Tobacco leaf feeding device

Abstract

The utility model relates to the technical field of tobacco processing, in particular to a tobacco leaf feeding device which comprises a feeding tank device, the feeding tank device comprises a feeding tank body, feed liquid is stored in an inner tank, and a steam spiral pipeline is arranged in an interlayer between the inner tank and the outer wall of the feeding tank body in a winding mode. A plurality of first ultrasonic vibration assemblies are arranged on the inner tank of the feeding tank body; a return pipe is arranged at the top of the inner tank of the charging tank body, and a charging tank outlet pipeline is arranged at the lower part of the inner tank; the tail end of an outlet pipeline of the material tank is connected with a filter, a discharge port of the filter is connected with a blow-off pipe and a material pump through a three-way pipe, a discharge port of the material pump is communicated with a reaction pipeline, a discharge port of the reaction pipeline is connected with a flow meter, and a discharge port of the flow meter is communicated with the return pipe and the feeding pipeline through a three-way pipe; and a spraying head is further arranged at the tail end of the feeding pipeline. The atomization device has the advantages of being good in atomization effect, convenient and efficient to clean, accurate in atomization control and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco processing, in particular to a tobacco leaf feeding device. Background Art

[0002] In the tobacco leaf processing process of the tobacco industry, the tobacco leaf feeding device is a kind of liquid feeding equipment that is widely used in the tobacco leaf feeding process. As an auxiliary equipment of the roller feeder, the tobacco leaf feeding device mainly pumps and stores the flavor liquid for the roller feeder. Therefore, the tobacco leaf feeding device is mainly composed of a feeding tank and a pipeline system. According to the requirements of the tobacco leaf feeding process, the liquid is relatively viscous and it is easy to precipitate crystals on the tank wall. If the liquid condenses, it will have an adverse effect on the liquid injection effect and pipeline cleaning.

[0003] At present, the industry mostly uses mechanical stirring and steam heating to prevent the condensation of the liquid feed inside the tobacco feeding tank. This type of treatment method has a simple structure and good effect, but the uniformity of the liquid feed still has room for improvement, especially before the liquid feed is sprayed, it needs to be measured by a flow meter and then evenly applied to a certain amount of tobacco leaves. The relevant conveying pipeline is long, which often leads to poor quantitative control for a period of time before the spray is started, resulting in low quality of tobacco spraying and waste. The feeding nozzle currently uses a dual-media nozzle. After the steam and liquid feed are fully mixed at the nozzle, they are sprayed onto the tobacco leaves in a cone shape. However, the dual-media nozzle has poor atomization uniformity and a high atomization particle size. Therefore, in view of the shortcomings of the current device, applying ultrasonic technology to the tobacco feeding device is a way to improve the liquid feed treatment effect. Summary of the invention

[0004] In view of the above shortcomings, the utility model provides a tobacco feeding device which can enhance the uniformity of liquid feed and improve the quality of liquid feed spray atomization.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tobacco feeding device comprises a feeding tank device, the feeding tank device comprises a feeding tank body, a first ultrasonic vibration component is arranged on the feeding tank body; a reflux pipe is arranged on the top of the inner tank of the feeding tank body, and a material tank outlet pipeline is arranged at the lower part; the end of the material tank outlet pipeline is connected with a sewage pipe and a material pump through a three-way pipe, the sewage pipe is provided with a sewage outlet pneumatic valve, the discharge port of the material pump is connected with a reaction pipeline, and a second ultrasonic vibration component is arranged in the reaction pipeline; the discharge port of the reaction pipeline is connected with a flow meter, and the discharge port of the flow meter is connected with the reflux pipe and the feed pipeline through a three-way; the reflux pipe is provided with a reflux pneumatic valve, and the feed pipeline is provided with a spray pneumatic valve; the end of the feed pipeline is also provided with a spray head.

[0007] Optionally, the spray head comprises an outer tube and an inner tube, the inner tube is connected and fixed to the outer tube via a plurality of support arms; the spray head comprises a main steam channel, a liquid channel, and an auxiliary steam channel from the inside to the outside; ultrasonic resonance components are correspondingly arranged on the outside of the outer tube and the inner tube.

