Drying machine and continuous vacuum drying system thereof
By introducing a vacuum conveying mechanism into the dryer and sealing it with the barrel, continuous material conveying and stable vacuum are achieved, solving the problems of low dryer production efficiency and dust explosion risk, and realizing the effects of continuous drying and stable vacuum.
Patent Information
- Application Number
- CN202422776765.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Existing dryers require batch operation, resulting in low production efficiency. Furthermore, continuous feeding cannot guarantee a stable internal vacuum, leading to a risk of dust explosion.
Design a dryer and its continuous vacuum drying system. The dryer adopts a vacuum conveying mechanism that is sealed to the barrel to realize the continuous conveying of materials. The vacuum degree is maintained by the conveying mechanism and the vacuum pump to prevent air from entering and ensure the stability of the vacuum degree.
It enables continuous material drying without shutting down the machine, improving production efficiency, avoiding the risk of dust explosion, and ensuring the stability of vacuum levels.
Smart Images
Figure CN223869686U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of drying machine, especially relates to a drying machine and continuous vacuum drying system thereof. BACKGROUND
[0002] When the powder is dried, the drying machine needs to maintain a certain vacuum degree inside, so that when the powder is heated, the accident of dust explosion occurs.
[0003] But the above processing mode needs to load by batch, and when the batch is replaced, the equipment needs to be stopped, the loading and unloading port is opened, and after unloading and reloading, vacuum is extracted again, and the next batch operation is carried out, so that the production efficiency is low.
[0004] On the other hand, the continuous feeding mechanism in the related art cannot guarantee the sealing performance of the connection between the feeding mechanism and the drying machine when feeding the drying machine, so that during the feeding process, air will continue to be introduced into the drying machine, resulting in that even if the vacuum pump of the drying machine continues to work, the internal vacuum degree cannot be reduced to the ideal range.
[0005] Therefore, it is urgent to design a drying machine and continuous vacuum drying system to solve the technical problems that the existing drying machine needs to be operated in batches, the efficiency is low, and the internal vacuum degree cannot be guaranteed when continuously operating.
[0006] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, it can contain information which does not constitute prior art. CONTENT OF THE UTILITY MODEL
[0007] The present application provides a drying machine and a continuous vacuum drying system.
[0008] In a first aspect, the present application provides a barrel, which includes a barrel having a feeding port and a discharging port, a conveying mechanism located between the feeding port and the discharging port, at least one vacuum feeding mechanism, wherein
[0009] The vacuum feeding mechanism is in sealing connection with the feeding port, and the vacuum feeding mechanism continuously feeds into the barrel, and the conveying mechanism continuously carries the material from the feeding port to the discharging port.
[0010] The vacuum feeding mechanism is in sealing connection with the feeding port, and the vacuum feeding mechanism continuously feeds into the barrel, and the conveying mechanism continuously carries the material from the feeding port to the discharging port.
[0011] The vacuum feeding mechanism continuously feeds into the barrel, and the conveying mechanism continuously carries the material from the feeding port to the discharging port.
[0012] In an optional embodiment, the vacuum feeding mechanism includes a hopper and two feeding valves, and the two feeding valves are respectively installed at the feeding end and the discharging end of the hopper.
[0013] The discharging end of the feeding valve is connected with the feeding port.
[0014] In one alternative embodiment, the feed valve is a butterfly valve.
[0015] In one optional embodiment, the conveying mechanism includes a conveying shaft and spiral drying blades, the conveying shaft being rotatably disposed inside the barrel, and the spiral drying blades being spirally disposed outside the conveying shaft; wherein
[0016] The conveying shaft has a drying channel;
[0017] The spiral drying blades have a drying chamber inside.
[0018] The drying channel is connected to the drying chamber.
[0019] In one alternative embodiment, a plurality of microwave transmitters are mounted on the outer wall of the barrel.
[0020] In one alternative implementation, the vacuum conveying mechanism is a peristaltic pump.
