Horizontal eccentric vibration vacuum dryer

Abstract

The application discloses a horizontal eccentric vibration vacuum dryer, and relates to the technical field of vibration dryers, which comprises a base, a drying container, a vibration exciting system and a hot air injection pipe. The drying container is used for containing materials. Springs are arranged between the drying container and the base. The vibration exciting system comprises at least one vibration exciting combination. The vibration exciting combination comprises a vibration exciter and a counterweight. The vibrators of adjacent vibration exciting combinations are sequentially connected. The vibration exciter and the counterweight are arranged on the two sides of the drying container respectively. The vibration exciter and the counterweight are located on the extension line of the horizontal diameter of the drying container. The hot air injection pipe is inserted into one end of the drying container. One end of the hot air injection pipe is located outside the drying container and is used for inputting hot air. A plurality of injection holes are arranged on the hot air injection pipe. The application greatly improves the input of energy in the central region, strengthens the heat and mass transfer processes, and achieves the purpose of improving the drying effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration dryers, in particular to a horizontal eccentric vibration vacuum dryer. BACKGROUND

[0002] The vibration vacuum dryer is a kind of vacuum dryer developed in the 1980s in China by referring to relevant technologies from abroad. Its principle is to rely on mechanical excitation force from the outside of the drying container to make the material in the drying container reach a fluidized state. The fluidized material is in constant contact with the inner wall of the drying chamber heated by the jacket, and the temperature of the material rises through heat transfer. When the temperature reaches the vaporization temperature, the moisture in the material vaporizes under vacuum, resulting in the drying of the material.

[0003] The vibration vacuum dryer has the following characteristics:

[0004] 1. The drying container is sealed and has no dynamic seal. Among all conduction drying equipment, it has the smallest leakage, low cost for obtaining and maintaining vacuum, and high drying efficiency.

[0005] 2. Small gas flow, less dust entrainment, low dust removal device load, and high material recovery rate.

[0006] 3. It can handle the drying of heat-sensitive, easily oxidized, flammable and explosive, and toxic materials.

[0007] 4. It can handle high-moisture materials and recover solvents.

[0008] 5. It can achieve clean drying and obtain products with extremely low moisture content.

[0009] The vibration vacuum dryer is a high-efficiency, energy-saving, and environmentally friendly drying equipment that has been welcomed by the pharmaceutical and fine chemical industries since its inception. After decades of popularization and application, with the rapid development of China's national economy, this dryer has been applied to more industries in China.

[0010] The vibration vacuum dryer can be divided into horizontal and vertical types. The vertical vibration vacuum dryer is limited in size and generally has a volume of no more than 1500L. The horizontal vibration vacuum dryer has developed from a maximum of 1500L in the early days to a maximum volume of 3000L. However, due to the limitations of its structural design, the size cannot be further increased. When the volume exceeds 3000L, the drying time becomes longer, the product drying is uneven, and the quality does not meet the standards, which seriously weakens the advantages of high efficiency, energy saving, and environmental protection of this model.

[0011] For example, Figure 5 and Figure 6As shown: the existing horizontal vibration vacuum dryer, the drying cylinder is a closed metal cylindrical drying cylinder, the eccentric block of the exciter 1a is connected with the drying cylinder through the bearing seat. When the motor rotates, the eccentric block of the exciter 1a is driven to rotate through the transmission shaft 2a to generate centrifugal force. Due to the combined action of the bearing seat and the spring, the drying cylinder produces excitation motion.

[0012] Because the exciter 1a is designed below the drying container, the transmission shaft 2a of the exciter 1a is in the vertical plane where the center line of the drying container is located, and there is no eccentric torque to the drying cylinder. The movement track of each part of the drying cylinder is approximately circular. The material in the drying cylinder forms a concentric circle layer with the center of the drying cylinder as the center. The outer layer of the material is strongly affected by the excitation force, the material flows fast, has more opportunities to contact the container wall, and evaporates fast. The center area is small, the material flow is not active, and a low-energy area H is formed. The material in this area cannot contact the inner wall of the container, and can only transmit heat to the low-energy area through the temperature difference between the circumferential material and the low-energy area. Therefore, the drying time is prolonged, the product is not dried uniformly, the larger the specification of the dryer, the larger the diameter of the container, the more serious the situation, and even the center material cannot be dried. In order to solve the problem of the low-energy area of the concentric circle, the amount of material is reduced, generally less than 60% each time, so that the material flow and back mixing effect can be improved. Although the single batch drying time is reduced, the drying uneven problem is solved, but the capacity and efficiency of a single equipment are reduced. SUMMARY

[0013] The purpose of the present application is to provide a horizontal eccentric vibration vacuum dryer to solve the problems of the prior art, greatly improve the energy input in the center area, and strengthen the heat and mass transfer process, so as to improve the drying effect.