[0008] Optionally, the rear end of the main steam channel is connected to the rear end of the auxiliary steam channel; the rear end of the outer tube is connected to the main steam delivery pipeline; and the liquid feed channel is connected to the feed pipeline.

[0009] Optionally, the front of the liquid channel is a small diameter end and the rear is a large diameter end, a distribution channel is arranged behind the large diameter end, and a plurality of centrifugal nozzles are arranged between the distribution channel and the liquid channel. Optionally, the center of the centrifugal nozzle is a cylindrical cavity, a narrowed conical centrifugal nozzle outlet is arranged at the front end of the centrifugal nozzle, and a centrifugal nozzle inlet is radially arranged on the shell at the rear end of the centrifugal nozzle.

[0010] Optionally, the distribution channel is an annular distribution channel, and its cross section is triangular.

[0011] Optionally, the flow rate ratio of the main steam delivery pipeline to the flow rate of the feed pipeline is 25L / h:200kg / h.

[0012] Optionally, the diameter of the main steam channel is 3 to 6 mm.

[0013] Optionally, the diameter of the main steam channel is 5 mm.

[0014] Optionally, a filter is connected to the end of the material tank outlet pipeline, and the outlet of the filter is connected to a sewage pipe and a material pump through a three-way pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model realizes internal circulation of the pipeline system by optimizing the pipeline layout, and ultrasonic vibration components are correspondingly arranged on the tank body of the feeding tank and the key area of ​​the rear section of the pipeline, which is convenient for the later system pipeline circulation cleaning, efficient and convenient, and saves cleaning water. During operation, the feed liquid can flow back, which significantly improves the quantitative control effect of the feed liquid in the spraying process and improves the tobacco leaf spraying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2It is a cross-sectional view of the spray head of the utility model;

[0020] Figure 3 It is a longitudinal sectional view of the centrifugal nozzle of the utility model;

