A system for collecting steam overflow from tobacco production drums

Abstract

The present invention relates to a system for collecting steam overflowing from a tobacco production drum, comprising a discharge bin and a steam introduction sleeve. The discharge bin is open at the bottom, and a first opening is provided on one side for the discharge end of the production drum to penetrate. The steam introduction sleeve is sleeved outside the lower opening of the discharge bin, and a constricted upper end is provided and detachably connected to the lower outer wall of the discharge bin. The lower end of the steam introduction sleeve extends to the bottom of the discharge bin and bends inward to form an annular drip trough. A drainage port is provided at the bottom of the drip trough. A steam introduction pipe is fixed around the inner side of the steam introduction sleeve. Steam inlet holes are evenly distributed along the length of the steam introduction pipe. The steam introduction pipe is connected to a moisture drain cylinder through a pipeline, and an air amplifier is connected to the pipeline. Advantages: It can effectively improve the steam overflow condition at the drum discharge port, eliminate the risk of on-site equipment being corroded and damaged by high-temperature steam and high humidity, and at the same time, solve the hidden dangers of condensed water on the surface of on-site equipment, resulting in water-wet cigarettes and yellow-spotted cigarettes.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco production and processing, and in particular to a system for collecting steam overflowing from a tobacco production drum. Background Art

[0002] Tobacco roller equipment is the most important equipment for tobacco leaf production in the tobacco industry. It mainly heats and humidifies tobacco, loosens tobacco leaves, and removes impurities. The roller equipment is mainly composed of a roller, a feeding chamber, a discharging silo, a steam pipeline system, a moisture exhaust pipeline system, a feeding / water adding pipeline system, a fresh air pipeline system, and a condensate discharge pipeline system. During the processing of tobacco shreds, the drum equipment needs to be preheated in advance to meet the environment of the tobacco production process before production and processing can be carried out. The production process environment is mainly met by three major systems: the steam pipeline system, the dehumidification pipeline system and the fresh air pipeline system. The steam pipeline system mainly heats and humidifies the tobacco shreds, atomizes the liquid / water and provides heat source for hot air; the dehumidification pipeline system is divided into internal dehumidification and external dehumidification. The internal dehumidification is to recycle the hot air in the drum through the return air pipeline. The external dehumidification is mainly for the discharge hood, the excess steam for heating and humidification, and the excess hot air inside the drum through the dehumidification pipeline, providing negative pressure for external discharge; the fresh air system is mainly to provide fresh air to the inside of the drum. The fan passes through the radiator and the hot and cold ratio damper to provide fresh air that meets the process temperature to the inside of the drum.

[0003] However, during the production process, the drum discharge bin door and the upper rotating screen are not sealed tightly, resulting in the overflow of excess steam from the drum. Due to the constraints of production process parameters, the opening of the moisture exhaust damper is limited and the moisture exhaust capacity is fixed, which affects the on-site environment and generates condensation water on the surface of the equipment. In particular, the equipment is corroded by the overflowing high-temperature and high-humidity steam and condensation water, and there are risks of water-soaked tobacco and yellow-spotted tobacco.

[0004] Taking the above problems into consideration, a system for collecting overflow steam and condensed water from tobacco production drums is designed to collect the overflow steam generated during the tobacco production process and the condensed water generated on the discharge hopper wall, and the system meets the production process requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a system for collecting steam overflowing from tobacco production drums, thereby avoiding the hidden dangers of water-soaked tobacco and yellow-spotted tobacco, and effectively overcoming the defects of the prior art.

[0006] The technical solution of the present invention to solve the technical problem is as follows:

[0007] A system for collecting steam overflowing from a tobacco production drum comprises a discharge bin and a steam introduction sleeve. The discharge bin is open at the bottom and has a first opening on one side for the discharge end of the production drum to penetrate. The steam introduction sleeve is sleeved outside the lower opening of the discharge bin and has a constricted upper end and is detachably connected to the lower outer wall of the discharge bin.