[0014] In order to achieve the above purpose, the present application provides the following scheme:

[0015] The present application provides a horizontal eccentric vibration vacuum dryer, which comprises a base, a drying container, an excitation system and a hot air injection pipe. The drying container is used to hold materials. The drying container is horizontally and obliquely arranged on the base. A spring is arranged between the drying container and the base. The excitation system comprises at least one excitation combination. The excitation combination comprises an exciter and a counterweight. The exciters of adjacent excitation combinations are connected in sequence. The exciter and the counterweight are arranged on both sides of the drying container respectively. The exciter and the counterweight are located on the extension line of the horizontal diameter of the drying container. The hot air injection pipe extends from one end of the drying container. One end of the hot air injection pipe is located outside the drying container and is used to introduce hot air. A plurality of injection holes are arranged on the hot air injection pipe.

[0016] Preferably, the drying container comprises, from inside to outside, an inner container, a jacket, an insulation layer and an outer layer, a gap is arranged between the inner container and the jacket, and the inner container and the jacket are connected by several pipe piles.

[0017] Preferably, the upper part of the drying container is provided with a feeding port, which is communicated with the inner container, and a control valve is arranged at the feeding port; the lowest part of the drying container is provided with a discharging port, which is communicated with the inner container, and a discharging valve is arranged at the discharging port; the lower part of the drying container is provided with a heat medium inlet, which is communicated with the space between the inner container and the jacket, and a control valve is arranged at the heat medium inlet, which is used to connect with a heat medium; the upper part of the drying container is provided with a heat medium outlet, which is communicated with the space between the inner container and the jacket, and a control valve is arranged at the heat medium outlet; the lower part of the drying container is further provided with a sampling port, which is communicated with the inner container.

[0018] Preferably, the upper part of the drying container is provided with an air inlet, which is communicated with the inner container; the lower part of the drying container is provided with a liquid inlet and outlet, which is communicated with the inner container, and a control valve is arranged at the liquid inlet and outlet; a filter screen is arranged in the inner container, the filter screen is arranged near the lower part of the inner container, the liquid inlet and outlet is located below the filter screen, and the sampling port is located above the filter screen.

[0019] Preferably, the upper part of the drying container is provided with a manhole, which is communicated with the inner container, an internal filter is arranged in the manhole, a manhole cover is arranged at the manhole, a vacuum port is arranged on the manhole cover, a control valve is arranged at the vacuum port, and the vacuum port is connected with a vacuum pipeline through a flexible hose.

[0020] Preferably, a plurality of temperature measuring tubes are arranged along the axial direction of the drying container, silicon oil is arranged in each temperature measuring tube, and a thermocouple is arranged in each temperature measuring tube.

[0021] Preferably, the spray hole is arranged near the lower part of the drying container, one end of the hot air injection pipe is provided with a hot air inlet, which is used to introduce hot air, the other end of the hot air injection pipe is located in the drying container, the other end of the hot air injection pipe is closed, and a hot air outlet is arranged on the drying container, hot air enters the hot air injection pipe from the hot air inlet, is sprayed out from the spray hole, fully exchanges heat with the materials in the drying container, and the gas containing moisture is discharged through the hot air outlet.

[0022] Preferably, the exciter has two types: one, when the horizontal eccentric vibration vacuum dryer is a small machine, the exciter can be a commercially available vibration motor; two, when the horizontal eccentric vibration vacuum dryer is a large machine, the exciter comprises a bearing seat, a bearing, a rotating shaft and two eccentric block groups, the two eccentric block groups are respectively arranged at two ends of the bearing seat, the rotating shaft is rotationally connected with the bearing seat through the bearing, and the eccentric block group comprises two fan-shaped steel plates, the fan-shaped steel plates are sleeved on the rotating shaft, and the relative positions of the two fan-shaped steel plates in the same eccentric block group can be adjusted.

[0023] Preferably, the exciter is connected with a motor, and the excitors of adjacent excitation groups are sequentially connected through universal couplings.

