A tobacco leaf vacuum conditioning system

Abstract

The utility model relates to the field of tobacco leaf processing technology provides a tobacco leaf vacuum moisture system, include: valve control subassembly, roots pump group, condensing component, water ring pump group and cooling assembly, roots pump group is configured to communicate with moisture tank body through valve control subassembly, condensing component includes first passageway and second passageway, and first passageway and second passageway can realize heat exchange, and roots pump group and first passageway communicate, and first passageway is configured to communicate with moisture tank body through valve control subassembly, the inlet end of water ring pump group and first passageway communicate, cooling assembly and second passageway communicate, for the cooling medium into second passageway, valve control subassembly is used to control roots pump group and condensing component selectively with moisture tank body communicate, the tobacco leaf vacuum moisture system shown in the utility model, the low operating cost, system operation is stable, has realized to the efficient, energy -conserving and environmental protection mode to the tobacco leaf vacuum moisture treatment.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a tobacco vacuum rehumidification system. Background Technology

[0002] Currently, tobacco leaves, after being stacked and stored for a long time, tend to lose moisture and become compacted. Cigarette factories and re-drying plants typically use vacuum rehumidification to treat tobacco leaves at high temperatures and humidity during production. This increases the leaf's moisture and temperature, thereby improving its fluffiness and processing resistance. Soft and loose tobacco leaves can improve the efficiency of unpacking and sorting. At the same time, the high temperature can kill tobacco pests, insect eggs, and bacteria, as well as remove some of the green and impurities from the leaves. This also facilitates the color change of green and yellow tobacco leaves and helps improve the flavor of the tobacco.

[0003] Existing vacuum rehumidification systems are mainly based on the vacuuming of the rehumidification chamber by a steam jet pump. The steam jet pump delivers saturated or superheated steam at a certain pressure to the mixing chamber through a Laval nozzle, which reduces the pressure and increases the speed. This creates a low-pressure zone in the mixing chamber, allowing working steam to be drawn in. The steam injected by the Laval nozzle is mixed with the working steam in the mixing chamber, and the mixed gas after heat exchange is discharged through the diffuser in a low-speed, high-pressure manner. This creates a near-vacuum in the rehumidification chamber, meeting the technical requirements of cigarette factories and re-drying plants for the treatment effect of tobacco leaves.

[0004] However, in practical applications, it has been found that the above-mentioned vacuum rehumidification system requires a large amount of steam to operate, resulting in high energy consumption, which is not conducive to reducing the cost of tobacco processing. Utility Model Content

[0005] This invention provides a tobacco leaf vacuum rehumidification system to at least solve or improve the problem that existing vacuum rehumidification systems have high energy consumption, which is not conducive to reducing tobacco leaf processing costs.

[0006] This utility model provides a tobacco leaf vacuum rehumidification system, comprising:

[0007] Valve control components;

[0008] The Roots pump unit is configured to communicate with the rehumidification chamber via the valve control assembly;

[0009] The condensation assembly includes a first channel and a second channel, which are capable of heat exchange. The Roots pump unit is connected to the first channel, and the first channel is configured to be connected to the rehumidification chamber via the valve control assembly.

[0010] A water ring pump unit, wherein the inlet end of the water ring pump unit is connected to the first channel;

[0011] A cooling assembly, which is connected to the second channel, is used to introduce a cooling medium into the second channel;

[0012] The valve control assembly is used to control the selective connection between the Roots pump unit and the condensation assembly and the rehumidification chamber.

[0013] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the valve control assembly includes a first control valve and a second control valve;

[0014] The Roots pump assembly includes a first Roots pump and a second Roots pump. The inlet end of the first Roots pump is connected to the rehumidification chamber through the first control valve. The outlet end of the first Roots pump is connected to the inlet end of the second Roots pump. The inlet end of the second Roots pump is also connected to the rehumidification chamber through the second control valve. The outlet end of the second Roots pump is connected to the first channel of the condensation assembly.

[0015] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the valve control assembly includes a third control valve and a fourth control valve;

[0016] The condensation assembly includes a first condenser and a second condenser, wherein the first condenser and the second condenser are respectively provided with the first channel and the second channel;

[0017] The first end of the first channel corresponding to the first condenser is connected to the rehumidification chamber through the third control valve. The second end of the first channel corresponding to the first condenser is connected to the Roots pump set and the first end of the first channel corresponding to the second condenser, respectively, and is connected to the rehumidification chamber through the fourth control valve. The second end of the first channel corresponding to the second condenser is connected to the water ring pump set.

