阅读说明：本技术 一种利用超声波加湿的烟包松散装置与方法 (Tobacco bale loosening device and method utilizing ultrasonic humidification ) 是由 刘洪涌 彭振全 房华伟 王永金 冯波 于 2020-07-24 设计创作，主要内容包括：本发明公开了一种利用超声波加湿的烟包松散装置和方法,属于烟草加工技术领域。包括外腔体及设置在所述外腔体内的烟包接送装置,超声波蒸汽发生器,加湿腔体,所述超声波蒸汽发生器用于产生液态水雾；所述加湿腔体罩在所述烟包接送装置的上方,所述加湿腔体内设置有两组喷管,该两组喷管分别与所述超声波蒸汽发生器连通；其中一组喷管的喷射方向与烟包层面相同,另一组喷管的喷射方向与烟包层面具有夹角。其中一组喷管沿层面方向方向对烟包反复喷吹蒸汽,蒸汽沿层间隙渗入烟包内,另一组喷管喷吹使吸湿升温后的烟包片层发生分离,烟包层间分离后蒸汽更容易进到烟包内部,保证内外叶片吸湿升温更均匀,从而达到片烟包松散的效果。(The invention discloses a tobacco bale loosening device and method utilizing ultrasonic humidification, and belongs to the technical field of tobacco processing. The tobacco bale receiving and feeding device comprises an outer cavity, a tobacco bale receiving and feeding device arranged in the outer cavity, an ultrasonic steam generator and a humidifying cavity, wherein the ultrasonic steam generator is used for generating liquid water mist; the humidifying cavity is covered above the cigarette packet receiving and conveying device, two groups of spray pipes are arranged in the humidifying cavity, and the two groups of spray pipes are respectively communicated with the ultrasonic steam generator; the spraying direction of one group of spraying pipes is the same as the tobacco bale layer surface, and the spraying direction of the other group of spraying pipes forms an included angle with the tobacco bale layer surface. Steam is repeatedly sprayed to the tobacco bale along the layer direction by one group of spray pipes, the steam permeates into the tobacco bale along the layer gaps, the tobacco bale sheets after moisture absorption and temperature rise are separated by spraying of the other group of spray pipes, the steam is easier to enter the tobacco bale after the tobacco bale layers are separated, moisture absorption and temperature rise of the inner blade and the outer blade are more uniform, and therefore the effect that the tobacco sheet bales are loose is achieved.)

1. A tobacco bale loosening device utilizing ultrasonic humidification is characterized in that: the tobacco bale receiving and feeding device comprises an outer cavity, a tobacco bale receiving and feeding device arranged in the outer cavity, an ultrasonic steam generator and a humidifying cavity, wherein the ultrasonic steam generator is used for generating liquid water mist; the humidifying cavity is covered above the cigarette packet receiving and conveying device, two groups of spray pipes are arranged in the humidifying cavity, and the two groups of spray pipes are respectively communicated with the ultrasonic steam generator; the spraying direction of one group of spraying pipes is the same as the tobacco bale layer surface, and the spraying direction of the other group of spraying pipes forms an included angle with the tobacco bale layer surface.

2. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 1, wherein: the ultrasonic steam generator comprises an ultrasonic generating device, a water vapor tank, a liquid level meter, a hot water supply device and a humidifying fan; the hot water supply device is communicated with the water vapor tank; the ultrasonic generating device is installed the lower part of vapor jar is inserted in the vapor jar, the vapor jar is used for holding hot water, the level gauge is used for monitoring hydrothermal water level, the air outlet of humidification fan with vapor jar intercommunication, the intercommunication position of both is located the top of the surface of water, the upper portion of vapor jar with two sets of spray tubes intercommunication in the humidification cavity.

3. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 2, wherein: the temperature of hot water contained in the steam tank is lower than 100 ℃, and preferably 60-70 ℃.

4. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 1, wherein: still include the moisture removal device, the moisture removal device is used for will following incomplete steam in the outer cavity is discharged.

5. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 4, wherein: arrange the tide device and include support, arrange the tide fan and arrange the tide pipeline, arrange the tide fan by the support is fixed on the outer cavity, arrange the induction port of tide fan with outer cavity intercommunication, its gas vent with arrange the tide pipeline intercommunication.

6. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 1, wherein: the cigarette packet receiving and delivering device is a belt conveying mechanism, a belt supporting plate is arranged between the upper and lower breadth of a conveying belt of the belt conveying mechanism, and the upper breadth of the conveying belt is arranged on the belt supporting plate; the humidifying cavity covers the edge of the belt supporting plate.

7. The tobacco bale loosening device utilizing ultrasonic humidification as claimed in claim 6, wherein: the cigarette packet receiving and conveying device further comprises a negative pressure cleaning device, and the negative pressure cleaning device is arranged below the lower part of the conveying belt.

8. The tobacco bale loosening device using ultrasonic humidification as claimed in any one of claims 1 to 7, wherein: the included angle between the spraying direction of the other group of spraying pipes and the tobacco bale layer surface is 30-60 degrees.

9. A tobacco bale loosening method utilizing ultrasonic humidification is characterized in that: along the layer direction of the tobacco bale, the tobacco bale in the humidifying cavity is sprayed by using low-temperature steam formed by ultrasonic atomization, and the low-temperature steam permeates into the tobacco bale along the layer gap; then, spraying the tobacco bale by using low-temperature steam formed by ultrasonic atomization along the direction forming an angle with the tobacco bale surface to separate the tobacco flake layer after moisture absorption and temperature rise; the low-temperature steam is liquid water mist; in the spraying process, the cigarette packet is driven to move back and forth, or the cigarette packet is sprayed in a back and forth movement mode.

10. The tobacco bale loosening method using ultrasonic humidification as claimed in claim 9, wherein: the temperature of the low-temperature steam is 60-70 ℃; after the low-temperature steam is sprayed for one minute to two minutes along the layer surface direction of the cigarette packets, the spraying is switched to the direction forming an angle with the layer surface of the cigarette packets for continuously spraying for one minute, and the angle is 30 degrees to 60 degrees.

Technical Field

The invention relates to the technical field of tobacco processing, in particular to a tobacco bale loosening device and method utilizing ultrasonic humidification.

Background

At present, the raw material of the tobacco shred production line is a cigarette packet with the size specification of 1080 x 640 x 670 (length x width x height), the cigarette packet is formed by compacting the separated tobacco stems and leaves of tobacco leaves, and the moisture of the leaves is only 12%. When the tobacco bale enters the production line, the compacted leaves are loosened and allowed to regain moisture of about 17%, and the process is called a loosening and moisture regaining process. The tobacco bale loosening and moisture regaining process mainly has three modes, namely slicing and loosening and moisture regaining; secondly, vacuum moisture regain and loosening moisture regain; and thirdly, loosening by microwave heating and loosening and moisture regaining. The existing tobacco bale loosening and moisture regaining method also has the problems of large tobacco flake breakage or poor loosening effect and the like, and can not well meet the process requirements.

Slicing + loosening moisture regain is the initial method of loosening moisture regain of cigarette packets. The method comprises the steps of cutting a cigarette packet with the size specification of 1080 x 640 x 670 (length, width and height) into 4-5 blocks in the length direction, then sending the cigarette block into a rotary through body (a moisture regaining cylinder), spraying steam and atomized water into the cylinder, after moisture absorption and temperature rise of blades on the outer layer, stripping the cigarette block when the cigarette block rolls, continuously rolling the cigarette block in the rotary cylinder, continuously stripping the blades on the outer layer, and finally completing loosening and moisture regaining. Because the moisture content of the tobacco bale leaf is only 12%, when the moisture content is low, the tobacco bale is cut into pieces, so that large broken pieces can be generated, and broken pieces and dust can be generated in the process of conveying the tobacco bale to the moisture regaining cylinder. After the tobacco cake gets into the moisture regain section of thick bamboo, along with the rotation of barrel, the tobacco cake is got rid of, rolls the motion, because just when getting into the moisture regain section of thick bamboo, tobacco cake moisture is less, so in the first third of barrel one section, get rid of, roll the motion and can produce very big garrulous. In addition, the tobacco blocks absorb moisture gradually from outside to inside, so that moisture of the remoistened leaves is uneven, and the innermost tobacco block can be loose.