[0024] The present application has the following technical effects relative to the prior art:

[0025] The present application changes the structure arrangement that the exciter of the existing horizontal vibration vacuum dryer is arranged directly below the drying container, so that the gravity center of the exciter and the gravity center of the drying container are not in the same vertical plane, and the exciter is arranged on the side of the drying container, so that the distance from the rotation center of the exciter to the center of the drying container is greater than the radius of the drying container. The eccentric distance causes the exciter to produce a strong torque effect on the drying container and the internal material when the exciter rotates, and under the combined action of the spring and the counterweight, the drying container performs eccentric vibration motion instead of circular motion, and the material in the drying container forms uneven vibration. The material close to the exciter has high energy input, and the movement track is vertical elliptical motion, and the material far from the exciter has horizontal linear elliptical motion. Under the combined action of the two elliptical motions of the eccentric excitation, the material flows and backmixes violently in the drying container, greatly improving the energy input in the central region.

[0026] The present application additionally provides a hot air injection pipe. When dry hot air or other hot medium gas with a certain pressure enters the hot air injection pipe, it is injected into the material through the injection hole, violently impacts the material, and makes the local material boil. Under the synergistic action of the excitation force, the vibration fluidized bed effect is generated, which greatly strengthens the heat and mass transfer process and achieves the purpose of improving the drying effect.

[0027] The present application overcomes the defect that the existing horizontal vibration vacuum drying container has a low-energy heat exchange area in the center, and further solves the problems of the existing equipment, such as small specification, prolonged drying time when the container is enlarged, uneven material drying, product quality decline, and low efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0029] Figure 1 Front view of the horizontal eccentric vibration vacuum dryer of the present application;

[0030] Figure 2 Sectional view of the horizontal eccentric vibration vacuum dryer of the present application;

[0031] Figure 3 Schematic diagram of the exciter of the present application;

[0032] Figure 4 Schematic diagram of the motion trajectory of each point on the circumference of the horizontal eccentric vibration vacuum dryer of the present application;

[0033] Figure 5 Sectional view of the existing horizontal vibration vacuum dryer;

[0034] Figure 6 Schematic diagram of the material flow trajectory when the load coefficient of the existing horizontal vibration vacuum dryer is less than 60%;

[0035] 1. outer cladding; 2. inner container; 3. jacket; 4. insulation layer; 5. feeding port; 6. manhole; 7. manhole cover; 8. vacuum extraction port; 9. built-in filter; 10. exciter; 11. counterweight; 12. reinforcing rib; 13. spring foot; 14. spring; 15. spring seat; 16. universal coupling; 17. machine base; 18. motor base; 19. motor; 20. discharge valve; 21. fixed flange; 22. hot air injection pipe; 23. hot air inlet; 24. filter screen; 25. liquid inlet and outlet; 26. air inlet; 27. heat medium inlet; 28. heat medium outlet; 29. thermocouple; 30. pipe pile; 31. hot air outlet; 32. exciter seat; 33. counterweight seat; 34. vacuum pressure gauge; 35. humidity sensor; 36. sampling port;

[0036] 1a. exciter; 2a. transmission shaft; H. low-energy zone. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0038] The purpose of this invention is to provide a horizontal eccentric vibration vacuum dryer to solve the problems existing in the prior art, greatly improve the energy input in the central region, and enhance the heat and mass transfer process, thereby improving the drying effect.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1 to 4 As shown: This embodiment provides a horizontal eccentric vibration vacuum dryer, including a base 17, a drying container, a vibration system, and a hot air jet pipe 22. The drying container is used to hold materials and is horizontally and inclinedly arranged on the base 17. A spring 14 is provided between the drying container and the base 17. The vibration system includes at least one vibration assembly, and 1-8 vibration assemblies can be arranged along the axial direction of the drying container. The vibration assembly includes a vibrator 10 and a counterweight 11. The vibrators 10 of adjacent vibration assemblies are connected in sequence. The vibrator 10 and the counterweight 11 are respectively arranged on both sides of the drying container, and both the vibrator 10 and the counterweight 11 are located on the extension line of the horizontal diameter of the drying container. The hot air jet pipe 22 extends into the drying container from one end, and one end of the hot air jet pipe 22 is located outside the drying container and is used to introduce hot air. The hot air jet pipe 22 is provided with several jet holes.

[0041] Specifically, in this embodiment, the drying container is a horizontal metal cylinder or polygonal cylinder. The two ends of the cylinder are either sealed with stamped heads or with flat plates. Large containers are often connected to the cylinder by welding, while small containers can be connected by flanges or studs. The drying container includes an inner liner 2, a jacket 3, an insulation layer 4, and an outer cladding layer 1 arranged from the inside out. There is a gap between the inner liner 2 and the jacket 3, and the inner liner 2 and the jacket 3 are connected by welding through several sets of pipe piles 30 evenly distributed around the inner liner 2.