[0021] Secondly, this disclosure also provides a continuous vacuum drying system, including a plurality of dryers as described above, wherein each dryer is arranged sequentially along a horizontal direction;
[0022] The feed inlets and discharge outlets of two adjacent dryers are connected in sequence.
[0023] In one alternative embodiment, at least one of the barrels is equipped with a vacuum pump.
[0024] In one optional embodiment, a vacuum conveying mechanism is installed at the feeding port of the first barrel and the discharging port of the last barrel.
[0025] Furthermore, the material enters the continuous vacuum drying system through the vacuum conveying mechanism connected to the first barrel, and after passing through each barrel in sequence, it is discharged from the continuous vacuum drying system through the vacuum conveying mechanism connected to the last barrel.
[0026] In one alternative implementation, the vacuum conveying mechanism is a peristaltic pump.
[0027] The beneficial effect of this utility model is that by setting a vacuum conveying mechanism and sealing it with the barrel, the vacuum degree inside the dryer is kept within a preset range. The vacuum conveying mechanism continuously feeds the material into the barrel, and the conveying mechanism continuously transports the material to the discharge port, so as to achieve continuous drying of the material under vacuum.
[0028] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.
[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0031] Figure 1 This is a first structural schematic diagram of a dryer provided in an embodiment of the present disclosure;
[0032] Figure 2 A cross-sectional view of a conveyor shaft provided in an embodiment of this disclosure;
[0033] Figure 3 This is a schematic diagram of the structure of a vacuum conveying mechanism provided in an embodiment of the present disclosure;
[0034] Figure 4 This is a first structural schematic diagram of a continuous vacuum drying system provided in an embodiment of the present disclosure;
[0035] Figure 5 This is a schematic diagram of a second structure of a dryer provided in an embodiment of the present disclosure;
[0036] Figure 6 A third structural schematic diagram of a dryer provided in an embodiment of this disclosure;
[0037] Figure 7 This is a second structural schematic diagram of a continuous vacuum drying system provided in an embodiment of the present disclosure;
[0038] Figure 8 This is a third structural schematic diagram of a continuous vacuum drying system provided in an embodiment of the present disclosure.
[0039] In the picture:
[0040] 1. Barrel body; 11. Feed inlet; 12. Discharge outlet; 13. Microwave transmitter;
[0041] 2. Conveying mechanism; 21. Conveying shaft; 211. Drying channel; 22. Spiral drying blades; 221. Drying chamber;
[0042] 3. Vacuum conveying mechanism; 31. Hopper; 32. Feed valve;
[0043] 4. Vacuum pump. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0045] Research has found that maintaining a certain degree of vacuum inside the dryer is necessary during powder drying to prevent dust explosions during powder heating. However, the above processing method requires batch feeding; changing batches necessitates shutting down the equipment, opening the loading and unloading ports, unloading and reloading, re-vacuuming, and then running the next batch, resulting in low production efficiency. Furthermore, the type and size of powder used vary significantly depending on the type and batch size.
[0046] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.
[0047] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0049] Based on the above research, and referring to Figure 1This disclosure provides a dryer, including: a barrel 1, a conveying mechanism 2, at least one vacuum conveying mechanism 3, and a vacuum pump 4. The barrel 1 is mounted on a support and has a feed port 11 and a discharge port 12 for feeding and discharging materials. The vacuum pump 4 is adapted to extract air from the barrel 1 to maintain a certain vacuum level inside the barrel 1, preventing explosions, especially when drying powder materials. The main body of the conveying mechanism 2 is inserted into the barrel 1 and sealed to it. The conveying mechanism 2 is located between the feed port 11 and the discharge port 12, and can transport materials from the feed port 11 to the discharge port 12, enabling material flow within the barrel 1. The vacuum conveying mechanism 3 is installed on one side of the feed port 11 and is sealed to it. The vacuum conveying mechanism 3 can continuously feed materials into the barrel 1 while maintaining a constant vacuum level inside the barrel 1. In some alternative embodiments, the discharge port 12 of the barrel 1 is connected to a sealed container, and the material discharged from the discharge port 12 can be stored in the sealed container.
