Tobacco leaf vacuum moisture regaining machine of intelligent combined vacuum device
By designing an intelligent combined vacuum device, the automatic coordinated operation and energy consumption optimization of the vacuum rehumidifier are realized, solving the problems of high energy consumption and equipment stability of traditional vacuum rehumidifiers, and improving the operational stability and economy of the production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU ZHONGHANG WEIER TECH
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional vacuum rehumidifiers suffer from overcapacity in the later stages of operation, resulting in high energy consumption and frequent shutdowns due to sudden malfunctions, which can disrupt production line operations.
The system employs an intelligent combined vacuum device, which includes a combination of multiple Roots vacuum pumps and screw vacuum pumps. It achieves automatic coordinated operation through self-controlled vacuum valves and bypass valves, adjusts the combination configuration according to changes in pumping load, and is equipped with a cooling component and a vapor trap to reduce the load on the vacuum pumps.
This reduces the operating load on the vacuum pump, decreases energy consumption, prevents equipment downtime due to sudden malfunctions, and improves the stability and economy of the production line.
Smart Images
Figure CN224250669U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tobacco processing technology, specifically to a tobacco vacuum rehumidification machine with an intelligent combined vacuum device. Background Technology
[0002] Tobacco vacuum rehumidifiers are mainly used in cigarette factories and flue-cured tobacco plants. They are key equipment certified by the State Tobacco Monopoly Administration. Their working principle is as follows: tobacco leaves with an incoming moisture content of approximately 12% are placed in a vacuum chamber, evacuated to a set vacuum level, and then humidifying steam is released into the chamber, making the tobacco leaves moist and soft. Depending on the process requirements, multiple evacuation and humidification processes can be performed. Depending on the usage environment and requirements, especially when processing intensity is low, vacuum rehumidifiers are also called tobacco leaf softening machines. They can improve the tobacco leaves' resistance to dryness and breakage, and enhance their processing durability. Softened tobacco leaves reduce breakage and improve sorting efficiency. Vacuum rehumidifiers also have the functions of killing insects and eggs, reducing the green and unpleasant odors of tobacco leaves, and improving the color and flavor of tobacco leaves. Therefore, their application in the tobacco industry is becoming increasingly widespread.
[0003] A vacuum rehumidifier is a sealed container. As the working time increases, the vacuum level increases, and the load decreases. However, traditional vacuum rehumidifiers use processing equipment with fixed parameters, which leads to a situation where the equipment is underpowered in the later stages of operation. This is not conducive to reducing the cost of tobacco processing. The energy consumption of vacuum rehumidification accounts for a large proportion of the entire processing process. The State Tobacco Monopoly Administration requires continuous improvement of the "green content" and "gold content" of the industry. Tobacco processing enterprises face significant pressure to conserve energy and reduce emissions. Therefore, there is an urgent need for a smart combined vacuum device for tobacco vacuum rehumidifiers to improve the above problems. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to propose a smart combined vacuum device for tobacco leaf vacuum rehumidification, in order to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.
[0006] To achieve the above objectives, one embodiment of this utility model provides a tobacco vacuum rehumidifier with an intelligent combined vacuum device, including a rehumidification chamber. A first pipe is provided on the top of the rehumidification chamber, and a self-controlled main vacuum valve is provided on the outer surface of the first pipe. A filter is provided on one side of the self-controlled main vacuum valve, a refrigeration component is provided on one side of the refrigeration component, a steam trap is provided on one side of the steam trap, a modular vacuum unit is provided on one side of the steam trap, a water collection tank is provided on one side of the water collection tank, and a self-controlled drain valve is provided on one side of the water collection tank.
[0007] The present invention is further configured such that: the refrigeration component includes a refrigeration unit, an energy storage buffer tank is provided on one side of the refrigeration unit, and a low-temperature circulating pump is provided on one side of the energy storage buffer tank.
[0008] By adopting the above technical solution, a cold source can be provided for the steam trap.
[0009] The present invention is further configured such that: a condensation pipe is provided on one side of the energy storage buffer tank, and the energy storage buffer tank, the cryogenic circulating pump and the steam trap are connected through the condensation pipe.
[0010] By adopting the above technical solution, low-temperature water vapor can be introduced into the steam trap.
[0011] The present invention is further configured such that: the modular vacuum unit includes an A1 Roots pump, an A2 Roots pump is provided on one side of the A1 Roots pump, a B1 Roots pump is provided on one side of the A1 Roots pump, a B2 Roots pump is provided on one side of the B1 Roots pump, a C backing screw pump is provided on one side of the B2 Roots pump, and a D backing screw pump is provided on one side of the C backing screw pump.
