Internal cross-flow type tobacco drying machine

A drying machine and tobacco technology, which is applied in the fields of tobacco, tobacco preparation, and tobacco processing, can solve the problems of slow drying speed, long drying time, and reduced work efficiency, and achieve reduced processing intensity, reduced equipment volume, and improved filling. The effect of recharging

Inactive Publication Date: 2017-01-25
QINHUANGDAO TOBACCO MACHINERY
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AI-Extracted Technical Summary

Problems solved by technology

[0003] Due to the use of conduction, forced convection and other heating methods to dry the materials in the existing cylinder drying equipment, the temperature requirements of the cylinder body and hot air are relatively high, the drying speed of the material is slow, the drying time is long, and if the cylinder volume is large, it will be due to the use of The two drying modes of conduction and convection work together, and the control is more complicated
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Method used

As shown in Fig. 1 to Fig. 6, the present invention discloses a kind of through-flow type tobacco dryer, comprises cylinder body 2, feed end 1, discharge end 4 and the drying device that air-drying is carried out to tobacco, The feed end 1 is located on one side of the cylinder 2, and the discharge end 4 is located on the other side of the cylinder 2; the drying device is a central tube 5 that runs through the cylinder 2 and allows the drying gas to flow through it. The lower part of the central pipe 5 is evenly distributed with branch pipes 7 for discharging the drying gas, and the branch pipes 7 are close to the tobacco at the bottom of the cylinder body 2 for drying. The present invention can dry the blades, shredded leaves, tobacco stems and cut stems in the tobacco shredded production line. The drying gas is sprayed onto the tobacco at the bottom of the cylinder 2 through a plurality of branch pipes 7 at the bottom of the central pipe 5, so that the tobacco is violently The movement ensures sufficient contact between the drying gas and the tobacco, so that the drying speed is significantly accelerated and the drying time is significantly shortened.
As shown in Figure 1, a kind of through-flow type tobacco drier described in the present embodiment mainly consists of cylinder body 2, feed end 1, discharge end 4, center pipe 5, branch pipe 7, row Tide device 3, management and control system 12, driving device 11, heat exchanger 10, fan 9 and legs 8. Wherein, the cylinder body 2 is located between the feed end 1 and the discharge end 4 and is driven by the drive device 11 to rotate, and the central pipe 5 and the branch pipe 7 do not rotate with the cylinder body 2 . The rotation of the cylinder body 2 enables the tobacco material at the bottom of the cylinder body 2 to fully contact with the drying gas discharged from the branch pipe 7, so as to achieve the purpose of drying more fully.
As shown in Figure 4 to Figure 6, described branch pipe 7 is provided with drying gas spout near or the end that contacts tobacco material, and the aperture of described dry gas spout is not greater than the pipe diameter of branch pipe 7; The shape of the gas nozzle is duckbill or conical or cylindrical. The non-fixed ends of the branch pipes 7 are arranged in a duckbill shape, a conical shape or a cylindrical shape, which can ensure that the drying gas is sprayed in a designated direction, and can also increase the spraying speed of the dry gas.
In the present embodiment, central tube 5 runs through cylindrical body 2 inside, comprises first central tube 51, connecting tube 53 and second central tube 52, and the two ends of described connecting tube 53 are respectively connected with first central tube 51 It is connected with the second center pipe 52 through the flange 6 . Specifically, one end of the first central pipe 51 is fixed on the feed end 1 , and the other end of the first central pipe 51 is fixedly connected to one end of the connecting pipe 53 through the flange 6 . One end of the second central pipe 52 is fixedly installed on the discharge end 4 , and the other end of the second central pipe 52 is connected to the flange 6 at the other end of the connecting pipe 53 . Inserting the central tube 5 into the cylinder body 2 in sections not only reduces the processing difficulty, but also solves the problem that the central tube 5 is too long and difficult to be installed inside the cylinder body 2 .
In the present embodiment, the branch pipe 7 on the first center pipe 51 and the first center pipe 51 form an included angle of 70° to 90°; the branch pipe 7 on the second center pipe 52 and the second The central tube 52 forms an included angle of 70° to 90°. More preferably, the branch pipe 7 on the first central pipe 51 forms an angle of 87° with the first c...
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Abstract