[0018] According to the present invention, a tobacco leaf vacuum rehumidification system includes a cooling component comprising:

[0019] A chiller is used to supply chilled water.

[0020] A water tank, comprising a cold water zone and a hot water zone, wherein the cold water zone and the hot water zone are separated from each other;

[0021] The piping subsystem includes a first pipe, a second pipe, and a third pipe. The first pipe connects the outlet of the chiller to the cold water zone, the second pipe connects the cold water zone to the first end of the second channel, and the third pipe connects the second end of the second channel to the hot water zone.

[0022] A water pump is installed on the second pipeline.

[0023] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the pipeline subsystem further includes: a fourth pipeline, the first end of the fourth pipeline being connected to the second pipeline and disposed between the water pump and the condenser assembly, and the second end of the fourth pipeline being connected to the water inlet of the chiller.

[0024] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the pipeline subsystem further includes: a fifth pipeline, wherein a first end of the fifth pipeline is connected to the first channel, and a second end of the fifth pipeline is connected to the hot water zone;

[0025] A water valve is installed on the fifth pipeline, which is used to control the condensate generated in the first channel to flow into the hot water area along the fifth pipeline.

[0026] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the pipeline subsystem further includes a filter, the filter being disposed in the cold water zone and connected to one end of the second pipeline extending into the cold water zone.

[0027] According to the present invention, a tobacco leaf vacuum rehumidification system further includes:

[0028] A steam-water separator is provided on the upper side of the hot water zone, and the steam-water separator is connected to the outlet end of the water ring pump set.

[0029] According to the present invention, a tobacco leaf vacuum rehumidification system is provided, wherein the water ring pump group includes a first water ring pump and a second water ring pump.

[0030] The first water ring pump and the second water ring pump are arranged side by side, and the inlet ends of the first water ring pump and the second water ring pump are respectively connected to the first channel.

[0031] The tobacco vacuum rehumidification system provided by this utility model includes a valve control assembly, a Roots pump set, a condenser assembly, a water ring pump set, and a cooling assembly. Since the valve control assembly is used to selectively connect the Roots pump set and the condenser assembly to the rehumidification chamber, in practical applications, the rehumidification chamber can be connected to the condenser assembly first. When the condenser assembly is not in operation, the water ring pump set is used to evacuate the rehumidification chamber. Then, the rehumidification chamber is connected to the Roots pump set, and the condenser assembly is activated, allowing the condenser assembly to evacuate the gas discharged from the Roots pump set. The system cools the tobacco leaves and uses a Roots pump set to assist a water ring pump set in evacuating the rehumidification chamber. When the vacuum level in the rehumidification chamber reaches the required level, the chamber can be connected to the condenser assembly, keeping the condenser assembly operational. The rehumidification chamber is then evacuated solely by the water ring pump set. Compared to using a steam jet pump for vacuuming, this design reduces steam consumption, lowers system operating costs, ensures system stability, and achieves efficient, energy-saving, and environmentally friendly vacuum rehumidification of tobacco leaves. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the 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.

[0033] Figure 1 This is one of the structural schematic diagrams of the tobacco vacuum rehumidification system provided by this utility model.

[0034] Figure 2 This is the second schematic diagram of the structure of the tobacco vacuum rehumidification system provided by this utility model.

[0035] Figure 3 This utility model provides Figure 2 A schematic diagram of the main structure.

[0036] Figure label:

[0037] 10. Rehumidification chamber; 1. Roots pump set; 2. Condensation assembly; 3. Water ring pump set; 4. Cooling assembly; 41. Chiller; 42. Water tank; 5. Filter; 6. Steam-water separator. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages 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 scope of protection of this utility model.

[0039] The following is combined with Figures 1-3 The present invention will provide a detailed description of the tobacco vacuum rehumidification system provided by the present invention through specific embodiments and application scenarios.

[0040] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a tobacco leaf vacuum rehumidification system, including: a valve control assembly, a Roots pump set 1, a condensation assembly 2, a water ring pump set 3, and a cooling assembly 4;

[0041] Roots pump unit 1 is configured to communicate with rehumidification chamber 10 via a valve control assembly, the rehumidification chamber 10 being used to hold tobacco leaves to be rehumidified; condensation assembly 2 includes a first channel and a second channel, the first channel and the second channel being capable of heat exchange, Roots pump unit 1 being connected to the first channel, the first channel being configured to communicate with rehumidification chamber 10 via a valve control assembly; the inlet end of water ring pump unit 3 is connected to the first channel; cooling assembly 4 is connected to the second channel, for introducing cooling medium into the second channel;

[0042] The valve control assembly is used to control the selective connection between the Roots pump unit 1 and the condenser assembly 2 and the rehumidification chamber 10.

