Tobacco feeding device

Abstract

The utility model relates to the technical field of tobacco processing, in particular to a tobacco feeding device which comprises a feeding tank body, and the feeding tank body is provided with a storage cavity and a positive pressure heating cavity from inside to outside. The material storage cavity is provided with a feeding pipe, a first positive pressure air inlet pipe and a first pressure discharging pipe; a feeding valve is arranged on the feeding pipe; a first air inlet valve is arranged on the first positive pressure air inlet pipe; a first exhaust valve is arranged on the first pressure exhaust pipe; a discharge hole is further formed in the lower part of the storage cavity; the discharge hole is communicated with the positive pressure heating cavity; the positive pressure heating cavity is provided with a heating pipe, a positive pressure air supplementing pipe, a second pressure discharging pipe and a discharging opening; the positive pressure air supplementing pipe is arranged in an inner cavity of the positive pressure heating cavity; a second exhaust valve is arranged on the second pressure exhaust pipe; and the discharge port is communicated with the conveying pipeline. The device has the advantages of energy conservation, environmental protection, good feed liquid control effect, accuracy, reliability and the like.

Description

Technical Field

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

[0002] During the tobacco leaf processing in the tobacco industry, tobacco leaf feeding means evenly applying a certain amount of liquid material (generally a viscous spice liquid containing invert sugar, glycyrrhizic acid, water, etc.) to a certain amount of tobacco leaves through a high-pressure steam-assisted spray head; the tobacco leaf feeding system generally consists of a feeding tank and a pipeline system. Because the liquid material is relatively viscous and crystals are likely to precipitate on the tank wall, if the liquid material condenses, it will have an adverse effect on the spraying effect of the liquid material and the pipeline cleaning. And the inner cavity diameter of the feeding tank generally reaches several meters with a large capacity. Heating the stored viscous liquid material not only consumes high energy, but also generally adds a stirring paddle to maintain the temperature balance of the liquid material, further increasing the energy consumption.

[0003] Meanwhile, in the current feeding system, before the liquid material is sprayed and applied, it needs to be metered by a flow meter first and then enters the spray head for application to the tobacco leaves. However, because the conveying pipeline is long, the fluidity of the liquid material during the conveying process completely depends on the temperature to maintain. Once the temperature of the liquid material fluctuates, the viscosity fluctuates, and then the density of the liquid material also fluctuates, and the flow rate control effect is not good; therefore, it often leads to inaccurate quantitative control of the liquid material in essence, resulting in low quality of the actual spraying of tobacco leaves, thus affecting the quality of tobacco leaf feeding. Summary of the Utility Model

[0004] Aiming at the above deficiencies, the utility model provides a tobacco feeding tank system with good controllability of the liquid material and good use effect.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A tobacco feeding device, comprising a feeding tank body, wherein a storage cavity and a positive pressure heating cavity are arranged in the feeding tank body from inside to outside; the tops of the storage cavity and the positive pressure heating cavity are both arranged as closed structures; the storage cavity is provided with a feed pipe, a first positive pressure inlet pipe and a first pressure discharge pipe; a feed valve is arranged on the feed pipe; a first inlet valve is arranged on the first positive pressure inlet pipe; a first exhaust valve is arranged on the first pressure discharge pipe; a discharge hole is further arranged at the lower part of the storage cavity; the discharge hole is communicated with the positive pressure heating cavity; the positive pressure heating cavity is provided with a heating pipe, a positive pressure air supply pipe, a second pressure discharge pipe and a discharge port; the positive pressure air supply pipe is arranged in the inner cavity of the positive pressure heating cavity; a second exhaust valve is arranged on the second pressure discharge pipe; the discharge port is communicated with a material conveying pipeline.

[0007] Optionally, it further includes a temperature regulating air chamber; the temperature regulating air chamber is arranged on the outer periphery of the positive pressure heating chamber; the temperature regulating air chamber is provided with a temperature regulating air inlet and a temperature regulating air outlet; the temperature regulating air outlet is communicated with the positive pressure air supply pipe; the temperature regulating air inlet is connected with the positive pressure air delivery pipe.

