Continuous microwave vacuum drying equipment

Abstract

The invention discloses continuous microwave vacuum drying equipment, which belongs to the technical field of microwave drying and comprises a shell and a feeding mechanism for feeding materials to be dried. A rotary disc mechanism for driving the placing disc and materials contained in the placing disc to move and a microwave mechanism for performing microwave vacuum drying on the materials in the placing disc are arranged in the shell; a series of actions such as discharging, feeding, vacuum sealing and drying station switching can be automatically and continuously completed, the core vacuum environment of the drying vacuum cavity does not need to be damaged in the whole process, and transient vacuum pumping and discharging operation is only carried out in the independent containing cavity; a large amount of waiting time caused by frequent vacuum breaking and vacuum pumping of traditional intermittent equipment is eliminated, so that drying operation can be carried out almost uninterruptedly, and the production efficiency and the overall utilization rate of the equipment are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of microwave drying technology, and in particular to a continuous microwave vacuum drying device. Background Technology

[0002] Microwave vacuum drying technology is an advanced drying method that integrates microwave heating and vacuum drying. It combines the advantages of microwave heating (high efficiency and uniformity) and the lower boiling point of water under vacuum conditions, making it particularly suitable for drying heat-sensitive, easily oxidized, or high-value-added materials. However, most existing microwave vacuum drying equipment operates intermittently. That is, after each drying process, the vacuum environment of the drying chamber must be broken, the finished product must be removed, new material must be placed in, and the vacuum must be re-established for the next batch of drying. This operation method results in low production efficiency, high energy consumption due to frequent start-ups and shutdowns of the vacuum system, and repeated depressurization and vacuuming of the drying chamber will affect the equipment life and process stability.

[0003] In the research and development of continuous microwave vacuum drying equipment, the core challenge lies in how to achieve continuous material entry and exit without disrupting the vacuum environment of the drying chamber. Some existing continuous drying equipment attempts to use multi-chamber isolation transfer or airlock devices, but these often suffer from problems such as complex structure, insufficient sealing reliability, inaccurate material transfer, or microwave leakage risk.

[0004] Furthermore, during the material transfer process, the key to ensuring the continuous and stable operation of the equipment lies in how to achieve precise lifting, rotation, and translation of the placement tray between the drying position and the inlet / outlet position, and coordinate it with the vacuum sealing action. The transfer mechanism in existing equipment often relies on multiple independently driven actuators, and the action is connected through complex timing control. This not only increases the difficulty of the control system, but also increases the number of failure points. At the same time, during the drying process, it is often desirable for the material to rotate to achieve more uniform microwave heating, which further increases the complexity of the mechanical transmission design.

[0005] Therefore, there is an urgent need in this field for a microwave vacuum drying device that is compact in structure, reliable in operation, and can truly achieve continuous material feeding and discharging without disrupting the vacuum of the drying chamber. This device integrates multiple functions such as feeding, discharging, sealing, transfer, and material rotation into a few power sources, which are automatically completed in a preset sequence. This improves drying efficiency, reduces energy consumption, ensures drying quality, and simplifies equipment operation and control. Summary of the Invention

[0006] To address the aforementioned technical problems, the present invention adopts the following technical solution: a continuous microwave vacuum drying device, comprising a shell and an infeeding mechanism for placing materials to be dried into the shell, wherein the shell is provided with a turntable mechanism for moving the placement tray and the materials contained therein, and a microwave mechanism for performing microwave vacuum drying on the materials in the placement tray. The placement mechanism includes a lower moving rod and a transverse sliding column. Two lower rack rods are slidably mounted on the lower moving rod, and a lower ratchet rack is fixedly mounted on the lower rack rod. A drying vacuum chamber and a placement chamber are provided inside the outer shell. A fixed plate is fixedly mounted in the placement chamber. A circular hole is provided on the fixed plate to connect the drying vacuum chamber and the placement chamber. A sealing sleeve is slidably mounted vertically in the circular hole.

[0007] Furthermore, the insertion mechanism also includes an inner electric cylinder fixedly installed inside the housing, a lower moving rod fixedly installed on the output end of the inner electric cylinder, a lower spring provided between the lower ratchet and the lower moving rod, an upper moving rod fixedly installed on the lower moving rod, two upper rack rods slidably installed on the upper moving rod, an upper ratchet fixedly installed on the upper rack rod, and an upper spring provided between the upper ratchet and the upper moving rod.

[0008] Furthermore, the placement mechanism also includes a vertical electric cylinder fixedly installed in the dry vacuum chamber, a sealing sleeve fixedly installed with the output end of the vertical electric cylinder, sealing rings provided above and below the sealing sleeve, and an upper sliding column fixedly installed on the sealing sleeve, which slides in the placement chamber.

[0009] Furthermore, the insertion mechanism also includes an upper slide frame fixedly mounted on the lower moving rod. The upper slide frame is slidably mounted with the transverse sliding column. A fixing ring is fixedly mounted on the transverse sliding column, and a transverse spring is provided between the fixing ring and the upper slide frame.