[0043] Understandably, the Roots pump assembly 1 may include at least one Roots pump, which is a rotary positive displacement vacuum pump configured to draw in gas and compress the gas before discharging it.

[0044] Similarly, a ring pump assembly may include at least one water ring pump, each of which is capable of performing the processes of intake, compression, and exhaust.

[0045] Meanwhile, the condensing assembly 2 may include at least one plate heat exchanger or shell-and-tube heat exchanger, both of which are equipped with a first channel and a second channel capable of achieving indirect heat exchange; wherein, the cooling assembly 4 may introduce a cooling medium including cold water or ice-salt water into the second channel of the condensing assembly 2.

[0046] When the Roots pump unit 1 compresses and discharges the gas it draws in, the temperature of the discharged gas will rise. This allows the gas to exchange heat with the gas in the first channel through the cooling medium in the second channel corresponding to the condenser assembly 2, thereby achieving the cooling of the gas.

[0047] The tobacco vacuum rehumidification system of this utility model, because the valve control component is used to control the selective connection between the Roots pump set 1 and the condenser assembly 2 and the rehumidification chamber 10, in practical applications, can first control the connection between the rehumidification chamber 10 and the condenser assembly 2. When the condenser assembly 2 is not in operation, the water ring pump set 3 is used to evacuate the rehumidification chamber 10. Then, the rehumidification chamber 10 is connected to the Roots pump set 1, and the condenser assembly 2 is started. The condenser assembly 2 cools the gas discharged from the Roots pump set 1, realizing the cooling effect of the Roots pump... Group 1 assists water ring pump group 3 to evacuate the rehumidification chamber 10. When the vacuum level in the rehumidification chamber 10 reaches the required level, the rehumidification chamber 10 can be connected to the condenser component 2, and the condenser component 2 can be kept in working state. The rehumidification chamber 10 is evacuated by water ring pump group 3 alone. Compared with the vacuuming of the rehumidification chamber 10 by steam jet pump, this design reduces steam consumption, lowers system operating costs, ensures the stability of system operation, and realizes vacuum rehumidification of tobacco leaves in an efficient, energy-saving and environmentally friendly manner.

[0048] In some examples, the tobacco vacuum rehumidification system of this embodiment can be configured with a control subsystem. The control subsystem includes a host computer and a controller. The host computer is used to receive user operation commands. The host computer and the controller are communicatively connected. The controller is electrically connected to the valve control component, the Roots pump group 1, the water ring pump group 3, and the cooling component 4, respectively. The working status of the valve control component, the Roots pump group 1, the water ring pump group 3, and the cooling component 4 can be controlled according to the above process to achieve the purpose of automatic control.

[0049] The rehumidification chamber 10 can be equipped with a pressure sensor, which is electrically connected to the controller. The pressure sensor is used to detect the pressure information inside the rehumidification chamber 10. The controller can automatically control the working status of the valve control assembly, the Roots pump group 1, the water ring pump group 3 and the cooling assembly 4 based on the pressure information fed back by the pressure sensor.

[0050] In some embodiments, such as Figure 1 As shown, the valve control assembly includes a first control valve K1 and a second control valve K2; the Roots pump group 1 includes a first Roots pump p1 and a second Roots pump p2. The inlet end of the first Roots pump p1 is connected to the rehumidification chamber 10 through the first control valve K1, the outlet end of the first Roots pump p1 is connected to the inlet end of the second Roots pump p2, the inlet end of the second Roots pump p2 is also connected to the rehumidification chamber 10 through the second control valve K2, and the outlet end of the second Roots pump p2 is connected to the first channel of the condensation assembly 2.

[0051] It is understandable that both the first control valve K1 and the second control valve K2 can be two-position two-way valves. Both the first control valve K1 and the second control valve K2 can be configured to be electrically connected to the controller, and the controller can control the on / off state of the first control valve K1 and the second control valve K2 respectively.