[0012] By adopting the above technical solutions, the combination configuration can be adjusted in a timely manner according to changes in the air extraction load.
[0013] The present invention is further configured such that: one side of the A1 Roots pump is provided with an A channel, one side of the B1 Roots pump is provided with a B channel, one side of the C backing screw pump is provided with a C channel, and one side of the D backing screw pump is provided with a D channel.
[0014] By adopting the above technical solution, it is possible to generate a vacuum in the equipment.
[0015] The present invention is further configured such that: the outer surfaces of channels A, B, C and D are all provided with self-controlled vacuum valves, and the outer surface of channel B is provided with a bypass valve.
[0016] By adopting the above technical solutions, the equipment can be automatically coordinated and switched on and off.
[0017] In summary, the beneficial technical effects of this utility model are as follows:
[0018] 1. In this intelligent combined vacuum device, the tobacco vacuum rehumidifier extracts gas from the vacuum chamber, which is then filtered, condensed, and dehydrated before entering the vacuum pump. This reduces the load on the vacuum pump and is beneficial to its normal operation.
[0019] 2. The tobacco leaf vacuum rehumidifier of this intelligent combined vacuum device uses multiple front-stage screw vacuum pumps in parallel. The load is large at startup, and multiple screw vacuum pumps are turned on. However, as the load decreases in the later stages of evacuation, some of the screw vacuum pumps can be turned off to reduce energy consumption. The combination of multiple Roots vacuum pumps and screw vacuum pumps allows for timely adjustment of the combination according to changes in the evacuation load. Furthermore, if any of the Roots vacuum pumps and screw vacuum pumps malfunctions, the combination can be adjusted promptly to ensure equipment operation and avoid equipment downtime due to sudden failures, which could affect the operation of the entire production line.
[0020] 3. For the tobacco vacuum rehumidifier of this intelligent combined vacuum device, a large-volume vacuum chamber requires a vacuum pump with a large air extraction capacity. However, if multiple small-capacity vacuum pumps are used in parallel, the procurement cost is actually lower and the economy is better.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0023] Figure 1 This is a schematic diagram of the structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the refrigeration component of this utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the vacuum unit of this utility model;
[0026] Figure 4 This is a schematic diagram of the structure of the B1 Roots pump of this utility model;
[0027] Figure 5 This is a structural schematic diagram of the A2 Roots pump of this utility model.
[0028] In the diagram: 1. Rehumidification chamber; 2. First pipeline; 3. Automatic main vacuum valve; 4. Filter; 5. Refrigeration assembly; 6. Steam trap; 7. Vacuum unit; 8. Water tank; 9. Automatic drain valve; 10. Refrigeration unit; 11. Energy storage buffer tank; 12. Cryogenic circulating pump; 13. Condensation pipeline; 14. A1 Roots pump; 15. A2 Roots pump; 16. B1 Roots pump; 17. B2 Roots pump; 18. C fore-screw pump; 19. D fore-screw pump; 20. Channel A; 21. Channel B; 22. Channel C; 23. Channel D; 24. Automatic vacuum valve; 25. Bypass valve. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0030] Example 1
[0031] Reference Figure 1 , Figure 2 and Figure 3 This utility model discloses an intelligent combined vacuum device for tobacco leaf vacuum rehumidification, comprising a rehumidification chamber 1, a first pipe 2 on the top of the rehumidification chamber 1, a self-controlled main vacuum valve 3 on the outer surface of the first pipe 2, a filter 4 on one side of the rehumidification chamber 1, a refrigeration component 5 on one side of the self-controlled main vacuum valve 3, a steam trap 6 on one side of the refrigeration component 5, a modular vacuum unit 7 on one side of the steam trap 6, a water tank 8 on one side of the steam trap 6, and a self-controlled drain valve 9 on one side of the water tank 8. The rehumidification chamber 1 is connected to the inlet of the filter 4 via the self-controlled vacuum valve 24, the outlet of the filter 4 is connected to the inlet of the steam trap 6, the outlet of the steam trap 6 is connected to the modular vacuum unit 7, the drain outlet of the filter 4 and the drain outlet of the steam trap 6 are connected to the inlet of the water tank 8, and the outlet of the water tank 8 is connected to a pneumatic valve.