[0042] In this embodiment, the upper part of the drying container is provided with a manhole 6, and a humidity sensor 35 is arranged at the manhole 6 to measure the humidity of the material in the inner container 2. The manhole 6 is communicated with the inner container 2, facilitating the maintenance and cleaning of the manhole 6. An inner filter 9 is arranged in the manhole 6 to block the material dust and reduce the load of the vacuum pipeline. The inner filter 9 is a stainless steel punched basket frame, and the lower end of the basket frame is closed by a punched mesh plate or welded by a stainless steel multi-layer sintered mesh plate. The upper end of the inner filter 9 is open and clamped into the flange of the manhole 6. According to different conditions of the material, filter bags made of filter cloth with different mesh sizes and materials are sleeved on the basket frame. A manhole cover 7 is arranged at the manhole 6, and the manhole cover 7 is connected with the flange of the manhole 6 by bolts to fix the inner filter 9. The manhole cover 7 is provided with a vacuum suction port 8 and a vacuum pressure gauge 34. A control valve is arranged at the vacuum suction port 8, and the vacuum suction port 8 is connected with the vacuum pipeline through a flexible hose.

[0043] In this embodiment, the upper part of the drying container is provided with a feeding port 5, and the feeding port 5 is communicated with the inner container 2. A control valve is arranged at the feeding port 5 to be connected with a material bin. The lowest position of the drying container is provided with a discharging port, and the discharging port is communicated with the inner container 2. A discharging valve 20 is arranged at the discharging port. The lower part of the drying container is provided with a heat medium inlet 27, and the heat medium inlet 27 is communicated with the space between the inner container 2 and the jacket 3. A control valve is arranged at the heat medium inlet 27, and the heat medium inlet 27 is connected with a heat medium through a flexible hose. The upper part of the drying container is provided with a heat medium outlet 28, and the heat medium outlet 28 is communicated with the space between the inner container 2 and the jacket 3. A control valve is arranged at the heat medium outlet 28. The lower part of the drying container is further provided with a sampling port 36, and the sampling port 36 is communicated with the inner container 2 and located above the filter mesh plate 24.

[0044] In this embodiment, the upper part of the drying container is provided with an air inlet 26, and the air inlet 26 is communicated with the inner container 2. The lower part of the drying container is provided with an inlet and outlet port 25, and the inlet and outlet port 25 is communicated with the inner container 2. A three-way control valve is arranged at the inlet and outlet port 25. A metal frame made of the same material as the inner container 2 is welded in the inner container 2. A stainless steel multi-layer sintered filter mesh plate 24 is fixed on the metal frame by bolts. The filter mesh plate 24 is arranged close to the lower part of the inner container 2, and the inlet and outlet port 25 is located below the filter mesh plate 24. The filter mesh plate 24, the inlet and outlet port 25 and the air inlet 26 of this embodiment form a washing and filtering system. The inlet and outlet port 25 can be implemented to be filled with liquid or to be filtered out by vacuum when the three-way control valve is controlled. When the material is a suspension, the material can be filtered by vacuum. Specifically, the inner container 2 is vacuumed,

[0045] In this embodiment, 2-3 temperature measuring tubes are arranged along the axial direction of the drying container, and silicon oil is arranged in each temperature measuring tube. A thermocouple 29 is arranged in each temperature measuring tube, and the thermocouple 29 is inserted into the silicon oil to measure the temperature of the material in the drying container.

[0046] In the embodiment, the hot air injection pipe 22 penetrates the inner container 2 from the head of the inner container 2 and is fixed to the head by the fixing flange 21. The hot air injection pipe 22 is arranged close to the lower part of the inner container 2 and is parallel to the axis of the inner container 2. The diameter of the hot air injection pipe 22 is not less than one sixth of the diameter of the inner container 2. The hot air injection pipe 22 is made of stainless steel pipe. One end of the hot air injection pipe 22 is provided with a hot air inlet 23 and is welded with a flange at a distance of 300 mm from the hot air inlet 23. The hot air inlet 23 is used for the hot air to enter. A control valve is arranged at the hot air inlet 23. The hot air inlet 23 is connected with the hot air system by a heat-resistant hose. The other end of the hot air injection pipe 22 is closed and located in the drying container. The part of the hot air injection pipe 22 inside the inner container 2 is fixed by a fixing support. The side of the hot air injection pipe 22 close to the lower part of the inner container 2 is provided with 3-4 rows of injection holes with a diameter of 2.5-5 mm. The injection holes are arranged in the axial direction with a certain opening rate. A hot air outlet 31 is arranged on the drying container. The hot air injection pipe 22 and the hot air outlet 31 form a hot air injection system. The hot air with a certain air pressure and temperature controlled by the outside enters the hot air injection pipe 22 from the hot air inlet 23, is sprayed from the injection holes, and is fully heat-exchanged with the materials in the drying container. The gas with moisture removed enters the connected external cyclone separator and bag-type dust collector for discharge through the hot air outlet 31.