[0010] Furthermore, the placement mechanism also includes a rotating fork column rotatably installed in the placement cavity, a rotating fork ratchet fixedly installed below the rotating fork column, a rotating retrieval fork fixedly installed on the rotating fork column, and two placement forks provided on the rotating retrieval fork.

[0011] When in use, after the opening door is opened, the vertical electric cylinder is in the extended state, the top of the sealing sleeve contacts the upper sealing cover, and the placement tray containing the material to be dried is placed on the fixed tray. The placement tray is located in the placement fork of the rotating pick-up fork, and then the opening door is closed.

[0012] The inner electric cylinder retracts, driving the lower moving rod, upper moving rod, and upper slide to move. When the upper ratchet rack contacts the rotating fork ratchet, the upper ratchet rack drives the rotating fork ratchet, rotating fork post, and rotating pick-up fork to rotate 180 degrees. At this time, the vertical electric cylinder is in the retracted state, and the upper surface of the sealing sleeve is below the fixed plate. At this time, the inner placement fork moves the placement tray containing the dried material to the opening door, and the outer placement fork moves the placement tray containing the material to be dried to below the upper sealing cover.

[0013] Furthermore, the turntable mechanism includes a transfer column rotatably mounted inside the housing, a transfer disk fixedly mounted on the transfer column, a transfer ratchet fixedly mounted on the transfer column, the transfer ratchet meshing with a lower ratchet rack, and four fixed columns fixedly mounted inside the drying vacuum chamber, with fixed gears fixedly mounted on the fixed columns.

[0014] Furthermore, the turntable mechanism also includes four gear frames fixedly installed on the transfer plate. The gear frames mesh with fixed gears. A rotating gear is rotatably installed on the gear frame. A lifting column is provided inside the rotating gear. A vertical sliding groove is provided on the lifting column. A protrusion is provided inside the rotating gear. The protrusion inside the rotating gear is located in the vertical sliding groove. A lifting plate is fixedly installed on the lifting column.

[0015] Furthermore, the turntable mechanism also includes two sealing bushings fixedly installed on the partition between the drying vacuum chamber and the placement chamber, a transverse sliding column is slidably installed in the sealing bushings, a lifting trapezoidal block is fixedly installed on the top of the transverse sliding column, and a slope is provided on the lifting trapezoidal block.

[0016] When the internal electric cylinder retracts, although the lower ratchet engages with the transfer ratchet, it cannot drive the transfer ratchet to rotate when it slides. The lower rack slides relative to the lower moving rod, and the lower spring is compressed. After the lower ratchet passes the transfer ratchet, the lower spring rebounds and resets. At the same time, the upper slide pushes the fixed ring and the lateral sliding column to move through the lateral spring. At this time, the lateral spring is not compressed, and the lateral sliding column moves along the sealing bushing. It lifts the lifting column and lifting plate located in front of the lifting trapezoidal block through the slope on the lifting trapezoidal block. At this time, the lifting plate lifts the placement tray containing the dried material. The placement tray reaches the raised sealing sleeve, and the top of the placement tray contacts the upper sealing cover. At this time, the upper surface of the lifting plate is flush with the upper surface of the fixed plate. The sealing sleeve is located in the placement fork of the rotating pick-up fork.

[0017] At this point, the upper ratchet rack has not yet contacted the rotating fork ratchet. Subsequently, the inner electric cylinder continues to retract. Since the lifting trapezoidal block and the lateral sliding column can no longer move, the upper slide begins to slide along the lateral sliding column. The lateral spring is compressed, the vertical electric cylinder retracts, and the sealing sleeve descends, causing the sealing sleeve to descend below the fixed plate. When the upper ratchet rack contacts the rotating fork ratchet, it drives the rotating fork ratchet, rotating fork column, and rotating pick-up fork to rotate 180 degrees.

[0018] Subsequently, the inner electric cylinder extends. At this time, the upper ratchet engages with the rotating fork ratchet but does not drive the rotating fork ratchet to rotate. The upper rack slides relative to the upper moving rod, and the upper spring is compressed. When the upper ratchet disengages from the rotating fork ratchet, the upper spring returns to its original position. When the upper slide contacts the end of the lateral sliding column, the upper slide moves together with the lateral sliding column and the lifting trapezoidal block. The lifting trapezoidal block moves away from below the lifting column, and the lifting plate and lifting column descend under the action of gravity. Then, the vertical electric cylinder extends, causing the sealing sleeve to rise. The top of the sealing sleeve contacts the upper sealing cover. At this time, the drying vacuum chamber is in a completely closed state, and a vacuum is drawn into the drying vacuum chamber. Then, the inner electric cylinder continues to extend, and the lower ratchet drives the transfer ratchet, transfer rotating column, and transfer plate to rotate 90 degrees. The transfer plate drives the four lifting columns, lifting plates, and placement plates to move. When the transfer plate rotates, the fixed gear drives the gear frame, lifting columns, lifting plates, and placement plates to rotate. The material in the vacuum drying chamber is dried by the microwave dryer.