For example, the invention discloses a partitioned moisture regaining system and process (application number: 201110360066.8, application date: 2011, 11, 14), which is invented in China 'tobacco block loosening and partitioned moisture regaining system and process'.

The vacuum moisture regaining and loosening moisture regaining method comprises the steps of cutting a tobacco bale into 4-5 blocks in the length direction, then loading the tobacco blocks into a frame rail, then sending the frame rail filled with the tobacco blocks into a closed cavity, then vacuumizing the cavity, and then injecting saturated steam into the cavity, so that tobacco leaves inside the tobacco blocks can also absorb moisture quickly, the tobacco blocks subjected to primary moisture absorption and moisture regaining are loosened into a plurality of small blocks, subsequent loosening and moisture regaining are facilitated, and then the pre-loosened tobacco blocks are sent into a moisture regaining cylinder for loosening and moisture regaining. The method can effectively reduce the broken pieces, and the water content of the loosened and remoistened leaves is relatively uniform. The method has the defect that during the vacuum pumping, part of the aroma generated during the alcoholization of the tobacco leaves is pumped away, so that the aroma loss of the tobacco leaves is caused. Still another is that there is still a need to cut the low moisture cigarette packets into several pieces with some crumbling.

For example, the Chinese patent 'a novel tobacco leaf vacuum moisture regaining machine' (application number: 201620248610.8, application date: 2016, 3, 29), discloses a novel tobacco leaf vacuum moisture regaining machine, wherein an atomizing cover is arranged on a humidifying and atomizing nozzle, and the atomizing cover can prevent dust and impurities in tobacco leaves from being attached to the atomizing nozzle to cause nozzle blockage during vacuum pumping. However, the problem of smoke extraction and the breaking up of the packets of cigarettes by the pieces cannot be overcome.

The tobacco bale is not cut into blocks by microwave heating and is loosened, the whole tobacco bale is conveyed into a closed cavity, then microwaves are emitted to the tobacco bale in the cavity, the tobacco bale is heated to a certain temperature (about 50 ℃) by utilizing the heat effect of the microwaves, the bonding force between blades is greatly reduced after the temperature is raised, and the whole tobacco bale is loosened into a plurality of small blocks, so that the subsequent loosening and moisture regaining are facilitated. The pre-loosened tobacco bale is sent into a moisture regaining cylinder for loosening and moisture regaining, so that the breakage of the blades is effectively reduced. However, because the tobacco leaves have different grades, the binding power of the tobacco leaves also has difference, and the tobacco leaves with large binding power are loosened by microwave heating, so the effect is not good. In addition, the moisture of the raw material cigarette packet is low, and particularly in winter, the temperature rise of the cigarette packet is difficult to guarantee. There are also microwave leakage safety issues.

In addition, for example, the invention patent of china "method and apparatus for loosening tobacco bale by using warm and humid gas" (application number: 200910027132.2, application date: 2009, 5.22.a), discloses a tobacco bale loosening treatment method and apparatus which can obtain a higher loosening rate, effectively maintain the fragrance of sheet tobacco and have a lower process cost on the premise of keeping a lower pulverization rate, and adopts warm and humid air flow to peel and loosen, but the air flow temperature is still higher, which may cause the loss of the fragrance quality of tobacco, and in addition, because the adopted jet air flow is horizontal jet, the inner loosening and the inner and outer moisture absorption are uneven. This patent adopts gas injection, if adopt saturated steam, because steam temperature is higher, directly spout to the tobacco leaf, can cause the injury to the quality of tobacco leaf itself, if adopt the lower saturated humid air of temperature, the water content is too little again, is not enough in that the tobacco flake moisture absorption is loose.

