Tobacco stem moisture regaining and conveying device

Abstract

The invention provides a tobacco stem moisture regaining and conveying device. The tobacco stem moisture regaining and conveying device comprises a shell, the shell is provided with a first side and a second side in the conveying direction, the first side is provided with a feeding port allowing tobacco stems to enter, and the second side is provided with a discharging port allowing the tobacco stems to be discharged; the steam injection pipe is arranged in the shell, extends from the first side to the second side and penetrates through the shell, and a material conveying cavity is formed between the outer wall face, located in the shell, of the steam injection pipe and the inner wall face of the shell; and a plurality of steam spraying holes are formed in the pipe wall of the steam spraying pipe in a penetrating mode, and the multiple steam spraying holes are distributed at intervals from the first side to the second side and used for spraying steam in the steam spraying pipe into the material conveying cavity. In the tobacco stem conveying process, sufficient moisture regaining treatment on tobacco stems is facilitated, the moisture regaining uniformity of the tobacco stems is improved, and the moisture regaining effect of the tobacco stems is improved to the maximum extent.

Description

Technical Field

[0001] This application relates to the technical field of tobacco processing, and particularly to a tobacco stem moisture regain conveying device. Background Art

[0002] During the processing of tobacco stem cut tobacco, the pretreatment of tobacco stems is an important process step. It mainly relies on steam and water to increase the temperature and humidity of tobacco stems. Through moisture regain treatment, the moisture and temperature of tobacco stems can be effectively increased, their flexibility and processability can be enhanced, and it is convenient for subsequent processing.

[0003] Traditional moisture regain treatment generally uses steam and atomized water to contact tobacco stems to increase the moisture and temperature of tobacco stems and improve the moistening effect of tobacco stems. However, in the process of moisture regain of tobacco stems by traditional methods, the moisture regain effect of tobacco stems is poor. Summary of the Invention

[0004] The embodiment of this application provides a tobacco stem moisture regain conveying device, which helps to fully perform moisture regain treatment on tobacco stems during the conveying process, is beneficial to improving the uniformity of moisture regain of tobacco stems, and maximally improves the moisture regain effect of tobacco stems.

[0005] The embodiment of this application provides a tobacco stem moisture regain conveying device for conveying tobacco stems. The tobacco stem moisture regain conveying device includes:

[0006] A housing having a first side and a second side along the conveying direction. The first side is provided with a feed inlet for the tobacco stems to enter, and the second side is provided with a discharge outlet for the tobacco stems to be discharged;

[0007] A steam injection pipe disposed in the housing, extending from the first side to the second side and penetrating the housing. A material conveying cavity is formed between the outer wall surface of the steam injection pipe in the housing and the inner wall surface of the housing;

[0008] Wherein, a plurality of steam spray holes are formed through the pipe wall of the steam injection pipe. The plurality of steam spray holes are arranged at intervals from the first side to the second side and are used to spray the steam in the steam injection pipe into the material conveying cavity.

[0009] In one embodiment, in the direction from the first side to the second side, the distribution of the steam spray holes gradually changes from sparse to dense.

[0010] In one embodiment, in the direction perpendicular to the conveying direction, the aperture of the steam spray holes gradually increases from the inside of the steam injection pipe to the material conveying cavity.

[0011] In one embodiment, it further includes a plurality of stirring paddles, and the plurality of stirring paddles are arranged at intervals along the first side to the second side on the outer periphery of the steam injection pipe;

[0012] The stirring end of the stirring paddle is located in the material conveying cavity and is configured to stir the tobacco stems in the material conveying cavity.

[0013] In one embodiment, it further includes a driving member, and the steam injection pipe is connected to the driving shaft of the driving member;

[0014] The driving member is configured to drive the steam injection pipe to rotate, so as to drive the stirring paddle to rotate in the material conveying cavity.

[0015] In one embodiment, the driving member is located on the first side of the housing, and the steam injection pipe has a first end and a second end along the conveying direction;

[0016] The first end of the steam injection pipe penetrates through the first side of the housing and is connected to the driving shaft of the driving member, and the second end of the steam injection pipe penetrates through the second side of the housing and is used to be connected to a steam supply device.

[0017] In one embodiment, it further includes a connecting pipe and a rotary joint. One end of the connecting pipe is connected to the steam supply device, and the other end of the connecting pipe is connected to the second end of the steam injection pipe through the rotary joint.