[0019] When the inner electric cylinder retracts, a vacuum is drawn into the placement chamber. The sealing sleeve first rises to the top and contacts the upper sealing cover. This first lifts the trapezoidal block, which in turn lifts the lifting column, lifting plate, and placement tray below the sealing sleeve, making the upper surface of the lifting plate flush with the upper surface of the fixed plate. Then, the sealing sleeve descends below the fixed plate. Subsequently, the upper ratchet rack drives the rotating fork ratchet, rotating fork column, and rotating pick-up fork to rotate 180 degrees, causing the next placement tray containing the material to be dried to move below the upper sealing cover, while the placement tray containing the dried material moves to the side of the opening door. Then, the sealing sleeve rises to the top and contacts the upper sealing cover. Finally, the inner electric cylinder extends, first lifting the trapezoidal block away from the lifting column. Below, the lifting column and lifting plate lower the placement tray containing the material to be dried. Then, the lower ratchet drives the transfer ratchet, transfer column, and transfer tray to rotate 90 degrees, drying the material in the placement tray through the microwave dryer. The dried material reaches below the sealing sleeve, at which point the vacuum in the placement chamber is released. Since the sealing sleeve and upper sealing cover separate the drying vacuum chamber from the placement chamber, the vacuum in the drying vacuum chamber will not be broken. Then, the opening door is opened to remove the dried material, and the next material to be dried is placed in. Then, the opening door is closed, and the placement chamber is evacuated. Throughout the entire process, the drying vacuum chamber is in a vacuum state.

[0020] Furthermore, the microwave mechanism includes a microwave dryer fixedly installed on the outer shell, the microwave dryer being located above the drying vacuum chamber, a vacuum machine fixedly installed inside the outer shell, a rear valve fixedly installed on the drying vacuum chamber, a front valve fixedly installed on the placement chamber, the vacuum machine being connected to the rear valve and the front valve respectively by pipes, and an upper sealing cover fixedly installed inside the placement chamber, the upper sealing cover being located above the circular hole of the fixed plate.

[0021] Furthermore, the microwave mechanism also includes an opening door rotatably mounted on the outer casing, with a sealing ring provided on the inner side of the opening door. Two opening frames are fixedly installed inside the placement cavity, and an opening electric cylinder is rotatably mounted on the opening frame. The output end of the opening electric cylinder is rotatably mounted to the opening door.

[0022] The vacuum chamber and the placement chamber are evacuated by a vacuum machine. When the opening door needs to be opened, ensure that the sealing sleeve is in the raised state and that the top of the sealing sleeve is in contact with the lower surface of the upper sealing cover. Release the vacuum state in the placement chamber, and the opening electric cylinder extends to drive the opening door to rotate relative to the outer shell, so that the opening door opens.

[0023] The beneficial effects of this invention compared with the prior art are: (1) This invention can automatically and continuously complete a series of actions such as material discharge, material feeding, vacuum sealing and drying station conversion. The whole process does not require destroying the core vacuum environment of the drying vacuum chamber. Only a short vacuuming operation is performed in the independent placement chamber. This eliminates the large amount of waiting time caused by frequent vacuuming and vacuuming in traditional intermittent equipment, so that the drying operation can be carried out almost uninterrupted, which greatly improves production efficiency and overall equipment utilization; (2) The placement mechanism set in this invention converts linear motion into expected intermittent rotation, lifting and linear compensation motion through mechanical components such as lower ratchet, upper ratchet, lateral sliding column and spring. The reciprocating motion of an internal electric cylinder drives the turntable and pick-and-place fork to rotate precisely through the ratchet mechanism, and lifts the plate by lifting the trapezoidal block. Automatic lifting improves the stability of long-term operation of the equipment; (3) The present invention drives the placement plate to rotate while revolving through the meshing of the fixed gear and the gear frame in the turntable mechanism, so that the material can be uniformly irradiated by microwaves, effectively avoiding the problem of local overheating or uneven drying, and improving the consistency of drying quality. Since the drying vacuum chamber is kept in a vacuum state throughout the process except for maintenance, it avoids the oxidation, contamination or quality deterioration that may occur due to repeated contact with air in traditional intermittent operation; (4) The present invention forms a dynamic sealing valve by using a liftable sealing sleeve and a fixed upper sealing cover, which cleverly separates the drying vacuum chamber from the placement chamber. When feeding or discharging materials, only the relatively small placement chamber needs to be evacuated or emptied, while the main drying chamber is always kept in vacuum. This greatly reduces the load and energy consumption of the vacuum system and shortens the auxiliary operation time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention (internal).

[0026] Figure 3 This is a schematic diagram of the mechanism structure of the present invention. Figure 1 .

[0027] Figure 4 This is a schematic diagram of the mechanism structure of the present invention. Figure 2 .

[0028] Figure 5 This is a schematic diagram of the mechanism structure of the present invention. Figure 3 .

[0029] Figure 6 This is a schematic diagram of the turntable mechanism of the present invention. Figure 1 .