[0047] The embodiment also comprises a controller. The controller is electrically connected with each control valve, the thermocouple 29 and the humidity sensor 35. Each control valve is a pneumatic valve and is started by a control relay. Before the operation, the operation program is programmed according to different drying process requirements. Then, the controller starts the feeding by opening the control valve of the feeding opening 5 and continues until the drying is finished and the discharge is completed, so that the whole drying cycle is completed.

[0048] In the embodiment, a plurality of spring feet 13 are welded on both sides of the drying container. The spring feet 13 on each side are uniformly arranged along the axis of the drying container and are symmetrically arranged on both sides. Correspondingly, a plurality of spring seats 15 are arranged on the base 17. The spring 14 is arranged between the spring foot 13 and the corresponding spring seat 15.

[0049] In the embodiment, a vertical line of the drying container in the horizontal direction is taken as the center line. A vibrator seat 32 is welded on one side. The vibrator 10 is fixed to the vibrator seat 32 by bolts. A counterweight seat 33 is welded on the other side. The vibrator seat 32 and the counterweight seat 33 are firmly welded with the reinforcing rib 12. The reinforcing rib 12 is welded to the jacket 3.

[0050] In the embodiment, the vibrator 10 has two forms. First, when the horizontal eccentric vibration vacuum dryer is a small machine, a commercially available vibration motor can be selected as the vibrator 10. Second, when the horizontal eccentric vibration vacuum dryer is a large machine, a vibrator 10 with a larger power can be selected. The vibrator 10 is arranged on the drying container and is connected with the motor by a belt or a gear. The motor is arranged on the base 17. Figure 3As shown, the exciter 10 comprises a bearing seat, bearings, a rotating shaft and two eccentric block groups. The bearing seat is welded or casted by steel plate. Bearings are installed at both ends of the bearing seat. The rotating shaft is rotatably connected with the bearing seat through the bearings. The bearing pressure cover is fixed with the bearings through bolts. The bearing play is adjusted by adjusting the tightness of the bearing pressure cover bolts to ensure the normal operation of the bearings. The two eccentric block groups are sleeved on the rotating shaft and are arranged at both ends of the bearing seat. Each eccentric block group comprises two fan-shaped steel plates. One fan-shaped steel plate is fixed on the rotating shaft through a key pin. The other fan-shaped steel plate is adjustably fixed with the fan-shaped steel plate on the rotating shaft through bolts to adjust the opening and closing angle therebetween. When the two fan-shaped steel plates completely overlap, the excitation force is maximum and the amplitude is also maximum. When the two fan-shaped steel plates are completely unfolded and do not overlap, the excitation force is minimum and the amplitude is also minimum. The amplitude of the embodiment can be adjusted within 2-12 mm.

[0051] In the embodiment, the installation position of the exciter 10 is on the horizontal diameter extension of the drying container. The excitation center deviates from the vertical plane where the center line of the drying container is located. The distance between the two centers is greater than the radius of the drying container, so as to ensure eccentric excitation. The counterweight 11 is arranged on the opposite side of the exciter 10. The center thereof should also be on the horizontal diameter extension of the drying container.

[0052] In the embodiment, the exciter 10 is connected with the motor 19 through the universal joint 16. The motor 19 is arranged on the motor base 18. The exciters 10 of adjacent excitation groups are connected in series through the universal joints 16. When the motor 19 rotates, all the eccentric block groups of the exciters 10 are driven to rotate through the universal joints 16. Under the cooperation of the counterweight 11 and the spring 14, eccentric elliptical vibration is generated.

