Negative-pressure low-temperature drying equipment

Abstract

The negative-pressure low-temperature drying equipment comprises a cabinet body, a sealing door is hinged to the front side wall of the cabinet body through a hinge, a plurality of heating plates are arranged on the inner side wall of the cabinet body, a drawing plate is slidably connected to the lower side of the interior of the cabinet body, and a supporting frame is rotatably connected to the front side of the drawing plate through a rotating shaft; the upper side of the supporting frame is rotationally connected with a rotary drying device for conducting rotary drying on materials through a rotating shaft, two inclined driving devices for driving the rotary drying device are arranged on the rear side of the rotary drying device, and the inclined driving devices are arranged on the rear side of the interior of the cabinet body in a bilateral symmetry mode. The rotary drying device comprises a first rotary disc, a second rotary disc, a rotary rod, a rotary frame, a spring plunger, a material frame and an auxiliary roller. By means of the mode, materials can be continuously and evenly heated, water vapor in the cabinet body can be evenly absorbed, and the material frame can be rapidly locked to be taken and placed.

Description

Technical Field

[0001] The invention relates to the technical field of material drying, in particular to negative pressure low-temperature drying equipment. Background Art

[0002] Negative pressure low temperature drying equipment is a new type of efficient energy-saving drying equipment. It uses a vacuum pump to extract air and moisture to form a negative pressure state in the working room of the equipment. Under negative pressure environment, the boiling point of water will decrease, and the moisture in the material can be quickly vaporized and evaporated at a lower temperature, thereby achieving the purpose of drying. At the same time, drying the material at low temperature can avoid problems such as deterioration and decomposition caused by high temperature, and is particularly suitable for processing heat-sensitive materials.

[0003] Chinese patent CN221705969U proposes a low-temperature negative pressure drying device for wet materials, including a centrifugal box, a plurality of protrusions are fixedly arranged on the inner wall of the inner cavity of the centrifugal box, a feed pipe is fixedly arranged on one side of the centrifugal box, a first conical hole is opened on one side of the feed pipe, and a second conical hole is opened on the other side, a hot air pipe is fixedly arranged on one side of the centrifugal box, the hot air pipe is located below the feed pipe, a third conical hole is opened on one side of the hot air pipe, and a fourth conical hole is opened on the other side, a discharge pipe, a fixed sleeve It is arranged on the centrifugal box, the bottom end of the discharge pipe extends into the inner cavity of the centrifugal box, and the top end of the discharge pipe extends to the outside of the centrifugal box. The hot air blower is arranged at the hot air pipe. The taper of the second conical hole is greater than the taper of the first conical hole, and the taper of the fourth conical hole is greater than the taper of the third conical hole. The protrusions are arranged in a spiral shape. Through the combined action of the feed pipe and the hot air pipe, the contact area between the material and the hot air is increased. The protrusions in the centrifugal box can prevent the material from accumulating during the drying process.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent increases the contact area between the material and the hot air by combining the feed pipe and the hot air pipe, and avoids the accumulation of materials during the drying process through the protrusions in the centrifugal box. However, it cannot continuously and evenly heat the material, cannot evenly absorb water vapor, and the overall drying efficiency is low.

[0006] Based on this, the present invention designs a negative pressure low temperature drying device to solve the above problems. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a negative pressure low-temperature drying device.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A negative pressure low-temperature drying equipment comprises a cabinet, the front side wall of the cabinet is hinged with a sealed door, the inner side wall of the cabinet is provided with a plurality of heating plates, the lower side of the cabinet is slidably connected with a pull-out plate, the front side of the pull-out plate is rotatably connected to a support frame through a rotating shaft, the upper side of the support frame is rotatably connected to a rotary drying device for rotary drying materials through a rotating shaft, the rear side of the rotary drying device is provided with two inclined driving devices for driving the rotary drying device, the inclined driving devices are symmetrically arranged on the rear side of the cabinet, the rotary drying device comprises: a first rotating disc, a second rotating disc, a rotating rod, a rotating frame, a spring plunger, a material frame and an auxiliary roller, the first rotating disc is rotatably connected to the upper side of the support frame through a rotating shaft, the second rotating disc is fixedly mounted on the rotating shaft of the first rotating disc, and the plurality of rotating rods are arranged in an array along the circumference of the center of the first rotating disc The cloth is on the first rotating disc, the rotating rod is rotatably connected between the first rotating disc and the second rotating disc, the rotating frame is fixedly installed on the rotating rod, the spring plunger is fixedly installed on the front and rear ends of the rotating frame, the material frame is slidably connected to the rotating frame, and multiple auxiliary rollers are rotatably connected to the rear side of the pull-out plate through a rotating shaft, the auxiliary rollers are located on the lower side of the second rotating disc, and slots are provided on the front and rear sides of the material frame. The positioning column of the spring plunger is provided in the slot, and a locking device for locking the rotating rod is installed on the rear side wall of the second rotating disc. The rear side of the cabinet is connected to an external vacuum extractor through a pipeline, so that negative pressure is generated in the cabinet, thereby reducing the boiling point of water in the material in the cabinet. The moisture in the material can be quickly vaporized and evaporated at a lower temperature, thereby achieving the purpose of drying. Multiple rollers are provided in the cabinet to reduce the friction when the pull-out plate moves.

