Hot air circulation vacuum drying furnace

Abstract

The utility model relates to the technical field of drying ovens, in particular to a hot air circulation vacuum drying oven, which is convenient for quickly drying a small to-be-dried piece, filtering air, absorbing water vapor and replacing and installing a filter screen, and improves the practicability and the drying efficiency and quality. Comprising a hot air circulation mechanism and a vacuum mechanism. The hot air circulating mechanism is mounted on the switching mechanism, the filtering mechanism is mounted at the top end of the inner wall of the switching mechanism, the vacuum mechanism is mounted at the top end of the switching mechanism, the rotating mechanism is mounted in the switching mechanism, and the storage mechanism is mounted on the rotating mechanism; opening and closing are facilitated through the switching mechanism, the hot air circulation mechanism dries the workpieces, and the filtering mechanism filters air dried by the hot air circulation mechanism and absorbs water vapor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drying furnace, in particular to a kind of hot air circulation vacuum drying furnace. BACKGROUND

[0002] The working principle of vacuum drying furnace is mainly based on heat transfer and substance evaporation in vacuum environment.In vacuum state, by reducing ambient pressure, the boiling point of substance will be significantly reduced, thereby accelerating the evaporation rate, realizing rapid drying.

[0003] The existing drying furnace, for example, the prior art with the application number CN201210488970.1, including guiding assembly, uncoiling assembly, uncoiling roller, vacuum furnace body, air inlet pipe and multi-wing fan wheel, etc., through air transport luminous device hot air is sent to the inner cavity of vacuum furnace body, and forms loop circulation heating, circulating hot air can quickly heat the air in vacuum furnace body, and make the air in inner cavity flow up quickly, form a dynamic heating environment, let the heated gas fully penetrate into every corner, avoid to appear drying dead angle.

[0004] But the prior art is not convenient for the rapid drying of smaller drying pieces, which reduces the convenience, and the prior art is not convenient for filtering air and replacing and installing filter screen, which reduces the convenience. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a kind of hot air circulation vacuum drying furnace, which is convenient for the rapid drying of smaller drying pieces, and is convenient for filtering air and water vapor absorption and replacing and installing filter screen, improves practicality and the efficiency quality of drying, improves practicality and the efficiency quality of drying.

[0006] The utility model discloses a hot -blast circulation vacuum drying furnace, including hot -blast circulation mechanism and vacuum mechanism, still including switch mechanism, filter mechanism, rotating mechanism and placing mechanism, and hot -blast circulation mechanism installs on switch mechanism, and filter mechanism installs the top of switch mechanism inner wall, and vacuum mechanism installs at the top of switch mechanism, and rotating mechanism installs in switch mechanism, and placing mechanism installs on rotating mechanism, and through switch mechanism, it is convenient to open and close, and hot -blast circulation mechanism carries out the drying of work piece, and filter mechanism carries out the filtration to the air of hot -blast circulation mechanism drying and absorbs to water vapor, and vacuum mechanism carries out the vacuumization processing in switch mechanism, and rotating mechanism drives placing mechanism to rotate and carries out the multidirectional drying to material, and placing mechanism is convenient for to the material fast placing, and through switch mechanism, it is convenient to open and close, and provide the convenience for the feeding and discharging, and hot -blast circulation mechanism carries out the drying of work piece, and filter mechanism carries out the filtration to the air of hot -blast circulation mechanism drying and absorbs to water vapor, improves the quality of drying, and vacuum mechanism carries out the vacuumization processing in switch mechanism, improves the efficiency of drying, and rotating mechanism drives placing mechanism to rotate and carries out the multidirectional drying to material, improves the quality of drying, and placing mechanism is convenient for to the material fast placing, improves the convenience.

[0007] Preferably, the switch mechanism comprises a furnace body, a sealing door, two fixed ears, a rotating plate, a threaded rod and a fixed sheet, the sealing door is rotatably installed on the furnace body through a hinge, the furnace body and the sealing door are both provided with the fixed ears, the two fixed ears are provided with fixed grooves, the rotating plate is rotatably installed in the fixed grooves of the fixed ears on the sealing door through a rotating shaft, the threaded rod is installed on the rotating plate through a threaded connection, and the fixed sheet is installed on the other end of the threaded rod; when the furnace body needs to be sealed, the sealing door is closed, then the rotating plate is rotated to make the threaded rod penetrate through the fixed grooves of the two fixed ears, and then the threaded rod is rotated to fix the two fixed ears through the threaded connection of the threaded rod and the fixed sheet, so that the closing of the sealing door is completed.