[0008] The lower end of the steam introduction sleeve extends to the bottom of the discharge bin and bends inward to form an annular drip groove.

[0009] A drain port is provided at the bottom of the drip trough, a steam inlet pipe is fixed around the inner side of the steam inlet sleeve, steam inlet holes are evenly distributed on the steam inlet pipe along its length, the steam inlet pipe is connected to the dehumidification cylinder through a pipeline, and an air amplifier is connected to the pipeline; an adjusting damper is installed at the front end of the dehumidification cylinder, and a hot air pipeline system for blowing away condensed water droplets on the inner wall is installed above the drum discharge bin.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the upper part of the steam inlet sleeve is inclined and extended inwardly and upwardly to form a necking section, which is detachably connected to the lower outer wall of the discharge bin. The steam inlet pipe is fixed around the inner side of the necking section, and the steam inlet hole is provided on the outer side of the steam inlet pipe.

[0012] Furthermore, a fitting portion is provided on the upper portion of the steam inlet sleeve extending vertically upward, and a plurality of hooks are connected to the outer side of the fitting portion at intervals, and a plurality of hanging rings corresponding to the hooks are connected to the outer side of the lower opening of the discharge bin at intervals, and the hooks are hung with the corresponding hanging rings, and the fitting portion is fitted with the lower outer wall of the discharge bin.

[0013] Furthermore, the discharge bin is a square shell structure, and the first opening is provided on one side thereof.

[0014] Furthermore, the lower ends of the four side walls of the discharge bin are provided with mutually separate and bendable extension parts, and the extension parts can be bent downward and tilted outward until the lower ends fall above the drip trough.

[0015] Furthermore, the top and both side walls of the discharge bin are provided with waste gas discharge ports, and the waste gas discharge ports are connected to the moisture discharge cylinders through pipelines.

[0016] Furthermore, a plurality of pipe clamps are fixed at intervals around the inner side of the steam introduction sleeve. The steam introduction sleeve is an annular tube. The pipe clamp is detachably connected to the steam introduction sleeve. A steam exhaust port is provided at one end of the steam introduction sleeve. The steam exhaust port is connected and communicated with an adaptive joint on the side wall of the steam introduction sleeve. The joint is connected to the dehumidification sleeve through a pipeline.

[0017] The drum is provided with an inlet and a discharge bin; a hot air radiator is provided under the drum; a hot air circulation fan and a hot air gentle blowing pipeline are provided in the drum; a hot air gentle blowing valve is provided on the hot air gentle blowing pipeline; a hot air gentle blowing hole pipe is provided in the discharge bin; the hot air gentle blowing hole pipe and the hot air gentle blowing pipeline are connected through the hot air gentle blowing valve; an overflow steam collecting port is provided at the top of the discharge bin; an overflow steam negative pressure pipeline is provided on the collecting port; an overflow steam opening valve is provided on the overflow steam negative pressure pipeline; and the discharge bin is provided with a discharge bin door.

[0018] The opening degree of the overflow steam valve is determined according to the drum state;

[0019] According to the production sequence of tobacco, the drum status is divided into: preheating stage, standby stage, head stage, production stage and tail stage;

[0020] During the preheating stage, the overflow steam opening valve is closed, and the inner wall of the drum discharge bin is cleaned through the internal hot air cleaning pipeline. The condensed water droplets flow downward through the inner wall into the drip tank for discharge.

[0021] During the standby phase, the overflow steam valve is closed and the hot air cleaning pipeline is closed;

[0022] Material head stage: The overflow steam opening valve and the return air temperature are PID controlled, and the hot air cleaning pipeline is in the closed state;

[0023] Production stage: The overflow steam opening valve is jointly controlled with the return air temperature. The damper opening of the overflow steam opening valve is determined according to the humidity and temperature in the drum.