[0010] Furthermore, the tilt driving device includes: a fixed block, an adjusting screw, an inclined block, a rotating plate and a driving roller, the fixed block is fixedly installed on the rear side of the interior of the cabinet, the middle side of the plurality of adjusting screws is threadedly connected to the fixed block, the inclined block is slidably connected to the rear side of the interior of the cabinet, the inclined block is located on the front side of the fixed block, the rear side of the inclined block is threadedly connected to the front side of the adjusting screw, the rotating plate is rotatably connected to the rear side of the interior of the cabinet via a rotating shaft, the rotating plate is located on the front side of the inclined block, the driving roller is rotatably connected to the front side of the rotating plate via a rotating shaft, and the driving roller is tightly against the outer ring of the second rotating disk.

[0011] Furthermore, a driving motor is provided at the rear side of the driving roller of the right tilt driving device. The driving motor is fixedly installed at the rear side of the rotating plate through a motor bracket, and the output shaft of the driving motor is fixedly connected to the rotating shaft of the driving roller.

[0012] Furthermore, the locking device includes: a fixed shell, a third rotating disk, a connecting rod, a sliding block, a C-shaped plate and a cylinder, the fixed shell is fixedly mounted on the rear side wall of the second rotating disk, the third rotating disk is rotatably connected to the rear side wall of the fixed shell by a rotating shaft, one end of a plurality of connecting rods is rotatably connected to the third rotating disk by a rotating shaft, the connecting rods are arranged in a circular array along the center of the third rotating disk, one end of each connecting rod away from the third rotating disk is rotatably connected to a sliding block by a rotating shaft, the sliding block is slidably connected to the fixed shell, the C-shaped plate is fixedly mounted on the end of the sliding block away from the center of the third rotating disk, the cylinder is fixedly mounted on the front side wall of the fixed shell, and the output end of the cylinder is fixedly connected to the sliding block on the upper side of the fixed shell.

[0013] Furthermore, the end of the rotating rod close to the second rotating disk is provided with stripes, and the end of the C-shaped plate away from the sliding block is close to the rotating rod, and the C-shaped plate moves to clamp the rotating rod, so that the rotating rod stops rotating.

[0014] Furthermore, a swing dehumidification device is installed on the upper side of the cabinet.

[0015] Furthermore, the swing dehumidification device includes: a linear module, an extension frame, a rotating straw and a swing assembly, the linear module is fixedly installed on the upper side of the cabinet, the extension frame is fixedly installed on the output end of the linear module, the rotating straw is rotatably connected to the middle side of the extension frame through a rotating shaft, the swing assembly is installed on the upper side of the cabinet, the swing assembly is located on the lower side of the extension frame, and the input end of the rotating straw is connected to an external desiccant through a pipe for absorbing water vapor in the cabinet to keep the cabinet dry.

[0016] Furthermore, the swing assembly includes a limiting plate, the limiting plate is provided with an S-shaped slot, one end of the rotating straw away from the extension frame is arranged in the S-shaped slot, and the rotating straw can slide in the S-shaped slot.

[0017] Furthermore, a folding support device is provided on the lower side of the cabinet.

