Drying and forming equipment for tobacco pulp sheets

Abstract

The utility model discloses a tobacco pulp sheet drying and forming device which is provided with a conveying belt and a forming mechanism which is located at the feeding end of the conveying belt and used for smearing tobacco pulp sheets on the upper surface of the conveying belt, and a steam heating assembly used for heating the conveying belt is arranged below the conveying belt. According to the utility model, the steam heating assembly is arranged on the lower surface of the conveying belt, the conveying belt is heated by the steam heating assembly, and heat is conducted to the tobacco pulp sheets by the conveying belt, so that moisture contained in the tobacco pulp sheets quickly reaches an evaporation temperature, the heat of the steam is utilized, and the moisture in the steam is prevented from being in contact with the tobacco pulp sheets; the drying speed of the tobacco pulp sheets is increased, and it is ensured that the tobacco pulp sheets can be evenly dried.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco processing, and in particular relates to a drying and forming device for tobacco pulp slices. Background Art

[0002] In the prior art, tobacco flakes are often used as raw materials for tobacco products instead of natural tobacco leaves. Tobacco flakes can be made from tobacco powder, water, glue and other substances. After being mixed into tobacco pulp, they are applied to the steel belt of the drying and molding equipment through a molding device. Then, the drying and molding equipment transports the tobacco pulp flakes to a high-temperature, ventilated chamber through a steel belt to dry and mold the tobacco pulp flakes. Finally, the dried tobacco pulp flakes are peeled off from the steel belt by a peeling device at the discharge end of the drying and molding equipment to form tobacco flake products.

[0003] The Chinese utility model patent application number 200520096942.0 discloses a tobacco sheet drying device. The device is connected by an active roller, a driven roller, a drag chain net of the drag part, a tunnel-type structured fuselage, and a heating component. The heating component consists of a far-infrared heating zone located at the front section of the fuselage and a steam heating zone at the rear section of the fuselage. In the far-infrared heating zone, several far-infrared electric radiation plates are fixed above the drag chain net. The sealing cover, the furnace cavity partition and the sealing plates on both sides of the fuselage form a hot air circulation channel. The patent improves the quality of the finished sheet and reduces energy consumption.

[0004] However, this patent mixes the far-infrared heating zone and the steam heating zone in the same circulation channel, resulting in a high moisture content of the gas in the circulation channel. The moisture in the tobacco pulp slices cannot be quickly dissipated, and the lower surface of the slices always dries slower than the upper surface. After being sent out by the drying device, the lower surface of the tobacco pulp slices is still wet, and the quality after drying is poor.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The utility model aims to provide a tobacco pulp slice drying and forming device, so as to achieve the purpose of quickly drying the tobacco pulp slice and ensuring that the upper and lower surfaces of the tobacco pulp slice are dried uniformly.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A tobacco pulp flake drying and forming device is provided with a conveyor belt and a forming mechanism located at the feeding end of the conveyor belt and used for applying tobacco pulp flakes to the upper surface of the conveyor belt. A steam heating component for heating the conveyor belt is provided below the conveyor belt.

[0009] Furthermore, the steam heating component comprises a trough body with an open top, and the conveyor belt covers the open top of the trough body to form a closed cavity;

[0010] The tank body is provided with a steam conduit and an exhaust pipe communicating with the inside and outside of the cavity. Steam can enter the cavity from the steam conduit to heat the conveyor belt and then be discharged from the exhaust pipe.

[0011] Furthermore, the steam heating component includes a steam injection rod arranged in the trough body, and a plurality of injection holes arranged along the length direction of the steam injection rod are opened on the side wall of the steam injection rod. The steam injection rod is arranged below the conveyor belt with the injection holes opposite to the conveyor belt and horizontally spaced.

[0012] Furthermore, the steam injection rod is perpendicular to the conveying direction of the conveyor belt and extends from one side of the trough body to the other side.

[0013] Furthermore, the bottom wall of the trough body is configured to be an inverted cone that inclines downward from the edge to the center in the radial direction, and a water outlet pipe is provided at the lowest point of the bottom wall for discharging water generated by steam condensation.