[0021] Figure 4 It is a transverse sectional view of the centrifugal nozzle of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The feeding tank device comprises a feeding tank body 1, a stirring motor 2, a cleaning water inlet pneumatic valve 3, a liquid inlet pneumatic valve 4, a tank ultrasonic vibration rod 5, a tank vibration tool head 6, an ultrasonic controller 7, a steam inlet pneumatic valve 8, a condensate outlet pneumatic valve 9, a steam spiral pipeline 10, a stirring rotary rod 11, a stirring fan blade 12, a tank sewage pneumatic valve 13, a tank outlet pneumatic valve 14, and a tank return manual valve 15. The feeding tank body 1 is cylindrical and the lower diameter gradually narrows to a conical chamber. The cleaning water inlet pneumatic valve 3, the liquid inlet pneumatic valve 4, the tank ultrasonic vibration rod 5, the tank vibration tool head 6, the ultrasonic controller 7, the steam inlet pneumatic valve 8, the condensate outlet pneumatic valve 9, the steam spiral pipeline 10, the stirring rotary rod 11, the stirring fan blade 12, the tank sewage pneumatic valve 13, the tank outlet pneumatic valve 14, and the tank return manual valve 15. The pneumatic valve 4 is arranged on the upper cover of the tank body, the pneumatic valve 13 for draining the material tank, the pneumatic valve 14 for outlet of the material tank, and the manual valve 15 for withdrawing the material from the material tank are arranged at the bottom of the conical chamber of the tank body to facilitate the discharge of the material liquid or the cleaning water from the tank body. The control program of the feeding system adjusts the opening and closing states of each pneumatic valve to meet different functional requirements. The tank body 1 of the feeding tank is made of stainless steel and has good corrosion resistance. The interior of the tank body 1 of the feeding tank is a double-layer sandwich structure, and the material liquid is stored in the inner tank. The steam spiral pipeline 10 is arranged in the sandwich between the inner tank and the outer wall of the tank body 1 of the feeding tank. The process index requires that the temperature of the feed liquid be kept constant. Steam enters the steam spiral pipeline 10 from the steam inlet pneumatic valve 8 to continuously heat the feed liquid stored in the inner tank while preventing the feed liquid from condensing. The steam after heat release is discharged from the pipeline through the condensate outlet pneumatic valve 9. The stirring motor 2 is arranged at the center of the top of the feeding tank body 1. The stirring rotary rod 11 and the stirring fan blade 12 are driven by the motor to continuously rotate in a circle to continuously stir the feed liquid to prevent the feed liquid from condensing due to low temperature or long-term non-use. 2 to 6 tank ultrasonic vibrators are evenly arranged on the top of the feeding tank body 1 5. The ultrasonic vibration rod 5 converts the electrical signal sent by the ultrasonic controller 7 into high-frequency mechanical vibration and transmits it to the liquid feed through the tank body vibration tool head 6. The tank body ultrasonic vibration rod 5, the tank body vibration tool head 6, and the ultrasonic controller 7 constitute a first ultrasonic vibration component; ultrasonic vibration will form countless high-pressure areas and low-pressure areas in the liquid feed and constantly collide with each other. Ultrasonic stirring generates strong shear stress in the liquid feed, thereby improving the uniformity of the liquid feed and preventing condensation and crystallization. The stirring motor 2 and the tank body ultrasonic vibration rod 5 in the storage and feeding stages should be kept on.The top of the inner tank of the feed tank body 1 is provided with a reflux pipe, and the lower part thereof is provided with a discharge pipe; the pipeline system includes a filter 16, a pneumatic valve 17 for a sewage outlet, a material pump 18, a pneumatic valve 19 for a reaction pipeline inlet, a reaction pipeline 20, a pipeline ultrasonic vibration rod 22, an ultrasonic controller 7, a pipeline vibration tool head 21, a flow meter 23, a reflux pneumatic valve 24, a pneumatic valve 25 for spraying, a pneumatic valve 26 for a steam inlet, and an ultrasonic fine atomization nozzle 27; the top of the inner tank of the feed tank body 1 is provided with a reflux pipe, and the lower part thereof is provided with a material tank outlet pipeline; the material tank outlet pipeline is connected to the sewage three-way pipeline through the filter 16, and when working, the feed liquid is filtered by the filter 16 for impurities and then flows to the material pump 18, and when cleaning, the cleaning water flushes the filter 16 and then flows through the pneumatic valve 1 for the sewage outlet. 7 is discharged to the sewer, the material pump 18 lifts the pressure pumping liquid in the material liquid or cleaning water to complete the reflux or injection process, the pipeline passes through the reaction pipeline 20 made of columnar stainless steel material, and the high-frequency ultrasonic vibration energy emitted by the pipeline ultrasonic vibration rod 22 is transmitted to the material flowing through the reaction pipeline 20 by the pipeline vibration tool head 21. The pipeline vibration tool head 21, the pipeline ultrasonic vibration rod 22 and the ultrasonic controller 7 constitute the second ultrasonic vibration component; therefore, the material will be further loosened and uniformed in the reaction pipeline 20 and then passed through the flow meter 23, and the discharge port of the flow meter 23 is connected to the reflux pipe and the feed pipe through a tee; the reflux pipe is provided with a reflux pneumatic valve 24, and the feed pipe is provided with a spray pneumatic valve 25; the end of the feed pipe is also provided with a spray head. The reflux pneumatic valve 24 and the spray pneumatic valve 25 are respectively located on both sides of the reflux three-way pipeline. The material will flow back to the top of the feeding tank body 1 through the reflux pneumatic valve 24 to realize a complete pre-filling and cleaning circulation path. After the spraying stage begins, the reflux pneumatic valve 24 is closed and the spraying pneumatic valve 25 and the steam inlet pneumatic valve 26 are opened. The liquid feed and steam are fully mixed in the ultrasonic fine atomization nozzle 27 to form a conical liquid feed spray which is applied to the tobacco leaves. The pipeline ultrasonic vibrator rod 22 should be kept in the open state during the spraying stage and the pre-filling stage before the spraying stage so that the liquid to be sprayed can maintain a higher uniformity.