[0030] Figure 7 This is a schematic diagram of the turntable mechanism of the present invention. Figure 2 .

[0031] Figure 8 This is a schematic diagram of the turntable mechanism of the present invention. Figure 3 .

[0032] Figure 9 This is a schematic diagram of the turntable mechanism of the present invention. Figure 4 .

[0033] Figure 10 This is a schematic diagram of the microwave mechanism structure of the present invention.

[0034] Reference numerals: 101-Outer shell; 102-Inner electric cylinder; 103-Lower moving rod; 104-Lower ratchet rack; 105-Lower rack rod; 106-Lower spring; 107-Upper slide; 108-Upper moving rod; 109-Upper ratchet rack; 110-Upper rack rod; 111-Upper spring; 112-Fixed plate; 113-Rotating fork; 114-Rotating fork column; 115-Rotating fork ratchet; 116-Transverse sliding column; 117-Transverse spring; 118-Fixed ring; 119-Upright electric cylinder; 120-Sealing sleeve; 121-Sealing ring; 122-Upper sliding column; 12 3-Drying vacuum chamber; 124-Placement chamber; 201-Transfer rotating column; 202-Transfer ratchet; 203-Sealing bushing; 204-Lifting trapezoidal block; 205-Transfer tray; 206-Fixing column; 207-Fixing gear; 208-Gear frame; 209-Rotating gear; 210-Lifting column; 211-Lifting tray; 212-Vertical slide; 301-Microwave dryer; 302-Rear valve; 303-Front valve; 304-Upper sealing cover; 305-Opening door; 306-Opening frame; 307-Opening electric cylinder; 308-Vacuum machine; 4-Placement tray. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0036] Example: Reference Figures 1-10A continuous microwave vacuum drying device includes a housing 101 and an insertion mechanism for placing materials to be dried into the housing 101. The housing 101 is provided with a turntable mechanism for moving the placement tray 4 and the materials contained therein, and a microwave mechanism for performing microwave vacuum drying on the materials in the placement tray 4. The placement mechanism includes a lower moving rod 103 and a transverse sliding column 116. Two lower rack rods 105 are slidably mounted on the lower moving rod 103, and a lower ratchet rack 104 is fixedly mounted on the lower rack rod 105. A drying vacuum chamber 123 and a placement chamber 124 are provided inside the outer shell 101. A fixed plate 112 is fixedly mounted inside the placement chamber 124. A circular hole is provided on the fixed plate 112 to connect the drying vacuum chamber 123 and the placement chamber 124. A sealing sleeve 120 is slidably mounted vertically inside the circular hole.

[0037] like Figures 3-5 As shown, the insertion mechanism also includes an inner electric cylinder 102 fixedly installed inside the housing 101, a lower moving rod 103 fixedly installed on the output end of the inner electric cylinder 102, a lower spring 106 provided between the lower ratchet rack 104 and the lower moving rod 103, an upper moving rod 108 fixedly installed on the lower moving rod 103, two upper rack rods 110 slidably installed on the upper moving rod 108, an upper ratchet rack 109 fixedly installed on the upper rack rod 110, and an upper spring 111 provided between the upper ratchet rack 109 and the upper moving rod 108.

[0038] like Figures 3-5 As shown, the placement mechanism also includes a vertical electric cylinder 119 fixedly installed in the dry vacuum chamber 123. The sealing sleeve 120 is fixedly installed with the output end of the vertical electric cylinder 119. Sealing rings 121 are provided on both the upper and lower sides of the sealing sleeve 120. An upper sliding column 122 is fixedly installed on the sealing sleeve 120 and slides in the placement chamber 124.

[0039] like Figures 3-5 As shown, the insertion mechanism also includes an upper slide 107 fixedly installed on the lower moving rod 103. The upper slide 107 is slidably installed with the transverse sliding column 116. A fixing ring 118 is fixedly installed on the transverse sliding column 116, and a transverse spring 117 is provided between the fixing ring 118 and the upper slide 107.

[0040] like Figures 3-5 As shown, the placement mechanism also includes a rotating fork column 114 rotatably installed in the placement cavity 124. A rotating fork ratchet 115 is fixedly installed below the rotating fork column 114, and a rotating pick-up fork 113 is fixedly installed on the rotating fork column 114. Two placement forks are provided on the rotating pick-up fork 113.

[0041] When in use, after the opening door 305 is opened, the vertical electric cylinder 119 is in the extended state, the top of the sealing sleeve 120 contacts the upper sealing cover 304, and the placement tray 4 containing the material to be dried is placed on the fixed tray 112. The placement tray 4 is located in the placement fork of the rotating pick-up fork 113, and then the opening door 305 is closed.