The invention discloses an internal cross-flow type tobacco drying machine. The drying machine comprises a barrel, a feeding end, a discharging end and a drying device for air-drying tobacco, wherein the feeding end is located on one side of the barrel, and the discharging end is located on the other side of the barrel; the drying device is a central pipe which penetrates through the barrel and allows drying air flow to pass, branch pipes for discharging drying gas are evenly distributed at the lower part of the central pipe, and the branch pipes are close to tobacco at the bottom of the barrel to play a drying role. The drying machine can leaves, cut tobacco, tobacco stems and cut steams in a cut tobacco production line, the drying gas is sprayed on the tobacco at the bottom of the barrel from the multiple branch pipes at the lower part of the central pipe, so that the tobacco is moved violently, full contact between the drying gas and the tobacco is guaranteed, the drying speed is remarkably increased, and the drying time is remarkably shortened.

Application Domain

Tobacco preparationTobacco treatment

Technology Topic

Dry gasAir drying +3

Image

  • Internal cross-flow type tobacco drying machine
  • Internal cross-flow type tobacco drying machine
  • Internal cross-flow type tobacco drying machine

Examples

  • Experimental program(2)

Example Embodiment

[0033] Example 1
[0034] like figure 1 As shown, an internal flow tobacco dryer described in this embodiment includes a cylinder body 2, a feed end 1 and a discharge end 4, and the cylinder body 2 is rotatably arranged at the feed end 1 and the discharge end between 4. The tobacco material enters the cylinder 2 from the feed end 1, and flows out from the discharge end 4 after being dried. Inside the cylinder 2 is a central pipe 5 for drying the tobacco. The central pipe 5 runs through the cylinder 2 and its two ends are fixedly installed on the feeding end 1 and the discharging end 4 respectively. The discharge end 4 is provided with a drying gas inlet, and the drying gas enters the central pipe 5 through the drying gas inlet. The lower part of the central pipe 5 is evenly distributed with which the drying gas can be discharged and act on the tobacco material which is always at the bottom of the cylinder body 2 .
[0035] The control system 12 , the driving device 11 , the heat exchanger 10 , the fan 9 and the outriggers 8 supporting the cylinder 2 are distributed in the lower part of the cylinder 2 from left to right in sequence. The driving device 11 drives the cylinder 2 to rotate, and the central pipe 5 and the branch pipes 7 do not rotate with the cylinder 2 . In this embodiment, the cylinder body 2 is inclined towards the direction of the discharge end 4, and the inclination angle is 0°-10°, that is, the axis line of the cylinder body 2 forms an included angle of 0°-10° with the horizontal line. In this way, the tobacco material entering from the feed end 1 is facilitated to flow stably and continuously to the discharge end 4 .
[0036] In this embodiment, the branch pipe 7 and the central pipe 5 form an included angle of 70°˜90°, preferably, the branch pipe 7 and the central pipe 5 form an included angle of 87°. In this way, the drying gas discharged from the branch pipe 7 gives the tobacco material a force in the direction of the discharge end 4, so that the tobacco material flows more smoothly inside the cylinder 2, and ensures that the tobacco material flows to the discharge end 4 at a stable speed. . Preferably, the end of the branch pipe 7 close to or in contact with the tobacco is tapered or duckbill. Setting the non-fixed end of the branch pipe 7 into a duckbill shape or a conical shape can ensure that the drying gas is sprayed in a designated direction, and can also increase the spraying speed of the drying gas.
[0037]Specifically, when the tobacco material needs to be dried, the dryer is started, the cylinder 2 starts to rotate, and the central pipe 5 and the branch pipes 7 do not rotate with the cylinder 2 . The management and control system 12 controls the fan 9 and the heat exchanger 10 to work, and exchanges heat with the air to obtain dry gas (eg, hot air or superheated steam). The blower 9 transports the drying gas to the discharge end 4 , and the drying gas enters the central pipe 5 from the drying gas inlet of the discharge end 4 . When the temperature in the central pipe 5 reaches the preset temperature, the control system 12 controls the tobacco material to enter the inside of the cylinder 2 from the feeding end 1. The tobacco material is always at the bottom of the cylinder 2 due to its own gravity, and because the cylinder 2 rotates , the tobacco material is tumbling and stirring as the cylinder 2 rotates. A part of the drying gas is discharged through the branch pipe 7 near the discharge end 4 , and the remaining drying gas continues to flow toward the feed end 1 . The drying gas flow is opposite to the flow direction of the tobacco material, and the drying gas velocity discharged from the branch pipe 7 near the feed end 1 is the highest. The drying gas discharged from the branch pipe 7 is in full contact with the tobacco material at the bottom of the cylinder body 2. During the drying process of the tobacco material, a series of chemical reactions occur. As the drying time increases, the moisture in the tobacco material is gradually evaporated. The outgoing moisture with miscellaneous gas is discharged from the cylinder 2 through the moisture exhaust device 3 . In this way, after the tobacco material at the bottom of the cylinder body 2 is dried, it is discharged from the discharge end 4 to achieve the purpose of sufficient drying.
[0038] The drying gas in the central pipe 5 of the present invention is sprayed onto the tobacco material at the bottom of the cylinder body 2 through a plurality of branch pipes 7 at the lower part of the central pipe 5, so that the tobacco material is strongly moved, and the complete contact between the drying gas and the material is ensured. To achieve the purpose of reducing processing intensity, increasing drying speed and shortening working time.

