A vacuum spiral dryer

Abstract

The invention discloses a vacuum spiral dryer, which relates to the technical field of dryers and comprises an evaporating barrel, wherein a driving motor is arranged on one side of the evaporating barrel, a central shaft is fixedly arranged on the rotating shaft of the driving motor, the central shaft passes through the evaporating barrel, a spiral roller and a mixing rod are fixedly arranged on the central shaft, a recovery device is arranged on the lower side of the evaporating barrel, a material carrying plate is evenly fixedly arranged on the spiral roller, the material carrying plate is located at a position far away from the central shaft, a plurality of material carrying plates are spirally arranged along the central shaft, the central shaft is hollow, and a high-temperature liquid is passed inside; through the above technical scheme, the spiral roller pushes the material in the evaporating barrel forward when evaporating, and the material carrying plate can move the material, so that the material can be more fully contacted with the inside of the evaporating barrel to heat up for evaporation, and lifting the material is more conducive to the evaporation of water vapor, thereby greatly improving the drying efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of dryers, in particular to a vacuum spiral dryer. Background Art

[0002] The spiral evaporation dryer is a highly efficient drying equipment that combines the functions of evaporation and drying. Through the internal spiral structure, the material is continuously transported, heated, evaporated and dried inside the equipment. This equipment is usually used to process materials containing a large amount of water. The water in the material is evaporated by heating, and the spiral structure ensures that the material can be evenly heated during the evaporation process, thereby achieving a fast and efficient drying effect. The spiral evaporation dryer has been widely used in many industries such as chemical, food, and pharmaceuticals due to its high efficiency, continuity, and automation. Common classifications include different heating methods, such as direct heating spiral evaporation dryers and indirect heating spiral evaporation dryers. The former directly heats the material through a burner or electric heating element, while the latter transfers heat to the material through a heat exchanger; according to the movement of the material in the equipment, it can be divided into continuous spiral evaporation dryers and intermittent spiral evaporation dryers. The former has continuous flow of materials in the equipment, while the latter is dried in batches; in addition, there are special types of spiral evaporation dryers designed according to material characteristics and drying requirements, such as vacuum spiral evaporation dryers, spray spiral evaporation dryers, etc.

[0003] The Chinese invention patent with authorization publication number CN117029418B discloses a spiral belt vacuum rake dryer, which realizes diversified movement forms of materials in the drying process, including gathering to the discharge pipe, dispersing to both sides and directional pushing, through the first and second spiral turning components arranged in the horizontally arranged cylindrical drying cylinder, combined with the flexible adjustment of the drive of the reduction motor and the switching component. It not only increases the contact area between the material and the inner wall of the drying cylinder and optimizes the drying effect, but also significantly enhances the functionality and flexibility of the dryer, providing a more efficient and flexible drying solution for the chemical, food, pharmaceutical and other industries; however, the spiral propulsion structure in the prior art does not stir sufficiently, and the rake dryer cannot efficiently propel the material, which greatly reduces the efficiency of evaporative drying. Summary of the invention

[0004] In view of the above technical problems, the present invention discloses a vacuum spiral dryer, including an evaporating barrel, a driving motor is installed on one side of the evaporating barrel, a central axis is fixedly installed on the rotating shaft of the driving motor, the central axis passes through the evaporating barrel, a spiral roller and a mixing rod are fixedly installed on the central axis, a recovery device is installed on the lower side of the evaporating barrel, and a material stripping plate is evenly fixed on the spiral roller, which is located away from the central axis, and a plurality of material stripping plates are spirally arranged along the central axis, and the central axis is hollow, and a high-temperature liquid is passed inside. Through the above technical scheme, the spiral roller pushes the material in the evaporating barrel forward when evaporating, and the material stripping plate can move the material, so that the material can be more fully in contact with the inside of the evaporating barrel to heat up for evaporation, and lifting the material is more conducive to the evaporation of water vapor, which greatly improves the drying efficiency.