[0052] At the same time, when the first control valve K1 is opened, at least one of the first Roots pump p1 and the second Roots pump p2 can be controlled to start vacuuming; when the second control valve K2 is opened, the second Roots pump p2 can be controlled to start vacuuming.

[0053] In some embodiments, such as Figure 1 As shown, the valve control assembly includes a third control valve K3 and a fourth control valve K4; the condensation assembly 2 includes a first condenser I and a second condenser II, the first condenser I and the second condenser II are respectively provided with a first channel and a second channel; the first end of the first channel corresponding to the first condenser I is connected to the rehumidification chamber 10 through the third control valve K3, the second end of the first channel corresponding to the first condenser I is connected to the first end of the first channel corresponding to the Roots pump group 1 and the second condenser II, and is connected to the rehumidification chamber 10 through the fourth control valve K4, and the second end of the first channel corresponding to the second condenser II is connected to the water ring pump group 3.

[0054] It is understandable that both the third control valve K3 and the fourth control valve K4 can be two-position two-way valves. Both the third control valve K3 and the fourth control valve K4 can be configured to be electrically connected to the controller, and the controller can control the on / off state of the third control valve K3 and the fourth control valve K4 respectively.

[0055] Meanwhile, both the first condenser I and the second condenser II can be shell-and-tube heat exchangers, which are arranged vertically.

[0056] In practical applications, by controlling the third control valve K3 to close and the fourth control valve K4 to open, the gas in the rehumidification chamber 10 can directly reach the water ring pump group 3 through the first channel corresponding to the second condenser II, or the gas in the rehumidification chamber 10 can sequentially pass through the Roots pump group 1 and the first channel corresponding to the second condenser II to reach the water ring pump group 3, and then be discharged by the water ring pump group 3; by controlling the third control valve K3 to open and the fourth control valve K4 to close, the gas in the rehumidification chamber 10 can sequentially pass through the first channel corresponding to the first condenser I and the second condenser II to reach the water ring pump group 3, and then be discharged by the water ring pump group 3.

[0057] In some embodiments, such as Figure 1 As shown, in order to supply chilled water to the second channel of the condensation assembly 2, the cooling assembly 4 includes: a chiller 41, a water tank 42, and a piping subsystem;

[0058] The chiller 41 is used to supply cold water; the water tank 42 includes a cold water zone and a hot water zone, which are separated from each other; the piping subsystem includes a first pipe S1, a second pipe S2 and a third pipe S3. The first pipe S1 is used to connect the outlet of the chiller 41 to the cold water zone of the water tank 42, the second pipe S2 is used to connect the cold water zone to the first end of the second channel, and the third pipe S3 is used to connect the second end of the second channel to the hot water zone; wherein, a water pump is installed on the second pipe S2.

[0059] Understandably, the chiller 41 supplies chilled water to the chilled water zone of the water tank 42 via the first pipe S1. Under the pumping of the water pump, the chilled water in the chilled water zone is sequentially transported via the second pipe S2 to the second channels corresponding to the first condenser I and the second condenser II. The chilled water in the second channel corresponding to the first condenser I can exchange heat with the air in the first channel corresponding to the first condenser I, and the chilled water in the second channel corresponding to the second condenser II can exchange heat with the air in the first channel corresponding to the second condenser II. After the heat exchange, the air output from the first channel corresponding to the first condenser I and the second condenser II is cooled, and hot water is output from the second channel corresponding to the first condenser I and the second condenser II. This hot water is discharged to the hot water zone of the water tank 42 via the third pipe S3.

[0060] The water tank 42 can be equipped with heat insulation components such as polystyrene foam and vacuum insulation panels to reduce heat exchange between the cold water zone and the hot water zone.

[0061] In addition, in practical applications, the cold water in the cold water zone of the water tank 42 can also be pumped into the shell wall of the water ring pump group 3 to cool the water ring pump group 3 and prevent the water ring pump group 3 from overheating during operation.

[0062] In some embodiments, such as Figure 1 As shown, the piping subsystem also includes: a fourth pipe S4, the first end of the fourth pipe S4 is connected to the second pipe S2 and is located between the water pump and the condenser assembly 2, and the second end of the fourth pipe S4 is connected to the water inlet of the chiller 41.

[0063] It is understandable that the chilled water zone of the chiller 41 and the water tank 42 forms a closed-loop water circuit through the first pipe S1, the fourth pipe S4 and a part of the second pipe S2. The water pump is set on the closed-loop water circuit. Based on the pumping power provided by the water pump, it can ensure that the water flows back and forth along the closed-loop water circuit, thereby realizing the continuous cooling of the chilled water in the chilled water zone by using the chiller 41.