[0018] Furthermore, the folding support device includes: a moving frame, rollers and a support frame, the moving frame is arranged on the lower side of the cabinet, a plurality of rollers are rotatably connected to the lower side of the moving frame through a rotating shaft, and the support frame is hinged to the front side wall of the moving frame through a hinge.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The second rotating disc of the rotary drying device drives the first rotating disc to rotate through the driving rotation of the inclined driving device, and the rotation of the first rotating disc and the second rotating disc drives the rotating rod to rotate. At the same time, the rotating rod rotates under the gravity of the rotating frame and the material frame, so that the rotating frame and the material frame remain in a horizontal state. The heating plate is powered on to heat the cabinet to increase the evaporation rate of the water in the material. The rear side of the cabinet is connected to the external vacuum extractor through a pipeline, so that negative pressure is generated in the cabinet, thereby reducing the boiling point of water in the material in the cabinet. The water in the material can be quickly vaporized and evaporated at a lower temperature, thereby achieving the purpose of drying. Compared with traditional drying equipment, the heating temperature during drying will not be very high by generating negative pressure. Drying the material at a low temperature can avoid problems such as deterioration and decomposition caused by high temperature. It is particularly suitable for processing heat-sensitive materials, which is conducive to the material frame rotating while following the rotation of the first rotating disc and the second rotating disc, and is conducive to the continuous and uniform heating of the material in the material frame.

[0020] 2. The second rotating disc is supported by the auxiliary roller of the rotary drying device. After the material frame is filled or replaced, the rotary drying device is pushed back into the cabinet. The front and rear movement of the inclined block is adjusted by turning the adjusting screw. The inclination angle of the rotating plate is changed by the front and rear position of the inclined block. At this time, the second rotating disc can be smoothly placed on the driving roller, which is conducive to the rapid driving of the rotary drying device; the front and rear movement of the linear module output end of the swing dehumidification device drives the extension frame to move forward and backward, and the front and rear movement of the extension frame drives the rotating straw to move forward and backward. The rotating straw moves forward and backward and moves left and right along the S-shaped slot set on the limiting plate at the same time, which is conducive to the rotating straw to evenly absorb the water vapor in the cabinet;

[0021] 3. The output end of the cylinder is shortened to drive the sliding block downward, and the sliding block moves downward to drive the connecting rod downward, and the connecting rod moves downward to drive the third rotating disk to rotate, and the rotation of the third rotating disk drives the remaining connecting rods to rotate, and the rotation of the connecting rod drives the sliding block to move toward the center of the third rotating disk, and the sliding block moves toward the center of the third rotating disk and drives the C-shaped plate to move toward the center of the third rotating disk, so that the C-shaped plate is close to the rotating rod, locking the rotating rod so that it cannot rotate, so that the rotating frame is locked, and the material frame cannot rotate, which is conducive to taking the material frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 This is a structural schematic diagram of the present invention with part of the cabinet removed;

[0026] Figure 4 for Figure 3 A magnified view of middle;

[0027] Figure 5 This is a schematic diagram of the structure of the present invention with part of the cabinet removed in the loading state Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the structure of the present invention with part of the cabinet removed in the loading state Figure 2 ;

[0029] Figure 7 It is a structural schematic diagram of the swing dehumidification device of the present invention;

[0030] Figure 8 The structure of the locking device of the present invention is schematically shown in FIG. Figure 1 ;

[0031] Fig. 9 The structure of the locking device of the present invention is schematically shown in FIG. Figure 2 .

[0032] The numbers in the figure represent:

[0033] 1. Cabinet; 2. Pull-out plate; 3. Support frame; 4. Rotary drying device; 41. First rotating disc; 42. Second rotating disc; 43. Rotating rod; 44. Rotating frame; 45. Spring plunger; 46. Material frame; 47. Auxiliary roller; 5. Tilt drive device; 51. Fixed block; 52. Adjusting screw; 53. Bevel block; 54. Rotating plate; 55. Driving roller; 6. Driving motor; 7. Locking device; 71. Fixed shell; 72. Third rotating disc; 73. Connecting rod; 74. Sliding block; 75. C-shaped plate; 76. Cylinder; 8. Swinging dehumidification device; 81. Linear module; 82. Extension frame; 83. Rotating straw; 84. Limiting plate; 85. S-shaped slot; 9. Folding support device; 91. Moving frame; 92. Roller; 93. Support frame. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0037] Embodiment 1: In some embodiments, please refer to Figure 1-Figure 9 A negative pressure low-temperature drying device comprises a cabinet 1, wherein the front side wall of the cabinet 1 is hinged with a sealed door, the inner side wall of the cabinet 1 is provided with a plurality of heating plates, a pull-out plate 2 is slidably connected to the lower side of the interior of the cabinet 1, a support frame 3 is rotatably connected to the front side of the pull-out plate 2 via a rotating shaft, a rotary drying device 4 for rotary drying materials is rotatably connected to the upper side of the support frame 3 via a rotating shaft, two inclined driving devices 5 for driving the rotary drying device 4 are arranged at the rear side of the rotary drying device 4, and the inclined driving devices 5 are symmetrically arranged at the rear side of the interior of the cabinet 1, and the rotary drying device 4 comprises: a first rotating disc 41, a second rotating disc 42, a rotating rod 43, a rotating frame 44, a spring plunger 45, a material frame 46 and an auxiliary roller 47, wherein the first rotating disc 41 is rotatably connected to the support frame 3 via a rotating shaft On the side, the second rotating disk 42 is fixedly mounted on the rotating shaft of the first rotating disk 41, and a plurality of the rotating rods 43 are distributed on the first rotating disk 41 along the center circumference of the first rotating disk 41. The rotating rod 43 is rotatably connected between the first rotating disk 41 and the second rotating disk 42. The rotating frame 44 is fixedly mounted on the rotating rod 43, and the spring plunger 45 is fixedly mounted on the front and rear ends of the rotating frame 44. The material frame 46 is slidably connected to the rotating frame 44. A plurality of the auxiliary rollers 47 are rotatably connected to the rear side of the pull-out plate 2 through the rotating shaft. The auxiliary rollers 47 are located on the lower side of the second rotating disk 42. Slots are provided on the front and rear sides of the material frame 46. The positioning column of the spring plunger 45 is provided in the slot. A locking device 7 for locking the rotating rod 43 is installed on the rear side wall of the second rotating disk 42.

[0038] The rear side of the cabinet 1 is connected to an external vacuum extractor through a pipeline, so that negative pressure is generated in the cabinet 1, thereby reducing the boiling point of water in the material in the cabinet 1. The moisture in the material can be quickly vaporized and evaporated at a lower temperature, thereby achieving the purpose of drying. Compared with traditional drying equipment, by generating negative pressure, the heating temperature during drying will not be very high. Drying the material at a low temperature can avoid problems such as deterioration and decomposition caused by high temperature, and is particularly suitable for processing heat-sensitive materials.

[0039] A plurality of rollers are arranged in the cabinet body 1 to reduce the friction force when the pull-out plate 2 moves.

[0040] The second rotating disk 42 of the rotary drying device 4 is driven by the inclined driving device 5 to rotate, and the first rotating disk 41 and the second rotating disk 42 rotate to drive the rotating rod 43 to rotate. At the same time, the rotating rod 43 rotates under the gravity of the rotating frame 44 and the material frame 46, so that the rotating frame 44 and the material frame 46 remain in a horizontal state. The heating plate is powered on to heat the cabinet 1, thereby increasing the evaporation rate of the moisture in the material, which is beneficial for the material frame 46 to rotate while following the rotation of the first rotating disk 41 and the second rotating disk 42, and is beneficial for the material in the material frame 46 to be evenly heated.

[0041] The material tray is locked by a spring plunger 45, making it easy to take and put the material tray.

[0042] Embodiment 2: In some embodiments, Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, the tilting drive device 5 includes: a fixed block 51, an adjusting screw 52, ​​an inclined block 53, a rotating plate 54 and a driving roller 55, the fixed block 51 is fixedly installed on the rear side of the interior of the cabinet 1, and the middle side of the plurality of adjusting screws 52 is threadedly connected to the fixed block 51, the inclined block 53 is slidably connected to the rear side of the interior of the cabinet 1 frontward, the inclined block 53 is located on the front side of the fixed block 51, the rear side of the inclined block 53 is threadedly connected to the front side of the adjusting screw 52, ​​the rotating plate 54 is rotatably connected to the rear side of the interior of the cabinet 1 through a rotating shaft, the rotating plate 54 is located on the front side of the inclined block 53, the driving roller 55 is rotatably connected to the front side of the rotating plate 54 through a rotating shaft, and the driving roller 55 is tightly against the outer ring of the second rotating disk 42.