[0026] The spray head comprises an outer tube 27.1, an inner tube 27.2, a main steam channel 27.3, an auxiliary steam channel 27.4, a liquid channel 27.5, a guide camber 27.6, a resonance cavity 27.7, a threaded hole 27.8, a distribution channel 27.9, a feed pipe 27.10, and a centrifugal nozzle 27.11; the inner tube 27.2 is connected and fixed to the outer tube 27.1 by a plurality of support arms (not shown, which may also be a compression screw, etc., and may be arranged in the middle and lower areas of the outer tube 27.1); the spray head 27 is cylindrical as a whole, with a conical opening at the top; the outer tube 27.1 and the inner tube 27.2 separate the spray head into a sandwich structure, and the channels from the inside to the outside are respectively the main steam channel 27.3, the liquid channel 27.5, the auxiliary steam channel 27.4, the liquid channel 27.5, the auxiliary steam channel 27.6, the guide camber 27.6, the resonance cavity 27.7, the threaded hole 27.8, the distribution channel 27.9, the feed pipe 27.10, and the centrifugal nozzle 27.11. The auxiliary steam channel 27.4 and the main steam channel 27.3 are located in the center of the spray head. The channels are cylindrical and most of the steam is ejected from this channel to complete the liquid injection. A branch is set at the root of the spray head to allow the steam to enter the narrow auxiliary steam channel 27.4 from the main steam channel 27.3. The liquid channel 27.5 is located between the two steam channels and includes a tapered section and a large diameter section and a small diameter section arranged on both sides of the tapered section. The end of the large diameter section of the liquid channel 27.5 is a tapered slope inclined outward at a certain angle. 4 to 30 threaded holes 27.8 can be evenly arranged on the tapered slope according to the flow demand, and centrifugal nozzles 27.11 are installed on the threaded holes 27.8. The centrifugal nozzles 27.11 are evenly arranged around the circumference so that each centrifugal nozzle can spray at the same time and at the same time. Atomization and diffusion at the same time make the droplets more evenly distributed in space. The center of the centrifugal nozzle 27.11 is a cylindrical cavity. The front end of the centrifugal nozzle 27.11 is provided with a narrowed conical centrifugal nozzle outlet 27.11.2. The shell at the rear end of the centrifugal nozzle 27.11 is radially provided with a centrifugal nozzle inlet 27.11.1. The front part of the liquid channel 27.5 is a small diameter end and the rear part is a large diameter end. The inner tube 27.2 forms an annular distribution channel 27.9 with a triangular cross section after the inclined surface, and a feed pipe 27.10 for the liquid to enter the spray head is provided on the outer wall of the distribution channel 27.9. The liquid enters the annular distribution channel 27.9 from the feed channel 27.10. The liquid is evenly distributed in the distribution pipe 27.9 and is discharged by the centrifugal nozzle. The inlet 27.11.1 of the centrifugal nozzle enters the cylindrical cavity at the center of the centrifugal nozzle 27.11 along the tangential direction, and the liquid is sprayed out at the outlet 27.11.2 of the centrifugal nozzle to complete atomization. An annular resonance cavity 27.7 is arranged on the outer tube 27.1 at the end of the small diameter section of the liquid channel 27.5. The steam of the auxiliary steam channel 27.4 passes through the resonance cavity 27.7 and reaches the injection port. A circle of guide camber 27.6 is arranged outward on the outer wall of the small diameter section of the inner tube 27.2 to guide the steam into the resonance cavity 27.7. The high-speed steam will generate ultrasonic vibration in the resonance cavity 27.7, that is, the resonance cavity 27.7 and the circle of guide camber 27.6 constitute an ultrasonic resonance component. The resonance cavity 27.7 and the circle of guide camber 27.6 are used to guide the steam into the resonance cavity 27.7.6 structure, the ultrasonic resonance component, and the principle of generating ultrasonic vibration are technologies disclosed in the art, and the principle will not be elaborated in detail; in this embodiment, the liquid droplets are further torn apart by the ultrasonic resonance component, and the liquid is secondary atomized at the nozzle outlet, and finally the steam and the fully atomized liquid are uniformly mixed at the nozzle outlet, and sprayed out from the conical opening to form a conical liquid mist.