[0005] Furthermore, a sleeve is sleeved on the central axis, a plurality of long openings are arranged on the sleeve, the mixing rod 1 is in the long opening, a plurality of mixing rods 2 are fixedly mounted on the sleeve, and the mixing rods 2 rotate to form a plane with the mixing rod 1.

[0006] Furthermore, a torsion spring is fixedly mounted on one end of the sleeve, a fixing ring is fixedly mounted on the torsion spring, and the fixing ring is fixedly connected to the central shaft.

[0007] Furthermore, a sliding seat is fixedly mounted on the side of the evaporator barrel, a plug plate is slidably mounted on the sliding seat, a small spring is fixedly mounted between the plug plate and the sliding seat, a socket is provided on the plug plate, a baffle is fixedly mounted on the sleeve, the baffle contacts the lower side of the plug plate and is limited by the plug plate, an unlocking mechanism is fixedly mounted on the fixing ring, and the unlocking mechanism enables the baffle to detach from the plug plate.

[0008] Furthermore, the unlocking mechanism includes a lever, which is fixedly mounted on the fixing ring, and a slope is arranged on the lever, and the slope cooperates with the upper side of the socket to move the plug upward, so that the baffle is separated from the plug, and the baffle is restricted by the plug. Through the above technical scheme, the mixing rod 1 and the mixing rod 2 can further stir the material, and perform more sufficient heating and evaporation. At the same time, when the baffle is stuck by the plug, the mixing rod 1 and the mixing rod 2 are separated, so that the material can be scooped up and then released, which improves the evaporation efficiency. By unlocking the restriction of the baffle through the lever, the mixing rod 2 quickly returns to its position and forms a plane with the mixing rod 1 again, which can shake the material without affecting the next scooping of the material.

[0009] Furthermore, the recovery device comprises a packaging box, a discharge port is arranged on the packaging box, the discharge port is connected to the evaporation barrel, a fork-scissor structure is arranged at the bottom of the packaging box, and a material holding barrel is arranged on the fork-scissor structure.

[0010] Furthermore, two barrel covers are slidably installed on the material barrel, and a reset spring is fixedly installed between the barrel cover and the material barrel for resetting. An opening cover plate is fixedly installed on the upper end of the barrel cover, and a top plate is fixedly installed on the top of the packaging box. When the material barrel moves upward, the top plate clamps the opening cover plate and then drives the barrel cover to slide.

[0011] Furthermore, a limit rod is fixedly installed on the upper end of the packaging box, and the limit rod contacts the top plate, so that the top plate remains inclined. Through the above technical solution, the material barrel can be well protected in the packaging box, the discharged material will not be polluted by the air, and the risk of oxidation is reduced. The fork-scissor structure can automatically drive the barrel cover to open, and it will automatically close after the material is filled. When the material barrel is taken out, it still remains sealed and will not be oxidized, which is convenient for later storage.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) Through the technical solution of the present invention, the spiral roller pushes the material in the evaporation barrel forward when evaporating, and the material belt plate can move the material, so that the material can be more fully in contact with the inside of the evaporation barrel to heat up and evaporate, and lifting the material is more conducive to the evaporation of water vapor, which greatly improves the drying efficiency.

[0013] (2) Through the technical solution of the present invention, the mixing rods 1 and 2 can further stir the material to achieve more sufficient heating and evaporation. At the same time, when the baffle is stuck by the plug plate, the mixing rods 1 and 2 can be separated to allow the material to be scooped up and then released, thereby improving the evaporation efficiency. By unlocking the restriction of the baffle through the lever, the mixing rod 2 can quickly return to its position and form a plane with the mixing rod 1 again, which can shake the material without affecting the next scooping of the material.