[0043] A driving motor 6 is provided at the rear side of the driving roller 55 of the right tilt driving device 5 . The driving motor 6 is fixedly mounted at the rear side of the rotating plate 54 through a motor bracket. The output shaft of the driving motor 6 is fixedly connected to the rotating shaft of the driving roller 55 .

[0044] The driving roller 55 of the tilting driving device 5 supports the second rotating disc 42 to rotate, and the output shaft of the driving motor 6 rotates to drive the driving roller 55 of the right tilting driving device 5 to rotate. The driving roller 55 rotates to drive the second rotating disc 42 to rotate, so that the rotary drying device 4 can be driven immediately after being pushed into the cabinet 1, which is conducive to the rapid driving of the rotary drying device 4.

[0045] The front-rear movement of the inclined block 53 is adjusted by rotating the adjusting screw 52 , and the inclination angle of the rotating plate 54 is changed by the front-rear position of the inclined block 53 , which is beneficial for quickly adjusting the inclination angle of the driving roller 55 and for smoothly placing the second rotating disk 42 on the driving roller 55 .

[0046] The locking device 7 includes: a fixed shell 71, a third rotating disk 72, a connecting rod 73, a sliding block 74, a C-shaped plate 75 and a cylinder 76. The fixed shell 71 is fixedly mounted on the rear side wall of the second rotating disk 42, and the third rotating disk 72 is rotatably connected to the rear side wall of the fixed shell 71 via a rotating shaft. One end of a plurality of connecting rods 73 is rotatably connected to the third rotating disk 72 via a rotating shaft. The connecting rods 73 are arranged in a circular array along the center of the third rotating disk 72. One end of each connecting rod 73 away from the third rotating disk 72 is rotatably connected to a sliding block 74 via a rotating shaft. The sliding block 74 is slidably connected to the fixed shell 71. The C-shaped plate 75 is fixedly mounted on one end of the sliding block 74 away from the center of the third rotating disk 72. The cylinder 76 is fixedly mounted on the front side wall of the fixed shell 71, and the output end of the cylinder 76 is fixedly connected to the sliding block 74 on the upper side of the fixed shell 71.

[0047] The end of the rotating rod 43 close to the second rotating disk 42 is provided with stripes, and the end of the C-shaped plate 75 away from the sliding block 74 is close to the rotating rod 43. The C-shaped plate 75 moves to clamp the rotating rod 43, so that the rotating rod 43 stops rotating.

[0048] When the material tray is to be taken, the output end of the cylinder 76 shortens and drives the sliding block 74 to move downward, and the sliding block 74 moves downward and drives the connecting rod 73 to move downward. The connecting rod 73 moves downward and drives the third rotating disk 72 to rotate. The rotation of the third rotating disk 72 drives the remaining connecting rods 73 to rotate. The rotation of the connecting rod 73 drives the sliding block 74 to move toward the center of the third rotating disk 72. The sliding block 74 moves toward the center of the third rotating disk 72 and drives the C-shaped plate 75 to move toward the center of the third rotating disk 72, so that the C-shaped plate 75 is close to the rotating rod 43, locking the rotating rod 43 so that it cannot rotate, so that the rotating frame 44 is locked, and the material frame 46 cannot rotate, which is conducive to the taking of the material frame 46.

[0049] Embodiment 3: In some embodiments, Figure 1-Figure 9As shown, as a preferred embodiment of the present invention, a swing dehumidification device 8 is installed on the upper side of the cabinet 1.

[0050] The swing dehumidification device 8 includes: a linear module 81, an extension frame 82, a rotating straw 83 and a swing component. The linear module 81 is fixedly installed on the upper side of the cabinet 1, and the extension frame 82 is fixedly installed on the output end of the linear module 81. The rotating straw 83 is rotatably connected to the middle side of the extension frame 82 through a rotating shaft. The swing component is installed on the upper side of the cabinet 1, and the swing component is located on the lower side of the extension frame 82. The input end of the rotating straw 83 is connected to an external desiccant through a pipeline to absorb water vapor in the cabinet 1 so that the cabinet 1 remains dry. An injection pipeline is fixedly installed on one side of the rotating straw 83, and the injection pipeline is connected to an external liquid nitrogen bottle for outputting liquid nitrogen into the cabinet 1 to reduce the temperature in the cabinet 1.