[0008] Preferably, the hot -blast circulation mechanism comprises a circulating pipe, a circulating pump, an air outlet cover, a heat preservation box and a heating wire, one end of the circulating pipe is installed at the top of the furnace body, the other end of the circulating pipe is installed at the bottom of the furnace body, the circulating pump is installed on the circulating pipe, the air outlet cover is installed at the bottom of the inside of the furnace body, the circulating pipe is communicated with the air outlet cover, the heat preservation box is installed on the outer wall of the furnace body, the circulating pipe penetrates through the circulating pipe, and the heating wire is installed in the heat preservation box and spirally installed on the circulating pipe; the air in the furnace body is circulated through the circulating pipe by opening the circulating pump, then the work piece in the placing mechanism is dried through the air outlet cover, the air is heated through the air outlet cover, and the efficiency of drying the work piece is improved.

[0009] Preferably, the filtering mechanism comprises a mounting frame, a water absorption filter plate, a sliding cylinder, a locking rod, a guide rod and a spring, the mounting frame is mounted at the top end of the inside of the furnace body, the water absorption filter plate is slidingly mounted in the mounting frame, the sliding cylinder is mounted at the bottom end of the mounting frame, the locking rod is slidingly mounted in the sliding cylinder, the guide rod is mounted on the locking rod, the guide rod is slidingly mounted on the sliding cylinder, one end of the spring is mounted on the inner wall of the sliding cylinder, the other end of the spring is mounted at the bottom end of the locking rod, and the water absorption filter plate is provided with a fixing hole; the impurities and water vapor in the air are treated through the water absorption filter plate, when the water absorption filter plate is cleaned and replaced and mounted, the water absorption filter plate is slidingly mounted in the mounting frame, when the locking rod is aligned with the fixing hole of the water absorption filter plate, the locking rod is pushed into the fixing hole of the water absorption filter plate through the elasticity of the spring to complete the fixation of the water absorption filter plate.

[0010] Preferably, the vacuum mechanism comprises a vacuum pump and an air exhaust pipe, the vacuum pump is mounted at the top end of the furnace body, and the air exhaust pipe connects the vacuum pump and the furnace body; when the workpiece in the placing mechanism reaches the moving temperature, the air in the furnace body is exhausted through the vacuum pump by opening the air exhaust pipe, thereby improving the drying efficiency of the workpiece.

[0011] Preferably, the rotating mechanism comprises a rotating shaft and a rotating motor, the rotating shaft is rotatably mounted on the side wall of the furnace body through a sealing bearing, the rotating motor is mounted on the outer wall of the furnace body through a motor bracket, and the output end of the rotating motor is connected with the rotating shaft; the rotating shaft is driven to rotate by opening the rotating motor, thereby driving the placing mechanism to rotate, so as to improve the uniformity and heating rate of the workpiece in the placing mechanism.

[0012] Preferably, the placing mechanism comprises a placing cylinder, an arc-shaped cover plate, a sliding sleeve, a U-shaped locking column and a second spring, the placing cylinder is mounted on the rotating shaft, the placing cylinder is provided with a placing opening, the arc-shaped cover plate is rotatably mounted on the placing cylinder through a hinge, the arc-shaped cover plate is located at the placing opening of the placing cylinder, the sliding sleeve is mounted on the outer wall of the placing cylinder, one end of the U-shaped locking column is slidingly mounted in the sliding sleeve, the arc-shaped cover plate is provided with a lock eye, the U-shaped locking column can be inserted into the lock eye, and the second spring connects the inner wall of the sliding sleeve and the U-shaped locking column; the workpiece is added into the placing cylinder by opening the arc-shaped cover plate, then the U-shaped locking column is pulled to align with the lock eye of the arc-shaped cover plate, the U-shaped locking column is released, the U-shaped locking column is inserted into the lock eye of the arc-shaped cover plate through the elasticity of the second spring to complete the fixation of the arc-shaped cover plate, thereby completing the feeding, then the rotating shaft is driven to rotate by opening the rotating motor, thereby driving the placing cylinder to rotate, so as to improve the uniformity and heating rate of the workpiece in the placing cylinder.