[0014] (3) Through the technical solution of the present invention, the material barrel can be well protected in the packaging box, the discharged material will not be contaminated by the air, and the risk of oxidation is reduced. The fork-scissor structure can automatically drive the barrel cover to open, and it will automatically close after the material is filled. When the material barrel is taken out, it still remains sealed and will not be oxidized, which is convenient for later storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of the internal structure of the evaporation barrel according to an embodiment of the present invention.

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5A schematic diagram of the local structure of an embodiment of the present invention Figure 1 .

[0020] Figure 6 A schematic diagram of the local structure of an embodiment of the present invention Figure 2 .

[0021] Figure 7 Schematic diagram of a recovery device according to an embodiment of the present invention.

[0022] Figure numbers: 1-recovery device; 2-motor bracket; 3-drive motor; 4-central axis; 5-evaporation barrel; 6-vacuum port; 7-feeding port; 8-base; 9-evaporation barrel bracket; 10-spiral roller; 11-material plate; 12-sleeve; 13-torsion spring; 14-fixing ring; 15-push rod; 16-insert plate; 17-small spring; 18-sliding seat; 19-socket; 20-baffle; 21- Mixing rod one; 22-mixing rod two; 23-long opening; 24-cover plate; 101-lifting motor; 102-bidirectional screw; 103-thread block one; 104-thread block two; 105-connecting rod one; 106-connecting rod two; 107-lifting plate; 108-material barrel; 109-barrel cover; 110-opening cover plate; 111-top plate; 112-limiting rod; 113-packaging box; 114-discharging port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 7The vacuum spiral dryer shown comprises an evaporation barrel 5, wherein the interior of the evaporation barrel 5 is provided with an insulation layer and a heating layer for evaporation, a vacuum port 6 and a feeding port 7 are provided on the evaporation barrel 5, a recovery device 1 is provided on the lower side of the evaporation barrel 5, the vacuum port 6 is connected to the vacuum device to evacuate the evaporation barrel 5, and at the same time, the evaporated water vapor and condensed water in the evaporation barrel 5 are also sucked away and collected at a specific position, when working, the feeding port 7 is in a closed state, and the feeding port 7 is opened, and materials can be fed into the evaporation barrel 5 through the feeding port 7, four evaporation barrel brackets 9 are provided on the lower side of the evaporation barrel 5, the four evaporation barrel brackets 9 support four corners respectively, and the evaporation barrel brackets 9 are installed on a base 8, and the evaporation barrel brackets 9 can be fixedly installed on the base 8 by bolts, threaded holes are provided on the base 8, and a connecting hole is provided at the bottom end of the evaporation barrel bracket 9, a driving motor 3 is provided on one side of the evaporation barrel 5, and the driving motor 3 is fixedly installed on the motor seat, and four motor brackets 2 are provided on the lower side of the motor seat, the four motor brackets 2 support four corners respectively, and the motor brackets 2 are also fixedly installed on the base 8 by bolts.

[0025] In this embodiment, a central shaft 4 is fixedly mounted on the rotating shaft of the driving motor 3, and the central shaft 4 is connected through a coupling. The central shaft 4 passes through the evaporation barrel 5, and a spiral roller 10 and a mixing rod 21 are fixedly mounted on the central shaft 4. A recovery device 1 is mounted on the lower side of the evaporation barrel 5. The spiral roller 10 is evenly fixed with a material strip 11, which is located away from the central shaft 4. A plurality of material strips 11 are spirally arranged along the central shaft 4. The central shaft 4 is hollow, and a high-temperature liquid is passed through the interior. The other end of the central shaft 4 is filled with high-temperature liquid into the central shaft 4. In other embodiments, water vapor can also be passed for heating. Through the above technical solution, the spiral roller 10 pushes the material in the evaporation barrel 5 forward when evaporating, and the material strip 11 can move the material, so that the material is more fully in contact with the interior of the evaporation barrel 5 to heat up for evaporation, and lifting the material is more conducive to the evaporation of water vapor, which greatly improves the drying efficiency.