[0018] In one embodiment, the housing includes a transmission section and two cover plates. The transmission section has openings on both sides along the transmission direction, and the cover plates are respectively covered on the openings;

[0019] The steam injection pipe extends from the first side to the second side and penetrates through the two cover plates.

[0020] In one embodiment, it further includes a support frame, and the housing is arranged on the support frame;

[0021] And / or, the tobacco stem conditioning and conveying device further includes a door cover. A disassembly opening is provided on the housing, and the door cover is detachably connected to the disassembly opening.

[0022] In one embodiment, the steam spray holes include conical holes; and / or, the steam injection pipe includes a hollow spiral shaft.

[0023] The tobacco stem moisture regain conveying device provided by the embodiment of the present application includes a steam injection pipe, so that during the conveying of tobacco stems in the material conveying cavity, the tobacco stems can fully contact the steam ejected from the steam injection pipe, extending the moisture regain time of the tobacco stems. By providing a plurality of steam spray holes arranged at intervals from the first side to the second side, the moisture regain effect is further optimized, enabling the steam to be more widely and evenly distributed in the material conveying cavity, avoiding the concentration of steam in a certain area. Moreover, the contact time between the steam and the tobacco stems is extended, maximizing the moisture regain effect of the tobacco stems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments or exemplary embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the tobacco stem moisture regain conveying device provided by the embodiment of the present application;

[0026] Figure 2 It is a schematic structural diagram of the housing and the steam injection pipe provided by the embodiment of the present application;

[0027] Figure 3 It is a schematic structural diagram of the steam spray hole provided by the embodiment of the present application.

[0028] Reference numerals:

[0029] 100, housing; 110, first side; 120, second side; 130, feed inlet; 140, discharge outlet; 150, material conveying cavity; 160, transmission section; 170, cover plate;

[0030] 200, steam injection pipe; 210, steam spray hole; 220, first end; 230, second end;

[0031] 300, stirring paddle;

[0032] 400, driving member;

[0033] 500, connecting pipe;

[0034] 600, rotary joint;

[0035] 700, support frame;

[0036] 800, door cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0039] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0040] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to "connect" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the present application are only for the purpose of illustration and do not represent the only implementation.

[0041] Traditional stem conditioning equipment uses steam and atomized water to contact the tobacco stems, which serves to increase the moisture and temperature of the tobacco stems and improve the penetration effect of the tobacco stems. However, the stem conditioning time of the existing stem conditioning equipment is insufficient, and the contact time between the tobacco stems and the steam is short, resulting in a large difference in the penetration effect of the tobacco stems and being prone to stem crushing damage in subsequent processes, and the stem rewetting effect is relatively poor.

[0042] To solve the above problems, an embodiment of the present application provides a tobacco stem moistening and conveying device. By including a steam injection pipe, during the conveying of tobacco stems in the material conveying cavity, the tobacco stems can fully contact the steam ejected from the steam injection pipe, extending the moistening time of the tobacco stems. By opening a plurality of steam spray holes, the plurality of steam spray holes are arranged at intervals from the first side to the second side, further optimizing the moistening effect, enabling the steam to be more widely and evenly distributed in the material conveying cavity, avoiding the situation where steam is concentrated in a certain area, and moreover, extending the contact time between the steam and the tobacco stems, maximizing the moistening effect of the tobacco stems.

[0043] The following will combine Figures 1 to 3 to describe the specific structure of the tobacco stem moistening and conveying device provided by the embodiment of the present application.

[0044] Referring to Figure 1 As shown, an embodiment of the present application provides a tobacco stem moistening and conveying device, including a housing 100. The housing 100 has a first side 110 and a second side 120 along the conveying direction. An inlet 130 for tobacco stems to enter is provided on the first side 110, and an outlet 140 for discharging tobacco stems is provided on the second side 120.

[0045] Among them, the inlet 130 can be conveniently docked with the feeding equipment of tobacco stems (such as conveyor belts, hoppers, etc.), enabling the tobacco stems to smoothly enter the moistening device, and the outlet 140 can be connected to subsequent processing equipment (such as tobacco stem processors, packaging equipment, etc.) to realize the transfer of tobacco stems from moistening and conveying to other processing steps, improving the integration and production efficiency of the entire system.

[0046] Among them, the settings of the inlet 130 and the outlet 140 clarify the flow direction of the tobacco stems in the device, enabling the tobacco stems to enter and discharge according to a predetermined path, ensuring the orderliness and continuity of the tobacco stem conveying process.