[0032] Reference Figure 1 , Figure 2 and Figure 3 The refrigeration component 5 includes a refrigeration unit 10. An energy storage buffer tank 11 is provided on one side of the refrigeration unit 10. A low-temperature circulating pump 12 is provided on one side of the energy storage buffer tank 11, which can provide a cold source for the steam trap 6 and allow low-temperature water vapor to enter the steam trap 6. A condensation pipe 13 is provided on one side of the energy storage buffer tank 11. The energy storage buffer tank 11, the low-temperature circulating pump 12 and the steam trap 6 are connected through the condensation pipe 13, which allows low-temperature water vapor to enter the steam trap 6, thereby reducing the operating load and benefiting the normal operation of the vacuum pump.
[0033] Reference Figure 1 , Figure 2 and Figure 3The modular vacuum unit 7 includes an A1 Roots pump 14, with an A2 Roots pump 15, a B1 Roots pump 16, a B2 Roots pump 17, a C backing screw pump 18, and a D backing screw pump 19 on one side of the B2 Roots pump 17. This allows for timely adjustment of the combination configuration based on changes in the pumping load, preventing equipment downtime due to sudden malfunctions and ensuring the smooth operation of the entire production line. During production line operation, A channel 20 is provided on one side of A1 Roots pump 14, B channel 21 is provided on one side of B1 Roots pump 16, C channel 22 is provided on one side of C backing screw pump 18, and D channel 23 is provided on one side of D backing screw pump 19. These features can generate a vacuum in the equipment. Self-controlled vacuum valves 24 are provided on the outer surfaces of channels A 20, B 21, C 22, and D 23, and a bypass valve 25 is provided on the outer surface of channel B 21. This enables automatic coordination, on / off start and stop of the equipment.
[0034] Reference Figure 1 , Figure 2 and Figure 3 Channel A 20 is formed by sequentially connecting the inlet and outlet of the self-controlled vacuum valve 24 to the inlet and outlet of the A1 Roots pump 14 and the A2 Roots pump 15. Channel B 21 is formed by sequentially connecting the inlet and outlet of the self-controlled vacuum valve 24 to the inlet and outlet of the B1 Roots pump 16 and the B2 Roots pump 17. Channel C 22 is formed by sequentially connecting the inlet and outlet of the C backing screw pump 18. Channel D 23 is formed by sequentially connecting the self-controlled vacuum valve 24 to the inlet and outlet of the D backing screw pump 19. Channel A 20 is formed by sequentially connecting the self-controlled vacuum valve 24 to the inlet and outlet of the A1 Roots pump 14 and the A2 Roots pump 15. The inlet of channel 24, the inlet of the self-controlled vacuum valve 24 of channel B 21, and the inlet of the self-controlled bypass valve 25 are directly connected. The outlet of the self-controlled vacuum valve 24 of channel A 20, the outlet of the A2 Roots pump 15, and the outlet of the B2 Roots pump 17 are directly connected. The inlet of the self-controlled valve of channel C 22 is directly connected to the inlet of the self-controlled vacuum valve 24 of channel D 23. The outlets of channel A 20 and channel B 21 are directly connected to the inlets of channel C 22 and channel D 23. The C-stage screw pump 18 and the D-stage screw pump 19 can be oil-type screw vacuum pumps or dry screw vacuum pumps.
[0035] Example 2
[0036] Reference Figure 1 , Figure 2 and Figure 4This utility model discloses an intelligent combined vacuum device for tobacco leaf vacuum rehumidification, comprising a rehumidification chamber 1, a first pipe 2 on the top of the rehumidification chamber 1, a self-controlled main vacuum valve 3 on the outer surface of the first pipe 2, a filter 4 on one side of the rehumidification chamber 1, a refrigeration component 5 on one side of the self-controlled main vacuum valve 3, a steam trap 6 on one side of the refrigeration component 5, a modular vacuum unit 7 on one side of the steam trap 6, a water tank 8 on one side of the steam trap 6, and a self-controlled drain valve 9 on one side of the water tank 8. The rehumidification chamber 1 is connected to the inlet of the filter 4 via the self-controlled vacuum valve 24, the outlet of the filter 4 is connected to the inlet of the steam trap 6, the outlet of the steam trap 6 is connected to the modular vacuum unit 7, the drain outlet of the filter 4 and the drain outlet of the steam trap 6 are connected to the inlet of the water tank 8, and the outlet of the water tank 8 is connected to a pneumatic valve.