[0008] Optionally, the heating pipe is arranged on the outer side wall of the positive pressure heating chamber.

[0009] Optionally, the positive pressure air supply pipe is arranged in a spiral structure in the inner cavity of the positive pressure heating chamber; a plurality of air outlets are arranged on the positive pressure air supply pipe.

[0010] Optionally, a heat exchanger is arranged in the temperature regulating air chamber.

[0011] Optionally, the storage chamber and the positive pressure heating chamber are respectively provided with a storage chamber connector and a positive pressure heating chamber connector; electronic liquid level gauges are respectively arranged on the storage chamber connector and the positive pressure heating chamber connector.

[0012] Optionally, a relay heater is arranged on the material conveying pipeline; the relay heater is provided with a heated material conveying pipe, and a heating coil is arranged on the outer periphery of the heated material conveying pipe.

[0013] Optionally, a first temperature sensor is arranged in the positive pressure heating chamber, a second temperature sensor is arranged in the temperature regulating air chamber, and a third temperature sensor is arranged in the heated material conveying pipe.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By only heating the positive pressure heating chamber, while a large amount of liquid material is mainly stored in the storage chamber, and then only the heat of the liquid material in the positive pressure heating chamber needs to be maintained, further reducing energy consumption; and by supplementing gas to the heated liquid material, the gas content in the liquid material is increased, which is beneficial to significantly improving the fluidity of the gas-liquid mixture, and further provides the basis and possibility for accurately controlling the flow rate by using air pressure regulation. During the transportation of the gas-liquid mixture, because the bubbles in the gas-liquid mixture also have heat, therefore, the viscosity stability of the liquid phase can be effectively maintained, ensuring the due fluidity. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments.

[0017] Figure 1 It is a schematic structural diagram of the feeding tank body of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the tobacco feeding tank system of the present utility model. Detailed Embodiments

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 therefore should not be construed as a limitation to the present invention.

[0021] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] A tobacco feeding device includes a feeding tank body 1. The feeding tank body 1 is provided with a storage cavity 21 and a positive pressure heating cavity 3 from the inside to the outside. The tops of the storage cavity 21 and the positive pressure heating cavity 3 are both set as closed structures. The storage cavity 21 is used for storing the liquid material and dynamically replenishing the positive pressure heating cavity 3. The storage cavity 21 is provided with a feed pipe 11, a first positive pressure inlet pipe 12 and a first pressure discharge pipe 15. A feed valve 10 is arranged on the feed pipe. A first inlet valve 13 is arranged on the first positive pressure inlet pipe 12. A first exhaust valve 14 is arranged on the first pressure discharge pipe. A discharge cylinder 26 is further arranged at the lower part of the storage cavity 21. The discharge cylinder 26 is combined with the bottom of the feeding tank body 1. The discharge cylinder 26 is provided with a plurality of discharge holes 25. The discharge holes 25 are communicated with the positive pressure heating cavity 3. The positive pressure heating cavity 3 is provided with a heating pipe 2, a positive pressure replenishing air pipe 22, a second pressure discharge pipe 8 and a discharge port 5. The positive pressure replenishing air pipe 2 is arranged in the inner cavity of the positive pressure heating cavity. A second exhaust valve 9 is arranged on the second pressure discharge pipe 8. The discharge port is communicated with a material conveying pipeline 30.

[0023] Optionally, it further includes a temperature control air chamber 4; the temperature control air chamber 4 is arranged on the outer periphery of the positive pressure heating chamber 3; the temperature control air chamber 4 is provided with a temperature control air inlet 29 and a temperature control air outlet 7; in this embodiment, a buffer air chamber 28 is further provided, the buffer air chamber 28 is arranged below the temperature control air chamber 4, the buffer air chamber 28 is in an annular structure, and a plurality of air outlet holes 27 are arranged at its top. The purpose of such arrangement is to improve the uniformity of air outlet; the temperature control air inlet 29 serves as the air inlet of the buffer air chamber 28, and the outer end of the temperature control air inlet 29 is connected to a positive pressure air pipe; the temperature control air outlet 7 is communicated with the positive pressure air supply pipe 22; the temperature control air inlet is connected to the positive pressure air pipe.