[0064] For example, the chiller 41 generally includes a compressor, a condenser, an expansion valve, and an evaporator. The compressor, condenser, expansion valve, and evaporator are connected to form a closed-loop system. Its working principle is as follows: (1) Compression process: The compressor compresses the low-temperature, low-pressure refrigerant gas from the evaporator into a high-temperature, high-pressure gas; (2) Condensation process: The high-temperature, high-pressure gas enters the condenser and releases heat to the cooling medium (such as air or water), and is cooled into a room-temperature, high-pressure liquid; (3) Expansion process: The room-temperature, high-pressure liquid is throttled through the expansion valve and becomes a low-temperature, low-pressure wet vapor; (4) Evaporation process: The low-temperature, low-pressure wet vapor enters the evaporator, absorbs the heat of the chilled water in the evaporator, and causes the water temperature to drop. At the same time, the refrigerant evaporates into gas; (5) Circulation process: The evaporated refrigerant gas is sucked back into the compressor and the above circulation process is repeated to achieve continuous cooling.

[0065] In some embodiments, such as Figure 1 As shown, the piping subsystem also includes: a fifth pipe S5, the first end of which is connected to the first channel, and the second end of which is connected to the hot water area;

[0066] Among them, a water valve K5 is installed on the fifth pipe S5. The water valve K5 is used to control the condensate generated in the first channel to flow into the hot water area along the fifth pipe S5.

[0067] In some embodiments, such as Figure 1 As shown, the piping subsystem also includes a filter 5, which is installed in the cold water zone of the water tank 42 and connected to one end of the second pipe S2 that extends into the cold water zone. The filter 5 is used to filter the cold water flowing into the second pipe S2 to prevent solid impurities from entering the second pipe S2.

[0068] In some embodiments, such as Figure 1 As shown, it also includes: a steam-water separator 6, which is located on the upper side of the hot water zone of the water tank 42, and is connected to the outlet end of the water ring pump group 3. The steam-water separator 6 is used to separate the steam and water from the gas discharged from the water ring pump group 3. The high-temperature liquid obtained after steam-water separation is discharged into the hot water zone of the water tank 42, while the gas is directly discharged into the atmosphere.

[0069] In some embodiments, such as Figure 1 As shown, the water ring pump set 3 includes a first water ring pump M1 and a second water ring pump M2; the first water ring pump M1 and the second water ring pump M2 are arranged side by side, the inlet ends of the first water ring pump M1 and the second water ring pump M2 are respectively connected to the first channel, and the outlet ends of the first water ring pump M1 and the second water ring pump M2 are respectively connected to the steam-water separator 6, and the steam-water separator 6 simultaneously performs steam-water separation treatment on the gas discharged by the first water ring pump M1 and the second water ring pump M2.

[0070] like Figure 1 As shown in the above embodiment, the specific working process of the tobacco vacuum rehumidification system is as follows:

[0071] Step 1: Control the first control valve K1, the second control valve K2, and the third control valve K3 to close, control the fourth control valve K4 to open, and control the water ring pump group 3 to start working. The Roots pump group 1 and the condenser assembly 2 are not started working. The gas in the humidification chamber 10 reaches the water ring pump group 3 through the first channel corresponding to the second condenser II, and is discharged under the pumping of the water ring pump group 3, realizing the gas extraction work by the water ring pump group 3.

[0072] Step 2: Close the first control valve K1, the third control valve K3, and the fourth control valve K4, open the second control valve K2, and start the second Roots pump p2. The first condenser I and the second condenser II corresponding to the condensation assembly 2 will both start working. The gas in the rehumidification chamber 10 will sequentially reach the water ring pump group 3 through the first channel corresponding to the second Roots pump p2 and the second condenser II. Under the pumping of the water ring pump group 3, the gas will be discharged, realizing the vacuuming of the rehumidification chamber 10 by the second Roots pump p2 assisting the water ring pump group 3.

[0073] Step 3: Close the second control valve K2, the third control valve K3, and the fourth control valve K4, open the first control valve K1, and start the first Roots pump p1 and the second Roots pump p2. Start the first condenser I and the second condenser II corresponding to the condensation assembly 2. The gas in the rehumidification chamber 10 passes through the first channel corresponding to the first Roots pump p1, the second Roots pump p2, and the second condenser II to the water ring pump group 3. Under the pumping of the water ring pump group 3, the gas is discharged, realizing the vacuuming of the rehumidification chamber 10 by the first Roots pump p1 and the second Roots pump p2 together assisting the water ring pump group 3.