[0051] The swing assembly includes a limiting plate 84 , on which an S-shaped slot 85 is provided. One end of the rotating straw 83 away from the extension frame 82 is provided in the S-shaped slot 85 , and the rotating straw 83 can slide in the S-shaped slot 85 .

[0052] The output end of the linear module 81 of the swinging dehumidifier 8 moves forward and backward, driving the extension frame 82 to move forward and backward. The extension frame 82 moves forward and backward, driving the rotating straw 83 to move forward and backward. The rotating straw 83 moves forward and backward and moves left and right along the S-shaped groove 85 provided on the limiting plate 84, which is conducive to the rotating straw 83 to evenly absorb the water vapor in the cabinet 1.

[0053] A folding support device 9 is provided at the lower side of the cabinet body 1 .

[0054] The folding support device 9 includes: a moving frame 91, rollers 92 and a support frame 93. The moving frame 91 is arranged on the lower side of the cabinet 1. The multiple rollers 92 are rotatably connected to the lower side of the moving frame 91 through a rotating shaft. The support frame 93 is hinged to the front side wall of the moving frame 91 through a hinge.

[0055] When adding or replacing materials into the material frame 46, the support frame 93 of the folding support device 9 is pulled out in the direction away from the cabinet 1, and the support frame 93 is rotated at the same time so that the support frame 93 is located on the upper side of the movable frame 91. At this time, the sealing door is opened, the pull-out plate 2 is pulled out, and the front side of the pull-out plate 2 is placed on the support frame 93. The movement of the pull-out plate 2 drives the support frame 93 to move. The support frame 93 can move quickly under the action of the movable frame 91 and the roller 92, which is beneficial to auxiliary support of the rotary drying device 4.

[0056] At this time, the auxiliary roller 47 of the rotary drying device 4 is used to support the second rotary disc 42. After the material frame 46 is filled or replaced, the rotary drying device 4 is pushed back into the cabinet 1, and the front and rear movement of the inclined block 53 is adjusted by rotating the adjusting screw 52. The inclination angle of the rotating plate 54 is changed by the front and rear position of the inclined block 53. At this time, the second rotary disc 42 can be smoothly placed on the driving roller 55, which is conducive to the rapid driving of the rotary drying device 4.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A negative pressure low temperature drying device, comprising a cabinet (1), characterized in that: The front side wall of the cabinet (1) is hinged with a sealed door, the inner side wall of the cabinet (1) is provided with a plurality of heating plates, the lower side of the cabinet (1) is slidably connected with a pull-out plate (2), the front side of the pull-out plate (2) is rotatably connected with a support frame (3) via a rotating shaft, the upper side of the support frame (3) is rotatably connected with a rotary drying device (4) for rotary drying materials via a rotating shaft, the rear side of the rotary drying device (4) is provided with two inclined driving devices (5) for driving the rotary drying device (4), and the inclined driving devices (5) are symmetrically arranged at the rear side of the cabinet (1); The rotary drying device (4) comprises: a first rotary disc (41), a second rotary disc (42), a rotating rod (43), a rotating frame (44), a spring plunger (45), a material frame (46) and an auxiliary roller (47); the first rotary disc (41) is rotatably connected to the upper side of the support frame (3) via a rotating shaft; the second rotary disc (42) is fixedly mounted on the rotating shaft of the first rotary disc (41); a plurality of rotating rods (43) are distributed on the first rotary disc (41) in an array along the center circumference of the first rotary disc (41); the rotating rods (43) are rotatably connected between the first rotary disc (41) and the second rotary disc (42); The rotating frame (44) is fixedly mounted on the rotating rod (43), the spring plunger (45) is fixedly mounted on the front and rear ends of the rotating frame (44), the material frame (46) is slidably connected to the rotating frame (44), a plurality of auxiliary rollers (47) are rotatably connected to the rear side of the pull-out plate (2) via a rotating shaft, the auxiliary rollers (47) are located on the lower side of the second rotating disk (42), the material frame (46) is provided with slots on the front and rear sides, the positioning column of the spring plunger (45) is arranged in the slot, the rear side wall of the second rotating disk (42) is provided with a locking device (7) for locking the rotating rod (43), and a plurality of roller shafts are arranged in the cabinet (1).