Disclosure of Invention

The invention provides a tobacco bale loosening device and method utilizing ultrasonic humidification.

The invention relates to a tobacco bale loosening device utilizing ultrasonic humidification, which comprises an outer cavity, a tobacco bale receiving and conveying device arranged in the outer cavity, an ultrasonic steam generator and a humidifying cavity, wherein the ultrasonic steam generator is used for generating liquid water mist; the humidifying cavity is covered above the cigarette packet receiving and conveying device, two groups of spray pipes are arranged in the humidifying cavity, and the two groups of spray pipes are respectively communicated with the ultrasonic steam generator; the spraying direction of one group of spraying pipes is the same as the tobacco bale layer surface, and the spraying direction of the other group of spraying pipes forms an included angle with the tobacco bale layer surface. The first group of spray pipes repeatedly spray low-temperature steam (namely, liquid water mist) to the tobacco bale along the tobacco bale layer direction, the steam permeates into the tobacco bale along the layer gap, the steam is sprayed to the second group of spray pipes after being sprayed for a period of time, the tobacco bale layers after moisture absorption and temperature rise are separated, the steam is easier to enter the tobacco bale after the tobacco bale layers are separated, therefore, the moisture absorption and temperature rise of the inner and outer blades can be more uniform, the bonding force of the blades after the moisture absorption and temperature rise is remarkably reduced, and the loosening effect of the tobacco sheet bales is achieved.

As a further improvement of the invention, the ultrasonic steam generator comprises an ultrasonic generating device, a water vapor tank, a liquid level meter, a hot water supply device and a humidifying fan; the hot water supply device is communicated with the water vapor tank; the ultrasonic generating device is installed the lower part of vapor jar is inserted in the vapor jar, the vapor jar is used for holding hot water, the level gauge is used for monitoring hydrothermal water level, the air outlet of humidification fan with vapor jar intercommunication, the intercommunication position of both is located the top of the surface of water, the upper portion of vapor jar with two sets of spray tubes intercommunication in the humidification cavity. The water level is monitored by a liquid level meter, and when the water level is too low, hot water is supplemented by a hot water supply device. The ultrasonic generator acts on the hot water in the water vapor tank to generate liquid water mist, and the liquid water mist is blown out of the water vapor tank by the humidifying fan and finally sprayed out through the spray pipe.

As a further improvement of the invention, the temperature of the hot water contained in the water vapor tank is lower than 100 ℃, preferably 60-70 ℃. The low-temperature steam with the temperature lower than 100 ℃ is sprayed on the tobacco flakes, so that the tobacco flakes are not damaged. The water temperature of 60-70 ℃ ensures the temperature of steam, and is most beneficial to the moisture absorption of the tobacco flakes.

As a further improvement, the humidifier also comprises a moisture discharging device which is used for discharging residual steam in the outer cavity outside the humidifying cavity body, so that the production environment is ensured to be clean. Arrange the tide device and include the support, arrange the tide fan and arrange the tide pipeline, arrange the tide fan by the support is fixed on the outer cavity, arrange the induction port of tide fan with outer cavity intercommunication, its gas vent with arrange the tide pipeline intercommunication, arrange the tide fan and will spill over the incomplete steam of losing in the outer cavity from the humidification cavity and arrange to outdoor through arranging the tide pipeline.

As a further improvement of the invention, the cigarette packet receiving and delivering device is a belt conveying mechanism, a belt supporting plate is arranged between the upper and lower breadth of a conveying belt of the belt conveying mechanism, and the upper breadth of the conveying belt is arranged on the belt supporting plate; the humidifying cavity covers the edge of the belt supporting plate, and the belt supporting plate plays a supporting role in the conveying belt.

As a further improvement of the invention, the cigarette packet receiving and conveying device also comprises a negative pressure cleaning device which is arranged below the lower part of the conveying belt. Can effectively and timely clear up the tobacco powder, dust and condensed water stuck on the belt.