[0047] In order to synchronously moisten the tobacco stems during the conveying process of the tobacco stems, in this embodiment, referring to Figure 1 and Figure 2 As shown, a steam injection pipe 200 is further provided in the housing 100, and it extends from the first side 110 to the second side 120 and penetrates the housing 100. A material conveying cavity 150 is formed between the inner wall surface of the housing 100 and the outer wall surface of the steam injection pipe 200 located in the housing 100.

[0048] Among them, by arranging the steam injection pipe 200 in the housing 100 and using the space between the steam injection pipe 200 and the inner wall surface of the housing 100 as the material conveying cavity 150, the function integration of the device is cleverly realized. Without occupying too much additional space, the two functions of moistening and conveying are achieved, making the device structure more compact and the space utilization more reasonable.

[0049] Meanwhile, since the steam injection pipe 200 penetrates the entire housing 100, the tobacco stems can be affected by the steam throughout the entire conveying path, avoiding the situation of insufficient moisture regain in some stages during the conveying process, ensuring the continuity and uniformity of the moisture regain treatment, keeping the humidity of the tobacco stems consistent, and meeting the requirements of subsequent processing.

[0050] Exemplarily, the steam injection pipe 200 can be a hollow spiral shaft. Among them, the spiral structure of the spiral shaft enables it to generate an axial thrust on the tobacco stems during rotation, thereby realizing the continuous conveying of the tobacco stems in the material conveying cavity 150. Compared with the traditional conveying method, the spiral shaft can push the tobacco stems forward more evenly and stably, reduce the accumulation and blockage of the tobacco stems during the conveying process, improve the conveying efficiency of the tobacco stems, and ensure the continuity and smoothness of the moisture regain conveying process.

[0051] To further improve the moisture regain effect on the tobacco stems, in this embodiment, referring to Figures 1 to 3 As shown, a plurality of steam spray holes 210 are formed through the wall of the steam injection pipe 200, and the plurality of steam spray holes 210 are arranged at intervals from the first side 110 to the second side 120 and are used to spray the steam in the steam injection pipe 200 into the material conveying cavity 150.

[0052] It can be understood that penetration means that the steam spray openings penetrate the wall thickness of the steam injection pipe 200. Among them, the number, shape, and arrangement method of the steam spray holes 210 are not limited and can be specifically set according to actual needs.

[0053] Among them, the steam spray holes 210 are channels connecting the inside of the steam injection pipe 200 and the material conveying cavity 150. The plurality of steam spray holes 210 arranged at intervals can evenly disperse the steam to various positions in the material conveying cavity 150. When the tobacco stems are conveyed in the material conveying cavity 150, no matter which position they are in, they have the opportunity to contact the steam, thereby avoiding the problems of excessive or insufficient moisture regain of local tobacco stems, improving the uniformity of the tobacco stem moisture regain, and ensuring the stability of the overall quality of the tobacco stems.

[0054] In addition, by adjusting the size, number, and spacing distance of the steam spray holes 210, according to the characteristics of different tobacco stems and the requirements of the processing technology, the spraying amount and spraying range of the steam can be flexibly controlled, thereby precisely controlling the moisture regain degree of the tobacco stems and meeting the diverse production requirements; at the same time, the existence of the steam spray holes 210 plays a certain buffering and dispersing role, enabling the steam pressure in the steam injection pipe 200 to be more stably released into the material conveying cavity 150, which is beneficial to avoiding the situation of excessive local pressure or uneven steam distribution that may be caused by concentrated steam spraying.

[0055] In some embodiments, referring to Figure 3 As shown, along the first side 110 to the second side 120, the distribution of the steam spray holes 210 gradually changes from sparse to dense.

[0056] It should be noted that the change from sparse to dense means that on the steam injection pipe 200, in the direction from the first side 110 (near the feed port 130) of the housing 100 to the second side 120 (near the discharge port 140), the distribution of the steam injection holes 210 shows a regular change, that is, the distribution density changes from sparse to dense.

[0057] Exemplarily, at one end near the feed port 130, the number of steam injection holes 210 per unit length is relatively small; while as it extends towards the discharge port 140, the number of steam injection holes 210 per unit length gradually increases. Or, at one end near the feed port 130, the spacing between adjacent steam injection holes 210 is large, and at one end near the discharge port 140, the spacing between adjacent steam injection holes 210 is small.

