the sliding mechanism is installed in the drying mechanism, and the limiting mechanism is installed on the sliding mechanism. The drying mechanism facilitates vacuumizing and heating treatment, the sealing mechanism facilitates sealing of the drying mechanism, the sealing performance of the drying mechanism is improved, the closing auxiliary mechanism assists the door closing mechanism to rapidly close the drying mechanism, the sliding mechanism facilitates feeding and discharging of organic chemical raw materials, and the limiting mechanism facilitates placement of the organic chemical raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying ovens, in particular to a vacuum drying oven for organic chemical raw materials. Background Art

[0002] The vacuum drying oven uses a vacuum pump to extract air and moisture, creating a vacuum state in the working chamber, lowering the boiling point of water, and thus speeding up the drying speed. In the vacuum state, the moisture or other volatile components in the dried organic chemical raw materials will evaporate more easily and be gradually removed as the vacuum is drawn out.

[0003] Existing vacuum drying ovens, such as the prior art with application number CN201520667503.4, include a drying chamber, a box body, a box door, a braided layer, an outer rubber layer, an inner rubber layer, and a vacuum pump. By adding a braided layer made of polyester thread between the inner rubber layer and the outer rubber layer of the air pipe, the strength of the air pipe is enhanced, which is beneficial to extending the service life of the vacuum drying oven and improving the safety of use of the vacuum drying oven.

[0004] However, after being used for a long time, the sealing quality of the vacuum drying box door will be reduced, which will reduce the vacuum and affect the drying efficiency. In addition, the existing technology is relatively cumbersome to close the box door and is less convenient. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an organic chemical raw material vacuum drying box with improved sealing performance, convenient replacement of sealing gaskets and facilitation of closing the box door, improved convenience, and convenient loading and unloading of organic chemical raw materials.

[0006] The utility model discloses a vacuum drying box for organic chemical raw materials, comprising a drying mechanism; a sealing mechanism, a door-closing mechanism, a closing auxiliary mechanism, a sliding mechanism and a limiting mechanism. The sealing mechanism is installed on the drying mechanism, the door-closing mechanism is installed on the drying mechanism, the closing auxiliary mechanism is installed on the door-closing mechanism, the sliding mechanism is installed in the drying mechanism, and the limiting mechanism is installed on the sliding mechanism. The drying mechanism facilitates vacuuming and heating treatment, the sealing mechanism facilitates sealing the drying mechanism, thereby improving the sealing performance of the drying mechanism, the closing auxiliary mechanism assists the door-closing mechanism in facilitating rapid closing of the drying mechanism, the sliding mechanism facilitates loading and unloading of organic chemical raw materials, and the limiting mechanism facilitates placement of the organic chemical raw materials. The drying mechanism facilitates vacuuming and heating treatment, thereby improving the drying efficiency of the organic chemical raw materials, the sealing mechanism facilitates sealing the drying mechanism, thereby improving the sealing performance of the drying mechanism, and the sealing mechanism is easy to disassemble and replace, thereby preventing the sealing performance from being reduced and affecting the drying efficiency, the closing auxiliary mechanism assists the door-closing mechanism in facilitating rapid closing of the drying mechanism, thereby improving convenience, the sliding mechanism facilitates loading and unloading of organic chemical raw materials, thereby improving convenience, and the limiting mechanism facilitates placement of the organic chemical raw materials, thereby improving stability.

[0007] Preferably, the drying mechanism includes a drying box, a box door, an electric heating plate, a vacuum pump and a control panel. The box door is rotatably mounted on the drying box by a hinge. A partition is provided in the drying box. The electric heating plate is mounted in the drying box. The electric heating plate is located on the right side of the partition. The control panel is mounted on the drying box. The vacuum pump is mounted on the partition. After the organic chemical raw materials are placed in the drying box, the box door is closed, and then the electric heating plate is turned on for heating. At the same time, the vacuum pump is turned on to evacuate the drying box to improve the drying efficiency of the organic chemical raw materials. The whole is controlled by the control panel.

