A negative pressure low temperature drying equipment

Abstract

The present invention discloses a negative pressure low-temperature drying device, comprising a cabinet, wherein 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 interior of the cabinet is slidably connected to a pull-out plate, the front side of the pull-out plate is rotatably connected to a support frame via a rotating shaft, the upper side of the support frame is rotatably connected to a rotary drying device for rotary drying materials via a rotating shaft, the rear side of the rotary drying device is provided with two inclined drive devices for driving the rotary drying device, the inclined drive devices are symmetrically arranged at the rear side of the interior of the cabinet, and 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. In the above manner, the present invention can continuously and evenly heat materials, can evenly absorb water vapor in the cabinet, and can quickly lock the material frame for taking and placing the material frame.

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 equipment working chamber. Under negative pressure, the boiling point of water will be lowered, 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. It is particularly suitable for processing heat-sensitive materials.

[0003] Chinese patent CN221705969U proposes a low-temperature negative pressure drying device for moist materials, comprising a centrifugal box, a plurality of protrusions fixedly provided on the inner wall of the inner cavity of the centrifugal box, a feed pipe fixedly provided on one side of the centrifugal box, a first conical hole provided on one side of the feed pipe, a second conical hole provided on the other side, a hot air pipe fixedly provided on one side of the centrifugal box, the hot air pipe being located below the feed pipe, a third conical hole provided on one side of the hot air pipe, a fourth conical hole provided 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, the taper of the fourth conical hole is greater than the taper of the third conical hole, and the protrusions are arranged in a spiral shape. Through the combination 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 through the combination of 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 and cannot evenly absorb water vapor, resulting in low overall drying efficiency.

[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 body, the front side wall of the cabinet body is hinged with a sealed door by a hinge, the inner side wall of the cabinet body is provided with multiple heating plates, the lower side of the cabinet body is slidably connected with a pull-out plate, the front side of the pull-out plate is rotatably connected to a support frame by a rotating shaft, the upper side of the support frame is rotatably connected to a rotary drying device for rotating drying the material by a rotating shaft, and the rear side of the rotary drying device is provided with two inclined driving devices for driving the rotary drying device, and the inclined driving devices are symmetrically arranged on the rear side of the cabinet body, and 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 by a rotating shaft, the second rotating disc is fixedly mounted on the rotating shaft of the first rotating disc, and the multiple 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 mounted on the rotating rod, the spring plunger is fixedly mounted 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 roller is 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 pipe, 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 quickly vaporize and evaporate 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 drive 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 multiple adjusting screws is threadedly connected to the fixed block, the inclined block is connected to the rear side of the interior of the cabinet for sliding back and forth, 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 drive motor is provided on the rear side of the drive roller of the right tilt drive device. The drive motor is fixedly mounted on the rear side of the rotating plate through a motor bracket, and the output shaft of the drive motor is fixedly connected to the rotating shaft of the drive 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 multiple 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, each of the connecting rods is rotatably connected to a sliding block at one end away from the third rotating disk 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 swinging dehumidification device includes: a linear module, an extension frame, a rotating straw and a swinging 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 swinging assembly is installed on the upper side of the cabinet, and the swinging assembly is located on the lower side of the extension frame. The input end of the rotating straw is connected to an external desiccant through a pipe, which is used to absorb 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, the end of the rotating straw away from the extension frame is provided 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, multiple 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 present invention drives the first rotating disc to rotate by the driving rotation of the second rotating disc of the rotary drying device through 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 energized to heat the cabinet, thereby increasing the evaporation rate of the moisture in the material, and the rear side of the cabinet is connected to the external vacuum extractor through a pipeline, so that a negative pressure is generated in the cabinet, thereby reducing the boiling point of the water in the material in the cabinet, and 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, 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, and is particularly suitable for processing heat-sensitive materials. It is beneficial for the material frame to rotate while following the rotation of the first rotating disc and the second rotating disc, which is beneficial for the material in the material frame to be continuously and evenly heated;

[0020] 2. The second rotating disc is supported by the auxiliary roller of the rotary drying device. After the material frame is loaded 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 drive of the rotary drying device. The linear module output end of the swing dehumidification device moves back and forth, driving the extension frame to move back and forth. The extension frame moves back and forth, driving the rotating straw to move back and forth. The rotating straw moves back and forth and moves left and right along the S-shaped slot provided on the limiting plate, which is conducive to the rotating straw evenly absorbing water vapor in the cabinet.