[0024] Tail stage: The damper of the overflow steam opening valve reaches the maximum opening.

[0025] In order to better control the humidity in the drum, the size of the damper is automatically controlled and adjusted according to the drum status;

[0026] The drum status is divided into: preheating stage, standby stage, material head stage, production stage, and material tail stage. The anti-overflow control damper is automatically controlled to effectively control its opening according to the characteristics of different states.

[0027] Preheating stage: The drum is preheated before production to meet the production process environment. At this stage, the fresh air duct system is provided with fresh air by the fan, and the fresh air is heat exchanged through the radiator. After passing through the hot and cold ratio damper with the set preheating temperature setting value PID control, it enters the drum. The external damper damper and the internal damper damper of the dehumidification duct system are controlled, and the fresh air enters the drum through the return air duct and the internal dehumidification gate. This stage is the preheating stage, and the anti-overflow control adjusts the damper to close and provide effective return air. At the same time, a large amount of condensed water will be generated on the inner wall of the drum discharge hopper due to the alternation of hot and cold. The inner wall is cleaned by the internal hot air blowing duct to quickly allow the condensed water droplets to flow downward through the inner wall into the guide trough for discharge.

[0028] Standby stage: After preheating, the equipment enters the standby stage. During this stage, fresh air and return air enter the drum.

[0029] At this time, the anti-overflow control damper is closed to maintain a stable production environment. Since the temperature inside the drum has been kept stable and balanced, no condensed water is generated on the inner wall of the drum discharge bin, the hot air cleaning pipeline is closed and no hot cleaning is performed.

[0030] Head stage: In this stage, steam will heat and humidify the tobacco leaves and atomize the material / water. A certain amount of overflow steam will be generated inside the drum at the head stage. When entering the head stage, the anti-overflow control adjusts the damper and the return air temperature for PID control to achieve a certain damper opening. The internal hot air cleaning pipeline is closed when the state enters the head stage.

[0031] Production stage: The steam overflow prevention control damper is jointly controlled with the return air temperature to achieve a certain damper opening; tail stage: During this stage, due to the cleaning of the material inside the drum, the overflow steam is more serious, and the steam overflow prevention control damper reaches the maximum opening.

[0032] The beneficial effects of the present invention are: the structural design is ingenious, and through the provision of a steam inlet cylinder and a discharge bin, it can not only improve the performance of material humidification and moisture recovery and save energy, but also effectively improve the steam overflow condition of the drum discharge port, avoid affecting the on-site environment, and eliminate the risk of on-site equipment being corroded and damaged by high-temperature steam and high humidity. At the same time, it solves the problem of steam generating condensation water on the surface of on-site equipment, and the hidden dangers of water-wet smoke and yellow-spot smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of Example 1 of the present invention;

[0034] Figure 2 This is a first schematic diagram of the partial structure of the discharge bin and the steam introduction sleeve of the present invention;

[0035] Figure 3 This is a schematic structural diagram of Example 3 of the present invention;

[0036] Figure 4 This is a second schematic diagram of the partial structure of the discharge bin and the steam introduction sleeve of the present invention;

[0037] Figure 5 This is a schematic diagram of the positions of the discharge bin door and the hot air blowing pipeline of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0039] 1. Discharge silo; 2. Steam inlet sleeve; 3. Production roller; 4. Steam inlet pipe; 5. Dehumidification cylinder; 6. Air amplifier; 7- Compressed air pipeline; 8- Nozzle; 11. Hanging ring; 12. Extension; 13. Exhaust gas outlet; 21. Drip trough; 22. Fitting part; 23. Hook; 24. Pipe clamp; 31- Feed inlet, 33- Hot air radiator, 34- Hot air circulation fan, 35- Hot air gentle blowing pipeline, 36- Hot air gentle blowing pipeline, 37- Overflow steam negative pressure pipeline, 38- Overflow steam opening valve, 39- Discharge silo door, 40- Hot air gentle blowing pipeline, 41- Overflow steam collection port. DETAILED DESCRIPTION