[0053] The horizontal eccentric vibration vacuum dryer of the embodiment adopts the arrangement of the exciter 10 on the side of the drying container. The excitation center deviates from the vertical plane where the center line of the drying container is located, so as to generate strong eccentric excitation force. The vibration trajectories of all points in the drying container are elliptical motions with different directions and different major and minor axes. Such eccentric excitation force makes the materials in the drying container close to the exciter 10 side to be subjected to great energy compression. The materials are squeezed to the wall of the drying container and flow upward along the wall. At this time, the materials in the central part of the drying container flow to the side of the exciter 10 under the action of the eccentric excitation force to supplement the low-density area caused by the high-energy compression area. Then, the materials are also compressed to flow to the wall side of the drying container and flow along the wall. The embodiment solves the problem that the vibration trajectory of the existing horizontal vibration vacuum dryer is circular motion and the materials in the drying container are concentrically layered circular motion. Therefore, the materials in the central area do not flow smoothly, the drying is uneven, and the larger the container is, the more prominent this phenomenon is. Therefore, there is no horizontal vibration vacuum dryer with a capacity greater than three cubic meters successfully produced and used in China at present.

[0054] The embodiment can design and produce various super-large horizontal eccentric vibration vacuum dryers with a maximum of 50 cubic meters, fill the gap of such dryers at home and abroad, and greatly meet the needs of the current domestic chemical, pharmaceutical, new energy, and new material industries for large, efficient, and environmentally friendly dryers.

[0055] In addition, the hot air injection pipe 22 is additionally arranged in the drying container of the embodiment, which combines convection drying and conduction drying, has high thermal efficiency, greatly shortens the drying time, and solves the problems of some special materials in the vacuum drying process. For example, for the drying of new energy materials, the initial moisture content of the material is 20%, and the product moisture content is required to be less than 0.1%. The horizontal vibration vacuum dryer produced abroad is used for drying, and the drying time is several hours, and there is a serious wall sticking and caking phenomenon. The same initial moisture content of the material is used for drying by the dryer of the embodiment, and the same heating temperature is used for drying. The hot air injection is performed for the first hour, the vibration fluidized bed drying is performed, the sampling detection shows that the moisture content is 7%, and then the vacuum drying is performed. The sampling detection shows that the standard is reached after three hours, the effect is remarkable, and the energy is saved.

[0056] Application Example One

[0057] A raw material: the initial moisture content is 16%, the product moisture content is required to be ≤1%, the allowed drying temperature is <80°C, and the drying process is as follows:

[0058] 1. Turn on the controller and connect the power supply;

[0059] 2. Set the heat medium (water) temperature to 60°C and the vacuum to -0.098 Mpa on the controller operation interface;

[0060] 3. Start the motor 19;

[0061] 4. Open the control valve at the charging port 5 and charge;

[0062] 5. After charging, close the control valve at the charging port 5;

[0063] 6. Open the control valve at the heat medium inlet 27 and the control valve at the heat medium outlet 28, and the heat medium enters between the inner container 2 and the jacket 3 for heating circulation;

[0064] 7. Open the vacuum system, open the control valve at the vacuum port 8, the vacuum system performs vacuumization on the inner container 2, and the horizontal eccentric vibration vacuum dryer enters the vacuum drying state;

[0065] 8. Maintain the vacuum at -0.098 Mpa;

[0066] 9. The thermocouple 29 transmits the material temperature information to the controller, and the operation interface reflects that the material starts to rise in temperature, maintains for a long period of time after rising to a certain temperature, about 4 hours, and then the temperature starts to rise sharply and gradually approaches the heat medium temperature:

[0067] 10. Open the control valve at the sampling port 36 to sample and check the moisture content of the material;

[0068] 11. When the moisture content of the material is ≤1%, stop the circulation of the heat medium;

[0069] 12. Close the control valve at the vacuum port 8 to stop the vacuum;

[0070] 13. Open the control valve at the air inlet port 26 (26) to restore the normal pressure in the inner container 2;

[0071] 14. Open the control valve at the discharge port to discharge the material.

[0072] Application Example Two

[0073] A new material with an initial moisture content of 20% and a product moisture content requirement of ≤0.3%, with a drying temperature of <140℃, and the product is prone to caking and sticking to the wall. The drying process is as follows

[0074] 1. Turn on the controller and connect the power supply;

[0075] 2. Set the heat medium (heat conducting oil) temperature to 130℃, the vacuum to -0.098Mpa, and the hot air temperature to 130℃ on the controller operation interface;

[0076] 3. Start the motor 19;

[0077] 4. Open the control valve at the charging port 5 to charge the material:

[0078] 5. After charging is completed, close the control valve at the charging port 5;