[0037] Reference Figure 1 , Figure 2 and Figure 4 The refrigeration component 5 includes a refrigeration unit 10. An energy storage buffer tank 11 is provided on one side of the refrigeration unit 10. A low-temperature circulating pump 12 is provided on one side of the energy storage buffer tank 11, which can provide a cold source for the steam trap 6 and allow low-temperature water vapor to enter the steam trap 6. A condensation pipe 13 is provided on one side of the energy storage buffer tank 11. The energy storage buffer tank 11, the low-temperature circulating pump 12 and the steam trap 6 are connected through the condensation pipe 13, which allows low-temperature water vapor to enter the steam trap 6, thereby reducing the operating load and benefiting the normal operation of the vacuum pump.
[0038] Reference Figure 1 , Figure 2 and Figure 4 The modular vacuum unit 7 includes an A1 Roots pump 14, a B1 Roots pump 16 on one side of the A1 Roots pump 14, a C fore-screw pump 18 on one side of the B1 Roots pump 16, and a D fore-screw pump 19 on one side of the C fore-screw pump 18. The combination can be adjusted promptly according to changes in the pumping load to avoid equipment downtime due to sudden malfunctions, which could affect the operation of the entire production line. An A channel 20 is located on one side of the A1 Roots pump 14, a B channel 21 on one side of the B1 Roots pump 16, a C channel 22 on one side of the C fore-screw pump 18, and a D channel 23 on one side of the D fore-screw pump 19. These features enable the equipment to generate a vacuum. Self-controlled vacuum valves 24 are installed on the outer surfaces of channels A 20, B 21, C 22, and D 23, and a bypass valve 25 is installed on the outer surface of channel B 21, enabling automatic coordination, on / off operation, and shutdown of the equipment.
[0039] Reference Figure 1 , Figure 2 and Figure 4Channel A 20 is formed by connecting the self-controlled vacuum valve 24 to the inlet and outlet of the A1 Roots pump 14 in sequence. Channel B 21 is formed by connecting the self-controlled vacuum valve 24 to the inlet and outlet of the B1 Roots pump 16 in sequence. Channel C 22 is formed by connecting the self-controlled vacuum valve 24 to the inlet and outlet of the C backing screw pump 18 in sequence. Channel D 23 is formed by connecting the self-controlled vacuum valve 24 to the inlet and outlet of the D backing screw pump 19 in sequence. The inlet of the self-controlled vacuum valve 24 in channel A 20 and the inlet of channel B 24 are connected in sequence. The inlet of the self-controlled vacuum valve 24 and the inlet of the self-controlled bypass valve 25 are directly connected. The outlet of the self-controlled vacuum valve 24, the outlet of the A2 Roots pump 15, and the outlet of the B2 Roots pump 17 are directly connected. The inlet of the self-controlled valve 22 in the C channel is directly connected to the inlet of the self-controlled vacuum valve 24 in the D channel 23. The outlets of the A channel 20 and the B channel 21 are directly connected to the inlets of the C channel 22 and the D channel 23. The C-stage screw pump 18 and the D-stage screw pump 19 can be oil-type screw vacuum pumps or dry screw vacuum pumps.
[0040] Example 3
[0041] Reference Figure 1 , Figure 2 and Figure 5 This utility model discloses an intelligent combined vacuum device for tobacco leaf vacuum rehumidification, comprising a rehumidification chamber 1, a first pipe 2 on the top of the rehumidification chamber 1, a self-controlled main vacuum valve 3 on the outer surface of the first pipe 2, a filter 4 on one side of the rehumidification chamber 1, a refrigeration component 5 on one side of the self-controlled main vacuum valve 3, a steam trap 6 on one side of the refrigeration component 5, a modular vacuum unit 7 on one side of the steam trap 6, a water tank 8 on one side of the steam trap 6, and a self-controlled drain valve 9 on one side of the water tank 8. The rehumidification chamber 1 is connected to the inlet of the filter 4 via the self-controlled vacuum valve 24, the outlet of the filter 4 is connected to the inlet of the steam trap 6, the outlet of the steam trap 6 is connected to the modular vacuum unit 7, the drain outlet of the filter 4 and the drain outlet of the steam trap 6 are connected to the inlet of the water tank 8, and the outlet of the water tank 8 is connected to a pneumatic valve.