[0013] Compared with the prior art, the utility model has the advantages that: the switch mechanism is convenient to open and close, providing convenience for feeding and discharging, the hot air circulation mechanism dries the workpiece, the filtering mechanism filters the air dried by the hot air circulation mechanism and absorbs water vapor, improving the drying quality, the vacuum mechanism performs vacuum treatment on the switch mechanism, improving the drying efficiency, the rotating mechanism drives the placing mechanism to rotate and dry the material from multiple directions, improving the drying quality, the placing mechanism is convenient for quickly placing the material, improving the convenience. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the first axonometric structure schematic diagram of the utility model;

[0015] Figure 2 It is the second axonometric structure schematic diagram of the utility model;

[0016] Figure 3 It is the first front view cross section structure schematic diagram of the utility model;

[0017] Figure 4 It is the second front view cross section structure schematic diagram of the utility model;

[0018] Figure 5 It is the side view cross section structure schematic diagram of the utility model;

[0019] Figure 6 It is the first front view cross section axonometric structure schematic diagram of the utility model;

[0020] Figure 7 It is the second front view cross section axonometric structure schematic diagram of the utility model;

[0021] Figure 8 It is the Figure 2 Enlarged structure schematic diagram of A place in the utility model;

[0022] Figure 9 It is the Figure 4 Enlarged structure schematic diagram of B place in the utility model;

[0023] Figure 10 It is the Figure 5 Enlarged structure schematic diagram of C place in the utility model;

[0024] The attached diagram is labeled as follows: 01, Switching mechanism; 11, Furnace body; 12, Sealing door; 13, Fixing lug; 14, Rotating plate; 15, Threaded rod; 16, Fixing plate; 02, Hot air circulation mechanism; 21, Circulation pipe; 22, Circulation pump; 23, Exhaust hood; 24, Insulation box; 25, Heating wire; 03, Filtering mechanism; 31, Mounting bracket; 32, Water absorption filter plate; 33, Sliding cylinder; 34, Locking rod; 35, Guide rod; 36, Spring; 04, Vacuum mechanism; 41, Vacuum pump; 42, Evacuation pipe; 05, Rotating mechanism; 51, Rotating shaft; 52, Rotating motor; 06, Storage mechanism; 61, Storage cylinder; 62, Arc-shaped cover plate; 63, Sliding sleeve; 64, U-shaped locking pin; 65, Second spring. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0026] like Figures 1 to 9 As shown, a hot air circulating vacuum drying oven includes a hot air circulating mechanism 02 and a vacuum mechanism 04, as well as a switching mechanism 01, a filtering mechanism 03, a rotating mechanism 05 and a placing mechanism 06. The hot air circulating mechanism 02 is installed on the switching mechanism 01, the filtering mechanism 03 is installed on the top of the inner wall of the switching mechanism 01, the vacuum mechanism 04 is installed on the top of the switching mechanism 01, the rotating mechanism 05 is installed inside the switching mechanism 01, and the placing mechanism 06 is installed on the rotating mechanism 05.

[0027] The switch mechanism 01 facilitates opening and closing, the hot air circulation mechanism 02 dries the workpiece, the filter mechanism 03 filters the air dried by the hot air circulation mechanism 02 and absorbs moisture, the vacuum mechanism 04 evacuates the switch mechanism 01, the rotating mechanism 05 drives the placement mechanism 06 to rotate and dry the material from multiple directions, and the placement mechanism 06 facilitates the quick placement of the material.

[0028] The switching mechanism 01 includes a furnace body 11, a sealing door 12, two fixing ears 13, a rotating plate 14, a threaded rod 15, and a fixing plate 16. The sealing door 12 is rotatably mounted on the furnace body 11 via a hinge. Fixing ears 13 are installed on both the furnace body 11 and the sealing door 12. Fixing grooves are provided on the two fixing ears 13. The rotating plate 14 is rotatably mounted in the fixing grooves of the fixing ears 13 on the sealing door 12 via a rotating shaft. The threaded rod 15 is mounted on the rotating plate 14 via a threaded connection. The fixing plate 16 is mounted on the other end of the threaded rod 15.