2. The negative pressure low temperature drying equipment according to claim 1, characterized in that: The tilting driving device (5) comprises: a fixed block (51), an adjusting screw (52), an inclined block (53), a rotating plate (54) and a driving roller (55); the fixed block (51) is fixedly mounted on the rear side of the cabinet (1); the middle side of a plurality of adjusting screws (52) is threadedly connected to the fixed block (51); the inclined block (53) is slidably connected to the rear side of the cabinet (1) in a forward and backward manner; the inclined block (53) is located on the front side of the fixed block (51); the rear side of the inclined block (53) is threadedly connected to the front side of the adjusting screw (52); the rotating plate (54) is rotatably connected to the rear side of the cabinet (1) via a rotating shaft; the rotating plate (54) is located on the front side of the inclined block (53); the driving roller (55) is rotatably connected to the front side of the rotating plate (54) via a rotating shaft; and the driving roller (55) is closely attached to the outer ring of the second rotating disk (42).

3. The negative pressure low temperature drying equipment according to claim 2, characterized in that: A driving motor (6) is arranged at the rear side of the driving roller (55) of the right tilt driving device (5); the driving motor (6) is fixedly mounted on the rear side of the rotating plate (54) via a motor bracket; and the output shaft of the driving motor (6) is fixedly connected to the rotating shaft of the driving roller (55).

4. The negative pressure low temperature drying equipment according to claim 3, characterized in that: The locking device (7) comprises: a fixed shell (71), a third rotating disk (72), a connecting rod (73), a sliding block (74), a C-shaped plate (75) and a cylinder (76); the fixed shell (71) is fixedly mounted on the rear side wall of the second rotating disk (42); the third rotating disk (72) is rotatably connected to the rear side wall of the fixed shell (71) via a rotating shaft; one end of a plurality of connecting rods (73) is rotatably connected to the third rotating disk (72) via a rotating shaft; the connecting rods (73) are arranged along the third rotating disk (72) to move along the rear side wall of the fixed shell (71); ) are arranged in a circular array with the center of each connecting rod (73) away from the third rotating disk (72), one end of each connecting rod (73) is rotatably connected to a sliding block (74) through a rotating shaft, and the sliding block (74) is slidably connected to the fixed shell (71), and the C-shaped plate (75) is fixedly mounted on the end of the sliding block (74) away from the center of the third rotating disk (72), and the cylinder (76) is fixedly mounted on the front side wall of the fixed shell (71), and the output end of the cylinder (76) is fixedly connected to the sliding block (74) on the upper side of the fixed shell (71).

5. The negative pressure low temperature drying equipment according to claim 4, characterized in that: One end of the rotating rod (43) close to the second rotating disk (42) is provided with stripes, and one end of the C-shaped plate (75) away from the sliding block (74) is close to the rotating rod (43).

6. The negative pressure low temperature drying equipment according to claim 5, characterized in that: A swing dehumidification device (8) is installed on the upper side of the cabinet (1).

7. The negative pressure low temperature drying equipment according to claim 6, characterized in that: The swing dehumidification device (8) comprises: a linear module (81), an extension frame (82), a rotating suction pipe (83) and a swing assembly, wherein the linear module (81) is fixedly mounted on the upper side of the cabinet (1), the extension frame (82) is fixedly mounted on the output end of the linear module (81), the rotating suction pipe (83) is rotatably connected to the middle side of the extension frame (82) via a rotating shaft, the swing assembly is mounted on the upper side of the cabinet (1), and the swing assembly is located on the lower side of the extension frame (82).

8. The negative pressure low temperature drying equipment according to claim 7, characterized in that: The swing assembly comprises a limiting plate (84), an S-shaped slot (85) is arranged on the limiting plate (84), and one end of the rotating suction tube (83) away from the extension frame (82) is arranged in the S-shaped slot (85).

9. The negative pressure low temperature drying equipment according to claim 8, characterized in that: A folding support device (9) is provided on the lower side of the cabinet (1).

10. The negative pressure low temperature drying equipment according to claim 9, characterized in that: The folding support device (9) comprises: a moving frame (91), rollers (92) and a support frame (93); the moving frame (91) is arranged on the lower side of the cabinet (1); a plurality of rollers (92) are rotatably connected to the lower side of the moving frame (91) via a rotating shaft; and the support frame (93) is hinged to the front side wall of the moving frame (91) via a hinge.

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