[0050] Reference Figure 1 In at least one embodiment, the discharge port 12 is also connected to a vacuum conveying mechanism 3. Material exiting from the discharge port 12 enters through the inlet of the vacuum conveying mechanism 3 and exits through its outlet, ensuring that no air enters the barrel 1 during the feeding process. An open container can also be installed at the outlet of the vacuum conveying mechanism 3, eliminating concerns about the limited storage capacity of sealed containers. Therefore, by sealing the barrel 1 with both the conveying mechanism 2 and the two vacuum conveying mechanisms 3, the barrel 1 remains completely sealed throughout the feeding, conveying, and discharging process. This ensures that after the vacuum pump 4 removes air from the barrel 1, a stable vacuum level is maintained inside, preventing explosions when drying certain special materials. Furthermore, the conveying mechanism 2 and the vacuum conveying mechanism 3 enable continuous conveying, allowing the entire equipment to continuously feed, convey, and discharge without stopping, thus avoiding the need for batch feeding and drying in existing dryers and improving production efficiency.
[0051] Reference Figure 1 and Figure 2 To achieve the material handling effect of the conveying mechanism 2, the conveying mechanism 2 includes a drive motor, a conveying shaft 21, and spiral drying blades 22. The drive motor is also mounted on a bracket and is drively connected to the conveying shaft 21. The conveying shaft 21 is inserted into the barrel 1 and rotatably connected to the barrel 1. The spiral drying blades 22 are spirally arranged on the outside of the conveying shaft 21. The drive motor drives the conveying shaft 21 to rotate, which in turn causes the conveying shaft 21 to drive the spiral drying blades 22 to rotate, thereby achieving the material conveying effect.
[0052] ReferenceFigure 1 In some embodiments, in order to achieve the effect of drying the material inside the barrel 1, a plurality of microwave transmitters 13 are installed on the outer wall of the barrel 1 to emit microwaves into the barrel 1, which act on the water molecules in the material inside the barrel 1, so that the water in the material evaporates and is then extracted by the vacuum pump 4.
[0053] Reference Figure 2 In at least one embodiment, the conveying shaft 21 has a drying channel 211, and the spiral drying blades 22 have a drying chamber 221. The drying channel 211 is connected to the drying chamber 221. One end of the conveying shaft 21, away from the drive motor, extends out of the barrel 1 and is connected to an external pipeline for supplying a heat source to the inside of the conveying shaft 21. The heat source enters the drying chamber 221 through the drying channel 211 to heat the spiral drying blades 22, thereby enhancing the drying effect of the material while it is being conveyed. Alternatively, in some embodiments, for special materials or processes with special drying requirements, a cold source can be supplied to the drying channel 211 to cool the material through the spiral drying blades 22.
[0054] Reference Figure 1 In at least one embodiment, the barrel 1 is designed as a horizontal structure. The feed inlet 11 and discharge outlet 12 of the barrel 1 are respectively located at the top and bottom of the barrel 1, and the conveying shaft 21 is also horizontally installed inside the barrel 1. The conveying shaft 21 can convey the material from the feed inlet 11 to the discharge outlet 12 of the barrel 1, and during the conveying process, the material is fully dried by the heat source within the microwave transmitter 13 and the drying channel 211.
[0055] Reference Figure 5 In at least one embodiment, the barrel 1 is designed as a vertical structure, with the feed inlet 11 and discharge outlet 12 located at the top and bottom of the barrel 1, respectively. The conveying shaft 21 is also adapted to be vertically installed inside the barrel. The conveying shaft 21 can convey the material from the feed inlet 11 to the discharge outlet 12 of the barrel 1, and during the conveying process, the material is fully dried by the heat source in the microwave transmitter 13 and the drying channel 211.