[0026] In this embodiment, a sleeve 12 is sleeved on the central axis 4, one end of the sleeve 12 is located in the evaporation barrel 5, and the other end is located outside the evaporation barrel 5. A plurality of long openings 23 are arranged on the sleeve 12, and a mixing rod 21 is in the long opening 23. When the sleeve 12 is stationary, the central axis 4 rotates to drive the mixing rod 21 to move in the long opening 23. A plurality of mixing rods 22 are fixedly mounted on the sleeve 12, and the mixing rods 22 rotate to form a plane with the mixing rod 21. At this time, the simultaneous rotation can drive the material on the lower side of the evaporation barrel 5 upward. A torsion spring 13 is fixedly mounted on one end of the sleeve 12, and a fixing ring 14 is fixedly mounted on the torsion spring 13, and the fixing ring 14 is fixedly connected to the central axis 4. A sliding seat 18 is fixedly mounted on the side of the evaporation barrel 5, and a plug plate 16 is slidably mounted on the sliding seat 18. The plug plate 1 The lower end of 6 is located at the lower side of the sliding seat 18, and a small spring 17 is fixedly installed between the plug plate 16 and the sliding seat 18. A socket 19 is arranged on the plug plate 16. In the natural state, the small spring 17 keeps the socket 19 on the upper side of the sliding seat 18. A baffle 20 is fixedly installed on the sleeve 12. When the central axis 4 rotates, it drives the fixed ring 14. The fixed ring 14 drives the sleeve 12 to rotate through the torsion spring 13. The sleeve 12 drives the baffle 20. The baffle 20 contacts the lower side of the plug plate 16 and is limited by the plug plate 16 and cannot rotate anymore. At this time, the sleeve 12 and the mixing rod 22 do not rotate, the central axis 4 and the mixing rod 1 21 continue to rotate, the mixing rod 1 21 and the mixing rod 22 begin to separate, and an unlocking mechanism is fixedly installed on the fixed ring 14. The unlocking mechanism enables the baffle 20 to separate from the plug plate 16.

[0027] In this embodiment, the unlocking mechanism includes a lever 15, which is fixedly mounted on the fixing ring 14. A slope is provided on the lever 15, and the slope cooperates with the upper side of the socket 19 to move the plug plate 16 upward, so that the baffle 20 is separated from the plug plate 16, and the baffle 20 is restricted by the plug plate 16. The baffle 20 forms an angle of sixty degrees with the evaporation barrel 5 of the motor bracket 2. When the baffle 20 contacts the lower side of the plug plate 16, the lever 15 continues to rotate. After rotating sixty degrees, the inclined surface of the lever 15 contacts the upper end of the socket 19, driving the plug plate 16 to move upward. A cover plate 24 is fixedly installed on one side of the evaporation barrel 5, and the cover plate 24 can cover the unlocking mechanism and other parts for protection. Through the above technical scheme, the mixing rod 1 21 and the mixing rod 22 can further stir the material for more sufficient heating and evaporation. At the same time, when the baffle 20 is stuck by the plug plate 16, the mixing rod 1 21 and the mixing rod 22 are separated to allow the material to be scooped up and then released, thereby improving the evaporation efficiency. The restriction of the baffle 20 is unlocked by the lever 15, so that the mixing rod 22 quickly returns to its position and forms a plane with the mixing rod 1 21 again, which can vibrate the material without affecting the next scooping of the material.