[0027] The tobacco leaf slurry is generally a viscous liquid composed of invert sugar, propylene glycol, licorice cream, water, etc. To achieve the above-mentioned technical effects, in this embodiment, the flow rate ratio of the main steam delivery pipeline to the feed pipeline is 25L / h:200kg / h. This flow rate ratio directly affects the atomization uniformity and the atomization fineness effect; the diameter of the main steam channel 27.3 can be selected from 3 to 6 mm, preferably 5 mm, the height of the resonance cavity 27.7 can be selected from 1.7 mm, and the ratio of the depth to the height of the resonance cavity 27.7 is 2.5. The above parameters can better achieve the following effects: after the liquid is sprayed out of the small opening at the centrifugal nozzle 27.11, there is a pressure difference that causes the liquid to diffuse rapidly and be torn into large particles. At the guide arc surface 27.6, the liquid is dispersed into liquid mist for the second time through ultrasonic vibration, and then the liquid mist is driven to spray outward by the steam of the main steam channel 27.3, playing an ejection role. Based on the needs of tobacco production, the production of incense sticks is relatively large, so the conical liquid mist sprayed by the spray head needs to reach a range of at least 2m. If there is no main steam channel 27.3, the liquid mist cannot be fully expanded into a large-scale conical spray, and the liquid is easy to gather at the outlet of the spray head, resulting in poor feeding effect. The existence of the main steam channel makes the sprayed liquid spray more directional, and it can be sprayed farther and has a larger expansion area.

Claims

1. A tobacco feeding device, characterized in that: It comprises a feeding tank device, which comprises a feeding tank body, on which a first ultrasonic vibration component is arranged; a reflux pipe is arranged on the top of the inner tank of the feeding tank body, and a material tank outlet pipeline is arranged at the lower part; the end of the material tank outlet pipeline is connected with a sewage pipe and a material pump through a three-way pipe, a sewage pipe is provided with a sewage outlet pneumatic valve, the discharge port of the material pump is connected with a reaction pipeline, and a second ultrasonic vibration component is arranged in the reaction pipeline; the discharge port of the reaction pipeline is connected with a flow meter, and the discharge port of the flow meter is connected with the reflux pipe and the feed pipeline through a three-way; a reflux pneumatic valve is arranged on the reflux pipe, and a spray pneumatic valve is arranged on the feed pipeline; a spray head is also arranged at the end of the feed pipeline.

2. A tobacco feeding device according to claim 1, characterized in that: The spray head comprises an outer tube and an inner tube, wherein the inner tube is connected and fixed to the outer tube via a plurality of support arms; the spray head comprises a main steam channel, a liquid channel, and an auxiliary steam channel from the inside to the outside; and ultrasonic resonance components are correspondingly arranged on the outside of the outer tube and the inner tube.

3. A tobacco feeding device according to claim 2, characterized in that: The rear end of the main steam channel is communicated with the rear end of the auxiliary steam channel; the rear end of the outer tube is communicated with the main steam delivery pipeline; and the liquid feed channel is communicated with the feed pipeline.

4. A tobacco feeding device according to claim 2, characterized in that: The front part of the liquid feed channel is a small diameter end and the rear part is a large diameter end, a distribution channel is arranged behind the large diameter end; and a plurality of centrifugal nozzles are arranged between the distribution channel and the liquid feed channel.

5. A tobacco feeding device according to claim 4, characterized in that: The center of the centrifugal nozzle is a cylindrical cavity, a narrowed conical centrifugal nozzle outlet is arranged at the front end of the centrifugal nozzle, and a centrifugal nozzle inlet is radially arranged on the shell body at the rear end of the centrifugal nozzle.

6. A tobacco feeding device according to claim 4, characterized in that: The distribution channel is an annular distribution channel, and its cross section is a triangle.

7. A tobacco feeding device according to claim 3, characterized in that: The flow rate ratio of the main steam delivery pipeline to the flow rate of the feed pipeline is 25L / h:200kg / h.

8. A tobacco feeding device according to claim 2, characterized in that: The diameter of the main steam channel is 3-6 mm.

9. A tobacco leaf feeding device according to claim 8, characterized in that: The diameter of the main steam channel is 5 mm.

10. A tobacco feeding device according to claim 1, characterized in that: The end of the material tank outlet pipeline is connected with a filter, and the outlet of the filter is connected with a sewage pipe and a material pump through a three-way pipe.

Images