[0040] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0041] Example 1

[0042] like Figure 1 and 2 As shown, the steam collection system for overflow from the tobacco production roller of this embodiment includes a discharge bin 1 and a steam introduction sleeve 2. The discharge bin 1 is open at the bottom, and a first opening is provided on one side for the discharge end of the production roller 3 to penetrate. The steam introduction sleeve 2 is sleeved outside the lower opening of the discharge bin 1, and the upper end thereof is constricted and detachably connected to the lower outer wall of the discharge bin 1. The lower end of the steam introduction sleeve 2 extends to the bottom of the discharge bin 1 and bends toward the inside to form an annular drip groove 21. A drainage port is provided at the bottom of the drip groove 21. A steam introduction pipe 4 is fixed around the inner side of the steam introduction sleeve 2. Steam inlet holes are evenly distributed on the steam introduction pipe 4 along its length. The steam inlet hole is provided with a nozzle 8. The steam introduction pipe 4 is connected to the dehumidification cylinder 5 through a pipeline, and an air amplifier 6 is connected to the pipeline.

[0043] Generally, the air amplifier 6 is connected to a controller, and the operating status of the air amplifier 6 is controlled by the controller.

[0044] The specific working process is as follows:

[0045] When the amount of steam injected into the production drum 3 is greater than the dehumidification capacity of the equipment itself, the air amplifier 6 is controlled to participate in the operation of the equipment. During the operation of the air amplifier 6, negative pressure is generated at the steam inlet hole of the steam inlet pipe 4. The steam overflowing from the lower part of the discharge bin 1 will be guided into the inner area of ​​the steam introduction sleeve 2 under the action of negative pressure, and after being sucked through the steam inlet hole, it will finally be discharged through the dehumidification tube 5. In this process, the steam will contact the steam introduction sleeve 2. Affected by the external ambient temperature, the high-temperature steam will be partially condensed on the inner wall of the steam introduction sleeve 2, and then flow into the drip groove 21 along the inner wall, and finally be discharged from the drainage port at the bottom of the drip groove 21. The entire technical solution is cleverly designed in structure, which can effectively improve the steam overflow condition of the drum discharge port, avoid affecting the on-site environment, and eliminate the risk of on-site equipment being corroded and damaged by high-temperature steam and high humidity. At the same time, it solves the problem of steam generating condensed water on the surface of on-site equipment, and the hidden dangers of water-wet smoke and yellow-spot smoke.

[0046] refer to Figure 2 and Figure 4 A necking section is formed at the upper part of the steam introduction sleeve 2, which is inclined and extends upward and inward. The necking section is detachably connected to the lower outer wall of the discharge bin 1. The steam introduction pipe 4 is fixed around the inner side of the necking section, and the steam inlet hole is provided on the outer side of the steam introduction pipe 4.

[0047] In this embodiment, the upper portion of the steam introduction sleeve 2 is narrowed until it fits closely with the outer side of the discharge bin 1 to prevent steam from overflowing from the joint.

[0048] As a preferred embodiment, refer to Figure 4 A fitting portion 22 is provided on the upper part of the steam inlet sleeve 2 and extends vertically upward. A plurality of hooks 23 are connected to the outer side of the fitting portion 22 at intervals. A plurality of hanging rings 11 corresponding to the hooks 23 are connected to the outer side of the lower open portion of the discharge bin 1 at intervals. The hooks 23 are hung with the corresponding hanging rings 11, and the fitting portion 22 fits against the lower outer wall of the discharge bin 1.

[0049] In this embodiment, the upper part of the steam introduction sleeve 2 is tightly fitted with the outer wall of the discharge bin 1 through the fitting part 22, and then the connection between the steam introduction sleeve 2 and the discharge bin 1 is easily and quickly achieved through the cooperation of the hook 23 and the hanging ring 11. It is also very convenient to remove. Just release the hook and take out the steam introduction sleeve 2 downward.