As a further improvement of the invention, the included angle between the spraying direction of the other group of spray pipes and the tobacco bale layer surface is 30-60 degrees, which is beneficial to the 'low-temperature steam' entering the inner part between the tobacco flake layers, promotes the separation of the tobacco flakes and ensures that the inner and outer tobacco flakes absorb moisture and heat more uniformly.

According to the tobacco bale loosening method utilizing ultrasonic humidification, the raw material tobacco bale does not need to be cut into pieces, the whole tobacco bale is placed into a closed or nearly closed cavity, and low-temperature steam is generated by utilizing ultrasonic waves and is actually water mist formed by liquid water particles. Along the layer direction of the tobacco bale, the tobacco bale in the humidifying cavity is sprayed by using low-temperature steam formed by ultrasonic atomization, and the low-temperature steam permeates into the tobacco bale along the layer gap; then, spraying the tobacco bale by using low-temperature steam formed by ultrasonic atomization along the direction forming an angle with the tobacco bale surface to separate the tobacco flake layer after moisture absorption and temperature rise; the low-temperature steam is liquid water mist; in the spraying process, the cigarette packet is driven to move back and forth, or the cigarette packet is sprayed in a back and forth movement mode.

As a further improvement of the invention, the temperature of the low-temperature steam is 60-70 ℃; after the low-temperature steam is sprayed for one minute to two minutes along the layer surface direction of the cigarette packets, the spraying is switched to the direction forming an angle with the layer surface of the cigarette packets for continuously spraying for one minute, and the angle is 30 degrees to 60 degrees.

When the tobacco bale is loosened, the raw material tobacco bale does not need to be cut into pieces, but the whole tobacco bale is placed into a closed or nearly closed cavity, ultrasonic waves are utilized to generate low-temperature steam (water mist formed by ultrasonic atomization) at 60-70 ℃, then the low-temperature steam is blown into the tobacco bale, blades absorb moisture and heat in warm and humid gas quickly, the tobacco bale after moisture absorption and temperature rise becomes loose, the blades are not easy to break, and the tobacco bale after primary loosening is sent to a subsequent moisture-regaining cylinder to finish the moisture-regaining process.

Drawings

Fig. 1a is a left side view of an apparatus for ultrasonic humidifying of a loose bale of tobacco in accordance with the present invention;

fig. 1b is a front view of the apparatus for ultrasonic moistening of loose tobacco packets in accordance with the present invention;

FIG. 1c is a top view of the apparatus for ultrasonic humidification of a bale of loose tobacco of the present invention;

FIG. 2 is a schematic diagram of an ultrasonic steam generator of the present invention;

fig. 3a is a front view of the cigarette packet receiving and feeding device in the present invention;

fig. 3b is a left side view of the cigarette packet receiving and conveying device in the invention;

FIG. 4a is a schematic front view of the outer chamber of the present invention;

FIG. 4b is a left side view of the outer chamber of the present invention;

FIG. 5a is a front view of a humidifying chamber according to the present invention;

FIG. 5b is a left side view of the humidifying chamber in the present invention

FIG. 6 is a schematic view of the moisture removing device of the present invention.

The reference numerals in the schematic drawings illustrate:

1. an outer cavity; 2. a cigarette packet receiving and conveying device; 3. an ultrasonic steam generator; 4. a humidifying cavity; 5. a moisture removal device; 2-1, an ultrasonic wave generating device; 2-2, a water vapor tank; 2-3, a liquid level meter; 2-4, a hot water supply device; 2-5, a humidifying fan; 3-1, a frame; 3-2, belt rollers; 3-3, a conveyer belt; 3-4, a negative pressure cleaning device; 3-5, carrying a belt plate; 3-6, intermediate roll; 4-1, an outer cavity body; 4-2, a 'low-temperature steam' connecting pipeline; 4-3, a moisture removal interface; 4-4, an outer cavity door; 5-1, humidifying the cavity body; 5-2, a 'low-temperature steam' spray pipe; 5-21, a first 'low-temperature steam' spray pipe; 5-22 parts of a second low-temperature steam spray pipe; 5-3, a humidifying cavity door; 6-1, a bracket; 6-2, a moisture removal fan; 6-3, a moisture removal pipeline.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

The present invention will be further described with reference to the following examples.