[0021] 3. The output end of the cylinder is shortened to drive the sliding block to move downward, and the downward movement of the sliding block drives the connecting rod to move downward. The downward movement of the connecting rod drives the third rotating disk to rotate. The rotation of the third rotating disk drives the remaining connecting rods to rotate. The rotation of the connecting rod drives the sliding block to move toward the center of the third rotating disk. The sliding block moves toward the center of the third rotating disk, driving 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] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[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 diagram of the present invention with part of the cabinet removed;

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

[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. Figure 1 ;

[0031] Figure 9 The structure of the locking device of the present invention is schematically shown. 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. Tilting 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] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to 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] Example 1: In some embodiments, please refer to Figures 1-9 , a negative pressure low-temperature drying equipment, including a cabinet 1, 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 to a pull-out plate 2, the front side of the pull-out plate 2 is rotatably connected to a support frame 3 through a rotating shaft, the upper side of the support frame 3 is rotatably connected to a rotary drying device 4 for rotary drying the material through 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, the inclined driving devices 5 are symmetrically arranged on the rear side of the interior of the cabinet 1, and the rotary drying device 4 includes: 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, the first rotating disc 41 is rotatably connected to the support frame 3 through a rotating shaft On the side, the second rotating disc 42 is fixedly mounted on the rotating shaft of the first rotating disc 41, and multiple rotating rods 43 are distributed on the first rotating disc 41 along the center circumference of the first rotating disc 41. The rotating rod 43 is rotatably connected between the first rotating disc 41 and the second rotating disc 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. Multiple auxiliary rollers 47 are rotatably connected to the rear side of the pull-out plate 2 through the rotating shaft. The auxiliary roller 47 is located on the lower side of the second rotating disc 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. The rear side wall of the second rotating disc 42 is installed with a locking device 7 for locking the rotating rod 43.

[0038] The rear side of the cabinet 1 is connected to an external vacuum extractor through a pipe, 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, the negative pressure generated during drying does not require very high heating temperature. 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.

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

[0040] The second rotating disc 42 of the rotary drying device 4 is driven by the inclined driving device 5 to rotate, driving the first rotating disc 41 to rotate. The rotation of the first rotating disc 41 and the second rotating disc 42 drives the rotating rod 43 to rotate. At the same time, the rotating rod 43 rotates under the action of 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 energized 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 disc 41 and the second rotating disc 42, which is beneficial for the material in the material frame 46 to be evenly heated.

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

[0042] Embodiment 2: In some embodiments, as Figures 1-9 As shown, as a preferred embodiment of the present invention, the tilting drive device 5 includes: a fixed block 51, an adjusting screw 52, ​​a bevel 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 multiple adjusting screws 52 is threadedly connected to the fixed block 51, the bevel block 53 is connected to the rear side of the interior of the cabinet 1 for sliding back and forth, the bevel block 53 is located on the front side of the fixed block 51, the rear side of the bevel 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 bevel 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 close to the outer ring of the second rotating disk 42.

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

[0044] The driving roller 55 of the tilting driving device 5 supports the rotation of the second rotating disc 42, 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 rotation of the driving roller 55 drives 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] By rotating the adjusting screw 52 to adjust the forward and backward movement of the inclined block 53, the inclination angle of the rotating plate 54 is changed by the forward and backward position of the inclined block 53, which is conducive to quickly adjusting the inclination angle of the driving roller 55 and facilitating the smooth placement of 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 multiple 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. The end of each connecting rod 73 away from the third rotating disk 72 is rotatably connected to the sliding block 74 via a rotating shaft. 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. 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. 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 position of the third rotating disk 72. The sliding block 74 moves toward the center position of the third rotating disk 72 and drives the C-shaped plate 75 to move toward the center position 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, as Figures 1-9As 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 assembly. The linear module 81 is fixedly mounted on the upper side of the cabinet 1, and the extension frame 82 is fixedly mounted 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 assembly is mounted on the upper side of the cabinet 1 and 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 pipe to absorb water vapor in the cabinet 1 to keep the cabinet 1 dry. A spray pipe is fixedly mounted on one side of the rotating straw 83, and the spray pipe is connected to an external liquid nitrogen bottle for outputting liquid nitrogen into the cabinet 1 to reduce the temperature inside the cabinet 1.