[0050] Of course, the fitting portion 22 can also be connected to the side wall of the discharge bin 1 by bolts.

[0051] A rubber pad may be provided on the inner side of the fitting portion 22 to improve the sealing performance of the joint between the fitting portion 22 and the outer wall of the discharge bin 1 to prevent steam from escaping through the gap.

[0052] Optimally, the discharge bin 1 is a square shell structure, and the first opening is provided on one side thereof.

[0053] As a preferred embodiment, the lower ends of the four side walls of the discharge bin 1 are provided with mutually separate and bendable extension parts 12, and the extension parts 12 can be tilted and bent downward to the outside until the lower end falls above the drip trough 21.

[0054] In this embodiment, the design of the extension portion 12 can guide the condensed liquid on the inner wall of the discharge bin 1 into the dripping groove 21, preventing the condensed liquid from directly falling at the bottom of the discharge bin 1 and affecting the environment and tobacco quality.

[0055] Example 2,

[0056] The structure of this embodiment is basically the same as that of embodiment 1.

[0057] The difference is that

[0058] When the extension portion 12 is bent, it is ensured that the bending portion is a smooth transition (chamfer), thereby being more conducive to the flow of liquid along the extension portion 12 .

[0059] It should be noted that before the steam introduction sleeve 2 is installed, the extension portion 12 can be bent downward to a vertical position, and then after the steam introduction sleeve 2 is inserted, the extension portion 12 is bent outward to the bottom and rest above the drip groove 21.

[0060] Example 3

[0061] The structure of this embodiment is basically the same as that of embodiment 1.

[0062] The difference is that

[0063] refer to Figure 3 The top and both side walls of the discharge bin 1 are provided with waste gas discharge ports 13, and the waste gas discharge ports 13 are connected to the moisture discharge cylinder 5 through pipelines.

[0064] In this embodiment, the exhaust gas outlets 13 on the top and both side walls of the discharge bin 1 can extract a large amount of steam from the discharge bin 1, thereby reducing the amount of steam overflowing from the lower part of the discharge bin 1.

[0065] Taking into account the problem that the steam introduction sleeve 2 is easy to disassemble and assemble, a plurality of pipe clamps 24 are fixed at intervals around the inner side of the steam introduction sleeve 2. The steam introduction sleeve 2 is an annular tube, and the pipe clamp 24 is detachably connected to the steam introduction sleeve 2. A steam exhaust port is provided at one end of the steam introduction sleeve 2, and the steam exhaust port is connected and communicated with an adaptive joint on the side wall of the steam introduction sleeve 2. The joint is connected to the dehumidification cylinder 5 through a pipeline.

[0066] In this solution, the steam introduction sleeve 2 can be quickly disassembled and assembled by opening or binding the multiple pipe clamps 24, and the operation is very quick and simple.

[0067] In actual production, the structure of the longitudinal section of the steam inlet sleeve 2 should include a necked section that necks inward at the top, a vertical transition guide section in the middle, and a connecting section that bends inward at the bottom, as well as a drip groove 21 connected to the inner end of the connecting section. The vertical position of the inner side of the drip groove 21 should not protrude from the inner side of the discharge bin 1, so that it will not hinder the vertical downward falling of tobacco through the discharge bin 1.

[0068] Example 4

[0069] The structure of this embodiment is basically the same as that of embodiment 1.

[0070] The difference is that

[0071] like Figure 3-5 As shown,

[0072] The drum 3 is provided with an inlet 31 and a discharge bin 1; a hot air radiator 34 is provided below the drum 3; a hot air circulation fan 33 and a hot air gentle blowing pipe 35 are provided inside the drum 3; a hot air gentle blowing valve 36 is provided on the hot air gentle blowing pipe 35;

[0073] A hot air gentle blowing hole pipe 40 is provided in the discharge bin 1; the hot air gentle blowing hole pipe 40 is connected to the hot air gentle blowing pipeline 35 through a hot air gentle blowing valve 36; an overflow steam collecting port 41 is provided at the top of the discharge bin 1; an overflow steam negative pressure pipeline 37 is provided on the collecting port 41; an overflow steam negative pressure pipeline 37 is provided on the overflow steam opening valve 38; the discharge bin 1 is provided with a discharge bin door 39.