[0014] Furthermore, a circulating air component is provided above the conveyor belt, and the circulating air component extends from the feed end of the conveyor belt to the discharge end of the conveyor belt, and together with the conveyor belt forms a circulating air duct.

[0015] Furthermore, the circulating air component comprises:

[0016] A shell body, the bottom end of which is open and is covered above the conveyor belt;

[0017] A moisture exhaust duct is communicated with the side wall or the upper wall of the shell and is close to the feed end of the conveyor belt;

[0018] An air supply duct is communicated with the side wall or the upper wall of the shell and is close to the discharge end of the conveyor belt;

[0019] The air supply motor is connected to the air supply duct to drive the gas flow in the circulating air duct.

[0020] Furthermore, it also includes a conveying roller arranged at the discharge end of the conveying belt, and both ends of the conveying roller are respectively provided with a first cylinder that can be extended and retracted along the conveying direction of the conveying belt.

[0021] Furthermore, it also includes: a frame for installing the conveying roller, a seat plate is arranged at one end of the frame, and the conveying roller is arranged at the other end, and the first cylinder is installed between the seat plate and the conveying roller;

[0022] A second cylinder drives the frame to move along the conveying direction of the conveyor belt, and the second cylinder is installed on a side of the seat plate opposite to the first cylinder.

[0023] Furthermore, a scraper mechanism is provided on the outer peripheral side of the conveying roller for peeling off the tobacco flakes on the conveying belt;

[0024] The scraper mechanism comprises an upper scraper and a lower scraper. The upper scraper and the lower scraper are respectively arranged tangentially along the forward rotation direction and the reverse rotation direction of the conveying roller and the cutting edges of the upper scraper and the lower scraper are opposite to each other.

[0025] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0026] The drying and forming equipment of the utility model sets a steam heating component on the lower surface of the conveyor belt, uses the steam heating component to heat the conveyor belt, and then the conveyor belt performs heat transfer, which can quickly conduct heat to the tobacco pulp slices, increase the temperature of the tobacco pulp slices, and make the moisture contained in the tobacco pulp slices reach the evaporation temperature requirement. At the same time, a circulating air component that can accelerate the air circulation above the tobacco pulp slices is also set on the upper surface of the conveyor belt, which can both utilize the heat in the steam and avoid the moisture in the steam from contacting the tobacco pulp slices, greatly accelerating the drying speed of the tobacco pulp slices, and also ensuring that the upper and lower surfaces of the tobacco pulp slices are in a uniform drying state.

[0027] In the drying and forming equipment of the utility model, the steam heating component and the conveyor belt together form a cavity for accommodating steam, which fully utilizes the law that gas moves upward when heated. Placing the conveyor belt above the steam heating component can make the steam automatically contact the conveyor belt and conduct heat to the conveyor belt, which greatly simplifies the heating structure. At the same time, the use of steam heating makes the conveyor belt have a stable upper temperature limit, avoiding the problem of scorching the tobacco pulp slices.

[0028] The drying and forming equipment of the utility model, by arranging a steam injection rod in the steam heating component and reasonably arranging the layout of the steam injection rod relative to the conveyor belt, enables the steam to evenly heat the entire surface of the conveyor belt, thereby ensuring the uniform temperature of the conveyor belt, avoiding the phenomenon of tobacco pulp slices becoming damp due to the temperature difference of the conveyor belt, and improving the quality of the tobacco pulp slices after drying.

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0031] Figure 1It is a schematic diagram of a tobacco pulp sheet drying and forming device of the utility model;

[0032] Figure 2 It is a cross-sectional schematic diagram of a tobacco pulp sheet drying and forming device of the utility model;

[0033] Figure 3 It is a partial schematic diagram of the discharge end of a tobacco pulp sheet drying and forming device in the utility model.