[0051] The swing assembly includes a limiting plate 84 , which is provided with an S-shaped slot 85 . One end of the rotating straw 83 away from the extension frame 82 is disposed 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 dehumidification device 8 moves back and forth, driving the extension frame 82 to move back and forth. The extension frame 82 moves back and forth, driving the rotating straw 83 to move back and forth. The rotating straw 83 moves back and forth 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 on 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 sealed door is opened, and the pull-out plate 2 is pulled out. 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 assist in supporting 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 loaded or replaced, the rotary drying device 4 is pushed back into the cabinet 1. 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 they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these 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 various 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, and the inner side wall of the cabinet (1) is provided with a plurality of heating plates. The lower side of the interior of the cabinet (1) is slidably connected to a pull-out plate (2), the front side of the pull-out plate (2) is rotatably connected to a support frame (3) via a rotating shaft, and the upper side of the support frame (3) is rotatably connected to 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 tilting drive devices (5) for driving the rotary drying device (4), and the tilting drive devices (5) are symmetrically arranged on the rear side of the interior 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), wherein 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 the rotating rods (43) are distributed on the first rotary disc (41) along the center circumference of the first rotary disc (41), and 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), and a plurality of auxiliary rollers (47) are rotatably connected to the rear side of the pull-out plate (2) through a rotating shaft, the auxiliary rollers (47) are located on the lower side of the second rotating disc (42), the material frame (46) is provided with slots on the front and rear sides, the positioning column of the spring plunger (45) is provided in the slot, the rear side wall of the second rotating disc (42) is provided with a locking device (7) for locking the rotating rod (43), and a plurality of rollers are provided in the cabinet (1); The locking device (7) comprises: a fixed housing (71), a third rotating disc (72), a connecting rod (73), a sliding block (74), a C-shaped plate (75) and a cylinder (76), wherein the fixed housing (71) is fixedly mounted on the rear side wall of the second rotating disc (42), the third rotating disc (72) is rotatably connected to the rear side wall of the fixed housing (71) via a rotating shaft, one end of a plurality of connecting rods (73) is rotatably connected to the third rotating disc (72) via a rotating shaft, and the connecting rods (73) are arranged along the third rotating disc (72) to rotate. ) are arranged in a circular array with the center of each connecting rod (73) away from the third rotating disk (72), and each end of the connecting rod (73) is connected to a sliding block (74) through a rotating shaft, and the sliding block (74) is slidably connected to the fixed shell (71). 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). The output end of the cylinder (76) is fixedly connected to the sliding block (74) on the upper side of the fixed shell (71).

2. The negative pressure low temperature drying equipment according to claim 1, characterized in that: The tilting drive device (5) comprises: a fixed block (51), an adjusting screw (52), an inclined block (53), a rotating plate (54) and a driving roller (55), wherein the fixed block (51) is fixedly mounted on the rear side of the interior of the cabinet (1), the middle sides of the plurality of adjusting screws (52) are 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) in a forward and backward manner, the inclined block (53) is located in front 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) via a rotating shaft, the rotating plate (54) is located in front 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 in close contact with 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 drive motor (6) is provided on the rear side of the drive roller (55) of the right tilt drive device (5). The drive motor (6) is fixedly mounted on the rear side of the rotating plate (54) via a motor bracket, and the output shaft of the drive motor (6) is fixedly connected to the rotating shaft of the drive roller (55).

4. The negative pressure low temperature drying equipment according to claim 3, characterized in that: One end of the rotating rod (43) close to the second rotating disc (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).

5. The negative pressure low temperature drying equipment according to claim 4, characterized in that: A swing dehumidification device (8) is installed on the upper side of the cabinet (1).

6. The negative pressure low temperature drying equipment according to claim 5, 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).

7. The negative pressure low temperature drying equipment according to claim 6, characterized in that: The swing assembly comprises a limiting plate (84), an S-shaped slot (85) is provided on the limiting plate (84), and an end of the rotating straw (83) away from the extension frame (82) is provided in the S-shaped slot (85).

8. The negative pressure low temperature drying equipment according to claim 7, characterized in that: A folding support device (9) is provided on the lower side of the cabinet body (1).

9. The negative pressure low temperature drying equipment according to claim 8, 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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