[0079] 6. Open the control valve at the hot air outlet port 31 to connect it to the external dust removal system;

[0080] 7. Open the control valve at the hot air inlet port 23, and 130℃ hot air enters the hot air injection pipe 22, and is sprayed out of the injection holes to collide with the material and form a vibrating fluidized bed;

[0081] 8. After one hour, the material is raised to above 100℃, the control valve at the heat medium inlet port 27 and the control valve at the heat medium outlet port 28 are opened, and 130℃ heat conducting oil enters between the inner container 2 and the jacket 3 for heating circulation;

[0082] 9. Close the control valve at the hot air inlet port 23 and the control valve at the hot air outlet port 31 to end the hot air convection drying;

[0083] 10. Open the control valve at the vacuum port 8 to connect the inner container 2 to the vacuum system and enter the vacuum drying program;

[0084] 11. Three hours later, the material temperature is close to 130℃, open the control valve at the sampling port 36 to take sample, and detect the moisture content of the material;

[0085] 12. When the moisture content of the material meets the standard, close the control valve at the hot coal inlet and the control valve at the heat medium outlet 28, and stop the circulation of the heat medium;

[0086] 13. Close the control valve at the vacuum port 8 to stop the vacuum;

[0087] 14. Open the control valve at the air inlet 26 to restore the normal pressure in the inner container 2;

[0088] 15. Open the control valve at the discharge port to discharge the material, and the material is not caked and not adhered to the wall.

[0089] Application Example Three

[0090] A chemical raw material, crystalline suspension, requires that the moisture content of the product is 3%, and the allowable drying temperature is <110℃, and the drying process is as follows:

[0091] 1. Turn on the controller and connect the power supply;

[0092] 2. Set the heat medium (heat conducting oil) temperature to 110℃, the vacuum to -0.098Mpa, and the hot air temperature to 110℃ on the operation interface of the controller;

[0093] 3. Start the motor 19;

[0094] 4. Open the control valve at the air inlet 26 to connect the feeding system, and the liquid is input into the inner container 2 through the control valve at the air inlet 26;

[0095] 5. Open the control valve at the liquid inlet and outlet port 25, and the control valve at the liquid inlet and outlet port 25 is connected to the vacuum filtration system, the liquid enters the vacuum filtration program, and at this time, due to the vibration effect, the liquid rapidly flows on the filter screen 24, constantly refreshing the filtration interface, and the filtration speed is fast;

[0096] 6. When the liquid input is completed, close the control valve at the air inlet 26, and continue the vacuum filtration for half an hour;

[0097] 7. Close the control valve at the liquid inlet and outlet port 25, open the control valve at the air inlet 26, and the control valve at the air inlet 26 is connected to the water system to inject a certain amount of water into the inner container 2, and enter the washing program;

[0098] 8. After half an hour, open the control valve at the liquid inlet and outlet port 25, and close the control valve at the air inlet 26, and enter the vacuum filtration;

[0099] 9. After half an hour, close the control valve at the liquid inlet and outlet port 25, and the washing and filtration program is completed;

[0100] 10. Open the control valve at the hot air outlet 31 to connect with the external dust removal system;

[0101] 11. Open the control valve at the hot air inlet 23 to set the 110℃ hot air into the hot air injection pipe 22, and the hot air is ejected from the injection hole to collide with the material, and the material is boiled to form a vibrating fluidized bed;

[0102] 12. After 1 hour, the material temperature rises to about 90℃, open the control valve at the heat medium inlet 27 and the control valve at the heat medium outlet 28 to set the 110℃ temperature of the heat conducting oil into the inner container 2 and the jacket 3 to perform heating circulation;

[0103] 13. Close the control valve at the hot air inlet 23 and the control valve at the hot air outlet 31 to end the hot air convection drying;

[0104] 14. Open the control valve at the vacuum port 8 to connect the inner container 2 with the vacuum system to enter the vacuum drying program;

[0105] 15. After two hours, the material bed temperature approaches 110℃, open the control valve at the sampling port 36 to take samples for detection;

[0106] 16. After the moisture content of the material meets the standard, close the control valve at the heat medium inlet 27 and the control valve at the heat medium outlet 28 to stop the circulation of the heat medium;

[0107] 17. Close the control valve at the vacuum port 8 to stop vacuumizing;

[0108] 18. Open the control valve at the air inlet 26 to restore the normal pressure in the inner container 2;

[0109] 19. Open the control valve at the discharge port to discharge the material.

[0110] Note: In the above operation program, except for the sampling and the final discharge program which are manually operated, the remaining programs can be automatically operated by the control system set program.