[0034] Among them: 100, conveyor belt; 110, conveyor roller; 200, circulating air component; 210, shell; 220, air supply duct; 221, heater; 222, air supply motor; 230, dehumidification duct; 231, dehumidification motor; 300, steam heating component; 310, trough body; 320, steam duct; 330, exhaust pipe; 340, steam injection rod; 350, water outlet pipe; 400, deviation correction mechanism; 410, first cylinder; 420, second cylinder; 430, frame; 431, seat plate; 500, scraper mechanism; 510, upper scraper; 520, lower scraper.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "contact", and "communication" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the prior art, tobacco flakes are often used instead of natural tobacco leaves as raw materials for tobacco products. Tobacco powder, water, glue and other materials can be used to make flakes, which are mixed into tobacco slurry and then applied to the conveyor belt 100 of the drying and molding equipment through a molding device.

[0040] Then, the drying and molding equipment conveys the tobacco pulp slices to a high-temperature, ventilated chamber via a conveyor belt 100 to perform drying and molding treatment on the tobacco pulp slices.

[0041] Finally, the dried tobacco pulp sheet is peeled off from the conveyor belt 100 by a peeling device at the discharge end of the drying and forming equipment to form a tobacco sheet product.

[0042] Embodiment 1

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, in the embodiment of the utility model, a drying and forming device for tobacco pulp slices is introduced.

[0044] The drying and molding equipment mainly includes a belt-type conveying structure and a circulating air component 200 wrapped on the conveying structure.

[0045] Specifically, the conveyor belt 100 in the conveying structure is made of a metal material with good heat conductivity, for example, the conveyor belt 100 is made of stainless steel.

[0046] Furthermore, the conveying structure extends in a straight line, with a passive roller at one end and a conveying roller 110 at the other end. The conveying belt 100 is arranged around the outer circumference of the passive roller and the conveying roller 110 along the length direction of the conveying structure.

[0047] The portion of the conveyor belt 100 located above the conveyor roller 110 and the passive roller is a bearing section, which is straight and used to transport tobacco pulp sheets. The portion of the conveyor belt 100 located below the conveyor roller 110 and the passive roller is a return section, which is curved.

[0048] In addition, the drying and molding equipment includes a circulating air component 200 and a steam heating component 300 which are respectively arranged above the load-bearing section and below the load-bearing section of the conveyor belt 100 .

[0049] Specifically, the circulating air assembly 200 is disposed on the upper surface of the conveyor belt 100 load-bearing section and extends from the feed end of the conveyor belt 100 to the discharge end of the conveyor belt 100. The steam heating assembly 300 is disposed on the lower surface of the conveyor belt 100 load-bearing section for heating the conveyor belt 100.

[0050] In addition, the feeding end of the conveying structure is arranged at the passive roller, and the discharging end is arranged at the conveying roller 110. The drying and forming equipment includes a forming mechanism arranged at the feeding end. After the forming mechanism applies the tobacco pulp flakes to the upper surface of the conveyor belt 100, the conveyor belt 100 can be transported through the circulating air component 200 and the steam heating component 300 for heating and drying, and the tobacco pulp flakes are delivered to the discharging end.

[0051] In this embodiment, the drying and forming equipment sets the steam heating component 300 on the lower surface of the conveyor belt 100, and uses the steam heating component 300 to heat the conveyor belt 100, and then the conveyor belt 100 performs heat transfer, which can quickly transfer the heat to the tobacco pulp slices, increase the temperature of the tobacco pulp slices, and make the moisture contained in the tobacco pulp slices reach the evaporation temperature requirement. At the same time, a circulating air component 200 that can accelerate the air circulation above the tobacco pulp slices is also set on the upper surface of the conveyor belt 100, which can not only utilize the heat in the steam but also avoid the moisture in the steam from contacting the tobacco pulp slices, greatly accelerating the drying speed of the tobacco pulp slices, and also ensuring that the upper and lower surfaces of the tobacco pulp slices are in a uniform drying state.

[0052] like Figure 2 As shown, in the embodiment of the utility model, a drying and forming device for tobacco pulp slices is introduced. In order to transfer heat to the tobacco pulp slices better and faster, the conveyor belt 100 in the conveying structure is made of a metal material with good heat conductivity.