[0028] In this embodiment, the recovery device 1 includes a packaging box 113, a door that can be opened is provided on one side of the packaging box 113, a discharge port 114 is provided on the packaging box 113, and the discharge port 114 is connected to the evaporation barrel 5. A fork shear structure is installed at the bottom of the packaging box 113, and a material bucket 108 is installed on the fork shear structure. When the door is opened, the material bucket 108 can be placed on the fork shear structure. Two barrel covers 109 are slidably installed on the material bucket 108, and a return spring is fixedly installed between the barrel cover 109 and the material bucket 108 for resetting. The return spring is not marked in the middle. When the barrel cover 109 is opened, the return spring is compressed and then reset by the elastic force of the return spring. This is a common reset structure and will not be elaborated. An opening cover plate 110 is fixedly installed on the upper end of the barrel cover 109, and a top plate 111 is fixedly installed on the top of the packaging box 113. The material bucket 108 moves upward and the top plate 111 clamps the opening cover plate 110, thereby driving the barrel cover 109 to slide.

[0029] The upper end of the packaging box 113 is fixed with a limit rod 112, which contacts the top plate 111, so that the top plate 111 remains tilted. The material barrel 108 moves upward, so that the upper end of the barrel cover 109 contacts the lower end of the top plate 111. Since the top plate 111 is in an inclined state, the lower end of the top plate 111 slides on the upper end of the barrel cover 109, and then supports the cover opening plate 110, and begins to open the barrel cover 109. After filling, the fork-scissor structure drives the material barrel 108 to descend, and at this time, the barrel cover 109 is reset by the reset spring to package the material barrel 108. Through the above technical solution, the material barrel 108 can be well protected in the packaging box 113, and the discharged materials will not be polluted by the air, reducing the risk of oxidation. The fork-scissor structure can automatically drive the barrel cover 109 to open, and the materials are automatically closed after filling. When the material barrel 108 is taken out, it still remains sealed and will not be oxidized, which is convenient for later storage.

[0030] In this embodiment, the fork-scissor structure includes a barrel cover 109, which is fixedly mounted on the lower end of one side of the packaging box 113, a threaded block 103 is fixedly mounted on the rotating shaft of the lifting motor 101, and a threaded block 103 and a threaded block 104 are slidably mounted on the bottom of the packaging box 113, threaded blocks 103 and 104 are provided with threaded holes inside the threaded blocks 103 and 104, and cooperate with the two ends of the bidirectional screw 102, and the lifting motor 101 is started to drive the threaded blocks 103 and 104 to approach or move away from each other, a connecting rod 2 106 is hinged on the threaded block 104, a first end of a lifting plate 107 is hinged on the connecting rod 2 106, a connecting rod 105 is hinged on the threaded block 104, the connecting rod 105 is hinged to the second end of the lifting plate 107, the middle positions of the connecting rod 105 and the connecting rod 2 106 are hinged to each other, and the lifting plate 107 is slidably mounted in the packaging box 113.