[0008] Preferably, the sealing mechanism includes a sealing mounting ring, a sealing gasket, a sealing limiting ring, a fixing bolt and a sealing extrusion frame. The sealing mounting ring is installed at the opening of the drying box, a sealing limiting ring is installed on the sealing gasket, the sealing gasket is installed on the sealing mounting ring through the sealing limiting ring, the fixing bolt is installed on the sealing mounting ring through a threaded relationship, and the sealing extrusion frame is installed on the box door; when the box door is rotated to close, the sealing is completed by the contact and extrusion of the sealing extrusion frame and the sealing gasket, thereby improving the sealing quality and drying efficiency. When installing the sealing gasket after replacement, align the sealing limiting ring with the sealing mounting ring, and then press the sealing gasket to make the sealing limiting ring change, and then insert the sealing limiting ring into the sealing mounting ring, and fix the sealing limiting ring by rotating the fixing bolt, thereby completing the replacement and fixation of the sealing gasket, effectively preventing the sealing gasket from aging and causing the sealing to be reduced.

[0009] Preferably, the door closing mechanism includes a rotating shaft, a locking plate, a through groove and a rotating circular groove. The rotating shaft is rotatably installed on the box door, the lock plate is installed at one end of the rotating shaft, the through groove is installed on the drying box, and the rotating circular groove is arranged in the side wall of the drying box, and the rotating circular groove is connected to the through groove; when the box door is fixed, the box door is rotated, the lock plate is passed through the through groove, and then enters the rotating circular groove, and then the rotating shaft is driven to rotate by rotating the closing auxiliary mechanism, and then the lock plate is driven to rotate in the rotating circular groove, thereby completing the fixation of the box door.

[0010] Preferably, the closing auxiliary mechanism includes four arc-shaped limit grooves, a rotating disk, two sliding arc-shaped blocks, two springs and a handle. A rotating chamber is provided in the box door, and four arc-shaped limit grooves are provided on the inner wall of the rotating chamber. The rotating disk is installed on the rotating shaft, and the rotating disk is rotatably installed in the rotating chamber. Two sliding grooves are provided on the rotating disk, and the two sliding arc-shaped blocks are slidably installed in the two sliding grooves. The outer ends of the two sliding arc-shaped blocks are arc surfaces, and the arc-shaped limit grooves are arc surfaces. One end of the two springs is connected to the inner wall of the sliding groove, and the other end of the two springs is connected to the sliding arc-shaped block. The handle is installed at the other end of the rotating shaft. When the door is fixed, the door is rotated to pass the lock plate through the through slot and then into the rotating circular slot. The shaft is then driven to rotate by turning the handle. At this time, the rotating disk rotates, driving the sliding arc surface block to rotate. The arc surface of the sliding arc surface block is squeezed against the inner wall of the rotating chamber, so that the sliding arc surface block enters the sliding slot. Then, when the handle is rotated ninety degrees, the sliding arc surface block is aligned with another set of vertical arc-shaped limit slots. The elasticity of the spring is then used to push the sliding arc surface block into the arc-shaped limit slot for limitation. The rotation of the shaft drives the lock plate to rotate in the rotating circular slot, thereby completing the fixation of the door.

[0011] Preferably, the sliding mechanism includes a slide and a sliding placement plate. The slide is installed on the inner wall of the drying box and the partition inside the drying box, and the sliding placement plate is slidably installed on the slide. By sliding the sliding placement plate in the slide, it is convenient to load and unload organic chemical raw materials, thereby improving convenience.

[0012] Preferably, the limiting mechanism includes a placement tube, a placement plate and a limiting handle, the limiting perforation is arranged on the sliding placement plate, the limiting platform is arranged on the sliding placement plate, the limiting platform and the limiting perforation are concentric, the limiting card seat is arranged on the limiting perforation, the limiting card seat is connected with the limiting platform, the placement tube is installed on the placement plate, the limiting handle is installed on the placement plate, the placement tube can pass through the limiting perforation, the placement plate can be stuck in the limiting platform, and the limiting handle can be limited in the limiting card seat; the organic chemical raw materials are placed by the placement tube, and the stability is improved by placing the placement plate on the limiting platform, passing the placement tube through the limiting perforation, and limiting the limiting handle in the limiting card seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the drying mechanism facilitates vacuuming and heating treatment, thereby improving the drying efficiency of organic chemical raw materials; the sealing mechanism facilitates sealing the drying mechanism, thereby improving the sealing performance of the drying mechanism; the sealing mechanism is easy to disassemble and replace, thereby preventing the sealing performance from being reduced and affecting the drying efficiency; the closing auxiliary mechanism and the auxiliary door closing mechanism facilitate rapid closing of the drying mechanism, thereby improving convenience; the sliding mechanism facilitates loading and unloading of organic chemical raw materials, thereby improving convenience; and the limiting mechanism facilitates the placement of organic chemical raw materials, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a first axonometric structural diagram of the present invention;