Example Embodiment

[0039] Embodiment 2
[0040] like figure 1 As shown in the figure, an internal flow tobacco dryer described in this embodiment is mainly composed of a cylinder body 2, a feeding end 1, a discharging end 4, a central pipe 5, a branch pipe 7, a moisture removal device 3, and a management and control system. 12. The drive device 11, the heat exchanger 10, the fan 9 and the supporting legs 8 are composed. Wherein, the cylinder 2 is located between the feeding end 1 and the discharging end 4 and rotates under the driving of the driving device 11 , and the central pipe 5 and the branch pipes 7 do not rotate with the cylinder 2 . The rotation of the cylinder body 2 enables the tobacco material at the bottom of the cylinder body 2 to fully contact the drying gas discharged from the branch pipe 7, thereby achieving the purpose of more adequate drying.
[0041] In this embodiment, the central pipe 5 runs through the interior of the cylinder body 2 and includes a first central pipe 51 , a connecting pipe 53 and a second central pipe 52 . The two ends of the connecting pipe 53 are connected to the first central pipe 51 and the second central pipe 51 The central pipe 52 is connected by the flange 6 . Specifically, one end of the first central pipe 51 is fixed on the feed end 1 , and the other end of the first central pipe 51 is fixedly connected to one end of the connecting pipe 53 through the flange 6 . One end of the second central pipe 52 is fixedly mounted on the discharge end 4 , and the other end of the second central pipe 52 is connected to the other end flange 6 of the connecting pipe 53 . Connecting the central pipe 5 into the interior of the cylinder body 2 in sections can not only reduce the difficulty of processing, but also solve the problem that the central pipe 5 is too long and difficult to install into the interior of the cylinder body 2 .
[0042] like figure 2 and image 3 As shown, at least one row of branch pipes 7 is evenly distributed along the respective length directions of the lower parts of the first central pipe 51 and the second central pipe 52 . The drying gas in the first central pipe 51 and the second central pipe 52 is discharged through the branch pipe 7 and acts on the tobacco material at the bottom of the cylinder body 2, so that the tobacco material is dried. In this embodiment, the non-fixed end of the branch pipe 7 is close to the tobacco material at the bottom of the cylinder 2, so that since the drying gas discharged from the branch pipe 7 has a certain distance from the tobacco material, the drying gas can be blown on the tobacco material, Allow the tobacco material to dry sufficiently. Preferably, the non-fixed end of the branch pipe 7 contacts the tobacco material at the bottom of the cylinder 2, that is, the end of the non-fixed end of the branch pipe 7 protrudes into the tobacco material and is in strong contact with the tobacco material, and the drying effect is more obvious.
[0043] In this embodiment, the branch pipes 7 on the first central pipe 51 and the first central pipe 51 form an included angle of 70° to 90°; the branch pipes 7 on the second central pipe 52 and the second central pipe 52 Form an included angle of 70° to 90°. More preferably, the branch pipe 7 on the first central pipe 51 and the first central pipe 51 form an included angle of 87°, and the branch pipe 7 on the second central pipe 52 and the second central pipe 52 form an 87° clamp. horn. In this way, the branch pipe 7 can provide the tobacco material with a force in the direction of the discharge end 4 , thereby facilitating the smoother flow of the tobacco in the cylinder body 2 .