[0074] The opening degree of the overflow steam opening valve 38 is determined according to the state of the drum 3;

[0075] According to the production sequence of tobacco, the status of drum 3 is divided into: preheating stage, standby stage, head stage, production stage and tail stage;

[0076] During the preheating stage, the overflow steam opening valve 38 is closed, and the inner wall of the drum discharge bin 1 is cleaned through the internal hot air cleaning pipeline 35, and the condensed water droplets flow downward through the inner wall into the drip tank 21 for discharge.

[0077] In the standby stage, the overflow steam opening valve 38 is closed and the hot air cleaning pipeline is closed;

[0078] Material head stage: The overflow steam opening valve 38 is PID controlled with the return air temperature, and the hot air cleaning pipeline is closed;

[0079] Production stage: The overflow steam opening valve 38 is controlled in conjunction with the return air temperature. The damper opening of the overflow steam opening valve 38 is determined according to the humidity and temperature in the drum 3.

[0080] Tail stage: The damper of the overflow steam opening valve 38 reaches the maximum opening.

[0081] The detailed control of the opening of each stage is as follows;

[0082] In order to better control the humidity inside the drum, the size of the overflow steam opening valve 38 is automatically controlled according to the state of the drum 3;

[0083] The drum 3 states are divided into: preheating stage, standby stage, material head stage, production stage, and material tail stage. The anti-overflow control damper is automatically controlled to effectively control its opening according to the characteristics of different states.

[0084] Preheating stage: The drum 3 is preheated before production to meet the production process environment. In this stage, the fresh air pipeline system is provided with fresh air by the hot air circulation fan 34, which exchanges heat with the fresh air in the drum 3 through the hot air radiator 33. After passing through the damper with the hot and cold ratio and the set preheating temperature setting value PID control, it enters the drum 3; the dehumidification pipeline system is controlled by the external dehumidification damper and the internal dehumidification damper, and the fresh air enters the drum 3 through the return air pipeline through the internal dehumidification gate. This stage is the preheating stage, and the overflow steam opening valve 38 is closed to provide effective return air; at the same time, a large amount of condensation water will be generated on the inner wall of the discharge bin 1 of the drum 3 due to the alternation of hot and cold. The inner wall is cleaned by the internal hot air blowing pipeline 35, and the condensation water droplets quickly flow downward through the inner wall into the drip tank 21 for discharge.

[0085] Standby stage: After preheating is completed, the equipment enters the standby stage. During this stage, fresh air and return air enter the drum 3. At this time, the overflow steam opening valve 38 is closed to maintain a stable production environment. Since the internal temperature of the drum 3 has been kept stable and balanced, no condensate is generated on the inner wall of the discharge bin 1, and the hot air cleaning pipe 35 is closed, and no hot cleaning is performed.

[0086] Headstock stage: In this stage, steam will heat and humidify the tobacco shreds, atomize and add water. A certain amount of overflow steam will be generated inside the drum 3 at the headstock stage. When entering the headstock stage, the overflow steam opening valve 38 and the return air temperature are PID controlled to reach a certain air door opening, and the internal hot air cleaning pipeline is cleared. When the state enters the headstock stage, the hot air cleaning pipeline 35 enters the closed state.

[0087] Production stage: The overflow steam opening valve 38 is controlled in conjunction with the return air temperature to achieve a certain damper opening;

[0088] Tail stage: During this stage, the drum is blown clean of materials, so the overflowing steam is more serious. At this time, the steam overflow prevention control adjusts the damper to the maximum opening.