[0042] The inner electric cylinder 102 retracts, driving the lower moving rod 103, the upper moving rod 108, and the upper slide 107 to move. When the upper ratchet 109 contacts the rotating fork ratchet 115, the upper ratchet 109 drives the rotating fork ratchet 115, the rotating fork column 114, and the rotating pick-up fork 113 to rotate 180 degrees. At this time, the vertical electric cylinder 119 is in the retracted state, and the upper surface of the sealing sleeve 120 is below the fixed plate 112. At this time, the inner placement fork moves the placement tray 4 containing the dried material to the opening door 305, and the outer placement fork moves the placement tray 4 containing the material to be dried to below the upper sealing cover 304.

[0043] like Figures 6-9 As shown, the turntable mechanism includes a transfer column 201 rotatably mounted inside the housing 101, a transfer disk 205 fixedly mounted on the transfer column 201, a transfer ratchet 202 fixedly mounted on the transfer column 201, the transfer ratchet 202 meshing with the lower ratchet rack 104, and four fixed columns 206 fixedly mounted inside the drying vacuum chamber 123, with fixed gears 207 fixedly mounted on the fixed columns 206.

[0044] like Figures 6-9 As shown, the turntable mechanism also includes four gear carriers 208 fixedly mounted on the transfer plate 205. The gear carriers 208 mesh with the fixed gears 207. A rotating gear 209 is rotatably mounted on the gear carriers 208. A lifting column 210 is provided inside the rotating gear 209. A vertical sliding groove 212 is provided on the lifting column 210. A protrusion is provided inside the rotating gear 209. The protrusion inside the rotating gear 209 is located in the vertical sliding groove 212. A lifting plate 211 is fixedly mounted on the lifting column 210.

[0045] like Figures 6-9 As shown, the turntable mechanism also includes two sealing bushings 203 fixedly installed on the partition between the drying vacuum chamber 123 and the placement chamber 124. The transverse sliding column 116 is slidably installed in the sealing bushing 203. A lifting trapezoidal block 204 is fixedly installed on the top of the transverse sliding column 116. The lifting trapezoidal block 204 is provided with a slope.

[0046] When the internal electric cylinder 102 retracts, although the lower ratchet 104 engages with the transfer ratchet 202, it cannot drive the transfer ratchet 202 to rotate when it slides. The lower rack 105 slides relative to the lower moving rod 103, and the lower spring 106 is compressed. After the lower ratchet 104 passes the transfer ratchet 202, the lower spring 106 returns to its original position. Simultaneously, the upper slide 107 pushes the fixed ring 118 and the lateral sliding column 116 to move via the lateral spring 117. At this time, the lateral spring 117 is not compressed. The lateral sliding column 116 moves along the sealing bushing 203 and lifts the lifting column 210 and lifting plate 211 located in front of the lifting trapezoidal block 204 by the slope on the lifting trapezoidal block 204. At this time, the lifting plate 211 lifts the placement tray 4 containing the dried material. The placement tray 4 passes through and reaches the raised sealing sleeve 120. The top of the placement tray 4 contacts the upper sealing cover 304. At this time, the upper surface of the lifting plate 211 is flush with the upper surface of the fixed plate 112. At this time, the sealing sleeve 120 is located in the placement fork of the rotating pick-up fork 113.

[0047] At this time, the upper ratchet 109 has not yet contacted the rotating fork ratchet 115. Subsequently, the inner electric cylinder 102 continues to retract. Since the lifting trapezoidal block 204 and the lateral sliding column 116 can no longer move, the upper slide 107 begins to slide along the lateral sliding column 116. The lateral spring 117 is compressed, the vertical electric cylinder 119 retracts, and the sealing sleeve 120 descends, causing the sealing sleeve 120 to descend below the fixed plate 112. When the upper ratchet 109 contacts the rotating fork ratchet 115, it drives the rotating fork ratchet 115, the rotating fork column 114, and the rotating pick-up fork 113 to rotate 180 degrees.

[0048] Subsequently, the inner electric cylinder 102 extends. At this time, the upper ratchet 109 engages with the rotating fork ratchet 115 but does not drive the rotating fork ratchet 115 to rotate. The upper rack 110 slides relative to the upper moving rod 108, and the upper spring 111 is compressed. When the upper ratchet 109 disengages from the rotating fork ratchet 115, the upper spring 111 returns to its original position. When the upper slide 107 contacts the end of the lateral sliding column 116, the upper slide 107 moves together with the lateral sliding column 116 and the lifting trapezoidal block 204. The lifting trapezoidal block 204 moves away from below the lifting column 210, and the lifting plate 211 and the lifting column 210 descend under the action of gravity. Then, the vertical electric cylinder 119 extends, causing the sealing sleeve 120 to... As the material rises, the top of the sealing sleeve 120 contacts the upper sealing cover 304, at which point the drying vacuum chamber 123 is completely sealed, and a vacuum is drawn into the drying vacuum chamber 123. Subsequently, the inner electric cylinder 102 continues to extend, and the lower ratchet rack 104 drives the transfer ratchet 202, the transfer column 201, and the transfer disk 205 to rotate 90 degrees. The transfer disk 205 drives the four lifting columns 210, the lifting plate 211, and the placement plate 4 to move. When the transfer disk 205 rotates, the fixed gear 207 drives the gear frame 208, the lifting columns 210, the lifting plate 211, and the placement plate 4 to rotate, and the material in the vacuum drying chamber 123 is dried by the microwave dryer 301.