[0056] In addition, refer to Figure 6 In at least one embodiment, the vacuum conveying mechanism 3 is a peristaltic pump, that is, the feed port 11 and the discharge port 12 of the vertically installed barrel 1 are respectively equipped with peristaltic pumps to drive the continuous vacuum feeding and continuous vacuum unloading of materials.
[0057] It should be noted that the barrel 1 can be installed in a horizontal or vertical manner, or even at an angle. The continuous vacuum drying effect achieved by using the technical concept of this utility model during the feeding, conveying and unloading processes is within the protection scope of this utility model.
[0058] Reference Figure 3 In at least one embodiment, the vacuum conveying mechanism 3 includes a hopper 31 and two feed valves 32, which are respectively installed at the inlet and outlet ends of the hopper 31. The outlet end of the feed valve 32 is connected to the feed port 11. Optionally, the feed valve 32 is a butterfly valve. Figure 3 For example, the upper end of the hopper 31 is designated as the inlet end, and the lower end as the outlet end. The feed valve 32 located above the hopper 31 is designated as the upper feed valve 32, and the feed valve 32 located below the hopper 31 is designated as the lower feed valve 32. After the material is fed into the vacuum conveying mechanism 3, it reaches the upper feed valve 32. At this time, the upper feed valve 32 opens, and the lower feed valve 32 closes, allowing the material to enter the hopper 31. After the material enters the hopper 31, it fills the bottom of the hopper 31, while squeezing the gas in the hopper 31 to the top. Then, the lower feed valve 32 opens, and the upper feed valve 32 closes, allowing the material to enter the barrel 1 through the lower feed valve 32. Then, when the material in the hopper 31 decreases to a certain level, the lower feed valve 32 closes, and the upper feed valve 32 opens, allowing material to be fed into the hopper 31 again. By alternating between opening the upper feed valve 32 and the lower feed valve 32, continuous feeding of material into the barrel 1 can be achieved.
[0059] This disclosure also provides a continuous vacuum drying system, referring to... Figure 4 The system includes several dryers as described above. The feed inlets 11 and discharge outlets 12 of adjacent dryers are connected sequentially to form a continuous vacuum drying system. The feed inlet 11 of the first dryer and the discharge outlet 12 of the last dryer are connected to a vacuum conveying mechanism 3. With this configuration, materials that cannot be sufficiently dried by a single dryer can be continuously dried by connecting multiple dryers sequentially as needed. Furthermore, based on this configuration, any number of dryers can be combined in this manner to obtain a specific drying system that meets actual production requirements, without the need to purchase multiple different dryer models and then select different models according to needs.
[0060] Reference Figure 4 In at least one embodiment, for materials that require normal or low temperature discharge during feeding, a cold source can be supplied to the conveyor shaft 21 of the last dryer while keeping the heat source in the conveyor shaft 21 of the previous dryer unchanged, so as to ensure that the material is cooled when passing through the last dryer and achieves normal or even low temperature discharge.
[0061] Reference Figure 4 In at least one embodiment, after multiple dryers are spliced together to form a drying system, a vacuum pump 4 can be installed on one or more of the barrels 1 to maintain the internal vacuum and extract the water vapor discharged during the drying process.
[0062] This disclosure also provides a continuous vacuum drying system, referring to... Figure 7 It includes several dryers as described above, arranged sequentially in a horizontal direction, i.e. Figure 7 For example, the dryers are arranged sequentially from left to right, with the feed inlets 11 and discharge outlets 12 of adjacent dryers connected in sequence to form a continuous vacuum drying system. The feed inlet 11 of the first dryer and the discharge outlet 12 of the last dryer are connected to the vacuum conveying mechanism 3. With this arrangement, materials that cannot be sufficiently dried by a single dryer can be continuously dried by connecting multiple dryers sequentially as needed. Furthermore, based on this arrangement, any number of dryers can be combined in this manner to obtain a specific drying system that meets actual production requirements, without the need to purchase multiple different dryer models and then select different models according to needs.