[0031] Working principle: open the feeding port 7, throw the material into the evaporation barrel 5, start adding high-temperature liquid into the central axis 4, start the insulation layer and heating layer in the evaporation barrel 5, close the feeding port 7, start the driving motor 3, the driving motor 3 drives the central axis 4 to rotate, stirs the material in the evaporation barrel 5, and the spiral roller 10 drives the material to move and stir. At the same time, the material belt plate 11 can drive the material to leave the bottom of the evaporation barrel 5. Since there is a gap between the material belt plate 11 and the fixed ring 14, the material is lifted up and then falls down, so that the material can be fully heated and evaporated, and then the material will be pushed to the position of the sleeve 12. When the mixing rod 1 21 and the mixing rod 22 are in contact with the bottom of the evaporation barrel 5, the mixing rod 1 21 and the mixing rod 22 are side by side, which can scoop up all the materials. During the rotation, the baffle 20 is stuck by the lower end of the plug plate 16, and the sleeve 12 cannot rotate thereafter. , the mixing rod 1 21 and the mixing rod 2 22 begin to separate, at this time the materials begin to fall one after another, the central shaft 4 continues to rotate, the lever 15 contacts the upper end of the socket 19 to drive the plug plate 16 upward, the baffle 20 separates from the plug plate 16, and the sleeve 12 rotates under the drive of the torsion spring 13, and finally the mixing rod 1 21 and the mixing rod 2 22 return to the side-by-side state, and the material in the evaporation barrel 5 is repeatedly heated, evaporated and dried. After the end, the material barrel 108 is placed on the lifting plate 107, the packaging box 113 is closed and the discharge port 114 is opened, the fork shear structure drives the material barrel 108 upward, and the cover opening plate 110 is driven by the top plate 111 to open the barrel cover 109, and finally the lower end of the discharge port 114 is inserted into the material barrel 108, and the material begins to be discharged downward. After the material barrel 108 is full, the fork shear structure drives the material barrel 108 downward, and the barrel cover 109 is automatically closed, and then the material barrel 108 can be taken out.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum spiral dryer, comprising an evaporating barrel (5), a driving motor (3) being mounted on one side of the evaporating barrel (5), a central shaft (4) being fixedly mounted on the rotating shaft of the driving motor (3), the central shaft (4) passing through the evaporating barrel (5), a spiral roller (10) and a mixing rod (21) being fixedly mounted on the central shaft (4), a recovery device (1) being mounted on the lower side of the evaporating barrel (5), and characterized in that: The spiral roller (10) is evenly fixed with material plates (11) located at a position away from the central axis (4), and a plurality of material plates (11) are spirally arranged along the central axis (4); the central axis (4) is hollow and has a high-temperature liquid flowing therein; The central axis (4) is sleeved with a sleeve (12), a plurality of long openings (23) are provided on the sleeve (12), the mixing rod (21) is in the long opening (23), a plurality of mixing rods (22) are fixedly mounted on the sleeve (12), and the mixing rods (22) rotate to form a plane with the mixing rod (21); A torsion spring (13) is fixedly mounted on one end of the sleeve (12), a fixing ring (14) is fixedly mounted on the torsion spring (13), and the fixing ring (14) is fixedly connected to the central shaft (4); A sliding seat (18) is fixedly mounted on the side of the evaporation barrel (5), a plug plate (16) is slidably mounted on the sliding seat (18), a small spring (17) is fixedly mounted between the plug plate (16) and the sliding seat (18), a socket (19) is provided on the plug plate (16), a baffle (20) is fixedly mounted on the sleeve (12), the baffle (20) contacts the lower side of the plug plate (16) and is limited by the plug plate (16), and an unlocking mechanism is fixedly mounted on the fixing ring (14), the unlocking mechanism enables the baffle (20) to be separated from the plug plate (16); The unlocking mechanism comprises a lever (15) which is fixedly mounted on a fixing ring (14). An inclined surface is provided on the lever (15). The inclined surface cooperates with an upper side of the socket (19) to move the plug plate (16) upward, so that the baffle plate (20) is separated from the plug plate (16), and the baffle plate (20) is restrained by the plug plate (16).

2. A vacuum spiral dryer according to claim 1, characterized in that: The recovery device (1) comprises a packaging box (113), the packaging box (113) is provided with a discharge port (114), the discharge port (114) is connected to the evaporation barrel (5), and a fork-scissor structure is installed at the bottom end of the packaging box (113), and a material holding barrel (108) is installed on the fork-scissor structure.

3. A vacuum spiral dryer according to claim 2, characterized in that: Two barrel covers (109) are slidably mounted on the material storage barrel (108); a return spring is fixedly mounted between the barrel covers (109) and the material storage barrel (108) for resetting; a cover opening plate (110) is fixedly mounted on the upper end of the barrel cover (109); a top plate (111) is fixedly mounted on the top end of the packaging box (113); when the material storage barrel (108) moves upward, the top plate (111) clamps the cover opening plate (110) and drives the barrel cover (109) to slide.

4. A vacuum spiral dryer according to claim 3, characterized in that: A limiting rod (112) is fixedly mounted on the upper end of the packaging box (113); the limiting rod (112) is in contact with the top plate (111), so that the top plate (111) remains inclined.

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