[0015] Figure 2 This is a second axonometric structural diagram of the present invention;

[0016] Figure 3 This is a third axonometric structural diagram of the present utility model;

[0017] Figure 4 This is a fourth axonometric structural diagram of the present utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the axonometric structure of the utility model in a top view;

[0020] Figure 7 It is a schematic diagram of the side-view cross-section axonometric structure of the utility model;

[0021] Figure 8 It is a cross-sectional schematic diagram of the box door of the present invention;

[0022] Figure 9 This utility model Figure 7 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 10 This utility model Figure 8 Schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 11 This utility model Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0025] Markings in the accompanying drawings: 01, drying mechanism; 11, drying box; 12, box door; 13, electric heating plate; 14, vacuum pump; 15, control panel; 02, sealing mechanism; 21, sealing mounting ring; 22, sealing gasket; 23, sealing limit ring; 24, fixing bolt; 25, sealing extrusion frame; 03, door closing mechanism; 31, rotating shaft; 32, locking plate; 33, through groove; 34, rotating circular groove; 04, closing auxiliary mechanism; 41, arc-shaped limit groove; 42, rotating disk; 43, sliding arc block; 44, spring; 45, handle; 05, sliding mechanism; 51, slide; 52, sliding placement plate; 06, limit mechanism; 61, limit perforation; 62, limit platform; 63, limit card seat; 64, placement cylinder; 65, placement disk; 66, limit handle. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0027] Example 1

[0028] like Figures 1 to 10 As shown, a vacuum drying oven for organic chemical raw materials includes a drying mechanism 01, a sealing mechanism 02, a door closing mechanism 03, a closing auxiliary mechanism 04, a sliding mechanism 05, and a limiting mechanism 06. The sealing mechanism 02 is mounted on the drying mechanism 01, the door closing mechanism 03 is mounted on the drying mechanism 01, the closing auxiliary mechanism 04 is mounted on the door closing mechanism 03, the sliding mechanism 05 is mounted in the drying mechanism 01, and the limiting mechanism 06 is mounted on the sliding mechanism 05.

[0029] The drying mechanism 01 facilitates vacuuming and heating treatment, the sealing mechanism 02 facilitates sealing the drying mechanism 01 and improves the sealing performance of the drying mechanism 01, the closing auxiliary mechanism 04 assists the door closing mechanism 03 to facilitate rapid closing of the drying mechanism 01, the sliding mechanism 05 facilitates loading and unloading of organic chemical raw materials, and the limiting mechanism 06 facilitates the placement of organic chemical raw materials;

[0030] The drying mechanism 01 includes a drying box 11, a box door 12, an electric heating plate 13, a vacuum pump 14, and a control panel 15. The box door 12 is rotatably mounted on the drying box 11 via a hinge. A partition is provided inside the drying box 11. The electric heating plate 13 is mounted inside the drying box 11 and is located on the right side of the partition. The control panel 15 is mounted on the drying box 11, and the vacuum pump 14 is mounted on the partition.

[0031] The sealing mechanism 02 includes a sealing mounting ring 21, a sealing gasket 22, a sealing limiting ring 23, fixing bolts 24, and a sealing extrusion frame 25. The sealing mounting ring 21 is installed at the opening of the drying oven 11. The sealing limiting ring 23 is installed on the sealing gasket 22. The sealing gasket 22 is installed on the sealing mounting ring 21 through the sealing limiting ring 23. The fixing bolts 24 are installed on the sealing mounting ring 21 through a threaded relationship. The sealing extrusion frame 25 is installed on the oven door 12.

[0032] The door closing mechanism 03 includes a rotating shaft 31, a locking plate 32, a through slot 33, and a rotating circular slot 34. The rotating shaft 31 is rotatably mounted on the door 12, the locking plate 32 is mounted on one end of the rotating shaft 31, the through slot 33 is mounted on the drying box 11, and the rotating circular slot 34 is set in the side wall of the drying box 11 and is connected to the through slot 33.