[0053] Furthermore, the steam heating assembly 300 is disposed on the lower surface of the bearing section of the conveyor belt 100, and the steam heating assembly 300 and the conveyor belt 100 form a cavity together. When the steam enters the cavity, it moves upward and first contacts the conveyor belt 100, transferring heat to the conveyor belt 100.

[0054] The steam heating assembly 300 includes a tank body 310 with an open top, a steam conduit 320 and an exhaust pipe 330 installed on the side wall of the tank body 310 .

[0055] Specifically, the conveyor belt 100 covers the top of the tank body 310 to form a closed cavity. The steam conduit 320 is disposed on the right side wall of the tank body 310 .

[0056] In order to promote the gas after cooling in the cavity of the tank body 310 to flow out of the cavity of the tank body 310 , the exhaust pipe 330 is arranged on the left side wall of the tank body 310 , corresponding to the gas flow direction.

[0057] In this way, the steam enters the cavity from the steam conduit 320, flows gradually from the right to the left, and heats the conveyor belt 100. After the steam flows to the left, it is discharged from the cavity of the tank body 310 through the exhaust pipe 330 to maintain the standard atmospheric pressure.

[0058] In this embodiment, the steam heating component 300 and the conveyor belt 100 together form a cavity for accommodating steam, which fully utilizes the law that gas moves upward when heated. Placing the conveyor belt 100 above the steam heating component 300 can make the steam automatically contact the conveyor belt 100 and transfer heat to the conveyor belt 100, which greatly simplifies the heating structure. At the same time, the use of steam heating makes the conveyor belt 100 have a stable upper temperature limit, avoiding the problem of scorching the tobacco slices.

[0059] like Figure 2 As shown, in another embodiment of the utility model, a drying and forming device capable of rapidly and evenly heating tobacco pulp slices is introduced.

[0060] The drying and molding equipment includes a circulating air component 200 and a steam heating component 300 which are respectively arranged above and below the load-bearing section of the conveyor belt 100 .

[0061] The steam heating assembly 300 is disposed on the lower surface of the bearing section of the conveyor belt 100, and the steam heating assembly 300 and the conveyor belt 100 form a cavity together. When the steam enters the cavity, it moves upward and first contacts the conveyor belt 100, transferring heat to the conveyor belt 100.

[0062] The steam heating assembly 300 includes a tank body 310 with an open top, a steam conduit 320 and an exhaust pipe 330 installed on the side wall of the tank body 310 .

[0063] In addition, the steam heating assembly 300 further includes a steam injection rod 340 . The steam injection rod 340 is disposed inside the tank body 310 and connected to the steam conduit 320 .

[0064] The steam injection rod 340 is arranged in a straight rod type. The steam injection rod 340 is connected to the steam conduit 320 and extends from the right side to the left side of the tank body 310. In addition, the steam injection rod 340 is provided with a plurality of injection holes arranged along the length direction thereof.

[0065] The steam injection rod 340 extends horizontally below the conveyor belt 100 and is spaced apart from the conveyor belt 100 so that the steam diffuses and expands in volume after being injected from the injection holes, thereby contacting a larger area of ​​the conveyor belt 100 .

[0066] Furthermore, in another embodiment of the utility model, a steam heating component 300 is introduced for use in a drying and molding device, which has simple assembly and reasonable distribution.

[0067] The steam spray rod 340 is a straight rod type, extends from one side of the conveyor belt 100 to the other side, and is perpendicular to the extending direction of the conveyor belt 100 .

[0068] Specifically, the steam injection rod 340 is connected to the steam conduit 320 and extends from the right side to the left side of the tank body 310. Along the extension direction of the conveyor belt 100, a plurality of steam injection rods 340 are evenly spaced and arranged, so that the conveyor belt 100 can be heated from multiple locations, ensuring that the conveyor belt 100 has a uniform temperature and improving the drying efficiency.