[0029] The hot air circulation mechanism 02 comprises a circulation pipe 21, a circulation pump 22, an air outlet cover 23, a heat preservation box 24 and a heating wire 25, one end of the circulation pipe 21 is installed at the top end of the furnace body 11, the other end of the circulation pipe 21 is installed at the bottom end of the furnace body 11, the circulation pump 22 is installed on the circulation pipe 21, the air outlet cover 23 is installed at the bottom end inside the furnace body 11, the circulation pipe 21 is communicated with the air outlet cover 23, the heat preservation box 24 is installed on the outer wall of the furnace body 11, the circulation pipe 21 penetrates through the heat preservation box 24, and the heating wire 25 is installed in the heat preservation box 24 and spirally installed on the circulation pipe 21;

[0030] The filtering mechanism 03 comprises a mounting frame 31, a water absorption filter plate 32, a sliding cylinder 33, a locking rod 34, a guide rod 35 and a spring 36, the mounting frame 31 is installed at the top end inside the furnace body 11, the water absorption filter plate 32 is slidingly installed in the mounting frame 31, the sliding cylinder 33 is installed at the bottom end of the mounting frame 31, the locking rod 34 is slidingly installed in the sliding cylinder 33, the guide rod 35 is installed on the locking rod 34, the guide rod 35 is slidingly installed on the sliding cylinder 33, one end of the spring 36 is installed on the inner wall of the sliding cylinder 33, and the other end of the spring 36 is installed at the bottom end of the locking rod 34, and the water absorption filter plate 32 is provided with a fixing hole;

[0031] The vacuum mechanism 04 comprises a vacuum pump 41 and an air exhaust pipe 42, the vacuum pump 41 is installed at the top end of the furnace body 11, and the air exhaust pipe 42 connects the vacuum pump 41 and the furnace body 11;

[0032] When the furnace body 11 needs to be sealed, the sealing door 12 is closed, then the threaded rod 15 is penetrated through the fixing grooves of the two fixing lugs 13 by rotating the rotating plate 14, then the threaded rod 15 and the fixing plate 16 are used to fix the two fixing lugs 13 by rotating the threaded rod 15, so that the sealing door 12 is closed, the air in the furnace body 11 is circulated through the circulation pipe 21 by opening the circulation pump 22, then the workpiece in the placing mechanism 06 is dried through the air outlet cover 23, the air is heated through the air outlet cover 23, the drying efficiency of the workpiece is improved, the impurities and water vapor in the air are treated through the water absorption filter plate 32, when the water absorption filter plate 32 is cleaned and replaced, the water absorption filter plate 32 is slidingly installed in the mounting frame 31, when the locking rod 34 is aligned with the fixing hole of the water absorption filter plate 32, the locking rod 34 is pushed into the fixing hole of the water absorption filter plate 32 through the elasticity of the spring 36, so that the water absorption filter plate 32 is fixed, when the temperature of the workpiece in the placing cylinder 61 reaches the moving temperature, the air in the furnace body 11 is exhausted through the vacuum pump 41 by opening the air exhaust pipe 42, so that the drying efficiency of the workpiece is improved. Example 2

[0033] As Figure 5 , Figure 7 and Figure 10As shown, a hot air circulation vacuum drying furnace, comprising a hot air circulation mechanism 02 and a vacuum mechanism 04, also comprising a switch mechanism 01, a filtering mechanism 03, a rotating mechanism 05 and a placing mechanism 06, the hot air circulation mechanism 02 is installed on the switch mechanism 01, the filtering mechanism 03 is installed on the top end of the inner wall of the switch mechanism 01, the vacuum mechanism 04 is installed on the top end of the switch mechanism 01, the rotating mechanism 05 is installed in the switch mechanism 01, and the placing mechanism 06 is installed on the rotating mechanism 05;

[0034] The switch mechanism 01 is convenient to open and close, the hot air circulation mechanism 02 dries the workpiece, the filtering mechanism 03 filters the air dried by the hot air circulation mechanism 02 and absorbs water vapor, the vacuum mechanism 04 performs vacuum treatment in the switch mechanism 01, the rotating mechanism 05 drives the placing mechanism 06 to rotate to dry the material in multiple directions, and the placing mechanism 06 is convenient for quickly placing the material;

[0035] The rotating mechanism 05 comprises a rotating shaft 51 and a rotating motor 52, the rotating shaft 51 is rotatably installed on the side wall of the furnace body 11 through a sealing bearing, the rotating motor 52 is installed on the outer wall of the furnace body 11 through a motor bracket, and the output end of the rotating motor 52 is connected with the rotating shaft 51;