[0089] The opening value of the overflow steam opening valve 38, when the valve opening value is larger, the amount of overflow steam is less, but the return air temperature will be affected to a certain extent, so experiments are carried out at different stages of the production process, and a high-temperature water vapor analyzer is installed above the drum 3 discharge bin 1 to detect the overflow steam, and the optimal opening value at different stages is obtained.

[0090] The overflow steam is measured by installing a high-temperature steam analyzer at the discharge bin door 39. The measurement parameters are dew point value (temperature, 0-150 degrees, water content, g / kg);

[0091] Table 1

[0092]

[0093] Table 1 shows that when the dew point value (humidity, temperature) is higher, the more overflow steam there is. When the return air temperature of drum 3 is stable, it shows that the steam overflow damper opening value has no effect on production. That is, in the head stage, when the overflow steam damper opening is optimally 0 and 5 degrees, the return air temperature difference is 0, which means it has no effect on production. Considering the dew point value, the smaller the value, the less overflow steam there is.

[0094] Production stage: The steam overflow prevention control damper is controlled in conjunction with the return air temperature to achieve the optimal damper opening, as shown in Table 2.

[0095] Table 2

[0096]

[0097] Table 2 shows that when the steam overflow damper is closed at 0°C during the production phase, both the return air temperature and the overflow steam have a significant impact. When the damper openings reach 10°C and 20°C, the return air temperature difference is 0. However, the optimal dew point is at 20°C. Therefore, an opening of 20°C is selected for the production phase.

[0098] Tail stage: During this stage, the drum is being cleaned and blown clean, so the overflowing steam is more serious. At this time, the steam overflow prevention control adjusts the damper opening as shown in the following table.

[0099] Table 3

[0100]

[0101] As can be seen from Table 3, at the end of the material stage, the internal return air is gently blown to achieve the purpose of rapid discharge. However, at this time, the steam inside the drum overflows more during the gentle blowing process. We can see from Table 3 that when the drum is at the end of the material stage, the return air temperature difference is affected at openings of 0, 5, 10, and 20. As the damper opens wider, the difference is 0 at 30 / 40. Considering the dew point value, an opening value of 40 is selected.

[0102] This embodiment provides information on how to adjust the air damper opening at each stage, thereby eliminating the impact of steam condensation on tobacco as quickly as possible.

[0103] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. At present, the technical solution of this application has adopted the best implementation method of Example 1 and has been pilot-tested, that is, a small-scale experiment before large-scale mass production of the product; after the pilot-test was completed, a user usage survey was conducted in a small range, and the survey results showed that the user satisfaction was high; now preparations are underway for the formal production and industrialization of the product; the above is only a preferred specific implementation method of the present invention; but the protection scope of the present invention is not limited to this; any technician familiar with this technical field within the technical scope disclosed by the present invention; according to the technical solution and its improved conception, the equivalent replacement or change should be covered within the protection scope of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims within the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved;