[0069] In this embodiment, by providing a steam injection rod 340 in the steam heating assembly 300 and reasonably arranging the layout of the steam injection rod 340 relative to the conveyor belt 100, the steam can evenly heat the entire surface of the conveyor belt 100, thereby ensuring that the temperature of the conveyor belt 100 is consistent, avoiding the phenomenon of tobacco pulp slices becoming damp due to temperature differences in the conveyor belt 100, and improving the quality of the tobacco pulp slices after drying.

[0070] like Figure 2 As shown, in the embodiment of the utility model, a drying and forming device capable of quickly draining the accumulated water is introduced. The drying and forming device includes a circulating air component 200 and a steam heating component 300.

[0071] The steam heating assembly 300 is disposed on the lower surface of the conveyor belt 100, and together with the conveyor belt 100, forms a cavity. In the process of drying the tobacco pulp slices, it is necessary to continuously transport steam into the cavity. When the steam enters the cavity, it moves upward and contacts the conveyor belt 100. After the steam contacts the conveyor belt 100, it transfers heat to the conveyor belt 100, and the temperature is rapidly reduced and condensed into condensed water on the lower surface of the conveyor belt 100.

[0072] The steam heating assembly 300 includes a trough body 310 with an open top. The conveyor belt 100 covers the top of the trough body 310 to form a closed cavity. During the production of tobacco pulp slices, condensed water will continuously accumulate in the trough body 310.

[0073] Therefore, in order to ensure that the drying and molding equipment can operate for a long time, a drain port needs to be opened on the tank body 310 to drain the condensed water in time.

[0074] Specifically, the bottom wall of the tank body 310 is set to be an inverted cone that tilts downward from the edge to the center in the radial direction, so that the condensed water will automatically flow to the center of the bottom wall of the tank body 310. Then, a water outlet pipe 350 is set at the lowest point of the bottom wall to quickly drain the condensed water.

[0075] In this embodiment, by setting the bottom wall of the trough body 310 to an inverted cone and providing a water outlet pipe 350 on the trough body 310, the condensed water converted by steam can be quickly discharged to avoid the condensed water from gathering in the trough body 310, thereby ensuring that the drying and molding equipment can operate for a long time to meet the drying process requirements for producing tobacco pulp sheets.

[0076] like Figure 1As shown, in the embodiment of the utility model, a drying and forming device for tobacco pulp slices is introduced.

[0077] The drying and molding equipment mainly includes a belt-type conveying structure and a circulating air component 200 wrapped on the conveying structure.

[0078] Specifically, the conveyor belt 100 in the conveying structure is made of a metal material with good heat conductivity, for example, the conveyor belt 100 is made of stainless steel.

[0079] Furthermore, the conveying structure extends in a straight line, with a passive roller at one end and a conveying roller 110 at the other end. The conveying belt 100 is arranged along the length direction of the conveying structure, surrounding the outer circumference of the passive roller and the conveying roller 110. The feeding end of the conveying structure is arranged at the passive roller, and the discharging end is arranged at the conveying roller 110.

[0080] Specifically, the circulating air component 200 is covered on the upper surface of the bearing section of the conveyor belt 100 and extends from the feed end of the conveyor belt 100 to the discharge end of the conveyor belt 100. The circulating air component 200 includes a shell 210 covered on the conveyor belt 100, an air supply duct 220 connected to the side wall or upper wall of the shell 210, and a dehumidification duct 230 connected to the side wall or upper wall of the shell 210 and close to the feed end of the conveyor belt. At the same time, in order to make the direction of gas flow in the circulating air duct opposite to the transmission direction of the conveyor belt, the air supply duct 220 is arranged close to the discharge end of the conveyor belt, and the dehumidification duct 230 is arranged close to the feed end of the conveyor belt. In this way, the tobacco pulp sheet will contact increasingly dry gas in the process of moving to the discharge end, so that the tobacco pulp sheet can obtain a better drying effect.

[0081] Preferably, the air supply duct 220 and the moisture exhaust duct 230 are installed on the upper side wall of the shell 210 and extend from bottom to top in the vertical direction, so as to circulate the air on the upper surface of the conveyor belt 100 .