[0036] The placing mechanism 06 comprises a placing cylinder 61, an arc-shaped cover plate 62, a sliding sleeve 63, a U-shaped lock column 64 and a second spring 65, the placing cylinder 61 is installed on the rotating shaft 51, the placing cylinder 61 is provided with a placing opening, the arc-shaped cover plate 62 is rotatably installed on the placing cylinder 61 through a hinge, the arc-shaped cover plate 62 is located at the placing opening of the placing cylinder 61, the sliding sleeve 63 is installed on the outer wall of the placing cylinder 61, one end of the U-shaped lock column 64 is slidably installed in the sliding sleeve 63, the arc-shaped cover plate 62 is provided with a lock eye, the U-shaped lock column 64 can be inserted into the lock eye, and the second spring 65 connects the inner wall of the sliding sleeve 63 with the U-shaped lock column 64;

[0037] The arc-shaped cover plate 62 is opened to add the workpiece into the placing cylinder 61, then the U-shaped lock column 64 is pulled to align the lock eye of the arc-shaped cover plate 62, the U-shaped lock column 64 is released, the U-shaped lock column 64 is inserted into the lock eye of the arc-shaped cover plate 62 through the elasticity of the second spring 65 to complete the fixation of the arc-shaped cover plate 62, thereby completing the feeding, then the rotating motor 52 is opened to drive the rotating shaft 51 to rotate, thereby driving the placing cylinder 61 to rotate, so as to improve the uniformity and heating rate of the workpiece in the placing cylinder 61.

[0038] As Figures 1 to 10As shown, the hot air circulating vacuum drying furnace of the utility model, when the furnace body 11 is sealed and handled, the sealing door 12 is closed, then the threaded rod 15 is penetrated through the fixed groove of the two fixed ears 13 by rotating the rotating plate 14, then the threaded rod 15 is rotated, the threaded rod 15 and the fixed sheet 16 are fixed to the two fixed ears 13 through the threaded relationship, and then the closing of the sealing door 12 is completed, the air in the furnace body 11 is circulated through the circulating pump 22, then the workpiece in the placing mechanism 06 is dried through the air outlet cover 23, the air is heated through the air outlet cover 23, the efficiency of the workpiece drying is improved, the impurities and water vapor in the air are treated through the water absorption filter plate 32, when the water absorption filter plate 32 is cleaned and replaced and installed, the water absorption filter plate 32 is slidably installed in the mounting frame 31, when the lock rod 34 is aligned with the fixed hole of the water absorption filter plate 32, the lock rod 34 is pushed into the fixed hole of the water absorption filter plate 32 through the elasticity of the spring 36 to complete the fixation of the water absorption filter plate 32, when the workpiece in the placing cylinder 61 reaches the moving temperature, the air in the furnace body 11 is pumped out through the vacuum pump 41 by opening the air exhaust pipe 42, and then the efficiency of the workpiece drying is improved, the workpiece is added to the placing cylinder 61 by opening the arc-shaped cover plate 62, then the U-shaped lock column 64 is pulled, the U-shaped lock column 64 is aligned with the lock eye of the arc-shaped cover plate 62, the U-shaped lock column 64 is released, the U-shaped lock column 64 is inserted into the lock eye of the arc-shaped cover plate 62 through the elasticity of the second spring 65 to complete the fixation of the arc-shaped cover plate 62, and then the feeding is completed, then the rotating motor 52 is opened to drive the rotating shaft 51 to rotate, and then the placing cylinder 61 is rotated, so that the uniformity and the heating rate of the workpiece in the placing cylinder 61 are improved.

[0039] The heating wire 25, the circulating pump 22, the vacuum pump 41 and the rotating motor 52 are purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0040] The utility model discloses realize the main function is: in the drying furnace working process, it is convenient to the smaller workpiece that dries to dry fast, and it is convenient to filter and water vapor absorption and convenient to replace and install the filter screen, improve practicality and drying efficiency quality.

[0041] The above only is the preferred implementation of the utility model, should point out, for the ordinary technical personnel in the prior art, on the premise of not departing from the technical principle of the utility model, can make a number of improvements and variations, these improvements and variations also should view as the protection range of the utility model.

Claims

1. A hot air circulating vacuum drying oven, comprising a hot air circulation mechanism (02) and a vacuum mechanism (04); characterized in that, It also includes a switching mechanism (01), a filtering mechanism (03), a rotating mechanism (05), and a storage mechanism (06). The hot air circulation mechanism (02) is installed on the switching mechanism (01), the filtering mechanism (03) is installed on the top of the inner wall of the switching mechanism (01), the vacuum mechanism (04) is installed on the top of the switching mechanism (01), the rotating mechanism (05) is installed inside the switching mechanism (01), and the storage mechanism (06) is installed on the rotating mechanism (05). The switching mechanism (01) is easy to open and close, the hot air circulation mechanism (02) dries the workpiece, the filtration mechanism (03) filters the air dried by the hot air circulation mechanism (02) and absorbs water vapor, the vacuum mechanism (04) evacuates the switching mechanism (01), the rotating mechanism (05) drives the placement mechanism (06) to rotate to dry the material in multiple directions, and the placement mechanism (06) facilitates the rapid placement of the material.