[0104] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A system for collecting steam overflow from a tobacco production drum, characterized by: It comprises a discharge bin (1) and a steam introduction sleeve (2); the discharge bin (1) is open at the bottom, and a first opening is provided on one side for inserting the discharge end of the production roller (3); the steam introduction sleeve (2) is sleeved outside the lower opening of the discharge bin (1) and is detachably connected to the lower outer wall of the discharge bin (1); the lower end of the steam introduction sleeve (2) extends to the bottom of the discharge bin (1); the lower end of the steam introduction sleeve (2) is provided with a drip groove (21) bent inwardly to form a ring; a drainage port is provided at the bottom of the drip groove (21); a steam introduction pipe (4) is fixed around the inner side of the steam introduction sleeve (2), and steam inlet holes are uniformly distributed along the length direction of the steam introduction pipe (4); the steam introduction pipe (4) is connected to the dehumidification cylinder (5) through a pipeline, and the pipeline is connected to an air amplifier (6); The upper portion of the steam introduction sleeve (2) is tilted upward and inward to form a necking section, and the necking section is detachably connected to the lower outer wall of the discharge bin (1); the steam introduction pipe (4) is fixed around the inner side of the necking section; The upper portion of the steam introduction sleeve (2) is provided with a vertically upward fitting portion (22), and a plurality of hooks (23) are provided on the outer side of the fitting portion (22), and the hooks (23) are spaced around the outer side of the fitting portion (22); A hanging ring (11) is provided on the outer side of the lower opening of the discharge bin (1); the hanging ring (11) is adapted to the hook (23); the hook (23) is connected to the corresponding hanging ring (11), and the fitting portion (22) fits the lower outer wall of the discharge bin (1); The discharge bin (1) is a square shell structure, and one side thereof is provided with the first opening; The lower ends of the four side walls of the discharge bin (1) are provided with mutually separated and bendable extensions (12), and the extensions (12) are inclined downward and outward, and are bent to the lower ends to fall above the drip trough (21); The top and both side walls of the discharge bin (1) are provided with waste gas discharge ports (13), and the waste gas discharge ports (13) are connected to the moisture discharge cylinder (5) through pipelines. A plurality of pipe hoops (24) are fixed around the inner side of the steam introduction sleeve (2) at intervals. The steam introduction pipe (4) is an annular pipe. The pipe hoops (24) are detachably connected to the steam introduction sleeve (2). A steam outlet is provided at one end of the steam introduction sleeve (2). The steam outlet is connected and communicated with a fitting joint on the side wall of the steam introduction sleeve (2). The fitting is connected to the dehumidification cylinder (5) through a pipeline. The front end of the dehumidifying cylinder (5) is provided with an adjustable damper, and a hot air pipe system for blowing away the condensed water on the inner wall of the production drum (3) is installed above the discharge bin; An overflow steam collecting port (41) is provided on the top of the discharge bin (1); and an overflow steam negative pressure pipeline (37) is provided on the overflow steam collecting port (41).

2. The system for collecting steam overflowing from a tobacco production drum according to claim 1, characterized in that: The production drum (3) is provided with a material inlet (31); a hot air radiator (33) is provided below the production drum (3); a hot air circulation fan (34) and a hot air gentle blowing pipeline (35) are provided in the production drum (3); a hot air gentle blowing valve (36) is provided on the hot air gentle blowing pipeline (35); a hot air gentle blowing hole pipe (40) is provided in the discharge bin (1); the hot air gentle blowing hole pipe (40) and the hot air gentle blowing pipeline (35) are connected via the hot air gentle blowing valve (36); The overflow steam negative pressure pipeline (37) is provided with an overflow steam opening valve (38); and the discharge bin (1) is provided with a discharge bin door (39).

3. The system for collecting steam overflowing from a tobacco production drum according to claim 2, characterized in that: The opening degree of the overflow steam opening valve (38) is determined according to the state of the production drum (3); According to the production sequence of tobacco, the production drum (3) states are divided into: preheating stage, standby stage, head stage, production stage and tail stage; During the preheating stage, the overflow steam opening valve (38) is closed, and the inner wall of the production drum discharge bin (1) is cleaned through the internal hot air blowing pipe (35), and the condensed water droplets flow downward through the inner wall into the drip tank (21) and are discharged; During the standby stage, the overflow steam opening valve (38) is closed and the hot air gentle blowing pipeline is closed; Material head stage: the overflow steam opening valve (38) is PID controlled with the return air temperature, and the hot air gentle blowing pipeline is in the closed state; Production stage: the overflow steam opening valve (38) is controlled in conjunction with the return air temperature, and the damper opening of the overflow steam opening valve (38) is determined according to the humidity and temperature in the production drum (3); Tail stage: The damper of the overflow steam opening valve (38) reaches the maximum opening.

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