[0082] In addition, the circulating air component is provided with an air supply motor 222. The air supply motor 222 is connected to the air supply duct 220. Further, a heater 221 is provided between the air supply motor 222 and the air supply duct 220 to heat the air blown by the air supply motor 222 to the air supply duct 220.

[0083] The circulating air component is also provided with a dehumidification motor 231. The dehumidification motor 231 is connected to the dehumidification air duct 230.

[0084] Furthermore, a control unit is provided in the drying and molding device. The control unit is electrically connected to the heater 221 and can control the heating power of the heater 221 to adjust the temperature of the air blown by the air supply motor 222 to the air supply duct 220 .

[0085] In this embodiment, an air supply motor 222, a dehumidification motor 231 and a heater 221 are provided in the circulating air component 200. By adjusting the power of the air supply motor 222, the dehumidification motor 231 and the heater 221, the gas temperature and flow rate in the circulating air component 200 can be controlled, so as to achieve the effect of quickly discharging the evaporated moisture of the tobacco slurry sheet out of the drying and molding equipment.

[0086] like Figure 3 As shown, in an embodiment of the utility model, a drying and molding device capable of preventing the conveyor belt 100 from deviating is introduced.

[0087] The drying and forming equipment mainly includes a belt-type conveying structure. The conveying structure extends in a straight line, with a passive roller at one end and a conveying roller 110 at the other end. The conveying belt 100 is arranged along the length direction of the conveying structure, surrounding the outer circumference of the passive roller and the conveying roller 110. The feeding end of the conveying structure is arranged at the passive roller, and the discharging end is arranged at the conveying roller 110.

[0088] The drying and forming device further comprises a conveying roller 110 having a deviation correction mechanism 400, which is located at the discharge end of the conveying belt 100. The deviation correction mechanism 400 is provided with a first cylinder 410 which can be extended and retracted in the horizontal direction.

[0089] Furthermore, at least two first cylinders 410 are provided in the deviation correction mechanism 400, and the two first cylinders 410 are respectively connected to the two ends of the conveying roller 110. By controlling the expansion and contraction of the first cylinders 410, the conveying roller 110 can be swung so that the conveying roller 110 and the passive roller are parallel to each other to prevent the conveyor belt 100 from running off.

[0090] Furthermore, the deviation-correcting mechanism 400 is further provided with a frame 430 that can be moved horizontally and a second cylinder 420 that drives the frame 430 .

[0091] Specifically, a seat plate 431 is provided at one end of the frame 430, and a conveying roller 110 is provided at the other end. The first cylinder 410 is installed between the seat plate 431 and the conveying roller 110. The second cylinder 420 is installed on the other side of the seat plate 431, opposite to the first cylinder 410, and can drive the frame 430 and the conveying roller 110 to move synchronously, and is used to adjust the center distance between the conveying roller 110 and the passive roller to ensure that the bearing section of the conveyor belt 100 is straight. This avoids the risk of the conveyor belt 100 being bent due to slack, resulting in a gap between the housing 210 of the circulating air component 200 and the trough 310 of the steam heating component 300, causing steam leakage into the circulating air component 200.

[0092] Furthermore, in order to better peel the tobacco pulp sheet from the conveyor belt 100 , a scraper mechanism 500 is provided on the outer peripheral side of the conveyor roller 110 .

[0093] The scraper mechanism 500 comprises an upper scraper 510 and a lower scraper 520. The upper scraper 510 and the lower scraper 520 are respectively arranged tangentially along the forward rotation direction and the reverse rotation direction of the conveying roller 110 and the cutting edges of the upper scraper 510 and the lower scraper 520 are opposite to each other.

[0094] Moreover, the upper and lower scrapers 520 can move in the tangential direction of the outer periphery of the conveying roller 110 to adjust the gap between the blade and the conveyor belt 100. When the conveyor belt 100 rotates forward, the upper scraper 510 moves close to the conveyor belt 100 to peel off the tobacco pulp flakes adhered to the carrying section of the conveyor belt 100. When the conveyor belt 100 rotates reversely, the lower scraper 520 moves close to the conveyor belt 100 to peel off the tobacco pulp flakes adhered to the return section of the conveyor belt 100.