[0058] With such a design, on the one hand, when the tobacco stems first enter the conveying chamber 150 from the feed port 130, their initial moisture content is relatively low and their ability to absorb steam is strong. At this time, the steam injection holes 210 are sparsely distributed. An appropriate amount of steam injection can not only meet the needs of the initial moisture regain of the tobacco stems, but also avoid the problem of excessive local humidity of the tobacco stems caused by too much steam. As the tobacco stems are conveyed towards the discharge port 140, the moisture content of the tobacco stems gradually increases and their ability to absorb steam relatively weakens. And at this time, the steam injection holes 210 are densely distributed, increasing the steam injection amount to ensure that the tobacco stems can continuously absorb enough steam to achieve an ideal moisture regain effect, realizing the dynamic adjustment of steam supply according to the requirements of different stages in the moisture regain process of the tobacco stems.

[0059] On the other hand, this distribution method of the steam injection holes 210 from sparse to dense makes the steam amounts received by each part of the tobacco stems more reasonably matched during the entire conveying and moisture regain process. It avoids the situation that the tobacco stems are overly moisture regained due to too much steam at the front end of the conveying, or insufficiently moisture regained due to insufficient steam at the rear end of the conveying, thereby effectively improving the uniformity of the moisture regain of the tobacco stems, enhancing the overall quality of the tobacco stems, and reducing the quality differences of the tobacco stems caused by uneven moisture regain.

[0060] In some embodiments, as shown in Figure 3 the aperture of the steam injection holes 210 gradually increases from the inside of the steam injection pipe 200 to the conveying chamber 150 along the direction perpendicular to the conveying direction.

[0061] Exemplarily, the conveying direction can be as shown in the A direction in Figures 1 to 3 and the direction perpendicular to the conveying direction can be as shown in the B direction in Figures 1 to 3 .

[0062] Among them, the aperture of the steam injection holes 210 gradually increases from the inside of the steam injection pipe 200 to the material conveying cavity 150. For example, the steam injection holes 210 exhibit a flared or tapered shape, which means that when the steam is inside the steam injection pipe 200, it passes through a smaller aperture, and when it sprays into the material conveying cavity 150, the aperture it passes through gradually increases. Such a design is mainly to optimize the process of steam spraying from the inside of the steam injection pipe 200 into the material conveying cavity 150, so as to better achieve the moisture regain treatment of the tobacco stems.

[0063] With this design, on the one hand, since the aperture near the material conveying cavity 150 is larger, it effectively prevents the tobacco stems from entering the steam injection pipe 200 through the steam injection holes 210, thus effectively avoiding clogging of the steam injection holes 210 and facilitating the cleaning of the steam injection holes 210. On the other hand, the design of a smaller inner pipe aperture and a gradually increasing outlet aperture forms a unidirectional steam flow trend, reducing the possible backflow phenomenon of the steam during the spraying process. If the aperture of the steam injection holes 210 is uniform or the outlet aperture is small, it may cause some steam to be blocked during spraying and flow back into the steam injection pipe 200, affecting the normal spraying of the steam and the moisture regain effect. The flared spray holes effectively avoid this situation, ensuring that the steam can continuously and stably spray into the material conveying cavity 150 and maintaining a good moisture regain working state.

[0064] In some embodiments, as shown in Figure 1 and Figure 2 , it may further include a plurality of stirring paddles 300, and the plurality of stirring paddles 300 are arranged at intervals on the outer periphery of the steam injection pipe 200; the stirring ends of the stirring paddles 300 are located in the material conveying cavity 150 and are configured to stir the tobacco stems in the material conveying cavity 150.

[0065] Among them, the number and arrangement mode of the stirring paddles 300 are not limited. Exemplarily, the plurality of stirring paddles 300 can be arranged at intervals along the first side 110 to the second side 120.

[0066] Exemplarily, the stirring paddle can be a spiral blade. Among them, the connection mode between the stirring paddle 300 and the steam injection pipe 200 is not limited. Exemplarily, the stirring paddle 300 and the steam injection pipe 200 can be connected by welding or bolt connection, or can also be connected by a clamp. This embodiment does not make a limitation on this.

[0067] In this way, the stirring action of the stirring paddle 300 not only makes the tobacco stems contact the steam more fully, but also accelerates the penetration of moisture on the surface of the tobacco stems and the uniform distribution of moisture inside. Through stirring, the gaps between the tobacco stems are adjusted, and the steam can more easily enter the inside of the tobacco stems, accelerating the absorption speed of moisture in the steam by the tobacco stems, thus shortening the time required for the moisture regain of the tobacco stems and improving the working efficiency of the entire moisture regain conveying device.