[0042] Reference Figure 1 , Figure 2 and Figure 5 The refrigeration component 5 includes a refrigeration unit 10. An energy storage buffer tank 11 is provided on one side of the refrigeration unit 10. A low-temperature circulating pump 12 is provided on one side of the energy storage buffer tank 11, which can provide a cold source for the steam trap 6 and allow low-temperature water vapor to enter the steam trap 6. A condensation pipe 13 is provided on one side of the energy storage buffer tank 11. The energy storage buffer tank 11, the low-temperature circulating pump 12 and the steam trap 6 are connected through the condensation pipe 13, which allows low-temperature water vapor to enter the steam trap 6, thereby reducing the operating load and benefiting the normal operation of the vacuum pump.
[0043] Reference Figure 1 , Figure 2 and Figure 5 The modular vacuum unit 7 includes an A1 Roots pump 14, an A2 Roots pump 15 on one side of the A1 Roots pump 14, a C-stage screw pump 18 on one side of the A1 Roots pump 14, and a D-stage screw pump 19 on one side of the C-stage screw pump 18. The combination can be adjusted in a timely manner according to changes in the pumping load to avoid equipment downtime due to sudden failures, which would affect the operation of the entire production line. An A channel 20 is provided on one side of the A1 Roots pump 14, a C channel 22 is provided on one side of the C-stage screw pump 18, and a D channel 23 is provided on one side of the D-stage screw pump 19, which can generate a vacuum in the equipment. Self-controlled vacuum valves 24 are provided on the outer surface of both C channel 22 and D channel 23, and a bypass valve 25 is provided on the outer surface of A channel 20, which enables automatic coordination, on / off start and stop of the equipment.
[0044] Reference Figure 1 , Figure 2 and Figure 5 The inlet and outlet of the self-controlled vacuum valve 24 in channel A 20 are sequentially connected to the inlet and outlet of the A1 Roots pump 14 and the A2 Roots pump 15 to form channel A 20. The inlet and outlet of the self-controlled vacuum valve 24 in channel C 22 are sequentially connected to the inlet and outlet of the C backing screw pump 18 to form channel C 22. The inlet and outlet of the self-controlled vacuum valve 24 in channel D 23 are sequentially connected to the inlet and outlet of the D backing screw pump 19 to form channel D 23. The inlet of the self-controlled vacuum valve 24 in channel A 20 and the inlet of the self-controlled bypass valve 25 are directly connected. The outlet of the self-controlled vacuum valve 24 in channel A 20, the outlet of the A2 Roots pump 15, the inlet of the self-controlled valve in channel C 22, and the inlet of the self-controlled vacuum valve 24 in channel D 23 are directly connected. The inlets of channel A 20, channel C 22, and channel D 23 are directly connected. The C backing screw pump 18 and the D backing screw pump 19 can be oil-type screw vacuum pumps or dry screw vacuum pumps.
[0045] The implementation principle of this embodiment is as follows:
[0046] This intelligent combined vacuum device for tobacco leaf vacuum rehumidification normally involves three evacuation processes during a 2.5-cycle rehumidification process. During the first evacuation, the automatic bypass valve 25, the automatic vacuum valve 24 of channel C 22, the automatic vacuum valve 24 of channel D 23, the C-stage pre-screw pump 18, and the D-stage pre-screw pump 19 are opened. When the first set vacuum level (e.g., 8 kPa) is reached, the automatic bypass valve 25 is closed, and the automatic vacuum valve 24 of channel A 20 and the A2 Roots pump 15 are opened. When the second set vacuum level (e.g., 4 kPa) is reached, the A1 Roots pump 14 is opened, and then the automatic vacuum valve 24 of channel D 23 and the D-stage pre-screw pump 19 are closed until the working vacuum level is reached. Alternatively, the automatic vacuum valve of channel D 23 can be closed earlier based on operating performance parameters. 24. D-stage screw pump 19, for example, is closed simultaneously with the automatic bypass valve 25. The main working medium in the initial stage of the first evacuation is air. When the evacuation reaches 40,000 kPa (corresponding to a saturation temperature of 29°C), the water in the humidification chamber 1 begins to evaporate faster. The low-temperature water vapor enters the steam trap 6 and is condensed. The non-condensable gas enters the vacuum unit 7, effectively protecting the flow components from corrosion. The main working medium in the second and third evacuations is water vapor. The backing pump is turned on simultaneously, and the large pumping volume is operated. In this example, the automatic bypass valve 25, the automatic vacuum valve 24 of channel C 22, the automatic vacuum valve 24 of channel D 23, the C-stage screw pump 18, and the D-stage screw pump 19 are turned on. At this time, the Roots vacuum pump is no longer turned on, and the evacuation is carried out to the set vacuum level.