2. The hot air circulating vacuum drying oven as described in claim 1, characterized in that, The switching mechanism (01) includes a furnace body (11), a sealing door (12), two fixed ears (13), a rotating plate (14), a threaded rod (15), and a fixing plate (16). The sealing door (12) is mounted on the furnace body (11) by a hinge. Fixed ears (13) are installed on both the furnace body (11) and the sealing door (12). Fixed grooves are provided on the two fixed ears (13). The rotating plate (14) is mounted in the fixing groove of the fixed ear (13) on the sealing door (12) by a rotating shaft. The threaded rod (15) is mounted on the rotating plate (14) by a threaded relationship. The fixing plate (16) is mounted on the other end of the threaded rod (15).

3. A hot air circulating vacuum drying oven as described in claim 2, characterized in that, The hot air circulation mechanism (02) includes a circulation pipe (21), a circulation pump (22), an exhaust hood (23), an insulation box (24), and a heating wire (25). One end of the circulation pipe (21) is installed at the top of the furnace body (11), and the other end of the circulation pipe (21) is installed at the bottom of the furnace body (11). The circulation pump (22) is installed on the circulation pipe (21). The exhaust hood (23) is installed at the bottom inside the furnace body (11). The circulation pipe (21) is connected to the exhaust hood (23). The insulation box (24) is installed on the outer wall of the furnace body (11). The circulation pipe (21) passes through the circulation pipe (21). The heating wire (25) is installed inside the insulation box (24). The heating wire (25) is coiled and installed on the circulation pipe (21).

4. A hot air circulating vacuum drying oven as described in claim 2, characterized in that, The filtration mechanism (03) includes a mounting bracket (31), a water-absorbing filter plate (32), a sliding cylinder (33), a locking rod (34), a guide rod (35), and a spring (36). The mounting bracket (31) is installed at the top inside the furnace body (11). The water-absorbing filter plate (32) is slidably installed inside the mounting bracket (31). The sliding cylinder (33) is installed at the bottom end of the mounting bracket (31). The locking rod (34) is slidably installed inside the sliding cylinder (33). The guide rod (35) is installed on the locking rod (34) and slidably installed on the sliding cylinder (33). One end of the spring (36) is installed on the inner wall of the sliding cylinder (33), and the other end of the spring (36) is installed at the bottom end of the locking rod (34). The water-absorbing filter plate (32) is provided with fixing holes.

5. A hot air circulating vacuum drying oven as described in claim 2, characterized in that, The vacuum mechanism (04) includes a vacuum pump (41) and an extraction pipe (42). The vacuum pump (41) is installed at the top of the furnace body (11), and the extraction pipe (42) connects the vacuum pump (41) to the furnace body (11).

6. A hot air circulating vacuum drying oven as described in claim 2, characterized in that, The rotating mechanism (05) includes a rotating shaft (51) and a rotating motor (52). The rotating shaft (51) is rotatably mounted on the side wall of the furnace body (11) through a sealed bearing. The rotating motor (52) is mounted on the outer wall of the furnace body (11) through a motor frame. The output end of the rotating motor (52) is connected to the rotating shaft (51).

7. A hot air circulating vacuum drying oven as described in claim 6, characterized in that, The storage mechanism (06) includes a storage tube (61), an arc-shaped cover plate (62), a sliding sleeve (63), a U-shaped locking post (64), and a second spring (65). The storage tube (61) is mounted on a rotating shaft (51) and has a storage opening. The arc-shaped cover plate (62) is mounted on the storage tube (61) by a hinge and is located at the storage opening of the storage tube (61). The sliding sleeve (63) is mounted on the outer wall of the storage tube (61). One end of the U-shaped locking post (64) is slidably mounted inside the sliding sleeve (63). The arc-shaped cover plate (62) has a keyhole and the U-shaped locking post (64) can be inserted into the keyhole. The second spring (65) connects the inner wall of the sliding sleeve (63) with the U-shaped locking post (64).

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