[0033] The closing auxiliary mechanism 04 includes four arc-shaped limit grooves 41, a rotating disk 42, two sliding arc blocks 43, two springs 44 and a handle 45. A rotating chamber is provided in the box door 12, and four arc-shaped limit grooves 41 are provided on the inner wall of the rotating chamber. The rotating disk 42 is mounted on the rotating shaft 31, and the rotating disk 42 is rotatably mounted in the rotating chamber. Two sliding grooves are provided on the rotating disk 42, and the two sliding arc blocks 43 are slidably mounted in the two sliding grooves. The outer ends of the two sliding arc blocks 43 are arc surfaces, and the arc-shaped limit groove 41 is an arc surface. One end of the two springs 44 is connected to the inner wall of the sliding groove, and the other end of the two springs 44 is connected to the sliding arc block 43. The handle 45 is mounted on the other end of the rotating shaft 31. The four arc-shaped limit grooves 41 are grouped in two and are perpendicular to each other.

[0034] After the organic chemical raw materials are placed in the drying box 11, the box door 12 is closed, and then the electric heating plate 13 is turned on for heating. At the same time, the vacuum pump 14 is turned on to evacuate the drying box 11 to improve the efficiency of drying the organic chemical raw materials. The whole is controlled by the control panel 15. When the box door 12 is rotated to be closed, the sealing extrusion frame 25 is in contact with the sealing gasket 22 to extrude it, thereby completing the sealing and improving the sealing quality and drying efficiency. When the sealing gasket 22 is replaced and installed, the sealing limiting ring 23 is aligned with the sealing mounting ring 21, and then the sealing gasket 22 is pressed to deform the sealing limiting ring 23, and then the sealing limiting ring 23 is inserted into the sealing mounting ring 21, and the sealing limiting ring 23 is fixed by rotating the fixing bolt 24, thereby completing the replacement of the sealing gasket 22. The lock plate 32 is driven to rotate in the rotating groove 34 by the rotation of the rotating shaft 31, thereby completing the fixing of the box door 12.

[0035] Example 2

[0036] like Figure 1 and 11As shown, a vacuum drying oven for organic chemical raw materials includes a drying mechanism 01, a sealing mechanism 02, a door closing mechanism 03, a closing auxiliary mechanism 04, a sliding mechanism 05, and a limiting mechanism 06. The sealing mechanism 02 is mounted on the drying mechanism 01, the door closing mechanism 03 is mounted on the drying mechanism 01, the closing auxiliary mechanism 04 is mounted on the door closing mechanism 03, the sliding mechanism 05 is mounted in the drying mechanism 01, and the limiting mechanism 06 is mounted on the sliding mechanism 05.

[0037] The drying mechanism 01 facilitates vacuuming and heating treatment, the sealing mechanism 02 facilitates sealing the drying mechanism 01 and improves the sealing performance of the drying mechanism 01, the closing auxiliary mechanism 04 assists the door closing mechanism 03 to facilitate rapid closing of the drying mechanism 01, the sliding mechanism 05 facilitates loading and unloading of organic chemical raw materials, and the limiting mechanism 06 facilitates the placement of organic chemical raw materials;

[0038] The drying mechanism 01 includes a drying box 11, a box door 12, an electric heating plate 13, a vacuum pump 14, and a control panel 15. The box door 12 is rotatably mounted on the drying box 11 via a hinge. A partition is provided inside the drying box 11. The electric heating plate 13 is mounted inside the drying box 11 and is located on the right side of the partition. The control panel 15 is mounted on the drying box 11, and the vacuum pump 14 is mounted on the partition.

[0039] The sliding mechanism 05 includes a slide 51 and a sliding placement plate 52. The slide 51 is installed on the inner wall of the drying box 11 and the partition inside the drying box 11. The sliding placement plate 52 is slidably installed on the slide 51.

[0040] The limiting mechanism 06 includes a placement tube 64, a placement plate 65 and a limiting handle 66. The limiting through-hole 61 is provided on the sliding placement plate 52, the limiting platform 62 is provided on the sliding placement plate 52, the limiting platform 62 is concentric with the limiting through-hole 61, the limiting clamping seat 63 is provided on the limiting through-hole 61, the limiting clamping seat 63 is communicated with the limiting platform 62, the placement tube 64 is installed on the placement plate 65, the limiting handle 66 is installed on the placement plate 65, the placement tube 64 can pass through the limiting through-hole 61, the placement plate 65 can be stuck in the limiting platform 62, and the limiting handle 66 can be limited in the limiting clamping seat 63;