[0095] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the present invention.

Claims

1. A drying and forming device for tobacco pulp flakes, comprising a conveyor belt (100) and a forming mechanism located at the feeding end of the conveyor belt (100) for applying tobacco pulp flakes to the upper surface of the conveyor belt (100), characterized in that , A steam heating component (300) for heating the conveyor belt (100) is provided below the conveyor belt (100); A circulating air component (200) is also provided above the conveyor belt (100), and the circulating air component (200) extends from the feeding end of the conveyor belt (100) to the discharging end of the conveyor belt (100), and together with the conveyor belt (100) forms a circulating air duct; The circulating air component (200) comprises: A shell (210) having an open bottom end and covering the conveyor belt (100); A moisture removal air duct (230) is connected to the side wall or the upper wall of the housing (210) and is close to the feed end of the conveyor belt; An air supply duct (220) is communicated with a side wall or an upper wall of the housing (210) and is close to a discharge end of the conveyor belt; The air supply motor (222) is connected to the air supply duct (220) and is used to drive the flow of gas in the circulating duct.

2. The drying and forming equipment for tobacco pulp sheets according to claim 1, characterized in that: The steam heating component (300) comprises a trough body (310) with an open top, and the conveyor belt (100) covers the open top of the trough body (310) to form a closed cavity; The tank body (310) is provided with a steam conduit (320) and an exhaust pipe (330) communicating with the inside and outside of the cavity. Steam can enter the cavity from the steam conduit (320) to heat the conveyor belt (100) and then be discharged from the exhaust pipe (330).

3. The drying and forming equipment for tobacco pulp sheets according to claim 2, characterized in that: The steam heating assembly (300) comprises a steam injection rod (340) arranged in the trough body (310), a plurality of injection holes arranged along the length direction of the steam injection rod (340) are provided on the side wall of the steam injection rod (340), and the steam injection rod (340) is arranged below the conveyor belt (100) with the injection holes facing the conveyor belt (100) and at a horizontal interval.

4. The drying and forming equipment for tobacco pulp sheets according to claim 3, characterized in that: The steam injection rod (340) is perpendicular to the conveying direction of the conveyor belt (100) and extends from one side of the trough body (310) to the other side.

5. The drying and forming equipment for tobacco pulp sheets according to claim 4, characterized in that: The bottom wall of the trough body (310) is configured to be an inverted cone that inclines downward from the edge to the center in the radial direction, and a water outlet pipe (350) is provided at the lowest point of the bottom wall for discharging water generated by steam condensation.

6. A tobacco pulp sheet drying and forming device according to any one of claims 1 to 5, characterized in that: It also includes a conveying roller (110) arranged at the discharge end of the conveying belt (100), and both ends of the conveying roller (110) are respectively provided with a first cylinder (410) that can be extended and retracted along the conveying direction of the conveying belt (100).

7. The drying and forming equipment for tobacco pulp sheets according to claim 6, characterized in that: It also includes: a frame (430) for mounting the conveying roller (110), one end of the frame (430) is provided with a seat plate (431) extending in a vertical direction, and the other end is provided with the conveying roller (110), and the first cylinder (410) is installed between the seat plate (431) and the conveying roller (110); A second cylinder (420) drives the frame (430) to move along the conveying direction of the conveyor belt (100), and the second cylinder (420) is installed on the side of the seat plate (431) opposite to the first cylinder (410).

8. The drying and forming equipment for tobacco pulp sheets according to claim 7, characterized in that: A scraper mechanism (500) is provided on the outer peripheral side of the conveying roller (110) for peeling off the tobacco sheets on the conveying belt (100); The scraper mechanism (500) comprises an upper scraper (510) and a lower scraper (520). The upper scraper and the lower scraper (520) are respectively arranged tangentially along the forward rotation direction and the reverse rotation direction of the conveying roller (110), and the cutting edges of the upper scraper and the lower scraper (520) are opposite to each other.

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