[0111] In the specification, specific examples are applied to explain the principles and implementation modes of the present application, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A horizontal eccentric vibration vacuum dryer, characterized in that: The device includes a base, a drying container, a vibration system, and a hot air jet pipe. The drying container is used to hold materials and is horizontally and inclinedly mounted on the base. A spring is provided between the drying container and the base. The vibration system includes at least one vibration assembly, which includes a vibrator and a counterweight. The vibrators of adjacent vibration assemblies are connected in sequence. The vibrator and the counterweight are respectively located on both sides of the drying container, and both are located on the extension line of the horizontal diameter of the drying container. The hot air jet pipe extends into the drying container from one end, and one end of the hot air jet pipe is located outside the drying container and is used to introduce hot air. The hot air jet pipe is provided with a plurality of jet holes, which are located near the lower part of the drying container. The distance from the center of rotation of the vibrator to the center of the drying container is greater than the radius of the drying container. This eccentricity causes the vibrator to generate a torque on the drying container and the material inside when it rotates. Under the combined action of the spring and the counterweight, the vibrator undergoes eccentric vibration, and the drying container moves in an elliptical motion. The material inside the drying container experiences uneven vibration. The material on the side closer to the vibrator moves in a vertical elliptical motion, while the material on the side farther from the vibrator moves in a horizontal linear elliptical motion. Under the combined force of these two elliptical motions caused by this eccentric vibration, the material flows and mixes intensely within the drying container, improving the energy input in the central region.

2. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: The drying container includes an inner liner, a jacket, an insulation layer, and an outer cladding layer arranged from the inside out. A gap is provided between the inner liner and the jacket, and the inner liner and the jacket are connected by a number of pipe piles.

3. The horizontal eccentric vibration vacuum dryer according to claim 2, characterized in that: The drying container has a feeding port at its upper part, which communicates with the inner liner and is equipped with a control valve. A discharge port at the lowest point of the drying container is also connected to the inner liner and is equipped with a discharge valve. A heat medium inlet at the lower part of the drying container communicates with the space between the inner liner and the jacket and is equipped with a control valve. The heat medium inlet is used to connect with the heat medium. A heat medium outlet at the upper part of the drying container communicates with the space between the inner liner and the jacket and is equipped with a control valve. A sampling port at the lower part of the drying container is also connected to the inner liner.

4. The horizontal eccentric vibration vacuum dryer according to claim 3, characterized in that: The drying container has an air inlet at its upper part, which is connected to the inner liner; the drying container has a liquid inlet / outlet at its lower part, which is connected to the inner liner, and a control valve is provided at the liquid inlet / outlet; a filter screen is provided in the inner liner, which is located near the lower part of the inner liner, the liquid inlet / outlet is located below the filter screen, and the sampling port is located above the filter screen.

5. The horizontal eccentric vibration vacuum dryer according to claim 2, characterized in that: The upper part of the drying container is provided with a manhole, which is connected to the inner liner. An internal filter is provided in the manhole. A manhole cover is provided at the manhole, and a vacuum port is provided on the manhole cover. A control valve is provided at the vacuum port, and the vacuum port is connected to a vacuum pipeline through a flexible hose.

6. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: The drying container is provided with a plurality of temperature measuring tubes along its axial direction. Each temperature measuring tube is filled with silicone oil and a thermocouple is installed in each temperature measuring tube.

7. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: One end of the hot air jet pipe is provided with a hot air inlet for introducing hot air. The other end of the hot air jet pipe is located in the drying container and is closed. The drying container is provided with a hot air outlet. Hot air enters the hot air jet pipe through the hot air inlet and is then ejected from the jet hole, fully exchanging heat with the material in the drying container. The gas that carries away moisture is discharged through the hot air outlet.

8. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: The exciter is a vibration motor.

9. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: The vibrator includes a bearing housing, a bearing, a rotating shaft, and two eccentric block assemblies. The two eccentric block assemblies are respectively disposed at both ends of the bearing housing. The rotating shaft is rotatably connected to the bearing housing through the bearing. Each eccentric block assembly includes two sector-shaped steel plates, which are sleeved on the rotating shaft. The relative positions of the two sector-shaped steel plates in the same eccentric block assembly can be adjusted.

10. The horizontal eccentric vibration vacuum dryer according to claim 1, characterized in that: The vibrator is connected to the motor, and the vibrators of adjacent vibrating assemblies are connected in sequence via universal couplings.

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