[0049] When the inner electric cylinder 102 retracts, a vacuum is drawn into the placement cavity 124. The sealing sleeve 120 first rises to the top and contacts the upper sealing cover 304. This first lifts the trapezoidal block 204, which in turn lifts the lifting column 210, lifting plate 211, and placement tray 4 below the sealing sleeve 120, making the upper surface of the lifting plate 211 flush with the upper surface of the fixed plate 112. Then, the sealing sleeve 120 descends below the fixed plate 112. Subsequently, the upper ratchet 109 drives the rotating fork ratchet 115, rotating fork column 114, and rotating pick-up fork 113 to rotate 180 degrees, causing the next placement tray 4 containing material to be dried to move below the upper sealing cover 304, while the placement tray 4 containing dried material moves to the side of the opening door 305. Then, the sealing sleeve 120 rises to the top and contacts the upper sealing cover 304. Finally, the inner electric cylinder 102 extends, first lifting the trapezoidal block 204. After leaving the area below the lifting column 210, the lifting column 210 and the lifting plate 211 lower the placement tray 4 containing the material to be dried. Then, the lower ratchet 104 drives the transfer ratchet 202, the transfer column 201, and the transfer plate 205 to rotate 90 degrees. The microwave dryer 301 dries the material in the placement tray 4, so that the dried material reaches below the sealing sleeve 120. At this time, the vacuum state in the placement chamber 124 is released. Since the sealing sleeve 120 and the upper sealing cover 304 separate the drying vacuum chamber 123 from the placement chamber 124, the vacuum in the drying vacuum chamber 123 will not be broken. Then, the opening door 305 is opened to take out the dried material and put in the next material to be dried. Then, the opening door 305 is closed, and the vacuum in the placement chamber 124 is evacuated. Throughout the entire process, the drying vacuum chamber 123 is in a vacuum state.

[0050] like Figure 10 As shown, the microwave mechanism includes a microwave dryer 301 fixedly installed on the outer casing 101. The microwave dryer 301 is located above the drying vacuum chamber 123. A vacuum machine 308 is fixedly installed inside the outer casing 101. A rear valve 302 is fixedly installed on the drying vacuum chamber 123. A front valve 303 is fixedly installed on the placement chamber 124. The vacuum machine 308 is connected to the rear valve 302 and the front valve 303 by pipes. An upper sealing cover 304 is fixedly installed inside the placement chamber 124. The upper sealing cover 304 is located above the circular hole of the fixed plate 112.

[0051] like Figure 10 As shown, the microwave mechanism also includes an opening door 305 rotatably mounted on the housing 101. A sealing ring is provided on the inner side of the opening door 305. Two opening frames 306 are fixedly installed in the placement cavity 124. An opening electric cylinder 307 is rotatably mounted on the opening frame 306. The output end of the opening electric cylinder 307 is rotatably mounted with the opening door 305.

[0052] Vacuum is drawn into the drying vacuum chamber 123 and the placement chamber 124 by vacuum machine 308. When it is necessary to open the opening door 305, ensure that the sealing sleeve 120 is in the raised state and that the top of the sealing sleeve 120 is in contact with the lower surface of the upper sealing cover 304 to release the vacuum state in the placement chamber 124. The opening electric cylinder 307 extends and drives the opening door 305 to rotate relative to the outer shell 101, so that the opening door 305 opens.

[0053] The working principle of the continuous microwave vacuum drying equipment disclosed in this invention is as follows: A vacuum chamber 308 evacuates the drying vacuum chamber 123 and the placement chamber 124. When the opening door 305 needs to be opened, the sealing sleeve 120 is ensured to be in the raised state, with the top of the sealing sleeve 120 in contact with the lower surface of the upper sealing cover 304, releasing the vacuum in the placement chamber 124. The electric cylinder 307 extends, causing the opening door 305 to rotate relative to the outer casing 101, thus opening the opening door 305. The placement tray 4 containing the material to be dried is placed on the fixed tray 112, with the placement tray 4 positioned in the placement fork of the rotating pick-up fork 113. The opening door 305 is then closed.

[0054] When the internal electric cylinder 102 retracts, although the lower ratchet 104 engages with the transfer ratchet 202, it cannot drive the transfer ratchet 202 to rotate when it slides. The lower rack 105 slides relative to the lower moving rod 103, and the lower spring 106 is compressed. After the lower ratchet 104 passes the transfer ratchet 202, the lower spring 106 returns to its original position. Simultaneously, the upper slide 107 pushes the fixed ring 118 and the lateral sliding column 116 to move via the lateral spring 117. At this time, the lateral spring 117 is not compressed. The lateral sliding column 116 moves along the sealing bushing 203 and lifts the lifting column 210 and lifting plate 211 located in front of the lifting trapezoidal block 204 by the slope on the lifting trapezoidal block 204. At this time, the lifting plate 211 lifts the placement tray 4 containing the dried material. The placement tray 4 passes through and reaches the raised sealing sleeve 120. The top of the placement tray 4 contacts the upper sealing cover 304. At this time, the upper surface of the lifting plate 211 is flush with the upper surface of the fixed plate 112. At this time, the sealing sleeve 120 is located in the placement fork of the rotating pick-up fork 113.