The invention relates to a tobacco bale loosening device utilizing ultrasonic humidification, which adopts specific devices as shown in figures 1a, 1b and 1c, and comprises an outer cavity 1, a tobacco bale receiving and conveying device 2, an ultrasonic steam generator 3, a humidifying cavity 4 and a moisture removing device 5.

With reference to fig. 1a, 1b, 1c and 3, the unpacked raw material cigarette packet enters a humidifying cavity 4 from an upstream conveying device through a cigarette packet receiving and sending device 2 installed in an outer cavity 1, the lower end of the humidifying cavity 4 is very close to the cigarette packet receiving and sending device 2, specifically, the distance between the lower end of the humidifying cavity 4 and a belt supporting plate 3-5 of the cigarette packet receiving and sending device 2 is very small, and an almost sealed cavity is formed. After the tobacco sheet package reaches a preset position, the doors at the two ends of the outer cavity 1 and the humidifying cavity 4 are closed simultaneously. The ultrasonic steam generator 3 generates low-temperature steam at the temperature of less than 100 ℃ and injects the low-temperature steam into the humidifying cavity 4. After humidification is finished, wet gas overflowing from the humidification cavity 4 to the outer cavity 1 in the humidification process is discharged to the outside by the moisture discharge device 5, and clean production environment is ensured.

Referring to fig. 2, the ultrasonic steam generator 3 is composed of an ultrasonic generator 2-1, a water vapor tank 2-2, a liquid level meter 2-3, a hot water supply device 2-4, a humidifying fan 2-5 and the like. The ultrasonic generator 2-1 is arranged at the lower part of the steam tank 2-2 and is inserted into the steam tank 2-2, and hot water with the temperature less than 100 ℃ is filled in the steam tank. The air outlet of the humidifying fan 2-5 is communicated with the water vapor tank 2-2, and the communication position of the air outlet and the water vapor tank is positioned above the water level. The hot water supply device 2-4 is communicated with the upper part of the steam tank 2-2, the liquid level meter 2-3 monitors the water level of hot water, when the water level is lower than a set value, the hot water supply device supplies hot water to the steam tank, and the temperature of the hot water is lower than 100 ℃, preferably 60-70 ℃. The upper part of the water vapor tank 2-2 is provided with an air outlet which is communicated with a spray pipe in the humidifying cavity through a valve, and the humidifying fan 2-5 blows out low-temperature steam (namely water mist formed by ultrasonic atomization) in the water vapor tank from the air outlet and enters the spray pipe. When ultrasonic waves generated by the ultrasonic wave transmitting device 2-1 are transmitted in hot water, water is torn into water particles with the diameter of 1-5 microns by utilizing the mechanical effect and the cavitation effect of the ultrasonic waves to form water mist similar to steam, the steam does not belong to a gas state but a liquid state in the state of matter, so that the steam is not limited by the humidity of saturated air, larger water can be carried, and the energy consumption for generating the steam is lower because the change of the state of matter does not occur. The ultrasonic wave does not heat water, and the low-temperature steam generated by atomization is lower than 100 ℃. The low-temperature steam is temporarily stored in the steam tank 2-2, and when humidification is needed, the low-temperature steam is sent into the humidification cavity 4 by the humidification fan 2-5.