[0068] Meanwhile, while stirring the tobacco stems, it also plays a certain role in promoting the transportation of the tobacco stems. It can keep the tobacco stems in a relatively stable flow state within the material conveying cavity 150, avoiding disordered movement or stagnation of the tobacco stems.

[0069] In some embodiments, referring to Figure 1 As shown, it may further include a driving member 400, and the steam injection pipe 200 is connected to the driving shaft of the driving member 400; the driving member 400 is configured to drive the steam injection pipe 200 to rotate, so as to drive the stirring paddle 300 to rotate within the material conveying cavity 150.

[0070] Exemplarily, the driving member 400 may be a motor. As a common power device, the motor can convert electrical energy into mechanical energy, providing a stable and continuous power source for the rotation of the steam injection pipe 200.

[0071] Among them, the driving member 400 provides a stable power source for the steam injection pipe 200 and the stirring paddle 300, enabling the stirring and transportation processes of the tobacco stems to be automatically carried out without manual intervention. This automated operation method greatly improves production efficiency, reduces labor costs, and at the same time ensures the stability and consistency of the stirring and transportation processes, avoiding the problem of inconsistent treatment effects of the tobacco stems caused by differences in manual operations.

[0072] In some embodiments, referring to Figure 1 As shown, the steam injection pipe 200 has a first end 220 and a second end 230 along the conveying direction; among them, the first end 220 penetrates through the first side 110 of the housing 100 and is connected to the driving shaft of the driving member 400, and the second end 230 penetrates through the second side 120 of the housing 100 and is used to be connected to the steam supply device.

[0073] Among them, the function of the steam supply device is to provide steam for the steam injection pipe 200 to achieve the moisture regain treatment of the tobacco stems. Exemplarily, the steam supply device may be a steam boiler, and this embodiment does not make any limitations in this regard.

[0074] Such a connection method can ensure that steam continuously enters the interior of the steam injection pipe 200. And since the steam injection pipe 200 penetrates the entire housing 100, when the steam flows in the pipe, it can be more evenly sprayed into the material conveying cavity 150 through the steam spray holes 210 on the pipe wall, enabling the tobacco stems to receive uniform steam injection throughout the transportation process, thereby improving the uniformity and effect of the tobacco stem moisture regain.

[0075] In some embodiments, referring to Figure 1 As shown, it may further include a connecting pipe 500 and a rotary joint 600. One end of the connecting pipe 500 is connected to the steam supply device, and the other end of the connecting pipe 500 is connected to the second end 230 of the steam injection pipe 200 through the rotary joint 600.

[0076] Among them, the rotary joint 600 is a special connecting component that allows the smooth transmission of steam between the connecting pipe 500 and the steam injection pipe 200 even when they rotate relative to each other.

[0077] In this embodiment, the setting of the rotary joint 600 and the connecting pipe 500 enables the steam supply device to continuously and stably supply steam to the steam injection pipe 200 without affecting the rotation of the steam injection pipe 200 under the action of the driving member 400. Even during the long-term and high-frequency rotation of the steam injection pipe 200, the normal transmission of steam can be ensured, avoiding problems such as steam leakage or supply interruption caused by improper connection methods. This ensures the continuity and stability of the tobacco stem rewetting process, improves the rewetting quality, and guarantees the production efficiency of tobacco stem processing.

[0078] In some embodiments, referring to Figure 2 As shown, the housing 100 includes a transmission section 160 and two cover plates 170. The transmission section 160 has openings on both sides along the transmission direction, and the cover plates 170 are respectively covered on the openings; the steam injection pipe 200 penetrates through the two cover plates 170.

[0079] Exemplarily, the housing 100 is designed as a combination of the transmission section 160 and the cover plates 170. This modular design method improves the production efficiency of the equipment, reduces the production cost, and also facilitates the replacement and upgrade of the equipment. When a certain component is damaged or needs to be improved, the corresponding module can be replaced separately without large-scale modification of the entire equipment.

[0080] Among them, the two cover plates 170 are covered on the openings of the transmission section 160, effectively enclosing the internal space of the transmission section 160 to form a relatively airtight material conveying cavity 150. Such an airtight space is conducive to the uniform distribution of steam in the material conveying cavity 150 and maintaining a certain steam pressure, improving the rewetting effect of steam on tobacco stems. At the same time, it avoids steam leakage, reduces energy waste, and ensures the safety and economy of the device operation.