[0055] At this time, the upper ratchet 109 has not yet contacted the rotating fork ratchet 115. Subsequently, the inner electric cylinder 102 continues to retract. Since the lifting trapezoidal block 204 and the lateral sliding column 116 can no longer move, the upper slide 107 begins to slide along the lateral sliding column 116. The lateral spring 117 is compressed, and the vertical electric cylinder 119 retracts, causing the sealing sleeve 120 to descend, so that the sealing sleeve 120 descends below the fixed plate 112. When the upper ratchet 109 contacts the rotating fork ratchet 115, it drives the rotating fork ratchet 115, the rotating fork column 114, and the rotating pick-up fork 113 to rotate 180 degrees. At this time, the inner placement fork moves the placement tray 4 containing the dried material to the opening door 305, and the outer placement fork moves the placement tray 4 containing the material to be dried to below the upper sealing cover 304.

[0056] Subsequently, the inner electric cylinder 102 extends. At this time, the upper ratchet 109 engages with the rotating fork ratchet 115 but does not drive the rotating fork ratchet 115 to rotate. The upper rack 110 slides relative to the upper moving rod 108, and the upper spring 111 is compressed. When the upper ratchet 109 disengages from the rotating fork ratchet 115, the upper spring 111 returns to its original position. When the upper slide 107 contacts the end of the lateral sliding column 116, the upper slide 107 moves together with the lateral sliding column 116 and the lifting trapezoidal block 204. The lifting trapezoidal block 204 moves away from below the lifting column 210, and the lifting plate 211 and the lifting column 210 descend under the action of gravity. Then, the vertical electric cylinder 119 extends, causing the sealing sleeve 120 to... As the material rises, the top of the sealing sleeve 120 contacts the upper sealing cover 304, at which point the drying vacuum chamber 123 is completely sealed, and a vacuum is drawn into the drying vacuum chamber 123. Subsequently, the inner electric cylinder 102 continues to extend, and the lower ratchet rack 104 drives the transfer ratchet 202, the transfer column 201, and the transfer disk 205 to rotate 90 degrees. The transfer disk 205 drives the four lifting columns 210, the lifting plate 211, and the placement plate 4 to move. When the transfer disk 205 rotates, the fixed gear 207 drives the gear frame 208, the lifting columns 210, the lifting plate 211, and the placement plate 4 to rotate, and the material in the vacuum drying chamber 123 is dried by the microwave dryer 301.

[0057] When the inner electric cylinder 102 retracts, a vacuum is drawn into the placement cavity 124. The sealing sleeve 120 first rises to the top and contacts the upper sealing cover 304. This first lifts the trapezoidal block 204, which in turn lifts the lifting column 210, lifting plate 211, and placement tray 4 below the sealing sleeve 120, making the upper surface of the lifting plate 211 flush with the upper surface of the fixed plate 112. Then, the sealing sleeve 120 descends below the fixed plate 112. Subsequently, the upper ratchet 109 drives the rotating fork ratchet 115, rotating fork column 114, and rotating pick-up fork 113 to rotate 180 degrees, causing the next placement tray 4 containing material to be dried to move below the upper sealing cover 304, while the placement tray 4 containing dried material moves to the side of the opening door 305. Then, the sealing sleeve 120 rises to the top and contacts the upper sealing cover 304. Finally, the inner electric cylinder 102 extends, first lifting the trapezoidal block 204. After leaving the area below the lifting column 210, the lifting column 210 and the lifting plate 211 lower the placement tray 4 containing the material to be dried. Then, the lower ratchet 104 drives the transfer ratchet 202, the transfer column 201, and the transfer plate 205 to rotate 90 degrees. The microwave dryer 301 dries the material in the placement tray 4, so that the dried material reaches below the sealing sleeve 120. At this time, the vacuum state in the placement chamber 124 is released. Since the sealing sleeve 120 and the upper sealing cover 304 separate the drying vacuum chamber 123 from the placement chamber 124, the vacuum in the drying vacuum chamber 123 will not be broken. Then, the opening door 305 is opened to take out the dried material and put in the next material to be dried. Then, the opening door 305 is closed, and the vacuum in the placement chamber 124 is evacuated. Throughout the entire process, the drying vacuum chamber 123 is in a vacuum state.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A continuous microwave vacuum drying apparatus, comprising a housing (101) and an insertion mechanism for inserting a container holding material to be dried, characterized in that: The outer shell (101) is provided with a turntable mechanism for moving the placement tray (4) and the material contained therein, and a microwave mechanism for microwave vacuum drying of the material in the placement tray (4). The placement mechanism includes a lower moving rod (103) and a transverse sliding column (116). Two lower rack rods (105) are slidably mounted on the lower moving rod (103), and a lower ratchet rack (104) is fixedly mounted on the lower rack rods (105). A drying vacuum chamber (123) and a placement chamber (124) are provided inside the outer shell (101). A fixed plate (112) is fixedly mounted inside the placement chamber (124). A circular hole is provided on the fixed plate (112) to connect the drying vacuum chamber (123) and the placement chamber (124). A sealing sleeve (120) is slidably mounted vertically inside the circular hole.