With reference to fig. 3a and 3b, the cigarette packet receiving and delivering device 2 adopts a belt conveying mechanism and consists of a frame 3-1, a belt roller 3-2, a conveying belt 3-3, a negative pressure cleaning device 3-4 and a belt supporting plate 3-5. The belt supporting plate 3-5 is arranged between the upper and lower breadth of the conveying belt 3-3 to support the upper breadth of the conveying belt 3-3. The cigarette pack humidifying device is characterized in that the power device is separated from the body, the power device is arranged outside the outer cavity 1 due to the fact that the working condition in the outer cavity 1 is wet, safety is improved, the service life of the cigarette pack humidifying device is prolonged, power is transmitted to the belt roller 3-2 through the transmission device, the belt roller 3-2 drives the conveying belt 3-3 to move, the cigarette pack enters and exits the humidifying cavity 4, and the cigarette pack is driven to reciprocate when the cigarette pack is humidified. The negative pressure cleaning device 3-4 is arranged at the lower part of the conveyer belt 3-3, so that the tobacco powder, dust and condensed water stuck on the belt can be cleaned in time. It is noted that both the power unit and the transmission may be implemented using existing structures, such as an electric motor and a belt.

Further, referring to fig. 3a, a belt roller 3-2 is provided at a lower middle portion of the frame 3-1, and in order to secure a driving effect and driving stability, an intermediate roller 3-6 is provided, the intermediate roller 3-6 being provided above a side of the belt roller 3-2 and tensioning the belt 3-3 and keeping the belt 3-3 in surface contact with the belt roller 3-2, preferably, a surface in contact with more than one-half circumference of the belt roller 3-2.

With reference to fig. 4a and 4b, the outer chamber 1 is composed of an outer chamber body 4-1, a "low temperature steam" connecting pipe 4-2, a moisture discharging port 4-3, and an outer chamber door 4-4 for entering and exiting the chamber. The outer cavity 1 plays a role of an integral framework, and the humidifying cavity 4, the low-temperature steam connecting pipeline 4-2 and the moisture exhausting interface 4-3 can be fixed through the outer cavity 1. Meanwhile, residual steam overflowing from the humidifying cavity 4 can be collected and then discharged outdoors by the moisture discharging device 5, so that the working environment is clean.

With reference to fig. 5a and 5b, the humidification chamber 4 is composed of a humidification chamber body 5-1, a nozzle, a humidification chamber door 5-3 for entering and exiting the chamber, and a connection bracket 5-4. The lower end of the humidifying cavity 4 is open, the humidifying cavity covers the tobacco bale receiving and conveying device 2, a gap is reserved between the bottom of the humidifying cavity and the belt supporting plates 3-5 of the tobacco bale receiving and conveying device 2, residual steam which is not absorbed by blades of the tobacco bale overflows to the outer cavity 1 from the gap, and the residual steam is discharged to the outside through the moisture discharging device 5 arranged on the outer cavity 1. The spray pipes on the humidifying cavity are divided into two groups, the spray wind direction of one group of spray pipes is consistent with the tobacco bale layer surface, the wind outlet direction of the other group of spray pipes is 30-60 degrees of included angle with the tobacco bale layer surface, the automatic valve is arranged at the inlet of the spray pipes, the automatic valve is connected with the gas outlet of the water vapor tank, and the switching of the steam between the two groups of spray pipes is realized through the opening and closing of the valve. Wherein the nozzle is preferably a "low temperature steam" nozzle 5-2. The humidifying cavity 4 is fixed on the outer cavity through a connecting bracket 5-4. The tobacco bale comprises a plurality of stacked tobacco leaves, and the layer surface of the tobacco bale refers to the surface where the surfaces of the tobacco leaves are located. No matter spray along the aspect direction or spray at an angle, the spray is sprayed on the side face formed by stacking the tobacco leaves, so that the design enables the low-temperature steam to be sprayed on the layer gap, and the low-temperature steam is more favorable for entering the tobacco bale.

Referring to fig. 6, the moisture removing device 5 is composed of a support 6-1, a moisture removing fan 6-2 and a moisture removing pipeline 6-3, the moisture removing fan 6-2 is fixed on the outer cavity 1 through the support 6-1, an air suction port of the moisture removing fan 6-2 is communicated with a moisture removing interface 4-3, the moisture removing pipeline 6-3 is communicated with an air exhaust port of the moisture removing fan, and the moisture removing fan 6-2 removes residual steam from the outside of the humidifying cavity 4 to the outer cavity 1 to the outside through the moisture removing pipeline 6-3.