[0081] In some embodiments, referring to Figure 1 As shown, it may further include a support frame 700, and the housing 100 is arranged on the support frame 700. Among them, the support frame 700 provides a supporting force to ensure the stability and height position of the housing 100 during the operation of the device, enabling the entire device to work properly; in addition, by designing support frames 700 with different heights, the housing 100 can be adjusted to a suitable working height, facilitating operations such as feeding, discharging, operating, and monitoring the device by operators, improving the operation convenience and comfort, and reducing the labor intensity of operators.

[0082] In this embodiment, referring to Figure 1 andFigure 2 As shown, the tobacco stem conditioning and conveying device may further include a door cover 800. A disassembly opening is provided on the housing 100, and the door cover 800 is detachably connected to the disassembly opening. Exemplarily, when the device needs to be maintained or overhauled, removing the door cover 800 can directly access each component inside the housing 100, such as the steam injection pipe 200, the stirring paddle 300, etc., facilitating the inspection of the operating conditions of the components; when the device is operating normally, the door cover 800 closes the disassembly opening, which can prevent external dust, debris, etc. from entering the inside of the housing 100 and avoid the contamination of tobacco stems by these impurities.

[0083] This embodiment provides a tobacco stem conditioning and conveying device. By including a steam injection pipe, during the conveying process of tobacco stems in the material conveying cavity, the tobacco stems can fully contact the steam ejected from the steam injection pipe, extending the conditioning time of the tobacco stems; by providing a plurality of steam spray holes, the plurality of steam spray holes are arranged at intervals along the first side to the second side, further optimizing the conditioning effect, enabling the steam to be more widely and evenly distributed in the material conveying cavity, avoiding the situation where steam is concentrated in a certain area, and moreover, extending the contact time between the steam and the tobacco stems, maximizing the conditioning effect of the tobacco stems.

[0084] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0085] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A tobacco stem rehumidification and conveying device, characterized in that: include: A housing, the housing having a first side and a second side along a conveying direction, the first side being provided with a feed inlet for tobacco stems to enter, and the second side being provided with a discharge outlet for tobacco stems to discharge; A steam injection pipe is disposed in the shell and extends from the first side to the second side and penetrates the shell, and a material delivery cavity is formed between the inner wall surface of the shell and the outer wall surface of the steam injection pipe located in the shell; A plurality of steam spray holes are formed through the wall of the steam spray pipe, and the plurality of steam spray holes are arranged at intervals from the first side to the second side and are used to spray the steam in the steam spray pipe into the feed cavity.

2. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: From the first side to the second side, the distribution of the steam spray holes gradually changes from sparse to dense.

3. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: Along a direction perpendicular to the conveying direction, the diameter of the steam spray hole gradually increases from the inside of the steam spray pipe to the material conveying cavity.

4. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: It also includes a plurality of stirring paddles, wherein the plurality of stirring paddles are arranged at intervals on the outer periphery of the steam injection pipe; The stirring end of the stirring paddle is located in the material delivery cavity and is configured to stir the tobacco stems in the material delivery cavity.

5. The tobacco stem rehumidification and conveying device according to claim 4, characterized in that: It also includes a driving member, wherein the steam injection pipe is connected to a driving shaft of the driving member; The driving member is configured to drive the steam injection pipe to rotate, so as to drive the stirring paddle to rotate in the material delivery cavity.

6. The tobacco stem rehumidification and conveying device according to claim 5, characterized in that: The steam injection pipe has a first end and a second end along the conveying direction; The first end passes through the first side of the shell and is connected to the driving shaft of the driving member, and the second end passes through the second side of the shell and is used to be connected to the steam supply device.

7. The tobacco stem rehumidification and conveying device according to claim 6, characterized in that: It also includes a connecting pipe and a rotating joint, one end of the connecting pipe is connected to the steam supply device, and the other end of the connecting pipe is connected to the second end of the steam injection pipe through the rotating joint.

8. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: The housing comprises a transmission section and two cover plates, the transmission section has openings on both sides along the conveying direction, and the cover plates cover the openings respectively; The steam injection pipe passes through the two cover plates.

9. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: It also includes a support frame, and the shell is arranged on the support frame; And / or, the tobacco stem rehumidification and conveying device further comprises a door cover, a disassembly opening is provided on the shell, and the door cover is detachably connected to the disassembly opening.

10. The tobacco stem rehumidification and conveying device according to claim 1, characterized in that: The steam injection hole comprises a tapered hole; and / or the steam injection pipe comprises a hollow spiral shaft.

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