2. The continuous microwave vacuum drying equipment according to claim 1, characterized in that: The insertion mechanism also includes an inner electric cylinder (102) fixedly installed inside the outer casing (101), a lower moving rod (103) fixedly installed on the output end of the inner electric cylinder (102), a lower spring (106) provided between the lower ratchet (104) and the lower moving rod (103), an upper moving rod (108) fixedly installed on the lower moving rod (103), two upper rack rods (110) slidably installed on the upper moving rod (108), an upper ratchet (109) fixedly installed on the upper rack rod (110), and an upper spring (111) provided between the upper ratchet (109) and the upper moving rod (108).

3. The continuous microwave vacuum drying equipment according to claim 2, characterized in that: The placement mechanism also includes a vertical electric cylinder (119) fixedly installed in the dry vacuum chamber (123), a sealing sleeve (120) fixedly installed at the output end of the vertical electric cylinder (119), a sealing ring (121) is provided above and below the sealing sleeve (120), and an upper sliding column (122) is fixedly installed on the sealing sleeve (120), which slides in the placement chamber (124).

4. The continuous microwave vacuum drying equipment according to claim 3, characterized in that: The insertion mechanism also includes an upper slide (107) fixedly installed on the lower moving rod (103). The upper slide (107) is slidably installed with the transverse sliding column (116). A fixing ring (118) is fixedly installed on the transverse sliding column (116). A transverse spring (117) is provided between the fixing ring (118) and the upper slide (107).

5. A continuous microwave vacuum drying apparatus according to claim 4, characterized in that: The placement mechanism also includes a rotating fork column (114) rotatably installed in the placement cavity (124), a rotating fork ratchet (115) fixedly installed below the rotating fork column (114), a rotating pick-up fork (113) fixedly installed on the rotating fork column (114), and two placement forks provided on the rotating pick-up fork (113).

6. The continuous microwave vacuum drying equipment according to claim 1, characterized in that: The turntable mechanism includes a transfer column (201) rotatably mounted inside the housing (101), a transfer disk (205) fixedly mounted on the transfer column (201), a transfer ratchet (202) fixedly mounted on the transfer column (201), the transfer ratchet (202) meshing with the lower ratchet rack (104), and four fixed columns (206) fixedly mounted inside the drying vacuum chamber (123), with fixed gears (207) fixedly mounted on the fixed columns (206).

7. A continuous microwave vacuum drying apparatus according to claim 6, characterized in that: The turntable mechanism also includes four gear racks (208) fixedly installed on the transfer plate (205). The gear racks (208) mesh with the fixed gears (207). A rotating gear (209) is rotatably installed on the gear rack (208). A lifting column (210) is provided inside the rotating gear (209). A vertical slide groove (212) is provided on the lifting column (210). A protrusion is provided inside the rotating gear (209). The protrusion inside the rotating gear (209) is located in the vertical slide groove (212). A lifting plate (211) is fixedly installed on the lifting column (210).

8. A continuous microwave vacuum drying apparatus according to claim 7, characterized in that: The turntable mechanism also includes two sealing bushings (203) fixedly installed on the partition between the drying vacuum chamber (123) and the placement chamber (124). A transverse sliding column (116) is slidably installed in the sealing bushings (203). A lifting trapezoidal block (204) is fixedly installed on the top of the transverse sliding column (116). A slope is provided on the lifting trapezoidal block (204).

9. A continuous microwave vacuum drying apparatus according to claim 1, characterized in that: The microwave mechanism includes a microwave dryer (301) fixedly installed on the outer shell (101). The microwave dryer (301) is located above the drying vacuum chamber (123). A vacuum machine (308) is fixedly installed inside the outer shell (101). A rear valve (302) is fixedly installed on the drying vacuum chamber (123). A front valve (303) is fixedly installed on the placement chamber (124). The vacuum machine (308) is connected to the rear valve (302) and the front valve (303) by pipes. An upper sealing cover (304) is fixedly installed inside the placement chamber (124). The upper sealing cover (304) is located above the circular hole of the fixed plate (112).

10. A continuous microwave vacuum drying apparatus according to claim 9, characterized in that: The microwave mechanism also includes an opening door (305) rotatably mounted on the outer shell (101). A sealing ring is provided on the inner side of the opening door (305). Two opening frames (306) are fixedly installed in the placement cavity (124). An opening electric cylinder (307) is rotatably mounted on the opening frame (306). The output end of the opening electric cylinder (307) is rotatably mounted with the opening door (305).

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