[0063] refer to Figure 8 In at least one embodiment, the vacuum conveying mechanism 3 of the continuous vacuum drying system is a peristaltic pump, which allows the material to continuously enter the system under the action of the peristaltic pump without introducing excessive air, thereby ensuring that the vacuum degree inside the continuous vacuum drying system is maintained within a certain range. Similarly, during material feeding, the peristaltic pump can also be used to ensure that excessive air is not introduced during the material feeding process, further ensuring that the vacuum degree inside the continuous vacuum drying system is maintained within a certain range.
[0064] This disclosure also provides a method for operating a drying system, which is performed using the continuous vacuum drying system described above, and includes the following steps:
[0065] Step S1: The material is poured into the feed port of the first vacuum conveying mechanism 3, which feeds the material into the barrel 1 through the feed port 11.
[0066] In step S2, the conveying mechanism 2 transports the material to the discharge port 12, and the material falls from the discharge port 12 into the next barrel 1;
[0067] Step S3, repeat step S2 until the material reaches the discharge port 12 of the last barrel 1;
[0068] In step S4, the material enters the inlet of the vacuum conveying mechanism 3 through the outlet 12, and the vacuum conveying mechanism 3 discharges the material from the barrel 1.
[0069] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification; its technical scope must be determined by the scope of the claims.
Claims
1. A continuous vacuum drying system, characterized in that, include: Several dryers are arranged sequentially along a horizontal direction; The dryer includes a barrel body with a feed inlet (11) and a discharge outlet (12). The feed inlet (11) and discharge outlet (12) of two adjacent dryers are connected in sequence; A conveying mechanism (2) is located between the feed inlet (11) and the discharge outlet (12); At least one vacuum conveying mechanism (3); wherein The vacuum conveying mechanism (3) is sealed to the loading port (11); and The vacuum conveying mechanism (3) continuously feeds material into the barrel (1), and the conveying mechanism (2) continuously transports the material from the loading port (11) to the discharge port (12).
2. The continuous vacuum drying system as described in claim 1, characterized in that, The vacuum conveying mechanism (3) includes a hopper (31) and two feed valves (32), which are respectively installed at the feed end and the discharge end of the hopper (31); The discharge end of the feed valve (32) is connected to the feed port.
3. The continuous vacuum drying system as described in claim 2, characterized in that, The feed valve (32) is a butterfly valve.
4. The continuous vacuum drying system as described in claim 1, characterized in that, The conveying mechanism (2) includes a conveying shaft (21) and spiral drying blades (22). The conveying shaft (21) is rotatably mounted inside the barrel (1), and the spiral drying blades (22) are spirally mounted on the outside of the conveying shaft (21). The conveying shaft (21) has a drying channel (211). The spiral drying blade (22) has a drying chamber (221) inside. The drying channel (211) is connected to the drying chamber (221).
5. The continuous vacuum drying system as described in claim 1, characterized in that, Several microwave transmitters (13) are installed on the outer wall of the barrel (1).
6. The continuous vacuum drying system as described in claim 1, characterized in that, The vacuum conveying mechanism (3) is a peristaltic pump.
7. The continuous vacuum drying system as described in claim 1, characterized in that, At least one of the barrels (1) is equipped with a vacuum pump (4).
8. The continuous vacuum drying system as described in claim 1, characterized in that, Vacuum conveying mechanisms (3) are installed at the feeding port (11) of the first barrel (1) and the discharge port (12) of the last barrel (1). In addition, the material enters the continuous vacuum drying system through the vacuum conveying mechanism (3) connected to the first barrel (1), and after passing through each barrel (1) in sequence, it is discharged from the continuous vacuum drying system through the vacuum conveying mechanism (3) connected to the last barrel (1).