[0024] Optionally, the heating pipe 2 is arranged on the outer side wall of the positive pressure heating chamber 3, and the heating pipe 2 can be an electric heating pipe, a hot oil heating pipe or a steam heating pipe.

[0025] Optionally, the positive pressure air supply pipe 22 is arranged in a spiral structure in the inner cavity of the positive pressure heating chamber 3, and its bottom end is fixedly combined with the outer side wall of the storage chamber 21; a plurality of air outlet holes 23 are arranged on the positive pressure air supply pipe 22, and high-pressure gas is injected into the liquid phase in the positive pressure heating chamber 3 through the air outlet holes 23 to form a high-pressure gas-liquid mixture.

[0026] Optionally, a heat exchanger 38 is arranged on the upper part of the temperature control air chamber 4, and a heat insulation layer 36 is arranged between the heat exchanger 38 and the outer side wall of the positive pressure heating chamber 3; the heat exchanger 38 is combined to the inner wall of the temperature control air chamber 4 through a bracket. The heat exchanger 38 is used to adjust the temperature of the air heated by the heating pipe 2. When it is prepared, an external machine is connected to its outside, and its principle is similar to that of air conditioner temperature control, but it cannot be understood as being limited to air compressor refrigeration / air energy heating only.

[0027] Optionally, the storage chamber and the positive pressure heating chamber 3 are respectively provided with a storage chamber connector 18 and a positive pressure heating chamber connector 24; a first electronic liquid level gauge 16 and a second electronic liquid level gauge 17 are respectively arranged on the storage chamber connector and the positive pressure heating chamber connector. The purpose of such arrangement is to: reduce the influence of the inner cavities of the storage chamber and the positive pressure heating chamber on the work and maintenance of the electronic liquid level gauge. The functions of arranging the first electronic liquid level gauge 16 and the second electronic liquid level gauge 17 are as follows:

[0028] The second electronic liquid level gauge 17 is used to monitor the liquid level line of the positive pressure heating chamber 3, that is, the lowest liquid level line 20 is higher than the discharge port 5, and the highest liquid level line 19 is lower than the temperature control air outlet 7, and the upper end port of the positive pressure heating chamber connector is not lower than the temperature control air outlet 7; and to achieve the above liquid level range, the following control methods can be adopted:

[0029] (1) Control the second exhaust valve 9 to exhaust gas because the positive pressure gas supply pipe 22 will continuously supply gas to the positive pressure heating chamber 3;

[0030] (2) Control the material storage chamber 21 to supply material to the positive pressure heating chamber 3. In actual control, the external liquid material can be input into this feeding tank by controlling the feeding valve 10 to increase the liquid material volume in the material storage chamber 21 to achieve the material supply; or by pressurizing the material storage chamber 21 to make the internal pressure of the material storage chamber 21 higher than the internal pressure of the positive pressure heating chamber 3 to achieve the material supply.

[0031] The first electronic liquid level gauge 16 is used to monitor the liquid level line in the material storage chamber 21, that is, not higher than the upper port of the material storage chamber communicating vessel 18 and not lower than the lower port of the material storage chamber communicating vessel 18 (the lowest liquid level line in the material storage chamber 21 can also be set according to actual needs); the lower port of the material storage chamber communicating vessel 18 is set above the position of the discharge cylinder 26, and the liquid level line in the material storage chamber 21 is regulated by controlling the feeding valve 10 to supply material or controlling the first intake valve 13 / the first exhaust valve 14.

[0032] And the priority / ultimate purpose of the above regulation is: to maintain the liquid level line in the positive pressure heating chamber 3.