[0041] The drying mechanism 01 facilitates vacuuming and heating treatment, thereby improving the drying efficiency of the organic chemical raw materials. The sealing mechanism 02 facilitates sealing the drying mechanism 01, thereby improving the sealing performance of the drying mechanism 01. The sealing mechanism 02 is easy to disassemble and replace, thereby preventing the sealing performance from being reduced and affecting the drying efficiency. The closing auxiliary mechanism 04 assists the door closing mechanism 03 in facilitating rapid closing of the drying mechanism 01, thereby improving convenience. The sliding placement plate 52 is slidably installed in the slideway 51, thereby facilitating loading and unloading of the organic chemical raw materials, thereby improving convenience. The organic chemical raw materials are placed through the placement tube 64, and stability is improved by placing the placement plate 65 on the limiting platform 62, passing the placement tube 64 through the limiting through-hole 61, and limiting the limiting handle 66 in the limiting seat 63.

[0042] like Figures 1 to 11 As shown, the utility model is a vacuum drying oven for organic chemical raw materials. When it is in operation, after the organic chemical raw materials are placed in the drying oven 11, the oven door 12 is closed, the electric heating plate 13 is turned on for heating, and the vacuum pump 14 is turned on to evacuate the drying oven 11, thereby improving the efficiency of drying the organic chemical raw materials. The whole is controlled by the control panel 15. When the oven door 12 is rotated to close, the sealing extrusion frame 25 contacts and squeezes the sealing gasket 22, thereby completing the seal, improving the sealing quality and the drying efficiency. When the sealing gasket 22 is replaced and installed, the sealing limiting ring 23 is aligned with the sealing mounting ring 21, and then the sealing gasket 22 is pressed to deform the sealing limiting ring 23, and then the sealing limiting ring 23 is inserted into the sealing mounting ring 21. The sealing limiting ring 23 is fixed by rotating the fixing bolt 24, thereby completing the replacement and fixation of the sealing gasket 22, effectively preventing the sealing gasket 22 from aging and causing the sealing to be reduced. When the oven door 12 is fixed, the oven door 12 is rotated to press the lock plate 32 After passing through the through groove 33, it enters the rotating circular groove 34, and then the rotating shaft 31 is rotated by rotating the handle 45. At this time, the rotating disk 42 rotates, driving the sliding arc surface block 43 to rotate. The arc surface of the sliding arc surface block 43 is squeezed with the inner wall of the rotating chamber, so that the sliding arc surface block 43 enters the sliding groove. Then, when the handle 45 is rotated ninety degrees, the sliding arc surface block 43 is aligned with another set of vertical arc-shaped limiting grooves 41, and then the sliding arc surface block 43 is pushed into the arc-shaped limiting groove by the elasticity of the spring 44. 41 is limited, and the rotation of the rotating shaft 31 drives the lock plate 32 to rotate in the rotating circular groove 34, thereby completing the fixation of the box door 12, and the sliding placement plate 52 is slidably installed in the slide 51, which is convenient for loading and unloading organic chemical raw materials and improves convenience. The organic chemical raw materials are placed through the placement cylinder 64, and the placement plate 65 is placed on the limiting platform 62, the placement cylinder 64 is passed through the limiting through-hole 61, and the limiting handle 66 is limited in the limiting seat 63 to improve stability.

[0043] The electric heating plate 13, vacuum pump 14 and control panel 15 of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manuals without the need for creative work by technicians in this field.

[0044] The main functions achieved by the utility model are: during the operation of the vacuum drying box, the sealing performance is improved, the sealing gasket is easily replaced and the box door 12 is easily closed, the convenience is improved, and the loading and unloading of organic chemical raw materials is facilitated.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum drying oven for organic chemical raw materials, comprising a drying mechanism (01); characterized in that: The drying machine further comprises a sealing mechanism (02), a door closing mechanism (03), a closing auxiliary mechanism (04), a sliding mechanism (05) and a limiting mechanism (06); the sealing mechanism (02) is mounted on the drying mechanism (01); the door closing mechanism (03) is mounted on the drying mechanism (01); the closing auxiliary mechanism (04) is mounted on the door closing mechanism (03); the sliding mechanism (05) is mounted in the drying mechanism (01); and the limiting mechanism (06) is mounted on the sliding mechanism (05); The drying mechanism (01) is convenient for vacuuming and heating treatment, the sealing mechanism (02) is convenient for sealing the drying mechanism (01) and improving the sealing performance of the drying mechanism (01), the closing auxiliary mechanism (04) assists the door closing mechanism (03) to facilitate rapid closing of the drying mechanism (01), the sliding mechanism (05) is convenient for loading and unloading organic chemical raw materials, and the limiting mechanism (06) is convenient for placing the organic chemical raw materials.