With reference to fig. 1a, 1b and 1c, the embodiment of the present embodiment is that the distance between the lower end of the humidifying cavity 4 and the carrier strip plates 3-5 of the cigarette packet receiving and feeding device 2 is small, so as to form an almost sealed cavity. After the tobacco sheet package reaches a preset position, the doors at the two ends of the outer cavity 1 and the humidifying cavity 4 are closed simultaneously. The low-temperature steam with the temperature of less than 100 ℃ generated by the ultrasonic steam generator 3 is cached in the steam tank 2-2, when the humidification cavity 4 and the outer cavity 1 are confirmed to be sealed, the humidification fan 2-5 is started, low-temperature steam with the temperature of less than 100 ℃ is injected into the humidification cavity 4, the low-temperature steam is injected towards a cigarette packet through two groups of low-temperature steam spray pipes 5-2, the air outlet direction of one group of low-temperature steam spray pipes 5-2 is consistent with the cigarette packet layer, and an included angle of 30-60 degrees is formed between the air outlet direction of the other group of low-temperature steam spray pipes 5-2 and the cigarette packet layer.

When the invention loosens the cigarette packet, the cigarette packet is placed on the conveying belt in the direction that the tobacco flake layer surface is vertical to the conveying belt, the humidifying fan is started, the low-temperature steam is firstly sprayed to the cigarette packet from the first low-temperature steam spraying pipe 5-21 with the wind direction consistent with the tobacco flake layer surface, meanwhile, the cigarette packet horizontally reciprocates along the conveying belt, the first low-temperature steam spraying pipe 5-21 repeatedly sprays low-temperature steam (the cigarette packet can also be realized by adopting the way that the cigarette packet is not moved but the spraying pipe is moved) to the cigarette packet along the tobacco flake layer surface, the first low-temperature steam spraying pipe blows towards the tobacco flake layer surface, the low-temperature steam is easy to permeate into the cigarette packet along the layer gap, the cigarette packet absorbs moisture and heats up to be loose, after one minute to two minutes of spraying, the low-temperature steam is switched to be sprayed out from the second low-temperature steam spraying pipe 5-22, the cigarette packet continuously horizontally reciprocates along the conveying belt, because the spraying direction, the low-temperature steam sprayed by the second low-temperature steam spraying pipes 5-22 can easily enter between two tobacco leaves, so that the tobacco bale sheet layers after moisture absorption and temperature rise are separated, and the low-temperature steam after the tobacco bale layers are separated can more easily enter the tobacco bale, thereby ensuring that the moisture absorption and temperature rise of the inner blade and the outer blade are more uniform. And after the second low-temperature steam spray pipe 5-22 sprays for one minute, the humidification is finished. The wet gas overflowing from the humidifying cavity 4 to the outer cavity 1 in the humidifying process is discharged to the outside by the moisture discharging device 5, so that the clean production environment is ensured. The binding power of the tobacco leaves after moisture absorption and temperature rise is obviously reduced, so that the effect of loosening the tobacco leaf packets is achieved. At this time, the doors at the two ends of the outer cavity 1 and the humidifying cavity 4 are opened simultaneously. The pre-loosened sheet tobacco package is sent out of the humidifying cavity 4 and the outer cavity 1 to downstream equipment by the tobacco package receiving and sending device 2, and then is sent into a moisture regaining cylinder for moisture regaining.

Because the temperature of the steam sprayed into the humidifying cavity is low and is less than 100 ℃, when the steam is sprayed onto the tobacco flakes, the tobacco flakes are not damaged. Especially, the moisture with the temperature of (60-70) DEG C is most beneficial to the moisture absorption of the tobacco sheets. The tobacco bale is placed on the conveyer belt 3-3 in the vertical direction of the layer surface, which is more beneficial to the wet gas entering the tobacco bale.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.