[0074] Step 4: Close the first control valve K1, the second control valve K2, and the fourth control valve K4; open the third control valve K3; and stop the first Roots pump p1 and the second Roots pump p2. Start the first condenser I and the second condenser II corresponding to the condensation assembly 2. The gas in the rehumidification chamber 10 passes through the first channel corresponding to the first condenser I and the second condenser II to the water ring pump group 3. Under the pumping of the water ring pump group 3, the gas is discharged, realizing the vacuuming of the rehumidification chamber 10 by relying solely on the water ring pump group 3.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tobacco leaf vacuum conditioning system, characterized by, include: Valve control components; The Roots pump unit is configured to communicate with the rehumidification chamber via the valve control assembly; The condensation assembly includes a first channel and a second channel, which are capable of heat exchange. The Roots pump unit is connected to the first channel, and the first channel is configured to be connected to the rehumidification chamber via the valve control assembly. A water ring pump unit, wherein the inlet end of the water ring pump unit is connected to the first channel; A cooling assembly, which is connected to the second channel, is used to introduce a cooling medium into the second channel; The valve control assembly is used to control the selective connection between the Roots pump unit and the condensation assembly and the rehumidification chamber.

2. The tobacco leaf vacuum conditioning system of claim 1, wherein, The valve control assembly includes a first control valve and a second control valve; The Roots pump assembly includes a first Roots pump and a second Roots pump. The inlet end of the first Roots pump is connected to the rehumidification chamber through the first control valve. The outlet end of the first Roots pump is connected to the inlet end of the second Roots pump. The inlet end of the second Roots pump is also connected to the rehumidification chamber through the second control valve. The outlet end of the second Roots pump is connected to the first channel of the condensation assembly.

3. The tobacco leaf vacuum conditioning system of claim 1, wherein, The valve control assembly includes a third control valve and a fourth control valve; The condensation assembly includes a first condenser and a second condenser, wherein the first condenser and the second condenser are respectively provided with the first channel and the second channel; The first end of the first channel corresponding to the first condenser is connected to the rehumidification chamber through the third control valve. The second end of the first channel corresponding to the first condenser is connected to the Roots pump set and the first end of the first channel corresponding to the second condenser, respectively, and is connected to the rehumidification chamber through the fourth control valve. The second end of the first channel corresponding to the second condenser is connected to the water ring pump set.

4. The tobacco leaf vacuum conditioning system of claim 1, wherein, The cooling assembly includes: A chiller is used to supply chilled water. A water tank, comprising a cold water zone and a hot water zone, wherein the cold water zone and the hot water zone are separated from each other; The piping subsystem includes a first pipe, a second pipe, and a third pipe. The first pipe connects the outlet of the chiller to the cold water zone, the second pipe connects the cold water zone to the first end of the second channel, and the third pipe connects the second end of the second channel to the hot water zone. A water pump is installed on the second pipeline.

5. The tobacco leaf vacuum conditioning system of claim 4, wherein, The piping subsystem also includes: A fourth pipeline, the first end of which is connected to the second pipeline and is disposed between the water pump and the condenser assembly, and the second end of which is connected to the water inlet of the chiller.

6. The tobacco leaf vacuum conditioning system of claim 4, wherein, The piping subsystem also includes: The fifth pipeline has its first end connected to the first channel and its second end connected to the hot water area; A water valve is installed on the fifth pipeline, which is used to control the condensate generated in the first channel to flow into the hot water area along the fifth pipeline.

7. The tobacco leaf vacuum conditioning system of claim 4, wherein, The piping subsystem also includes: A filter is disposed in the cold water zone and is connected to one end of the second pipe that extends into the cold water zone.

8. The tobacco leaf vacuum conditioning system of claim 4, wherein, Also includes: A steam-water separator is provided on the upper side of the hot water zone, and the steam-water separator is connected to the outlet end of the water ring pump set.

9. The tobacco leaf vacuum conditioning system of any one of claims 1 to 8, wherein, The water ring pump set includes a first water ring pump and a second water ring pump; The first water ring pump and the second water ring pump are arranged side by side, and the inlet ends of the first water ring pump and the second water ring pump are respectively connected to the first channel.

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