2. The organic chemical raw material vacuum drying oven according to claim 1, characterized in that: The drying mechanism (01) comprises a drying box (11), a box door (12), an electric heating plate (13), a vacuum pump (14) and a control panel (15). The box door (12) is rotatably mounted on the drying box (11) through a hinge. A partition is provided in the drying box (11). The electric heating plate (13) is mounted in the drying box (11). The electric heating plate (13) is located on the right side of the partition. The control panel (15) is mounted on the drying box (11). The vacuum pump (14) is mounted on the partition.

3. An organic chemical raw material vacuum drying oven according to claim 2, characterized in that: The sealing mechanism (02) comprises a sealing mounting ring (21), a sealing gasket (22), a sealing limiting ring (23), a fixing bolt (24) and a sealing extrusion frame (25). The sealing mounting ring (21) is mounted at the opening of the drying box (11). The sealing limiting ring (23) is mounted on the sealing gasket (22). The sealing gasket (22) is mounted on the sealing mounting ring (21) through the sealing limiting ring (23). The fixing bolt (24) is mounted on the sealing mounting ring (21) through a threaded relationship. The sealing extrusion frame (25) is mounted on the box door (12).

4. The organic chemical raw material vacuum drying oven according to claim 2, characterized in that: The door closing mechanism (03) comprises a rotating shaft (31), a locking plate (32), a through groove (33) and a rotating circular groove (34); the rotating shaft (31) is rotatably mounted on the box door (12); the locking plate (32) is mounted on one end of the rotating shaft (31); the through groove (33) is mounted on the drying box (11); the rotating circular groove (34) is arranged in the side wall of the drying box (11); and the rotating circular groove (34) is communicated with the through groove (33).

5. The organic chemical raw material vacuum drying oven according to claim 4, characterized in that: The closing auxiliary mechanism (04) comprises four arc-shaped limiting grooves (41), a rotating disk (42), two sliding arc-shaped blocks (43), two springs (44) and a handle (45). A rotating chamber is provided in the box door (12), and four arc-shaped limiting grooves (41) are provided on the inner wall of the rotating chamber. The rotating disk (42) is mounted on the rotating shaft (31). The rotating disk (42) is rotatably mounted in the rotating chamber. Two sliding grooves are provided on the rotating disk (42). Two sliding arc-shaped blocks (43) are slidably mounted in the two sliding grooves. The outer ends of the two sliding arc-shaped blocks (43) are arc-shaped, and the arc-shaped limiting groove (41) is an arc-shaped surface. One end of the two springs (44) is connected to the inner wall of the sliding groove, and the other ends of the two springs (44) are connected to the sliding arc-shaped block (43). The handle (45) is mounted on the other end of the rotating shaft (31). The four arc-shaped limiting grooves (41) are in groups of two and are perpendicular to each other.

6. The organic chemical raw material vacuum drying oven according to claim 2, characterized in that: The sliding mechanism (05) comprises a slideway (51) and a sliding placement plate (52). The slideway (51) is installed on the inner wall of the drying box (11) and the partition plate inside the drying box (11). The sliding placement plate (52) is slidably installed on the slideway (51).

7. An organic chemical raw material vacuum drying oven according to claim 6, characterized in that: The limiting mechanism (06) comprises a placing tube (64), a placing plate (65) and a limiting handle (66); the limiting perforation (61) is arranged on the sliding placing plate (52); the limiting platform (62) is arranged on the sliding placing plate (52); the limiting platform (62) is concentric with the limiting perforation (61); the limiting clamping seat (63) is arranged on the limiting perforation (61); the limiting clamping seat (63) is communicated with the limiting platform (62); the placing tube (64) is installed on the placing plate (65); the limiting handle (66) is installed on the placing plate (65); the placing tube (64) can pass through the limiting perforation (61); the placing plate (65) can be clamped in the limiting platform (62); and the limiting handle (66) can be limited in the limiting clamping seat (63).

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