[0044] like Figure 4 to Figure 6 As shown, the end of the branch pipe 7 close to or contacting the tobacco material is provided with a drying gas nozzle, and the diameter of the drying gas nozzle is not larger than the pipe diameter of the branch pipe 7; the shape of the drying gas nozzle is a duckbill or Conical or cylindrical. Setting the non-fixed end of the branch pipe 7 into a duckbill shape, a conical shape or a cylindrical shape can ensure that the drying gas is sprayed in a designated direction, and can also increase the spraying speed of the drying gas.
[0045] In this embodiment, the cylinder body 2 is inclined in the direction of the discharge end 4, and the axis line of the cylinder body 2 forms an included angle between 0° and 10° with the horizontal line. The inclined setting of the cylinder body 2 is conducive to the movement of the tobacco to the discharge end 4; the tobacco is always at the bottom of the cylinder body 2 in the process of moving from the feed end 1 to the discharge end 4, thereby forming a stable material layer and reducing the amount of material. Fly Yang. The moisture removal device 3 is arranged in the middle of the cylinder body 2, and is used to discharge the dried moist gas out of the cylinder body 2, so as to better improve the whole drying process.
[0046] In the present embodiment, the working engineering of the tobacco dryer is as follows:
[0047] When the tobacco material needs to be dried, the dryer is started, the cylinder 2 starts to rotate, and the central pipe 5 and the branch pipes 7 do not rotate with the cylinder 2 . The management and control system 12 controls the fan 9 and the heat exchanger 10 to work, and exchanges heat with the air to obtain dry gas (eg, hot air or superheated steam). The blower 9 transports the drying gas to the discharge end 4 , and the drying gas enters the central pipe 5 from the drying gas inlet of the discharge end 4 . When the temperature in the central pipe 5 reaches the preset temperature, the control system 12 controls the tobacco material to enter the inside of the cylinder 2 from the feeding end 1. The tobacco material is always at the bottom of the cylinder 2 due to its own gravity, and because the cylinder 2 rotates , the tobacco material is tumbling and stirring as the cylinder 2 rotates. A part of the drying gas is discharged through the branch pipe 7 near the discharge end 4 , and the remaining drying gas continues to flow toward the feed end 1 . The drying gas flow is opposite to the flow direction of the tobacco material, and the drying gas velocity discharged from the branch pipe 7 near the feed end 1 is the highest. The drying gas discharged from the branch pipe 7 is in full contact with the tobacco material at the bottom of the cylinder body 2. During the drying process of the tobacco material, a series of chemical reactions occur. As the drying time increases, the moisture in the tobacco material is gradually evaporated. The outgoing moisture with miscellaneous gas is discharged from the cylinder 2 through the moisture exhaust device 3 . In this way, after the tobacco material at the bottom of the cylinder body 2 is dried, it is discharged from the discharge end 4 to achieve the purpose of sufficient drying.
[0048] Compared with the traditional drum dryer, the invention dries the leaves, cut leaves, tobacco stems and cut stems in the tobacco silk production line. Compared with the traditional drum dryer, the processing strength is reduced, the drying speed is fast, the drying time is short, and the shredding is low, and the production capacity is the same. The volume of the lower equipment is greatly reduced, the filling value of the cut tobacco is improved, and the moisture content and moisture accuracy required by the process indicators are achieved.

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Description & Claims & Application Information

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