[0047] The refrigeration unit 10 provides a cold source for the steam trap 6. Since the vacuum dehumidifier operates intermittently, the steam trap 6 is also used intermittently. Therefore, an energy storage buffer tank 11 is set between the refrigeration unit 10 and the steam trap 6. This can reduce the cooling capacity and installed power of the refrigeration unit 10. When the equipment is not evacuated, the refrigeration unit 10 and the energy storage buffer tank 11 are still working in a cycle. The temperature inside the energy storage buffer tank 11 can reach -70℃ to -5℃ according to the design requirements. The low temperature circulating pump 12 makes the steam trap 6 reach the required trapping temperature. The steam trap 6 is also called a cold trap and can be a shell-and-tube structure or other structures.
[0048] Compared with the prior art, the present invention has the following advantages:
[0049] 1. In this intelligent combined vacuum device, the tobacco vacuum rehumidifier extracts gas from the vacuum chamber, which is then filtered, condensed, and dehydrated before entering the vacuum pump. This reduces the load on the vacuum pump and is beneficial to its normal operation.
[0050] 2. The tobacco leaf vacuum rehumidifier of this intelligent combined vacuum device uses multiple front-stage screw vacuum pumps in parallel. The load is large at startup, and multiple screw vacuum pumps are turned on. However, as the load decreases in the later stages of evacuation, some of the screw vacuum pumps can be turned off to reduce energy consumption. The combination of multiple Roots vacuum pumps and screw vacuum pumps allows for timely adjustment of the combination according to changes in the evacuation load. Furthermore, if any of the Roots vacuum pumps and screw vacuum pumps malfunctions, the combination can be adjusted promptly to ensure equipment operation and avoid equipment downtime due to sudden failures, which could affect the operation of the entire production line.
[0051] 3. For the tobacco vacuum rehumidifier of this intelligent combined vacuum device, a large-volume vacuum chamber requires a vacuum pump with a large air extraction capacity. However, if multiple small-capacity vacuum pumps are used in parallel, the procurement cost is actually lower and the economy is better.
[0052] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A smart combined vacuum device for tobacco leaf vacuum rehumidification, characterized in that: The device includes a rehumidification chamber (1), a first pipe (2) is provided on the top of the rehumidification chamber (1), a self-controlled main vacuum valve (3) is provided on the outer surface of the first pipe (2), a filter (4) is provided on one side of the self-controlled main vacuum valve (3), a refrigeration component (5) is provided on one side of the refrigeration component (5), a steam trap (6) is provided on one side of the refrigeration component (5), a modular vacuum unit (7) is provided on one side of the steam trap (6), a water collection tank (8) is provided on one side of the water collection tank (8), and a self-controlled drain valve (9) is provided on one side of the water collection tank (8).
2. The tobacco vacuum rehumidifier of the intelligent combined vacuum device according to claim 1, characterized in that: The refrigeration component (5) includes a refrigeration unit (10), an energy storage buffer tank (11) is provided on one side of the refrigeration unit (10), and a low-temperature circulating pump (12) is provided on one side of the energy storage buffer tank (11).
3. The tobacco vacuum rehumidifier of the intelligent combined vacuum device according to claim 2, characterized in that: A condensing pipe (13) is provided on one side of the energy storage buffer tank (11), and the energy storage buffer tank (11), the cryogenic circulating pump (12) and the steam trap (6) are connected through the condensing pipe (13).
4. The tobacco vacuum rehumidifier of the intelligent combined vacuum device according to claim 1, characterized in that: The modular vacuum unit (7) includes an A1 Roots pump (14), an A2 Roots pump (15) is provided on one side of the A1 Roots pump (14), a B1 Roots pump (16) is provided on one side of the A1 Roots pump (14), a B2 Roots pump (17) is provided on one side of the B1 Roots pump (16), a C backing screw pump (18) is provided on one side of the B2 Roots pump (17), and a D backing screw pump (19) is provided on one side of the C backing screw pump (18).
5. A tobacco vacuum rehumidifier based on a smart combined vacuum device according to claim 4, characterized in that: The A1 Roots pump (14) has an A channel (20) on one side, the B1 Roots pump (16) has a B channel (21) on one side, the C fore-stage screw pump (18) has a C channel (22) on one side, and the D fore-stage screw pump (19) has a D channel (23) on one side.
6. The tobacco vacuum rehumidifier of the intelligent combined vacuum device according to claim 5, characterized in that: The outer surfaces of channels A (20), B (21), C (22) and D (23) are all provided with self-controlled vacuum valves (24), and the outer surface of channel B (21) is provided with a bypass valve (25).