[0033] Optionally, a relay heater 32 is provided on the material conveying pipeline 30; the relay heater 32 is provided with a heated material conveying pipe, and a heating coil 31 is arranged on the outer periphery of the heated material conveying pipe. A third temperature sensor is arranged in the heated material conveying pipe to finally monitor the temperature of the gas-liquid mixture, and the heating coil 31 is an adjustable heating coil. Then, through the spraying pipeline 33 and the valve 34, the tobacco is sprayed with the material through the high-pressure steam assisted spray head 35, and the valve 34 can adjust the opening degree of the flow rate of this system.

[0034] Optionally, a first temperature sensor 39 is arranged in the positive pressure heating chamber, and a second temperature sensor 6 is arranged in the temperature regulating air chamber.

[0035] The steps of feeding tobacco using a tobacco feeding device as described above are as follows:

[0036] (1) Heat the liquid material in the positive pressure heating chamber;

[0037] (2) Supply gas to the liquid material in the positive pressure heating chamber through the positive pressure gas supply pipe to form a gas-liquid mixture;

[0038] (3) Rely on the positive air pressure in the positive pressure heating chamber to convey the gas-liquid mixture, and control the flow rate of the gas-liquid mixture by regulating the air pressure in the positive pressure heating chamber;

[0039] (4) Control the liquid material volume in the positive pressure heating chamber by controlling the air pressure in the material storage chamber.

Claims

1. A tobacco feeding device, characterized in that: It includes a feeding tank body, which is provided with a storage chamber and a positive pressure heating chamber from the inside to the outside; the tops of the storage chamber and the positive pressure heating chamber are both arranged to be closed structures; the storage chamber is provided with a feed pipe, a first positive pressure air inlet pipe and a first pressure discharge pipe; a feed valve is provided on the feed pipe; a first positive pressure air inlet pipe is provided with a first air inlet valve; a first pressure discharge pipe is provided with a first exhaust valve; a discharge hole is also provided at the lower part of the storage chamber; the discharge hole is connected with the positive pressure heating chamber; the positive pressure heating chamber is provided with a heating pipe, a positive pressure air supply pipe, a second pressure discharge pipe and a discharge port; the positive pressure air supply pipe is arranged in the inner cavity of the positive pressure heating chamber; the second pressure discharge pipe is provided with a second exhaust valve; the discharge port is connected with the material conveying pipeline.

2. A tobacco feeding device according to claim 1, characterized in that: It also includes a temperature-regulating air chamber; the temperature-regulating air chamber is arranged on the periphery of the positive-pressure heating chamber; the temperature-regulating air chamber is provided with a temperature-regulating air inlet and a temperature-regulating air outlet; the temperature-regulating air outlet is connected to the positive-pressure air supply pipe; the temperature-regulating air inlet is connected to the positive-pressure air supply pipe.

3. A tobacco feeding device according to claim 1, characterized in that: The heating tube is arranged on the outer side wall of the positive pressure heating chamber.

4. A tobacco feeding device according to claim 2, characterized in that: The positive pressure air infusion pipe is arranged in the inner cavity of the positive pressure heating cavity in a spiral structure; and a plurality of air outlets are arranged on the positive pressure air infusion pipe.

5. A tobacco feeding device according to claim 2, characterized in that: A heat exchanger is arranged in the temperature regulating air chamber.

6. A tobacco feeding device according to claim 1, characterized in that: The material storage chamber and the positive pressure heating chamber are respectively provided with a material storage chamber communicating vessel and a positive pressure heating chamber communicating vessel; the material storage chamber communicating vessel and the positive pressure heating chamber communicating vessel are respectively provided with an electronic liquid level gauge.

7. A tobacco feeding device according to claim 1, characterized in that: The conveying pipeline is provided with a relay heater; the relay heater is provided with a heating conveying pipe, and a heating ring is provided on the outer periphery of the heating conveying pipe.

8. A tobacco feeding device according to claim 7, characterized in that: A first temperature sensor is arranged in the positive pressure heating chamber, a second temperature sensor is arranged in the temperature regulating air chamber, and a third temperature sensor is arranged in the heating conveying pipe.

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